./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/locks/test_locks_15-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 20ed64ec 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/locks/test_locks_15-1.c -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 04dfa849b43716e8587b0fc4953cadbe3968c4e3 ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/locks/test_locks_15-1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 04dfa849b43716e8587b0fc4953cadbe3968c4e3 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample --- Real Ultimate output --- This is Ultimate 0.2.1-dev-20ed64e [2021-08-27 07:51:09,820 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 07:51:09,823 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 07:51:09,871 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 07:51:09,871 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 07:51:09,874 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 07:51:09,876 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 07:51:09,881 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 07:51:09,883 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 07:51:09,887 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 07:51:09,888 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 07:51:09,892 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 07:51:09,892 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 07:51:09,895 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 07:51:09,896 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 07:51:09,902 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 07:51:09,903 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 07:51:09,904 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 07:51:09,906 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 07:51:09,912 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 07:51:09,913 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 07:51:09,914 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 07:51:09,916 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 07:51:09,916 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 07:51:09,922 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 07:51:09,923 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 07:51:09,923 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 07:51:09,924 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 07:51:09,925 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 07:51:09,926 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 07:51:09,926 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 07:51:09,927 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 07:51:09,928 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 07:51:09,929 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 07:51:09,930 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 07:51:09,930 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 07:51:09,931 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 07:51:09,931 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 07:51:09,931 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 07:51:09,932 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 07:51:09,933 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 07:51:09,937 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-08-27 07:51:09,973 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 07:51:09,974 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 07:51:09,975 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 07:51:09,975 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 07:51:09,977 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 07:51:09,977 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 07:51:09,977 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 07:51:09,977 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 07:51:09,977 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-27 07:51:09,977 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 07:51:09,978 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 07:51:09,978 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-27 07:51:09,978 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 07:51:09,979 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-08-27 07:51:09,979 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-08-27 07:51:09,979 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-08-27 07:51:09,979 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-27 07:51:09,979 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-08-27 07:51:09,979 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-27 07:51:09,979 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 07:51:09,979 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 07:51:09,980 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 07:51:09,980 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-27 07:51:09,980 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-27 07:51:09,980 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 07:51:09,980 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-27 07:51:09,980 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-27 07:51:09,980 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-27 07:51:09,981 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 07:51:09,981 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 04dfa849b43716e8587b0fc4953cadbe3968c4e3 [2021-08-27 07:51:10,297 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 07:51:10,315 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 07:51:10,318 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 07:51:10,319 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 07:51:10,320 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 07:51:10,321 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/locks/test_locks_15-1.c [2021-08-27 07:51:10,378 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ef3e4649c/4fd2fc1871ec465e8daabed91c6c5014/FLAG82667368f [2021-08-27 07:51:10,791 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 07:51:10,791 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/locks/test_locks_15-1.c [2021-08-27 07:51:10,797 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ef3e4649c/4fd2fc1871ec465e8daabed91c6c5014/FLAG82667368f [2021-08-27 07:51:11,188 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ef3e4649c/4fd2fc1871ec465e8daabed91c6c5014 [2021-08-27 07:51:11,191 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 07:51:11,193 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-27 07:51:11,196 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 07:51:11,197 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 07:51:11,200 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 07:51:11,200 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 07:51:11" (1/1) ... [2021-08-27 07:51:11,201 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15a3f623 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:51:11, skipping insertion in model container [2021-08-27 07:51:11,202 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 07:51:11" (1/1) ... [2021-08-27 07:51:11,209 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 07:51:11,234 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 07:51:11,367 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/locks/test_locks_15-1.c[5654,5667] [2021-08-27 07:51:11,370 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 07:51:11,377 INFO L203 MainTranslator]: Completed pre-run [2021-08-27 07:51:11,441 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/locks/test_locks_15-1.c[5654,5667] [2021-08-27 07:51:11,450 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 07:51:11,465 INFO L208 MainTranslator]: Completed translation [2021-08-27 07:51:11,466 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:51:11 WrapperNode [2021-08-27 07:51:11,466 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 07:51:11,469 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-27 07:51:11,470 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-27 07:51:11,470 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-27 07:51:11,479 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:51:11" (1/1) ... [2021-08-27 07:51:11,479 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:51:11" (1/1) ... [2021-08-27 07:51:11,495 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:51:11" (1/1) ... [2021-08-27 07:51:11,495 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:51:11" (1/1) ... [2021-08-27 07:51:11,509 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:51:11" (1/1) ... [2021-08-27 07:51:11,518 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:51:11" (1/1) ... [2021-08-27 07:51:11,522 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:51:11" (1/1) ... [2021-08-27 07:51:11,534 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-27 07:51:11,537 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-27 07:51:11,537 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-27 07:51:11,537 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-27 07:51:11,538 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:51:11" (1/1) ... [2021-08-27 07:51:11,544 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-27 07:51:11,551 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 07:51:11,566 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) [2021-08-27 07:51:11,593 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 [2021-08-27 07:51:11,611 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-08-27 07:51:11,612 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-27 07:51:11,612 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-08-27 07:51:11,613 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-08-27 07:51:11,613 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-08-27 07:51:11,614 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-08-27 07:51:11,614 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-08-27 07:51:11,614 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-27 07:51:11,614 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-08-27 07:51:11,615 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-08-27 07:51:11,615 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-08-27 07:51:11,615 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-27 07:51:11,615 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-27 07:51:11,615 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-27 