./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/locks/test_locks_14-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 3a877d22 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_14-2.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 75f53c568c86c59ddc62d2fd150ff0a5ed9b51ea17cada3ff1a95dec57d9167c --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 14:07:20,337 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 14:07:20,365 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 14:07:20,400 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 14:07:20,402 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 14:07:20,403 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 14:07:20,404 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 14:07:20,405 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 14:07:20,406 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 14:07:20,407 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 14:07:20,408 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 14:07:20,408 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 14:07:20,409 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 14:07:20,409 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 14:07:20,410 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 14:07:20,411 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 14:07:20,412 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 14:07:20,413 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 14:07:20,414 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 14:07:20,415 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 14:07:20,416 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 14:07:20,420 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 14:07:20,420 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 14:07:20,421 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 14:07:20,427 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 14:07:20,428 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 14:07:20,428 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 14:07:20,429 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 14:07:20,429 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 14:07:20,436 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 14:07:20,436 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 14:07:20,437 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 14:07:20,437 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 14:07:20,438 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 14:07:20,438 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 14:07:20,438 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 14:07:20,439 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 14:07:20,439 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 14:07:20,439 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 14:07:20,440 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 14:07:20,440 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 14:07:20,442 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-12-15 14:07:20,462 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 14:07:20,462 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 14:07:20,463 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 14:07:20,463 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 14:07:20,463 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 14:07:20,463 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 14:07:20,464 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 14:07:20,464 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 14:07:20,464 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 14:07:20,464 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 14:07:20,465 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 14:07:20,465 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-15 14:07:20,465 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-15 14:07:20,465 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 14:07:20,465 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 14:07:20,465 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-15 14:07:20,465 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-15 14:07:20,466 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-12-15 14:07:20,466 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 14:07:20,466 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-15 14:07:20,466 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 14:07:20,466 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 14:07:20,466 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 14:07:20,466 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 14:07:20,466 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 14:07:20,466 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 14:07:20,466 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 14:07:20,467 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 14:07:20,467 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-15 14:07:20,467 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-15 14:07:20,467 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 14:07:20,467 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 75f53c568c86c59ddc62d2fd150ff0a5ed9b51ea17cada3ff1a95dec57d9167c [2021-12-15 14:07:20,624 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 14:07:20,643 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 14:07:20,645 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 14:07:20,646 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 14:07:20,647 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 14:07:20,647 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/locks/test_locks_14-2.c [2021-12-15 14:07:20,690 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fc2493184/05ef37450fcf49148b7318548208dca8/FLAG04978e1db [2021-12-15 14:07:21,142 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 14:07:21,155 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/locks/test_locks_14-2.c [2021-12-15 14:07:21,183 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fc2493184/05ef37450fcf49148b7318548208dca8/FLAG04978e1db [2021-12-15 14:07:21,684 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fc2493184/05ef37450fcf49148b7318548208dca8 [2021-12-15 14:07:21,687 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 14:07:21,688 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 14:07:21,689 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 14:07:21,689 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 14:07:21,695 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 14:07:21,696 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 02:07:21" (1/1) ... [2021-12-15 14:07:21,697 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@588d50f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:07:21, skipping insertion in model container [2021-12-15 14:07:21,697 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 02:07:21" (1/1) ... [2021-12-15 14:07:21,701 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 14:07:21,728 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 14:07:21,867 WARN L230 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_14-2.c[5305,5318] [2021-12-15 14:07:21,874 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 14:07:21,881 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 14:07:21,901 WARN L230 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_14-2.c[5305,5318] [2021-12-15 14:07:21,902 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 14:07:21,911 INFO L208 MainTranslator]: Completed translation [2021-12-15 14:07:21,911 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:07:21 WrapperNode [2021-12-15 14:07:21,911 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 14:07:21,912 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 14:07:21,912 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 14:07:21,912 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 14:07:21,920 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:07:21" (1/1) ... [2021-12-15 14:07:21,925 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:07:21" (1/1) ... [2021-12-15 14:07:21,942 INFO L137 Inliner]: procedures = 12, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 184 [2021-12-15 14:07:21,942 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 14:07:21,943 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 14:07:21,943 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 14:07:21,943 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 14:07:21,949 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:07:21" (1/1) ... [2021-12-15 14:07:21,949 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:07:21" (1/1) ... [2021-12-15 14:07:21,951 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:07:21" (1/1) ... [2021-12-15 14:07:21,951 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:07:21" (1/1) ... [2021-12-15 14:07:21,953 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:07:21" (1/1) ... [2021-12-15 14:07:21,956 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:07:21" (1/1) ... [2021-12-15 14:07:21,957 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:07:21" (1/1) ... [2021-12-15 14:07:21,959 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 14:07:21,959 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 14:07:21,959 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 14:07:21,960 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 14:07:21,960 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:07:21" (1/1) ... [2021-12-15 14:07:21,965 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 14:07:21,972 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 14:07:21,984 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) [2021-12-15 14:07:21,986 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 [2021-12-15 14:07:22,016 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 14:07:22,017 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 14:07:22,017 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 14:07:22,017 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-15 14:07:22,090 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 14:07:22,091 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 14:07:22,292 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 14:07:22,298 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 14:07:22,298 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-15 14:07:22,300 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 02:07:22 BoogieIcfgContainer [2021-12-15 14:07:22,300 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 14:07:22,301 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 14:07:22,301 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 14:07:22,303 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 14:07:22,303 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 02:07:21" (1/3) ... [2021-12-15 14:07:22,304 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f2aeae9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 02:07:22, skipping insertion in model container [2021-12-15 14:07:22,304 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:07:21" (2/3) ... [2021-12-15 14:07:22,304 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f2aeae9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 02:07:22, skipping insertion in model container [2021-12-15 14:07:22,304 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 02:07:22" (3/3) ... [2021-12-15 