./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/locks/test_locks_12.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_12.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 fbb7e06bf350f46f725ea0ddc5d1215829061b3a .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 19:11:37,812 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-30 19:11:37,815 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-30 19:11:37,862 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-30 19:11:37,862 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-30 19:11:37,867 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-30 19:11:37,868 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-30 19:11:37,874 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-30 19:11:37,876 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-30 19:11:37,881 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-30 19:11:37,882 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-30 19:11:37,886 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-30 19:11:37,887 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-30 19:11:37,889 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-30 19:11:37,891 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-30 19:11:37,894 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-30 19:11:37,895 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-30 19:11:37,896 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-30 19:11:37,899 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-30 19:11:37,906 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-30 19:11:37,908 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-30 19:11:37,909 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-30 19:11:37,911 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-30 19:11:37,912 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-30 19:11:37,915 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-30 19:11:37,915 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-30 19:11:37,916 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-30 19:11:37,918 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-30 19:11:37,918 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-30 19:11:37,919 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-30 19:11:37,919 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-30 19:11:37,920 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-30 19:11:37,922 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-30 19:11:37,923 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-30 19:11:37,924 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-30 19:11:37,924 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-30 19:11:37,925 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-30 19:11:37,925 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-30 19:11:37,925 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-30 19:11:37,927 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-30 19:11:37,928 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-30 19:11:37,932 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-08-30 19:11:37,971 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-30 19:11:37,972 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-30 19:11:37,973 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-30 19:11:37,973 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-30 19:11:37,975 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-30 19:11:37,975 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-30 19:11:37,975 INFO L138 SettingsManager]: * Use SBE=true [2021-08-30 19:11:37,976 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-30 19:11:37,976 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-30 19:11:37,976 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-30 19:11:37,977 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-30 19:11:37,977 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-30 19:11:37,977 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-30 19:11:37,978 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-08-30 19:11:37,978 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-08-30 19:11:37,978 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-08-30 19:11:37,978 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-30 19:11:37,978 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-08-30 19:11:37,979 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-30 19:11:37,979 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-30 19:11:37,979 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-30 19:11:37,979 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-30 19:11:37,979 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-30 19:11:37,980 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-30 19:11:37,980 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-30 19:11:37,980 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-30 19:11:37,980 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-30 19:11:37,980 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-30 19:11:37,980 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-30 19:11:37,981 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fbb7e06bf350f46f725ea0ddc5d1215829061b3a [2021-08-30 19:11:38,312 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-30 19:11:38,333 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-30 19:11:38,335 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-30 19:11:38,336 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-30 19:11:38,337 INFO L275 PluginConnector]: CDTParser initialized [2021-08-30 19:11:38,339 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/locks/test_locks_12.c [2021-08-30 19:11:38,408 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4157ecda9/23809cad39d14c89b6cebba1eaa81d63/FLAGd84cabd2b [2021-08-30 19:11:38,886 INFO L306 CDTParser]: Found 1 translation units. [2021-08-30 19:11:38,887 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/locks/test_locks_12.c [2021-08-30 19:11:38,896 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4157ecda9/23809cad39d14c89b6cebba1eaa81d63/FLAGd84cabd2b [2021-08-30 19:11:39,281 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4157ecda9/23809cad39d14c89b6cebba1eaa81d63 [2021-08-30 19:11:39,283 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-30 19:11:39,284 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-30 19:11:39,286 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-30 19:11:39,286 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-30 19:11:39,289 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-30 19:11:39,290 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 07:11:39" (1/1) ... [2021-08-30 19:11:39,291 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28fbef4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:11:39, skipping insertion in model container [2021-08-30 19:11:39,291 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 07:11:39" (1/1) ... [2021-08-30 19:11:39,310 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-30 19:11:39,331 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-30 19:11:39,463 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_12.c[4591,4604] [2021-08-30 19:11:39,466 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-30 19:11:39,474 INFO L203 MainTranslator]: Completed pre-run [2021-08-30 19:11:39,499 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_12.c[4591,4604] [2021-08-30 19:11:39,500 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-30 19:11:39,511 INFO L208 MainTranslator]: Completed translation [2021-08-30 19:11:39,512 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:11:39 WrapperNode [2021-08-30 19:11:39,512 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-30 19:11:39,515 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-30 19:11:39,515 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-30 19:11:39,516 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-30 19:11:39,525 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:11:39" (1/1) ... [2021-08-30 19:11:39,531 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:11:39" (1/1) ... [2021-08-30 19:11:39,547 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:11:39" (1/1) ... [2021-08-30 19:11:39,548 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:11:39" (1/1) ... [2021-08-30 19:11:39,557 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:11:39" (1/1) ... [2021-08-30 19:11:39,575 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:11:39" (1/1) ... [2021-08-30 19:11:39,577 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:11:39" (1/1) ... [2021-08-30 19:11:39,583 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-30 19:11:39,587 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-30 19:11:39,587 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-30 19:11:39,587 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-30 19:11:39,588 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:11:39" (1/1) ... [2021-08-30 19:11:39,594 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-30 19:11:39,602 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-30 19:11:39,615 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 19:11:39,628 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 19:11:39,659 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-08-30 19:11:39,659 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-30 19:11:39,659 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-08-30 19:11:39,660 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-08-30 19:11:39,660 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-08-30 19:11:39,661 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-08-30 19:11:39,661 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-08-30 19:11:39,661 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-30 19:11:39,661 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-08-30 19:11:39,662 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-08-30 19:11:39,662 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-08-30 19:11:39,662 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-30 19:11:39,662 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-30 19:11:39,662 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-30 19:11:39,662 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-08-30 19:11:39,663 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-30 19:11:39,868 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-30 19:11:39,869 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-08-30 19:11:39,871 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 07:11:39 BoogieIcfgContainer [2021-08-30 19:11:39,871 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-30 19:11:39,882 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-30 19:11:39,882 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-30 19:11:39,884 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-30 19:11:39,885 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 07:11:39" (1/3) ... [2021-08-30 19:11:39,885 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@285f4723 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 07:11:39, skipping insertion in model container [2021-08-30 19:11:39,886 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:11:39" (2/3) ... [2021-08-30 19:11:39,886 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@285f4723 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 07:11:39, skipping insertion in model container [2021-08-30 19:11:39,886 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 07:11:39" (3/3) ... [2021-08-30 19:11:39,887 INFO L111 eAbstractionObserver]: Analyzing ICFG test_locks_12.c [2021-08-30 19:11:39,893 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-30 19:11:39,893 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-08-30 19:11:39,938 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-30 19:11:39,947 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 19:11:39,947 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-08-30 19:11:39,966 INFO L276 IsEmpty]: Start isEmpty. Operand has 52 states, 45 states have (on average 1.9111111111111112) internal successors, (86), 47 states have internal predecessors, (86), 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 19:11:39,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-08-30 19:11:39,976 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 19:11:39,977 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 19:11:39,978 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr1ENSURES_VIOLATIONMEMORY_LEAK === [mainErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr1ENSURES_VIOLATIONMEMORY_LEAK] === [2021-08-30 19:11:39,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 19:11:39,984 INFO L82 PathProgramCache]: Analyzing trace with hash -2024597557, now seen corresponding path program 1 times [2021-08-30 19:11:39,992 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 19:11:39,992 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989638506] [2021-08-30 19:11:39,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:11:39,993 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 19:11:40,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:11:40,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:11:40,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:11:40,279 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 19:11:40,280 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 19:11:40,280 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989638506] [2021-08-30 19:11:40,280 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989638506] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 19:11:40,281 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 19:11:40,281 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-30 19:11:40,282 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434583907] [2021-08-30 19:11:40,286 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-30 19:11:40,286 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 19:11:40,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-30 19:11:40,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-30 19:11:40,316 INFO L87 Difference]: Start difference. First operand has 52 states, 45 states have (on average 1.9111111111111112) internal successors, (86), 47 states have internal predecessors, (86), 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 19:11:40,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 19:11:40,515 INFO L93 Difference]: Finished difference Result 51 states and 86 transitions. [2021-08-30 19:11:40,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-30 19:11:40,518 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 19:11:40,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 19:11:40,524 INFO L225 Difference]: With dead ends: 51 [2021-08-30 19:11:40,525 INFO L226 Difference]: Without dead ends: 46 [2021-08-30 19:11:40,526 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 54.09ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-30 19:11:40,529 INFO L928 BasicCegarLoop]: 4 mSDtfsCounter, 79 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 130.89ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.06ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 166.37ms IncrementalHoareTripleChecker+Time [2021-08-30 19:11:40,530 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [79 Valid, 5 Invalid, 87 Unknown, 0 Unchecked, 3.06ms Time], IncrementalHoareTripleChecker [1 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 166.37ms Time] [2021-08-30 19:11:40,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2021-08-30 19:11:40,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2021-08-30 19:11:40,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 42 states have (on average 1.8571428571428572) internal successors, (78), 42 states have internal predecessors, (78), 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 19:11:40,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 81 transitions. [2021-08-30 19:11:40,560 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 81 transitions. Word has length 9 [2021-08-30 19:11:40,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 19:11:40,561 INFO L470 AbstractCegarLoop]: Abstraction has 46 states and 81 transitions. [2021-08-30 19:11:40,561 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 19:11:40,561 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 81 transitions. [2021-08-30 19:11:40,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-08-30 