./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memcleanup.prp --file ../sv-benchmarks/c/list-properties/splice-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (memcleanup) Using default analysis Version 5fbdf5bf Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/list-properties/splice-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-MemCleanup-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-memcleanup) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 22d654ad48908d2db90206c3276d568dc9029be1 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-memcleanup) --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5fbdf5b [2021-08-30 16:03:41,938 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-30 16:03:41,940 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-30 16:03:41,974 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-30 16:03:41,975 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-30 16:03:41,976 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-30 16:03:41,977 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-30 16:03:41,978 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-30 16:03:41,980 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-30 16:03:41,981 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-30 16:03:41,981 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-30 16:03:41,982 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-30 16:03:41,983 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-30 16:03:41,983 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-30 16:03:41,985 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-30 16:03:41,986 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-30 16:03:41,986 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-30 16:03:41,987 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-30 16:03:41,988 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-30 16:03:41,990 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-30 16:03:41,991 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-30 16:03:41,992 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-30 16:03:41,993 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-30 16:03:41,993 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-30 16:03:41,996 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-30 16:03:41,996 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-30 16:03:41,996 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-30 16:03:41,997 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-30 16:03:41,997 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-30 16:03:41,998 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-30 16:03:41,998 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-30 16:03:41,999 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-30 16:03:41,999 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-30 16:03:42,000 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-30 16:03:42,001 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-30 16:03:42,001 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-30 16:03:42,002 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-30 16:03:42,002 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-30 16:03:42,002 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-30 16:03:42,003 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-30 16:03:42,003 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-30 16:03:42,004 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-MemCleanup-32bit-Automizer_Default.epf [2021-08-30 16:03:42,024 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-30 16:03:42,024 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-30 16:03:42,025 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-30 16:03:42,025 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-30 16:03:42,026 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-30 16:03:42,026 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-30 16:03:42,026 INFO L138 SettingsManager]: * Use SBE=true [2021-08-30 16:03:42,026 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-30 16:03:42,026 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-30 16:03:42,027 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-30 16:03:42,027 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-30 16:03:42,027 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-30 16:03:42,034 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-30 16:03:42,034 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-08-30 16:03:42,034 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-08-30 16:03:42,034 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-30 16:03:42,034 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-08-30 16:03:42,034 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-30 16:03:42,035 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-30 16:03:42,035 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-30 16:03:42,035 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-30 16:03:42,035 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-30 16:03:42,035 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-30 16:03:42,035 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-30 16:03:42,036 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-30 16:03:42,036 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-30 16:03:42,036 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-30 16:03:42,036 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-30 16:03:42,036 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 22d654ad48908d2db90206c3276d568dc9029be1 [2021-08-30 16:03:42,342 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-30 16:03:42,370 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-30 16:03:42,372 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-30 16:03:42,373 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-30 16:03:42,377 INFO L275 PluginConnector]: CDTParser initialized [2021-08-30 16:03:42,378 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/list-properties/splice-1.i [2021-08-30 16:03:42,535 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4897472d0/493028f6567f480c946ed14dba2b7373/FLAG10131ba2c [2021-08-30 16:03:43,110 INFO L306 CDTParser]: Found 1 translation units. [2021-08-30 16:03:43,111 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-properties/splice-1.i [2021-08-30 16:03:43,123 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4897472d0/493028f6567f480c946ed14dba2b7373/FLAG10131ba2c [2021-08-30 16:03:43,135 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4897472d0/493028f6567f480c946ed14dba2b7373 [2021-08-30 16:03:43,137 