14:07:22,305 INFO L111 eAbstractionObserver]: Analyzing ICFG test_locks_14-2.c [2021-12-15 14:07:22,308 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 14:07:22,309 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-15 14:07:22,346 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 14:07:22,358 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, mAutomataTypeConcurrency=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 [2021-12-15 14:07:22,358 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-15 14:07:22,371 INFO L276 IsEmpty]: Start isEmpty. Operand has 53 states, 50 states have (on average 1.94) internal successors, (97), 52 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:07:22,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-12-15 14:07:22,387 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 14:07:22,388 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-12-15 14:07:22,388 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-15 14:07:22,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 14:07:22,396 INFO L85 PathProgramCache]: Analyzing trace with hash 28943010, now seen corresponding path program 1 times [2021-12-15 14:07:22,402 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 14:07:22,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792332644] [2021-12-15 14:07:22,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:07:22,404 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 14:07:22,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 14:07:22,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 14:07:22,528 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 14:07:22,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792332644] [2021-12-15 14:07:22,528 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792332644] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 14:07:22,528 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 14:07:22,529 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-15 14:07:22,530 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474955937] [2021-12-15 14:07:22,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 14:07:22,533 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-15 14:07:22,533 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 14:07:22,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-15 14:07:22,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-15 14:07:22,556 INFO L87 Difference]: Start difference. First operand has 53 states, 50 states have (on average 1.94) internal successors, (97), 52 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:07:22,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 14:07:22,574 INFO L93 Difference]: Finished difference Result 53 states and 94 transitions. [2021-12-15 14:07:22,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-15 14:07:22,575 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-12-15 14:07:22,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 14:07:22,583 INFO L225 Difference]: With dead ends: 53 [2021-12-15 14:07:22,583 INFO L226 Difference]: Without dead ends: 51 [2021-12-15 14:07:22,588 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-15 14:07:22,591 INFO L933 BasicCegarLoop]: 94 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 14:07:22,592 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 14:07:22,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-12-15 14:07:22,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2021-12-15 14:07:22,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 49 states have (on average 1.8775510204081634) internal successors, (92), 50 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:07:22,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 92 transitions. [2021-12-15 14:07:22,622 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 92 transitions. Word has length 5 [2021-12-15 14:07:22,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 14:07:22,623 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 92 transitions. [2021-12-15 14:07:22,623 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:07:22,623 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 92 transitions. [2021-12-15 14:07:22,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-12-15 14:07:22,623 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 14:07:22,624 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-12-15 14:07:22,624 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-15 14:07:22,624 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-15 14:07:22,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 14:07:22,626 INFO L85 PathProgramCache]: Analyzing trace with hash 889700139, now seen corresponding path program 1 times [2021-12-15 14:07:22,626 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 14:07:22,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815240132] [2021-12-15 14:07:22,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:07:22,627 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 14:07:22,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 14:07:22,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 14:07:22,693 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 14:07:22,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815240132] [2021-12-15 14:07:22,694 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [815240132] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 14:07:22,694 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 14:07:22,694 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-15 14:07:22,695 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223617481] [2021-12-15 14:07:22,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 14:07:22,696 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 14:07:22,699 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 14:07:22,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 14:07:22,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 14:07:22,701 INFO L87 Difference]: Start difference. First operand 51 states and 92 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:07:22,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 14:07:22,715 INFO L93 Difference]: Finished difference Result 50 states and 91 transitions. [2021-12-15 14:07:22,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 14:07:22,721 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-12-15 14:07:22,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 14:07:22,722 INFO L225 Difference]: With dead ends: 50 [2021-12-15 14:07:22,722 INFO L226 Difference]: Without dead ends: 48 [2021-12-15 14:07:22,723 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 14:07:22,724 INFO L933 BasicCegarLoop]: 91 mSDtfsCounter, 86 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 14:07:22,725 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [86 Valid, 91 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 14:07:22,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2021-12-15 14:07:22,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2021-12-15 14:07:22,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 47 states have (on average 1.8936170212765957) internal successors, (89), 47 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:07:22,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 89 transitions. [2021-12-15 14:07:22,731 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 89 transitions. Word has length 6 [2021-12-15 14:07:22,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 14:07:22,731 INFO L470 AbstractCegarLoop]: Abstraction has 48 states and 89 transitions. [2021-12-15 14:07:22,732 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:07:22,732 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 89 transitions. [2021-12-15 14:07:22,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-12-15 14:07:22,733 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 14:07:22,734 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 14:07:22,734 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-15 14:07:22,734 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-15 14:07:22,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 14:07:22,736 INFO L85 PathProgramCache]: Analyzing trace with hash 792943379, now seen corresponding path program 1 times [2021-12-15 14:07:22,736 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 14:07:22,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356607063] [2021-12-15 14:07:22,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:07:22,737 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 14:07:22,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 14:07:22,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 14:07:22,829 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 14:07:22,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356607063] [2021-12-15 14:07:22,829 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356607063] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 14:07:22,830 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 14:07:22,830 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 14:07:22,830 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065222281] [2021-12-15 14:07:22,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 14:07:22,831 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 14:07:22,831 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 14:07:22,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 14:07:22,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 14:07:22,832 INFO L87 Difference]: Start difference. First operand 48 states and 89 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:07:22,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 14:07:22,847 INFO L93 Difference]: Finished difference Result 93 states and 173 transitions. [2021-12-15 14:07:22,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 14:07:22,847 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-12-15 14:07:22,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 14:07:22,848 INFO L225 Difference]: With dead ends: 93 [2021-12-15 14:07:22,849 INFO L226 Difference]: Without dead ends: 93 [2021-12-15 14:07:22,849 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 14:07:22,850 INFO L933 BasicCegarLoop]: 90 mSDtfsCounter, 68 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 14:07:22,850 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [68 Valid, 174 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 14:07:22,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2021-12-15 14:07:22,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 63. [2021-12-15 14:07:22,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 62 states have (on average 1.903225806451613) internal successors, (118), 62 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:07:22,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 118 transitions. [2021-12-15 14:07:22,856 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 118 transitions. Word has length 21 [2021-12-15 14:07:22,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 14:07:22,856 INFO L470 AbstractCegarLoop]: Abstraction has 63 states and 118 transitions. [2021-12-15 14:07:22,857 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:07:22,857 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 118 transitions. [2021-12-15 14:07:22,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-12-15 14:07:22,857 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 14:07:22,858 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 14:07:22,858 