./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/locks/test_locks_6.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 5fbdf5bf Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/locks/test_locks_6.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 8a6bc1adbcafb13db44c5d4b4826990150e2f336 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5fbdf5b [2021-08-30 19:12:12,913 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-30 19:12:12,917 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-30 19:12:12,942 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-30 19:12:12,943 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-30 19:12:12,943 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-30 19:12:12,945 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-30 19:12:12,946 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-30 19:12:12,947 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-30 19:12:12,948 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-30 19:12:12,949 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-30 19:12:12,950 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-30 19:12:12,950 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-30 19:12:12,951 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-30 19:12:12,952 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-30 19:12:12,953 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-30 19:12:12,953 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-30 19:12:12,954 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-30 19:12:12,955 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-30 19:12:12,956 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-30 19:12:12,957 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-30 19:12:12,958 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-30 19:12:12,959 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-30 19:12:12,960 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-30 19:12:12,962 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-30 19:12:12,962 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-30 19:12:12,962 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-30 19:12:12,963 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-30 19:12:12,963 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-30 19:12:12,964 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-30 19:12:12,964 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-30 19:12:12,964 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-30 19:12:12,965 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-30 19:12:12,965 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-30 19:12:12,966 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-30 19:12:12,966 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-30 19:12:12,967 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-30 19:12:12,967 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-30 19:12:12,967 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-30 19:12:12,968 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-30 19:12:12,968 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-30 19:12:12,969 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-08-30 19:12:12,984 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-30 19:12:12,985 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-30 19:12:12,985 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-30 19:12:12,985 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-30 19:12:12,986 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-30 19:12:12,986 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-30 19:12:12,986 INFO L138 SettingsManager]: * Use SBE=true [2021-08-30 19:12:12,986 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-30 19:12:12,987 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-30 19:12:12,987 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-30 19:12:12,987 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-30 19:12:12,987 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-30 19:12:12,987 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-30 19:12:12,987 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-08-30 19:12:12,988 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-08-30 19:12:12,988 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-08-30 19:12:12,988 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-30 19:12:12,988 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-08-30 19:12:12,988 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-30 19:12:12,988 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-30 19:12:12,989 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-30 19:12:12,989 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-30 19:12:12,989 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-30 19:12:12,989 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-30 19:12:12,989 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-30 19:12:12,990 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-30 19:12:12,990 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-30 19:12:12,990 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-30 19:12:12,990 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-30 19:12:12,990 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8a6bc1adbcafb13db44c5d4b4826990150e2f336 [2021-08-30 19:12:13,238 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-30 19:12:13,264 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-30 19:12:13,266 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-30 19:12:13,267 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-30 19:12:13,268 INFO L275 PluginConnector]: CDTParser initialized [2021-08-30 19:12:13,269 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/locks/test_locks_6.c [2021-08-30 19:12:13,323 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/754c6d83b/c7c909aada244d6cbe07e3a06830b1fe/FLAG2c9defd72 [2021-08-30 19:12:13,687 INFO L306 CDTParser]: Found 1 translation units. [2021-08-30 19:12:13,688 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/locks/test_locks_6.c [2021-08-30 19:12:13,693 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/754c6d83b/c7c909aada244d6cbe07e3a06830b1fe/FLAG2c9defd72 [2021-08-30 19:12:13,704 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/754c6d83b/c7c909aada244d6cbe07e3a06830b1fe [2021-08-30 19:12:13,706 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-30 19:12:13,708 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-30 19:12:13,710 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-30 19:12:13,710 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-30 19:12:13,712 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-30 19:12:13,713 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 07:12:13" (1/1) ... [2021-08-30 19:12:13,713 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@180b49d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:12:13, skipping insertion in model container [2021-08-30 19:12:13,713 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 07:12:13" (1/1) ... [2021-08-30 19:12:13,718 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-30 19:12:13,731 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-30 19:12:13,857 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/locks/test_locks_6.c[2544,2557] [2021-08-30 19:12:13,859 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-30 19:12:13,864 INFO L203 MainTranslator]: Completed pre-run [2021-08-30 19:12:13,924 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/locks/test_locks_6.c[2544,2557] [2021-08-30 19:12:13,927 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-30 19:12:13,936 INFO L208 MainTranslator]: Completed translation [2021-08-30 19:12:13,937 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:12:13 WrapperNode [2021-08-30 19:12:13,937 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-30 19:12:13,939 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-30 19:12:13,940 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-30 19:12:13,940 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-30 19:12:13,947 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:12:13" (1/1) ... [2021-08-30 19:12:13,947 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:12:13" (1/1) ... [2021-08-30 19:12:13,958 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:12:13" (1/1) ... [2021-08-30 19:12:13,959 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:12:13" (1/1) ... [2021-08-30 19:12:13,970 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:12:13" (1/1) ... [2021-08-30 19:12:13,976 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:12:13" (1/1) ... [2021-08-30 19:12:13,984 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:12:13" (1/1) ... [2021-08-30 19:12:13,989 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-30 19:12:13,990 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-30 19:12:13,990 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-30 19:12:13,990 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-30 19:12:13,991 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:12:13" (1/1) ... [2021-08-30 19:12:13,995 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-30 19:12:14,001 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-30 19:12:14,014 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-08-30 19:12:14,028 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-08-30 19:12:14,052 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-08-30 19:12:14,052 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-30 19:12:14,053 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-08-30 19:12:14,053 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-08-30 19:12:14,053 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-08-30 19:12:14,053 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-08-30 19:12:14,053 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-08-30 19:12:14,054 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-30 19:12:14,054 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-08-30 19:12:14,054 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-08-30 19:12:14,054 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-08-30 19:12:14,054 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-30 19:12:14,055 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-30 19:12:14,055 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-30 19:12:14,055 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-08-30 19:12:14,055 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-30 19:12:14,155 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-30 19:12:14,155 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-08-30 19:12:14,156 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 07:12:14 BoogieIcfgContainer [2021-08-30 19:12:14,156 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-30 19:12:14,157 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-30 19:12:14,157 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-30 19:12:14,159 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-30 