./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/memsafety/test-0019-1.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/memsafety/test-0019-1.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 c2707018625c82fb11b0c17a966b82b37a0c8e83 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 05:53:35,385 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 05:53:35,387 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 05:53:35,412 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 05:53:35,413 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 05:53:35,415 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 05:53:35,416 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 05:53:35,431 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 05:53:35,435 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 05:53:35,436 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 05:53:35,438 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 05:53:35,439 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 05:53:35,442 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 05:53:35,444 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 05:53:35,448 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 05:53:35,450 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 05:53:35,451 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 05:53:35,452 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 05:53:35,455 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 05:53:35,457 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 05:53:35,459 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 05:53:35,461 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 05:53:35,462 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 05:53:35,464 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 05:53:35,467 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 05:53:35,467 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 05:53:35,467 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 05:53:35,469 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 05:53:35,469 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 05:53:35,470 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 05:53:35,471 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 05:53:35,472 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 05:53:35,473 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 05:53:35,474 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 05:53:35,475 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 05:53:35,476 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 05:53:35,477 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 05:53:35,477 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 05:53:35,478 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 05:53:35,479 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 05:53:35,480 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 05:53:35,481 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2020-10-20 05:53:35,506 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 05:53:35,506 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 05:53:35,508 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 05:53:35,508 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 05:53:35,509 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 05:53:35,509 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 05:53:35,509 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 05:53:35,509 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-20 05:53:35,510 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 05:53:35,510 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 05:53:35,510 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 05:53:35,510 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-10-20 05:53:35,511 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-10-20 05:53:35,511 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-10-20 05:53:35,511 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 05:53:35,511 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-10-20 05:53:35,512 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 05:53:35,512 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 05:53:35,512 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 05:53:35,512 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 05:53:35,513 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 05:53:35,513 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 05:53:35,513 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 05:53:35,514 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 05:53:35,514 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 05:53:35,514 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 05:53:35,514 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 05:53:35,515 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 05:53:35,515 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 -> c2707018625c82fb11b0c17a966b82b37a0c8e83 [2020-10-20 05:53:35,749 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 05:53:35,764 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 05:53:35,768 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 05:53:35,770 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 05:53:35,771 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 05:53:35,772 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memsafety/test-0019-1.i [2020-10-20 05:53:35,861 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/098663344/21892e83df3e4b42a262590b5f70fff4/FLAG170c16ddb [2020-10-20 05:53:36,531 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 05:53:36,532 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memsafety/test-0019-1.i [2020-10-20 05:53:36,547 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/098663344/21892e83df3e4b42a262590b5f70fff4/FLAG170c16ddb [2020-10-20 05:53:36,839 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/098663344/21892e83df3e4b42a262590b5f70fff4 [2020-10-20 05:53:36,853 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 05:53:36,859 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-20 05:53:36,861 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 05:53:36,861 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 05:53:36,864 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 05:53:36,866 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 05:53:36" (1/1) ... [2020-10-20 05:53:36,869 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62d99696 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:53:36, skipping insertion in model container [2020-10-20 05:53:36,869 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 05:53:36" (1/1) ... [2020-10-20 05:53:36,877 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 05:53:36,914 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 05:53:37,207 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 05:53:37,219 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 05:53:37,269 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 05:53:37,325 INFO L208 MainTranslator]: Completed translation [2020-10-20 05:53:37,326 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:53:37 WrapperNode [2020-10-20 05:53:37,326 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 05:53:37,327 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 05:53:37,327 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 05:53:37,327 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 05:53:37,341 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:53:37" (1/1) ... [2020-10-20 05:53:37,341 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:53:37" (1/1) ... [2020-10-20 05:53:37,361 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:53:37" (1/1) ... [2020-10-20 05:53:37,362 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:53:37" (1/1) ... [2020-10-20 05:53:37,378 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:53:37" (1/1) ... [2020-10-20 05:53:37,380 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:53:37" (1/1) ... [2020-10-20 05:53:37,384 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:53:37" (1/1) ... [2020-10-20 05:53:37,391 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 05:53:37,392 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 05:53:37,392 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 05:53:37,393 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 05:53:37,394 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:53:37" (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 05:53:37,487 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-20 05:53:37,488 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 05:53:37,488 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-20 05:53:37,489 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-20 05:53:37,489 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-20 05:53:37,490 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2020-10-20 05:53:37,490 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2020-10-20 05:53:37,490 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2020-10-20 05:53:37,490 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_data [2020-10-20 05:53:37,491 INFO L138 BoogieDeclarations]: Found implementation of procedure free_data [2020-10-20 05:53:37,491 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-20 05:53:37,491 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-20 05:53:37,491 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-20 05:53:37,492 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-20 05:53:37,492 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-20 05:53:37,492 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-20 05:53:37,493 