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-15 14:07:22,858 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-15 14:07:22,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 14:07:22,859 INFO L85 PathProgramCache]: Analyzing trace with hash 792950571, now seen corresponding path program 1 times [2021-12-15 14:07:22,859 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 14:07:22,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944006160] [2021-12-15 14:07:22,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:07:22,859 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 14:07:22,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 14:07:22,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 14:07:22,887 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 14:07:22,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944006160] [2021-12-15 14:07:22,887 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [944006160] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 14:07:22,888 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 14:07:22,888 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 14:07:22,888 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994677068] [2021-12-15 14:07:22,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 14:07:22,888 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 14:07:22,889 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 14:07:22,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 14:07:22,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 14:07:22,889 INFO L87 Difference]: Start difference. First operand 63 states and 118 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:07:22,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 14:07:22,901 INFO L93 Difference]: Finished difference Result 94 states and 173 transitions. [2021-12-15 14:07:22,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 14:07:22,901 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-12-15 14:07:22,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 14:07:22,902 INFO L225 Difference]: With dead ends: 94 [2021-12-15 14:07:22,902 INFO L226 Difference]: Without dead ends: 94 [2021-12-15 14:07:22,903 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 14:07:22,903 INFO L933 BasicCegarLoop]: 142 mSDtfsCounter, 71 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 224 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 14:07:22,904 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [71 Valid, 224 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 14:07:22,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2021-12-15 14:07:22,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 92. [2021-12-15 14:07:22,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 91 states have (on average 1.89010989010989) internal successors, (172), 91 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:07:22,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 172 transitions. [2021-12-15 14:07:22,911 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 172 transitions. Word has length 21 [2021-12-15 14:07:22,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 14:07:22,911 INFO L470 AbstractCegarLoop]: Abstraction has 92 states and 172 transitions. [2021-12-15 14:07:22,911 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:07:22,912 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 172 transitions. [2021-12-15 14:07:22,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-12-15 14:07:22,912 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 14:07:22,912 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 14:07:22,912 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-15 14:07:22,913 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-15 14:07:22,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 14:07:22,913 INFO L85 PathProgramCache]: Analyzing trace with hash -795404523, now seen corresponding path program 1 times [2021-12-15 14:07:22,913 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 14:07:22,914 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529214048] [2021-12-15 14:07:22,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:07:22,914 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 14:07:22,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 14:07:22,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 14:07:22,939 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 14:07:22,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529214048] [2021-12-15 14:07:22,939 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529214048] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 14:07:22,939 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 14:07:22,940 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 14:07:22,940 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721086988] [2021-12-15 14:07:22,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 14:07:22,940 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 14:07:22,941 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 14:07:22,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 14:07:22,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 14:07:22,941 INFO L87 Difference]: Start difference. First operand 92 states and 172 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:07:22,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 14:07:22,951 INFO L93 Difference]: Finished difference Result 96 states and 173 transitions. [2021-12-15 14:07:22,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 14:07:22,952 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-12-15 14:07:22,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 14:07:22,953 INFO L225 Difference]: With dead ends: 96 [2021-12-15 14:07:22,953 INFO L226 Difference]: Without dead ends: 96 [2021-12-15 14:07:22,953 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 14:07:22,954 INFO L933 BasicCegarLoop]: 115 mSDtfsCounter, 69 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 14:07:22,955 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 198 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 14:07:22,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2021-12-15 14:07:22,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 94. [2021-12-15 14:07:22,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 93 states have (on average 1.8494623655913978) internal successors, (172), 93 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:07:22,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 172 transitions. [2021-12-15 14:07:22,961 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 172 transitions. Word has length 21 [2021-12-15 14:07:22,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 14:07:22,962 INFO L470 AbstractCegarLoop]: Abstraction has 94 states and 172 transitions. [2021-12-15 14:07:22,962 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:07:22,962 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 172 transitions. [2021-12-15 14:07:22,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-12-15 14:07:22,963 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 14:07:22,963 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 14:07:22,963 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-15 14:07:22,963 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-15 14:07:22,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 14:07:22,964 INFO L85 PathProgramCache]: Analyzing trace with hash -795397331, now seen corresponding path program 1 times [2021-12-15 14:07:22,964 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 14:07:22,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632027239] [2021-12-15 14:07:22,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:07:22,965 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 14:07:22,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 14:07:22,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 14:07:22,987 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 14:07:22,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632027239] [2021-12-15 14:07:22,988 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632027239] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 14:07:22,988 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 14:07:22,988 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 14:07:22,988 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916513093] [2021-12-15 14:07:22,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 14:07:22,989 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 14:07:22,989 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 14:07:22,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 14:07:22,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 14:07:22,990 INFO L87 Difference]: Start difference. First operand 94 states and 172 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:07:22,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 14:07:23,000 INFO L93 Difference]: Finished difference Result 127 states and 228 transitions. [2021-12-15 14:07:23,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 14:07:23,000 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-12-15 14:07:23,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 14:07:23,001 INFO L225 Difference]: With dead ends: 127 [2021-12-15 14:07:23,001 INFO L226 Difference]: Without dead ends: 127 [2021-12-15 14:07:23,002 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 14:07:23,003 INFO L933 BasicCegarLoop]: 92 mSDtfsCounter, 70 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 14:07:23,003 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [70 Valid, 125 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 14:07:23,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2021-12-15 14:07:23,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 125. [2021-12-15 14:07:23,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 124 states have (on average 1.8306451612903225) internal successors, (227), 124 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:07:23,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 227 transitions. [2021-12-15 14:07:23,009 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 227 transitions. Word has length 21 [2021-12-15 14:07:23,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 14:07:23,010 INFO L470 AbstractCegarLoop]: Abstraction has 125 states and 227 transitions. [2021-12-15 14:07:23,010 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:07:23,010 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 227 transitions. [2021-12-15 14:07:23,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-12-15 14:07:23,011 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 14:07:23,011 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 14:07:23,011 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-15 14:07:23,012 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-15 14:07:23,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 14:07:23,012 INFO L85 PathProgramCache]: Analyzing trace with hash -1816465685, now seen corresponding path program 1 times [2021-12-15 14:07:23,012 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 14:07:23,013 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916986473] [2021-12-15 14:07:23,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:07:23,013 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 14:07:23,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-15 14:07:23,023 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-15 