./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/array-memsafety/strreplace-alloca-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 9a8b2e8d 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_1.3.100.v20150511-1540.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/array-memsafety/strreplace-alloca-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 50bdaf600d03af0a677a59daf6a875dbe69c10b2 ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-9a8b2e8 [2020-10-20 05:51:47,387 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 05:51:47,390 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 05:51:47,413 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 05:51:47,413 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 05:51:47,415 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 05:51:47,416 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 05:51:47,418 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 05:51:47,420 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 05:51:47,421 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 05:51:47,422 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 05:51:47,423 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 05:51:47,423 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 05:51:47,424 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 05:51:47,426 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 05:51:47,427 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 05:51:47,428 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 05:51:47,429 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 05:51:47,431 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 05:51:47,433 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 05:51:47,445 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 05:51:47,446 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 05:51:47,448 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 05:51:47,449 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 05:51:47,451 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 05:51:47,452 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 05:51:47,452 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 05:51:47,453 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 05:51:47,453 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 05:51:47,454 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 05:51:47,455 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 05:51:47,456 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 05:51:47,456 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 05:51:47,457 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 05:51:47,458 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 05:51:47,458 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 05:51:47,459 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 05:51:47,459 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 05:51:47,460 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 05:51:47,461 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 05:51:47,461 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 05:51:47,462 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2020-10-20 05:51:47,489 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 05:51:47,491 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 05:51:47,494 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 05:51:47,495 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 05:51:47,495 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 05:51:47,495 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 05:51:47,495 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 05:51:47,496 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-20 05:51:47,496 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 05:51:47,496 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 05:51:47,497 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 05:51:47,498 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-10-20 05:51:47,498 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-10-20 05:51:47,498 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-10-20 05:51:47,499 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 05:51:47,499 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-10-20 05:51:47,499 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 05:51:47,500 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 05:51:47,501 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 05:51:47,501 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 05:51:47,501 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 05:51:47,502 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 05:51:47,502 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 05:51:47,502 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 05:51:47,503 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 05:51:47,503 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 05:51:47,503 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 05:51:47,503 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 05:51:47,504 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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 -> 50bdaf600d03af0a677a59daf6a875dbe69c10b2 [2020-10-20 05:51:47,742 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 05:51:47,755 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 05:51:47,759 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 05:51:47,761 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 05:51:47,761 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 05:51:47,762 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-memsafety/strreplace-alloca-2.i [2020-10-20 05:51:47,853 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e796e2a61/b04addb274fd46b3bb8101b7a4b22a2a/FLAG6a351ac74 [2020-10-20 05:51:48,450 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 05:51:48,450 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-memsafety/strreplace-alloca-2.i [2020-10-20 05:51:48,464 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e796e2a61/b04addb274fd46b3bb8101b7a4b22a2a/FLAG6a351ac74 [2020-10-20 05:51:48,712 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e796e2a61/b04addb274fd46b3bb8101b7a4b22a2a [2020-10-20 05:51:48,715 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 05:51:48,721 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-20 05:51:48,722 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 05:51:48,722 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 05:51:48,726 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 05:51:48,727 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 05:51:48" (1/1) ... [2020-10-20 05:51:48,730 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13b89e75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:51:48, skipping insertion in model container [2020-10-20 05:51:48,731 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 05:51:48" (1/1) ... [2020-10-20 05:51:48,739 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 05:51:48,799 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 05:51:49,221 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 05:51:49,232 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 05:51:49,275 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 05:51:49,335 INFO L208 MainTranslator]: Completed translation [2020-10-20 05:51:49,336 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:51:49 WrapperNode [2020-10-20 05:51:49,336 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 05:51:49,337 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 05:51:49,338 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 05:51:49,338 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 05:51:49,352 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:51:49" (1/1) ... [2020-10-20 05:51:49,353 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:51:49" (1/1) ... [2020-10-20 05:51:49,382 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:51:49" (1/1) ... [2020-10-20 05:51:49,384 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:51:49" (1/1) ... [2020-10-20 05:51:49,413 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:51:49" (1/1) ... [2020-10-20 05:51:49,422 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:51:49" (1/1) ... [2020-10-20 05:51:49,425 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:51:49" (1/1) ... [2020-10-20 05:51:49,431 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 05:51:49,432 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 05:51:49,432 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 05:51:49,433 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 05:51:49,434 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:51:49" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 05:51:49,501 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-20 05:51:49,501 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 05:51:49,502 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-20 05:51:49,502 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-20 05:51:49,502 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2020-10-20 05:51:49,502 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2020-10-20 05:51:49,503 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2020-10-20 05:51:49,503 INFO L138 BoogieDeclarations]: Found implementation of procedure cstrreplace [2020-10-20 05:51:49,503 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-20 05:51:49,503 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-20 05:51:49,504 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-20 05:51:49,504 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-20 05:51:49,504 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-20 05:51:49,504 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-20 05:51:49,504 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-20 05:51:49,504 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-20 05:51:49,505 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-20 05:51:49,505 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-20 05:51:49,505 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-20 05:51:49,505 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-20 05:51:49,506 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-20 05:51:49,507 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-20 05:51:49,507 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-20 05:51:49,507 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-20 05:51:49,507 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-20 05:51:49,508 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-20 05:51:49,509 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-20 05:51:49,509 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2020-10-20 05:51:49,509 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2020-10-20 05:51:49,510 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2020-10-20 05:51:49,510 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-20 05:51:49,510 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-20 05:51:49,510 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-20 05:51:49,510 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-20 05:51:49,511 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-20 05:51:49,511 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-20 05:51:49,511 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-20 05:51:49,511 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-20 05:51:49,511 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-20 05:51:49,512 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-20 05:51:49,512 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-20 05:51:49,512 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-20 05:51:49,512 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-20 05:51:49,512 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-20 05:51:49,512 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-20 05:51:49,512 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-20 05:51:49,512 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-20 05:51:49,512 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-20 05:51:49,513 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-20 05:51:49,513 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-20 05:51:49,513 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-20 05:51:49,513 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-20 05:51:49,513 