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 05:53:37,493 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-20 05:53:37,493 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-20 05:53:37,493 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-20 05:53:37,494 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-20 05:53:37,494 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-20 05:53:37,495 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-20 05:53:37,495 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-20 05:53:37,495 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-20 05:53:37,495 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-20 05:53:37,496 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-20 05:53:37,496 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-20 05:53:37,496 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-20 05:53:37,496 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-20 05:53:37,497 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-20 05:53:37,497 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-20 05:53:37,497 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-20 05:53:37,497 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-20 05:53:37,498 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-20 05:53:37,498 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2020-10-20 05:53:37,498 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2020-10-20 05:53:37,498 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2020-10-20 05:53:37,499 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-20 05:53:37,499 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-20 05:53:37,499 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-20 05:53:37,499 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-20 05:53:37,500 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-20 05:53:37,500 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-20 05:53:37,500 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-20 05:53:37,500 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-20 05:53:37,500 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-20 05:53:37,501 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-20 05:53:37,501 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-20 05:53:37,501 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-20 05:53:37,501 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-20 05:53:37,501 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-20 05:53:37,502 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-20 05:53:37,502 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-20 05:53:37,502 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-20 05:53:37,502 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-20 05:53:37,503 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-20 05:53:37,503 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-20 05:53:37,503 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-20 05:53:37,503 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-20 05:53:37,503 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-20 05:53:37,504 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-20 05:53:37,504 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-20 05:53:37,504 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-20 05:53:37,504 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-20 05:53:37,504 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-20 05:53:37,505 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-20 05:53:37,505 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-20 05:53:37,505 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-20 05:53:37,505 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-20 05:53:37,506 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-20 05:53:37,506 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-20 05:53:37,506 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-20 05:53:37,506 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-20 05:53:37,506 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-20 05:53:37,507 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-20 05:53:37,507 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-20 05:53:37,507 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-20 05:53:37,507 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-20 05:53:37,507 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-20 05:53:37,508 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-20 05:53:37,508 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-20 05:53:37,508 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-20 05:53:37,508 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-20 05:53:37,509 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-20 05:53:37,509 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-20 05:53:37,509 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-20 05:53:37,509 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-20 05:53:37,509 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-20 05:53:37,509 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-20 05:53:37,510 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-20 05:53:37,510 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-20 05:53:37,510 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-20 05:53:37,510 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-20 05:53:37,510 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-20 05:53:37,511 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-20 05:53:37,511 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-20 05:53:37,511 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-20 05:53:37,511 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-20 05:53:37,511 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-20 05:53:37,512 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-20 05:53:37,512 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-20 05:53:37,512 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-20 05:53:37,512 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-20 05:53:37,512 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-20 05:53:37,513 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-20 05:53:37,513 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-20 05:53:37,513 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-20 05:53:37,513 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-20 05:53:37,513 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-20 05:53:37,514 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-20 05:53:37,514 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-20 05:53:37,514 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-20 05:53:37,514 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-20 05:53:37,514 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-20 05:53:37,515 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-20 05:53:37,515 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-20 05:53:37,515 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-20 05:53:37,515 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-20 05:53:37,515 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-20 05:53:37,516 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-20 05:53:37,516 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-20 05:53:37,516 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-20 05:53:37,516 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_data [2020-10-20 05:53:37,516 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-20 05:53:37,517 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-20 05:53:37,517 INFO L130 BoogieDeclarations]: Found specification of procedure free_data [2020-10-20 05:53:37,517 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-20 05:53:37,517 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-20 05:53:37,517 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-20 05:53:37,518 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-20 05:53:37,518 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-20 05:53:37,518 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 05:53:37,518 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-20 05:53:37,519 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-20 05:53:38,122 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 05:53:38,122 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-20 05:53:38,128 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 05:53:38 BoogieIcfgContainer [2020-10-20 05:53:38,129 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 05:53:38,130 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 05:53:38,131 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 05:53:38,134 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 05:53:38,135 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 05:53:36" (1/3) ... [2020-10-20 05:53:38,136 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e413110 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 05:53:38, skipping insertion in model container [2020-10-20 05:53:38,136 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:53:37" (2/3) ... [2020-10-20 05:53:38,137 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e413110 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 05:53:38, skipping insertion in model container [2020-10-20 05:53:38,137 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 05:53:38" (3/3) ... [2020-10-20 05:53:38,139 INFO L111 eAbstractionObserver]: Analyzing ICFG test-0019-1.i [2020-10-20 05:53:38,153 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 05:53:38,162 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 24 error locations. [2020-10-20 05:53:38,178 INFO L253 AbstractCegarLoop]: Starting to check reachability