19:12:14,159 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 07:12:13" (1/3) ... [2021-08-30 19:12:14,160 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49f638d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 07:12:14, skipping insertion in model container [2021-08-30 19:12:14,160 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:12:13" (2/3) ... [2021-08-30 19:12:14,160 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49f638d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 07:12:14, skipping insertion in model container [2021-08-30 19:12:14,160 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 07:12:14" (3/3) ... [2021-08-30 19:12:14,161 INFO L111 eAbstractionObserver]: Analyzing ICFG test_locks_6.c [2021-08-30 19:12:14,164 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-30 19:12:14,164 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-08-30 19:12:14,195 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-30 19:12:14,202 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-08-30 19:12:14,202 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-08-30 19:12:14,213 INFO L276 IsEmpty]: Start isEmpty. Operand has 34 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 29 states have internal predecessors, (50), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-08-30 19:12:14,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-08-30 19:12:14,218 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 19:12:14,219 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 19:12:14,219 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr1ENSURES_VIOLATIONMEMORY_LEAK === [mainErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr1ENSURES_VIOLATIONMEMORY_LEAK] === [2021-08-30 19:12:14,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 19:12:14,223 INFO L82 PathProgramCache]: Analyzing trace with hash -1067342593, now seen corresponding path program 1 times [2021-08-30 19:12:14,236 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 19:12:14,236 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256810905] [2021-08-30 19:12:14,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:12:14,237 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 19:12:14,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:12:14,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:12:14,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:12:14,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 19:12:14,447 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 19:12:14,447 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256810905] [2021-08-30 19:12:14,447 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256810905] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 19:12:14,447 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 19:12:14,448 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-30 19:12:14,449 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708564048] [2021-08-30 19:12:14,452 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-30 19:12:14,452 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 19:12:14,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-30 19:12:14,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-30 19:12:14,469 INFO L87 Difference]: Start difference. First operand has 34 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 29 states have internal predecessors, (50), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 19:12:14,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 19:12:14,577 INFO L93 Difference]: Finished difference Result 33 states and 50 transitions. [2021-08-30 19:12:14,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-30 19:12:14,579 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 9 [2021-08-30 19:12:14,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 19:12:14,584 INFO L225 Difference]: With dead ends: 33 [2021-08-30 19:12:14,584 INFO L226 Difference]: Without dead ends: 28 [2021-08-30 19:12:14,588 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 34.62ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-30 19:12:14,590 INFO L928 BasicCegarLoop]: 4 mSDtfsCounter, 43 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 80.38ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.09ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 93.54ms IncrementalHoareTripleChecker+Time [2021-08-30 19:12:14,591 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 5 Invalid, 51 Unknown, 0 Unchecked, 1.09ms Time], IncrementalHoareTripleChecker [1 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 93.54ms Time] [2021-08-30 19:12:14,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-08-30 19:12:14,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2021-08-30 19:12:14,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 24 states have (on average 1.75) internal successors, (42), 24 states have internal predecessors, (42), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 19:12:14,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 45 transitions. [2021-08-30 19:12:14,619 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 45 transitions. Word has length 9 [2021-08-30 19:12:14,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 19:12:14,620 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 45 transitions. [2021-08-30 19:12:14,620 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 19:12:14,620 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 45 transitions. [2021-08-30 19:12:14,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-08-30 19:12:14,620 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 19:12:14,621 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 19:12:14,621 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-30 19:12:14,621 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr1ENSURES_VIOLATIONMEMORY_LEAK] === [2021-08-30 19:12:14,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 19:12:14,623 INFO L82 PathProgramCache]: Analyzing trace with hash -1993066942, now seen corresponding path program 1 times [2021-08-30 19:12:14,623 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 19:12:14,623 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809094810] [2021-08-30 19:12:14,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:12:14,624 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 19:12:14,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:12:14,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:12:14,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:12:14,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 19:12:14,717 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 19:12:14,718 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809094810] [2021-08-30 19:12:14,718 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809094810] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 19:12:14,718 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 19:12:14,718 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-30 19:12:14,718 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657962203] [2021-08-30 19:12:14,724 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-30 19:12:14,725 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 19:12:14,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-30 19:12:14,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-30 19:12:14,725 INFO L87 Difference]: Start difference. First operand 28 states and 45 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 19:12:14,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 19:12:14,875 INFO L93 Difference]: Finished difference Result 49 states and 81 transitions. [2021-08-30 19:12:14,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-30 19:12:14,876 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2021-08-30 19:12:14,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 19:12:14,877 INFO L225 Difference]: With dead ends: 49 [2021-08-30 19:12:14,877 INFO L226 Difference]: Without dead ends: 49 [2021-08-30 19:12:14,880 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 36.49ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-30 19:12:14,881 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 100 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 98.29ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.01ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 118.17ms IncrementalHoareTripleChecker+Time [2021-08-30 19:12:14,881 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [100 Valid, 7 Invalid, 91 Unknown, 0 Unchecked, 3.01ms Time], IncrementalHoareTripleChecker [2 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 118.17ms Time] [2021-08-30 19:12:14,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2021-08-30 19:12:14,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 35. [2021-08-30 19:12:14,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 31 states have (on average 1.7741935483870968) internal successors, (55), 31 states have internal predecessors, (55), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 19:12:14,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 58 transitions. [2021-08-30 19:12:14,891 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 58 transitions. Word has length 17 [2021-08-30 19:12:14,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 19:12:14,891 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 58 transitions. [2021-08-30 19:12:14,892 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 19:12:14,892 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 58 transitions. [2021-08-30 19:12:14,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-08-30 19:12:14,893 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 19:12:14,894 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 19:12:14,894 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-30 19:12:14,896 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr1ENSURES_VIOLATIONMEMORY_LEAK] === [2021-08-30 19:12:14,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 19:12:14,897 INFO L82 PathProgramCache]: Analyzing trace with hash -1313008572, now seen corresponding path program 1 times [2021-08-30 19:12:14,897 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 19:12:14,897 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711998782] [2021-08-30 19:12:14,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:12:14,898 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 19:12:14,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:12:14,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:12:14,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:12:14,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 19:12:14,942 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 19:12:14,942 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711998782] [2021-08-30 19:12:14,942 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711998782] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 19:12:14,942 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 19:12:14,942 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-30 19:12:14,942 