14:07:23,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-15 14:07:23,045 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-15 14:07:23,045 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-15 14:07:23,046 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (1 of 2 remaining) [2021-12-15 14:07:23,047 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (0 of 2 remaining) [2021-12-15 14:07:23,048 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-15 14:07:23,050 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2021-12-15 14:07:23,052 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-15 14:07:23,087 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 02:07:23 BoogieIcfgContainer [2021-12-15 14:07:23,087 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-15 14:07:23,104 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-15 14:07:23,104 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-15 14:07:23,104 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-15 14:07:23,104 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 02:07:22" (3/4) ... [2021-12-15 14:07:23,106 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-15 14:07:23,106 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-15 14:07:23,109 INFO L158 Benchmark]: Toolchain (without parser) took 1418.78ms. Allocated memory was 138.4MB in the beginning and 167.8MB in the end (delta: 29.4MB). Free memory was 108.6MB in the beginning and 108.9MB in the end (delta: -232.8kB). Peak memory consumption was 26.9MB. Max. memory is 16.1GB. [2021-12-15 14:07:23,109 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 138.4MB. Free memory is still 96.0MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 14:07:23,111 INFO L158 Benchmark]: CACSL2BoogieTranslator took 222.27ms. Allocated memory is still 138.4MB. Free memory was 108.4MB in the beginning and 112.7MB in the end (delta: -4.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-12-15 14:07:23,112 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.35ms. Allocated memory is still 138.4MB. Free memory was 112.7MB in the beginning and 110.7MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-15 14:07:23,113 INFO L158 Benchmark]: Boogie Preprocessor took 15.79ms. Allocated memory is still 138.4MB. Free memory was 110.7MB in the beginning and 109.4MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 14:07:23,114 INFO L158 Benchmark]: RCFGBuilder took 340.53ms. Allocated memory is still 138.4MB. Free memory was 109.4MB in the beginning and 95.1MB in the end (delta: 14.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-12-15 14:07:23,114 INFO L158 Benchmark]: TraceAbstraction took 786.01ms. Allocated memory was 138.4MB in the beginning and 167.8MB in the end (delta: 29.4MB). Free memory was 94.7MB in the beginning and 109.9MB in the end (delta: -15.3MB). Peak memory consumption was 13.9MB. Max. memory is 16.1GB. [2021-12-15 14:07:23,114 INFO L158 Benchmark]: Witness Printer took 2.90ms. Allocated memory is still 167.8MB. Free memory was 109.9MB in the beginning and 108.9MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-15 14:07:23,116 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 138.4MB. Free memory is still 96.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 222.27ms. Allocated memory is still 138.4MB. Free memory was 108.4MB in the beginning and 112.7MB in the end (delta: -4.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 30.35ms. Allocated memory is still 138.4MB. Free memory was 112.7MB in the beginning and 110.7MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 15.79ms. Allocated memory is still 138.4MB. Free memory was 110.7MB in the beginning and 109.4MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 340.53ms. Allocated memory is still 138.4MB. Free memory was 109.4MB in the beginning and 95.1MB in the end (delta: 14.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 786.01ms. Allocated memory was 138.4MB in the beginning and 167.8MB in the end (delta: 29.4MB). Free memory was 94.7MB in the beginning and 109.9MB in the end (delta: -15.3MB). Peak memory consumption was 13.9MB. Max. memory is 16.1GB. * Witness Printer took 2.90ms. Allocated memory is still 167.8MB. Free memory was 109.9MB in the beginning and 108.9MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 219]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 219. 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; [L51] int cond; VAL [p1=0, p10=1, p11=0, p12=1, p13=1, p14=1, p2=0, p3=0, p4=1, p5=1, p6=1, p7=1, p8=1, p9=1] [L53] COND TRUE 1 [L54] cond = __VERIFIER_nondet_int() [L55] COND FALSE !(cond == 0) [L58] lk1 = 0 [L60] lk2 = 0 [L62] lk3 = 0 [L64] lk4 = 0 [L66] lk5 = 0 [L68] lk6 = 0 [L70] lk7 = 0 [L72] lk8 = 0 [L74] lk9 = 0 [L76] lk10 = 0 [L78] lk11 = 0 [L80] lk12 = 0 [L82] lk13 = 0 [L84] lk14 = 0 VAL [cond=1, lk1=0, lk10=0, lk11=0, lk12=0, lk13=0, lk14=0, lk2=0, lk3=0, lk4=0, lk5=0, lk6=0, lk7=0, lk8=0, lk9=0, p1=0, p10=1, p11=0, p12=1, p13=1, p14=1, p2=0, p3=0, p4=1, p5=1, p6=1, p7=1, p8=1, p9=1] [L88] COND FALSE !(p1 != 0) VAL [cond=1, lk1=0, lk10=0, lk11=0, lk12=0, lk13=0, lk14=0, lk2=0, lk3=0, lk4=0, lk5=0, lk6=0, lk7=0, lk8=0, lk9=0, p1=0, p10=1, p11=0, p12=1, p13=1, p14=1, p2=0, p3=0, p4=1, p5=1, p6=1, p7=1, p8=1, p9=1] [L92] COND FALSE !(p2 != 0) VAL [cond=1, lk1=0, lk10=0, lk11=0, lk12=0, lk13=0, lk14=0, lk2=0, lk3=0, lk4=0, lk5=0, lk6=0, lk7=0, lk8=0, lk9=0, p1=0, p10=1, p11=0, p12=1, p13=1, p14=1, p2=0, p3=0, p4=1, p5=1, p6=1, p7=1, p8=1, p9=1] [L96] COND FALSE !(p3 != 0) VAL [cond=1, lk1=0, lk10=0, lk11=0, lk12=0, lk13=0, lk14=0, lk2=0, lk3=0, lk4=0, lk5=0, lk6=0, lk7=0, lk8=0, lk9=0, p1=0, p10=1, p11=0, p12=1, p13=1, p14=1, p2=0, p3=0, p4=1, p5=1, p6=1, p7=1, p8=1, p9=1] [L100] COND TRUE p4 != 0 [L101] lk4 = 1 VAL [cond=1, lk1=0, lk10=0, lk11=0, lk12=0, lk13=0, lk14=0, lk2=0, lk3=0, lk4=1, lk5=0, lk6=0, lk7=0, lk8=0, lk9=0, p1=0, p10=1, p11=0, p12=1, p13=1, p14=1, p2=0, p3=0, p4=1, p5=1, p6=1, p7=1, p8=1, p9=1] [L104] COND TRUE p5 != 0 [L105] lk5 = 1 VAL [cond=1, lk1=0, lk10=0, lk11=0, lk12=0, lk13=0, lk14=0, lk2=0, lk3=0, lk4=1, lk5=1, lk6=0, lk7=0, lk8=0, lk9=0, p1=0, p10=1, p11=0, p12=1, p13=1, p14=1, p2=0, p3=0, p4=1, p5=1, p6=1, p7=1, p8=1, p9=1] [L108] COND TRUE p6 != 0 [L109] lk6 = 1 VAL [cond=1, lk1=0, lk10=0, lk11=0, lk12=0, lk13=0, lk14=0, lk2=0, lk3=0, lk4=1, lk5=1, lk6=1, lk7=0, lk8=0, lk9=0, p1=0, p10=1, p11=0, p12=1, p13=1, p14=1, p2=0, p3=0, p4=1, p5=1, p6=1, p7=1, p8=1, p9=1] [L112] COND TRUE p7 != 0 [L113] lk7 = 1 VAL [cond=1, lk1=0, lk10=0, lk11=0, lk12=0, lk13=0, lk14=0, lk2=0, lk3=0, lk4=1, lk5=1, lk6=1, lk7=1, lk8=0, lk9=0, p1=0, p10=1, p11=0, p12=1, p13=1, p14=1, p2=0, p3=0, p4=1, p5=1, p6=1, p7=1, p8=1, p9=1] [L116] COND TRUE p8 != 0 [L117] lk8 = 1 VAL [cond=1, lk1=0, lk10=0, lk11=0, lk12=0, lk13=0, lk14=0, lk2=0, lk3=0, lk4=1, lk5=1, lk6=1, lk7=1, lk8=1, lk9=0, p1=0, p10=1, p11=0, p12=1, p13=1, p14=1, p2=0, p3=0, p4=1, p5=1, p6=1, p7=1, p8=1, p9=1] [L120] COND TRUE p9 != 0 [L121] lk9 = 1 VAL [cond=1, lk1=0, lk10=0, lk11=0, lk12=0, lk13=0, lk14=0, lk2=0, lk3=0, lk4=1, lk5=1, lk6=1, lk7=1, lk8=1, lk9=1, p1=0, p10=1, p11=0, p12=1, p13=1, p14=1, p2=0, p3=0, p4=1, p5=1, p6=1, p7=1, p8=1, p9=1] [L124] COND TRUE p10 != 0 [L125] lk10 = 1 VAL [cond=1, lk1=0, lk10=1, lk11=0, lk12=0, lk13=0, lk14=0, lk2=0, lk3=0, lk4=1, lk5=1, lk6=1, lk7=1, lk8=1, lk9=1, p1=0, p10=1, p11=0, p12=1, p13=1, p14=1, p2=0, p3=0, p4=1, p5=1, p6=1, p7=1, p8=1, p9=1] [L128] COND FALSE !(p11 != 0) VAL [cond=1, lk1=0, lk10=1, lk11=0, lk12=0, lk13=0, lk14=0, lk2=0, lk3=0, lk4=1, lk5=1, lk6=1, lk7=1, lk8=1, lk9=1, p1=0, p10=1, p11=0, p12=1, p13=1, p14=1, p2=0, p3=0, p4=1, p5=1, p6=1, p7=1, p8=1, p9=1] [L132] COND TRUE p12 != 0 [L133] lk12 = 1 VAL [cond=1, lk1=0, lk10=1, lk11=0, lk12=1, lk13=0, lk14=0, lk2=0, lk3=0, lk4=1, lk5=1, lk6=1, lk7=1, lk8=1, lk9=1, p1=0, p10=1, p11=0, p12=1, p13=1, p14=1, p2=0, p3=0, p4=1, p5=1, p6=1, p7=1, p8=1, p9=1] [L136] COND TRUE p13 != 0 [L137] lk13 = 1 VAL [cond=1, lk1=0, lk10=1, lk11=0, lk12=1, lk13=1, lk14=0, lk2=0, lk3=0, lk4=1, lk5=1, lk6=1, lk7=1, lk8=1, lk9=1, p1=0, p10=1, p11=0, p12=1, p13=1, p14=1, p2=0, p3=0, p4=1, p5=1, p6=1, p7=1, p8=1, p9=1] [L140] COND TRUE p14 != 0 [L141] lk14 = 1 VAL [cond=1, lk1=0, lk10=1, lk11=0, lk12=1, lk13=1, lk14=1, lk2=0, lk3=0, lk4=1, lk5=1, lk6=1, lk7=1, lk8=1, lk9=1, p1=0, p10=1, p11=0, p12=1, p13=1, p14=1, p2=0, p3=0, p4=1, p5=1, p6=1, p7=1, p8=1, p9=1] [L146] COND FALSE !(p1 != 0) VAL [cond=1, lk1=0, lk10=1, lk11=0, lk12=1, lk13=1, lk14=1, lk2=0, lk3=0, lk4=1, lk5=1, lk6=1, lk7=1, lk8=1, lk9=1, p1=0, p10=1, p11=0, p12=1, p13=1, p14=1, p2=0, p3=0, p4=1, p5=1, p6=1, p7=1, p8=1, p9=1] [L151] COND FALSE !(p2 != 0) VAL [cond=1, lk1=0, lk10=1, lk11=0, lk12=1, lk13=1, lk14=1, lk2=0, lk3=0, lk4=1, lk5=1, lk6=1, lk7=1, lk8=1, lk9=1, p1=0, p10=1, p11=0, p12=1, p13=1, p14=1, p2=0, p3=0, p4=1, p5=1, p6=1, p7=1, p8=1, p9=1] [L219] reach_error() VAL [cond=1, lk1=0, lk10=1, lk11=0, lk12=1, lk13=1, lk14=1, lk2=0, lk3=0, lk4=1, lk5=1, lk6=1, lk7=1, lk8=1, lk9=1, p1=0, p10=1, p11=0, p12=1, p13=1, p14=1, p2=0, p3=0, 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 1 procedures, 53 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.7s, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 364 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 364 mSDsluCounter, 906 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 282 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 22 IncrementalHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 624 mSDtfsCounter, 22 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=125occurred in iteration=6, InterpolantAutomatonStates: 17, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 36 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 116 NumberOfCodeBlocks, 116 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 89 ConstructedInterpolants, 0 QuantifiedInterpolants, 239 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-12-15 14:07:23,160 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... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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_14-2.