of 24 error locations. [2020-10-20 05:53:38,198 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 05:53:38,198 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-20 05:53:38,199 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 05:53:38,199 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 05:53:38,199 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 05:53:38,199 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 05:53:38,199 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 05:53:38,200 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 05:53:38,220 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states. [2020-10-20 05:53:38,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-20 05:53:38,232 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:53:38,234 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:53:38,234 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, alloc_dataErr3REQUIRES_VIOLATION, alloc_dataErr2REQUIRES_VIOLATION, alloc_dataErr1REQUIRES_VIOLATION, alloc_dataErr0REQUIRES_VIOLATION, free_dataErr7REQUIRES_VIOLATION, free_dataErr8ASSERT_VIOLATIONMEMORY_FREE, free_dataErr6REQUIRES_VIOLATION, free_dataErr9ASSERT_VIOLATIONMEMORY_FREE, free_dataErr5REQUIRES_VIOLATION, free_dataErr1REQUIRES_VIOLATION, free_dataErr0REQUIRES_VIOLATION, free_dataErr4REQUIRES_VIOLATION, free_dataErr10ASSERT_VIOLATIONMEMORY_FREE, free_dataErr3REQUIRES_VIOLATION, free_dataErr11ASSERT_VIOLATIONMEMORY_FREE, free_dataErr13ASSERT_VIOLATIONMEMORY_FREE, free_dataErr2REQUIRES_VIOLATION, free_dataErr12ASSERT_VIOLATIONMEMORY_FREE]=== [2020-10-20 05:53:38,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:53:38,242 INFO L82 PathProgramCache]: Analyzing trace with hash -754071983, now seen corresponding path program 1 times [2020-10-20 05:53:38,253 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:53:38,254 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010778567] [2020-10-20 05:53:38,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:53:38,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:53:38,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 05:53:38,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:53:38,692 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 05:53:38,694 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010778567] [2020-10-20 05:53:38,695 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 05:53:38,696 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-20 05:53:38,697 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485424347] [2020-10-20 05:53:38,704 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-20 05:53:38,704 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 05:53:38,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-20 05:53:38,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-20 05:53:38,729 INFO L87 Difference]: Start difference. First operand 60 states. Second operand 6 states. [2020-10-20 05:53:39,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:53:39,095 INFO L93 Difference]: Finished difference Result 55 states and 55 transitions. [2020-10-20 05:53:39,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-20 05:53:39,108 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 9 [2020-10-20 05:53:39,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:53:39,123 INFO L225 Difference]: With dead ends: 55 [2020-10-20 05:53:39,123 INFO L226 Difference]: Without dead ends: 52 [2020-10-20 05:53:39,125 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-20 05:53:39,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-20 05:53:39,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2020-10-20 05:53:39,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-20 05:53:39,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 52 transitions. [2020-10-20 05:53:39,176 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 52 transitions. Word has length 9 [2020-10-20 05:53:39,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:53:39,177 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 52 transitions. [2020-10-20 05:53:39,178 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-20 05:53:39,178 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 52 transitions. [2020-10-20 05:53:39,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-20 05:53:39,179 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:53:39,179 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:53:39,180 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 05:53:39,180 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, alloc_dataErr3REQUIRES_VIOLATION, alloc_dataErr2REQUIRES_VIOLATION, alloc_dataErr1REQUIRES_VIOLATION, alloc_dataErr0REQUIRES_VIOLATION, free_dataErr7REQUIRES_VIOLATION, free_dataErr8ASSERT_VIOLATIONMEMORY_FREE, free_dataErr6REQUIRES_VIOLATION, free_dataErr9ASSERT_VIOLATIONMEMORY_FREE, free_dataErr5REQUIRES_VIOLATION, free_dataErr1REQUIRES_VIOLATION, free_dataErr0REQUIRES_VIOLATION, free_dataErr4REQUIRES_VIOLATION, free_dataErr10ASSERT_VIOLATIONMEMORY_FREE, free_dataErr3REQUIRES_VIOLATION, free_dataErr11ASSERT_VIOLATIONMEMORY_FREE, free_dataErr13ASSERT_VIOLATIONMEMORY_FREE, free_dataErr2REQUIRES_VIOLATION, free_dataErr12ASSERT_VIOLATIONMEMORY_FREE]=== [2020-10-20 05:53:39,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:53:39,181 INFO L82 PathProgramCache]: Analyzing trace with hash -754071984, now seen corresponding path program 1 times [2020-10-20 05:53:39,181 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:53:39,182 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82689492] [2020-10-20 05:53:39,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:53:39,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:53:39,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 05:53:39,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:53:39,303 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 05:53:39,306 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82689492] [2020-10-20 05:53:39,306 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 05:53:39,307 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-20 05:53:39,307 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888727451] [2020-10-20 05:53:39,309 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-20 05:53:39,310 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 05:53:39,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-20 05:53:39,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-20 05:53:39,312 INFO L87 Difference]: Start difference. First operand 52 states and 52 transitions. Second operand 6 states. [2020-10-20 05:53:39,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:53:39,561 INFO L93 Difference]: Finished difference Result 50 states and 50 transitions. [2020-10-20 05:53:39,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 05:53:39,562 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 9 [2020-10-20 05:53:39,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:53:39,564 INFO L225 Difference]: With dead ends: 50 [2020-10-20 05:53:39,564 INFO L226 Difference]: Without dead ends: 50 [2020-10-20 05:53:39,566 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-20 05:53:39,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-20 05:53:39,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2020-10-20 05:53:39,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-20 05:53:39,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 50 transitions. [2020-10-20 05:53:39,579 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 50 transitions. Word has length 9 [2020-10-20 05:53:39,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:53:39,580 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 50 transitions. [2020-10-20 05:53:39,580 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-20 05:53:39,580 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 50 transitions. [2020-10-20 05:53:39,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-20 05:53:39,581 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:53:39,582 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:53:39,582 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-20 05:53:39,583 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, alloc_dataErr3REQUIRES_VIOLATION, alloc_dataErr2REQUIRES_VIOLATION, alloc_dataErr1REQUIRES_VIOLATION, alloc_dataErr0REQUIRES_VIOLATION, free_dataErr7REQUIRES_VIOLATION, free_dataErr8ASSERT_VIOLATIONMEMORY_FREE, free_dataErr6REQUIRES_VIOLATION, free_dataErr9ASSERT_VIOLATIONMEMORY_FREE, free_dataErr5REQUIRES_VIOLATION, free_dataErr1REQUIRES_VIOLATION, free_dataErr0REQUIRES_VIOLATION, free_dataErr4REQUIRES_VIOLATION, free_dataErr10ASSERT_VIOLATIONMEMORY_FREE, free_dataErr3REQUIRES_VIOLATION, free_dataErr11ASSERT_VIOLATIONMEMORY_FREE, free_dataErr13ASSERT_VIOLATIONMEMORY_FREE, free_dataErr2REQUIRES_VIOLATION, free_dataErr12ASSERT_VIOLATIONMEMORY_FREE]=== [2020-10-20 05:53:39,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:53:39,584 INFO L82 PathProgramCache]: Analyzing trace with hash 1186296498, now seen corresponding path program 1 times [2020-10-20 05:53:39,584 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:53:39,585 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752479779] [2020-10-20 05:53:39,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:53:39,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:53:39,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 05:53:39,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:53:39,800 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 05:53:39,801 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752479779] [2020-10-20 05:53:39,801 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 05:53:39,801 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-20 05:53:39,802 