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196220294] [2021-08-30 19:12:14,943 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-30 19:12:14,943 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 19:12:14,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-30 19:12:14,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-30 19:12:14,944 INFO L87 Difference]: Start difference. First operand 35 states and 58 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 19:12:15,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 19:12:15,049 INFO L93 Difference]: Finished difference Result 49 states and 79 transitions. [2021-08-30 19:12:15,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-30 19:12:15,050 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2021-08-30 19:12:15,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 19:12:15,052 INFO L225 Difference]: With dead ends: 49 [2021-08-30 19:12:15,052 INFO L226 Difference]: Without dead ends: 49 [2021-08-30 19:12:15,052 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 29.23ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-30 19:12:15,057 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 88 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 63.17ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.20ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 77.66ms IncrementalHoareTripleChecker+Time [2021-08-30 19:12:15,058 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [88 Valid, 7 Invalid, 99 Unknown, 0 Unchecked, 3.20ms Time], IncrementalHoareTripleChecker [3 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 77.66ms Time] [2021-08-30 19:12:15,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2021-08-30 19:12:15,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 47. [2021-08-30 19:12:15,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 43 states have (on average 1.744186046511628) internal successors, (75), 43 states have internal predecessors, (75), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 19:12:15,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 78 transitions. [2021-08-30 19:12:15,067 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 78 transitions. Word has length 17 [2021-08-30 19:12:15,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 19:12:15,067 INFO L470 AbstractCegarLoop]: Abstraction has 47 states and 78 transitions. [2021-08-30 19:12:15,067 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 19:12:15,067 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 78 transitions. [2021-08-30 19:12:15,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-08-30 19:12:15,068 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 19:12:15,068 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 19:12:15,068 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-30 19:12:15,068 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr1ENSURES_VIOLATIONMEMORY_LEAK] === [2021-08-30 19:12:15,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 19:12:15,069 INFO L82 PathProgramCache]: Analyzing trace with hash -1655318379, now seen corresponding path program 1 times [2021-08-30 19:12:15,069 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 19:12:15,070 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451881669] [2021-08-30 19:12:15,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:12:15,070 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 19:12:15,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:12:15,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:12:15,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:12:15,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 19:12:15,136 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 19:12:15,136 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451881669] [2021-08-30 19:12:15,136 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451881669] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 19:12:15,136 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 19:12:15,136 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-30 19:12:15,137 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909600181] [2021-08-30 19:12:15,137 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-30 19:12:15,137 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 19:12:15,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-30 19:12:15,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-30 19:12:15,137 INFO L87 Difference]: Start difference. First operand 47 states and 78 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 19:12:15,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 19:12:15,262 INFO L93 Difference]: Finished difference Result 52 states and 81 transitions. [2021-08-30 19:12:15,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-30 19:12:15,262 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2021-08-30 19:12:15,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 19:12:15,263 INFO L225 Difference]: With dead ends: 52 [2021-08-30 19:12:15,263 INFO L226 Difference]: Without dead ends: 52 [2021-08-30 19:12:15,264 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 35.94ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-30 19:12:15,264 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 79 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 78.12ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.74ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 96.93ms IncrementalHoareTripleChecker+Time [2021-08-30 19:12:15,264 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [79 Valid, 7 Invalid, 107 Unknown, 0 Unchecked, 2.74ms Time], IncrementalHoareTripleChecker [2 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 96.93ms Time] [2021-08-30 19:12:15,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-08-30 19:12:15,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 50. [2021-08-30 19:12:15,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 46 states have (on average 1.673913043478261) internal successors, (77), 46 states have internal predecessors, (77), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 19:12:15,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 80 transitions. [2021-08-30 19:12:15,268 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 80 transitions. Word has length 18 [2021-08-30 19:12:15,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 19:12:15,268 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 80 transitions. [2021-08-30 19:12:15,268 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 19:12:15,269 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 80 transitions. [2021-08-30 19:12:15,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-08-30 19:12:15,269 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 19:12:15,269 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 19:12:15,269 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-30 19:12:15,270 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr1ENSURES_VIOLATIONMEMORY_LEAK] === [2021-08-30 19:12:15,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 19:12:15,270 INFO L82 PathProgramCache]: Analyzing trace with hash -2048345389, now seen corresponding path program 1 times [2021-08-30 19:12:15,270 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 19:12:15,270 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575327853] [2021-08-30 19:12:15,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:12:15,271 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 19:12:15,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:12:15,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:12:15,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:12:15,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 19:12:15,318 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 19:12:15,318 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575327853] [2021-08-30 19:12:15,318 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575327853] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 19:12:15,318 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 19:12:15,318 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-30 19:12:15,319 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496254640] [2021-08-30 19:12:15,319 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-30 19:12:15,319 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 19:12:15,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-30 19:12:15,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-30 19:12:15,319 INFO L87 Difference]: Start difference. First operand 50 states and 80 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 19:12:15,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 19:12:15,413 INFO L93 Difference]: Finished difference Result 89 states and 142 transitions. [2021-08-30 19:12:15,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-30 19:12:15,414 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2021-08-30 19:12:15,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 19:12:15,416 INFO L225 Difference]: With dead ends: 89 [2021-08-30 19:12:15,416 INFO L226 Difference]: Without dead ends: 89 [2021-08-30 19:12:15,416 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 28.71ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-30 19:12:15,417 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 95 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 53.23ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.27ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 68.13ms IncrementalHoareTripleChecker+Time [2021-08-30 19:12:15,417 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [95 Valid, 7 Invalid, 91 Unknown, 0 Unchecked, 1.27ms Time], IncrementalHoareTripleChecker [3 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 68.13ms Time] [2021-08-30 19:12:15,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2021-08-30 19:12:15,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 87. [2021-08-30 19:12:15,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 83 states have (on average 1.6626506024096386) internal successors, (138), 83 states have internal predecessors, (138), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 19:12:15,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 141 transitions. [2021-08-30 19:12:15,434 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 141 transitions. Word has length 18 [2021-08-30 19:12:15,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 19:12:15,435 INFO L470 AbstractCegarLoop]: Abstraction has 87 states and 141 transitions. [2021-08-30 19:12:15,436 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 19:12:15,436 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 141 transitions. [2021-08-30 19:12:15,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-08-30 19:12:15,436 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 19:12:15,436 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 19:12:15,436 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-30 19:12:15,437 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr1ENSURES_VIOLATIONMEMORY_LEAK] === [2021-08-30 