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-20 05:51:49,513 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-20 05:51:49,514 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-20 05:51:49,514 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-20 05:51:49,514 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-20 05:51:49,514 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-20 05:51:49,514 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-20 05:51:49,514 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-20 05:51:49,515 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-20 05:51:49,515 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-20 05:51:49,515 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-20 05:51:49,515 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-20 05:51:49,515 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-20 05:51:49,515 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-20 05:51:49,515 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-20 05:51:49,515 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-20 05:51:49,516 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-20 05:51:49,516 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-20 05:51:49,516 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-20 05:51:49,516 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-20 05:51:49,517 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-20 05:51:49,517 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-20 05:51:49,518 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-20 05:51:49,518 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-20 05:51:49,519 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-20 05:51:49,519 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-20 05:51:49,519 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-20 05:51:49,519 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-20 05:51:49,519 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-20 05:51:49,520 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-20 05:51:49,520 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-20 05:51:49,520 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-20 05:51:49,521 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-20 05:51:49,521 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-20 05:51:49,521 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-20 05:51:49,521 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-20 05:51:49,521 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-20 05:51:49,521 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-20 05:51:49,521 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-20 05:51:49,521 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-20 05:51:49,521 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-20 05:51:49,522 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-20 05:51:49,522 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-20 05:51:49,522 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-20 05:51:49,522 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-20 05:51:49,522 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-20 05:51:49,522 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-20 05:51:49,522 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-20 05:51:49,522 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-20 05:51:49,522 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-20 05:51:49,523 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-20 05:51:49,523 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-20 05:51:49,523 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-20 05:51:49,523 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-20 05:51:49,523 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-20 05:51:49,523 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-20 05:51:49,523 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-20 05:51:49,523 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-20 05:51:49,524 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-20 05:51:49,524 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-20 05:51:49,524 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-20 05:51:49,524 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-20 05:51:49,524 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-20 05:51:49,524 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-20 05:51:49,525 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-20 05:51:49,525 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-20 05:51:49,525 INFO L130 BoogieDeclarations]: Found specification of procedure cstrreplace [2020-10-20 05:51:49,526 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-20 05:51:49,526 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-20 05:51:49,527 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-20 05:51:49,527 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 05:51:49,527 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-20 05:51:49,528 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-20 05:51:49,528 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 05:51:50,096 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 05:51:50,097 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-20 05:51:50,099 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 05:51:50 BoogieIcfgContainer [2020-10-20 05:51:50,099 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 05:51:50,101 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 05:51:50,101 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 05:51:50,105 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 05:51:50,105 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 05:51:48" (1/3) ... [2020-10-20 05:51:50,106 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@501a921e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 05:51:50, skipping insertion in model container [2020-10-20 05:51:50,107 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:51:49" (2/3) ... [2020-10-20 05:51:50,107 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@501a921e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 05:51:50, skipping insertion in model container [2020-10-20 05:51:50,107 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 05:51:50" (3/3) ... [2020-10-20 05:51:50,109 INFO L111 eAbstractionObserver]: Analyzing ICFG strreplace-alloca-2.i [2020-10-20 05:51:50,122 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 05:51:50,131 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 11 error locations. [2020-10-20 05:51:50,146 INFO L253 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2020-10-20 05:51:50,168 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 05:51:50,169 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-20 05:51:50,169 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 05:51:50,170 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 05:51:50,170 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 05:51:50,170 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 05:51:50,170 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 05:51:50,171 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 05:51:50,189 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2020-10-20 05:51:50,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-20 05:51:50,199 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:51:50,201 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:51:50,201 INFO L429 AbstractCegarLoop]: === Iteration 1 === [cstrreplaceErr2REQUIRES_VIOLATION, cstrreplaceErr3REQUIRES_VIOLATION, cstrreplaceErr4REQUIRES_VIOLATION, cstrreplaceErr5REQUIRES_VIOLATION, cstrreplaceErr0REQUIRES_VIOLATION, cstrreplaceErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 05:51:50,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:51:50,208 INFO L82 PathProgramCache]: Analyzing trace with hash -610270170, now seen corresponding path program 1 times [2020-10-20 05:51:50,225 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:51:50,226 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108698000] [2020-10-20 05:51:50,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:51:50,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:51:50,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 05:51:50,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:51:50,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:51:50,441 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108698000] [2020-10-20 05:51:50,442 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 05:51:50,442 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 05:51:50,443 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609812383] [2020-10-20 05:51:50,448 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 05:51:50,448 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 05:51:50,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 05:51:50,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 05:51:50,463 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 4 states. [2020-10-20 05:51:50,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:51:50,625 INFO L93 Difference]: Finished difference Result 40 states and 43 transitions. [2020-10-20 05:51:50,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 05:51:50,628 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-10-20 05:51:50,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:51:50,638 INFO L225 Difference]: With dead ends: 40 [2020-10-20 05:51:50,638 INFO L226 Difference]: Without dead ends: 37 [2020-10-20 05:51:50,640 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 05:51:50,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-10-20 05:51:50,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-10-20 05:51:50,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-20 05:51:50,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 40 transitions. [2020-10-20 05:51:50,681 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 40 transitions. Word has length 10 [2020-10-20 05:51:50,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:51:50,682 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 40 transitions. [2020-10-20 05:51:50,682 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 05:51:50,682 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 40 transitions. [2020-10-20 05:51:50,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-20 05:51:50,683 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:51:50,683 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:51:50,683 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 05:51:50,683 INFO L429 AbstractCegarLoop]: === Iteration 2 === [cstrreplaceErr2REQUIRES_VIOLATION, cstrreplaceErr3REQUIRES_VIOLATION, cstrreplaceErr4REQUIRES_VIOLATION, cstrreplaceErr5REQUIRES_VIOLATION, cstrreplaceErr0REQUIRES_VIOLATION, cstrreplaceErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 05:51:50,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:51:50,684 INFO L82 PathProgramCache]: Analyzing trace with hash -610270169, now seen corresponding path program 1 times [2020-10-20 05:51:50,684 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:51:50,684 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356510462] [2020-10-20 05:51:50,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:51:50,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:51:50,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 05:51:50,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:51:50,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:51:50,778 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356510462] [2020-10-20 05:51:50,779 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 05:51:50,779 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 05:51:50,779 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568242800] [2020-10-20 05:51:50,781 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 05:51:50,781 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 05:51:50,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 05:51:50,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-20 05:51:50,782 INFO L87 Difference]: Start difference. First operand 37 states and 40 transitions. Second operand 5 states. [2020-10-20 05:51:50,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:51:50,889 INFO L93 Difference]: Finished difference Result 36 states and 39 transitions. [2020-10-20 05:51:50,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 05:51:50,889 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-10-20 