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760662353] [2020-10-20 05:53:39,802 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-20 05:53:39,802 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 05:53:39,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-20 05:53:39,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-20 05:53:39,803 INFO L87 Difference]: Start difference. First operand 50 states and 50 transitions. Second operand 7 states. [2020-10-20 05:53:40,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:53:40,034 INFO L93 Difference]: Finished difference Result 49 states and 49 transitions. [2020-10-20 05:53:40,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 05:53:40,035 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 11 [2020-10-20 05:53:40,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:53:40,037 INFO L225 Difference]: With dead ends: 49 [2020-10-20 05:53:40,037 INFO L226 Difference]: Without dead ends: 49 [2020-10-20 05:53:40,037 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-20 05:53:40,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-10-20 05:53:40,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2020-10-20 05:53:40,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-20 05:53:40,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 49 transitions. [2020-10-20 05:53:40,045 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 49 transitions. Word has length 11 [2020-10-20 05:53:40,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:53:40,046 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 49 transitions. [2020-10-20 05:53:40,046 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-20 05:53:40,046 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 49 transitions. [2020-10-20 05:53:40,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-20 05:53:40,047 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:53:40,047 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:53:40,047 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-20 05:53:40,048 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, alloc_dataErr3REQUIRES_VIOLATION, alloc_dataErr2REQUIRES_VIOLATION, alloc_dataErr1REQUIRES_VIOLATION, alloc_dataErr0REQUIRES_VIOLATION, free_dataErr7REQUIRES_VIOLATION, free_dataErr8ASSERT_VIOLATIONMEMORY_FREE, free_dataErr6REQUIRES_VIOLATION, free_dataErr9ASSERT_VIOLATIONMEMORY_FREE, free_dataErr5REQUIRES_VIOLATION, free_dataErr1REQUIRES_VIOLATION, free_dataErr0REQUIRES_VIOLATION, free_dataErr4REQUIRES_VIOLATION, free_dataErr10ASSERT_VIOLATIONMEMORY_FREE, free_dataErr3REQUIRES_VIOLATION, free_dataErr11ASSERT_VIOLATIONMEMORY_FREE, free_dataErr13ASSERT_VIOLATIONMEMORY_FREE, free_dataErr2REQUIRES_VIOLATION, free_dataErr12ASSERT_VIOLATIONMEMORY_FREE]=== [2020-10-20 05:53:40,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:53:40,049 INFO L82 PathProgramCache]: Analyzing trace with hash -1880316875, now seen corresponding path program 1 times [2020-10-20 05:53:40,049 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:53:40,049 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004435693] [2020-10-20 05:53:40,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:53:40,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:53:40,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 05:53:40,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:53:40,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-20 05:53:40,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:53:40,172 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 05:53:40,173 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004435693] [2020-10-20 05:53:40,173 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 05:53:40,173 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 05:53:40,174 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887269461] [2020-10-20 05:53:40,174 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 05:53:40,175 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 05:53:40,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 05:53:40,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 05:53:40,176 INFO L87 Difference]: Start difference. First operand 49 states and 49 transitions. Second operand 5 states. [2020-10-20 05:53:40,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:53:40,343 INFO L93 Difference]: Finished difference Result 45 states and 45 transitions. [2020-10-20 05:53:40,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 05:53:40,343 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-10-20 05:53:40,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:53:40,345 INFO L225 Difference]: With dead ends: 45 [2020-10-20 05:53:40,345 INFO L226 Difference]: Without dead ends: 45 [2020-10-20 05:53:40,345 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-20 05:53:40,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-10-20 05:53:40,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-10-20 05:53:40,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-20 05:53:40,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 45 transitions. [2020-10-20 05:53:40,351 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 45 transitions. Word has length 18 [2020-10-20 05:53:40,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:53:40,351 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 45 transitions. [2020-10-20 05:53:40,352 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 05:53:40,352 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 45 transitions. [2020-10-20 05:53:40,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-20 05:53:40,352 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:53:40,353 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:53:40,353 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-20 05:53:40,353 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, alloc_dataErr3REQUIRES_VIOLATION, alloc_dataErr2REQUIRES_VIOLATION, alloc_dataErr1REQUIRES_VIOLATION, alloc_dataErr0REQUIRES_VIOLATION, free_dataErr7REQUIRES_VIOLATION, free_dataErr8ASSERT_VIOLATIONMEMORY_FREE, free_dataErr6REQUIRES_VIOLATION, free_dataErr9ASSERT_VIOLATIONMEMORY_FREE, free_dataErr5REQUIRES_VIOLATION, free_dataErr1REQUIRES_VIOLATION, free_dataErr0REQUIRES_VIOLATION, free_dataErr4REQUIRES_VIOLATION, free_dataErr10ASSERT_VIOLATIONMEMORY_FREE, free_dataErr3REQUIRES_VIOLATION, free_dataErr11ASSERT_VIOLATIONMEMORY_FREE, free_dataErr13ASSERT_VIOLATIONMEMORY_FREE, free_dataErr2REQUIRES_VIOLATION, free_dataErr12ASSERT_VIOLATIONMEMORY_FREE]=== [2020-10-20 05:53:40,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:53:40,354 INFO L82 PathProgramCache]: Analyzing trace with hash -1880316874, now seen corresponding path program 1 times [2020-10-20 05:53:40,354 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:53:40,354 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444490663] [2020-10-20 05:53:40,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:53:40,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:53:40,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 05:53:40,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:53:40,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-20 05:53:40,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:53:40,534 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 05:53:40,538 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444490663] [2020-10-20 05:53:40,539 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 05:53:40,539 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 05:53:40,540 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662196297] [2020-10-20 05:53:40,541 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 05:53:40,542 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 05:53:40,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 05:53:40,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 05:53:40,544 INFO L87 Difference]: Start difference. First operand 45 states and 45 transitions. Second operand 5 states. [2020-10-20 05:53:40,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:53:40,713 INFO L93 Difference]: Finished difference Result 41 states and 41 transitions. [2020-10-20 05:53:40,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 05:53:40,714 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-10-20 05:53:40,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:53:40,715 INFO L225 Difference]: With dead ends: 41 [2020-10-20 05:53:40,715 INFO L226 Difference]: Without dead ends: 41 [2020-10-20 05:53:40,715 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-20 05:53:40,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-10-20 05:53:40,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2020-10-20 05:53:40,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-20 05:53:40,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 41 transitions. [2020-10-20 05:53:40,721 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 41 transitions. Word has length 18 [2020-10-20 05:53:40,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:53:40,721 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 41 transitions. [2020-10-20 05:53:40,721 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 05:53:40,721 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 41 transitions. [2020-10-20 05:53:40,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-20 05:53:40,722 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:53:40,722 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, 1, 1] [2020-10-20 05:53:40,723 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-20 05:53:40,723 