19:11:40,562 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 19:11:40,562 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, 1] [2021-08-30 19:11:40,562 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-30 19:11:40,562 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr1ENSURES_VIOLATIONMEMORY_LEAK] === [2021-08-30 19:11:40,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 19:11:40,563 INFO L82 PathProgramCache]: Analyzing trace with hash 80003194, now seen corresponding path program 1 times [2021-08-30 19:11:40,563 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 19:11:40,563 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523944519] [2021-08-30 19:11:40,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:11:40,564 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 19:11:40,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:11:40,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:11:40,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:11:40,680 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 19:11:40,681 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 19:11:40,681 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523944519] [2021-08-30 19:11:40,681 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523944519] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 19:11:40,681 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 19:11:40,682 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-30 19:11:40,682 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109716210] [2021-08-30 19:11:40,683 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-30 19:11:40,683 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 19:11:40,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-30 19:11:40,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-30 19:11:40,684 INFO L87 Difference]: Start difference. First operand 46 states and 81 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 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 19:11:41,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 19:11:41,020 INFO L93 Difference]: Finished difference Result 85 states and 153 transitions. [2021-08-30 19:11:41,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-30 19:11:41,021 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 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 23 [2021-08-30 19:11:41,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 19:11:41,022 INFO L225 Difference]: With dead ends: 85 [2021-08-30 19:11:41,022 INFO L226 Difference]: Without dead ends: 85 [2021-08-30 19:11:41,023 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 50.10ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-30 19:11:41,024 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 202 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 223.33ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.50ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 285.13ms IncrementalHoareTripleChecker+Time [2021-08-30 19:11:41,025 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [202 Valid, 7 Invalid, 163 Unknown, 0 Unchecked, 4.50ms Time], IncrementalHoareTripleChecker [2 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 285.13ms Time] [2021-08-30 19:11:41,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2021-08-30 19:11:41,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 59. [2021-08-30 19:11:41,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 55 states have (on average 1.8727272727272728) internal successors, (103), 55 states have internal predecessors, (103), 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 19:11:41,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 106 transitions. [2021-08-30 19:11:41,034 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 106 transitions. Word has length 23 [2021-08-30 19:11:41,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 19:11:41,034 INFO L470 AbstractCegarLoop]: Abstraction has 59 states and 106 transitions. [2021-08-30 19:11:41,034 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 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 19:11:41,035 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 106 transitions. [2021-08-30 19:11:41,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-08-30 19:11:41,035 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 19:11:41,036 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, 1] [2021-08-30 19:11:41,036 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-30 19:11:41,036 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr1ENSURES_VIOLATIONMEMORY_LEAK] === [2021-08-30 19:11:41,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 19:11:41,037 INFO L82 PathProgramCache]: Analyzing trace with hash -1199860484, now seen corresponding path program 1 times [2021-08-30 19:11:41,037 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 19:11:41,037 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656430478] [2021-08-30 19:11:41,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:11:41,038 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 19:11:41,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:11:41,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:11:41,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:11:41,154 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 19:11:41,154 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 19:11:41,154 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656430478] [2021-08-30 19:11:41,154 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656430478] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 19:11:41,155 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 19:11:41,155 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-30 19:11:41,155 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092503341] [2021-08-30 19:11:41,155 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-30 19:11:41,155 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 19:11:41,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-30 19:11:41,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-30 19:11:41,156 INFO L87 Difference]: Start difference. First operand 59 states and 106 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 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 19:11:41,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 19:11:41,410 INFO L93 Difference]: Finished difference Result 85 states and 151 transitions. [2021-08-30 19:11:41,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-30 19:11:41,410 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 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 23 [2021-08-30 19:11:41,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 19:11:41,412 INFO L225 Difference]: With dead ends: 85 [2021-08-30 19:11:41,412 INFO L226 Difference]: Without dead ends: 85 [2021-08-30 19:11:41,413 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 47.24ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-30 19:11:41,414 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 178 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 165.83ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.87ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 202.07ms IncrementalHoareTripleChecker+Time [2021-08-30 19:11:41,414 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [178 Valid, 7 Invalid, 183 Unknown, 0 Unchecked, 7.87ms Time], IncrementalHoareTripleChecker [3 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 202.07ms Time] [2021-08-30 19:11:41,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2021-08-30 19:11:41,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 83. [2021-08-30 19:11:41,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 79 states have (on average 1.860759493670886) internal successors, (147), 79 states have internal predecessors, (147), 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 19:11:41,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 150 transitions. [2021-08-30 19:11:41,424 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 150 transitions. Word has length 23 [2021-08-30 19:11:41,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 19:11:41,425 INFO L470 AbstractCegarLoop]: Abstraction has 83 states and 150 transitions. [2021-08-30 19:11:41,425 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 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 19:11:41,425 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 150 transitions. [2021-08-30 19:11:41,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-08-30 19:11:41,426 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 19:11:41,426 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, 1, 1] [2021-08-30 19:11:41,426 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-30 19:11:41,426 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr1ENSURES_VIOLATIONMEMORY_LEAK] === [2021-08-30 19:11:41,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 19:11:41,427 INFO L82 PathProgramCache]: Analyzing trace with hash -1814655547, now seen corresponding path program 1 times [2021-08-30 19:11:41,427 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 19:11:41,428 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790574043] [2021-08-30 19:11:41,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:11:41,428 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 19:11:41,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:11:41,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:11:41,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:11:41,515 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 19:11:41,516 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 19:11:41,516 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790574043] [2021-08-30 19:11:41,516 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790574043] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 19:11:41,516 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 19:11:41,516 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-30 19:11:41,517 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114392421] [2021-08-30 19:11:41,517 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-30 19:11:41,517 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 19:11:41,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-30 19:11:41,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-30 19:11:41,518 INFO L87 Difference]: Start difference. First operand 83 states and 150 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 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 19:11:41,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 19:11:41,739 INFO L93 Difference]: Finished difference Result 88 states and 153 transitions. [2021-08-30 19:11:41,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-30 19:11:41,739 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 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 24 [2021-08-30 19:11:41,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 19:11:41,743 INFO L225 Difference]: With dead ends: 88 [2021-08-30 19:11:41,744 INFO L226 Difference]: Without dead ends: 88 [2021-08-30 19:11:41,744 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 38.18ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-30 19:11:41,754 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 157 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 157.20ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.76ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 186.25ms IncrementalHoareTripleChecker+Time [2021-08-30 19:11:41,754 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [157 Valid, 7 Invalid, 203 Unknown, 0 Unchecked, 3.76ms Time], IncrementalHoareTripleChecker [2 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 186.25ms Time] [2021-08-30 19:11:41,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2021-08-30 19:11:41,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 86. [2021-08-30 19:11:41,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 82 states have (on average 1.8170731707317074) internal successors, (149), 82 states have internal predecessors, (149), 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 19:11:41,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 152 transitions. [2021-08-30 19:11:41,762 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 152 transitions. Word has length 24 [2021-08-30 19:11:41,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 19:11:41,767 INFO L470 AbstractCegarLoop]: Abstraction has 86 states and 152 transitions. [2021-08-30 19:11:41,768 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 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 19:11:41,768 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 152 transitions. [2021-08-30 19:11:41,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-08-30 19:11:41,770 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 19:11:41,770 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, 1, 1] [2021-08-30 19:11:41,770 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-30 19:11:41,771 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr1ENSURES_VIOLATIONMEMORY_LEAK] === [2021-08-30 19:11:41,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 19:11:41,774 INFO L82 PathProgramCache]: Analyzing trace with hash 1459243395, now seen corresponding path program 1 times [2021-08-30 19:11:41,774 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 19:11:41,775 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032644244] [2021-08-30 19:11:41,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:11:41,775 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 19:11:41,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:11:41,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:11:41,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:11:41,871 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 19:11:41,872 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 19:11:41,872 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032644244] [2021-08-30 19:11:41,872 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032644244] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 19:11:41,872 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 19:11:41,872 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-30 19:11:41,872 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971689416] [2021-08-30 19:11:41,873 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-30 19:11:41,873 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 19:11:41,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-30 19:11:41,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-30 19:11:41,874 INFO L87 Difference]: Start difference. First operand 86 states and 152 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 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 19:11:42,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 19:11:42,088 INFO L93 Difference]: Finished difference Result 161 states and 286 transitions. [2021-08-30 19:11:42,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-30 19:11:42,089 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 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 24 [2021-08-30 19:11:42,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 19:11:42,090 INFO L225 Difference]: With dead ends: 161 [2021-08-30 19:11:42,090 INFO L226 Difference]: Without dead ends: 161 [2021-08-30 19:11:42,090 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 43.19ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-30 19:11:42,091 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 197 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 148.43ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.46ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 178.23ms IncrementalHoareTripleChecker+Time [2021-08-30 19:11:42,092 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [197 Valid, 7 Invalid, 163 Unknown, 0 Unchecked, 1.46ms Time], IncrementalHoareTripleChecker [3 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 178.23ms Time] [2021-08-30 19:11:42,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2021-08-30 19:11:42,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 159. [2021-08-30 19:11:42,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 155 states have (on average 1.8193548387096774) internal successors, (282), 155 states have internal predecessors, (282), 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 19:11:42,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 285 transitions. [2021-08-30 19:11:42,103 