19:12:15,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 19:12:15,437 INFO L82 PathProgramCache]: Analyzing trace with hash 1566563537, now seen corresponding path program 1 times [2021-08-30 19:12:15,437 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 19:12:15,437 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478619207] [2021-08-30 19:12:15,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:12:15,437 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 19:12:15,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:12:15,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:12:15,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:12:15,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 19:12:15,484 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 19:12:15,485 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478619207] [2021-08-30 19:12:15,485 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478619207] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 19:12:15,485 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 19:12:15,485 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-30 19:12:15,485 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154695674] [2021-08-30 19:12:15,486 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-30 19:12:15,486 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 19:12:15,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-30 19:12:15,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-30 19:12:15,486 INFO L87 Difference]: Start difference. First operand 87 states and 141 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 19:12:15,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 19:12:15,590 INFO L93 Difference]: Finished difference Result 109 states and 176 transitions. [2021-08-30 19:12:15,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-30 19:12:15,590 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2021-08-30 19:12:15,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 19:12:15,591 INFO L225 Difference]: With dead ends: 109 [2021-08-30 19:12:15,591 INFO L226 Difference]: Without dead ends: 109 [2021-08-30 19:12:15,591 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 30.24ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-30 19:12:15,593 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 62 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 68.57ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.97ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 82.13ms IncrementalHoareTripleChecker+Time [2021-08-30 19:12:15,595 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [62 Valid, 7 Invalid, 114 Unknown, 0 Unchecked, 0.97ms Time], IncrementalHoareTripleChecker [2 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 82.13ms Time] [2021-08-30 19:12:15,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2021-08-30 19:12:15,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 87. [2021-08-30 19:12:15,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 83 states have (on average 1.6385542168674698) internal successors, (136), 83 states have internal predecessors, (136), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 19:12:15,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 139 transitions. [2021-08-30 19:12:15,603 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 139 transitions. Word has length 18 [2021-08-30 19:12:15,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 19:12:15,604 INFO L470 AbstractCegarLoop]: Abstraction has 87 states and 139 transitions. [2021-08-30 19:12:15,604 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 19:12:15,604 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 139 transitions. [2021-08-30 19:12:15,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-08-30 19:12:15,606 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 19:12:15,606 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 19:12:15,606 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-08-30 19:12:15,606 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr1ENSURES_VIOLATIONMEMORY_LEAK] === [2021-08-30 19:12:15,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 19:12:15,607 INFO L82 PathProgramCache]: Analyzing trace with hash 926017401, now seen corresponding path program 1 times [2021-08-30 19:12:15,607 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 19:12:15,607 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133101832] [2021-08-30 19:12:15,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:12:15,607 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 19:12:15,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:12:15,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:12:15,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:12:15,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 19:12:15,660 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 19:12:15,660 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133101832] [2021-08-30 19:12:15,660 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133101832] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 19:12:15,660 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 19:12:15,661 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-30 19:12:15,661 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842631151] [2021-08-30 19:12:15,661 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-30 19:12:15,661 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 19:12:15,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-30 19:12:15,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-30 19:12:15,661 INFO L87 Difference]: Start difference. First operand 87 states and 139 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 19:12:15,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 19:12:15,737 INFO L93 Difference]: Finished difference Result 153 states and 246 transitions. [2021-08-30 19:12:15,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-30 19:12:15,737 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2021-08-30 19:12:15,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 19:12:15,738 INFO L225 Difference]: With dead ends: 153 [2021-08-30 19:12:15,738 INFO L226 Difference]: Without dead ends: 153 [2021-08-30 19:12:15,738 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 27.09ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-30 19:12:15,738 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 86 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 45.28ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.57ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 55.10ms IncrementalHoareTripleChecker+Time [2021-08-30 19:12:15,738 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [86 Valid, 7 Invalid, 87 Unknown, 0 Unchecked, 0.57ms Time], IncrementalHoareTripleChecker [2 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 55.10ms Time] [2021-08-30 19:12:15,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2021-08-30 19:12:15,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 119. [2021-08-30 19:12:15,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 115 states have (on average 1.617391304347826) internal successors, (186), 115 states have internal predecessors, (186), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 19:12:15,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 189 transitions. [2021-08-30 19:12:15,741 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 189 transitions. Word has length 19 [2021-08-30 19:12:15,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 19:12:15,742 INFO L470 AbstractCegarLoop]: Abstraction has 119 states and 189 transitions. [2021-08-30 19:12:15,742 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 19:12:15,742 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 189 transitions. [2021-08-30 19:12:15,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-08-30 19:12:15,742 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 19:12:15,742 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 19:12:15,742 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-08-30 19:12:15,743 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr1ENSURES_VIOLATIONMEMORY_LEAK] === [2021-08-30 19:12:15,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 19:12:15,743 INFO L82 PathProgramCache]: Analyzing trace with hash 1606075771, now seen corresponding path program 1 times [2021-08-30 19:12:15,743 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 19:12:15,743 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632121728] [2021-08-30 19:12:15,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:12:15,743 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 19:12:15,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:12:15,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:12:15,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:12:15,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 19:12:15,770 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 19:12:15,770 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632121728] [2021-08-30 19:12:15,770 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632121728] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 19:12:15,770 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 19:12:15,770 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-30 19:12:15,770 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031498724] [2021-08-30 19:12:15,771 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-30 19:12:15,771 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 19:12:15,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-30 19:12:15,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-30 19:12:15,771 INFO L87 Difference]: Start difference. First operand 119 states and 189 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 19:12:15,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 19:12:15,852 INFO L93 Difference]: Finished difference Result 161 states and 248 transitions. [2021-08-30 19:12:15,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-30 19:12:15,853 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2021-08-30 19:12:15,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 19:12:15,853 INFO L225 Difference]: With dead ends: 161 [2021-08-30 19:12:15,854 INFO L226 Difference]: Without dead ends: 161 [2021-08-30 19:12:15,854 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 22.86ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-30 19:12:15,854 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 76 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 52.04ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.48ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 65.03ms IncrementalHoareTripleChecker+Time [2021-08-30 19:12:15,854 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [76 Valid, 7 Invalid, 101 Unknown, 0 Unchecked, 0.48ms Time], IncrementalHoareTripleChecker [3 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 65.03ms Time] [2021-08-30 19:12:15,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2021-08-30 