05:51:50,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:51:50,890 INFO L225 Difference]: With dead ends: 36 [2020-10-20 05:51:50,891 INFO L226 Difference]: Without dead ends: 36 [2020-10-20 05:51:50,891 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-20 05:51:50,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-20 05:51:50,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-10-20 05:51:50,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-20 05:51:50,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 39 transitions. [2020-10-20 05:51:50,897 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 39 transitions. Word has length 10 [2020-10-20 05:51:50,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:51:50,897 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 39 transitions. [2020-10-20 05:51:50,897 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 05:51:50,898 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 39 transitions. [2020-10-20 05:51:50,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-20 05:51:50,898 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:51:50,898 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:51:50,898 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-20 05:51:50,899 INFO L429 AbstractCegarLoop]: === Iteration 3 === [cstrreplaceErr2REQUIRES_VIOLATION, cstrreplaceErr3REQUIRES_VIOLATION, cstrreplaceErr4REQUIRES_VIOLATION, cstrreplaceErr5REQUIRES_VIOLATION, cstrreplaceErr0REQUIRES_VIOLATION, cstrreplaceErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 05:51:50,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:51:50,899 INFO L82 PathProgramCache]: Analyzing trace with hash -610270116, now seen corresponding path program 1 times [2020-10-20 05:51:50,899 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:51:50,900 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582462546] [2020-10-20 05:51:50,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:51:50,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:51:50,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 05:51:50,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:51:50,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:51:50,955 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582462546] [2020-10-20 05:51:50,956 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 05:51:50,956 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-20 05:51:50,956 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762860234] [2020-10-20 05:51:50,957 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 05:51:50,957 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 05:51:50,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 05:51:50,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-20 05:51:50,957 INFO L87 Difference]: Start difference. First operand 36 states and 39 transitions. Second operand 5 states. [2020-10-20 05:51:51,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:51:51,061 INFO L93 Difference]: Finished difference Result 44 states and 47 transitions. [2020-10-20 05:51:51,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 05:51:51,062 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-10-20 05:51:51,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:51:51,065 INFO L225 Difference]: With dead ends: 44 [2020-10-20 05:51:51,065 INFO L226 Difference]: Without dead ends: 44 [2020-10-20 05:51:51,066 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-20 05:51:51,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-20 05:51:51,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 38. [2020-10-20 05:51:51,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-20 05:51:51,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 41 transitions. [2020-10-20 05:51:51,076 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 41 transitions. Word has length 10 [2020-10-20 05:51:51,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:51:51,077 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 41 transitions. [2020-10-20 05:51:51,077 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 05:51:51,077 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 41 transitions. [2020-10-20 05:51:51,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-20 05:51:51,078 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:51:51,078 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:51:51,078 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-20 05:51:51,078 INFO L429 AbstractCegarLoop]: === Iteration 4 === [cstrreplaceErr2REQUIRES_VIOLATION, cstrreplaceErr3REQUIRES_VIOLATION, cstrreplaceErr4REQUIRES_VIOLATION, cstrreplaceErr5REQUIRES_VIOLATION, cstrreplaceErr0REQUIRES_VIOLATION, cstrreplaceErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 05:51:51,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:51:51,079 INFO L82 PathProgramCache]: Analyzing trace with hash -610210534, now seen corresponding path program 1 times [2020-10-20 05:51:51,079 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:51:51,080 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459277756] [2020-10-20 05:51:51,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:51:51,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:51:51,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 05:51:51,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:51:51,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:51:51,144 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459277756] [2020-10-20 05:51:51,145 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 05:51:51,145 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 05:51:51,145 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001101488] [2020-10-20 05:51:51,146 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 05:51:51,146 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 05:51:51,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 05:51:51,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 05:51:51,147 INFO L87 Difference]: Start difference. First operand 38 states and 41 transitions. Second operand 5 states. [2020-10-20 05:51:51,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:51:51,268 INFO L93 Difference]: Finished difference Result 48 states and 52 transitions. [2020-10-20 05:51:51,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 05:51:51,269 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-10-20 05:51:51,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:51:51,270 INFO L225 Difference]: With dead ends: 48 [2020-10-20 05:51:51,270 INFO L226 Difference]: Without dead ends: 48 [2020-10-20 05:51:51,271 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-20 05:51:51,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-20 05:51:51,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 40. [2020-10-20 05:51:51,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-20 05:51:51,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 44 transitions. [2020-10-20 05:51:51,277 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 44 transitions. Word has length 10 [2020-10-20 05:51:51,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:51:51,277 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 44 transitions. [2020-10-20 05:51:51,277 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 05:51:51,278 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 44 transitions. [2020-10-20 05:51:51,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-20 05:51:51,278 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:51:51,279 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:51:51,279 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-20 05:51:51,279 INFO L429 AbstractCegarLoop]: === Iteration 5 === [cstrreplaceErr2REQUIRES_VIOLATION, cstrreplaceErr3REQUIRES_VIOLATION, cstrreplaceErr4REQUIRES_VIOLATION, cstrreplaceErr5REQUIRES_VIOLATION, cstrreplaceErr0REQUIRES_VIOLATION, cstrreplaceErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 05:51:51,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:51:51,280 INFO L82 PathProgramCache]: Analyzing trace with hash 1176041719, now seen corresponding path program 1 times [2020-10-20 05:51:51,280 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:51:51,280 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932976806] [2020-10-20 05:51:51,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:51:51,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:51:51,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 05:51:51,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:51:51,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:51:51,358 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932976806] [2020-10-20 05:51:51,359 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 05:51:51,359 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-20 05:51:51,359 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920540628] [2020-10-20 05:51:51,360 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-20 05:51:51,360 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 05:51:51,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-20 05:51:51,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-20 05:51:51,361 INFO L87 Difference]: Start difference. First operand 40 states and 44 transitions. Second operand 6 states. [2020-10-20 05:51:51,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:51:51,493 INFO L93 Difference]: Finished difference Result 37 states and 41 transitions. [2020-10-20 05:51:51,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 05:51:51,494 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-10-20 05:51:51,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:51:51,495 INFO L225 Difference]: With dead ends: 37 [2020-10-20 05:51:51,495 INFO L226 Difference]: Without dead ends: 37 [2020-10-20 05:51:51,496 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-20 05:51:51,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-10-20 05:51:51,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-10-20 05:51:51,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-20 05:51:51,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2020-10-20 05:51:51,501 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 14 [2020-10-20 05:51:51,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:51:51,501 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2020-10-20 05:51:51,501 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-20 05:51:51,501 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2020-10-20 05:51:51,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-20 05:51:51,502 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:51:51,502 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:51:51,503 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-20 05:51:51,503 INFO L429 AbstractCegarLoop]: === Iteration 6 === [cstrreplaceErr2REQUIRES_VIOLATION, cstrreplaceErr3REQUIRES_VIOLATION, cstrreplaceErr4REQUIRES_VIOLATION, cstrreplaceErr5REQUIRES_VIOLATION, cstrreplaceErr0REQUIRES_VIOLATION, cstrreplaceErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 05:51:51,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:51:51,504 INFO L82 PathProgramCache]: Analyzing trace with hash 1176041720, now seen corresponding path program 1 times [2020-10-20 05:51:51,504 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:51:51,504 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512610530] [2020-10-20 05:51:51,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:51:51,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:51:51,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 05:51:51,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:51:51,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:51:51,606 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512610530] [2020-10-20 05:51:51,606 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 05:51:51,606 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-20 05:51:51,607 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857782382] [2020-10-20 05:51:51,607 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-20 05:51:51,607 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 05:51:51,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-20 05:51:51,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-20 05:51:51,608 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 7 states. [2020-10-20 05:51:51,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:51:51,811 INFO L93 Difference]: Finished difference Result 47 states and 53 