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 285 transitions. Word has length 24 [2021-08-30 19:11:42,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 19:11:42,103 INFO L470 AbstractCegarLoop]: Abstraction has 159 states and 285 transitions. [2021-08-30 19:11:42,104 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 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 19:11:42,104 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 285 transitions. [2021-08-30 19:11:42,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-08-30 19:11:42,105 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 19:11:42,105 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, 1, 1] [2021-08-30 19:11:42,105 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-30 19:11:42,105 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr1ENSURES_VIOLATIONMEMORY_LEAK] === [2021-08-30 19:11:42,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 19:11:42,106 INFO L82 PathProgramCache]: Analyzing trace with hash -1555860223, now seen corresponding path program 1 times [2021-08-30 19:11:42,106 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 19:11:42,106 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812832466] [2021-08-30 19:11:42,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:11:42,106 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 19:11:42,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:11:42,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:11:42,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:11:42,184 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 19:11:42,185 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 19:11:42,185 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812832466] [2021-08-30 19:11:42,185 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812832466] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 19:11:42,185 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 19:11:42,185 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-30 19:11:42,186 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358226422] [2021-08-30 19:11:42,186 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-30 19:11:42,186 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 19:11:42,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-30 19:11:42,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-30 19:11:42,199 INFO L87 Difference]: Start difference. First operand 159 states and 285 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 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 19:11:42,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 19:11:42,422 INFO L93 Difference]: Finished difference Result 205 states and 368 transitions. [2021-08-30 19:11:42,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-30 19:11:42,423 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 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 24 [2021-08-30 19:11:42,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 19:11:42,426 INFO L225 Difference]: With dead ends: 205 [2021-08-30 19:11:42,426 INFO L226 Difference]: Without dead ends: 205 [2021-08-30 19:11:42,426 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 35.40ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-30 19:11:42,431 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 128 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 161.80ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.74ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 196.47ms IncrementalHoareTripleChecker+Time [2021-08-30 19:11:42,432 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [128 Valid, 7 Invalid, 222 Unknown, 0 Unchecked, 1.74ms Time], IncrementalHoareTripleChecker [2 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 196.47ms Time] [2021-08-30 19:11:42,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2021-08-30 19:11:42,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 159. [2021-08-30 19:11:42,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 155 states have (on average 1.8064516129032258) internal successors, (280), 155 states have internal predecessors, (280), 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 19:11:42,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 283 transitions. [2021-08-30 19:11:42,449 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 283 transitions. Word has length 24 [2021-08-30 19:11:42,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 19:11:42,450 INFO L470 AbstractCegarLoop]: Abstraction has 159 states and 283 transitions. [2021-08-30 19:11:42,450 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 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 19:11:42,450 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 283 transitions. [2021-08-30 19:11:42,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-30 19:11:42,451 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 19:11:42,451 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, 1, 1, 1] [2021-08-30 19:11:42,451 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-08-30 19:11:42,451 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr1ENSURES_VIOLATIONMEMORY_LEAK] === [2021-08-30 19:11:42,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 19:11:42,452 INFO L82 PathProgramCache]: Analyzing trace with hash -2007881935, now seen corresponding path program 1 times [2021-08-30 19:11:42,452 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 19:11:42,452 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256466417] [2021-08-30 19:11:42,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:11:42,452 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 19:11:42,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:11:42,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:11:42,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:11:42,521 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 19:11:42,522 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 19:11:42,522 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256466417] [2021-08-30 19:11:42,522 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256466417] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 19:11:42,522 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 19:11:42,522 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-30 19:11:42,523 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748253036] [2021-08-30 19:11:42,523 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-30 19:11:42,523 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 19:11:42,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-30 19:11:42,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-30 19:11:42,524 INFO L87 Difference]: Start difference. First operand 159 states and 283 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 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 19:11:42,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 19:11:42,726 INFO L93 Difference]: Finished difference Result 297 states and 534 transitions. [2021-08-30 19:11:42,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-30 19:11:42,727 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 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 25 [2021-08-30 19:11:42,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 19:11:42,730 INFO L225 Difference]: With dead ends: 297 [2021-08-30 19:11:42,730 INFO L226 Difference]: Without dead ends: 297 [2021-08-30 19:11:42,730 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 38.14ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-30 19:11:42,730 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 188 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 140.63ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.14ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 169.31ms IncrementalHoareTripleChecker+Time [2021-08-30 19:11:42,731 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [188 Valid, 7 Invalid, 159 Unknown, 0 Unchecked, 2.14ms Time], IncrementalHoareTripleChecker [2 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 169.31ms Time] [2021-08-30 19:11:42,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2021-08-30 19:11:42,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 215. [2021-08-30 19:11:42,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 211 states have (on average 1.7914691943127963) internal successors, (378), 211 states have internal predecessors, (378), 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 19:11:42,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 381 transitions. [2021-08-30 19:11:42,739 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 381 transitions. Word has length 25 [2021-08-30 19:11:42,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 19:11:42,740 INFO L470 AbstractCegarLoop]: Abstraction has 215 states and 381 transitions. [2021-08-30 19:11:42,740 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 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 19:11:42,740 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 381 transitions. [2021-08-30 19:11:42,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-30 19:11:42,741 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 19:11:42,741 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, 1, 1, 1] [2021-08-30 19:11:42,741 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-08-30 19:11:42,742 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr1ENSURES_VIOLATIONMEMORY_LEAK] === [2021-08-30 19:11:42,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 19:11:42,742 INFO L82 PathProgramCache]: Analyzing trace with hash 1007221683, now seen corresponding path program 1 times [2021-08-30 19:11:42,742 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 19:11:42,742 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584400915] [2021-08-30 19:11:42,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:11:42,743 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 19:11:42,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:11:42,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:11:42,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:11:42,804 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 19:11:42,805 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 19:11:42,805 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584400915] [2021-08-30 19:11:42,805 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584400915] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 19:11:42,805 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 19:11:42,805 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-30 19:11:42,805 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736836114] [2021-08-30 19:11:42,806 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-30 19:11:42,806 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 19:11:42,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-30 19:11:42,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-30 19:11:42,807 INFO L87 Difference]: Start difference. First operand 215 states and 381 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 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 19:11:42,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 19:11:42,994 INFO L93 Difference]: Finished difference Result 305 states and 536 transitions. [2021-08-30 19:11:42,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-30 19:11:42,995 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 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 25 [2021-08-30 19:11:42,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 19:11:42,996 INFO L225 Difference]: With dead ends: 305 [2021-08-30 19:11:42,996 INFO L226 Difference]: Without dead ends: 305 [2021-08-30 19:11:42,997 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 41.23ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-30 19:11:42,997 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 166 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 132.55ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.55ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 162.69ms IncrementalHoareTripleChecker+Time [2021-08-30 19:11:42,998 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [166 Valid, 7 Invalid, 185 Unknown, 0 Unchecked, 1.55ms Time], IncrementalHoareTripleChecker [3 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 162.69ms Time] [2021-08-30 19:11:42,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2021-08-30 19:11:43,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 303. [2021-08-30 19:11:43,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 299 states have (on average 1.7792642140468227) internal successors, (532), 299 states have internal predecessors, (532), 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 19:11:43,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 535 transitions. [2021-08-30 19:11:43,008 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 535 transitions. Word has length 25 [2021-08-30 19:11:43,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 19:11:43,008 INFO L470 AbstractCegarLoop]: Abstraction has 303 states and 535 transitions. [2021-08-30 19:11:43,008 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 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 19:11:43,009 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 535 transitions. [2021-08-30 19:11:43,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-08-30 19:11:43,010 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 19:11:43,010 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, 1, 1, 1, 1] [2021-08-30 19:11:43,010 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-08-30 19:11:43,011 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr1ENSURES_VIOLATIONMEMORY_LEAK] === [2021-08-30 19:11:43,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 19:11:43,011 INFO L82 PathProgramCache]: Analyzing trace with hash -2114584424, now seen corresponding path program 1 times [2021-08-30 19:11:43,012 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 19:11:43,012 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957615970] [2021-08-30 19:11:43,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:11:43,012 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 19:11:43,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:11:43,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:11:43,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:11:43,059 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 19:11:43,060 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 19:11:43,060 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957615970] [2021-08-30 19:11:43,060 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957615970] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 19:11:43,060 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 19:11:43,060 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-30 19:11:43,061 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550884366] [2021-08-30 19:11:43,061 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-30 19:11:43,061 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 19:11:43,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-30 19:11:43,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-30 19:11:43,062 INFO L87 Difference]: Start difference. First operand 303 states and 535 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 19:11:43,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 19:11:43,255 INFO L93 Difference]: Finished difference Result 311 states and 540 transitions. [2021-08-30 19:11:43,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-30 19:11:43,255 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 26 [2021-08-30 19:11:43,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 19:11:43,257 INFO L225 Difference]: With dead ends: 311 [2021-08-30 19:11:43,257 INFO L226 Difference]: Without dead ends: 311 [2021-08-30 19:11:43,258 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 32.36ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-30 19:11:43,258 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 155 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 137.59ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.65ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 166.41ms IncrementalHoareTripleChecker+Time [2021-08-30 19:11:43,259 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [155 Valid, 7 Invalid, 195 Unknown, 0 Unchecked, 1.65ms Time], IncrementalHoareTripleChecker [2 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 166.41ms