07:51:11,615 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-08-27 07:51:11,616 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-27 07:51:12,052 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-27 07:51:12,053 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-08-27 07:51:12,054 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 07:51:12 BoogieIcfgContainer [2021-08-27 07:51:12,055 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-27 07:51:12,056 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-27 07:51:12,056 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-27 07:51:12,059 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-27 07:51:12,059 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 07:51:11" (1/3) ... [2021-08-27 07:51:12,060 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59585ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 07:51:12, skipping insertion in model container [2021-08-27 07:51:12,060 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:51:11" (2/3) ... [2021-08-27 07:51:12,061 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59585ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 07:51:12, skipping insertion in model container [2021-08-27 07:51:12,061 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 07:51:12" (3/3) ... [2021-08-27 07:51:12,062 INFO L111 eAbstractionObserver]: Analyzing ICFG test_locks_15-1.c [2021-08-27 07:51:12,067 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-27 07:51:12,067 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-08-27 07:51:12,101 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-27 07:51:12,107 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 [2021-08-27 07:51:12,107 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-08-27 07:51:12,120 INFO L276 IsEmpty]: Start isEmpty. Operand has 61 states, 54 states have (on average 1.9259259259259258) internal successors, (104), 56 states have internal predecessors, (104), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-08-27 07:51:12,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-08-27 07:51:12,126 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 07:51:12,126 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 07:51:12,127 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr1ENSURES_VIOLATIONMEMORY_LEAK === [mainErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr1ENSURES_VIOLATIONMEMORY_LEAK] === [2021-08-27 07:51:12,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 07:51:12,132 INFO L82 PathProgramCache]: Analyzing trace with hash 1791742257, now seen corresponding path program 1 times [2021-08-27 07:51:12,137 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 07:51:12,138 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807511820] [2021-08-27 07:51:12,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:51:12,139 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 07:51:12,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:51:12,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 07:51:12,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:51:12,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 07:51:12,451 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 07:51:12,451 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807511820] [2021-08-27 07:51:12,452 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [807511820] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 07:51:12,452 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 07:51:12,452 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 07:51:12,454 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178093665] [2021-08-27 07:51:12,467 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-27 07:51:12,469 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 07:51:12,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 07:51:12,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 07:51:12,485 INFO L87 Difference]: Start difference. First operand has 61 states, 54 states have (on average 1.9259259259259258) internal successors, (104), 56 states have internal predecessors, (104), 2 states have call successors, (2), 2 states have call predecessors, (2), 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 2.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2021-08-27 07:51:12,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 07:51:12,545 INFO L93 Difference]: Finished difference Result 60 states and 104 transitions. [2021-08-27 07:51:12,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 07:51:12,548 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 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 9 [2021-08-27 07:51:12,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 07:51:12,556 INFO L225 Difference]: With dead ends: 60 [2021-08-27 07:51:12,557 INFO L226 Difference]: Without dead ends: 55 [2021-08-27 07:51:12,558 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 62.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 07:51:12,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2021-08-27 07:51:12,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2021-08-27 07:51:12,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 51 states have (on average 1.8823529411764706) internal successors, (96), 51 states have internal predecessors, (96), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 07:51:12,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 99 transitions. [2021-08-27 07:51:12,597 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 99 transitions. Word has length 9 [2021-08-27 07:51:12,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 07:51:12,598 INFO L470 AbstractCegarLoop]: Abstraction has 55 states and 99 transitions. [2021-08-27 07:51:12,598 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2021-08-27 07:51:12,598 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 99 transitions. [2021-08-27 07:51:12,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-08-27 07:51:12,600 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 07:51:12,600 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 07:51:12,600 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-27 07:51:12,601 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr1ENSURES_VIOLATIONMEMORY_LEAK] === [2021-08-27 07:51:12,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 07:51:12,602 INFO L82 PathProgramCache]: Analyzing trace with hash -553613690, now seen corresponding path program 1 times [2021-08-27 07:51:12,602 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 07:51:12,603 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583933902] [2021-08-27 07:51:12,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:51:12,603 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 07:51:12,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:51:12,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 07:51:12,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:51:12,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 07:51:12,760 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 07:51:12,761 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583933902] [2021-08-27 07:51:12,761 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583933902] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 07:51:12,762 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 07:51:12,762 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-27 07:51:12,762 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490365079] [2021-08-27 07:51:12,764 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-27 07:51:12,764 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 07:51:12,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-27 07:51:12,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-27 07:51:12,766 INFO L87 Difference]: Start difference. First operand 55 states and 99 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 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) [2021-08-27 07:51:13,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 07:51:13,115 INFO L93 Difference]: Finished difference Result 103 states and 189 transitions. [2021-08-27 07:51:13,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-27 07:51:13,116 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 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 26 [2021-08-27 07:51:13,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 07:51:13,117 INFO L225 Difference]: With dead ends: 103 [2021-08-27 07:51:13,117 INFO L226 Difference]: Without dead ends: 103 [2021-08-27 07:51:13,118 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 99.5ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-27 07:51:13,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2021-08-27 07:51:13,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 71. [2021-08-27 07:51:13,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 67 states have (on average 1.8955223880597014) internal successors, (127), 67 states have internal predecessors, (127), 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) [2021-08-27 07:51:13,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 130 transitions. [2021-08-27 07:51:13,132 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 130 transitions. Word has length 26 [2021-08-27 07:51:13,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 07:51:13,133 INFO L470 AbstractCegarLoop]: Abstraction has 71 states and 130 transitions. [2021-08-27 07:51:13,133 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 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) [2021-08-27 07:51:13,133 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 130 transitions. [2021-08-27 07:51:13,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-08-27 07:51:13,134 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 07:51:13,134 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 07:51:13,135 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-27 07:51:13,135 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr1ENSURES_VIOLATIONMEMORY_LEAK] === [2021-08-27 07:51:13,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 07:51:13,135 INFO L82 PathProgramCache]: Analyzing trace with hash -553606498, now seen corresponding path program 1 times [2021-08-27 07:51:13,136 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 07:51:13,136 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445545421] [2021-08-27 