19:12:15,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 159. [2021-08-30 19:12:15,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 155 states have (on average 1.5741935483870968) internal successors, (244), 155 states have internal predecessors, (244), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 19:12:15,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 247 transitions. [2021-08-30 19:12:15,861 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 247 transitions. Word has length 19 [2021-08-30 19:12:15,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 19:12:15,862 INFO L470 AbstractCegarLoop]: Abstraction has 159 states and 247 transitions. [2021-08-30 19:12:15,862 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 19:12:15,865 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 247 transitions. [2021-08-30 19:12:15,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-08-30 19:12:15,869 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 19:12:15,869 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 19:12:15,869 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-08-30 19:12:15,869 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr1ENSURES_VIOLATIONMEMORY_LEAK] === [2021-08-30 19:12:15,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 19:12:15,870 INFO L82 PathProgramCache]: Analyzing trace with hash -1358016280, now seen corresponding path program 1 times [2021-08-30 19:12:15,870 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 19:12:15,870 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036953383] [2021-08-30 19:12:15,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:12:15,870 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 19:12:15,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:12:15,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:12:15,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:12:15,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 19:12:15,918 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 19:12:15,918 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036953383] [2021-08-30 19:12:15,918 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036953383] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 19:12:15,918 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 19:12:15,918 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-30 19:12:15,918 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932577640] [2021-08-30 19:12:15,919 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-30 19:12:15,919 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 19:12:15,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-30 19:12:15,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-30 19:12:15,920 INFO L87 Difference]: Start difference. First operand 159 states and 247 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 19:12:16,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 19:12:16,048 INFO L93 Difference]: Finished difference Result 167 states and 252 transitions. [2021-08-30 19:12:16,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-30 19:12:16,049 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2021-08-30 19:12:16,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 19:12:16,049 INFO L225 Difference]: With dead ends: 167 [2021-08-30 19:12:16,050 INFO L226 Difference]: Without dead ends: 167 [2021-08-30 19:12:16,050 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 52.77ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-30 19:12:16,050 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 77 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 82.45ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.09ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 93.73ms IncrementalHoareTripleChecker+Time [2021-08-30 19:12:16,050 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 7 Invalid, 99 Unknown, 0 Unchecked, 3.09ms Time], IncrementalHoareTripleChecker [2 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 93.73ms Time] [2021-08-30 19:12:16,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2021-08-30 19:12:16,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 165. [2021-08-30 19:12:16,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 161 states have (on average 1.5403726708074534) internal successors, (248), 161 states have internal predecessors, (248), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 19:12:16,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 251 transitions. [2021-08-30 19:12:16,053 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 251 transitions. Word has length 20 [2021-08-30 19:12:16,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 19:12:16,053 INFO L470 AbstractCegarLoop]: Abstraction has 165 states and 251 transitions. [2021-08-30 19:12:16,054 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 19:12:16,054 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 251 transitions. [2021-08-30 19:12:16,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-08-30 19:12:16,054 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 19:12:16,054 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 19:12:16,054 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-08-30 19:12:16,054 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr1ENSURES_VIOLATIONMEMORY_LEAK] === [2021-08-30 19:12:16,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 19:12:16,055 INFO L82 PathProgramCache]: Analyzing trace with hash -1751043290, now seen corresponding path program 1 times [2021-08-30 19:12:16,055 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 19:12:16,055 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810639747] [2021-08-30 19:12:16,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:12:16,055 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 19:12:16,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:12:16,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:12:16,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:12:16,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 19:12:16,086 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 19:12:16,087 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810639747] [2021-08-30 19:12:16,087 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810639747] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 19:12:16,087 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 19:12:16,087 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-30 19:12:16,087 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061668010] [2021-08-30 19:12:16,087 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-30 19:12:16,087 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 19:12:16,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-30 19:12:16,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-30 19:12:16,088 INFO L87 Difference]: Start difference. First operand 165 states and 251 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 19:12:16,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 19:12:16,179 INFO L93 Difference]: Finished difference Result 283 states and 428 transitions. [2021-08-30 19:12:16,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-30 19:12:16,180 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2021-08-30 19:12:16,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 19:12:16,181 INFO L225 Difference]: With dead ends: 283 [2021-08-30 19:12:16,181 INFO L226 Difference]: Without dead ends: 283 [2021-08-30 19:12:16,181 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 37.38ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-30 19:12:16,181 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 79 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 47.47ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.94ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 60.95ms IncrementalHoareTripleChecker+Time [2021-08-30 19:12:16,181 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [79 Valid, 7 Invalid, 85 Unknown, 0 Unchecked, 0.94ms Time], IncrementalHoareTripleChecker [2 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 60.95ms Time] [2021-08-30 19:12:16,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2021-08-30 19:12:16,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 233. [2021-08-30 19:12:16,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 229 states have (on average 1.502183406113537) internal successors, (344), 229 states have internal predecessors, (344), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 19:12:16,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 347 transitions. [2021-08-30 19:12:16,186 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 347 transitions. Word has length 20 [2021-08-30 19:12:16,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 19:12:16,186 INFO L470 AbstractCegarLoop]: Abstraction has 233 states and 347 transitions. [2021-08-30 19:12:16,186 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 19:12:16,186 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 347 transitions. [2021-08-30 19:12:16,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-08-30 19:12:16,187 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 19:12:16,187 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 19:12:16,187 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-08-30 19:12:16,187 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr1ENSURES_VIOLATIONMEMORY_LEAK] === [2021-08-30 19:12:16,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 19:12:16,187 INFO L82 PathProgramCache]: Analyzing trace with hash -1070984920, now seen corresponding path program 1 times [2021-08-30 19:12:16,188 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 19:12:16,188 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346176858] [2021-08-30 19:12:16,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:12:16,188 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 19:12:16,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:12:16,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:12:16,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:12:16,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 19:12:16,213 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 19:12:16,213 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346176858] [2021-08-30 19:12:16,213 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346176858] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 19:12:16,213 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 19:12:16,213 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-30 19:12:16,213 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138086918] [2021-08-30 19:12:16,213 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-30 19:12:16,214 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 19:12:16,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-30 19:12:16,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-30 19:12:16,214 INFO L87 Difference]: Start difference. First operand 233 states and 347 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 19:12:16,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 19:12:16,316 INFO L93 Difference]: Finished difference Result 307 states and 440 transitions. [2021-08-30 19:12:16,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-30 19:12:16,316 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2021-08-30 19:12:16,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 19:12:16,317 INFO L225 Difference]: With dead ends: 307 [2021-08-30 19:12:16,317 INFO L226 Difference]: Without dead ends: 307 [2021-08-30 19:12:16,318 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 24.04ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-30 19:12:16,318 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 70 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 70.