Time] [2021-08-30 19:11:43,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2021-08-30 19:11:43,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 309. [2021-08-30 19:11:43,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 305 states have (on average 1.7573770491803278) internal successors, (536), 305 states have internal predecessors, (536), 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 19:11:43,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 539 transitions. [2021-08-30 19:11:43,266 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 539 transitions. Word has length 26 [2021-08-30 19:11:43,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 19:11:43,267 INFO L470 AbstractCegarLoop]: Abstraction has 309 states and 539 transitions. [2021-08-30 19:11:43,267 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 19:11:43,267 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 539 transitions. [2021-08-30 19:11:43,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-08-30 19:11:43,272 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 19:11:43,273 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, 1, 1, 1, 1] [2021-08-30 19:11:43,273 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-08-30 19:11:43,273 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr1ENSURES_VIOLATIONMEMORY_LEAK] === [2021-08-30 19:11:43,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 19:11:43,274 INFO L82 PathProgramCache]: Analyzing trace with hash 1159314518, now seen corresponding path program 1 times [2021-08-30 19:11:43,274 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 19:11:43,274 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971606793] [2021-08-30 19:11:43,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:11:43,274 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 19:11:43,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:11:43,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:11:43,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:11:43,320 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 19:11:43,320 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 19:11:43,320 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971606793] [2021-08-30 19:11:43,320 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971606793] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 19:11:43,321 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 19:11:43,321 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-30 19:11:43,321 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792397726] [2021-08-30 19:11:43,321 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-30 19:11:43,321 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 19:11:43,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-30 19:11:43,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-30 19:11:43,322 INFO L87 Difference]: Start difference. First operand 309 states and 539 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 19:11:43,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 19:11:43,519 INFO L93 Difference]: Finished difference Result 571 states and 1004 transitions. [2021-08-30 19:11:43,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-30 19:11:43,520 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 26 [2021-08-30 19:11:43,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 19:11:43,522 INFO L225 Difference]: With dead ends: 571 [2021-08-30 19:11:43,522 INFO L226 Difference]: Without dead ends: 571 [2021-08-30 19:11:43,522 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 28.98ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-30 19:11:43,523 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 181 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 134.89ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.40ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 171.23ms IncrementalHoareTripleChecker+Time [2021-08-30 19:11:43,523 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [181 Valid, 7 Invalid, 157 Unknown, 0 Unchecked, 1.40ms Time], IncrementalHoareTripleChecker [2 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 171.23ms Time] [2021-08-30 19:11:43,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2021-08-30 19:11:43,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 425. [2021-08-30 19:11:43,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 425 states, 421 states have (on average 1.7292161520190024) internal successors, (728), 421 states have internal predecessors, (728), 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 19:11:43,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 731 transitions. [2021-08-30 19:11:43,536 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 731 transitions. Word has length 26 [2021-08-30 19:11:43,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 19:11:43,536 INFO L470 AbstractCegarLoop]: Abstraction has 425 states and 731 transitions. [2021-08-30 19:11:43,536 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 19:11:43,536 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 731 transitions. [2021-08-30 19:11:43,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-08-30 19:11:43,538 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 19:11:43,538 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, 1, 1, 1, 1] [2021-08-30 19:11:43,538 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-08-30 19:11:43,538 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr1ENSURES_VIOLATIONMEMORY_LEAK] === [2021-08-30 19:11:43,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 19:11:43,539 INFO L82 PathProgramCache]: Analyzing trace with hash -120549160, now seen corresponding path program 1 times [2021-08-30 19:11:43,539 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 19:11:43,539 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935308429] [2021-08-30 19:11:43,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:11:43,539 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 19:11:43,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:11:43,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:11:43,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:11:43,590 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 19:11:43,590 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 19:11:43,590 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935308429] [2021-08-30 19:11:43,590 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935308429] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 19:11:43,590 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 19:11:43,590 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-30 19:11:43,590 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983517457] [2021-08-30 19:11:43,591 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-30 19:11:43,591 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 19:11:43,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-30 19:11:43,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-30 19:11:43,592 INFO L87 Difference]: Start difference. First operand 425 states and 731 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 19:11:43,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 19:11:43,786 INFO L93 Difference]: Finished difference Result 595 states and 1016 transitions. [2021-08-30 19:11:43,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-30 19:11:43,790 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 26 [2021-08-30 19:11:43,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 19:11:43,793 INFO L225 Difference]: With dead ends: 595 [2021-08-30 19:11:43,793 INFO L226 Difference]: Without dead ends: 595 [2021-08-30 19:11:43,793 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 30.93ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-30 19:11:43,795 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 160 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 137.72ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.25ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 163.73ms IncrementalHoareTripleChecker+Time [2021-08-30 19:11:43,795 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [160 Valid, 7 Invalid, 186 Unknown, 0 Unchecked, 2.25ms Time], IncrementalHoareTripleChecker [3 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 163.73ms Time] [2021-08-30 19:11:43,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 595 states. [2021-08-30 19:11:43,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 595 to 593. [2021-08-30 19:11:43,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 593 states, 589 states have (on average 1.7181663837011885) internal successors, (1012), 589 states have internal predecessors, (1012), 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 19:11:43,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 593 states to 593 states and 1015 transitions. [2021-08-30 19:11:43,817 INFO L78 Accepts]: Start accepts. Automaton has 593 states and 1015 transitions. Word has length 26 [2021-08-30 19:11:43,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 19:11:43,817 INFO L470 AbstractCegarLoop]: Abstraction has 593 states and 1015 transitions. [2021-08-30 19:11:43,818 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 19:11:43,818 INFO L276 IsEmpty]: Start isEmpty. Operand 593 states and 1015 transitions. [2021-08-30 19:11:43,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-08-30 19:11:43,820 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 19:11:43,820 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, 1, 1, 1, 1, 1] [2021-08-30 19:11:43,821 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-08-30 19:11:43,821 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr1ENSURES_VIOLATIONMEMORY_LEAK] === [2021-08-30 19:11:43,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 19:11:43,821 INFO L82 PathProgramCache]: Analyzing trace with hash 1579225448, now seen corresponding path program 1 times [2021-08-30 19:11:43,822 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 19:11:43,822 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761325526] [2021-08-30 19:11:43,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:11:43,822 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 19:11:43,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:11:43,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:11:43,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:11:43,892 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 19:11:43,892 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 19:11:43,892 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761325526] [2021-08-30 19:11:43,892 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761325526] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 19:11:43,892 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 19:11:43,892 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-30 19:11:43,893 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149501750] [2021-08-30 19:11:43,894 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-30 19:11:43,894 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 19:11:43,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-30 19:11:43,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-30 19:11:43,895 INFO L87 Difference]: Start difference. First operand 593 states and 1015 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 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 19:11:44,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 19:11:44,092 INFO L93 Difference]: Finished difference Result 603 states and 1016 transitions. [2021-08-30 19:11:44,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-30 19:11:44,092 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 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 27 [2021-08-30 19:11:44,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 19:11:44,095 INFO L225 Difference]: With dead ends: 603 [2021-08-30 19:11:44,095 INFO L226 Difference]: Without dead ends: 603 [2021-08-30 19:11:44,096 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 46.20ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-30 19:11:44,096 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 154 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 137.48ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.95ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 165.76ms IncrementalHoareTripleChecker+Time [2021-08-30 19:11:44,096 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [154 Valid, 7 Invalid, 191 Unknown, 0 Unchecked, 2.95ms Time], IncrementalHoareTripleChecker [2 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 165.76ms Time] [2021-08-30 19:11:44,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 603 states. [2021-08-30 19:11:44,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 603 to 601. [2021-08-30 19:11:44,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 601 states, 597 states have (on average 1.695142378559464) internal successors, (1012), 597 states have internal predecessors, (1012), 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 19:11:44,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 601 states to 601 states and 1015 transitions. [2021-08-30 19:11:44,110 INFO L78 Accepts]: Start accepts. Automaton has 601 states and 1015 transitions. Word has length 27 [2021-08-30 19:11:44,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 19:11:44,110 INFO L470 AbstractCegarLoop]: Abstraction has 601 states and 1015 transitions. [2021-08-30 19:11:44,111 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 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 19:11:44,111 INFO L276 IsEmpty]: Start isEmpty. Operand 601 states and 1015 transitions. [2021-08-30 19:11:44,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-08-30 19:11:44,111 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 19:11:44,112 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, 1, 1, 1, 1, 1] [2021-08-30 19:11:44,112 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-08-30 19:11:44,112 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr1ENSURES_VIOLATIONMEMORY_LEAK] === [2021-08-30 19:11:44,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 19:11:44,112 INFO L82 PathProgramCache]: Analyzing trace with hash 558157094, now seen corresponding path program 1 times [2021-08-30 19:11:44,113 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 19:11:44,113 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276222750] [2021-08-30 19:11:44,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:11:44,113 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 19:11:44,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:11:44,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:11:44,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:11:44,164 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 19:11:44,164 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 19:11:44,164 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276222750] [2021-08-30 19:11:44,164 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276222750] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 19:11:44,164 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 19:11:44,164 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-30 19:11:44,165 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139665200] [2021-08-30 19:11:44,165 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-30 19:11:44,165 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 19:11:44,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-30 19:11:44,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-30 19:11:44,166 INFO L87 Difference]: Start difference. First operand 601 states and 1015 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 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 19:11:44,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 19:11:44,352 INFO L93 Difference]: Finished difference Result 1099 states and 1872 transitions. [2021-08-30 19:11:44,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-30 19:11:44,352 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 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 27 [2021-08-30 19:11:44,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 19:11:44,356 INFO L225 Difference]: With dead ends: 1099 [2021-08-30 19:11:44,357 INFO L226 Difference]: Without dead ends: 1099 [2021-08-30 19:11:44,357 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 32.32ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-30 19:11:44,358 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 174 