transitions. [2020-10-20 05:51:51,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-20 05:51:51,811 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 14 [2020-10-20 05:51:51,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:51:51,814 INFO L225 Difference]: With dead ends: 47 [2020-10-20 05:51:51,814 INFO L226 Difference]: Without dead ends: 47 [2020-10-20 05:51:51,815 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-10-20 05:51:51,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-10-20 05:51:51,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 42. [2020-10-20 05:51:51,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-10-20 05:51:51,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 48 transitions. [2020-10-20 05:51:51,821 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 48 transitions. Word has length 14 [2020-10-20 05:51:51,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:51:51,821 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 48 transitions. [2020-10-20 05:51:51,822 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-20 05:51:51,822 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 48 transitions. [2020-10-20 05:51:51,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-20 05:51:51,823 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:51:51,823 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:51:51,823 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-20 05:51:51,823 INFO L429 AbstractCegarLoop]: === Iteration 7 === [cstrreplaceErr2REQUIRES_VIOLATION, cstrreplaceErr3REQUIRES_VIOLATION, cstrreplaceErr4REQUIRES_VIOLATION, cstrreplaceErr5REQUIRES_VIOLATION, cstrreplaceErr0REQUIRES_VIOLATION, cstrreplaceErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 05:51:51,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:51:51,824 INFO L82 PathProgramCache]: Analyzing trace with hash 415323869, now seen corresponding path program 1 times [2020-10-20 05:51:51,824 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:51:51,825 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864166934] [2020-10-20 05:51:51,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:51:51,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:51:51,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 05:51:51,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:51:51,954 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:51:51,954 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864166934] [2020-10-20 05:51:51,955 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1429004509] [2020-10-20 05:51:51,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 05:51:52,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:51:52,046 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-20 05:51:52,052 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 05:51:52,133 INFO L384 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 [2020-10-20 05:51:52,133 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 05:51:52,142 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:51:52,143 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 05:51:52,143 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2020-10-20 05:51:52,184 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:51:52,184 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 05:51:52,185 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 6 [2020-10-20 05:51:52,185 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886100486] [2020-10-20 05:51:52,185 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-20 05:51:52,186 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 05:51:52,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-20 05:51:52,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-20 05:51:52,187 INFO L87 Difference]: Start difference. First operand 42 states and 48 transitions. Second operand 7 states. [2020-10-20 05:51:52,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:51:52,317 INFO L93 Difference]: Finished difference Result 49 states and 55 transitions. [2020-10-20 05:51:52,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 05:51:52,318 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 14 [2020-10-20 05:51:52,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:51:52,319 INFO L225 Difference]: With dead ends: 49 [2020-10-20 05:51:52,319 INFO L226 Difference]: Without dead ends: 49 [2020-10-20 05:51:52,319 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-10-20 05:51:52,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-10-20 05:51:52,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 39. [2020-10-20 05:51:52,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-20 05:51:52,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 44 transitions. [2020-10-20 05:51:52,325 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 44 transitions. Word has length 14 [2020-10-20 05:51:52,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:51:52,325 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 44 transitions. [2020-10-20 05:51:52,325 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-20 05:51:52,326 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 44 transitions. [2020-10-20 05:51:52,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-20 05:51:52,326 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:51:52,327 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:51:52,539 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2020-10-20 05:51:52,540 INFO L429 AbstractCegarLoop]: === Iteration 8 === [cstrreplaceErr2REQUIRES_VIOLATION, cstrreplaceErr3REQUIRES_VIOLATION, cstrreplaceErr4REQUIRES_VIOLATION, cstrreplaceErr5REQUIRES_VIOLATION, cstrreplaceErr0REQUIRES_VIOLATION, cstrreplaceErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 05:51:52,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:51:52,541 INFO L82 PathProgramCache]: Analyzing trace with hash -1580673573, now seen corresponding path program 1 times [2020-10-20 05:51:52,541 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:51:52,542 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980125603] [2020-10-20 05:51:52,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:51:52,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:51:52,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 05:51:52,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:51:52,743 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:51:52,743 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980125603] [2020-10-20 05:51:52,744 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 05:51:52,744 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-20 05:51:52,744 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12764691] [2020-10-20 05:51:52,745 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-20 05:51:52,745 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 05:51:52,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-20 05:51:52,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-20 05:51:52,746 INFO L87 Difference]: Start difference. First operand 39 states and 44 transitions. Second operand 9 states. [2020-10-20 05:51:52,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:51:52,990 INFO L93 Difference]: Finished difference Result 51 states and 55 transitions. [2020-10-20 05:51:52,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-20 05:51:52,991 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 19 [2020-10-20 05:51:52,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:51:52,992 INFO L225 Difference]: With dead ends: 51 [2020-10-20 05:51:52,992 INFO L226 Difference]: Without dead ends: 51 [2020-10-20 05:51:52,993 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2020-10-20 05:51:52,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-10-20 05:51:52,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 48. [2020-10-20 05:51:52,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-10-20 05:51:52,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 53 transitions. [2020-10-20 05:51:52,998 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 53 transitions. Word has length 19 [2020-10-20 05:51:52,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:51:52,998 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 53 transitions. [2020-10-20 05:51:52,999 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-20 05:51:52,999 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 53 transitions. [2020-10-20 05:51:52,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-20 05:51:52,999 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:51:53,000 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:51:53,000 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-20 05:51:53,000 INFO L429 AbstractCegarLoop]: === Iteration 9 === [cstrreplaceErr2REQUIRES_VIOLATION, cstrreplaceErr3REQUIRES_VIOLATION, cstrreplaceErr4REQUIRES_VIOLATION, cstrreplaceErr5REQUIRES_VIOLATION, cstrreplaceErr0REQUIRES_VIOLATION, cstrreplaceErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 05:51:53,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:51:53,000 INFO L82 PathProgramCache]: Analyzing trace with hash 2127487709, now seen corresponding path program 1 times [2020-10-20 05:51:53,001 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:51:53,001 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783618208] [2020-10-20 05:51:53,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:51:53,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:51:53,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 05:51:53,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:51:53,220 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:51:53,222 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783618208] [2020-10-20 05:51:53,223 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 05:51:53,223 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-20 05:51:53,223 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420217216] [2020-10-20 05:51:53,224 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-20 05:51:53,225 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 05:51:53,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-20 05:51:53,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-20 05:51:53,226 INFO L87 Difference]: Start difference. First operand 48 states and 53 transitions. Second operand 10 states. [2020-10-20 05:51:53,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:51:53,474 INFO L93 Difference]: Finished difference Result 64 states and 69 transitions. [2020-10-20 05:51:53,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-20 05:51:53,475 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 19 [2020-10-20 05:51:53,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:51:53,476 INFO L225 Difference]: With dead ends: 64 [2020-10-20 05:51:53,476 INFO L226 Difference]: Without dead ends: 64 [2020-10-20 05:51:53,477 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2020-10-20 05:51:53,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-20 05:51:53,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 49. [2020-10-20 05:51:53,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-20 05:51:53,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 55 transitions. [2020-10-20 05:51:53,483 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 55 transitions. Word has length 19 [2020-10-20 05:51:53,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:51:53,483 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 55 transitions. [2020-10-20 05:51:53,484 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-20 05:51:53,484 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 55 transitions. [2020-10-20 05:51:53,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-20 05:51:53,485 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:51:53,485 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:51:53,485 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-20 05:51:53,486 INFO L429 AbstractCegarLoop]: === Iteration 10 === [cstrreplaceErr2REQUIRES_VIOLATION, cstrreplaceErr3REQUIRES_VIOLATION, cstrreplaceErr4REQUIRES_VIOLATION, cstrreplaceErr5REQUIRES_VIOLATION, cstrreplaceErr0REQUIRES_VIOLATION, cstrreplaceErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 05:51:53,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:51:53,486 INFO L82 PathProgramCache]: Analyzing trace with hash -1797581199, now seen corresponding path program 1 times [2020-10-20 05:51:53,487 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:51:53,487 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275432443] [2020-10-20 05:51:53,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:51:53,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:51:53,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 05:51:53,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:51:53,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-20 05:51:53,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:51:53,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:51:53,577 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275432443] [2020-10-20 05:51:53,577 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 05:51:53,577 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-20 05:51:53,578 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105282233] [2020-10-20 05:51:53,578 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-20 05:51:53,578 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 05:51:53,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-20 05:51:53,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-20 05:51:53,579 INFO L87 Difference]: Start difference. First operand 49 states and 55 transitions. Second operand 6 states. [2020-10-20 05:51:53,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:51:53,679 INFO L93 Difference]: Finished difference Result 61 states and 69 transitions. [2020-10-20 05:51:53,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-20 05:51:53,679 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 20 [2020-10-20 05:51:53,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:51:53,680 INFO L225 Difference]: With dead ends: 61 [2020-10-20 05:51:53,680 INFO L226 Difference]: Without dead ends: 42 [2020-10-20 05:51:53,680 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-20 05:51:53,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-20 05:51:53,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 32. [2020-10-20 05:51:53,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-10-20 05:51:53,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2020-10-20 05:51:53,684 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 20 [2020-10-20 05:51:53,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:51:53,684 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2020-10-20 05:51:53,684 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-20 05:51:53,684 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2020-10-20 05:51:53,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-20 05:51:53,685 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:51:53,685 INFO L422 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] [2020-10-20 05:51:53,685 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-20 05:51:53,685 INFO L429 AbstractCegarLoop]: === Iteration 11 === [cstrreplaceErr2REQUIRES_VIOLATION, cstrreplaceErr3REQUIRES_VIOLATION, cstrreplaceErr4REQUIRES_VIOLATION, cstrreplaceErr5REQUIRES_VIOLATION, cstrreplaceErr0REQUIRES_VIOLATION, cstrreplaceErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 05:51:53,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:51:53,686 INFO L82 PathProgramCache]: Analyzing trace with hash 956679290, now seen corresponding path program 1 times [2020-10-20 05:51:53,686 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:51:53,686 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647238884] [2020-10-20 05:51:53,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:51:53,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:51:53,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 05:51:53,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:51:53,775 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:51:53,775 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647238884] [2020-10-20 05:51:53,775 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [945197964] [2020-10-20 05:51:53,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 05:51:53,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:51:53,865 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 20 conjunts are in the unsatisfiable core [2020-10-20 05:51:53,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 05:51:53,991 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:51:53,991 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 05:51:53,991 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 13 [2020-10-20 05:51:53,992 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364047311] [2020-10-20 05:51:53,992 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-20 05:51:53,992 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 05:51:53,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-20 05:51:53,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2020-10-20 05:51:53,993 INFO L87 Difference]: Start difference. First operand 32 states and 35 transitions. Second operand 14 states. [2020-10-20 05:51:54,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:51:54,253 INFO L93 Difference]: Finished difference Result 44 states and 48 transitions. [2020-10-20 05:51:54,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-20 05:51:54,253 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 23 [2020-10-20 05:51:54,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:51:54,254 INFO L225 Difference]: With dead ends: 44 [2020-10-20 05:51:54,254 INFO L226 Difference]: Without dead ends: 44 [2020-10-20 05:51:54,255 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2020-10-20 05:51:54,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-20 05:51:54,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 39. [2020-10-20 05:51:54,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-20 05:51:54,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2020-10-20 05:51:54,258 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 23 [2020-10-20 05:51:54,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:51:54,258 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2020-10-20 05:51:54,258 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-20 05:51:54,259 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2020-10-20 05:51:54,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-20 05:51:54,259 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:51:54,259 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:51:54,468 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 05:51:54,469 INFO L429 AbstractCegarLoop]: === Iteration 12 === [cstrreplaceErr2REQUIRES_VIOLATION, cstrreplaceErr3REQUIRES_VIOLATION, cstrreplaceErr4REQUIRES_VIOLATION, cstrreplaceErr5REQUIRES_VIOLATION, cstrreplaceErr0REQUIRES_VIOLATION, cstrreplaceErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 05:51:54,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:51:54,469 INFO L82 PathProgramCache]: Analyzing trace with hash -403117159, now seen corresponding path program 2 times [2020-10-20 05:51:54,469 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:51:54,469 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937142249] [2020-10-20 05:51:54,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:51:54,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:51:54,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 05:51:54,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:51:54,751 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:51:54,752 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937142249] [2020-10-20 05:51:54,752 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1114906496] [2020-10-20 05:51:54,752 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 05:51:54,845 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-20 05:51:54,845 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 05:51:54,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 29 conjunts are in the unsatisfiable core [2020-10-20 05:51:54,849 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 05:51:54,963 INFO L384 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 14 treesize of output 10 [2020-10-20 05:51:54,964 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 05:51:54,971 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:51:54,973 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-20 05:51:54,973 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:24, output treesize:20 [2020-10-20 05:51:55,206 INFO L384 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 [2020-10-20 05:51:55,207 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 05:51:55,209 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:51:55,209 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-20 05:51:55,209 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:3 [2020-10-20 05:51:55,212 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:51:55,213 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 05:51:55,213 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 19 [2020-10-20 05:51:55,213 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284960794] [2020-10-20 05:51:55,214 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-20 05:51:55,214 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 05:51:55,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-20 05:51:55,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2020-10-20 05:51:55,214 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand 19 states. [2020-10-20 05:51:55,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:51:55,737 INFO L93 Difference]: Finished difference Result 59 states and 64 transitions. [2020-10-20 05:51:55,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-20 05:51:55,738 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 28 [2020-10-20 05:51:55,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:51:55,739 INFO L225 Difference]: With dead ends: 59 [2020-10-20 05:51:55,739 INFO L226 Difference]: Without dead ends: 46 [2020-10-20 05:51:55,740 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=106, Invalid=596, Unknown=0, NotChecked=0, Total=702 [2020-10-20 05:51:55,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-20 05:51:55,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 43. [2020-10-20 05:51:55,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-20 05:51:55,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2020-10-20 05:51:55,743 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 28 [2020-10-20 05:51:55,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:51:55,744 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2020-10-20 05:51:55,744 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-20 05:51:55,744 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2020-10-20 05:51:55,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-20 05:51:55,745 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:51:55,745 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:51:55,948 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2020-10-20 05:51:55,949 INFO L429 AbstractCegarLoop]: === Iteration 13 === [cstrreplaceErr2REQUIRES_VIOLATION, cstrreplaceErr3REQUIRES_VIOLATION, cstrreplaceErr4REQUIRES_VIOLATION, cstrreplaceErr5REQUIRES_VIOLATION, cstrreplaceErr0REQUIRES_VIOLATION, cstrreplaceErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 05:51:55,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:51:55,950 INFO L82 PathProgramCache]: Analyzing trace with hash -1476818276, now seen corresponding path program 3 times [2020-10-20 05:51:55,950 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:51:55,951 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168020271] [2020-10-20 05:51:55,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:51:55,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:51:56,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 05:51:56,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:51:56,114 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:51:56,114 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168020271] [2020-10-20 05:51:56,114 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1804165178] [2020-10-20 05:51:56,114 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 05:51:56,217 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-20 05:51:56,217 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 05:51:56,219 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 24 conjunts are in the unsatisfiable core [2020-10-20 05:51:56,222 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 05:51:56,466 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:51:56,467 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 05:51:56,467 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 18 [2020-10-20 05:51:56,467 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881591054] [2020-10-20 05:51:56,468 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-20 05:51:56,468 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 05:51:56,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-20 05:51:56,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2020-10-20 05:51:56,469 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand 19 states. [2020-10-20 05:51:56,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:51:56,875 INFO L93 Difference]: Finished difference Result 52 states and 57 transitions. [2020-10-20 05:51:56,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-20 05:51:56,876 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 32 [2020-10-20 05:51:56,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:51:56,876 INFO L225 Difference]: With dead ends: 52 [2020-10-20 05:51:56,877 INFO L226 Difference]: Without dead ends: 52 [2020-10-20 05:51:56,877 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=91, Invalid=461, Unknown=0, NotChecked=0, Total=552 [2020-10-20 05:51:56,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-20 05:51:56,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 50. [2020-10-20 05:51:56,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-20 05:51:56,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 55 transitions. [2020-10-20 05:51:56,882 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 55 transitions. Word has length 32 [2020-10-20 05:51:56,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:51:56,882 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 55 transitions. [2020-10-20 05:51:56,882 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-20 05:51:56,883 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 55 transitions. [2020-10-20 05:51:56,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-20 05:51:56,884 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:51:56,884 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:51:57,095 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 05:51:57,096 INFO L429 AbstractCegarLoop]: === Iteration 14 === [cstrreplaceErr2REQUIRES_VIOLATION, cstrreplaceErr3REQUIRES_VIOLATION, cstrreplaceErr4REQUIRES_VIOLATION, cstrreplaceErr5REQUIRES_VIOLATION, cstrreplaceErr0REQUIRES_VIOLATION, cstrreplaceErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 05:51:57,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:51:57,096 INFO L82 PathProgramCache]: Analyzing trace with hash -227169609, now seen corresponding path program 4 times [2020-10-20 05:51:57,097 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:51:57,097 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052793344] [2020-10-20 05:51:57,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:51:57,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:51:57,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 05:51:57,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:51:57,336 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 9 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:51:57,336 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052793344] [2020-10-20 05:51:57,336 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [74000481] [2020-10-20 05:51:57,336 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 05:51:57,434 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-20 05:51:57,434 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 05:51:57,436 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 31 conjunts are in the unsatisfiable core [2020-10-20 05:51:57,438 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 05:51:57,451 INFO L384 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 [2020-10-20 05:51:57,451 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 05:51:57,462 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:51:57,463 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 05:51:57,463 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2020-10-20 05:51:57,570 INFO L384 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 15 treesize of output 11 [2020-10-20 05:51:57,571 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 05:51:57,575 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:51:57,576 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-20 05:51:57,576 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:21, output treesize:17 [2020-10-20 05:51:57,785 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 18 [2020-10-20 05:51:57,787 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-20 05:51:57,795 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:51:57,804 INFO L173 IndexEqualityManager]: detected equality via solver [2020-10-20 05:51:57,806 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:51:57,806 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 10 [2020-10-20 05:51:57,807 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-20 05:51:57,816 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:51:57,818 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-20 05:51:57,818 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:34, output treesize:3 [2020-10-20 05:51:57,823 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 16 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:51:57,823 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 05:51:57,824 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 24 [2020-10-20 05:51:57,824 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690899216] [2020-10-20 05:51:57,824 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-20 05:51:57,824 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 05:51:57,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-20 05:51:57,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=497, Unknown=0, NotChecked=0, Total=552 [2020-10-20 05:51:57,825 INFO L87 Difference]: Start difference. First operand 50 states and 55 transitions. Second operand 24 states. [2020-10-20 05:51:58,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:51:58,880 INFO L93 Difference]: Finished difference Result 89 states and 95 transitions. [2020-10-20 05:51:58,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-20 05:51:58,881 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 37 [2020-10-20 05:51:58,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:51:58,882 INFO L225 Difference]: With dead ends: 89 [2020-10-20 05:51:58,883 INFO L226 Difference]: Without dead ends: 57 [2020-10-20 05:51:58,885 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=193, Invalid=1529, Unknown=0, NotChecked=0, Total=1722 [2020-10-20 05:51:58,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-10-20 05:51:58,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 54. [2020-10-20 05:51:58,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-20 05:51:58,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 59 transitions. [2020-10-20 05:51:58,888 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 59 transitions. Word has length 37 [2020-10-20 05:51:58,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:51:58,889 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 59 transitions. [2020-10-20 05:51:58,889 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-20 05:51:58,889 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 59 transitions. [2020-10-20 05:51:58,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-20 05:51:58,890 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:51:58,890 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:51:59,102 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-10-20 05:51:59,103 INFO L429 AbstractCegarLoop]: === Iteration 15 === [cstrreplaceErr2REQUIRES_VIOLATION, cstrreplaceErr3REQUIRES_VIOLATION, cstrreplaceErr4REQUIRES_VIOLATION, cstrreplaceErr5REQUIRES_VIOLATION, cstrreplaceErr0REQUIRES_VIOLATION, cstrreplaceErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 05:51:59,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:51:59,104 INFO L82 PathProgramCache]: Analyzing trace with hash -1399570668, now seen corresponding path program 5 times [2020-10-20 05:51:59,104 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:51:59,105 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325481623] [2020-10-20 05:51:59,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:51:59,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:51:59,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 05:51:59,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:51:59,261 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 1 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:51:59,261 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325481623] [2020-10-20 05:51:59,261 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1462667898] [2020-10-20 05:51:59,262 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 05:51:59,365 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2020-10-20 05:51:59,365 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 05:51:59,367 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 36 conjunts are in the unsatisfiable core [2020-10-20 05:51:59,370 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 05:51:59,389 INFO L384 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 [2020-10-20 05:51:59,389 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 05:51:59,396 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:51:59,397 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 05:51:59,397 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2020-10-20 05:51:59,494 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 6 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:51:59,494 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 05:51:59,494 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 15 [2020-10-20 05:51:59,495 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830635655] [2020-10-20 05:51:59,495 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-20 05:51:59,495 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 05:51:59,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-20 05:51:59,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2020-10-20 05:51:59,496 INFO L87 Difference]: Start difference. First operand 54 states and 59 transitions. Second operand 16 states. [2020-10-20 05:51:59,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:51:59,999 INFO L93 Difference]: Finished difference Result 63 states and 69 transitions. [2020-10-20 05:52:00,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-20 05:52:00,000 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 41 [2020-10-20 05:52:00,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:52:00,001 INFO L225 Difference]: With dead ends: 63 [2020-10-20 05:52:00,002 INFO L226 Difference]: Without dead ends: 63 [2020-10-20 05:52:00,002 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=389, Unknown=0, NotChecked=0, Total=462 [2020-10-20 05:52:00,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-10-20 05:52:00,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 61. [2020-10-20 05:52:00,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-20 05:52:00,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 67 transitions. [2020-10-20 05:52:00,006 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 67 transitions. Word has length 41 [2020-10-20 05:52:00,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:52:00,007 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 67 transitions. [2020-10-20 05:52:00,007 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-20 05:52:00,007 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 67 transitions. [2020-10-20 05:52:00,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-20 05:52:00,009 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:52:00,009 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:52:00,219 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 05:52:00,220 INFO L429 AbstractCegarLoop]: === Iteration 16 === [cstrreplaceErr2REQUIRES_VIOLATION, cstrreplaceErr3REQUIRES_VIOLATION, cstrreplaceErr4REQUIRES_VIOLATION, cstrreplaceErr5REQUIRES_VIOLATION, cstrreplaceErr0REQUIRES_VIOLATION, cstrreplaceErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 05:52:00,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:52:00,220 INFO L82 PathProgramCache]: Analyzing trace with hash -1288634049, now seen corresponding path program 6 times [2020-10-20 05:52:00,221 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:52:00,221 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630456081] [2020-10-20 05:52:00,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:52:00,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:52:00,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 05:52:00,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:52:00,508 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 13 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:52:00,509 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630456081] [2020-10-20 05:52:00,509 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1909348576] [2020-10-20 05:52:00,509 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 05:52:00,611 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2020-10-20 05:52:00,611 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 05:52:00,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 41 conjunts are in the unsatisfiable core [2020-10-20 05:52:00,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 05:52:00,756 INFO L384 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 14 treesize of output 10 [2020-10-20 05:52:00,756 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 05:52:00,763 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:52:00,764 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-20 05:52:00,764 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:21, output treesize:17 [2020-10-20 05:52:00,932 INFO L384 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 [2020-10-20 05:52:00,932 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 05:52:00,934 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:52:00,934 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-20 05:52:00,935 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:15, output treesize:3 [2020-10-20 05:52:00,939 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 13 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:52:00,939 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 05:52:00,939 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15] total 25 [2020-10-20 05:52:00,940 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691347121] [2020-10-20 05:52:00,940 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-20 05:52:00,940 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 05:52:00,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-20 05:52:00,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=541, Unknown=0, NotChecked=0, Total=600 [2020-10-20 05:52:00,941 INFO L87 Difference]: Start difference. First operand 61 states and 67 transitions. Second operand 25 states. [2020-10-20 05:52:01,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:52:01,763 INFO L93 Difference]: Finished difference Result 104 states and 113 transitions. [2020-10-20 05:52:01,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-20 05:52:01,764 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 46 [2020-10-20 05:52:01,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:52:01,765 INFO L225 Difference]: With dead ends: 104 [2020-10-20 05:52:01,765 INFO L226 Difference]: Without dead ends: 68 [2020-10-20 05:52:01,766 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=148, Invalid=1258, Unknown=0, NotChecked=0, Total=1406 [2020-10-20 05:52:01,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-20 05:52:01,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 65. [2020-10-20 05:52:01,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-10-20 05:52:01,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 71 transitions. [2020-10-20 05:52:01,769 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 71 transitions. Word has length 46 [2020-10-20 05:52:01,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:52:01,770 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 71 transitions. [2020-10-20 05:52:01,770 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-20 05:52:01,770 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 71 transitions. [2020-10-20 05:52:01,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-20 05:52:01,771 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:52:01,771 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:52:01,981 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-10-20 05:52:01,982 INFO L429 AbstractCegarLoop]: === Iteration 17 === [cstrreplaceErr2REQUIRES_VIOLATION, cstrreplaceErr3REQUIRES_VIOLATION, cstrreplaceErr4REQUIRES_VIOLATION, cstrreplaceErr5REQUIRES_VIOLATION, cstrreplaceErr0REQUIRES_VIOLATION, cstrreplaceErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 05:52:01,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:52:01,982 INFO L82 PathProgramCache]: Analyzing trace with hash -1360591486, now seen corresponding path program 7 times [2020-10-20 05:52:01,983 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:52:01,983 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821747652] [2020-10-20 05:52:01,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:52:01,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:52:02,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 05:52:02,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:52:02,190 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 6 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:52:02,190 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821747652] [2020-10-20 05:52:02,190 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2127419262] [2020-10-20 05:52:02,191 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 05:52:02,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:52:02,283 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 35 conjunts are in the unsatisfiable core [2020-10-20 05:52:02,298 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 05:52:02,481 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 15 proven. 47 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:52:02,481 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 05:52:02,481 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 22 [2020-10-20 05:52:02,482 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89502] [2020-10-20 05:52:02,482 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-20 05:52:02,483 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 05:52:02,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-20 05:52:02,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=439, Unknown=0, NotChecked=0, Total=506 [2020-10-20 05:52:02,483 INFO L87 Difference]: Start difference. First operand 65 states and 71 transitions. Second operand 23 states. [2020-10-20 05:52:03,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:52:03,153 INFO L93 Difference]: Finished difference Result 74 states and 81 transitions. [2020-10-20 05:52:03,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-20 05:52:03,154 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 50 [2020-10-20 05:52:03,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:52:03,155 INFO L225 Difference]: With dead ends: 74 [2020-10-20 05:52:03,156 INFO L226 Difference]: Without dead ends: 74 [2020-10-20 05:52:03,156 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=121, Invalid=749, Unknown=0, NotChecked=0, Total=870 [2020-10-20 05:52:03,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-20 05:52:03,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 72. [2020-10-20 05:52:03,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-10-20 05:52:03,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 79 transitions. [2020-10-20 05:52:03,160 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 79 transitions. Word has length 50 [2020-10-20 05:52:03,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:52:03,160 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 79 transitions. [2020-10-20 05:52:03,160 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-20 05:52:03,160 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 79 transitions. [2020-10-20 05:52:03,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-20 05:52:03,161 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:52:03,161 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:52:03,371 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-10-20 05:52:03,372 INFO L429 AbstractCegarLoop]: === Iteration 18 === [cstrreplaceErr2REQUIRES_VIOLATION, cstrreplaceErr3REQUIRES_VIOLATION, cstrreplaceErr4REQUIRES_VIOLATION, cstrreplaceErr5REQUIRES_VIOLATION, cstrreplaceErr0REQUIRES_VIOLATION, cstrreplaceErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 05:52:03,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:52:03,373 INFO L82 PathProgramCache]: Analyzing trace with hash -278982767, now seen corresponding path program 8 times [2020-10-20 05:52:03,373 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:52:03,373 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538523465] [2020-10-20 05:52:03,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:52:03,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:52:03,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 05:52:03,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:52:03,703 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 17 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:52:03,703 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538523465] [2020-10-20 05:52:03,704 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1753310654] [2020-10-20 05:52:03,704 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 05:52:03,800 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-20 05:52:03,800 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 05:52:03,802 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 47 conjunts are in the unsatisfiable core [2020-10-20 05:52:03,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 05:52:03,973 INFO L384 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 14 treesize of output 10 [2020-10-20 05:52:03,973 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 05:52:03,979 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:52:03,980 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-20 05:52:03,980 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:21, output treesize:17 [2020-10-20 05:52:04,168 INFO L384 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 [2020-10-20 05:52:04,168 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 05:52:04,170 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:52:04,170 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-20 05:52:04,170 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:15, output treesize:3 [2020-10-20 05:52:04,176 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 17 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:52:04,176 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 05:52:04,176 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17] total 28 [2020-10-20 05:52:04,176 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059624086] [2020-10-20 05:52:04,177 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-20 05:52:04,177 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 05:52:04,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-20 05:52:04,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=690, Unknown=0, NotChecked=0, Total=756 [2020-10-20 05:52:04,178 INFO L87 Difference]: Start difference. First operand 72 states and 79 transitions. Second operand 28 states. [2020-10-20 05:52:05,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:52:05,615 INFO L93 Difference]: Finished difference Result 128 states and 140 transitions. [2020-10-20 05:52:05,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-20 05:52:05,616 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 55 [2020-10-20 05:52:05,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:52:05,617 INFO L225 Difference]: With dead ends: 128 [2020-10-20 05:52:05,617 INFO L226 Difference]: Without dead ends: 79 [2020-10-20 05:52:05,618 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=167, Invalid=1639, Unknown=0, NotChecked=0, Total=1806 [2020-10-20 05:52:05,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-10-20 05:52:05,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 76. [2020-10-20 05:52:05,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-10-20 05:52:05,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 83 transitions. [2020-10-20 05:52:05,623 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 83 transitions. Word has length 55 [2020-10-20 05:52:05,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:52:05,624 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 83 transitions. [2020-10-20 05:52:05,624 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-20 05:52:05,625 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 83 transitions. [2020-10-20 05:52:05,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-20 05:52:05,626 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:52:05,626 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:52:05,836 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-10-20 05:52:05,837 INFO L429 AbstractCegarLoop]: === Iteration 19 === [cstrreplaceErr2REQUIRES_VIOLATION, cstrreplaceErr3REQUIRES_VIOLATION, cstrreplaceErr4REQUIRES_VIOLATION, cstrreplaceErr5REQUIRES_VIOLATION, cstrreplaceErr0REQUIRES_VIOLATION, cstrreplaceErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 05:52:05,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:52:05,838 INFO L82 PathProgramCache]: Analyzing trace with hash -714725714, now seen corresponding path program 9 times [2020-10-20 05:52:05,838 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:52:05,838 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051588314] [2020-10-20 05:52:05,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:52:05,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:52:06,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 05:52:06,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:52:06,144 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 15 proven. 85 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:52:06,145 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051588314] [2020-10-20 05:52:06,145 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [895631910] [2020-10-20 05:52:06,146 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 05:52:06,328 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2020-10-20 05:52:06,329 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 05:52:06,331 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 33 conjunts are in the unsatisfiable core [2020-10-20 05:52:06,334 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 05:52:06,342 INFO L384 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 [2020-10-20 05:52:06,343 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 05:52:06,348 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:52:06,349 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 05:52:06,349 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-10-20 05:52:06,405 INFO L384 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 16 treesize of output 12 [2020-10-20 05:52:06,405 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 05:52:06,411 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:52:06,412 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-20 05:52:06,413 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:23, output treesize:19 [2020-10-20 05:52:06,610 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:52:06,610 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 20 [2020-10-20 05:52:06,611 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-10-20 05:52:06,623 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:52:06,624 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-20 05:52:06,629 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 3 xjuncts. [2020-10-20 05:52:06,630 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:26, output treesize:16 [2020-10-20 05:52:06,675 INFO L603 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-10-20 05:52:06,816 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2020-10-20 05:52:06,817 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 05:52:06,817 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 9] total 23 [2020-10-20 05:52:06,817 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558143833] [2020-10-20 05:52:06,817 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-20 05:52:06,818 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 05:52:06,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-20 05:52:06,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=473, Unknown=0, NotChecked=0, Total=552 [2020-10-20 05:52:06,818 INFO L87 Difference]: Start difference. First operand 76 states and 83 transitions. Second operand 24 states. [2020-10-20 05:52:07,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:52:07,969 INFO L93 Difference]: Finished difference Result 75 states and 82 transitions. [2020-10-20 05:52:07,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-20 05:52:07,970 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 59 [2020-10-20 05:52:07,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:52:07,971 INFO L225 Difference]: With dead ends: 75 [2020-10-20 05:52:07,971 INFO L226 Difference]: Without dead ends: 0 [2020-10-20 05:52:07,972 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=197, Invalid=993, Unknown=0, NotChecked=0, Total=1190 [2020-10-20 05:52:07,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-20 05:52:07,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-20 05:52:07,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-20 05:52:07,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-20 05:52:07,972 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 59 [2020-10-20 05:52:07,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:52:07,973 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 05:52:07,973 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-20 05:52:07,973 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-20 05:52:07,973 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-20 05:52:08,174 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 05:52:08,180 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 05:52:08 BoogieIcfgContainer [2020-10-20 05:52:08,180 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 05:52:08,181 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 05:52:08,181 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 05:52:08,181 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 05:52:08,181 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 05:51:50" (3/4) ... [2020-10-20 05:52:08,185 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-20 05:52:08,192 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2020-10-20 05:52:08,192 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure cstrreplace [2020-10-20 05:52:08,192 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_32 [2020-10-20 05:52:08,193 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_64 [2020-10-20 05:52:08,193 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint16_identity [2020-10-20 05:52:08,193 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint64_identity [2020-10-20 05:52:08,193 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2020-10-20 05:52:08,193 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint32_identity [2020-10-20 05:52:08,198 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-10-20 05:52:08,198 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-10-20 05:52:08,198 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-20 05:52:08,199 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-20 05:52:08,245 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-20 05:52:08,245 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 05:52:08,247 INFO L168 Benchmark]: Toolchain (without parser) took 19529.98 ms. Allocated memory was 36.2 MB in the beginning and 123.2 MB in the end (delta: 87.0 MB). Free memory was 15.2 MB in the beginning and 72.2 MB in the end (delta: -57.0 MB). Peak memory consumption was 30.1 MB. Max. memory is 14.3 GB. [2020-10-20 05:52:08,247 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 34.1 MB. Free memory was 9.7 MB in the beginning and 9.7 MB in the end (delta: 45.7 kB). Peak memory consumption was 45.7 kB. Max. memory is 14.3 GB. [2020-10-20 05:52:08,248 INFO L168 Benchmark]: CACSL2BoogieTranslator took 614.54 ms. Allocated memory was 36.2 MB in the beginning and 47.2 MB in the end (delta: 11.0 MB). Free memory was 14.3 MB in the beginning and 29.2 MB in the end (delta: -14.9 MB). Peak memory consumption was 13.8 MB. Max. memory is 14.3 GB. [2020-10-20 05:52:08,248 INFO L168 Benchmark]: Boogie Preprocessor took 94.60 ms. Allocated memory is still 47.2 MB. Free memory was 29.2 MB in the beginning and 26.7 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.3 GB. [2020-10-20 05:52:08,248 INFO L168 Benchmark]: RCFGBuilder took 667.35 ms. Allocated memory was 47.2 MB in the beginning and 49.3 MB in the end (delta: 2.1 MB). Free memory was 26.5 MB in the beginning and 18.3 MB in the end (delta: 8.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 14.3 GB. [2020-10-20 05:52:08,249 INFO L168 Benchmark]: TraceAbstraction took 18079.66 ms. Allocated memory was 49.3 MB in the beginning and 123.2 MB in the end (delta: 73.9 MB). Free memory was 17.7 MB in the beginning and 76.0 MB in the end (delta: -58.3 MB). Peak memory consumption was 15.6 MB. Max. memory is 14.3 GB. [2020-10-20 05:52:08,252 INFO L168 Benchmark]: Witness Printer took 64.46 ms. Allocated memory is still 123.2 MB. Free memory was 76.0 MB in the beginning and 72.2 MB in the end (delta: 3.8 MB). Peak memory consumption was 3.8 MB. Max. memory is 14.3 GB. [2020-10-20 05:52:08,254 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 34.1 MB. Free memory was 9.7 MB in the beginning and 9.7 MB in the end (delta: 45.7 kB). Peak memory consumption was 45.7 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 614.54 ms. Allocated memory was 36.2 MB in the beginning and 47.2 MB in the end (delta: 11.0 MB). Free memory was 14.3 MB in the beginning and 29.2 MB in the end (delta: -14.9 MB). Peak memory consumption was 13.8 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 94.60 ms. Allocated memory is still 47.2 MB. Free memory was 29.2 MB in the beginning and 26.7 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.3 GB. * RCFGBuilder took 667.35 ms. Allocated memory was 47.2 MB in the beginning and 49.3 MB in the end (delta: 2.1 MB). Free memory was 26.5 MB in the beginning and 18.3 MB in the end (delta: 8.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 14.3 GB. * TraceAbstraction took 18079.66 ms. Allocated memory was 49.3 MB in the beginning and 123.2 MB in the end (delta: 73.9 MB). Free memory was 17.7 MB in the beginning and 76.0 MB in the end (delta: -58.3 MB). Peak memory consumption was 15.6 MB. Max. memory is 14.3 GB. * Witness Printer took 64.46 ms. Allocated memory is still 123.2 MB. Free memory was 76.0 MB in the beginning and 72.2 MB in the end (delta: 3.8 MB). Peak memory consumption was 3.8 MB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 518]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 518]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 519]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 519]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 517]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 517]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 538]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 538]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 526]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 535]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 535]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - AllSpecificationsHoldResult: All specifications hold 11 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 57 locations, 11 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 18.0s, OverallIterations: 19, TraceHistogramMax: 5, AutomataDifference: 8.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 488 SDtfs, 1586 SDslu, 1178 SDs, 0 SdLazy, 6251 SolverSat, 317 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 679 GetRequests, 344 SyntacticMatches, 6 SemanticMatches, 329 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1097 ImplicationChecksByTransitivity, 6.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=76occurred in iteration=18, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 19 MinimizatonAttempts, 80 StatesRemovedByMinimization, 15 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 5.5s InterpolantComputationTime, 896 NumberOfCodeBlocks, 896 NumberOfCodeBlocksAsserted, 46 NumberOfCheckSat, 867 ConstructedInterpolants, 44 QuantifiedInterpolants, 278362 SizeOfPredicates, 86 NumberOfNonLiveVariables, 1597 ConjunctsInSsa, 307 ConjunctsInUnsatCore, 29 InterpolantComputations, 9 PerfectInterpolantSequences, 221/754 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 proved your program to be correct! Received shutdown request...