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-30 16:03:43,139 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-30 16:03:43,140 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-30 16:03:43,140 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-30 16:03:43,143 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-30 16:03:43,144 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 04:03:43" (1/1) ... [2021-08-30 16:03:43,145 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@384c968f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:03:43, skipping insertion in model container [2021-08-30 16:03:43,145 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 04:03:43" (1/1) ... [2021-08-30 16:03:43,150 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-30 16:03:43,176 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-30 16:03:43,475 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-properties/splice-1.i[23721,23734] [2021-08-30 16:03:43,480 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-30 16:03:43,494 INFO L203 MainTranslator]: Completed pre-run [2021-08-30 16:03:43,549 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-properties/splice-1.i[23721,23734] [2021-08-30 16:03:43,551 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-30 16:03:43,580 INFO L208 MainTranslator]: Completed translation [2021-08-30 16:03:43,581 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:03:43 WrapperNode [2021-08-30 16:03:43,582 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-30 16:03:43,583 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-30 16:03:43,583 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-30 16:03:43,584 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-30 16:03:43,594 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:03:43" (1/1) ... [2021-08-30 16:03:43,595 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:03:43" (1/1) ... [2021-08-30 16:03:43,624 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:03:43" (1/1) ... [2021-08-30 16:03:43,625 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:03:43" (1/1) ... [2021-08-30 16:03:43,648 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:03:43" (1/1) ... [2021-08-30 16:03:43,660 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:03:43" (1/1) ... [2021-08-30 16:03:43,663 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:03:43" (1/1) ... [2021-08-30 16:03:43,674 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-30 16:03:43,682 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-30 16:03:43,682 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-30 16:03:43,683 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-30 16:03:43,683 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:03:43" (1/1) ... [2021-08-30 16:03:43,690 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-30 16:03:43,698 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-30 16:03:43,714 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-08-30 16:03:43,736 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-08-30 16:03:43,763 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-08-30 16:03:43,764 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-30 16:03:43,764 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-08-30 16:03:43,765 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-08-30 16:03:43,765 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-08-30 16:03:43,765 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-08-30 16:03:43,771 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-08-30 16:03:43,771 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-08-30 16:03:43,772 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2021-08-30 16:03:43,772 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-08-30 16:03:43,773 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-08-30 16:03:43,773 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-08-30 16:03:43,773 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-08-30 16:03:43,773 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-08-30 16:03:43,773 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-08-30 16:03:43,773 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-30 16:03:43,774 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-08-30 16:03:43,774 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-08-30 16:03:43,774 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-08-30 16:03:43,774 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-08-30 16:03:43,774 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-08-30 16:03:43,774 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-08-30 16:03:43,774 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-08-30 16:03:43,775 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-08-30 16:03:43,775 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-08-30 16:03:43,775 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-08-30 16:03:43,775 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-08-30 16:03:43,775 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-08-30 16:03:43,775 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-08-30 16:03:43,776 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-08-30 16:03:43,776 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-08-30 16:03:43,776 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-08-30 16:03:43,776 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-08-30 16:03:43,776 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-08-30 16:03:43,776 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-08-30 16:03:43,776 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-08-30 16:03:43,777 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-08-30 16:03:43,777 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-08-30 16:03:43,777 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-08-30 16:03:43,777 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-08-30 16:03:43,777 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-08-30 16:03:43,777 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-08-30 16:03:43,777 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-08-30 16:03:43,778 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-08-30 16:03:43,778 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-08-30 16:03:43,778 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-08-30 16:03:43,778 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-08-30 16:03:43,779 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-08-30 16:03:43,779 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-08-30 16:03:43,779 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-08-30 16:03:43,780 