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 75f53c568c86c59ddc62d2fd150ff0a5ed9b51ea17cada3ff1a95dec57d9167c --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 14:07:24,998 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 14:07:25,000 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 14:07:25,037 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 14:07:25,037 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 14:07:25,040 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 14:07:25,041 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 14:07:25,045 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 14:07:25,057 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 14:07:25,061 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 14:07:25,061 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 14:07:25,062 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 14:07:25,063 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 14:07:25,065 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 14:07:25,066 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 14:07:25,070 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 14:07:25,070 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 14:07:25,071 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 14:07:25,073 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 14:07:25,075 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 14:07:25,078 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 14:07:25,079 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 14:07:25,080 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 14:07:25,081 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 14:07:25,085 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 14:07:25,088 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 14:07:25,088 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 14:07:25,089 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 14:07:25,090 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 14:07:25,091 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 14:07:25,091 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 14:07:25,091 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 14:07:25,092 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 14:07:25,093 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 14:07:25,094 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 14:07:25,094 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 14:07:25,094 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 14:07:25,095 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 14:07:25,095 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 14:07:25,096 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 14:07:25,097 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 14:07:25,097 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-12-15 14:07:25,130 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 14:07:25,130 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 14:07:25,131 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 14:07:25,131 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 14:07:25,132 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 14:07:25,132 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 14:07:25,133 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 14:07:25,133 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 14:07:25,133 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 14:07:25,133 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 14:07:25,134 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 14:07:25,134 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-15 14:07:25,134 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-15 14:07:25,135 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 14:07:25,135 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 14:07:25,135 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-15 14:07:25,135 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-15 14:07:25,135 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-12-15 14:07:25,135 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 14:07:25,135 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-15 14:07:25,136 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-15 14:07:25,136 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-15 14:07:25,136 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 14:07:25,136 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 14:07:25,136 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 14:07:25,136 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 14:07:25,136 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 14:07:25,137 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 14:07:25,137 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 14:07:25,137 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 14:07:25,137 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-15 14:07:25,137 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-15 14:07:25,137 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 14:07:25,138 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-15 14:07:25,138 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 75f53c568c86c59ddc62d2fd150ff0a5ed9b51ea17cada3ff1a95dec57d9167c [2021-12-15 14:07:25,514 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 14:07:25,551 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 14:07:25,553 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 14:07:25,554 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 14:07:25,566 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 14:07:25,567 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/locks/test_locks_14-2.c [2021-12-15 14:07:25,640 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d5c36013/3db65b6e23624a68a6d1e1e924d12e5e/FLAG5beac54ed [2021-12-15 14:07:26,098 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 14:07:26,099 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/locks/test_locks_14-2.c [2021-12-15 14:07:26,107 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d5c36013/3db65b6e23624a68a6d1e1e924d12e5e/FLAG5beac54ed [2021-12-15 14:07:26,124 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d5c36013/3db65b6e23624a68a6d1e1e924d12e5e [2021-12-15 14:07:26,126 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 14:07:26,126 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 14:07:26,127 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 14:07:26,128 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 14:07:26,132 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 14:07:26,133 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 02:07:26" (1/1) ... [2021-12-15 14:07:26,134 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13ef0474 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:07:26, skipping insertion in model container [2021-12-15 14:07:26,134 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 02:07:26" (1/1) ... [2021-12-15 14:07:26,141 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 14:07:26,170 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 14:07:26,314 WARN L230 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_14-2.c[5305,5318] [2021-12-15 14:07:26,319 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 14:07:26,332 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 14:07:26,394 WARN L230 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_14-2.c[5305,5318] [2021-12-15 14:07:26,399 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 14:07:26,409 INFO L208 MainTranslator]: Completed translation [2021-12-15 14:07:26,409 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:07:26 WrapperNode [2021-12-15 14:07:26,410 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 14:07:26,411 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 14:07:26,411 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 14:07:26,411 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 14:07:26,415 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:07:26" (1/1) ... [2021-12-15 14:07:26,428 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:07:26" (1/1) ... [2021-12-15 14:07:26,446 INFO L137 Inliner]: procedures = 12, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 169 [2021-12-15 14:07:26,446 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 14:07:26,447 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 14:07:26,447 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 14:07:26,447 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 14:07:26,453 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:07:26" (1/1) ... [2021-12-15 14:07:26,453 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:07:26" (1/1) ... [2021-12-15 14:07:26,462 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:07:26" (1/1) ... [2021-12-15 14:07:26,463 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:07:26" (1/1) ... [2021-12-15 14:07:26,469 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:07:26" (1/1) ... [2021-12-15 14:07:26,478 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:07:26" (1/1) ... [2021-12-15 14:07:26,482 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:07:26" (1/1) ... [2021-12-15 14:07:26,486 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 14:07:26,487 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 14:07:26,487 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 14:07:26,487 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 14:07:26,488 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:07:26" (1/1) ... [2021-12-15 14:07:26,492 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 14:07:26,499 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 14:07:26,523 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) [2021-12-15 14:07:26,572 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 [2021-12-15 14:07:26,590 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 14:07:26,591 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 14:07:26,591 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 14:07:26,591 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-15 14:07:26,663 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 14:07:26,664 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 14:07:26,827 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 14:07:26,831 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 14:07:26,831 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-15 14:07:26,832 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 02:07:26 BoogieIcfgContainer [2021-12-15 14:07:26,833 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 14:07:26,834 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 14:07:26,834 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 14:07:26,836 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 14:07:26,836 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 02:07:26" (1/3) ... [2021-12-15 14:07:26,837 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4148f412 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 02:07:26, skipping insertion in model container [2021-12-15 14:07:26,837 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:07:26" (2/3) ... [2021-12-15 14:07:26,837 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4148f412 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 02:07:26, skipping insertion in model container [2021-12-15 14:07:26,837 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 02:07:26" (3/3) ... [2021-12-15 14:07:26,854 INFO L111 eAbstractionObserver]: Analyzing ICFG test_locks_14-2.c [2021-12-15 14:07:26,858 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 14:07:26,858 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-15 14:07:26,885 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 14:07:26,890 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, mAutomataTypeConcurrency=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 [2021-12-15 14:07:26,890 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-15 14:07:26,899 INFO L276 IsEmpty]: Start isEmpty. Operand has 53 states, 50 states have (on average 1.94) internal successors, (97), 52 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:07:26,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-12-15 14:07:26,903 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 14:07:26,903 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-12-15 14:07:26,904 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-15 14:07:26,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 14:07:26,907 INFO L85 PathProgramCache]: Analyzing trace with hash 28943010, now seen corresponding path program 1 times [2021-12-15 14:07:26,914 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 14:07:26,915 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1099755191] [2021-12-15 14:07:26,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:07:26,915 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 