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.49ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 82.48ms IncrementalHoareTripleChecker+Time [2021-08-30 19:12:16,318 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [70 Valid, 7 Invalid, 102 Unknown, 0 Unchecked, 0.49ms Time], IncrementalHoareTripleChecker [3 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 82.48ms Time] [2021-08-30 19:12:16,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2021-08-30 19:12:16,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 305. [2021-08-30 19:12:16,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 305 states, 301 states have (on average 1.4485049833887043) internal successors, (436), 301 states have internal predecessors, (436), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 19:12:16,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 439 transitions. [2021-08-30 19:12:16,328 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 439 transitions. Word has length 20 [2021-08-30 19:12:16,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 19:12:16,328 INFO L470 AbstractCegarLoop]: Abstraction has 305 states and 439 transitions. [2021-08-30 19:12:16,328 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 19:12:16,328 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 439 transitions. [2021-08-30 19:12:16,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-08-30 19:12:16,329 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 19:12:16,329 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 19:12:16,329 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-08-30 19:12:16,329 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr1ENSURES_VIOLATIONMEMORY_LEAK] === [2021-08-30 19:12:16,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 19:12:16,330 INFO L82 PathProgramCache]: Analyzing trace with hash 1552448560, now seen corresponding path program 1 times [2021-08-30 19:12:16,330 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 19:12:16,330 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258214474] [2021-08-30 19:12:16,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:12:16,330 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 19:12:16,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:12:16,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:12:16,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:12:16,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 19:12:16,360 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 19:12:16,360 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258214474] [2021-08-30 19:12:16,360 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258214474] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 19:12:16,361 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 19:12:16,361 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-30 19:12:16,361 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477828635] [2021-08-30 19:12:16,361 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-30 19:12:16,361 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 19:12:16,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-30 19:12:16,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-30 19:12:16,361 INFO L87 Difference]: Start difference. First operand 305 states and 439 transitions. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 19:12:16,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 19:12:16,435 INFO L93 Difference]: Finished difference Result 315 states and 440 transitions. [2021-08-30 19:12:16,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-30 19:12:16,435 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 21 [2021-08-30 19:12:16,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 19:12:16,436 INFO L225 Difference]: With dead ends: 315 [2021-08-30 19:12:16,436 INFO L226 Difference]: Without dead ends: 315 [2021-08-30 19:12:16,436 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 24.26ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-30 19:12:16,437 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 76 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 50.40ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.55ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 60.33ms IncrementalHoareTripleChecker+Time [2021-08-30 19:12:16,437 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [76 Valid, 7 Invalid, 95 Unknown, 0 Unchecked, 0.55ms Time], IncrementalHoareTripleChecker [2 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 60.33ms Time] [2021-08-30 19:12:16,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2021-08-30 19:12:16,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 313. [2021-08-30 19:12:16,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 313 states, 309 states have (on average 1.4110032362459546) internal successors, (436), 309 states have internal predecessors, (436), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 19:12:16,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 439 transitions. [2021-08-30 19:12:16,442 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 439 transitions. Word has length 21 [2021-08-30 19:12:16,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 19:12:16,442 INFO L470 AbstractCegarLoop]: Abstraction has 313 states and 439 transitions. [2021-08-30 19:12:16,442 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 19:12:16,443 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 439 transitions. [2021-08-30 19:12:16,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-08-30 19:12:16,444 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 19:12:16,444 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 19:12:16,444 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-08-30 19:12:16,445 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr1ENSURES_VIOLATIONMEMORY_LEAK] === [2021-08-30 19:12:16,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 19:12:16,445 INFO L82 PathProgramCache]: Analyzing trace with hash 1159421550, now seen corresponding path program 1 times [2021-08-30 19:12:16,445 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 19:12:16,445 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883028781] [2021-08-30 19:12:16,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:12:16,445 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 19:12:16,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:12:16,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:12:16,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:12:16,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 19:12:16,481 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 19:12:16,481 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883028781] [2021-08-30 19:12:16,481 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883028781] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 19:12:16,481 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 19:12:16,481 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-30 19:12:16,481 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315363743] [2021-08-30 19:12:16,481 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-30 19:12:16,481 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 19:12:16,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-30 19:12:16,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-30 19:12:16,482 INFO L87 Difference]: Start difference. First operand 313 states and 439 transitions. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 19:12:16,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 19:12:16,556 INFO L93 Difference]: Finished difference Result 523 states and 720 transitions. [2021-08-30 19:12:16,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-30 19:12:16,556 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 21 [2021-08-30 19:12:16,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 19:12:16,559 INFO L225 Difference]: With dead ends: 523 [2021-08-30 19:12:16,559 INFO L226 Difference]: Without dead ends: 523 [2021-08-30 19:12:16,559 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 25.13ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-30 19:12:16,559 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 72 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 45.05ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.44ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 54.54ms IncrementalHoareTripleChecker+Time [2021-08-30 19:12:16,560 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 7 Invalid, 83 Unknown, 0 Unchecked, 0.44ms Time], IncrementalHoareTripleChecker [2 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 54.54ms Time] [2021-08-30 19:12:16,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 523 states. [2021-08-30 19:12:16,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 523 to 457. [2021-08-30 19:12:16,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 457 states, 453 states have (on average 1.3686534216335542) internal successors, (620), 453 states have internal predecessors, (620), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 19:12:16,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 457 states to 457 states and 623 transitions. [2021-08-30 19:12:16,566 INFO L78 Accepts]: Start accepts. Automaton has 457 states and 623 transitions. Word has length 21 [2021-08-30 19:12:16,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 19:12:16,567 INFO L470 AbstractCegarLoop]: Abstraction has 457 states and 623 transitions. [2021-08-30 19:12:16,567 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 19:12:16,567 INFO L276 IsEmpty]: Start isEmpty. Operand 457 states and 623 transitions. [2021-08-30 19:12:16,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-08-30 19:12:16,567 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 19:12:16,567 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 19:12:16,567 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-08-30 19:12:16,568 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr1ENSURES_VIOLATIONMEMORY_LEAK] === [2021-08-30 19:12:16,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 19:12:16,568 INFO L82 PathProgramCache]: Analyzing trace with hash 1839479920, now seen corresponding path program 1 times [2021-08-30 19:12:16,568 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 19:12:16,568 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845316815] [2021-08-30 19:12:16,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:12:16,568 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 19:12:16,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:12:16,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:12:16,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:12:16,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 19:12:16,612 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 19:12:16,612 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845316815] [2021-08-30 19:12:16,612 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845316815] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 19:12:16,612 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 19:12:16,612 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-30 19:12:16,612 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474087838] [2021-08-30 19:12:16,613 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-30 19:12:16,613 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 19:12:16,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-30 19:12:16,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-30 19:12:16,613 INFO L87 Difference]: Start difference. First operand 457 states and 623 transitions. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 19:12:16,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 19:12:16,697 INFO L93 Difference]: Finished difference Result 587 states and 760 transitions. [2021-08-30 19:12:16,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-30 19:12:16,697 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 21 [2021-08-30 19:12:16,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 19:12:16,700 INFO L225 Difference]: With dead ends: 587 [2021-08-30 19:12:16,700 INFO L226 Difference]: Without dead ends: 587 [2021-08-30 19:12:16,701 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 20.85ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-30 19:12:16,701 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 64 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 59.80ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.45ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 68.26ms IncrementalHoareTripleChecker+Time [2021-08-30 19:12:16,701 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [64 Valid, 7 Invalid, 103 Unknown, 0 Unchecked, 0.45ms Time], IncrementalHoareTripleChecker [3 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 68.26ms Time] [2021-08-30 19:12:16,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 587 states. [2021-08-30 19:12:16,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 587 to 585. [2021-08-30 19:12:16,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 585 states, 581 states have (on average 1.3012048192771084) internal successors, (756), 581 states have internal predecessors, (756), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 19:12:16,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585 states to 585 states and 759 transitions. [2021-08-30 19:12:16,712 INFO L78 Accepts]: Start accepts. Automaton has 585 states and 759 transitions. Word has length 21 [2021-08-30 19:12:16,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 19:12:16,713 INFO L470 AbstractCegarLoop]: Abstraction has 585 states and 759 transitions. [2021-08-30 19:12:16,713 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 19:12:16,713 INFO L276 IsEmpty]: Start isEmpty. Operand 585 states and 759 transitions. [2021-08-30 19:12:16,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-08-30 19:12:16,713 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 19:12:16,714 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 19:12:16,714 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-08-30 19:12:16,714 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr1ENSURES_VIOLATIONMEMORY_LEAK] === [2021-08-30 19:12:16,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 19:12:16,714 INFO L82 PathProgramCache]: Analyzing trace with hash 1582545725, now seen corresponding path program 1 times [2021-08-30 19:12:16,714 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 19:12:16,714 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95248080] [2021-08-30 19:12:16,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:12:16,715 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 19:12:16,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:12:16,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:12:16,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:12:16,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 19:12:16,746 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 19:12:16,746 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95248080] [2021-08-30 19:12:16,746 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95248080] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 19:12:16,746 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 19:12:16,746 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-30 19:12:16,746 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197708946] [2021-08-30 19:12:16,746 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-30 19:12:16,746 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 19:12:16,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-30 19:12:16,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-30 19:12:16,747 INFO L87 Difference]: Start difference. First operand 585 states and 759 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 19:12:16,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 19:12:16,816 INFO L93 Difference]: Finished difference Result 603 states and 760 transitions. [2021-08-30 19:12:16,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-30 19:12:16,817 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 22 [2021-08-30 19:12:16,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 19:12:16,818 INFO L225 Difference]: With dead ends: 603 [2021-08-30 19:12:16,818 INFO L226 Difference]: Without dead ends: 603 [2021-08-30 19:12:16,819 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 21.68ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-30 19:12:16,819 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 75 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 45.57ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.45ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 54.08ms IncrementalHoareTripleChecker+Time [2021-08-30 19:12:16,819 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [75 Valid, 7 Invalid, 91 Unknown, 0 Unchecked, 0.45ms Time], IncrementalHoareTripleChecker [2 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 54.08ms Time] [2021-08-30 19:12:16,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 603 states. [2021-08-30 19:12:16,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 603 to 601. [2021-08-30 19:12:16,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 601 states, 597 states have (on average 1.2663316582914572) internal successors, (756), 597 states have internal predecessors, (756), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 19:12:16,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 601 states to 601 states and 759 transitions. [2021-08-30 19:12:16,826 INFO L78 Accepts]: Start accepts. Automaton has 601 states and 759 transitions. Word has length 22 [2021-08-30 19:12:16,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 19:12:16,827 INFO L470 AbstractCegarLoop]: Abstraction has 601 states and 759 transitions. [2021-08-30 19:12:16,827 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 19:12:16,827 INFO L276 IsEmpty]: Start isEmpty. Operand 601 states and 759 transitions. [2021-08-30 19:12:16,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-08-30 19:12:16,828 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 19:12:16,828 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 19:12:16,828 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-08-30 19:12:16,828 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr1ENSURES_VIOLATIONMEMORY_LEAK] === [2021-08-30 19:12:16,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 19:12:16,828 INFO L82 PathProgramCache]: Analyzing trace with hash 1189518715, now seen corresponding path program 1 times [2021-08-30 19:12:16,828 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 19:12:16,828 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823982816] [2021-08-30 19:12:16,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:12:16,828 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 19:12:16,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:12:16,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:12:16,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:12:16,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 19:12:16,855 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 19:12:16,855 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823982816] [2021-08-30 19:12:16,855 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823982816] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 19:12:16,855 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 19:12:16,855 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-30 19:12:16,855 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045080682] [2021-08-30 19:12:16,855 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-30 19:12:16,855 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 19:12:16,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-30 19:12:16,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-30 19:12:16,856 INFO L87 Difference]: Start difference. First operand 601 states and 759 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 19:12:16,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 19:12:16,917 INFO L93 Difference]: Finished difference Result 969 states and 1175 transitions. [2021-08-30 19:12:16,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-30 19:12:16,917 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 22 [2021-08-30 19:12:16,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 19:12:16,920 INFO L225 Difference]: With dead ends: 969 [2021-08-30 19:12:16,920 INFO L226 Difference]: Without dead ends: 969 [2021-08-30 19:12:16,920 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 21.30ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-30 19:12:16,920 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 64 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 38.10ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.40ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 45.22ms IncrementalHoareTripleChecker+Time [2021-08-30 19:12:16,920 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [64 Valid, 7 Invalid, 80 Unknown, 0 Unchecked, 0.40ms Time], IncrementalHoareTripleChecker [2 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 45.22ms Time] [2021-08-30 19:12:16,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 969 states. [2021-08-30 19:12:16,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 969 to 905. [2021-08-30 19:12:16,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 905 states, 901 states have (on average 1.2297447280799112) internal