07:51:13,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:51:13,136 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 07:51:13,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:51:13,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 07:51:13,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:51:13,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 07:51:13,264 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 07:51:13,264 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445545421] [2021-08-27 07:51:13,265 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445545421] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 07:51:13,265 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 07:51:13,265 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-27 07:51:13,265 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581184187] [2021-08-27 07:51:13,265 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-27 07:51:13,266 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 07:51:13,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-27 07:51:13,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-27 07:51:13,266 INFO L87 Difference]: Start difference. First operand 71 states and 130 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 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) [2021-08-27 07:51:13,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 07:51:13,565 INFO L93 Difference]: Finished difference Result 104 states and 189 transitions. [2021-08-27 07:51:13,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-27 07:51:13,566 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 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 26 [2021-08-27 07:51:13,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 07:51:13,568 INFO L225 Difference]: With dead ends: 104 [2021-08-27 07:51:13,568 INFO L226 Difference]: Without dead ends: 104 [2021-08-27 07:51:13,568 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 83.2ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-27 07:51:13,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2021-08-27 07:51:13,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 102. [2021-08-27 07:51:13,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 98 states have (on average 1.8877551020408163) internal successors, (185), 98 states have internal predecessors, (185), 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) [2021-08-27 07:51:13,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 188 transitions. [2021-08-27 07:51:13,578 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 188 transitions. Word has length 26 [2021-08-27 07:51:13,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 07:51:13,578 INFO L470 AbstractCegarLoop]: Abstraction has 102 states and 188 transitions. [2021-08-27 07:51:13,578 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 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) [2021-08-27 07:51:13,579 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 188 transitions. [2021-08-27 07:51:13,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-08-27 07:51:13,580 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 07:51:13,580 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 07:51:13,580 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-27 07:51:13,580 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr1ENSURES_VIOLATIONMEMORY_LEAK] === [2021-08-27 07:51:13,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 07:51:13,581 INFO L82 PathProgramCache]: Analyzing trace with hash 1747208900, now seen corresponding path program 1 times [2021-08-27 07:51:13,581 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 07:51:13,581 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977619129] [2021-08-27 07:51:13,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:51:13,582 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 07:51:13,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:51:13,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 07:51:13,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:51:13,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 07:51:13,664 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 07:51:13,664 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977619129] [2021-08-27 07:51:13,664 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977619129] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 07:51:13,664 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 07:51:13,664 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-27 07:51:13,665 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532440365] [2021-08-27 07:51:13,665 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-27 07:51:13,665 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 07:51:13,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-27 07:51:13,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-27 07:51:13,666 INFO L87 Difference]: Start difference. First operand 102 states and 188 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 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) [2021-08-27 07:51:13,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 07:51:13,873 INFO L93 Difference]: Finished difference Result 106 states and 189 transitions. [2021-08-27 07:51:13,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-27 07:51:13,874 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 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 26 [2021-08-27 07:51:13,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 07:51:13,878 INFO L225 Difference]: With dead ends: 106 [2021-08-27 07:51:13,879 INFO L226 Difference]: Without dead ends: 106 [2021-08-27 07:51:13,880 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 72.0ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-27 07:51:13,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2021-08-27 07:51:13,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 104. [2021-08-27 07:51:13,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 100 states have (on average 1.85) internal successors, (185), 100 states have internal predecessors, (185), 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) [2021-08-27 07:51:13,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 188 transitions. [2021-08-27 07:51:13,901 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 188 transitions. Word has length 26 [2021-08-27 07:51:13,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 07:51:13,902 INFO L470 AbstractCegarLoop]: Abstraction has 104 states and 188 transitions. [2021-08-27 07:51:13,902 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 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) [2021-08-27 07:51:13,902 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 188 transitions. [2021-08-27 07:51:13,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-08-27 07:51:13,903 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 07:51:13,904 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 07:51:13,904 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-27 07:51:13,904 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr1ENSURES_VIOLATIONMEMORY_LEAK] === [2021-08-27 07:51:13,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 07:51:13,905 INFO L82 PathProgramCache]: Analyzing trace with hash 1747216092, now seen corresponding path program 1 times [2021-08-27 07:51:13,905 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 07:51:13,906 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095588010] [2021-08-27 07:51:13,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:51:13,906 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 07:51:13,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 07:51:13,945 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 07:51:13,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 07:51:14,006 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 07:51:14,007 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-08-27 07:51:14,008 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr0ASSERT_VIOLATIONMEMORY_LEAK [2021-08-27 07:51:14,009 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr1ENSURES_VIOLATIONMEMORY_LEAK [2021-08-27 07:51:14,010 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-27 07:51:14,015 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-27 07:51:14,074 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 07:51:14 BoogieIcfgContainer [2021-08-27 07:51:14,074 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-27 07:51:14,075 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-27 07:51:14,075 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-27 07:51:14,075 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-27 07:51:14,076 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 07:51:12" (3/4) ... [2021-08-27 07:51:14,078 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-08-27 07:51:14,079 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-27 07:51:14,080 INFO L168 Benchmark]: Toolchain (without parser) took 2886.60 ms. Allocated memory was 62.9 MB in the beginning and 92.3 MB in the end (delta: 29.4 MB). Free memory was 43.5 MB in the beginning and 41.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 31.1 MB. Max. memory is 16.1 GB. [2021-08-27 07:51:14,081 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 62.9 MB. Free memory was 44.9 MB in the beginning and 44.8 MB in the end (delta: 84.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 07:51:14,081 INFO L168 Benchmark]: CACSL2BoogieTranslator took 271.24 ms. Allocated memory is still 62.9 MB. Free memory was 43.3 MB in the beginning and 45.8 MB in the end (delta: -2.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-08-27 07:51:14,082 INFO L168 Benchmark]: Boogie Preprocessor took 66.73 ms. Allocated memory is still 62.9 MB. Free memory was 45.8 MB in the beginning and 43.9 MB in the end (delta: 1.9 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 07:51:14,082 INFO L168 Benchmark]: RCFGBuilder took 518.18 ms. Allocated memory was 62.9 MB in the beginning and 75.5 MB in the end (delta: 12.6 MB). Free memory was 43.9 MB in the beginning and 48.2 MB in the end (delta: -4.3 MB). Peak memory consumption was 20.5 MB. Max. memory is 16.1 GB. [2021-08-27 07:51:14,083 INFO L168 Benchmark]: TraceAbstraction took 2017.97 ms. Allocated memory was 75.5 MB in the beginning and 92.3 MB in the end (delta: 16.8 MB). Free memory was 47.5 MB in the beginning and 42.1 MB in the end (delta: 5.4 MB). Peak memory consumption was 22.1 MB. Max. memory is 16.1 GB. [2021-08-27 07:51:14,083 INFO L168 Benchmark]: Witness Printer took 4.09 ms. Allocated memory is still 92.3 MB. Free memory was 42.1 MB in the beginning and 41.4 MB in the end (delta: 761.