14:07:26,916 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 14:07:26,924 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) [2021-12-15 14:07:26,955 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-15 14:07:26,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 14:07:26,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-15 14:07:26,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 14:07:26,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 14:07:26,991 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 14:07:26,992 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-15 14:07:26,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1099755191] [2021-12-15 14:07:26,993 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1099755191] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 14:07:26,993 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 14:07:26,993 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-15 14:07:26,994 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334603683] [2021-12-15 14:07:26,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 14:07:26,997 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-15 14:07:26,997 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-15 14:07:27,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-15 14:07:27,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-15 14:07:27,016 INFO L87 Difference]: Start difference. First operand has 53 states, 50 states have (on average 1.94) internal successors, (97), 52 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:07:27,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 14:07:27,029 INFO L93 Difference]: Finished difference Result 53 states and 94 transitions. [2021-12-15 14:07:27,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-15 14:07:27,030 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-12-15 14:07:27,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 14:07:27,036 INFO L225 Difference]: With dead ends: 53 [2021-12-15 14:07:27,037 INFO L226 Difference]: Without dead ends: 51 [2021-12-15 14:07:27,038 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-15 14:07:27,041 INFO L933 BasicCegarLoop]: 94 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 14:07:27,042 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 14:07:27,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-12-15 14:07:27,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2021-12-15 14:07:27,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 49 states have (on average 1.8775510204081634) internal successors, (92), 50 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:07:27,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 92 transitions. [2021-12-15 14:07:27,069 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 92 transitions. Word has length 5 [2021-12-15 14:07:27,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 14:07:27,070 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 92 transitions. [2021-12-15 14:07:27,070 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:07:27,070 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 92 transitions. [2021-12-15 14:07:27,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-12-15 14:07:27,070 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 14:07:27,070 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-12-15 14:07:27,080 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-12-15 14:07:27,277 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-15 14:07:27,278 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-15 14:07:27,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 14:07:27,279 INFO L85 PathProgramCache]: Analyzing trace with hash 889700139, now seen corresponding path program 1 times [2021-12-15 14:07:27,279 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 14:07:27,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [307444200] [2021-12-15 14:07:27,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:07:27,280 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 14:07:27,280 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 14:07:27,281 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) [2021-12-15 14:07:27,282 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-12-15 14:07:27,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 14:07:27,333 INFO L263 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-15 14:07:27,333 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 14:07:27,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 14:07:27,365 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 14:07:27,365 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-15 14:07:27,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [307444200] [2021-12-15 14:07:27,366 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [307444200] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 14:07:27,367 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 14:07:27,367 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-15 14:07:27,367 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269977906] [2021-12-15 14:07:27,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 14:07:27,368 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 14:07:27,369 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-15 14:07:27,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 14:07:27,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 14:07:27,372 INFO L87 Difference]: Start difference. First operand 51 states and 92 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:07:27,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 14:07:27,385 INFO L93 Difference]: Finished difference Result 50 states and 91 transitions. [2021-12-15 14:07:27,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 14:07:27,386 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-12-15 14:07:27,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 14:07:27,387 INFO L225 Difference]: With dead ends: 50 [2021-12-15 14:07:27,388 INFO L226 Difference]: Without dead ends: 48 [2021-12-15 14:07:27,389 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 14:07:27,390 INFO L933 BasicCegarLoop]: 91 mSDtfsCounter, 86 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 14:07:27,390 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [86 Valid, 91 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 14:07:27,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2021-12-15 14:07:27,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2021-12-15 14:07:27,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 47 states have (on average 1.8936170212765957) internal successors, (89), 47 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:07:27,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 89 transitions. [2021-12-15 14:07:27,397 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 89 transitions. Word has length 6 [2021-12-15 14:07:27,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 14:07:27,397 INFO L470 AbstractCegarLoop]: Abstraction has 48 states and 89 transitions. [2021-12-15 14:07:27,397 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:07:27,398 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 89 transitions. [2021-12-15 14:07:27,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-12-15 14:07:27,398 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 14:07:27,398 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 14:07:27,405 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-12-15 14:07:27,603 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-15 14:07:27,604 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-15 14:07:27,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 14:07:27,604 INFO L85 PathProgramCache]: Analyzing trace with hash 792943379, now seen corresponding path program 1 times [2021-12-15 14:07:27,605 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 14:07:27,606 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [942249396] [2021-12-15 14:07:27,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:07:27,606 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 14:07:27,606 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 14:07:27,607 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) [2021-12-15 14:07:27,608 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-12-15 14:07:27,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 14:07:27,653 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-15 14:07:27,654 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 14:07:27,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 14:07:27,710 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 14:07:27,710 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-15 14:07:27,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [942249396] [2021-12-15 14:07:27,710 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [942249396] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 14:07:27,710 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 14:07:27,710 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 14:07:27,711 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541396780] [2021-12-15 14:07:27,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 14:07:27,711 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 14:07:27,711 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-15 14:07:27,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 14:07:27,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 14:07:27,712 INFO L87 Difference]: Start difference. First operand 48 states and 89 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:07:27,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 14:07:27,728 INFO L93 Difference]: Finished difference Result 93 states and 173 transitions. [2021-12-15 14:07:27,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 14:07:27,728 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-12-15 14:07:27,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 14:07:27,729 INFO L225 Difference]: With dead ends: 93 [2021-12-15 14:07:27,729 INFO L226 Difference]: Without dead ends: 93 [2021-12-15 14:07:27,730 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 14:07:27,730 INFO L933 BasicCegarLoop]: 90 mSDtfsCounter, 68 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 14:07:27,731 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [68 Valid, 174 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 14:07:27,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2021-12-15 14:07:27,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 63. [2021-12-15 14:07:27,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 62 states have (on average 1.903225806451613) internal successors, (118), 62 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:07:27,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 118 transitions. [2021-12-15 14:07:27,740 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 118 transitions. Word has length 21 [2021-12-15 14:07:27,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 14:07:27,741 INFO L470 AbstractCegarLoop]: Abstraction has 63 states and 118 transitions. [2021-12-15 14:07:27,741 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:07:27,741 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 118 transitions. [2021-12-15 14:07:27,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-12-15 14:07:27,742 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 14:07:27,742 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 14:07:27,751 