successors, (1108), 901 states have internal predecessors, (1108), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 19:12:16,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 905 states to 905 states and 1111 transitions. [2021-08-30 19:12:16,932 INFO L78 Accepts]: Start accepts. Automaton has 905 states and 1111 transitions. Word has length 22 [2021-08-30 19:12:16,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 19:12:16,932 INFO L470 AbstractCegarLoop]: Abstraction has 905 states and 1111 transitions. [2021-08-30 19:12:16,932 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 19:12:16,932 INFO L276 IsEmpty]: Start isEmpty. Operand 905 states and 1111 transitions. [2021-08-30 19:12:16,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-08-30 19:12:16,933 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 19:12:16,933 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 19:12:16,934 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-08-30 19:12:16,934 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr1ENSURES_VIOLATIONMEMORY_LEAK] === [2021-08-30 19:12:16,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 19:12:16,934 INFO L82 PathProgramCache]: Analyzing trace with hash 1869577085, now seen corresponding path program 1 times [2021-08-30 19:12:16,934 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 19:12:16,934 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734693742] [2021-08-30 19:12:16,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:12:16,934 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 19:12:16,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:12:16,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:12:16,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:12:16,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 19:12:16,972 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 19:12:16,972 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734693742] [2021-08-30 19:12:16,972 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734693742] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 19:12:16,972 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 19:12:16,972 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-30 19:12:16,972 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872438832] [2021-08-30 19:12:16,973 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-30 19:12:16,974 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 19:12:16,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-30 19:12:16,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-30 19:12:16,975 INFO L87 Difference]: Start difference. First operand 905 states and 1111 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 19:12:17,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 19:12:17,046 INFO L93 Difference]: Finished difference Result 1127 states and 1286 transitions. [2021-08-30 19:12:17,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-30 19:12:17,046 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 22 [2021-08-30 19:12:17,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 19:12:17,046 INFO L225 Difference]: With dead ends: 1127 [2021-08-30 19:12:17,046 INFO L226 Difference]: Without dead ends: 0 [2021-08-30 19:12:17,046 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 29.81ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-30 19:12:17,047 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 55 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 42.37ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.41ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 50.70ms IncrementalHoareTripleChecker+Time [2021-08-30 19:12:17,047 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 7 Invalid, 102 Unknown, 0 Unchecked, 0.41ms Time], IncrementalHoareTripleChecker [3 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 50.70ms Time] [2021-08-30 19:12:17,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-30 19:12:17,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-30 19:12:17,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2021-08-30 19:12:17,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-30 19:12:17,047 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 22 [2021-08-30 19:12:17,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 19:12:17,048 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-30 19:12:17,048 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 19:12:17,048 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-30 19:12:17,048 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-30 19:12:17,050 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr0ASSERT_VIOLATIONMEMORY_LEAK (1 of 2 remaining) [2021-08-30 19:12:17,050 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr1ENSURES_VIOLATIONMEMORY_LEAK (0 of 2 remaining) [2021-08-30 19:12:17,050 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-08-30 19:12:17,053 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-30 19:12:17,054 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 07:12:17 BoogieIcfgContainer [2021-08-30 19:12:17,054 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-30 19:12:17,055 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-30 19:12:17,055 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-30 19:12:17,055 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-30 19:12:17,055 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 07:12:14" (3/4) ... [2021-08-30 19:12:17,057 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-08-30 19:12:17,061 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure reach_error [2021-08-30 19:12:17,061 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2021-08-30 19:12:17,061 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2021-08-30 19:12:17,064 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2021-08-30 19:12:17,064 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-08-30 19:12:17,064 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-08-30 19:12:17,064 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-30 19:12:17,083 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-30 19:12:17,083 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-30 19:12:17,084 INFO L158 Benchmark]: Toolchain (without parser) took 3376.16ms. Allocated memory was 62.9MB in the beginning and 100.7MB in the end (delta: 37.7MB). Free memory was 43.9MB in the beginning and 63.8MB in the end (delta: -20.0MB). Peak memory consumption was 17.2MB. Max. memory is 16.1GB. [2021-08-30 19:12:17,084 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 62.9MB. Free memory was 45.3MB in the beginning and 45.2MB in the end (delta: 49.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-30 19:12:17,084 INFO L158 Benchmark]: CACSL2BoogieTranslator took 228.91ms. Allocated memory is still 62.9MB. Free memory was 43.6MB in the beginning and 46.0MB in the end (delta: -2.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-08-30 19:12:17,084 INFO L158 Benchmark]: Boogie Preprocessor took 50.23ms. Allocated memory is still 62.9MB. Free memory was 46.0MB in the beginning and 44.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-08-30 19:12:17,084 INFO L158 Benchmark]: RCFGBuilder took 166.23ms. Allocated memory is still 62.9MB. Free memory was 44.2MB in the beginning and 34.6MB in the end (delta: 9.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-08-30 19:12:17,085 INFO L158 Benchmark]: TraceAbstraction took 2897.12ms. Allocated memory was 62.9MB in the beginning and 100.7MB in the end (delta: 37.7MB). Free memory was 34.0MB in the beginning and 67.0MB in the end (delta: -33.0MB). Peak memory consumption was 3.7MB. Max. memory is 16.1GB. [2021-08-30 19:12:17,085 INFO L158 Benchmark]: Witness Printer took 28.66ms. Allocated memory is still 100.7MB. Free memory was 67.0MB in the beginning and 63.8MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-08-30 19:12:17,085 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 62.9MB. Free memory was 45.3MB in the beginning and 45.2MB in the end (delta: 49.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 228.91ms. Allocated memory is still 62.9MB. Free memory was 43.6MB in the beginning and 46.0MB in the end (delta: -2.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Preprocessor took 50.23ms. Allocated memory is still 62.9MB. Free memory was 46.0MB in the beginning and 44.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 166.23ms. Allocated memory is still 62.9MB. Free memory was 44.2MB in the beginning and 34.6MB in the end (delta: 9.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 2897.12ms. Allocated memory was 62.9MB in the beginning and 100.7MB in the end (delta: 37.7MB). Free memory was 34.0MB in the beginning and 67.0MB in the end (delta: -33.0MB). Peak memory consumption was 3.7MB. Max. memory is 16.1GB. * Witness Printer took 28.66ms. Allocated memory is still 100.7MB. Free memory was 67.0MB in the beginning and 63.8MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.00ms ErrorAutomatonConstructionTimeTotal, 0.00ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.00ms ErrorAutomatonConstructionTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 107]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 6]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 37 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 2858.40ms, OverallIterations: 17, TraceHistogramMax: 1, EmptinessCheckTime: 23.06ms, AutomataDifference: 1701.82ms, DeadEndRemovalTime: 0.00ms, HoareAnnotationTime: 0.00ms, InitialAbstractionConstructionTime: 8.59ms, PartialOrderReductionTime: 0.00ms, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1261 SdHoareTripleChecker+Valid, 1226.96ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1261 mSDsluCounter, 117 SdHoareTripleChecker+Invalid, 1020.30ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 99 mSDsCounter, 39 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1542 IncrementalHoareTripleChecker+Invalid, 1581 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 39 mSolverCounterUnsat, 52 mSDtfsCounter, 1542 mSolverCounterSat, 20.53ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 116 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 502.41ms Time, 0.00ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=905occurred in iteration=16, InterpolantAutomatonStates: 67, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.00ms DumpTime, AutomataMinimizationStatistics: 124.23ms AutomataMinimizationTime, 17 MinimizatonAttempts, 268 StatesRemovedByMinimization, 15 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 40.70ms SsaConstructionTime, 135.11ms SatisfiabilityAnalysisTime, 645.37ms InterpolantComputationTime, 324 NumberOfCodeBlocks, 324 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 307 ConstructedInterpolants, 0 QuantifiedInterpolants, 1045 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 17 InterpolantComputations, 17 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 - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-08-30 19:12:17,111 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...