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 131.25ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.33ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 155.20ms IncrementalHoareTripleChecker+Time [2021-08-30 19:11:44,358 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [174 Valid, 7 Invalid, 155 Unknown, 0 Unchecked, 1.33ms Time], IncrementalHoareTripleChecker [2 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 155.20ms Time] [2021-08-30 19:11:44,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1099 states. [2021-08-30 19:11:44,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1099 to 841. [2021-08-30 19:11:44,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 841 states, 837 states have (on average 1.6583034647550776) internal successors, (1388), 837 states have internal predecessors, (1388), 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 19:11:44,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 841 states to 841 states and 1391 transitions. [2021-08-30 19:11:44,380 INFO L78 Accepts]: Start accepts. Automaton has 841 states and 1391 transitions. Word has length 27 [2021-08-30 19:11:44,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 19:11:44,380 INFO L470 AbstractCegarLoop]: Abstraction has 841 states and 1391 transitions. [2021-08-30 19:11:44,381 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 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 19:11:44,381 INFO L276 IsEmpty]: Start isEmpty. Operand 841 states and 1391 transitions. [2021-08-30 19:11:44,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-08-30 19:11:44,383 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 19:11:44,383 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, 1, 1, 1, 1, 1] [2021-08-30 19:11:44,383 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-08-30 19:11:44,383 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr1ENSURES_VIOLATIONMEMORY_LEAK] === [2021-08-30 19:11:44,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 19:11:44,384 INFO L82 PathProgramCache]: Analyzing trace with hash -721706584, now seen corresponding path program 1 times [2021-08-30 19:11:44,384 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 19:11:44,384 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209710504] [2021-08-30 19:11:44,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:11:44,384 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 19:11:44,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:11:44,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:11:44,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:11:44,434 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 19:11:44,434 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 19:11:44,434 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209710504] [2021-08-30 19:11:44,434 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209710504] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 19:11:44,434 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 19:11:44,434 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-30 19:11:44,435 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687051400] [2021-08-30 19:11:44,435 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-30 19:11:44,435 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 19:11:44,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-30 19:11:44,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-30 19:11:44,436 INFO L87 Difference]: Start difference. First operand 841 states and 1391 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 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 19:11:44,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 19:11:44,632 INFO L93 Difference]: Finished difference Result 1163 states and 1912 transitions. [2021-08-30 19:11:44,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-30 19:11:44,633 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 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 27 [2021-08-30 19:11:44,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 19:11:44,637 INFO L225 Difference]: With dead ends: 1163 [2021-08-30 19:11:44,637 INFO L226 Difference]: Without dead ends: 1163 [2021-08-30 19:11:44,637 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 31.77ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-30 19:11:44,638 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 154 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 134.91ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.50ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 164.72ms IncrementalHoareTripleChecker+Time [2021-08-30 19:11:44,638 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [154 Valid, 7 Invalid, 187 Unknown, 0 Unchecked, 1.50ms Time], IncrementalHoareTripleChecker [3 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 164.72ms Time] [2021-08-30 19:11:44,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1163 states. [2021-08-30 19:11:44,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1163 to 1161. [2021-08-30 19:11:44,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1161 states, 1157 states have (on average 1.6490924805531546) internal successors, (1908), 1157 states have internal predecessors, (1908), 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 19:11:44,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1161 states to 1161 states and 1911 transitions. [2021-08-30 19:11:44,663 INFO L78 Accepts]: Start accepts. Automaton has 1161 states and 1911 transitions. Word has length 27 [2021-08-30 19:11:44,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 19:11:44,664 INFO L470 AbstractCegarLoop]: Abstraction has 1161 states and 1911 transitions. [2021-08-30 19:11:44,664 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 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 19:11:44,664 INFO L276 IsEmpty]: Start isEmpty. Operand 1161 states and 1911 transitions. [2021-08-30 19:11:44,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-08-30 19:11:44,665 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 19:11:44,665 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, 1, 1, 1, 1, 1, 1] [2021-08-30 19:11:44,666 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-08-30 19:11:44,666 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr1ENSURES_VIOLATIONMEMORY_LEAK] === [2021-08-30 19:11:44,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 19:11:44,666 INFO L82 PathProgramCache]: Analyzing trace with hash 123214829, now seen corresponding path program 1 times [2021-08-30 19:11:44,666 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 19:11:44,667 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269000264] [2021-08-30 19:11:44,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:11:44,667 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 19:11:44,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:11:44,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:11:44,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:11:44,731 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 19:11:44,731 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 19:11:44,731 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269000264] [2021-08-30 19:11:44,731 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269000264] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 19:11:44,732 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 19:11:44,732 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-30 19:11:44,732 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827799537] [2021-08-30 19:11:44,732 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-30 19:11:44,732 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 19:11:44,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-30 19:11:44,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-30 19:11:44,733 INFO L87 Difference]: Start difference. First operand 1161 states and 1911 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 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 19:11:44,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 19:11:44,915 INFO L93 Difference]: Finished difference Result 1179 states and 1912 transitions. [2021-08-30 19:11:44,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-30 19:11:44,915 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 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 28 [2021-08-30 19:11:44,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 19:11:44,919 INFO L225 Difference]: With dead ends: 1179 [2021-08-30 19:11:44,920 INFO L226 Difference]: Without dead ends: 1179 [2021-08-30 19:11:44,921 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 30.30ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-30 19:11:44,922 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 153 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 126.63ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.38ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 152.60ms IncrementalHoareTripleChecker+Time [2021-08-30 19:11:44,922 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [153 Valid, 7 Invalid, 187 Unknown, 0 Unchecked, 1.38ms Time], IncrementalHoareTripleChecker [2 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 152.60ms Time] [2021-08-30 19:11:44,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1179 states. [2021-08-30 19:11:44,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1179 to 1177. [2021-08-30 19:11:44,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1177 states, 1173 states have (on average 1.6265984654731458) internal successors, (1908), 1173 states have internal predecessors, (1908), 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 19:11:44,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1177 states to 1177 states and 1911 transitions. [2021-08-30 19:11:44,957 INFO L78 Accepts]: Start accepts. Automaton has 1177 states and 1911 transitions. Word has length 28 [2021-08-30 19:11:44,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 19:11:44,957 INFO L470 AbstractCegarLoop]: Abstraction has 1177 states and 1911 transitions. [2021-08-30 19:11:44,958 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 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 19:11:44,958 INFO L276 IsEmpty]: Start isEmpty. Operand 1177 states and 1911 transitions. [2021-08-30 19:11:44,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-08-30 19:11:44,960 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 19:11:44,960 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, 1, 1, 1, 1, 1, 1] [2021-08-30 19:11:44,960 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-08-30 19:11:44,960 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr1ENSURES_VIOLATIONMEMORY_LEAK] === [2021-08-30 19:11:44,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 19:11:44,961 INFO L82 PathProgramCache]: Analyzing trace with hash -897853525, now seen corresponding path program 1 times [2021-08-30 19:11:44,961 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 19:11:44,961 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693277041] [2021-08-30 19:11:44,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:11:44,961 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 19:11:44,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:11:44,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:11:44,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:11:45,013 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 19:11:45,013 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 19:11:45,013 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693277041] [2021-08-30 19:11:45,013 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693277041] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 19:11:45,013 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 19:11:45,013 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-30 19:11:45,013 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332956122] [2021-08-30 19:11:45,014 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-30 19:11:45,014 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 19:11:45,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-30 19:11:45,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-30 19:11:45,014 INFO L87 Difference]: Start difference. First operand 1177 states and 1911 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 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 19:11:45,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 19:11:45,196 INFO L93 Difference]: Finished difference Result 2123 states and 3480 transitions. [2021-08-30 19:11:45,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-30 19:11:45,197 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 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 28 [2021-08-30 19:11:45,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 19:11:45,205 INFO L225 Difference]: With dead ends: 2123 [2021-08-30 19:11:45,205 INFO L226 Difference]: Without dead ends: 2123 [2021-08-30 19:11:45,205 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 29.03ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-30 19:11:45,207 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 167 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 124.27ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.38ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 148.32ms IncrementalHoareTripleChecker+Time [2021-08-30 19:11:45,207 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [167 Valid, 7 Invalid, 153 Unknown, 0 Unchecked, 1.38ms Time], IncrementalHoareTripleChecker [2 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 148.32ms Time] [2021-08-30 19:11:45,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2123 states. [2021-08-30 19:11:45,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2123 to 1673. [2021-08-30 19:11:45,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1673 states, 1669 states have (on average 1.5841821449970042) internal successors, (2644), 1669 states have internal predecessors, (2644), 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 19:11:45,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1673 states to 1673 states and 2647 transitions. [2021-08-30 19:11:45,259 INFO L78 Accepts]: Start accepts. Automaton has 1673 states and 2647 transitions. Word has length 28 [2021-08-30 19:11:45,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 19:11:45,261 INFO L470 AbstractCegarLoop]: Abstraction has 1673 states and 2647 transitions. [2021-08-30 19:11:45,261 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 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 19:11:45,261 INFO L276 IsEmpty]: Start isEmpty. Operand 1673 states and 2647 transitions. [2021-08-30 19:11:45,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-08-30 19:11:45,264 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 19:11:45,264 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, 1, 1, 1, 1, 1, 1] [2021-08-30 19:11:45,264 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-08-30 19:11:45,264 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr1ENSURES_VIOLATIONMEMORY_LEAK] === [2021-08-30 19:11:45,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 19:11:45,265 INFO L82 PathProgramCache]: Analyzing trace with hash 2117250093, now seen corresponding path program 1 times [2021-08-30 19:11:45,265 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 19:11:45,265 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229898569] [2021-08-30 19:11:45,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:11:45,265 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 19:11:45,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:11:45,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:11:45,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:11:45,306 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 19:11:45,306 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 19:11:45,307 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229898569] [2021-08-30 19:11:45,307 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229898569] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 19:11:45,307 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 19:11:45,307 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-30 19:11:45,307 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005872112] [2021-08-30 19:11:45,308 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-30 19:11:45,308 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 19:11:45,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-30 19:11:45,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-30 