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-12-15 14:07:27,949 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-15 14:07:27,950 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-15 14:07:27,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 14:07:27,950 INFO L85 PathProgramCache]: Analyzing trace with hash 792950571, now seen corresponding path program 1 times [2021-12-15 14:07:27,951 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 14:07:27,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1587797562] [2021-12-15 14:07:27,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:07:27,952 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 14:07:27,952 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 14:07:27,953 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) [2021-12-15 14:07:27,961 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-12-15 14:07:27,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 14:07:27,990 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-15 14:07:27,991 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 14:07:28,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 14:07:28,034 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 14:07:28,034 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-15 14:07:28,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1587797562] [2021-12-15 14:07:28,037 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1587797562] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 14:07:28,038 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 14:07:28,038 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 14:07:28,038 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600594859] [2021-12-15 14:07:28,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 14:07:28,039 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 14:07:28,039 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-15 14:07:28,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 14:07:28,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 14:07:28,039 INFO L87 Difference]: Start difference. First operand 63 states and 118 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:07:28,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 14:07:28,067 INFO L93 Difference]: Finished difference Result 94 states and 173 transitions. [2021-12-15 14:07:28,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 14:07:28,067 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-12-15 14:07:28,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 14:07:28,068 INFO L225 Difference]: With dead ends: 94 [2021-12-15 14:07:28,068 INFO L226 Difference]: Without dead ends: 94 [2021-12-15 14:07:28,068 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 14:07:28,074 INFO L933 BasicCegarLoop]: 142 mSDtfsCounter, 71 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 224 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 14:07:28,074 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [71 Valid, 224 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 14:07:28,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2021-12-15 14:07:28,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 92. [2021-12-15 14:07:28,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 91 states have (on average 1.89010989010989) internal successors, (172), 91 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:07:28,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 172 transitions. [2021-12-15 14:07:28,081 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 172 transitions. Word has length 21 [2021-12-15 14:07:28,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 14:07:28,081 INFO L470 AbstractCegarLoop]: Abstraction has 92 states and 172 transitions. [2021-12-15 14:07:28,081 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:07:28,081 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 172 transitions. [2021-12-15 14:07:28,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-12-15 14:07:28,082 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 14:07:28,082 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 14:07:28,090 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-12-15 14:07:28,288 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-15 14:07:28,288 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-15 14:07:28,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 14:07:28,289 INFO L85 PathProgramCache]: Analyzing trace with hash -795404523, now seen corresponding path program 1 times [2021-12-15 14:07:28,289 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 14:07:28,290 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1770211615] [2021-12-15 14:07:28,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:07:28,290 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 14:07:28,290 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 14:07:28,292 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) [2021-12-15 14:07:28,294 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-12-15 14:07:28,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 14:07:28,348 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-15 14:07:28,350 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 14:07:28,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 14:07:28,422 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 14:07:28,422 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-15 14:07:28,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1770211615] [2021-12-15 14:07:28,423 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1770211615] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 14:07:28,423 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 14:07:28,423 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 14:07:28,423 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494561864] [2021-12-15 14:07:28,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 14:07:28,423 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 14:07:28,423 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-15 14:07:28,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 14:07:28,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 14:07:28,424 INFO L87 Difference]: Start difference. First operand 92 states and 172 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:07:28,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 14:07:28,432 INFO L93 Difference]: Finished difference Result 96 states and 173 transitions. [2021-12-15 14:07:28,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 14:07:28,433 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-12-15 14:07:28,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 14:07:28,434 INFO L225 Difference]: With dead ends: 96 [2021-12-15 14:07:28,434 INFO L226 Difference]: Without dead ends: 96 [2021-12-15 14:07:28,434 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 14:07:28,435 INFO L933 BasicCegarLoop]: 115 mSDtfsCounter, 69 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 14:07:28,435 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 198 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 14:07:28,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2021-12-15 14:07:28,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 94. [2021-12-15 14:07:28,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 93 states have (on average 1.8494623655913978) internal successors, (172), 93 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:07:28,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 172 transitions. [2021-12-15 14:07:28,456 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 172 transitions. Word has length 21 [2021-12-15 14:07:28,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 14:07:28,456 INFO L470 AbstractCegarLoop]: Abstraction has 94 states and 172 transitions. [2021-12-15 14:07:28,456 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:07:28,456 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 172 transitions. [2021-12-15 14:07:28,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-12-15 14:07:28,457 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 14:07:28,457 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 14:07:28,481 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-12-15 14:07:28,657 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-15 14:07:28,658 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-15 14:07:28,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 14:07:28,660 INFO L85 PathProgramCache]: Analyzing trace with hash -795397331, now seen corresponding path program 1 times [2021-12-15 14:07:28,660 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 14:07:28,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2096138547] [2021-12-15 14:07:28,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:07:28,660 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 14:07:28,660 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 14:07:28,661 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-15 14:07:28,663 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-12-15 14:07:28,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 14:07:28,700 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-15 14:07:28,701 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 14:07:28,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 14:07:28,745 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 14:07:28,745 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-15 14:07:28,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2096138547] [2021-12-15 14:07:28,745 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2096138547] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 14:07:28,746 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 14:07:28,746 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 14:07:28,746 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925592089] [2021-12-15 14:07:28,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 14:07:28,746 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 14:07:28,747 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-15 14:07:28,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 14:07:28,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 14:07:28,747 INFO L87 Difference]: Start difference. First operand 94 states and 172 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:07:28,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 14:07:28,768 INFO L93 Difference]: Finished difference Result 127 states and 228 transitions. [2021-12-15 14:07:28,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 14:07:28,768 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-12-15 14:07:28,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 14:07:28,769 INFO L225 Difference]: With dead ends: 127 [2021-12-15 14:07:28,769 INFO L226 Difference]: Without dead ends: 127 [2021-12-15 14:07:28,769 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 14:07:28,770 INFO L933 BasicCegarLoop]: 92 mSDtfsCounter, 70 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 14:07:28,770 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [70 Valid, 125 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 14:07:28,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2021-12-15 14:07:28,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 125. [2021-12-15 14:07:28,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 124 states have (on average 1.8306451612903225) internal successors, (227), 124 