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-08-30 16:03:43,780 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-08-30 16:03:43,780 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-08-30 16:03:43,780 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-08-30 16:03:43,780 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-08-30 16:03:43,781 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-08-30 16:03:43,781 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-08-30 16:03:43,781 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-08-30 16:03:43,781 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-08-30 16:03:43,781 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-08-30 16:03:43,782 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-08-30 16:03:43,782 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-08-30 16:03:43,782 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-08-30 16:03:43,782 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-08-30 16:03:43,782 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-08-30 16:03:43,782 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-08-30 16:03:43,783 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-08-30 16:03:43,783 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-08-30 16:03:43,784 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-08-30 16:03:43,784 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-08-30 16:03:43,784 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-08-30 16:03:43,785 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-08-30 16:03:43,785 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-08-30 16:03:43,785 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-08-30 16:03:43,785 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-08-30 16:03:43,785 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-08-30 16:03:43,785 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-08-30 16:03:43,785 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-08-30 16:03:43,786 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-08-30 16:03:43,786 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-08-30 16:03:43,786 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-08-30 16:03:43,787 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-08-30 16:03:43,787 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-08-30 16:03:43,787 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-08-30 16:03:43,787 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-08-30 16:03:43,787 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-08-30 16:03:43,787 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-08-30 16:03:43,787 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-08-30 16:03:43,787 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-08-30 16:03:43,788 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-08-30 16:03:43,788 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-08-30 16:03:43,788 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-08-30 16:03:43,788 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-08-30 16:03:43,788 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-08-30 16:03:43,788 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-08-30 16:03:43,788 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-08-30 16:03:43,789 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-08-30 16:03:43,789 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-08-30 16:03:43,789 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-08-30 16:03:43,789 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-08-30 16:03:43,789 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-08-30 16:03:43,789 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-08-30 16:03:43,789 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-08-30 16:03:43,790 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-08-30 16:03:43,790 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-08-30 16:03:43,790 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-08-30 16:03:43,790 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-08-30 16:03:43,790 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-08-30 16:03:43,791 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-08-30 16:03:43,791 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-08-30 16:03:43,791 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-08-30 16:03:43,792 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-08-30 16:03:43,792 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-08-30 16:03:43,792 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-08-30 16:03:43,792 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-08-30 16:03:43,792 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-08-30 16:03:43,793 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-08-30 16:03:43,793 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-08-30 16:03:43,793 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-08-30 16:03:43,793 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-08-30 16:03:43,793 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-08-30 16:03:43,793 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-08-30 16:03:43,793 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-08-30 16:03:43,794 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2021-08-30 16:03:43,794 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-08-30 16:03:43,794 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-08-30 16:03:43,794 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-30 16:03:43,795 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-08-30 16:03:43,796 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-08-30 16:03:43,798 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-08-30 16:03:43,798 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-08-30 16:03:43,798 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-30 16:03:43,812 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-30 16:03:43,813 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-30 16:03:44,056 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2021-08-30 16:03:44,167 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-30 16:03:44,168 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-08-30 16:03:44,170 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 04:03:44 BoogieIcfgContainer [2021-08-30 16:03:44,170 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-30 16:03:44,186 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-30 16:03:44,186 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-30 16:03:44,189 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-30 16:03:44,189 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 04:03:43" (1/3) ... [2021-08-30 16:03:44,190 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@376b9660 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 04:03:44, skipping insertion in model container [2021-08-30 16:03:44,190 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:03:43" (2/3) ... [2021-08-30 16:03:44,190 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@376b9660 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 04:03:44, skipping insertion in model container [2021-08-30 16:03:44,190 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 04:03:44" (3/3) ... [2021-08-30 16:03:44,191 INFO L111 eAbstractionObserver]: Analyzing ICFG splice-1.i [2021-08-30 16:03:44,196 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-30 16:03:44,196 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 30 error locations. [2021-08-30 16:03:44,232 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-30 16:03:44,238 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-08-30 16:03:44,239 INFO L340 AbstractCegarLoop]: Starting to check reachability of 30 error locations. [2021-08-30 16:03:44,252 INFO L276 IsEmpty]: Start isEmpty. Operand has 84 states, 47 states have (on average 1.9574468085106382) internal successors, (92), 78 states have internal predecessors, (92), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-08-30 16:03:44,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-08-30 16:03:44,258 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 16:03:44,259 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 16:03:44,259 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr8REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 25 more)] === [2021-08-30 16:03:44,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 16:03:44,264 INFO L82 PathProgramCache]: Analyzing trace with hash 428760740, now seen corresponding path program 1 times [2021-08-30 16:03:44,272 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 16:03:44,272 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725813789] [2021-08-30 16:03:44,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 16:03:44,273 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 16:03:44,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:03:44,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 16:03:44,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:03:44,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 16:03:44,452 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 16:03:44,452 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725813789] [2021-08-30 16:03:44,452 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725813789] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 16:03:44,453 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 16:03:44,453 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-30 16:03:44,454 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773838275] [2021-08-30 16:03:44,457 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-30 16:03:44,458 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 16:03:44,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-30 16:03:44,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-30 16:03:44,493 INFO L87 Difference]: Start difference. First operand has 84 states, 47 states have (on average 1.9574468085106382) internal successors, (92), 78 states have internal predecessors, (92), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:03:44,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 16:03:44,719 INFO L93 Difference]: Finished difference Result 84 states and 93 transitions. [2021-08-30 16:03:44,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-30 16:03:44,722 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2021-08-30 16:03:44,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 16:03:44,727 INFO L225 Difference]: With dead ends: 84 [2021-08-30 16:03:44,728 INFO L226 Difference]: Without dead ends: 77 [2021-08-30 16:03:44,729 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 19.80ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-30 16:03:44,732 INFO L928 BasicCegarLoop]: 7 mSDtfsCounter, 2 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 158.79ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.35ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 194.96ms IncrementalHoareTripleChecker+Time [2021-08-30 16:03:44,733 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 9 Invalid, 174 Unknown, 0 Unchecked, 5.35ms Time], IncrementalHoareTripleChecker [3 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 194.96ms Time] [2021-08-30 16:03:44,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2021-08-30 16:03:44,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2021-08-30 16:03:44,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 44 states have (on average 1.8409090909090908) internal successors, (81), 73 states have internal predecessors, (81), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:03:44,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 84 transitions. [2021-08-30 16:03:44,766 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 84 transitions. Word has length 10 [2021-08-30 16:03:44,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 16:03:44,767 INFO L470 AbstractCegarLoop]: Abstraction has 77 states and 84 transitions. [2021-08-30 16:03:44,767 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:03:44,767 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 84 transitions. [2021-08-30 16:03:44,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-08-30 16:03:44,768 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 16:03:44,768 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 16:03:44,768 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-30 16:03:44,768 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr8REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 25 more)] === [2021-08-30 16:03:44,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 16:03:44,769 INFO L82 PathProgramCache]: Analyzing trace with hash 406645412, now seen corresponding path program 1 times [2021-08-30 16:03:44,769 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 16:03:44,770 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775623571] [2021-08-30 16:03:44,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 16:03:44,770 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 16:03:44,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:03:44,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 16:03:44,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:03:44,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 16:03:44,878 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 16:03:44,878 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775623571] [2021-08-30 16:03:44,878 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775623571] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 16:03:44,878 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 16:03:44,879 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-30 16:03:44,879 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813965735] [2021-08-30 16:03:44,880 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-30 16:03:44,880 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 16:03:44,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-30 16:03:44,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-30 16:03:44,881 INFO L87 Difference]: Start difference. First operand 77 states and 84 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:03:45,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 16:03:45,042 INFO L93 Difference]: Finished difference Result 84 states and 92 transitions. [2021-08-30 16:03:45,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-30 16:03:45,043 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-08-30 16:03:45,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 16:03:45,044 INFO L225 Difference]: With dead ends: 84 [2021-08-30 16:03:45,045 INFO L226 Difference]: Without dead ends: 84 [2021-08-30 16:03:45,045 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 23.62ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-08-30 16:03:45,046 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 118 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 110.88ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.88ms SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 138.13ms IncrementalHoareTripleChecker+Time [2021-08-30 16:03:45,047 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [118 Valid, 10 Invalid, 215 Unknown, 0 Unchecked, 3.88ms Time], IncrementalHoareTripleChecker [20 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 138.13ms Time] [2021-08-30 16:03:45,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2021-08-30 16:03:45,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 78. [2021-08-30 16:03:45,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 51 states have (on average 1.7254901960784315) internal successors, (88), 74 states have internal predecessors, (88), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:03:45,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 91 transitions. [2021-08-30 16:03:45,055 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 91 transitions. Word has length 11 [2021-08-30 16:03:45,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 16:03:45,055 INFO L470 AbstractCegarLoop]: Abstraction has 78 states and 91 transitions. [2021-08-30 16:03:45,055 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:03:45,056 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 91 transitions. [2021-08-30 16:03:45,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-08-30 16:03:45,056 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 16:03:45,056 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 16:03:45,056 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-30 16:03:45,057 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr9REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 25 more)] === [2021-08-30 16:03:45,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 16:03:45,057 INFO L82 PathProgramCache]: Analyzing trace with hash 406645413, now seen corresponding path program 1 times [2021-08-30 16:03:45,058 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 16:03:45,058 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044981049] [2021-08-30 16:03:45,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 16:03:45,058 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 16:03:45,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:03:45,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 16:03:45,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:03:45,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 16:03:45,147 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 16:03:45,147 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044981049] [2021-08-30 16:03:45,147 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044981049] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 16:03:45,147 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 16:03:45,148 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-30 16:03:45,148 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82478409] [2021-08-30 16:03:45,148 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-30 16:03:45,148 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 16:03:45,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-30 16:03:45,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-30 16:03:45,149 INFO L87 Difference]: Start difference. First operand 78 states and 91 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:03:45,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 16:03:45,335 INFO L93 Difference]: Finished difference Result 92 states and 102 transitions. [2021-08-30 16:03:45,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-30 16:03:45,336 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-08-30 16:03:45,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 16:03:45,337 INFO L225 Difference]: With dead ends: 92 [2021-08-30 16:03:45,340 INFO L226 Difference]: Without dead ends: 92 [2021-08-30 16:03:45,341 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 29.94ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-08-30 16:03:45,347 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 110 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 132.35ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.50ms SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 164.37ms IncrementalHoareTripleChecker+Time [2021-08-30 16:03:45,349 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [110 Valid, 10 Invalid, 237 Unknown, 0 Unchecked, 2.50ms Time], IncrementalHoareTripleChecker [15 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 164.37ms Time] [2021-08-30 16:03:45,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2021-08-30 16:03:45,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 85. [2021-08-30 16:03:45,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 59 states have (on average 1.5593220338983051) internal successors, (92), 81 states have internal predecessors, (92), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:03:45,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 95 transitions. [2021-08-30 16:03:45,366 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 95 transitions. Word has length 11 [2021-08-30 16:03:45,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 16:03:45,366 INFO L470 AbstractCegarLoop]: Abstraction has 85 states and 95 transitions. [2021-08-30 16:03:45,366 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:03:45,366 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 95 transitions. [2021-08-30 16:03:45,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-08-30 16:03:45,367 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 16:03:45,367 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 16:03:45,367 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-30 16:03:45,368 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr29ENSURES_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 25 more)] === [2021-08-30 16:03:45,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 16:03:45,369 INFO L82 PathProgramCache]: Analyzing trace with hash -1729229184, now seen corresponding path program 1 times [2021-08-30 16:03:45,369 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 16:03:45,369 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538362758] [2021-08-30 16:03:45,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 16:03:45,370 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 16:03:45,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-30 16:03:45,404 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-30 16:03:45,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-30 16:03:45,474 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-30 16:03:45,476 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-08-30 16:03:45,478 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr29ENSURES_VIOLATIONMEMORY_LEAK (29 of 30 remaining) [2021-08-30 16:03:45,479 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0REQUIRES_VIOLATION (28 of 30 remaining) [2021-08-30 16:03:45,480 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr1REQUIRES_VIOLATION (27 of 30 remaining) [2021-08-30 16:03:45,480 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr2REQUIRES_VIOLATION (26 of 30 remaining) [2021-08-30 16:03:45,481 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr3REQUIRES_VIOLATION (25 of 30 remaining) [2021-08-30 16:03:45,481 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr4REQUIRES_VIOLATION (24 of 30 remaining) [2021-08-30 16:03:45,481 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr5REQUIRES_VIOLATION (23 of 30 remaining) [2021-08-30 16:03:45,481 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr6REQUIRES_VIOLATION (22 of 30 remaining) [2021-08-30 16:03:45,482 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr7REQUIRES_VIOLATION (21 of 30 remaining) [2021-08-30 16:03:45,482 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr8REQUIRES_VIOLATION (20 of 30 remaining) [2021-08-30 16:03:45,484 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr9REQUIRES_VIOLATION (19 of 30 remaining) [2021-08-30 16:03:45,484 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr10REQUIRES_VIOLATION (18 of 30 remaining) [2021-08-30 16:03:45,485 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr11REQUIRES_VIOLATION (17 of 30 remaining) [2021-08-30 16:03:45,485 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr12REQUIRES_VIOLATION (16 of 30 remaining) [2021-08-30 16:03:45,486 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr13REQUIRES_VIOLATION (15 of 30 remaining) [2021-08-30 16:03:45,486 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr14REQUIRES_VIOLATION (14 of 30 remaining) [2021-08-30 16:03:45,486 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr15REQUIRES_VIOLATION (13 of 30 remaining) [2021-08-30 16:03:45,486 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr16REQUIRES_VIOLATION (12 of 30 remaining) [2021-08-30 16:03:45,486 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr17REQUIRES_VIOLATION (11 of 30 remaining) [2021-08-30 16:03:45,486 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr18REQUIRES_VIOLATION (10 of 30 remaining) [2021-08-30 16:03:45,487 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr19REQUIRES_VIOLATION (9 of 30 remaining) [2021-08-30 16:03:45,487 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr20REQUIRES_VIOLATION (8 of 30 remaining) [2021-08-30 16:03:45,487 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr21REQUIRES_VIOLATION (7 of 30 remaining) [2021-08-30 16:03:45,487 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr22REQUIRES_VIOLATION (6 of 30 remaining) [2021-08-30 16:03:45,487 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr23REQUIRES_VIOLATION (5 of 30 remaining) [2021-08-30 16:03:45,487 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr24REQUIRES_VIOLATION (4 of 30 remaining) [2021-08-30 16:03:45,488 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr25REQUIRES_VIOLATION (3 of 30 remaining) [2021-08-30 16:03:45,489 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr26REQUIRES_VIOLATION (2 of 30 remaining) [2021-08-30 16:03:45,489 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr27REQUIRES_VIOLATION (1 of 30 remaining) [2021-08-30 16:03:45,489 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr28ASSERT_VIOLATIONMEMORY_LEAK (0 of 30 remaining) [2021-08-30 16:03:45,490 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-30 16:03:45,497 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-30 16:03:45,509 WARN L418 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2021-08-30 16:03:45,524 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 04:03:45 BoogieIcfgContainer [2021-08-30 16:03:45,524 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-30 16:03:45,525 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-30 16:03:45,525 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-30 16:03:45,525 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-30 16:03:45,526 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 04:03:44" (3/4) ... [2021-08-30 16:03:45,527 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-08-30 16:03:45,529 WARN L418 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2021-08-30 16:03:45,553 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-30 16:03:45,553 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-30 16:03:45,554 INFO L158 Benchmark]: Toolchain (without parser) took 2415.62ms. Allocated memory was 52.4MB in the beginning and 81.8MB in the end (delta: 29.4MB). Free memory was 28.2MB in the beginning and 58.1MB in the end (delta: -29.9MB). Peak memory consumption was 606.9kB. Max. memory is 16.1GB. [2021-08-30 16:03:45,555 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 52.4MB. Free memory was 34.6MB in the beginning and 34.6MB in the end (delta: 33.2kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-30 16:03:45,555 INFO L158 Benchmark]: CACSL2BoogieTranslator took 442.14ms. Allocated memory was 52.4MB in the beginning and 65.0MB in the end (delta: 12.6MB). Free memory was 28.1MB in the beginning and 40.9MB in the end (delta: -12.9MB). Peak memory consumption was 7.5MB. Max. memory is 16.1GB. [2021-08-30 16:03:45,555 INFO L158 Benchmark]: Boogie Preprocessor took 98.68ms. Allocated memory is still 65.0MB. Free memory was 40.9MB in the beginning and 38.2MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-08-30 16:03:45,556 INFO L158 Benchmark]: RCFGBuilder took 487.80ms. Allocated memory is still 65.0MB. Free memory was 38.1MB in the beginning and 29.7MB in the end (delta: 8.4MB). Peak memory consumption was 7.2MB. Max. memory is 16.1GB. [2021-08-30 16:03:45,556 INFO L158 Benchmark]: TraceAbstraction took 1338.62ms. Allocated memory was 65.0MB in the beginning and 81.8MB in the end (delta: 16.8MB). Free memory was 44.7MB in the beginning and 60.2MB in the end (delta: -15.5MB). Peak memory consumption was 26.8MB. Max. memory is 16.1GB. [2021-08-30 16:03:45,556 INFO L158 Benchmark]: Witness Printer took 28.67ms. Allocated memory is still 81.8MB. Free memory was 59.7MB in the beginning and 58.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-08-30 16:03:45,558 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 52.4MB. Free memory was 34.6MB in the beginning and 34.6MB in the end (delta: 33.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 442.14ms. Allocated memory was 52.4MB in the beginning and 65.0MB in the end (delta: 12.6MB). Free memory was 28.1MB in the beginning and 40.9MB in the end (delta: -12.9MB). Peak memory consumption was 7.5MB. Max. memory is 16.1GB. * Boogie Preprocessor took 98.68ms. Allocated memory is still 65.0MB. Free memory was 40.9MB in the beginning and 38.2MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 487.80ms. Allocated memory is still 65.0MB. Free memory was 38.1MB in the beginning and 29.7MB in the end (delta: 8.4MB). Peak memory consumption was 7.2MB. Max. memory is 16.1GB. * TraceAbstraction took 1338.62ms. Allocated memory was 65.0MB in the beginning and 81.8MB in the end (delta: 16.8MB). Free memory was 44.7MB in the beginning and 60.2MB in the end (delta: -15.5MB). Peak memory consumption was 26.8MB. Max. memory is 16.1GB. * Witness Printer took 28.67ms. Allocated memory is still 81.8MB. Free memory was 59.7MB in the beginning and 58.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.00ms ErrorAutomatonConstructionTimeTotal, 0.00ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.00ms ErrorAutomatonConstructionTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 531]: not all allocated memory was freed not all allocated memory was freed We found a FailurePath: [L532] int flag = 1; [L533] List a = (List) malloc(sizeof(struct node)); [L534] COND FALSE !(a == 0) VAL [a={-1:0}, flag=1] [L535] List t; [L536] List l1; [L537] List l2; [L538] List b; [L539] List u; [L540] List p = a; VAL [a={-1:0}, flag=1, p={-1:0}] [L541] COND FALSE !(__VERIFIER_nondet_int()) [L554] p->h = 3 VAL [a={-1:0}, flag=1, p={-1:0}] [L555] EXPR a->h VAL [a={-1:0}, a->h=3, flag=1, p={-1:0}] [L555] COND TRUE a->h == 3 [L555] return 0; VAL [\result=0, a={-1:0}, flag=1, p={-1:0}] - UnprovableResult [Line: 543]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 543]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 546]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 546]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 551]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 551]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 552]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 552]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 554]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 554]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 555]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 555]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 560]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 560]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 562]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 562]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 564]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 564]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 568]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 568]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 575]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 575]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 576]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 576]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 580]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 580]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 581]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 581]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 584]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 10 procedures, 103 locations, 30 error locations. Started 1 CEGAR loops. OverallTime: 1264.88ms, OverallIterations: 4, TraceHistogramMax: 1, EmptinessCheckTime: 11.42ms, AutomataDifference: 645.31ms, DeadEndRemovalTime: 0.00ms, HoareAnnotationTime: 0.00ms, InitialAbstractionConstructionTime: 9.50ms, PartialOrderReductionTime: 0.00ms, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 230 SdHoareTripleChecker+Valid, 497.47ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 230 mSDsluCounter, 29 SdHoareTripleChecker+Invalid, 402.02ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 59 mSDsCounter, 38 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 588 IncrementalHoareTripleChecker+Invalid, 626 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 38 mSolverCounterUnsat, 13 mSDtfsCounter, 588 mSolverCounterSat, 11.73ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 73.35ms Time, 0.00ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=85occurred in iteration=3, InterpolantAutomatonStates: 13, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.00ms DumpTime, AutomataMinimizationStatistics: 42.33ms AutomataMinimizationTime, 3 MinimizatonAttempts, 13 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 15.22ms SsaConstructionTime, 65.83ms SatisfiabilityAnalysisTime, 244.99ms InterpolantComputationTime, 46 NumberOfCodeBlocks, 46 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 29 ConstructedInterpolants, 0 QuantifiedInterpolants, 161 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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 incorrect! [2021-08-30 16:03:45,598 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...