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, alloc_dataErr3REQUIRES_VIOLATION, alloc_dataErr2REQUIRES_VIOLATION, alloc_dataErr1REQUIRES_VIOLATION, alloc_dataErr0REQUIRES_VIOLATION, free_dataErr7REQUIRES_VIOLATION, free_dataErr8ASSERT_VIOLATIONMEMORY_FREE, free_dataErr6REQUIRES_VIOLATION, free_dataErr9ASSERT_VIOLATIONMEMORY_FREE, free_dataErr5REQUIRES_VIOLATION, free_dataErr1REQUIRES_VIOLATION, free_dataErr0REQUIRES_VIOLATION, free_dataErr4REQUIRES_VIOLATION, free_dataErr10ASSERT_VIOLATIONMEMORY_FREE, free_dataErr3REQUIRES_VIOLATION, free_dataErr11ASSERT_VIOLATIONMEMORY_FREE, free_dataErr13ASSERT_VIOLATIONMEMORY_FREE, free_dataErr2REQUIRES_VIOLATION, free_dataErr12ASSERT_VIOLATIONMEMORY_FREE]=== [2020-10-20 05:53:40,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:53:40,724 INFO L82 PathProgramCache]: Analyzing trace with hash 1180384893, now seen corresponding path program 1 times [2020-10-20 05:53:40,724 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:53:40,724 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884298208] [2020-10-20 05:53:40,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:53:40,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:53:40,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 05:53:40,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:53:40,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-20 05:53:40,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:53:40,947 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 05:53:40,948 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884298208] [2020-10-20 05:53:40,948 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 05:53:40,948 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-20 05:53:40,948 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449751145] [2020-10-20 05:53:40,949 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-20 05:53:40,949 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 05:53:40,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-20 05:53:40,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2020-10-20 05:53:40,950 INFO L87 Difference]: Start difference. First operand 41 states and 41 transitions. Second operand 13 states. [2020-10-20 05:53:41,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:53:41,357 INFO L93 Difference]: Finished difference Result 40 states and 40 transitions. [2020-10-20 05:53:41,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-20 05:53:41,360 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 25 [2020-10-20 05:53:41,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:53:41,361 INFO L225 Difference]: With dead ends: 40 [2020-10-20 05:53:41,362 INFO L226 Difference]: Without dead ends: 40 [2020-10-20 05:53:41,362 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=64, Invalid=356, Unknown=0, NotChecked=0, Total=420 [2020-10-20 05:53:41,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-10-20 05:53:41,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2020-10-20 05:53:41,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-20 05:53:41,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 40 transitions. [2020-10-20 05:53:41,378 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 40 transitions. Word has length 25 [2020-10-20 05:53:41,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:53:41,378 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 40 transitions. [2020-10-20 05:53:41,378 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-20 05:53:41,378 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 40 transitions. [2020-10-20 05:53:41,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-20 05:53:41,379 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:53:41,379 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, 1, 1, 1] [2020-10-20 05:53:41,380 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-20 05:53:41,380 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, alloc_dataErr3REQUIRES_VIOLATION, alloc_dataErr2REQUIRES_VIOLATION, alloc_dataErr1REQUIRES_VIOLATION, alloc_dataErr0REQUIRES_VIOLATION, free_dataErr7REQUIRES_VIOLATION, free_dataErr8ASSERT_VIOLATIONMEMORY_FREE, free_dataErr6REQUIRES_VIOLATION, free_dataErr9ASSERT_VIOLATIONMEMORY_FREE, free_dataErr5REQUIRES_VIOLATION, free_dataErr1REQUIRES_VIOLATION, free_dataErr0REQUIRES_VIOLATION, free_dataErr4REQUIRES_VIOLATION, free_dataErr10ASSERT_VIOLATIONMEMORY_FREE, free_dataErr3REQUIRES_VIOLATION, free_dataErr11ASSERT_VIOLATIONMEMORY_FREE, free_dataErr13ASSERT_VIOLATIONMEMORY_FREE, free_dataErr2REQUIRES_VIOLATION, free_dataErr12ASSERT_VIOLATIONMEMORY_FREE]=== [2020-10-20 05:53:41,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:53:41,380 INFO L82 PathProgramCache]: Analyzing trace with hash -2062773891, now seen corresponding path program 1 times [2020-10-20 05:53:41,381 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:53:41,381 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591442952] [2020-10-20 05:53:41,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:53:41,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:53:41,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 05:53:41,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:53:41,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-20 05:53:41,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:53:41,605 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 05:53:41,605 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591442952] [2020-10-20 05:53:41,605 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 05:53:41,606 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-20 05:53:41,606 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560055923] [2020-10-20 05:53:41,606 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-20 05:53:41,606 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 05:53:41,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-20 05:53:41,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2020-10-20 05:53:41,607 INFO L87 Difference]: Start difference. First operand 40 states and 40 transitions. Second operand 13 states. [2020-10-20 05:53:42,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:53:42,112 INFO L93 Difference]: Finished difference Result 39 states and 39 transitions. [2020-10-20 05:53:42,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-20 05:53:42,113 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 26 [2020-10-20 05:53:42,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:53:42,114 INFO L225 Difference]: With dead ends: 39 [2020-10-20 05:53:42,114 INFO L226 Difference]: Without dead ends: 39 [2020-10-20 05:53:42,114 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=64, Invalid=356, Unknown=0, NotChecked=0, Total=420 [2020-10-20 05:53:42,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-10-20 05:53:42,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2020-10-20 05:53:42,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-20 05:53:42,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 39 transitions. [2020-10-20 05:53:42,122 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 39 transitions. Word has length 26 [2020-10-20 05:53:42,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:53:42,123 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 39 transitions. [2020-10-20 05:53:42,123 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-20 05:53:42,123 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 39 transitions. [2020-10-20 05:53:42,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-20 05:53:42,124 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:53:42,124 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, 1, 1, 1, 1] [2020-10-20 05:53:42,124 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-20 05:53:42,124 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, alloc_dataErr3REQUIRES_VIOLATION, alloc_dataErr2REQUIRES_VIOLATION, alloc_dataErr1REQUIRES_VIOLATION, alloc_dataErr0REQUIRES_VIOLATION, free_dataErr7REQUIRES_VIOLATION, free_dataErr8ASSERT_VIOLATIONMEMORY_FREE, free_dataErr6REQUIRES_VIOLATION, free_dataErr9ASSERT_VIOLATIONMEMORY_FREE, free_dataErr5REQUIRES_VIOLATION, free_dataErr1REQUIRES_VIOLATION, free_dataErr0REQUIRES_VIOLATION, free_dataErr4REQUIRES_VIOLATION, free_dataErr10ASSERT_VIOLATIONMEMORY_FREE, free_dataErr3REQUIRES_VIOLATION, free_dataErr11ASSERT_VIOLATIONMEMORY_FREE, free_dataErr13ASSERT_VIOLATIONMEMORY_FREE, free_dataErr2REQUIRES_VIOLATION, free_dataErr12ASSERT_VIOLATIONMEMORY_FREE]=== [2020-10-20 05:53:42,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:53:42,125 INFO L82 PathProgramCache]: Analyzing trace with hash 478518911, now seen corresponding path program 1 times [2020-10-20 05:53:42,125 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:53:42,125 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093362135] [2020-10-20 05:53:42,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:53:42,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:53:42,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 05:53:42,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:53:42,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-20 05:53:42,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:53:42,370 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 05:53:42,371 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093362135] [2020-10-20 05:53:42,371 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 05:53:42,371 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-20 05:53:42,371 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028630016] [2020-10-20 05:53:42,372 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-20 05:53:42,372 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 05:53:42,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-20 05:53:42,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2020-10-20 05:53:42,373 INFO L87 Difference]: Start difference. First operand 39 states and 39 transitions. Second operand 14 states. [2020-10-20 05:53:42,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:53:42,760 INFO L93 Difference]: Finished difference Result 38 states and 38 transitions. [2020-10-20 05:53:42,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-20 05:53:42,761 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 27 [2020-10-20 05:53:42,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:53:42,762 INFO L225 Difference]: With dead ends: 38 [2020-10-20 05:53:42,763 INFO L226 Difference]: Without dead ends: 38 [2020-10-20 05:53:42,763 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=354, Unknown=0, NotChecked=0, Total=420 [2020-10-20 05:53:42,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-20 05:53:42,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-10-20 05:53:42,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-20 05:53:42,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 38 transitions. [2020-10-20 05:53:42,768 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 38 transitions. Word has length 27 [2020-10-20 05:53:42,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:53:42,768 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 38 transitions. [2020-10-20 05:53:42,768 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-20 05:53:42,768 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 38 transitions. [2020-10-20 05:53:42,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-20 05:53:42,769 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:53:42,769 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, 1, 1, 1, 1, 1] [2020-10-20 05:53:42,769 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-20 05:53:42,770 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, alloc_dataErr3REQUIRES_VIOLATION, alloc_dataErr2REQUIRES_VIOLATION, alloc_dataErr1REQUIRES_VIOLATION, alloc_dataErr0REQUIRES_VIOLATION, free_dataErr7REQUIRES_VIOLATION, free_dataErr8ASSERT_VIOLATIONMEMORY_FREE, free_dataErr6REQUIRES_VIOLATION, free_dataErr9ASSERT_VIOLATIONMEMORY_FREE, free_dataErr5REQUIRES_VIOLATION, free_dataErr1REQUIRES_VIOLATION, free_dataErr0REQUIRES_VIOLATION, free_dataErr4REQUIRES_VIOLATION, free_dataErr10ASSERT_VIOLATIONMEMORY_FREE, free_dataErr3REQUIRES_VIOLATION, free_dataErr11ASSERT_VIOLATIONMEMORY_FREE, free_dataErr13ASSERT_VIOLATIONMEMORY_FREE, free_dataErr2REQUIRES_VIOLATION, free_dataErr12ASSERT_VIOLATIONMEMORY_FREE]=== [2020-10-20 05:53:42,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:53:42,770 INFO L82 PathProgramCache]: Analyzing trace with hash 1948606696, now seen corresponding path program 1 times [2020-10-20 05:53:42,771 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:53:42,771 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739854199] [2020-10-20 05:53:42,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:53:42,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:53:42,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 05:53:42,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:53:42,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-20 05:53:42,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:53:42,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-20 05:53:42,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:53:43,151 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 05:53:43,152 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739854199] [2020-10-20 05:53:43,152 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 05:53:43,152 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2020-10-20 05:53:43,152 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672604773] [2020-10-20 05:53:43,153 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-20 05:53:43,153 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 05:53:43,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-20 05:53:43,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=304, Unknown=0, NotChecked=0, Total=342 [2020-10-20 05:53:43,156 INFO L87 Difference]: Start difference. First operand 38 states and 38 transitions. Second operand 19 states. [2020-10-20 05:53:43,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:53:43,744 INFO L93 Difference]: Finished difference Result 40 states and 39 transitions. [2020-10-20 05:53:43,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-20 05:53:43,752 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 28 [2020-10-20 05:53:43,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:53:43,753 INFO L225 Difference]: With dead ends: 40 [2020-10-20 05:53:43,753 INFO L226 Difference]: Without dead ends: 38 [2020-10-20 05:53:43,754 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=105, Invalid=825, Unknown=0, NotChecked=0, Total=930 [2020-10-20 05:53:43,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-20 05:53:43,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-10-20 05:53:43,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-20 05:53:43,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 37 transitions. [2020-10-20 05:53:43,760 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 37 transitions. Word has length 28 [2020-10-20 05:53:43,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:53:43,761 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 37 transitions. [2020-10-20 05:53:43,761 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-20 05:53:43,761 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 37 transitions. [2020-10-20 05:53:43,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-20 05:53:43,762 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:53:43,763 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, 1, 1, 1, 1, 1] [2020-10-20 05:53:43,763 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-20 05:53:43,763 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, alloc_dataErr3REQUIRES_VIOLATION, alloc_dataErr2REQUIRES_VIOLATION, alloc_dataErr1REQUIRES_VIOLATION, alloc_dataErr0REQUIRES_VIOLATION, free_dataErr7REQUIRES_VIOLATION, free_dataErr8ASSERT_VIOLATIONMEMORY_FREE, free_dataErr6REQUIRES_VIOLATION, free_dataErr9ASSERT_VIOLATIONMEMORY_FREE, free_dataErr5REQUIRES_VIOLATION, free_dataErr1REQUIRES_VIOLATION, free_dataErr0REQUIRES_VIOLATION, free_dataErr4REQUIRES_VIOLATION, free_dataErr10ASSERT_VIOLATIONMEMORY_FREE, free_dataErr3REQUIRES_VIOLATION, free_dataErr11ASSERT_VIOLATIONMEMORY_FREE, free_dataErr13ASSERT_VIOLATIONMEMORY_FREE, free_dataErr2REQUIRES_VIOLATION, free_dataErr12ASSERT_VIOLATIONMEMORY_FREE]=== [2020-10-20 05:53:43,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:53:43,764 INFO L82 PathProgramCache]: Analyzing trace with hash 1949184447, now seen corresponding path program 1 times [2020-10-20 05:53:43,764 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:53:43,764 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962065773] [2020-10-20 05:53:43,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:53:43,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:53:43,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 05:53:43,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:53:43,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-20 05:53:43,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:53:43,971 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 05:53:43,972 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962065773] [2020-10-20 05:53:43,972 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 05:53:43,972 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-20 05:53:43,972 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272421452] [2020-10-20 05:53:43,973 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-20 05:53:43,973 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 05:53:43,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-20 05:53:43,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2020-10-20 05:53:43,974 INFO L87 Difference]: Start difference. First operand 38 states and 37 transitions. Second operand 14 states. [2020-10-20 05:53:44,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:53:44,294 INFO L93 Difference]: Finished difference Result 37 states and 36 transitions. [2020-10-20 05:53:44,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-20 05:53:44,294 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 28 [2020-10-20 05:53:44,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:53:44,295 INFO L225 Difference]: With dead ends: 37 [2020-10-20 05:53:44,295 INFO L226 Difference]: Without dead ends: 37 [2020-10-20 05:53:44,296 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=433, Unknown=0, NotChecked=0, Total=506 [2020-10-20 05:53:44,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-10-20 05:53:44,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-10-20 05:53:44,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-20 05:53:44,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 36 transitions. [2020-10-20 05:53:44,301 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 36 transitions. Word has length 28 [2020-10-20 05:53:44,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:53:44,301 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 36 transitions. [2020-10-20 05:53:44,301 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-20 05:53:44,302 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 36 transitions. [2020-10-20 05:53:44,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-20 05:53:44,303 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:53:44,303 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, 1, 1, 1, 1, 1, 1] [2020-10-20 05:53:44,303 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-20 05:53:44,303 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, alloc_dataErr3REQUIRES_VIOLATION, alloc_dataErr2REQUIRES_VIOLATION, alloc_dataErr1REQUIRES_VIOLATION, alloc_dataErr0REQUIRES_VIOLATION, free_dataErr7REQUIRES_VIOLATION, free_dataErr8ASSERT_VIOLATIONMEMORY_FREE, free_dataErr6REQUIRES_VIOLATION, free_dataErr9ASSERT_VIOLATIONMEMORY_FREE, free_dataErr5REQUIRES_VIOLATION, free_dataErr1REQUIRES_VIOLATION, free_dataErr0REQUIRES_VIOLATION, free_dataErr4REQUIRES_VIOLATION, free_dataErr10ASSERT_VIOLATIONMEMORY_FREE, free_dataErr3REQUIRES_VIOLATION, free_dataErr11ASSERT_VIOLATIONMEMORY_FREE, free_dataErr13ASSERT_VIOLATIONMEMORY_FREE, free_dataErr2REQUIRES_VIOLATION, free_dataErr12ASSERT_VIOLATIONMEMORY_FREE]=== [2020-10-20 05:53:44,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:53:44,304 INFO L82 PathProgramCache]: Analyzing trace with hash 295175809, now seen corresponding path program 1 times [2020-10-20 05:53:44,304 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:53:44,305 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435369744] [2020-10-20 05:53:44,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:53:44,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:53:44,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 05:53:44,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:53:44,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-20 05:53:44,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:53:44,550 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 05:53:44,551 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435369744] [2020-10-20 05:53:44,551 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 05:53:44,551 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-20 05:53:44,552 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624315612] [2020-10-20 05:53:44,552 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-20 05:53:44,553 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 05:53:44,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-20 05:53:44,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2020-10-20 05:53:44,554 INFO L87 Difference]: Start difference. First operand 37 states and 36 transitions. Second operand 14 states. [2020-10-20 05:53:44,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:53:44,908 INFO L93 Difference]: Finished difference Result 36 states and 35 transitions. [2020-10-20 05:53:44,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-20 05:53:44,909 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 29 [2020-10-20 05:53:44,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:53:44,910 INFO L225 Difference]: With dead ends: 36 [2020-10-20 05:53:44,910 INFO L226 Difference]: Without dead ends: 36 [2020-10-20 05:53:44,911 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=433, Unknown=0, NotChecked=0, Total=506 [2020-10-20 05:53:44,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-20 05:53:44,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-10-20 05:53:44,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-20 05:53:44,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 35 transitions. [2020-10-20 05:53:44,914 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 35 transitions. Word has length 29 [2020-10-20 05:53:44,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:53:44,915 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 35 transitions. [2020-10-20 05:53:44,915 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-20 05:53:44,915 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 35 transitions. [2020-10-20 05:53:44,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-20 05:53:44,916 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:53:44,916 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, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:53:44,916 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-20 05:53:44,917 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, alloc_dataErr3REQUIRES_VIOLATION, alloc_dataErr2REQUIRES_VIOLATION, alloc_dataErr1REQUIRES_VIOLATION, alloc_dataErr0REQUIRES_VIOLATION, free_dataErr7REQUIRES_VIOLATION, free_dataErr8ASSERT_VIOLATIONMEMORY_FREE, free_dataErr6REQUIRES_VIOLATION, free_dataErr9ASSERT_VIOLATIONMEMORY_FREE, free_dataErr5REQUIRES_VIOLATION, free_dataErr1REQUIRES_VIOLATION, free_dataErr0REQUIRES_VIOLATION, free_dataErr4REQUIRES_VIOLATION, free_dataErr10ASSERT_VIOLATIONMEMORY_FREE, free_dataErr3REQUIRES_VIOLATION, free_dataErr11ASSERT_VIOLATIONMEMORY_FREE, free_dataErr13ASSERT_VIOLATIONMEMORY_FREE, free_dataErr2REQUIRES_VIOLATION, free_dataErr12ASSERT_VIOLATIONMEMORY_FREE]=== [2020-10-20 05:53:44,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:53:44,917 INFO L82 PathProgramCache]: Analyzing trace with hash 560515585, now seen corresponding path program 1 times [2020-10-20 05:53:44,917 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:53:44,918 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179085517] [2020-10-20 05:53:44,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:53:44,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:53:45,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 05:53:45,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:53:45,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-20 05:53:45,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:53:45,405 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 05:53:45,405 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179085517] [2020-10-20 05:53:45,405 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 05:53:45,406 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2020-10-20 05:53:45,406 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322409110] [2020-10-20 05:53:45,406 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-20 05:53:45,406 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 05:53:45,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-20 05:53:45,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=414, Unknown=0, NotChecked=0, Total=462 [2020-10-20 05:53:45,407 INFO L87 Difference]: Start difference. First operand 36 states and 35 transitions. Second operand 22 states. [2020-10-20 05:53:46,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:53:46,132 INFO L93 Difference]: Finished difference Result 35 states and 34 transitions. [2020-10-20 05:53:46,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-20 05:53:46,132 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 30 [2020-10-20 05:53:46,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:53:46,134 INFO L225 Difference]: With dead ends: 35 [2020-10-20 05:53:46,134 INFO L226 Difference]: Without dead ends: 35 [2020-10-20 05:53:46,135 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=156, Invalid=1176, Unknown=0, NotChecked=0, Total=1332 [2020-10-20 05:53:46,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-10-20 05:53:46,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-10-20 05:53:46,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-20 05:53:46,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 34 transitions. [2020-10-20 05:53:46,139 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 34 transitions. Word has length 30 [2020-10-20 05:53:46,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:53:46,139 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 34 transitions. [2020-10-20 05:53:46,140 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-20 05:53:46,140 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 34 transitions. [2020-10-20 05:53:46,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-20 05:53:46,141 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:53:46,141 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:53:46,141 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-20 05:53:46,142 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, alloc_dataErr3REQUIRES_VIOLATION, alloc_dataErr2REQUIRES_VIOLATION, alloc_dataErr1REQUIRES_VIOLATION, alloc_dataErr0REQUIRES_VIOLATION, free_dataErr7REQUIRES_VIOLATION, free_dataErr8ASSERT_VIOLATIONMEMORY_FREE, free_dataErr6REQUIRES_VIOLATION, free_dataErr9ASSERT_VIOLATIONMEMORY_FREE, free_dataErr5REQUIRES_VIOLATION, free_dataErr1REQUIRES_VIOLATION, free_dataErr0REQUIRES_VIOLATION, free_dataErr4REQUIRES_VIOLATION, free_dataErr10ASSERT_VIOLATIONMEMORY_FREE, free_dataErr3REQUIRES_VIOLATION, free_dataErr11ASSERT_VIOLATIONMEMORY_FREE, free_dataErr13ASSERT_VIOLATIONMEMORY_FREE, free_dataErr2REQUIRES_VIOLATION, free_dataErr12ASSERT_VIOLATIONMEMORY_FREE]=== [2020-10-20 05:53:46,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:53:46,142 INFO L82 PathProgramCache]: Analyzing trace with hash 1278248495, now seen corresponding path program 1 times [2020-10-20 05:53:46,142 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:53:46,143 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913104556] [2020-10-20 05:53:46,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:53:46,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:53:46,405 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 35 [2020-10-20 05:53:46,572 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 33 [2020-10-20 05:53:46,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 05:53:46,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:53:46,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-20 05:53:46,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:53:47,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-20 05:53:47,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:53:48,673 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 05:53:48,674 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913104556] [2020-10-20 05:53:48,674 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 05:53:48,675 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2020-10-20 05:53:48,675 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705782021] [2020-10-20 05:53:48,677 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-20 05:53:48,678 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 05:53:48,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-20 05:53:48,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=692, Unknown=0, NotChecked=0, Total=756 [2020-10-20 05:53:48,680 INFO L87 Difference]: Start difference. First operand 35 states and 34 transitions. Second operand 28 states. [2020-10-20 05:53:49,177 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 57 [2020-10-20 05:53:50,284 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 46 [2020-10-20 05:53:50,476 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 51 [2020-10-20 05:53:50,641 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 53 [2020-10-20 05:53:50,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:53:50,917 INFO L93 Difference]: Finished difference Result 34 states and 33 transitions. [2020-10-20 05:53:50,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-20 05:53:50,918 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 34 [2020-10-20 05:53:50,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:53:50,918 INFO L225 Difference]: With dead ends: 34 [2020-10-20 05:53:50,919 INFO L226 Difference]: Without dead ends: 0 [2020-10-20 05:53:50,920 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 293 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=186, Invalid=1706, Unknown=0, NotChecked=0, Total=1892 [2020-10-20 05:53:50,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-20 05:53:50,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-20 05:53:50,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-20 05:53:50,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-20 05:53:50,920 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 34 [2020-10-20 05:53:50,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:53:50,921 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 05:53:50,921 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-20 05:53:50,921 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-20 05:53:50,921 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-20 05:53:50,922 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-20 05:53:50,928 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 05:53:50 BoogieIcfgContainer [2020-10-20 05:53:50,928 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 05:53:50,929 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 05:53:50,929 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 05:53:50,929 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 05:53:50,930 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 05:53:38" (3/4) ... [2020-10-20 05:53:50,934 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-20 05:53:50,940 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure reach_error [2020-10-20 05:53:50,941 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2020-10-20 05:53:50,941 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_32 [2020-10-20 05:53:50,941 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_64 [2020-10-20 05:53:50,941 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint16_identity [2020-10-20 05:53:50,941 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint64_identity [2020-10-20 05:53:50,942 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure alloc_data [2020-10-20 05:53:50,942 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2020-10-20 05:53:50,942 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint32_identity [2020-10-20 05:53:50,942 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure free_data [2020-10-20 05:53:50,947 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2020-10-20 05:53:50,948 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2020-10-20 05:53:50,948 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-10-20 05:53:50,949 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-20 05:53:50,998 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-20 05:53:50,999 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 05:53:51,004 INFO L168 Benchmark]: Toolchain (without parser) took 14146.37 ms. Allocated memory was 39.3 MB in the beginning and 102.2 MB in the end (delta: 62.9 MB). Free memory was 21.4 MB in the beginning and 42.3 MB in the end (delta: -20.9 MB). Peak memory consumption was 42.0 MB. Max. memory is 14.3 GB. [2020-10-20 05:53:51,005 INFO L168 Benchmark]: CDTParser took 0.50 ms. Allocated memory is still 29.9 MB. Free memory was 15.0 MB in the beginning and 15.0 MB in the end (delta: 38.7 kB). Peak memory consumption was 38.7 kB. Max. memory is 14.3 GB. [2020-10-20 05:53:51,006 INFO L168 Benchmark]: CACSL2BoogieTranslator took 465.92 ms. Allocated memory was 39.3 MB in the beginning and 41.9 MB in the end (delta: 2.6 MB). Free memory was 20.4 MB in the beginning and 13.1 MB in the end (delta: 7.3 MB). Peak memory consumption was 12.0 MB. Max. memory is 14.3 GB. [2020-10-20 05:53:51,007 INFO L168 Benchmark]: Boogie Preprocessor took 64.73 ms. Allocated memory is still 41.9 MB. Free memory was 13.1 MB in the beginning and 10.3 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 14.3 GB. [2020-10-20 05:53:51,008 INFO L168 Benchmark]: RCFGBuilder took 736.91 ms. Allocated memory was 41.9 MB in the beginning and 46.1 MB in the end (delta: 4.2 MB). Free memory was 10.3 MB in the beginning and 25.6 MB in the end (delta: -15.2 MB). Peak memory consumption was 3.5 MB. Max. memory is 14.3 GB. [2020-10-20 05:53:51,011 INFO L168 Benchmark]: TraceAbstraction took 12797.98 ms. Allocated memory was 46.1 MB in the beginning and 102.2 MB in the end (delta: 56.1 MB). Free memory was 24.9 MB in the beginning and 46.5 MB in the end (delta: -21.6 MB). Peak memory consumption was 34.5 MB. Max. memory is 14.3 GB. [2020-10-20 05:53:51,011 INFO L168 Benchmark]: Witness Printer took 70.72 ms. Allocated memory is still 102.2 MB. Free memory was 45.1 MB in the beginning and 42.3 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 14.3 GB. [2020-10-20 05:53:51,019 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.50 ms. Allocated memory is still 29.9 MB. Free memory was 15.0 MB in the beginning and 15.0 MB in the end (delta: 38.7 kB). Peak memory consumption was 38.7 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 465.92 ms. Allocated memory was 39.3 MB in the beginning and 41.9 MB in the end (delta: 2.6 MB). Free memory was 20.4 MB in the beginning and 13.1 MB in the end (delta: 7.3 MB). Peak memory consumption was 12.0 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 64.73 ms. Allocated memory is still 41.9 MB. Free memory was 13.1 MB in the beginning and 10.3 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 14.3 GB. * RCFGBuilder took 736.91 ms. Allocated memory was 41.9 MB in the beginning and 46.1 MB in the end (delta: 4.2 MB). Free memory was 10.3 MB in the beginning and 25.6 MB in the end (delta: -15.2 MB). Peak memory consumption was 3.5 MB. Max. memory is 14.3 GB. * TraceAbstraction took 12797.98 ms. Allocated memory was 46.1 MB in the beginning and 102.2 MB in the end (delta: 56.1 MB). Free memory was 24.9 MB in the beginning and 46.5 MB in the end (delta: -21.6 MB). Peak memory consumption was 34.5 MB. Max. memory is 14.3 GB. * Witness Printer took 70.72 ms. Allocated memory is still 102.2 MB. Free memory was 45.1 MB in the beginning and 42.3 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 12]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 544]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 544]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 541]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 544]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 544]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 530]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 530]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 529]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 529]: 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 - PositiveResult [Line: 538]: free always succeeds For all program executions holds that free 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 - PositiveResult [Line: 538]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 534]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 532]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 532]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 534]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 538]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 532]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 539]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 539]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 532]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 539]: free always succeeds For all program executions holds that free always succeeds at this location - AllSpecificationsHoldResult: All specifications hold 24 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 11 procedures, 80 locations, 24 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 12.7s, OverallIterations: 13, TraceHistogramMax: 1, AutomataDifference: 6.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 305 SDtfs, 374 SDslu, 1252 SDs, 0 SdLazy, 3012 SolverSat, 188 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 280 GetRequests, 47 SyntacticMatches, 1 SemanticMatches, 232 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 801 ImplicationChecksByTransitivity, 7.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=60occurred in iteration=0, 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, 13 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 5.0s InterpolantComputationTime, 292 NumberOfCodeBlocks, 292 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 279 ConstructedInterpolants, 0 QuantifiedInterpolants, 87547 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 13 InterpolantComputations, 13 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...