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 07:51:14,085 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 62.9 MB. Free memory was 44.9 MB in the beginning and 44.8 MB in the end (delta: 84.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 271.24 ms. Allocated memory is still 62.9 MB. Free memory was 43.3 MB in the beginning and 45.8 MB in the end (delta: -2.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 66.73 ms. Allocated memory is still 62.9 MB. Free memory was 45.8 MB in the beginning and 43.9 MB in the end (delta: 1.9 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 518.18 ms. Allocated memory was 62.9 MB in the beginning and 75.5 MB in the end (delta: 12.6 MB). Free memory was 43.9 MB in the beginning and 48.2 MB in the end (delta: -4.3 MB). Peak memory consumption was 20.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2017.97 ms. Allocated memory was 75.5 MB in the beginning and 92.3 MB in the end (delta: 16.8 MB). Free memory was 47.5 MB in the beginning and 42.1 MB in the end (delta: 5.4 MB). Peak memory consumption was 22.1 MB. Max. memory is 16.1 GB. * Witness Printer took 4.09 ms. Allocated memory is still 92.3 MB. Free memory was 42.1 MB in the beginning and 41.4 MB in the end (delta: 761.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 233]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 233. Possible FailurePath: [L8] int p1 = __VERIFIER_nondet_int(); [L9] int lk1; [L11] int p2 = __VERIFIER_nondet_int(); [L12] int lk2; [L14] int p3 = __VERIFIER_nondet_int(); [L15] int lk3; [L17] int p4 = __VERIFIER_nondet_int(); [L18] int lk4; [L20] int p5 = __VERIFIER_nondet_int(); [L21] int lk5; [L23] int p6 = __VERIFIER_nondet_int(); [L24] int lk6; [L26] int p7 = __VERIFIER_nondet_int(); [L27] int lk7; [L29] int p8 = __VERIFIER_nondet_int(); [L30] int lk8; [L32] int p9 = __VERIFIER_nondet_int(); [L33] int lk9; [L35] int p10 = __VERIFIER_nondet_int(); [L36] int lk10; [L38] int p11 = __VERIFIER_nondet_int(); [L39] int lk11; [L41] int p12 = __VERIFIER_nondet_int(); [L42] int lk12; [L44] int p13 = __VERIFIER_nondet_int(); [L45] int lk13; [L47] int p14 = __VERIFIER_nondet_int(); [L48] int lk14; [L50] int p15 = __VERIFIER_nondet_int(); [L51] int lk15; [L54] int cond; VAL [p1=0, p10=0, p11=1, p12=-1, p13=1, p14=1, p15=1, p2=0, p3=1, p4=1, p5=1, p6=1, p7=1, p8=1, p9=1] [L56] COND TRUE 1 [L57] cond = __VERIFIER_nondet_int() [L58] COND FALSE !(cond == 0) [L61] lk1 = 0 [L63] lk2 = 0 [L65] lk3 = 0 [L67] lk4 = 0 [L69] lk5 = 0 [L71] lk6 = 0 [L73] lk7 = 0 [L75] lk8 = 0 [L77] lk9 = 0 [L79] lk10 = 0 [L81] lk11 = 0 [L83] lk12 = 0 [L85] lk13 = 0 [L87] lk14 = 0 [L89] lk15 = 0 VAL [cond=1, lk1=0, lk10=0, lk11=0, lk12=0, lk13=0, lk14=0, lk15=0, lk2=0, lk3=0, lk4=0, lk5=0, lk6=0, lk7=0, lk8=0, lk9=0, p1=0, p10=0, p11=1, p12=-1, p13=1, p14=1, p15=1, p2=0, p3=1, p4=1, p5=1, p6=1, p7=1, p8=1, p9=1] [L93] COND FALSE !(p1 != 0) VAL [cond=1, lk1=0, lk10=0, lk11=0, lk12=0, lk13=0, lk14=0, lk15=0, lk2=0, lk3=0, lk4=0, lk5=0, lk6=0, lk7=0, lk8=0, lk9=0, p1=0, p10=0, p11=1, p12=-1, p13=1, p14=1, p15=1, p2=0, p3=1, p4=1, p5=1, p6=1, p7=1, p8=1, p9=1] [L97] COND FALSE !(p2 != 0) VAL [cond=1, lk1=0, lk10=0, lk11=0, lk12=0, lk13=0, lk14=0, lk15=0, lk2=0, lk3=0, lk4=0, lk5=0, lk6=0, lk7=0, lk8=0, lk9=0, p1=0, p10=0, p11=1, p12=-1, p13=1, p14=1, p15=1, p2=0, p3=1, p4=1, p5=1, p6=1, p7=1, p8=1, p9=1] [L101] COND TRUE p3 != 0 [L102] lk3 = 1 VAL [cond=1, lk1=0, lk10=0, lk11=0, lk12=0, lk13=0, lk14=0, lk15=0, lk2=0, lk3=1, lk4=0, lk5=0, lk6=0, lk7=0, lk8=0, lk9=0, p1=0, p10=0, p11=1, p12=-1, p13=1, p14=1, p15=1, p2=0, p3=1, p4=1, p5=1, p6=1, p7=1, p8=1, p9=1] [L105] COND TRUE p4 != 0 [L106] lk4 = 1 VAL [cond=1, lk1=0, lk10=0, lk11=0, lk12=0, lk13=0, lk14=0, lk15=0, lk2=0, lk3=1, lk4=1, lk5=0, lk6=0, lk7=0, lk8=0, lk9=0, p1=0, p10=0, p11=1, p12=-1, p13=1, p14=1, p15=1, p2=0, p3=1, p4=1, p5=1, p6=1, p7=1, p8=1, p9=1] [L109] COND TRUE p5 != 0 [L110] lk5 = 1 VAL [cond=1, lk1=0, lk10=0, lk11=0, lk12=0, lk13=0, lk14=0, lk15=0, lk2=0, lk3=1, lk4=1, lk5=1, lk6=0, lk7=0, lk8=0, lk9=0, p1=0, p10=0, p11=1, p12=-1, p13=1, p14=1, p15=1, p2=0, p3=1, p4=1, p5=1, p6=1, p7=1, p8=1, p9=1] [L113] COND TRUE p6 != 0 [L114] lk6 = 1 VAL [cond=1, lk1=0, lk10=0, lk11=0, lk12=0, lk13=0, lk14=0, lk15=0, lk2=0, lk3=1, lk4=1, lk5=1, lk6=1, lk7=0, lk8=0, lk9=0, p1=0, p10=0, p11=1, p12=-1, p13=1, p14=1, p15=1, p2=0, p3=1, p4=1, p5=1, p6=1, p7=1, p8=1, p9=1] [L117] COND TRUE p7 != 0 [L118] lk7 = 1 VAL [cond=1, lk1=0, lk10=0, lk11=0, lk12=0, lk13=0, lk14=0, lk15=0, lk2=0, lk3=1, lk4=1, lk5=1, lk6=1, lk7=1, lk8=0, lk9=0, p1=0, p10=0, p11=1, p12=-1, p13=1, p14=1, p15=1, p2=0, p3=1, p4=1, p5=1, p6=1, p7=1, p8=1, p9=1] [L121] COND TRUE p8 != 0 [L122] lk8 = 1 VAL [cond=1, lk1=0, lk10=0, lk11=0, lk12=0, lk13=0, lk14=0, lk15=0, lk2=0, lk3=1, lk4=1, lk5=1, lk6=1, lk7=1, lk8=1, lk9=0, p1=0, p10=0, p11=1, p12=-1, p13=1, p14=1, p15=1, p2=0, p3=1, p4=1, p5=1, p6=1, p7=1, p8=1, p9=1] [L125] COND TRUE p9 != 0 [L126] lk9 = 1 VAL [cond=1, lk1=0, lk10=0, lk11=0, lk12=0, lk13=0, lk14=0, lk15=0, lk2=0, lk3=1, lk4=1, lk5=1, lk6=1, lk7=1, lk8=1, lk9=1, p1=0, p10=0, p11=1, p12=-1, p13=1, p14=1, p15=1, p2=0, p3=1, p4=1, p5=1, p6=1, p7=1, p8=1, p9=1] [L129] COND FALSE !(p10 != 0) VAL [cond=1, lk1=0, lk10=0, lk11=0, lk12=0, lk13=0, lk14=0, lk15=0, lk2=0, lk3=1, lk4=1, lk5=1, lk6=1, lk7=1, lk8=1, lk9=1, p1=0, p10=0, p11=1, p12=-1, p13=1, p14=1, p15=1, p2=0, p3=1, p4=1, p5=1, p6=1, p7=1, p8=1, p9=1] [L133] COND TRUE p11 != 0 [L134] lk11 = 1 VAL [cond=1, lk1=0, lk10=0, lk11=1, lk12=0, lk13=0, lk14=0, lk15=0, lk2=0, lk3=1, lk4=1, lk5=1, lk6=1, lk7=1, lk8=1, lk9=1, p1=0, p10=0, p11=1, p12=-1, p13=1, p14=1, p15=1, p2=0, p3=1, p4=1, p5=1, p6=1, p7=1, p8=1, p9=1] [L137] COND TRUE p12 != 0 [L138] lk12 = 1 VAL [cond=1, lk1=0, lk10=0, lk11=1, lk12=1, lk13=0, lk14=0, lk15=0, lk2=0, lk3=1, lk4=1, lk5=1, lk6=1, lk7=1, lk8=1, lk9=1, p1=0, p10=0, p11=1, p12=-1, p13=1, p14=1, p15=1, p2=0, p3=1, p4=1, p5=1, p6=1, p7=1, p8=1, p9=1] [L141] COND TRUE p13 != 0 [L142] lk13 = 1 VAL [cond=1, lk1=0, lk10=0, lk11=1, lk12=1, lk13=1, lk14=0, lk15=0, lk2=0, lk3=1, lk4=1, lk5=1, lk6=1, lk7=1, lk8=1, lk9=1, p1=0, p10=0, p11=1, p12=-1, p13=1, p14=1, p15=1, p2=0, p3=1, p4=1, p5=1, p6=1, p7=1, p8=1, p9=1] [L145] COND TRUE p14 != 0 [L146] lk14 = 1 VAL [cond=1, lk1=0, lk10=0, lk11=1, lk12=1, lk13=1, lk14=1, lk15=0, lk2=0, lk3=1, lk4=1, lk5=1, lk6=1, lk7=1, lk8=1, lk9=1, p1=0, p10=0, p11=1, p12=-1, p13=1, p14=1, p15=1, p2=0, p3=1, p4=1, p5=1, p6=1, p7=1, p8=1, p9=1] [L149] COND TRUE p15 != 0 [L150] lk15 = 1 VAL [cond=1, lk1=0, lk10=0, lk11=1, lk12=1, lk13=1, lk14=1, lk15=1, lk2=0, lk3=1, lk4=1, lk5=1, lk6=1, lk7=1, lk8=1, lk9=1, p1=0, p10=0, p11=1, p12=-1, p13=1, p14=1, p15=1, p2=0, p3=1, p4=1, p5=1, p6=1, p7=1, p8=1, p9=1] [L155] COND FALSE !(p1 != 0) VAL [cond=1, lk1=0, lk10=0, lk11=1, lk12=1, lk13=1, lk14=1, lk15=1, lk2=0, lk3=1, lk4=1, lk5=1, lk6=1, lk7=1, lk8=1, lk9=1, p1=0, p10=0, p11=1, p12=-1, p13=1, p14=1, p15=1, p2=0, p3=1, p4=1, p5=1, p6=1, p7=1, p8=1, p9=1] [L160] COND FALSE !(p2 != 0) VAL [cond=1, lk1=0, lk10=0, lk11=1, lk12=1, lk13=1, lk14=1, lk15=1, lk2=0, lk3=1, lk4=1, lk5=1, lk6=1, lk7=1, lk8=1, lk9=1, p1=0, p10=0, p11=1, p12=-1, p13=1, p14=1, p15=1, p2=0, p3=1, p4=1, p5=1, p6=1, p7=1, p8=1, p9=1] [L233] reach_error() VAL [cond=1, lk1=0, lk10=0, lk11=1, lk12=1, lk13=1, lk14=1, lk15=1, lk2=0, lk3=1, lk4=1, lk5=1, lk6=1, lk7=1, lk8=1, lk9=1, p1=0, p10=0, p11=1, p12=-1, p13=1, p14=1, p15=1, p2=0, p3=1, p4=1, p5=1, p6=1, p7=1, p8=1, p9=1] - UnprovableResult [Line: 6]: 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 4 procedures, 64 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 1913.9ms, OverallIterations: 5, TraceHistogramMax: 1, EmptinessCheckTime: 13.4ms, AutomataDifference: 959.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 9.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 483 SDtfs, 775 SDslu, 21 SDs, 0 SdLazy, 292 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 547.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 316.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=104occurred in iteration=4, InterpolantAutomatonStates: 15, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 71.4ms AutomataMinimizationTime, 4 MinimizatonAttempts, 36 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 32.5ms SsaConstructionTime, 130.6ms SatisfiabilityAnalysisTime, 484.2ms InterpolantComputationTime, 113 NumberOfCodeBlocks, 113 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 83 ConstructedInterpolants, 0 QuantifiedInterpolants, 310 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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 could not prove your program: unable to determine feasibility of some traces [2021-08-27 07:51:14,117 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-20ed64e [2021-08-27 07:51:16,000 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 07:51:16,003 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 07:51:16,053 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 07:51:16,054 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 07:51:16,057 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 07:51:16,059 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 07:51:16,063 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 07:51:16,066 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 07:51:16,070 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 07:51:16,071 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 07:51:16,075 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 07:51:16,075 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 07:51:16,078 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 07:51:16,079 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 07:51:16,083 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 07:51:16,084 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 07:51:16,084 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 07:51:16,086 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 07:51:16,093 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 07:51:16,094 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 07:51:16,095 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 07:51:16,097 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 07:51:16,098 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 07:51:16,104 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 07:51:16,104 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 07:51:16,105 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 07:51:16,106 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 07:51:16,107 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 07:51:16,107 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 07:51:16,108 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 07:51:16,108 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 07:51:16,110 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 07:51:16,111 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 07:51:16,112 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 07:51:16,112 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 07:51:16,113 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 07:51:16,113 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 07:51:16,113 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 07:51:16,115 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 07:51:16,115 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 07:51:16,116 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-08-27 07:51:16,155 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 07:51:16,156 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 07:51:16,157 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 07:51:16,157 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 07:51:16,159 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 07:51:16,159 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 07:51:16,160 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 07:51:16,160 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 07:51:16,160 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-27 07:51:16,160 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 07:51:16,161 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 07:51:16,161 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-27 07:51:16,162 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 07:51:16,162 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-08-27 07:51:16,162 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-08-27 07:51:16,162 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-08-27 07:51:16,162 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-27 07:51:16,162 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-08-27 07:51:16,163 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-08-27 07:51:16,163 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-08-27 07:51:16,163 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-27 07:51:16,163 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 07:51:16,163 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 07:51:16,163 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 07:51:16,164 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-27 07:51:16,164 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-27 07:51:16,164 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 07:51:16,164 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-27 07:51:16,164 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-08-27 07:51:16,165 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-08-27 07:51:16,165 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 07:51:16,165 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-08-27 07:51:16,165 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 04dfa849b43716e8587b0fc4953cadbe3968c4e3 [2021-08-27 07:51:16,501 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 07:51:16,528 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 07:51:16,530 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 07:51:16,531 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 07:51:16,532 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 07:51:16,533 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/locks/test_locks_15-1.c [2021-08-27 07:51:16,587 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8755ccda5/decbca8db5bb461d9fc5a527c203cd0f/FLAG2b265850c [2021-08-27 07:51:16,996 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 07:51:16,997 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/locks/test_locks_15-1.c [2021-08-27 07:51:17,008 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8755ccda5/decbca8db5bb461d9fc5a527c203cd0f/FLAG2b265850c [2021-08-27 07:51:17,389 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8755ccda5/decbca8db5bb461d9fc5a527c203cd0f [2021-08-27 07:51:17,391 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 07:51:17,392 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-27 07:51:17,396 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 07:51:17,396 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 07:51:17,400 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 07:51:17,401 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 07:51:17" (1/1) ... [2021-08-27 07:51:17,403 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6329fc6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:51:17, skipping insertion in model container [2021-08-27 07:51:17,403 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 07:51:17" (1/1) ... [2021-08-27 07:51:17,413 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 07:51:17,431 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 07:51:17,573 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/locks/test_locks_15-1.c[5654,5667] [2021-08-27 07:51:17,576 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 07:51:17,596 INFO L203 MainTranslator]: Completed pre-run [2021-08-27 07:51:17,655 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/locks/test_locks_15-1.c[5654,5667] [2021-08-27 07:51:17,666 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 07:51:17,681 INFO L208 MainTranslator]: Completed translation [2021-08-27 07:51:17,682 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:51:17 WrapperNode [2021-08-27 07:51:17,683 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 07:51:17,685 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-27 07:51:17,685 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-27 07:51:17,685 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-27 07:51:17,695 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:51:17" (1/1) ... [2021-08-27 07:51:17,695 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:51:17" (1/1) ... [2021-08-27 07:51:17,710 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:51:17" (1/1) ... [2021-08-27 07:51:17,711 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:51:17" (1/1) ... [2021-08-27 07:51:17,726 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:51:17" (1/1) ... [2021-08-27 07:51:17,739 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:51:17" (1/1) ... [2021-08-27 07:51:17,746 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:51:17" (1/1) ... [2021-08-27 07:51:17,752 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-27 07:51:17,754 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-27 07:51:17,755 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-27 07:51:17,755 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-27 07:51:17,756 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:51:17" (1/1) ... [2021-08-27 07:51:17,762 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-27 07:51:17,769 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 07:51:17,786 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) [2021-08-27 07:51:17,812 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 [2021-08-27 07:51:17,835 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-08-27 07:51:17,835 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-27 07:51:17,836 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-08-27 07:51:17,837 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-08-27 07:51:17,837 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-08-27 07:51:17,837 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-08-27 07:51:17,839 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-08-27 07:51:17,839 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-27 07:51:17,839 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-08-27 07:51:17,839 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-08-27 07:51:17,839 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-08-27 07:51:17,839 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-08-27 07:51:17,840 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-27 07:51:17,840 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-08-27 07:51:17,840 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-08-27 07:51:17,840 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-27 07:51:18,386 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-27 07:51:18,387 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-08-27 07:51:18,389 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 07:51:18 BoogieIcfgContainer [2021-08-27 07:51:18,389 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-27 07:51:18,390 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-27 07:51:18,390 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-27 07:51:18,393 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-27 07:51:18,393 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 07:51:17" (1/3) ... [2021-08-27 07:51:18,394 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7907a9fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 07:51:18, skipping insertion in model container [2021-08-27 07:51:18,394 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:51:17" (2/3) ... [2021-08-27 07:51:18,395 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7907a9fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 07:51:18, skipping insertion in model container [2021-08-27 07:51:18,395 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 07:51:18" (3/3) ... [2021-08-27 07:51:18,396 INFO L111 eAbstractionObserver]: Analyzing ICFG test_locks_15-1.c [2021-08-27 07:51:18,400 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-27 07:51:18,400 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-08-27 07:51:18,447 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-27 07:51:18,452 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 [2021-08-27 07:51:18,453 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-08-27 07:51:18,469 INFO L276 IsEmpty]: Start isEmpty. Operand has 61 states, 54 states have (on average 1.9259259259259258) internal successors, (104), 56 states have internal predecessors, (104), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-08-27 07:51:18,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-08-27 07:51:18,474 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 07:51:18,477 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 07:51:18,478 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr1ENSURES_VIOLATIONMEMORY_LEAK === [mainErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr1ENSURES_VIOLATIONMEMORY_LEAK] === [2021-08-27 07:51:18,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 07:51:18,483 INFO L82 PathProgramCache]: Analyzing trace with hash 1791742257, now seen corresponding path program 1 times [2021-08-27 07:51:18,491 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 07:51:18,492 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2116693278] [2021-08-27 07:51:18,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:51:18,493 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 07:51:18,493 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 07:51:18,494 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-27 07:51:18,495 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-08-27 07:51:18,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:51:18,601 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 1 conjunts are in the unsatisfiable core [2021-08-27 07:51:18,606 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 07:51:18,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 07:51:18,692 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 07:51:18,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 07:51:18,786 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 07:51:18,786 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2116693278] [2021-08-27 07:51:18,786 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2116693278] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-27 07:51:18,787 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-27 07:51:18,787 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-08-27 07:51:18,789 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012004722] [2021-08-27 07:51:18,793 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-08-27 07:51:18,794 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 07:51:18,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-08-27 07:51:18,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-27 07:51:18,811 INFO L87 Difference]: Start difference. First operand has 61 states, 54 states have (on average 1.9259259259259258) internal successors, (104), 56 states have internal predecessors, (104), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 07:51:18,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 07:51:18,831 INFO L93 Difference]: Finished difference Result 60 states and 104 transitions. [2021-08-27 07:51:18,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-27 07:51:18,832 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 9 [2021-08-27 07:51:18,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 07:51:18,840 INFO L225 Difference]: With dead ends: 60 [2021-08-27 07:51:18,841 INFO L226 Difference]: Without dead ends: 55 [2021-08-27 07:51:18,842 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-27 07:51:18,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2021-08-27 07:51:18,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2021-08-27 07:51:18,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 51 states have (on average 1.8823529411764706) internal successors, (96), 51 states have internal predecessors, (96), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 07:51:18,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 99 transitions. [2021-08-27 07:51:18,882 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 99 transitions. Word has length 9 [2021-08-27 07:51:18,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 07:51:18,883 INFO L470 AbstractCegarLoop]: Abstraction has 55 states and 99 transitions. [2021-08-27 07:51:18,883 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 07:51:18,883 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 99 transitions. [2021-08-27 07:51:18,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-08-27 07:51:18,884 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 07:51:18,884 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 07:51:18,902 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-08-27 07:51:19,103 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-27 07:51:19,104 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr1ENSURES_VIOLATIONMEMORY_LEAK] === [2021-08-27 07:51:19,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 07:51:19,105 INFO L82 PathProgramCache]: Analyzing trace with hash -553613690, now seen corresponding path program 1 times [2021-08-27 07:51:19,105 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 07:51:19,106 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [278084838] [2021-08-27 07:51:19,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:51:19,106 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 07:51:19,106 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 07:51:19,107 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-27 07:51:19,109 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-08-27 07:51:19,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:51:19,283 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-27 07:51:19,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 07:51:19,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 07:51:19,489 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 07:51:19,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 07:51:19,675 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 07:51:19,675 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [278084838] [2021-08-27 07:51:19,675 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [278084838] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-27 07:51:19,676 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-27 07:51:19,676 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-08-27 07:51:19,676 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46727499] [2021-08-27 07:51:19,677 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-27 07:51:19,677 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 07:51:19,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 07:51:19,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 07:51:19,679 INFO L87 Difference]: Start difference. First operand 55 states and 99 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 07:51:19,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 07:51:19,709 INFO L93 Difference]: Finished difference Result 103 states and 189 transitions. [2021-08-27 07:51:19,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 07:51:19,710 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 26 [2021-08-27 07:51:19,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 07:51:19,712 INFO L225 Difference]: With dead ends: 103 [2021-08-27 07:51:19,712 INFO L226 Difference]: Without dead ends: 103 [2021-08-27 07:51:19,713 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 07:51:19,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2021-08-27 07:51:19,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 71. [2021-08-27 07:51:19,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 67 states have (on average 1.8955223880597014) internal successors, (127), 67 states have internal predecessors, (127), 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) [2021-08-27 07:51:19,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 130 transitions. [2021-08-27 07:51:19,721 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 130 transitions. Word has length 26 [2021-08-27 07:51:19,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 07:51:19,722 INFO L470 AbstractCegarLoop]: Abstraction has 71 states and 130 transitions. [2021-08-27 07:51:19,722 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 07:51:19,722 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 130 transitions. [2021-08-27 07:51:19,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-08-27 07:51:19,723 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 07:51:19,723 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 07:51:19,733 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-08-27 07:51:19,929 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-27 07:51:19,930 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr1ENSURES_VIOLATIONMEMORY_LEAK] === [2021-08-27 07:51:19,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 07:51:19,931 INFO L82 PathProgramCache]: Analyzing trace with hash -553606498, now seen corresponding path program 1 times [2021-08-27 07:51:19,931 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 07:51:19,931 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1225692467] [2021-08-27 07:51:19,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:51:19,932 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 07:51:19,932 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 07:51:19,933 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-27 07:51:19,934 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-08-27 07:51:20,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:51:20,082 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-27 07:51:20,084 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 07:51:20,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 07:51:20,233 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 07:51:20,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 07:51:20,331 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 07:51:20,332 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1225692467] [2021-08-27 07:51:20,332 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1225692467] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-27 07:51:20,332 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-27 07:51:20,332 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-08-27 07:51:20,332 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061776974] [2021-08-27 07:51:20,333 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-27 07:51:20,333 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 07:51:20,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 07:51:20,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 07:51:20,334 INFO L87 Difference]: Start difference. First operand 71 states and 130 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 07:51:20,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 07:51:20,357 INFO L93 Difference]: Finished difference Result 104 states and 189 transitions. [2021-08-27 07:51:20,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 07:51:20,357 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 26 [2021-08-27 07:51:20,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 07:51:20,358 INFO L225 Difference]: With dead ends: 104 [2021-08-27 07:51:20,359 INFO L226 Difference]: Without dead ends: 104 [2021-08-27 07:51:20,359 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 07:51:20,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2021-08-27 07:51:20,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 102. [2021-08-27 07:51:20,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 98 states have (on average 1.8877551020408163) internal successors, (185), 98 states have internal predecessors, (185), 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) [2021-08-27 07:51:20,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 188 transitions. [2021-08-27 07:51:20,371 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 188 transitions. Word has length 26 [2021-08-27 07:51:20,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 07:51:20,371 INFO L470 AbstractCegarLoop]: Abstraction has 102 states and 188 transitions. [2021-08-27 07:51:20,372 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 07:51:20,372 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 188 transitions. [2021-08-27 07:51:20,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-08-27 07:51:20,373 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 07:51:20,373 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 07:51:20,385 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-08-27 07:51:20,581 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-27 07:51:20,581 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr1ENSURES_VIOLATIONMEMORY_LEAK] === [2021-08-27 07:51:20,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 07:51:20,582 INFO L82 PathProgramCache]: Analyzing trace with hash 1747208900, now seen corresponding path program 1 times [2021-08-27 07:51:20,582 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 07:51:20,583 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2121583085] [2021-08-27 07:51:20,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:51:20,583 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 07:51:20,583 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 07:51:20,584 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-27 07:51:20,590 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-08-27 07:51:20,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:51:20,701 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-27 07:51:20,703 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 07:51:20,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 07:51:20,811 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 07:51:20,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 07:51:20,916 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 07:51:20,917 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2121583085] [2021-08-27 07:51:20,917 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2121583085] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-27 07:51:20,917 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-27 07:51:20,917 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-08-27 07:51:20,918 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577460990] [2021-08-27 07:51:20,918 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-27 07:51:20,918 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 07:51:20,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 07:51:20,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 07:51:20,920 INFO L87 Difference]: Start difference. First operand 102 states and 188 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 07:51:20,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 07:51:20,939 INFO L93 Difference]: Finished difference Result 106 states and 189 transitions. [2021-08-27 07:51:20,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 07:51:20,940 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 26 [2021-08-27 07:51:20,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 07:51:20,941 INFO L225 Difference]: With dead ends: 106 [2021-08-27 07:51:20,941 INFO L226 Difference]: Without dead ends: 106 [2021-08-27 07:51:20,941 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 07:51:20,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2021-08-27 07:51:20,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 104. [2021-08-27 07:51:20,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 100 states have (on average 1.85) internal successors, (185), 100 states have internal predecessors, (185), 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) [2021-08-27 07:51:20,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 188 transitions. [2021-08-27 07:51:20,962 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 188 transitions. Word has length 26 [2021-08-27 07:51:20,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 07:51:20,963 INFO L470 AbstractCegarLoop]: Abstraction has 104 states and 188 transitions. [2021-08-27 07:51:20,963 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 07:51:20,963 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 188 transitions. [2021-08-27 07:51:20,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-08-27 07:51:20,964 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 07:51:20,964 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 07:51:20,972 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-08-27 07:51:21,164 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-27 07:51:21,165 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr1ENSURES_VIOLATIONMEMORY_LEAK] === [2021-08-27 07:51:21,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 07:51:21,165 INFO L82 PathProgramCache]: Analyzing trace with hash 1747216092, now seen corresponding path program 1 times [2021-08-27 07:51:21,166 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 07:51:21,166 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [522753429] [2021-08-27 07:51:21,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:51:21,166 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 07:51:21,166 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 07:51:21,167 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-27 07:51:21,168 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-08-27 07:51:21,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 07:51:21,319 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 07:51:21,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 07:51:21,415 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-08-27 07:51:21,428 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-08-27 07:51:21,430 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr0ASSERT_VIOLATIONMEMORY_LEAK [2021-08-27 07:51:21,431 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr1ENSURES_VIOLATIONMEMORY_LEAK [2021-08-27 07:51:21,457 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-08-27 07:51:21,632 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-27 07:51:21,638 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-27 07:51:21,686 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 07:51:21 BoogieIcfgContainer [2021-08-27 07:51:21,686 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-27 07:51:21,687 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-27 07:51:21,687 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-27 07:51:21,687 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-27 07:51:21,688 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 07:51:18" (3/4) ... [2021-08-27 07:51:21,690 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-08-27 07:51:21,691 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-27 07:51:21,692 INFO L168 Benchmark]: Toolchain (without parser) took 4299.18 ms. Allocated memory was 54.5 MB in the beginning and 98.6 MB in the end (delta: 44.0 MB). Free memory was 32.0 MB in the beginning and 74.0 MB in the end (delta: -42.0 MB). Peak memory consumption was 716.5 kB. Max. memory is 16.1 GB. [2021-08-27 07:51:21,693 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 54.5 MB. Free memory was 37.0 MB in the beginning and 36.9 MB in the end (delta: 36.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 07:51:21,693 INFO L168 Benchmark]: CACSL2BoogieTranslator took 287.49 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 31.8 MB in the beginning and 49.8 MB in the end (delta: -18.0 MB). Peak memory consumption was 7.4 MB. Max. memory is 16.1 GB. [2021-08-27 07:51:21,694 INFO L168 Benchmark]: Boogie Preprocessor took 68.54 ms. Allocated memory is still 67.1 MB. Free memory was 49.8 MB in the beginning and 47.8 MB in the end (delta: 2.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 07:51:21,694 INFO L168 Benchmark]: RCFGBuilder took 635.04 ms. Allocated memory is still 67.1 MB. Free memory was 47.8 MB in the beginning and 36.9 MB in the end (delta: 10.9 MB). Peak memory consumption was 18.4 MB. Max. memory is 16.1 GB. [2021-08-27 07:51:21,694 INFO L168 Benchmark]: TraceAbstraction took 3296.15 ms. Allocated memory was 67.1 MB in the beginning and 98.6 MB in the end (delta: 31.5 MB). Free memory was 36.4 MB in the beginning and 74.0 MB in the end (delta: -37.6 MB). Peak memory consumption was 26.4 MB. Max. memory is 16.1 GB. [2021-08-27 07:51:21,695 INFO L168 Benchmark]: Witness Printer took 3.71 ms. Allocated memory is still 98.6 MB. Free memory is still 74.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 07:51:21,697 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 54.5 MB. Free memory was 37.0 MB in the beginning and 36.9 MB in the end (delta: 36.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 287.49 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 31.8 MB in the beginning and 49.8 MB in the end (delta: -18.0 MB). Peak memory consumption was 7.4 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 68.54 ms. Allocated memory is still 67.1 MB. Free memory was 49.8 MB in the beginning and 47.8 MB in the end (delta: 2.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 635.04 ms. Allocated memory is still 67.1 MB. Free memory was 47.8 MB in the beginning and 36.9 MB in the end (delta: 10.9 MB). Peak memory consumption was 18.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3296.15 ms. Allocated memory was 67.1 MB in the beginning and 98.6 MB in the end (delta: 31.5 MB). Free memory was 36.4 MB in the beginning and 74.0 MB in the end (delta: -37.6 MB). Peak memory consumption was 26.4 MB. Max. memory is 16.1 GB. * Witness Printer took 3.71 ms. Allocated memory is still 98.6 MB. Free memory is still 74.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 233]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 233. Possible FailurePath: [L8] int p1 = __VERIFIER_nondet_int(); [L9] int lk1; [L11] int p2 = __VERIFIER_nondet_int(); [L12] int lk2; [L14] int p3 = __VERIFIER_nondet_int(); [L15] int lk3; [L17] int p4 = __VERIFIER_nondet_int(); [L18] int lk4; [L20] int p5 = __VERIFIER_nondet_int(); [L21] int lk5; [L23] int p6 = __VERIFIER_nondet_int(); [L24] int lk6; [L26] int p7 = __VERIFIER_nondet_int(); [L27] int lk7; [L29] int p8 = __VERIFIER_nondet_int(); [L30] int lk8; [L32] int p9 = __VERIFIER_nondet_int(); [L33] int lk9; [L35] int p10 = __VERIFIER_nondet_int(); [L36] int lk10; [L38] int p11 = __VERIFIER_nondet_int(); [L39] int lk11; [L41] int p12 = __VERIFIER_nondet_int(); [L42] int lk12; [L44] int p13 = __VERIFIER_nondet_int(); [L45] int lk13; [L47] int p14 = __VERIFIER_nondet_int(); [L48] int lk14; [L50] int p15 = __VERIFIER_nondet_int(); [L51] int lk15; [L54] int cond; VAL [p1=0, p10=0, p11=2147483648, p12=2147483648, p13=2147483648, p14=2147483648, p15=2147483648, p2=0, p3=2147483648, p4=2147483648, p5=2147483648, p6=2147483648, p7=2147483648, p8=2147483648, p9=2147483648] [L56] COND TRUE 1 [L57] cond = __VERIFIER_nondet_int() [L58] COND FALSE !(cond == 0) [L61] lk1 = 0 [L63] lk2 = 0 [L65] lk3 = 0 [L67] lk4 = 0 [L69] lk5 = 0 [L71] lk6 = 0 [L73] lk7 = 0 [L75] lk8 = 0 [L77] lk9 = 0 [L79] lk10 = 0 [L81] lk11 = 0 [L83] lk12 = 0 [L85] lk13 = 0 [L87] lk14 = 0 [L89] lk15 = 0 VAL [cond=2147483648, lk1=0, lk10=0, lk11=0, lk12=0, lk13=0, lk14=0, lk15=0, lk2=0, lk3=0, lk4=0, lk5=0, lk6=0, lk7=0, lk8=0, lk9=0, p1=0, p10=0, p11=2147483648, p12=2147483648, p13=2147483648, p14=2147483648, p15=2147483648, p2=0, p3=2147483648, p4=2147483648, p5=2147483648, p6=2147483648, p7=2147483648, p8=2147483648, p9=2147483648] [L93] COND FALSE !(p1 != 0) VAL [cond=2147483648, lk1=0, lk10=0, lk11=0, lk12=0, lk13=0, lk14=0, lk15=0, lk2=0, lk3=0, lk4=0, lk5=0, lk6=0, lk7=0, lk8=0, lk9=0, p1=0, p10=0, p11=2147483648, p12=2147483648, p13=2147483648, p14=2147483648, p15=2147483648, p2=0, p3=2147483648, p4=2147483648, p5=2147483648, p6=2147483648, p7=2147483648, p8=2147483648, p9=2147483648] [L97] COND FALSE !(p2 != 0) VAL [cond=2147483648, lk1=0, lk10=0, lk11=0, lk12=0, lk13=0, lk14=0, lk15=0, lk2=0, lk3=0, lk4=0, lk5=0, lk6=0, lk7=0, lk8=0, lk9=0, p1=0, p10=0, p11=2147483648, p12=2147483648, p13=2147483648, p14=2147483648, p15=2147483648, p2=0, p3=2147483648, p4=2147483648, p5=2147483648, p6=2147483648, p7=2147483648, p8=2147483648, p9=2147483648] [L101] COND TRUE p3 != 0 [L102] lk3 = 1 VAL [cond=2147483648, lk1=0, lk10=0, lk11=0, lk12=0, lk13=0, lk14=0, lk15=0, lk2=0, lk3=1, lk4=0, lk5=0, lk6=0, lk7=0, lk8=0, lk9=0, p1=0, p10=0, p11=2147483648, p12=2147483648, p13=2147483648, p14=2147483648, p15=2147483648, p2=0, p3=2147483648, p4=2147483648, p5=2147483648, p6=2147483648, p7=2147483648, p8=2147483648, p9=2147483648] [L105] COND TRUE p4 != 0 [L106] lk4 = 1 VAL [cond=2147483648, lk1=0, lk10=0, lk11=0, lk12=0, lk13=0, lk14=0, lk15=0, lk2=0, lk3=1, lk4=1, lk5=0, lk6=0, lk7=0, lk8=0, lk9=0, p1=0, p10=0, p11=2147483648, p12=2147483648, p13=2147483648, p14=2147483648, p15=2147483648, p2=0, p3=2147483648, p4=2147483648, p5=2147483648, p6=2147483648, p7=2147483648, p8=2147483648, p9=2147483648] [L109] COND TRUE p5 != 0 [L110] lk5 = 1 VAL [cond=2147483648, lk1=0, lk10=0, lk11=0, lk12=0, lk13=0, lk14=0, lk15=0, lk2=0, lk3=1, lk4=1, lk5=1, lk6=0, lk7=0, lk8=0, lk9=0, p1=0, p10=0, p11=2147483648, p12=2147483648, p13=2147483648, p14=2147483648, p15=2147483648, p2=0, p3=2147483648, p4=2147483648, p5=2147483648, p6=2147483648, p7=2147483648, p8=2147483648, p9=2147483648] [L113] COND TRUE p6 != 0 [L114] lk6 = 1 VAL [cond=2147483648, lk1=0, lk10=0, lk11=0, lk12=0, lk13=0, lk14=0, lk15=0, lk2=0, lk3=1, lk4=1, lk5=1, lk6=1, lk7=0, lk8=0, lk9=0, p1=0, p10=0, p11=2147483648, p12=2147483648, p13=2147483648, p14=2147483648, p15=2147483648, p2=0, p3=2147483648, p4=2147483648, p5=2147483648, p6=2147483648, p7=2147483648, p8=2147483648, p9=2147483648] [L117] COND TRUE p7 != 0 [L118] lk7 = 1 VAL [cond=2147483648, lk1=0, lk10=0, lk11=0, lk12=0, lk13=0, lk14=0, lk15=0, lk2=0, lk3=1, lk4=1, lk5=1, lk6=1, lk7=1, lk8=0, lk9=0, p1=0, p10=0, p11=2147483648, p12=2147483648, p13=2147483648, p14=2147483648, p15=2147483648, p2=0, p3=2147483648, p4=2147483648, p5=2147483648, p6=2147483648, p7=2147483648, p8=2147483648, p9=2147483648] [L121] COND TRUE p8 != 0 [L122] lk8 = 1 VAL [cond=2147483648, lk1=0, lk10=0, lk11=0, lk12=0, lk13=0, lk14=0, lk15=0, lk2=0, lk3=1, lk4=1, lk5=1, lk6=1, lk7=1, lk8=1, lk9=0, p1=0, p10=0, p11=2147483648, p12=2147483648, p13=2147483648, p14=2147483648, p15=2147483648, p2=0, p3=2147483648, p4=2147483648, p5=2147483648, p6=2147483648, p7=2147483648, p8=2147483648, p9=2147483648] [L125] COND TRUE p9 != 0 [L126] lk9 = 1 VAL [cond=2147483648, lk1=0, lk10=0, lk11=0, lk12=0, lk13=0, lk14=0, lk15=0, lk2=0, lk3=1, lk4=1, lk5=1, lk6=1, lk7=1, lk8=1, lk9=1, p1=0, p10=0, p11=2147483648, p12=2147483648, p13=2147483648, p14=2147483648, p15=2147483648, p2=0, p3=2147483648, p4=2147483648, p5=2147483648, p6=2147483648, p7=2147483648, p8=2147483648, p9=2147483648] [L129] COND FALSE !(p10 != 0) VAL [cond=2147483648, lk1=0, lk10=0, lk11=0, lk12=0, lk13=0, lk14=0, lk15=0, lk2=0, lk3=1, lk4=1, lk5=1, lk6=1, lk7=1, lk8=1, lk9=1, p1=0, p10=0, p11=2147483648, p12=2147483648, p13=2147483648, p14=2147483648, p15=2147483648, p2=0, p3=2147483648, p4=2147483648, p5=2147483648, p6=2147483648, p7=2147483648, p8=2147483648, p9=2147483648] [L133] COND TRUE p11 != 0 [L134] lk11 = 1 VAL [cond=2147483648, lk1=0, lk10=0, lk11=1, lk12=0, lk13=0, lk14=0, lk15=0, lk2=0, lk3=1, lk4=1, lk5=1, lk6=1, lk7=1, lk8=1, lk9=1, p1=0, p10=0, p11=2147483648, p12=2147483648, p13=2147483648, p14=2147483648, p15=2147483648, p2=0, p3=2147483648, p4=2147483648, p5=2147483648, p6=2147483648, p7=2147483648, p8=2147483648, p9=2147483648] [L137] COND TRUE p12 != 0 [L138] lk12 = 1 VAL [cond=2147483648, lk1=0, lk10=0, lk11=1, lk12=1, lk13=0, lk14=0, lk15=0, lk2=0, lk3=1, lk4=1, lk5=1, lk6=1, lk7=1, lk8=1, lk9=1, p1=0, p10=0, p11=2147483648, p12=2147483648, p13=2147483648, p14=2147483648, p15=2147483648, p2=0, p3=2147483648, p4=2147483648, p5=2147483648, p6=2147483648, p7=2147483648, p8=2147483648, p9=2147483648] [L141] COND TRUE p13 != 0 [L142] lk13 = 1 VAL [cond=2147483648, lk1=0, lk10=0, lk11=1, lk12=1, lk13=1, lk14=0, lk15=0, lk2=0, lk3=1, lk4=1, lk5=1, lk6=1, lk7=1, lk8=1, lk9=1, p1=0, p10=0, p11=2147483648, p12=2147483648, p13=2147483648, p14=2147483648, p15=2147483648, p2=0, p3=2147483648, p4=2147483648, p5=2147483648, p6=2147483648, p7=2147483648, p8=2147483648, p9=2147483648] [L145] COND TRUE p14 != 0 [L146] lk14 = 1 VAL [cond=2147483648, lk1=0, lk10=0, lk11=1, lk12=1, lk13=1, lk14=1, lk15=0, lk2=0, lk3=1, lk4=1, lk5=1, lk6=1, lk7=1, lk8=1, lk9=1, p1=0, p10=0, p11=2147483648, p12=2147483648, p13=2147483648, p14=2147483648, p15=2147483648, p2=0, p3=2147483648, p4=2147483648, p5=2147483648, p6=2147483648, p7=2147483648, p8=2147483648, p9=2147483648] [L149] COND TRUE p15 != 0 [L150] lk15 = 1 VAL [cond=2147483648, lk1=0, lk10=0, lk11=1, lk12=1, lk13=1, lk14=1, lk15=1, lk2=0, lk3=1, lk4=1, lk5=1, lk6=1, lk7=1, lk8=1, lk9=1, p1=0, p10=0, p11=2147483648, p12=2147483648, p13=2147483648, p14=2147483648, p15=2147483648, p2=0, p3=2147483648, p4=2147483648, p5=2147483648, p6=2147483648, p7=2147483648, p8=2147483648, p9=2147483648] [L155] COND FALSE !(p1 != 0) VAL [cond=2147483648, lk1=0, lk10=0, lk11=1, lk12=1, lk13=1, lk14=1, lk15=1, lk2=0, lk3=1, lk4=1, lk5=1, lk6=1, lk7=1, lk8=1, lk9=1, p1=0, p10=0, p11=2147483648, p12=2147483648, p13=2147483648, p14=2147483648, p15=2147483648, p2=0, p3=2147483648, p4=2147483648, p5=2147483648, p6=2147483648, p7=2147483648, p8=2147483648, p9=2147483648] [L160] COND FALSE !(p2 != 0) VAL [cond=2147483648, lk1=0, lk10=0, lk11=1, lk12=1, lk13=1, lk14=1, lk15=1, lk2=0, lk3=1, lk4=1, lk5=1, lk6=1, lk7=1, lk8=1, lk9=1, p1=0, p10=0, p11=2147483648, p12=2147483648, p13=2147483648, p14=2147483648, p15=2147483648, p2=0, p3=2147483648, p4=2147483648, p5=2147483648, p6=2147483648, p7=2147483648, p8=2147483648, p9=2147483648] [L233] reach_error() VAL [cond=2147483648, lk1=0, lk10=0, lk11=1, lk12=1, lk13=1, lk14=1, lk15=1, lk2=0, lk3=1, lk4=1, lk5=1, lk6=1, lk7=1, lk8=1, lk9=1, p1=0, p10=0, p11=2147483648, p12=2147483648, p13=2147483648, p14=2147483648, p15=2147483648, p2=0, p3=2147483648, p4=2147483648, p5=2147483648, p6=2147483648, p7=2147483648, p8=2147483648, p9=2147483648] - UnprovableResult [Line: 6]: 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 4 procedures, 64 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 3202.2ms, OverallIterations: 5, TraceHistogramMax: 1, EmptinessCheckTime: 12.5ms, AutomataDifference: 131.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 12.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 487 SDtfs, 223 SDslu, 279 SDs, 0 SdLazy, 16 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 30.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 170 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=104occurred in iteration=4, InterpolantAutomatonStates: 11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 69.2ms AutomataMinimizationTime, 4 MinimizatonAttempts, 36 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 127.1ms SsaConstructionTime, 162.8ms SatisfiabilityAnalysisTime, 1051.7ms InterpolantComputationTime, 113 NumberOfCodeBlocks, 113 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 166 ConstructedInterpolants, 0 QuantifiedInterpolants, 380 SizeOfPredicates, 0 NumberOfNonLiveVariables, 394 ConjunctsInSsa, 7 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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 could not prove your program: unable to determine feasibility of some traces [2021-08-27 07:51:21,728 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...