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:07:28,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 227 transitions. [2021-12-15 14:07:28,775 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 227 transitions. Word has length 21 [2021-12-15 14:07:28,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 14:07:28,776 INFO L470 AbstractCegarLoop]: Abstraction has 125 states and 227 transitions. [2021-12-15 14:07:28,776 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:07:28,776 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 227 transitions. [2021-12-15 14:07:28,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-12-15 14:07:28,777 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 14:07:28,777 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 14:07:28,785 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-12-15 14:07:28,985 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-15 14:07:28,987 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-15 14:07:28,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 14:07:28,988 INFO L85 PathProgramCache]: Analyzing trace with hash -1816465685, now seen corresponding path program 1 times [2021-12-15 14:07:28,988 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 14:07:28,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [983316083] [2021-12-15 14:07:28,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:07:28,989 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 14:07:28,989 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 14:07:28,990 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-15 14:07:29,016 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-12-15 14:07:29,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-15 14:07:29,021 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-15 14:07:29,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-15 14:07:29,054 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-12-15 14:07:29,055 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-15 14:07:29,055 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (1 of 2 remaining) [2021-12-15 14:07:29,084 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (0 of 2 remaining) [2021-12-15 14:07:29,106 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-12-15 14:07:29,291 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-15 14:07:29,293 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2021-12-15 14:07:29,295 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-15 14:07:29,327 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 02:07:29 BoogieIcfgContainer [2021-12-15 14:07:29,327 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-15 14:07:29,328 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-15 14:07:29,328 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-15 14:07:29,328 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-15 14:07:29,328 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 02:07:26" (3/4) ... [2021-12-15 14:07:29,330 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-15 14:07:29,330 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-15 14:07:29,331 INFO L158 Benchmark]: Toolchain (without parser) took 3204.22ms. Allocated memory was 46.1MB in the beginning and 88.1MB in the end (delta: 41.9MB). Free memory was 21.1MB in the beginning and 38.1MB in the end (delta: -17.0MB). Peak memory consumption was 23.4MB. Max. memory is 16.1GB. [2021-12-15 14:07:29,331 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 46.1MB. Free memory was 27.0MB in the beginning and 26.9MB in the end (delta: 50.1kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 14:07:29,331 INFO L158 Benchmark]: CACSL2BoogieTranslator took 282.37ms. Allocated memory was 46.1MB in the beginning and 67.1MB in the end (delta: 21.0MB). Free memory was 20.9MB in the beginning and 48.9MB in the end (delta: -28.0MB). Peak memory consumption was 5.6MB. Max. memory is 16.1GB. [2021-12-15 14:07:29,331 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.61ms. Allocated memory is still 67.1MB. Free memory was 48.9MB in the beginning and 47.1MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-15 14:07:29,331 INFO L158 Benchmark]: Boogie Preprocessor took 39.41ms. Allocated memory is still 67.1MB. Free memory was 46.9MB in the beginning and 45.5MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-15 14:07:29,332 INFO L158 Benchmark]: RCFGBuilder took 345.94ms. Allocated memory is still 67.1MB. Free memory was 45.5MB in the beginning and 32.8MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-12-15 14:07:29,332 INFO L158 Benchmark]: TraceAbstraction took 2493.66ms. Allocated memory was 67.1MB in the beginning and 88.1MB in the end (delta: 21.0MB). Free memory was 32.3MB in the beginning and 38.1MB in the end (delta: -5.8MB). Peak memory consumption was 14.9MB. Max. memory is 16.1GB. [2021-12-15 14:07:29,332 INFO L158 Benchmark]: Witness Printer took 2.39ms. Allocated memory is still 88.1MB. Free memory is still 38.1MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 14:07:29,333 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 46.1MB. Free memory was 27.0MB in the beginning and 26.9MB in the end (delta: 50.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 282.37ms. Allocated memory was 46.1MB in the beginning and 67.1MB in the end (delta: 21.0MB). Free memory was 20.9MB in the beginning and 48.9MB in the end (delta: -28.0MB). Peak memory consumption was 5.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 35.61ms. Allocated memory is still 67.1MB. Free memory was 48.9MB in the beginning and 47.1MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 39.41ms. Allocated memory is still 67.1MB. Free memory was 46.9MB in the beginning and 45.5MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 345.94ms. Allocated memory is still 67.1MB. Free memory was 45.5MB in the beginning and 32.8MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 2493.66ms. Allocated memory was 67.1MB in the beginning and 88.1MB in the end (delta: 21.0MB). Free memory was 32.3MB in the beginning and 38.1MB in the end (delta: -5.8MB). Peak memory consumption was 14.9MB. Max. memory is 16.1GB. * Witness Printer took 2.39ms. Allocated memory is still 88.1MB. Free memory is still 38.1MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 219]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 219. 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; [L51] int cond; [L53] COND TRUE 1 [L54] cond = __VERIFIER_nondet_int() [L55] COND FALSE !(cond == 0) [L58] lk1 = 0 [L60] lk2 = 0 [L62] lk3 = 0 [L64] lk4 = 0 [L66] lk5 = 0 [L68] lk6 = 0 [L70] lk7 = 0 [L72] lk8 = 0 [L74] lk9 = 0 [L76] lk10 = 0 [L78] lk11 = 0 [L80] lk12 = 0 [L82] lk13 = 0 [L84] lk14 = 0 VAL [cond=2147483648, lk1=0, lk10=0, lk11=0, lk12=0, lk13=0, lk14=0, lk2=0, lk3=0, lk4=0, lk5=0, lk6=0, lk7=0, lk8=0, lk9=0] [L88] COND FALSE !(p1 != 0) VAL [cond=2147483648, lk1=0, lk10=0, lk11=0, lk12=0, lk13=0, lk14=0, lk2=0, lk3=0, lk4=0, lk5=0, lk6=0, lk7=0, lk8=0, lk9=0, p1=0] [L92] COND FALSE !(p2 != 0) VAL [cond=2147483648, lk1=0, lk10=0, lk11=0, lk12=0, lk13=0, lk14=0, lk2=0, lk3=0, lk4=0, lk5=0, lk6=0, lk7=0, lk8=0, lk9=0, p1=0, p2=0] [L96] COND FALSE !(p3 != 0) VAL [cond=2147483648, lk1=0, lk10=0, lk11=0, lk12=0, lk13=0, lk14=0, lk2=0, lk3=0, lk4=0, lk5=0, lk6=0, lk7=0, lk8=0, lk9=0, p1=0, p2=0, p3=0] [L100] COND TRUE p4 != 0 [L101] lk4 = 1 VAL [cond=2147483648, lk1=0, lk10=0, lk11=0, lk12=0, lk13=0, lk14=0, lk2=0, lk3=0, lk4=1, lk5=0, lk6=0, lk7=0, lk8=0, lk9=0, p1=0, p2=0, p3=0, p4=2] [L104] COND TRUE p5 != 0 [L105] lk5 = 1 VAL [cond=2147483648, lk1=0, lk10=0, lk11=0, lk12=0, lk13=0, lk14=0, lk2=0, lk3=0, lk4=1, lk5=1, lk6=0, lk7=0, lk8=0, lk9=0, p1=0, p2=0, p3=0, p4=2, p5=2] [L108] COND TRUE p6 != 0 [L109] lk6 = 1 VAL [cond=2147483648, lk1=0, lk10=0, lk11=0, lk12=0, lk13=0, lk14=0, lk2=0, lk3=0, lk4=1, lk5=1, lk6=1, lk7=0, lk8=0, lk9=0, p1=0, p2=0, p3=0, p4=2, p5=2, p6=2] [L112] COND TRUE p7 != 0 [L113] lk7 = 1 VAL [cond=2147483648, lk1=0, lk10=0, lk11=0, lk12=0, lk13=0, lk14=0, lk2=0, lk3=0, lk4=1, lk5=1, lk6=1, lk7=1, lk8=0, lk9=0, p1=0, p2=0, p3=0, p4=2, p5=2, p6=2, p7=2] [L116] COND TRUE p8 != 0 [L117] lk8 = 1 VAL [cond=2147483648, lk1=0, lk10=0, lk11=0, lk12=0, lk13=0, lk14=0, lk2=0, lk3=0, lk4=1, lk5=1, lk6=1, lk7=1, lk8=1, lk9=0, p1=0, p2=0, p3=0, p4=2, p5=2, p6=2, p7=2, p8=2] [L120] COND TRUE p9 != 0 [L121] lk9 = 1 VAL [cond=2147483648, lk1=0, lk10=0, lk11=0, lk12=0, lk13=0, lk14=0, lk2=0, lk3=0, lk4=1, lk5=1, lk6=1, lk7=1, lk8=1, lk9=1, p1=0, p2=0, p3=0, p4=2, p5=2, p6=2, p7=2, p8=2, p9=2] [L124] COND TRUE p10 != 0 [L125] lk10 = 1 VAL [cond=2147483648, lk1=0, lk10=1, lk11=0, lk12=0, lk13=0, lk14=0, lk2=0, lk3=0, lk4=1, lk5=1, lk6=1, lk7=1, lk8=1, lk9=1, p1=0, p10=2, p2=0, p3=0, p4=2, p5=2, p6=2, p7=2, p8=2, p9=2] [L128] COND FALSE !(p11 != 0) VAL [cond=2147483648, lk1=0, lk10=1, lk11=0, lk12=0, lk13=0, lk14=0, lk2=0, lk3=0, lk4=1, lk5=1, lk6=1, lk7=1, lk8=1, lk9=1, p1=0, p10=2, p11=0, p2=0, p3=0, p4=2, p5=2, p6=2, p7=2, p8=2, p9=2] [L132] COND TRUE p12 != 0 [L133] lk12 = 1 VAL [cond=2147483648, lk1=0, lk10=1, lk11=0, lk12=1, lk13=0, lk14=0, lk2=0, lk3=0, lk4=1, lk5=1, lk6=1, lk7=1, lk8=1, lk9=1, p1=0, p10=2, p11=0, p12=2, p2=0, p3=0, p4=2, p5=2, p6=2, p7=2, p8=2, p9=2] [L136] COND TRUE p13 != 0 [L137] lk13 = 1 VAL [cond=2147483648, lk1=0, lk10=1, lk11=0, lk12=1, lk13=1, lk14=0, lk2=0, lk3=0, lk4=1, lk5=1, lk6=1, lk7=1, lk8=1, lk9=1, p1=0, p10=2, p11=0, p12=2, p13=2, p2=0, p3=0, p4=2, p5=2, p6=2, p7=2, p8=2, p9=2] [L140] COND TRUE p14 != 0 [L141] lk14 = 1 VAL [cond=2147483648, lk1=0, lk10=1, lk11=0, lk12=1, lk13=1, lk14=1, lk2=0, lk3=0, lk4=1, lk5=1, lk6=1, lk7=1, lk8=1, lk9=1, p1=0, p10=2, p11=0, p12=2, p13=2, p14=2, p2=0, p3=0, p4=2, p5=2, p6=2, p7=2, p8=2, p9=2] [L146] COND FALSE !(p1 != 0) VAL [cond=2147483648, lk1=0, lk10=1, lk11=0, lk12=1, lk13=1, lk14=1, lk2=0, lk3=0, lk4=1, lk5=1, lk6=1, lk7=1, lk8=1, lk9=1, p1=0, p10=2, p11=0, p12=2, p13=2, p14=2, p2=0, p3=0, p4=2, p5=2, p6=2, p7=2, p8=2, p9=2] [L151] COND FALSE !(p2 != 0) VAL [cond=2147483648, lk1=0, lk10=1, lk11=0, lk12=1, lk13=1, lk14=1, lk2=0, lk3=0, lk4=1, lk5=1, lk6=1, lk7=1, lk8=1, lk9=1, p1=0, p10=2, p11=0, p12=2, p13=2, p14=2, p2=0, p3=0, p4=2, p5=2, p6=2, p7=2, p8=2, p9=2] [L219] reach_error() VAL [cond=2147483648, lk1=0, lk10=1, lk11=0, lk12=1, lk13=1, lk14=1, lk2=0, lk3=0, lk4=1, lk5=1, lk6=1, lk7=1, lk8=1, lk9=1, p1=0, p10=2, p11=0, p12=2, p13=2, p14=2, p2=0, p3=0, p4=2, p5=2, p6=2, p7=2, p8=2, p9=2] - 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 1 procedures, 53 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 2.4s, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 364 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 364 mSDsluCounter, 906 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 282 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 22 IncrementalHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 624 mSDtfsCounter, 22 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 89 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=125occurred in iteration=6, InterpolantAutomatonStates: 17, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 36 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 116 NumberOfCodeBlocks, 116 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 89 ConstructedInterpolants, 0 QuantifiedInterpolants, 239 SizeOfPredicates, 0 NumberOfNonLiveVariables, 275 ConjunctsInSsa, 11 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-12-15 14:07:29,355 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... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample