./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/list-ext-properties/test-0158_1-1.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/list-ext-properties/test-0158_1-1.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 aa779df617b83bdc7632b93a3c3bc0bbfee71559 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 05:58:27,483 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 05:58:27,486 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 05:58:27,524 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 05:58:27,524 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 05:58:27,533 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 05:58:27,535 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 05:58:27,539 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 05:58:27,541 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 05:58:27,545 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 05:58:27,546 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 05:58:27,547 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 05:58:27,548 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 05:58:27,551 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 05:58:27,552 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 05:58:27,554 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 05:58:27,555 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 05:58:27,556 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 05:58:27,558 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 05:58:27,565 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 05:58:27,568 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 05:58:27,569 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 05:58:27,570 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 05:58:27,571 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 05:58:27,581 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 05:58:27,583 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 05:58:27,583 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 05:58:27,584 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 05:58:27,586 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 05:58:27,587 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 05:58:27,587 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 05:58:27,588 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 05:58:27,589 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 05:58:27,590 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 05:58:27,591 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 05:58:27,591 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 05:58:27,592 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 05:58:27,592 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 05:58:27,593 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 05:58:27,593 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 05:58:27,595 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 05:58:27,595 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2020-10-20 05:58:27,643 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 05:58:27,643 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 05:58:27,645 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 05:58:27,645 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 05:58:27,646 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 05:58:27,646 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 05:58:27,646 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 05:58:27,646 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-20 05:58:27,647 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 05:58:27,647 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 05:58:27,648 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 05:58:27,648 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-10-20 05:58:27,648 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-10-20 05:58:27,649 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-10-20 05:58:27,649 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 05:58:27,649 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-10-20 05:58:27,650 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 05:58:27,650 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 05:58:27,650 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 05:58:27,650 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 05:58:27,651 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 05:58:27,651 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 05:58:27,651 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 05:58:27,651 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 05:58:27,652 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 05:58:27,652 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 05:58:27,652 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 05:58:27,652 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 05:58:27,653 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 -> aa779df617b83bdc7632b93a3c3bc0bbfee71559 [2020-10-20 05:58:27,862 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 05:58:27,878 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 05:58:27,883 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 05:58:27,886 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 05:58:27,886 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 05:58:27,887 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/list-ext-properties/test-0158_1-1.i [2020-10-20 05:58:27,956 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4a2b8a64a/d31c89c98eeb4aeeb30318d1c025dd2a/FLAG5d4f7fc13 [2020-10-20 05:58:28,469 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 05:58:28,470 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-ext-properties/test-0158_1-1.i [2020-10-20 05:58:28,483 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4a2b8a64a/d31c89c98eeb4aeeb30318d1c025dd2a/FLAG5d4f7fc13 [2020-10-20 05:58:28,766 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4a2b8a64a/d31c89c98eeb4aeeb30318d1c025dd2a [2020-10-20 05:58:28,769 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 05:58:28,774 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-20 05:58:28,776 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 05:58:28,776 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 05:58:28,779 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 05:58:28,780 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 05:58:28" (1/1) ... [2020-10-20 05:58:28,783 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72ffde18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:58:28, skipping insertion in model container [2020-10-20 05:58:28,783 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 05:58:28" (1/1) ... [2020-10-20 05:58:28,791 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 05:58:28,838 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 05:58:29,217 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 05:58:29,229 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 05:58:29,298 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 05:58:29,352 INFO L208 MainTranslator]: Completed translation [2020-10-20 05:58:29,352 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:58:29 WrapperNode [2020-10-20 05:58:29,353 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 05:58:29,353 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 05:58:29,354 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 05:58:29,354 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 05:58:29,373 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:58:29" (1/1) ... [2020-10-20 05:58:29,373 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:58:29" (1/1) ... [2020-10-20 05:58:29,395 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:58:29" (1/1) ... [2020-10-20 05:58:29,396 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:58:29" (1/1) ... [2020-10-20 05:58:29,409 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:58:29" (1/1) ... [2020-10-20 05:58:29,411 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:58:29" (1/1) ... [2020-10-20 05:58:29,414 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:58:29" (1/1) ... [2020-10-20 05:58:29,420 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 05:58:29,421 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 05:58:29,421 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 05:58:29,421 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 05:58:29,422 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:58:29" (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 05:58:29,480 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-20 05:58:29,480 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 05:58:29,480 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-20 05:58:29,480 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-20 05:58:29,481 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-20 05:58:29,481 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2020-10-20 05:58:29,481 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2020-10-20 05:58:29,481 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2020-10-20 05:58:29,481 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-20 05:58:29,482 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-20 05:58:29,482 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-20 05:58:29,482 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-20 05:58:29,483 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-20 05:58:29,483 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-20 05:58:29,483 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 05:58:29,484 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-20 05:58:29,484 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-20 05:58:29,484 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-20 05:58:29,484 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-20 05:58:29,485 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-20 05:58:29,485 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-20 05:58:29,485 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-20 05:58:29,485 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-20 05:58:29,485 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-20 05:58:29,486 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-20 05:58:29,486 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-20 05:58:29,486 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-20 05:58:29,486 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-20 05:58:29,486 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-20 05:58:29,487 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-20 05:58:29,487 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-20 05:58:29,487 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-20 05:58:29,487 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-20 05:58:29,488 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2020-10-20 05:58:29,488 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2020-10-20 05:58:29,488 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2020-10-20 05:58:29,488 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-20 05:58:29,488 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-20 05:58:29,489 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-20 05:58:29,489 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-20 05:58:29,489 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-20 05:58:29,489 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-20 05:58:29,490 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-20 05:58:29,490 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-20 05:58:29,490 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-20 05:58:29,490 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-20 05:58:29,490 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-20 05:58:29,491 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-20 05:58:29,491 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-20 05:58:29,491 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-20 05:58:29,491 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-20 05:58:29,492 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-20 05:58:29,492 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-20 05:58:29,492 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-20 05:58:29,492 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-20 05:58:29,492 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-20 05:58:29,493 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-20 05:58:29,493 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-20 05:58:29,493 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-20 05:58:29,493 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-20 05:58:29,493 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-20 05:58:29,494 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-20 05:58:29,494 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-20 05:58:29,494 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-20 05:58:29,494 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-20 05:58:29,495 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-20 05:58:29,495 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-20 05:58:29,495 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-20 05:58:29,495 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-20 05:58:29,496 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-20 05:58:29,496 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-20 05:58:29,496 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-20 05:58:29,496 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-20 05:58:29,496 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-20 05:58:29,497 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-20 05:58:29,497 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-20 05:58:29,497 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-20 05:58:29,497 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-20 05:58:29,497 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-20 05:58:29,498 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-20 05:58:29,498 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-20 05:58:29,498 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-20 05:58:29,498 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-20 05:58:29,498 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-20 05:58:29,499 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-20 05:58:29,499 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-20 05:58:29,499 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-20 05:58:29,499 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-20 05:58:29,499 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-20 05:58:29,500 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-20 05:58:29,500 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-20 05:58:29,500 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-20 05:58:29,500 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-20 05:58:29,500 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-20 05:58:29,500 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-20 05:58:29,501 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-20 05:58:29,501 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-20 05:58:29,501 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-20 05:58:29,501 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-20 05:58:29,501 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-20 05:58:29,501 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-20 05:58:29,501 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-20 05:58:29,501 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-20 05:58:29,501 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-20 05:58:29,502 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-20 05:58:29,502 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-20 05:58:29,502 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-20 05:58:29,502 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-20 05:58:29,502 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-20 05:58:29,502 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-20 05:58:29,502 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-20 05:58:29,502 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-20 05:58:29,502 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-20 05:58:29,503 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-20 05:58:29,503 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-20 05:58:29,503 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-20 05:58:29,503 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-20 05:58:29,503 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-20 05:58:29,503 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-20 05:58:29,504 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-20 05:58:29,504 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-20 05:58:29,504 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-20 05:58:29,504 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-20 05:58:29,504 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-20 05:58:29,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-20 05:58:29,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-20 05:58:29,505 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-20 05:58:29,505 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-20 05:58:29,505 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-20 05:58:29,506 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-20 05:58:29,506 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-20 05:58:29,506 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 05:58:30,037 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 05:58:30,037 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-20 05:58:30,039 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 05:58:30 BoogieIcfgContainer [2020-10-20 05:58:30,039 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 05:58:30,041 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 05:58:30,041 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 05:58:30,044 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 05:58:30,044 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 05:58:28" (1/3) ... [2020-10-20 05:58:30,045 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@381fa3b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 05:58:30, skipping insertion in model container [2020-10-20 05:58:30,046 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:58:29" (2/3) ... [2020-10-20 05:58:30,046 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@381fa3b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 05:58:30, skipping insertion in model container [2020-10-20 05:58:30,046 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 05:58:30" (3/3) ... [2020-10-20 05:58:30,048 INFO L111 eAbstractionObserver]: Analyzing ICFG test-0158_1-1.i [2020-10-20 05:58:30,058 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 05:58:30,064 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 17 error locations. [2020-10-20 05:58:30,074 INFO L253 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2020-10-20 05:58:30,091 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 05:58:30,091 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-20 05:58:30,091 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 05:58:30,091 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 05:58:30,091 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 05:58:30,091 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 05:58:30,092 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 05:58:30,092 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 05:58:30,106 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2020-10-20 05:58:30,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-20 05:58:30,116 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:58:30,116 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:58:30,117 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr15ENSURES_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr9REQUIRES_VIOLATION, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr12ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 05:58:30,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:58:30,121 INFO L82 PathProgramCache]: Analyzing trace with hash -1140282237, now seen corresponding path program 1 times [2020-10-20 05:58:30,130 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:58:30,130 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923988059] [2020-10-20 05:58:30,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:58:30,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:58:30,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 05:58:30,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:58:30,383 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 05:58:30,384 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923988059] [2020-10-20 05:58:30,385 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 05:58:30,385 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 05:58:30,386 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223138496] [2020-10-20 05:58:30,391 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 05:58:30,392 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 05:58:30,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 05:58:30,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 05:58:30,409 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 4 states. [2020-10-20 05:58:30,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:58:30,521 INFO L93 Difference]: Finished difference Result 32 states and 33 transitions. [2020-10-20 05:58:30,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 05:58:30,523 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-10-20 05:58:30,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:58:30,532 INFO L225 Difference]: With dead ends: 32 [2020-10-20 05:58:30,533 INFO L226 Difference]: Without dead ends: 29 [2020-10-20 05:58:30,535 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 05:58:30,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-10-20 05:58:30,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-10-20 05:58:30,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-20 05:58:30,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2020-10-20 05:58:30,571 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 7 [2020-10-20 05:58:30,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:58:30,571 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions. [2020-10-20 05:58:30,571 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 05:58:30,572 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2020-10-20 05:58:30,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-20 05:58:30,572 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:58:30,572 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:58:30,573 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 05:58:30,573 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr15ENSURES_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr9REQUIRES_VIOLATION, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr12ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 05:58:30,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:58:30,573 INFO L82 PathProgramCache]: Analyzing trace with hash -1140282236, now seen corresponding path program 1 times [2020-10-20 05:58:30,574 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:58:30,574 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872010379] [2020-10-20 05:58:30,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:58:30,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:58:30,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 05:58:30,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:58:30,666 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 05:58:30,667 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872010379] [2020-10-20 05:58:30,667 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 05:58:30,667 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 05:58:30,668 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4482201] [2020-10-20 05:58:30,669 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 05:58:30,670 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 05:58:30,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 05:58:30,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 05:58:30,671 INFO L87 Difference]: Start difference. First operand 29 states and 30 transitions. Second operand 4 states. [2020-10-20 05:58:30,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:58:30,736 INFO L93 Difference]: Finished difference Result 23 states and 24 transitions. [2020-10-20 05:58:30,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 05:58:30,737 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-10-20 05:58:30,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:58:30,738 INFO L225 Difference]: With dead ends: 23 [2020-10-20 05:58:30,738 INFO L226 Difference]: Without dead ends: 23 [2020-10-20 05:58:30,739 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 05:58:30,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-10-20 05:58:30,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-10-20 05:58:30,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-10-20 05:58:30,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2020-10-20 05:58:30,744 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 7 [2020-10-20 05:58:30,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:58:30,745 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2020-10-20 05:58:30,745 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 05:58:30,745 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2020-10-20 05:58:30,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-20 05:58:30,746 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:58:30,746 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:58:30,747 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-20 05:58:30,747 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr15ENSURES_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr9REQUIRES_VIOLATION, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr12ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 05:58:30,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:58:30,747 INFO L82 PathProgramCache]: Analyzing trace with hash -1229048927, now seen corresponding path program 1 times [2020-10-20 05:58:30,748 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:58:30,748 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966373625] [2020-10-20 05:58:30,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:58:30,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:58:30,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 05:58:30,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:58:30,862 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 05:58:30,862 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966373625] [2020-10-20 05:58:30,862 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 05:58:30,863 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-20 05:58:30,863 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210205281] [2020-10-20 05:58:30,864 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-20 05:58:30,864 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 05:58:30,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-20 05:58:30,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-20 05:58:30,865 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand 6 states. [2020-10-20 05:58:30,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:58:30,947 INFO L93 Difference]: Finished difference Result 22 states and 23 transitions. [2020-10-20 05:58:30,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 05:58:30,948 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-10-20 05:58:30,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:58:30,949 INFO L225 Difference]: With dead ends: 22 [2020-10-20 05:58:30,949 INFO L226 Difference]: Without dead ends: 22 [2020-10-20 05:58:30,949 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-20 05:58:30,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-10-20 05:58:30,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-10-20 05:58:30,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-10-20 05:58:30,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2020-10-20 05:58:30,953 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 14 [2020-10-20 05:58:30,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:58:30,954 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2020-10-20 05:58:30,954 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-20 05:58:30,954 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2020-10-20 05:58:30,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-20 05:58:30,955 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:58:30,955 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:58:30,956 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-20 05:58:30,956 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr15ENSURES_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr9REQUIRES_VIOLATION, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr12ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 05:58:30,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:58:30,957 INFO L82 PathProgramCache]: Analyzing trace with hash 554189009, now seen corresponding path program 1 times [2020-10-20 05:58:30,957 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:58:30,957 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890690009] [2020-10-20 05:58:30,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:58:30,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:58:31,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 05:58:31,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:58:31,077 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 05:58:31,077 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890690009] [2020-10-20 05:58:31,077 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 05:58:31,078 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-20 05:58:31,078 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279269402] [2020-10-20 05:58:31,078 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-20 05:58:31,079 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 05:58:31,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-20 05:58:31,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-20 05:58:31,080 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand 6 states. [2020-10-20 05:58:31,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:58:31,157 INFO L93 Difference]: Finished difference Result 21 states and 22 transitions. [2020-10-20 05:58:31,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 05:58:31,157 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-10-20 05:58:31,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:58:31,158 INFO L225 Difference]: With dead ends: 21 [2020-10-20 05:58:31,159 INFO L226 Difference]: Without dead ends: 21 [2020-10-20 05:58:31,159 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-20 05:58:31,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-10-20 05:58:31,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2020-10-20 05:58:31,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-10-20 05:58:31,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2020-10-20 05:58:31,163 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 15 [2020-10-20 05:58:31,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:58:31,163 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2020-10-20 05:58:31,164 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-20 05:58:31,164 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2020-10-20 05:58:31,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-20 05:58:31,165 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:58:31,165 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:58:31,165 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-20 05:58:31,165 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr15ENSURES_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr9REQUIRES_VIOLATION, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr12ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 05:58:31,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:58:31,166 INFO L82 PathProgramCache]: Analyzing trace with hash -9821, now seen corresponding path program 1 times [2020-10-20 05:58:31,166 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:58:31,167 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957195225] [2020-10-20 05:58:31,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:58:31,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:58:31,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 05:58:31,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:58:31,257 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 05:58:31,257 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957195225] [2020-10-20 05:58:31,258 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 05:58:31,258 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-20 05:58:31,258 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633699817] [2020-10-20 05:58:31,259 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-20 05:58:31,259 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 05:58:31,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-20 05:58:31,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-20 05:58:31,260 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand 6 states. [2020-10-20 05:58:31,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:58:31,327 INFO L93 Difference]: Finished difference Result 20 states and 21 transitions. [2020-10-20 05:58:31,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 05:58:31,328 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-10-20 05:58:31,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:58:31,329 INFO L225 Difference]: With dead ends: 20 [2020-10-20 05:58:31,329 INFO L226 Difference]: Without dead ends: 20 [2020-10-20 05:58:31,329 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-20 05:58:31,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-10-20 05:58:31,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2020-10-20 05:58:31,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-10-20 05:58:31,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2020-10-20 05:58:31,332 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 16 [2020-10-20 05:58:31,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:58:31,333 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2020-10-20 05:58:31,333 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-20 05:58:31,333 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2020-10-20 05:58:31,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-20 05:58:31,334 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:58:31,334 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:58:31,335 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-20 05:58:31,335 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr15ENSURES_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr9REQUIRES_VIOLATION, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr12ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 05:58:31,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:58:31,335 INFO L82 PathProgramCache]: Analyzing trace with hash -304364, now seen corresponding path program 1 times [2020-10-20 05:58:31,336 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:58:31,336 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625417987] [2020-10-20 05:58:31,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:58:31,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:58:31,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 05:58:31,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:58:31,549 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 05:58:31,550 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625417987] [2020-10-20 05:58:31,550 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 05:58:31,550 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-20 05:58:31,550 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692902705] [2020-10-20 05:58:31,551 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-20 05:58:31,551 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 05:58:31,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-20 05:58:31,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-20 05:58:31,552 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand 8 states. [2020-10-20 05:58:31,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:58:31,739 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2020-10-20 05:58:31,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-20 05:58:31,740 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 17 [2020-10-20 05:58:31,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:58:31,740 INFO L225 Difference]: With dead ends: 19 [2020-10-20 05:58:31,740 INFO L226 Difference]: Without dead ends: 0 [2020-10-20 05:58:31,741 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-20 05:58:31,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-20 05:58:31,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-20 05:58:31,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-20 05:58:31,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-20 05:58:31,742 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-10-20 05:58:31,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:58:31,742 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 05:58:31,742 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-20 05:58:31,743 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-20 05:58:31,743 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-20 05:58:31,743 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-20 05:58:31,748 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 05:58:31 BoogieIcfgContainer [2020-10-20 05:58:31,748 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 05:58:31,749 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 05:58:31,749 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 05:58:31,749 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 05:58:31,750 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 05:58:30" (3/4) ... [2020-10-20 05:58:31,754 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-20 05:58:31,762 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure reach_error [2020-10-20 05:58:31,762 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2020-10-20 05:58:31,762 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_32 [2020-10-20 05:58:31,763 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_64 [2020-10-20 05:58:31,763 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint16_identity [2020-10-20 05:58:31,763 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint64_identity [2020-10-20 05:58:31,764 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2020-10-20 05:58:31,764 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint32_identity [2020-10-20 05:58:31,770 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2020-10-20 05:58:31,770 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2020-10-20 05:58:31,770 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-10-20 05:58:31,771 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-20 05:58:31,840 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-20 05:58:31,841 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 05:58:31,848 INFO L168 Benchmark]: Toolchain (without parser) took 3072.52 ms. Allocated memory was 37.2 MB in the beginning and 61.9 MB in the end (delta: 24.6 MB). Free memory was 10.5 MB in the beginning and 29.7 MB in the end (delta: -19.2 MB). Peak memory consumption was 5.4 MB. Max. memory is 14.3 GB. [2020-10-20 05:58:31,851 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 36.7 MB. Free memory was 15.7 MB in the beginning and 15.7 MB in the end (delta: 49.2 kB). Peak memory consumption was 49.2 kB. Max. memory is 14.3 GB. [2020-10-20 05:58:31,852 INFO L168 Benchmark]: CACSL2BoogieTranslator took 577.56 ms. Allocated memory was 37.2 MB in the beginning and 46.1 MB in the end (delta: 8.9 MB). Free memory was 9.6 MB in the beginning and 16.6 MB in the end (delta: -7.0 MB). Peak memory consumption was 8.7 MB. Max. memory is 14.3 GB. [2020-10-20 05:58:31,853 INFO L168 Benchmark]: Boogie Preprocessor took 67.16 ms. Allocated memory was 46.1 MB in the beginning and 47.2 MB in the end (delta: 1.0 MB). Free memory was 16.6 MB in the beginning and 28.4 MB in the end (delta: -11.9 MB). Peak memory consumption was 3.0 MB. Max. memory is 14.3 GB. [2020-10-20 05:58:31,855 INFO L168 Benchmark]: RCFGBuilder took 618.57 ms. Allocated memory was 47.2 MB in the beginning and 50.3 MB in the end (delta: 3.1 MB). Free memory was 28.4 MB in the beginning and 21.6 MB in the end (delta: 6.8 MB). Peak memory consumption was 17.6 MB. Max. memory is 14.3 GB. [2020-10-20 05:58:31,856 INFO L168 Benchmark]: TraceAbstraction took 1707.95 ms. Allocated memory was 50.3 MB in the beginning and 61.9 MB in the end (delta: 11.5 MB). Free memory was 20.9 MB in the beginning and 33.3 MB in the end (delta: -12.4 MB). There was no memory consumed. Max. memory is 14.3 GB. [2020-10-20 05:58:31,859 INFO L168 Benchmark]: Witness Printer took 92.08 ms. Allocated memory is still 61.9 MB. Free memory was 33.3 MB in the beginning and 29.7 MB in the end (delta: 3.7 MB). Peak memory consumption was 3.7 MB. Max. memory is 14.3 GB. [2020-10-20 05:58:31,862 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 36.7 MB. Free memory was 15.7 MB in the beginning and 15.7 MB in the end (delta: 49.2 kB). Peak memory consumption was 49.2 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 577.56 ms. Allocated memory was 37.2 MB in the beginning and 46.1 MB in the end (delta: 8.9 MB). Free memory was 9.6 MB in the beginning and 16.6 MB in the end (delta: -7.0 MB). Peak memory consumption was 8.7 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 67.16 ms. Allocated memory was 46.1 MB in the beginning and 47.2 MB in the end (delta: 1.0 MB). Free memory was 16.6 MB in the beginning and 28.4 MB in the end (delta: -11.9 MB). Peak memory consumption was 3.0 MB. Max. memory is 14.3 GB. * RCFGBuilder took 618.57 ms. Allocated memory was 47.2 MB in the beginning and 50.3 MB in the end (delta: 3.1 MB). Free memory was 28.4 MB in the beginning and 21.6 MB in the end (delta: 6.8 MB). Peak memory consumption was 17.6 MB. Max. memory is 14.3 GB. * TraceAbstraction took 1707.95 ms. Allocated memory was 50.3 MB in the beginning and 61.9 MB in the end (delta: 11.5 MB). Free memory was 20.9 MB in the beginning and 33.3 MB in the end (delta: -12.4 MB). There was no memory consumed. Max. memory is 14.3 GB. * Witness Printer took 92.08 ms. Allocated memory is still 61.9 MB. Free memory was 33.3 MB in the beginning and 29.7 MB in the end (delta: 3.7 MB). Peak memory consumption was 3.7 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: 524]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 541]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 543]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 541]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 543]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 538]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 543]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 540]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 540]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 536]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 536]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 538]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 543]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 543]: 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: 534]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - AllSpecificationsHoldResult: All specifications hold 17 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 58 locations, 17 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.6s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 77 SDtfs, 113 SDslu, 107 SDs, 0 SdLazy, 268 SolverSat, 39 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 48 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=38occurred 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: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 76 NumberOfCodeBlocks, 76 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 70 ConstructedInterpolants, 0 QuantifiedInterpolants, 8782 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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...