19:11:45,309 INFO L87 Difference]: Start difference. First operand 1673 states and 2647 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 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 19:11:45,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 19:11:45,503 INFO L93 Difference]: Finished difference Result 2283 states and 3592 transitions. [2021-08-30 19:11:45,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-30 19:11:45,504 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 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 28 [2021-08-30 19:11:45,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 19:11:45,512 INFO L225 Difference]: With dead ends: 2283 [2021-08-30 19:11:45,512 INFO L226 Difference]: Without dead ends: 2283 [2021-08-30 19:11:45,512 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 30.60ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-30 19:11:45,514 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 148 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 130.92ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.46ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 157.81ms IncrementalHoareTripleChecker+Time [2021-08-30 19:11:45,514 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [148 Valid, 7 Invalid, 188 Unknown, 0 Unchecked, 1.46ms Time], IncrementalHoareTripleChecker [3 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 157.81ms Time] [2021-08-30 19:11:45,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2283 states. [2021-08-30 19:11:45,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2283 to 2281. [2021-08-30 19:11:45,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2281 states, 2277 states have (on average 1.5757575757575757) internal successors, (3588), 2277 states have internal predecessors, (3588), 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 19:11:45,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2281 states to 2281 states and 3591 transitions. [2021-08-30 19:11:45,580 INFO L78 Accepts]: Start accepts. Automaton has 2281 states and 3591 transitions. Word has length 28 [2021-08-30 19:11:45,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 19:11:45,580 INFO L470 AbstractCegarLoop]: Abstraction has 2281 states and 3591 transitions. [2021-08-30 19:11:45,580 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 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 19:11:45,580 INFO L276 IsEmpty]: Start isEmpty. Operand 2281 states and 3591 transitions. [2021-08-30 19:11:45,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-08-30 19:11:45,583 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 19:11:45,583 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, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 19:11:45,583 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-08-30 19:11:45,583 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting mainErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr1ENSURES_VIOLATIONMEMORY_LEAK] === [2021-08-30 19:11:45,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 19:11:45,584 INFO L82 PathProgramCache]: Analyzing trace with hash -2063441059, now seen corresponding path program 1 times [2021-08-30 19:11:45,584 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 19:11:45,585 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808617245] [2021-08-30 19:11:45,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:11:45,585 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 19:11:45,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:11:45,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:11:45,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:11:45,628 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 19:11:45,628 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 19:11:45,628 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808617245] [2021-08-30 19:11:45,628 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808617245] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 19:11:45,628 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 19:11:45,628 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-30 19:11:45,629 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972816844] [2021-08-30 19:11:45,629 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-30 19:11:45,629 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 19:11:45,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-30 19:11:45,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-30 19:11:45,630 INFO L87 Difference]: Start difference. First operand 2281 states and 3591 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 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 19:11:45,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 19:11:45,805 INFO L93 Difference]: Finished difference Result 2315 states and 3592 transitions. [2021-08-30 19:11:45,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-30 19:11:45,805 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 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 29 [2021-08-30 19:11:45,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 19:11:45,813 INFO L225 Difference]: With dead ends: 2315 [2021-08-30 19:11:45,814 INFO L226 Difference]: Without dead ends: 2315 [2021-08-30 19:11:45,814 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 28.14ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-30 19:11:45,815 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 152 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 122.19ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.33ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 145.42ms IncrementalHoareTripleChecker+Time [2021-08-30 19:11:45,815 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [152 Valid, 7 Invalid, 183 Unknown, 0 Unchecked, 1.33ms Time], IncrementalHoareTripleChecker [2 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 145.42ms Time] [2021-08-30 19:11:45,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2315 states. [2021-08-30 19:11:45,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2315 to 2313. [2021-08-30 19:11:45,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2313 states, 2309 states have (on average 1.5539194456474665) internal successors, (3588), 2309 states have internal predecessors, (3588), 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 19:11:45,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2313 states to 2313 states and 3591 transitions. [2021-08-30 19:11:45,884 INFO L78 Accepts]: Start accepts. Automaton has 2313 states and 3591 transitions. Word has length 29 [2021-08-30 19:11:45,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 19:11:45,884 INFO L470 AbstractCegarLoop]: Abstraction has 2313 states and 3591 transitions. [2021-08-30 19:11:45,884 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 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 19:11:45,884 INFO L276 IsEmpty]: Start isEmpty. Operand 2313 states and 3591 transitions. [2021-08-30 19:11:45,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-08-30 19:11:45,887 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 19:11:45,887 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, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 19:11:45,887 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-08-30 19:11:45,887 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting mainErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr1ENSURES_VIOLATIONMEMORY_LEAK] === [2021-08-30 19:11:45,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 19:11:45,888 INFO L82 PathProgramCache]: Analyzing trace with hash 1210457883, now seen corresponding path program 1 times [2021-08-30 19:11:45,888 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 19:11:45,888 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901143335] [2021-08-30 19:11:45,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:11:45,888 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 19:11:45,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:11:45,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:11:45,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:11:45,928 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 19:11:45,928 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 19:11:45,929 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901143335] [2021-08-30 19:11:45,929 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901143335] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 19:11:45,929 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 19:11:45,929 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-30 19:11:45,929 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445951789] [2021-08-30 19:11:45,931 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-30 19:11:45,931 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 19:11:45,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-30 19:11:45,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-30 19:11:45,932 INFO L87 Difference]: Start difference. First operand 2313 states and 3591 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 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 19:11:46,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 19:11:46,108 INFO L93 Difference]: Finished difference Result 4107 states and 6440 transitions. [2021-08-30 19:11:46,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-30 19:11:46,109 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 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 29 [2021-08-30 19:11:46,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 19:11:46,123 INFO L225 Difference]: With dead ends: 4107 [2021-08-30 19:11:46,123 INFO L226 Difference]: Without dead ends: 4107 [2021-08-30 19:11:46,123 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 30.56ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-30 19:11:46,124 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 160 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 115.68ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.62ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 139.26ms IncrementalHoareTripleChecker+Time [2021-08-30 19:11:46,124 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [160 Valid, 7 Invalid, 151 Unknown, 0 Unchecked, 1.62ms Time], IncrementalHoareTripleChecker [2 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 139.26ms Time] [2021-08-30 19:11:46,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4107 states. [2021-08-30 19:11:46,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4107 to 3337. [2021-08-30 19:11:46,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3337 states, 3333 states have (on average 1.5085508550855085) internal successors, (5028), 3333 states have internal predecessors, (5028), 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 19:11:46,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3337 states to 3337 states and 5031 transitions. [2021-08-30 19:11:46,212 INFO L78 Accepts]: Start accepts. Automaton has 3337 states and 5031 transitions. Word has length 29 [2021-08-30 19:11:46,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 19:11:46,212 INFO L470 AbstractCegarLoop]: Abstraction has 3337 states and 5031 transitions. [2021-08-30 19:11:46,212 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 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 19:11:46,213 INFO L276 IsEmpty]: Start isEmpty. Operand 3337 states and 5031 transitions. [2021-08-30 19:11:46,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-08-30 19:11:46,217 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 19:11:46,217 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, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 19:11:46,217 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-08-30 19:11:46,217 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting mainErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr1ENSURES_VIOLATIONMEMORY_LEAK] === [2021-08-30 19:11:46,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 19:11:46,218 INFO L82 PathProgramCache]: Analyzing trace with hash -69405795, now seen corresponding path program 1 times [2021-08-30 19:11:46,218 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 19:11:46,218 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436799313] [2021-08-30 19:11:46,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:11:46,219 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 19:11:46,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:11:46,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:11:46,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:11:46,250 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 19:11:46,250 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 19:11:46,250 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436799313] [2021-08-30 19:11:46,250 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436799313] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 19:11:46,251 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 19:11:46,251 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-30 19:11:46,251 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829730287] [2021-08-30 19:11:46,251 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-30 19:11:46,251 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 19:11:46,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-30 19:11:46,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-30 19:11:46,252 INFO L87 Difference]: Start difference. First operand 3337 states and 5031 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 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 19:11:46,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 19:11:46,459 INFO L93 Difference]: Finished difference Result 4491 states and 6728 transitions. [2021-08-30 19:11:46,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-30 19:11:46,460 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 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 29 [2021-08-30 19:11:46,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 19:11:46,474 INFO L225 Difference]: With dead ends: 4491 [2021-08-30 19:11:46,474 INFO L226 Difference]: Without dead ends: 4491 [2021-08-30 19:11:46,474 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 29.93ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-30 19:11:46,475 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 142 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 147.16ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.23ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 173.43ms IncrementalHoareTripleChecker+Time [2021-08-30 19:11:46,475 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [142 Valid, 7 Invalid, 189 Unknown, 0 Unchecked, 1.23ms Time], IncrementalHoareTripleChecker [3 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 173.43ms Time] [2021-08-30 19:11:46,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4491 states. [2021-08-30 19:11:46,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4491 to 4489. [2021-08-30 19:11:46,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4489 states, 4485 states have (on average 1.4992196209587514) internal successors, (6724), 4485 states have internal predecessors, (6724), 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 19:11:46,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4489 states to 4489 states and 6727 transitions. [2021-08-30 19:11:46,569 INFO L78 Accepts]: Start accepts. Automaton has 4489 states and 6727 transitions. Word has length 29 [2021-08-30 19:11:46,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 19:11:46,569 INFO L470 AbstractCegarLoop]: Abstraction has 4489 states and 6727 transitions. [2021-08-30 19:11:46,569 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 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 19:11:46,569 INFO L276 IsEmpty]: Start isEmpty. Operand 4489 states and 6727 transitions. [2021-08-30 19:11:46,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-08-30 19:11:46,574 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 19:11:46,574 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 19:11:46,575 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-08-30 19:11:46,575 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting mainErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr1ENSURES_VIOLATIONMEMORY_LEAK] === [2021-08-30 19:11:46,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 19:11:46,575 INFO L82 PathProgramCache]: Analyzing trace with hash -1130296510, now seen corresponding path program 1 times [2021-08-30 19:11:46,576 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 19:11:46,576 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099305012] [2021-08-30 19:11:46,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:11:46,576 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 19:11:46,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:11:46,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:11:46,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:11:46,611 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 19:11:46,611 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 19:11:46,612 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099305012] [2021-08-30 19:11:46,612 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099305012] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 19:11:46,612 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 19:11:46,612 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-30 19:11:46,612 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788071395] [2021-08-30 19:11:46,613 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-30 19:11:46,613 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 19:11:46,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-30 19:11:46,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-30 19:11:46,614 INFO L87 Difference]: Start difference. First operand 4489 states and 6727 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 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 19:11:46,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 19:11:46,829 INFO L93 Difference]: Finished difference Result 4555 states and 6728 transitions. [2021-08-30 19:11:46,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-30 19:11:46,830 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 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 30 [2021-08-30 19:11:46,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 19:11:46,852 INFO L225 Difference]: With dead ends: 4555 [2021-08-30 19:11:46,852 INFO L226 Difference]: Without dead ends: 4555 [2021-08-30 19:11:46,852 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 30.62ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-30 19:11:46,853 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 151 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 145.53ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.46ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 181.31ms IncrementalHoareTripleChecker+Time [2021-08-30 19:11:46,853 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [151 Valid, 7 Invalid, 179 Unknown, 0 Unchecked, 1.46ms Time], IncrementalHoareTripleChecker [2 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 181.31ms Time] [2021-08-30 19:11:46,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4555 states. [2021-08-30 19:11:46,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4555 to 4553. [2021-08-30 19:11:46,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4553 states, 4549 states have (on average 1.478127060892504) internal successors, (6724), 4549 states have internal predecessors, (6724), 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 19:11:46,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4553 states to 4553 states and 6727 transitions. [2021-08-30 19:11:46,919 INFO L78 Accepts]: Start accepts. Automaton has 4553 states and 6727 transitions. Word has length 30 [2021-08-30 19:11:46,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 19:11:46,919 INFO L470 AbstractCegarLoop]: Abstraction has 4553 states and 6727 transitions. [2021-08-30 19:11:46,919 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 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 19:11:46,919 INFO L276 IsEmpty]: Start isEmpty. Operand 4553 states and 6727 transitions. [2021-08-30 19:11:46,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-08-30 19:11:46,924 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 19:11:46,924 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 19:11:46,924 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-08-30 19:11:46,924 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting mainErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr1ENSURES_VIOLATIONMEMORY_LEAK] === [2021-08-30 19:11:46,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 19:11:46,924 INFO L82 PathProgramCache]: Analyzing trace with hash 2143602432, now seen corresponding path program 1 times [2021-08-30 19:11:46,925 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 19:11:46,925 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035113077] [2021-08-30 19:11:46,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:11:46,925 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 19:11:46,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:11:46,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:11:46,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:11:46,957 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 19:11:46,958 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 19:11:46,958 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035113077] [2021-08-30 19:11:46,958 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035113077] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 19:11:46,958 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 19:11:46,958 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-30 19:11:46,958 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574617772] [2021-08-30 19:11:46,959 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-30 19:11:46,959 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 19:11:46,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-30 19:11:46,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-30 19:11:46,960 INFO L87 Difference]: Start difference. First operand 4553 states and 6727 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 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 19:11:47,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 19:11:47,126 INFO L93 Difference]: Finished difference Result 7947 states and 11848 transitions. [2021-08-30 19:11:47,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-30 19:11:47,128 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 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 30 [2021-08-30 19:11:47,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 19:11:47,162 INFO L225 Difference]: With dead ends: 7947 [2021-08-30 19:11:47,162 INFO L226 Difference]: Without dead ends: 7947 [2021-08-30 19:11:47,162 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 30.41ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-30 19:11:47,163 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 153 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 105.36ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.17ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 126.38ms IncrementalHoareTripleChecker+Time [2021-08-30 19:11:47,163 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [153 Valid, 7 Invalid, 149 Unknown, 0 Unchecked, 1.17ms Time], IncrementalHoareTripleChecker [2 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 126.38ms Time] [2021-08-30 19:11:47,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7947 states. [2021-08-30 19:11:47,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7947 to 6665. [2021-08-30 19:11:47,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6665 states, 6661 states have (on average 1.4322173847770605) internal successors, (9540), 6661 states have internal predecessors, (9540), 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 19:11:47,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6665 states to 6665 states and 9543 transitions. [2021-08-30 19:11:47,260 INFO L78 Accepts]: Start accepts. Automaton has 6665 states and 9543 transitions. Word has length 30 [2021-08-30 19:11:47,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 19:11:47,260 INFO L470 AbstractCegarLoop]: Abstraction has 6665 states and 9543 transitions. [2021-08-30 19:11:47,261 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 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 19:11:47,261 INFO L276 IsEmpty]: Start isEmpty. Operand 6665 states and 9543 transitions. [2021-08-30 19:11:47,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-08-30 19:11:47,269 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 19:11:47,269 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 19:11:47,270 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-08-30 19:11:47,270 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting mainErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr1ENSURES_VIOLATIONMEMORY_LEAK] === [2021-08-30 19:11:47,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 19:11:47,270 INFO L82 PathProgramCache]: Analyzing trace with hash 863738754, now seen corresponding path program 1 times [2021-08-30 19:11:47,270 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 19:11:47,270 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607400516] [2021-08-30 19:11:47,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:11:47,271 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 19:11:47,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:11:47,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:11:47,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:11:47,304 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 19:11:47,304 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 19:11:47,304 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607400516] [2021-08-30 19:11:47,304 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607400516] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 19:11:47,304 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 19:11:47,304 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-30 19:11:47,305 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714843567] [2021-08-30 19:11:47,305 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-30 19:11:47,305 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 19:11:47,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-30 19:11:47,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-30 19:11:47,306 INFO L87 Difference]: Start difference. First operand 6665 states and 9543 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 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 19:11:47,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 19:11:47,521 INFO L93 Difference]: Finished difference Result 8843 states and 12552 transitions. [2021-08-30 19:11:47,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-30 19:11:47,522 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 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 30 [2021-08-30 19:11:47,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 19:11:47,536 INFO L225 Difference]: With dead ends: 8843 [2021-08-30 19:11:47,536 INFO L226 Difference]: Without dead ends: 8843 [2021-08-30 19:11:47,537 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 59.08ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-30 19:11:47,537 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 136 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 113.73ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.18ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 141.31ms IncrementalHoareTripleChecker+Time [2021-08-30 19:11:47,537 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [136 Valid, 7 Invalid, 190 Unknown, 0 Unchecked, 1.18ms Time], IncrementalHoareTripleChecker [3 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 141.31ms Time] [2021-08-30 19:11:47,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8843 states. [2021-08-30 19:11:47,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8843 to 8841. [2021-08-30 19:11:47,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8841 states, 8837 states have (on average 1.419938893289578) internal successors, (12548), 8837 states have internal predecessors, (12548), 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 19:11:47,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8841 states to 8841 states and 12551 transitions. [2021-08-30 19:11:47,695 INFO L78 Accepts]: Start accepts. Automaton has 8841 states and 12551 transitions. Word has length 30 [2021-08-30 19:11:47,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 19:11:47,695 INFO L470 AbstractCegarLoop]: Abstraction has 8841 states and 12551 transitions. [2021-08-30 19:11:47,696 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 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 19:11:47,696 INFO L276 IsEmpty]: Start isEmpty. Operand 8841 states and 12551 transitions. [2021-08-30 19:11:47,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-08-30 19:11:47,705 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 19:11:47,705 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 19:11:47,705 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-08-30 19:11:47,706 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting mainErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr1ENSURES_VIOLATIONMEMORY_LEAK] === [2021-08-30 19:11:47,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 19:11:47,706 INFO L82 PathProgramCache]: Analyzing trace with hash 2027381074, now seen corresponding path program 1 times [2021-08-30 19:11:47,706 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 19:11:47,706 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53688195] [2021-08-30 19:11:47,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:11:47,707 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 19:11:47,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:11:47,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:11:47,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:11:47,741 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 19:11:47,741 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 19:11:47,742 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53688195] [2021-08-30 19:11:47,742 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53688195] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 19:11:47,742 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 19:11:47,742 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-30 19:11:47,742 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601876110] [2021-08-30 19:11:47,742 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-30 19:11:47,743 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 19:11:47,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-30 19:11:47,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-30 19:11:47,743 INFO L87 Difference]: Start difference. First operand 8841 states and 12551 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 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 19:11:47,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 19:11:47,939 INFO L93 Difference]: Finished difference Result 8971 states and 12552 transitions. [2021-08-30 19:11:47,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-30 19:11:47,939 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 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 31 [2021-08-30 19:11:47,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 19:11:47,955 INFO L225 Difference]: With dead ends: 8971 [2021-08-30 19:11:47,955 INFO L226 Difference]: Without dead ends: 8971 [2021-08-30 19:11:47,956 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 30.98ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-30 19:11:47,956 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 150 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 122.52ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.06ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 146.11ms IncrementalHoareTripleChecker+Time [2021-08-30 19:11:47,957 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [150 Valid, 7 Invalid, 175 Unknown, 0 Unchecked, 1.06ms Time], IncrementalHoareTripleChecker [2 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 146.11ms Time] [2021-08-30 19:11:47,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8971 states. [2021-08-30 19:11:48,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8971 to 8969. [2021-08-30 19:11:48,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8969 states, 8965 states have (on average 1.399665365309537) internal successors, (12548), 8965 states have internal predecessors, (12548), 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 19:11:48,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8969 states to 8969 states and 12551 transitions. [2021-08-30 19:11:48,147 INFO L78 Accepts]: Start accepts. Automaton has 8969 states and 12551 transitions. Word has length 31 [2021-08-30 19:11:48,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 19:11:48,148 INFO L470 AbstractCegarLoop]: Abstraction has 8969 states and 12551 transitions. [2021-08-30 19:11:48,148 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 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 19:11:48,148 INFO L276 IsEmpty]: Start isEmpty. Operand 8969 states and 12551 transitions. [2021-08-30 19:11:48,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-08-30 19:11:48,157 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 19:11:48,157 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 19:11:48,157 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-08-30 19:11:48,158 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting mainErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr1ENSURES_VIOLATIONMEMORY_LEAK] === [2021-08-30 19:11:48,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 19:11:48,158 INFO L82 PathProgramCache]: Analyzing trace with hash 1006312720, now seen corresponding path program 1 times [2021-08-30 19:11:48,158 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 19:11:48,159 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321081007] [2021-08-30 19:11:48,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:11:48,159 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 19:11:48,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:11:48,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:11:48,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:11:48,198 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 19:11:48,198 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 19:11:48,198 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321081007] [2021-08-30 19:11:48,198 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321081007] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 19:11:48,199 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 19:11:48,199 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-30 19:11:48,199 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456068230] [2021-08-30 19:11:48,199 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-30 19:11:48,200 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 19:11:48,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-30 19:11:48,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-30 19:11:48,200 INFO L87 Difference]: Start difference. First operand 8969 states and 12551 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 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 19:11:48,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 19:11:48,359 INFO L93 Difference]: Finished difference Result 15371 states and 21640 transitions. [2021-08-30 19:11:48,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-30 19:11:48,359 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 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 31 [2021-08-30 19:11:48,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 19:11:48,388 INFO L225 Difference]: With dead ends: 15371 [2021-08-30 19:11:48,388 INFO L226 Difference]: Without dead ends: 15371 [2021-08-30 19:11:48,388 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 26.42ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-30 19:11:48,389 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 146 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 90.14ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.75ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 106.49ms IncrementalHoareTripleChecker+Time [2021-08-30 19:11:48,389 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [146 Valid, 7 Invalid, 147 Unknown, 0 Unchecked, 0.75ms Time], IncrementalHoareTripleChecker [2 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 106.49ms Time] [2021-08-30 19:11:48,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15371 states. [2021-08-30 19:11:48,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15371 to 13321. [2021-08-30 19:11:48,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13321 states, 13317 states have (on average 1.355560561688068) internal successors, (18052), 13317 states have internal predecessors, (18052), 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 19:11:48,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13321 states to 13321 states and 18055 transitions. [2021-08-30 19:11:48,657 INFO L78 Accepts]: Start accepts. Automaton has 13321 states and 18055 transitions. Word has length 31 [2021-08-30 19:11:48,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 19:11:48,658 INFO L470 AbstractCegarLoop]: Abstraction has 13321 states and 18055 transitions. [2021-08-30 19:11:48,658 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 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 19:11:48,658 INFO L276 IsEmpty]: Start isEmpty. Operand 13321 states and 18055 transitions. [2021-08-30 19:11:48,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-08-30 19:11:48,674 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 19:11:48,674 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 19:11:48,674 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-08-30 19:11:48,674 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting mainErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr1ENSURES_VIOLATIONMEMORY_LEAK] === [2021-08-30 19:11:48,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 19:11:48,675 INFO L82 PathProgramCache]: Analyzing trace with hash -273550958, now seen corresponding path program 1 times [2021-08-30 19:11:48,675 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 19:11:48,675 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713343545] [2021-08-30 19:11:48,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:11:48,675 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 19:11:48,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:11:48,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:11:48,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:11:48,708 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 19:11:48,708 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 19:11:48,708 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713343545] [2021-08-30 19:11:48,709 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713343545] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 19:11:48,709 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 19:11:48,709 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-30 19:11:48,709 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186578193] [2021-08-30 19:11:48,709 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-30 19:11:48,709 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 19:11:48,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-30 19:11:48,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-30 19:11:48,710 INFO L87 Difference]: Start difference. First operand 13321 states and 18055 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 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 19:11:48,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 19:11:48,911 INFO L93 Difference]: Finished difference Result 17419 states and 23304 transitions. [2021-08-30 19:11:48,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-30 19:11:48,912 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 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 31 [2021-08-30 19:11:48,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 19:11:49,010 INFO L225 Difference]: With dead ends: 17419 [2021-08-30 19:11:49,010 INFO L226 Difference]: Without dead ends: 17419 [2021-08-30 19:11:49,011 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 32.45ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-30 19:11:49,011 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 130 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 109.43ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.03ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 134.37ms IncrementalHoareTripleChecker+Time [2021-08-30 19:11:49,011 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [130 Valid, 7 Invalid, 191 Unknown, 0 Unchecked, 1.03ms Time], IncrementalHoareTripleChecker [3 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 134.37ms Time] [2021-08-30 19:11:49,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17419 states. [2021-08-30 19:11:49,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17419 to 17417. [2021-08-30 19:11:49,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17417 states, 17413 states have (on average 1.3380807442715212) internal successors, (23300), 17413 states have internal predecessors, (23300), 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 19:11:49,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17417 states to 17417 states and 23303 transitions. [2021-08-30 19:11:49,263 INFO L78 Accepts]: Start accepts. Automaton has 17417 states and 23303 transitions. Word has length 31 [2021-08-30 19:11:49,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 19:11:49,263 INFO L470 AbstractCegarLoop]: Abstraction has 17417 states and 23303 transitions. [2021-08-30 19:11:49,263 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 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 19:11:49,264 INFO L276 IsEmpty]: Start isEmpty. Operand 17417 states and 23303 transitions. [2021-08-30 19:11:49,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-08-30 19:11:49,343 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 19:11:49,344 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 19:11:49,344 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-08-30 19:11:49,344 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting mainErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr1ENSURES_VIOLATIONMEMORY_LEAK] === [2021-08-30 19:11:49,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 19:11:49,344 INFO L82 PathProgramCache]: Analyzing trace with hash 1131138711, now seen corresponding path program 1 times [2021-08-30 19:11:49,344 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 19:11:49,345 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260953074] [2021-08-30 19:11:49,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:11:49,345 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 19:11:49,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:11:49,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:11:49,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:11:49,379 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 19:11:49,379 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 19:11:49,379 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260953074] [2021-08-30 19:11:49,379 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260953074] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 19:11:49,379 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 19:11:49,379 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-30 19:11:49,380 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663454973] [2021-08-30 19:11:49,380 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-30 19:11:49,380 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 19:11:49,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-30 19:11:49,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-30 19:11:49,381 INFO L87 Difference]: Start difference. First operand 17417 states and 23303 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 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 19:11:49,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 19:11:49,585 INFO L93 Difference]: Finished difference Result 17675 states and 23304 transitions. [2021-08-30 19:11:49,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-30 19:11:49,585 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 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 32 [2021-08-30 19:11:49,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 19:11:49,610 INFO L225 Difference]: With dead ends: 17675 [2021-08-30 19:11:49,610 INFO L226 Difference]: Without dead ends: 17675 [2021-08-30 19:11:49,610 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 31.70ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-30 19:11:49,611 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 149 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 115.41ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.83ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 138.22ms IncrementalHoareTripleChecker+Time [2021-08-30 19:11:49,611 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [149 Valid, 7 Invalid, 171 Unknown, 0 Unchecked, 0.83ms Time], IncrementalHoareTripleChecker [2 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 138.22ms Time] [2021-08-30 19:11:49,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17675 states. [2021-08-30 19:11:49,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17675 to 17673. [2021-08-30 19:11:49,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17673 states, 17669 states have (on average 1.3186937574282642) internal successors, (23300), 17669 states have internal predecessors, (23300), 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 19:11:49,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17673 states to 17673 states and 23303 transitions. [2021-08-30 19:11:49,853 INFO L78 Accepts]: Start accepts. Automaton has 17673 states and 23303 transitions. Word has length 32 [2021-08-30 19:11:49,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 19:11:49,853 INFO L470 AbstractCegarLoop]: Abstraction has 17673 states and 23303 transitions. [2021-08-30 19:11:49,853 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 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 19:11:49,853 INFO L276 IsEmpty]: Start isEmpty. Operand 17673 states and 23303 transitions. [2021-08-30 19:11:49,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-08-30 19:11:49,869 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 19:11:49,869 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 19:11:49,869 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-08-30 19:11:49,869 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting mainErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr1ENSURES_VIOLATIONMEMORY_LEAK] === [2021-08-30 19:11:49,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 19:11:49,870 INFO L82 PathProgramCache]: Analyzing trace with hash 110070357, now seen corresponding path program 1 times [2021-08-30 19:11:49,870 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 19:11:49,870 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350272417] [2021-08-30 19:11:49,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:11:49,870 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 19:11:49,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:11:49,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:11:49,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:11:49,904 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 19:11:49,905 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 19:11:49,905 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350272417] [2021-08-30 19:11:49,905 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350272417] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 19:11:49,905 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 19:11:49,905 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-30 19:11:49,905 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474457873] [2021-08-30 19:11:49,905 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-30 19:11:49,906 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 19:11:49,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-30 19:11:49,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-30 19:11:49,906 INFO L87 Difference]: Start difference. First operand 17673 states and 23303 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 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 19:11:50,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 19:11:50,225 INFO L93 Difference]: Finished difference Result 34315 states and 43528 transitions. [2021-08-30 19:11:50,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-30 19:11:50,225 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 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 32 [2021-08-30 19:11:50,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 19:11:50,279 INFO L225 Difference]: With dead ends: 34315 [2021-08-30 19:11:50,279 INFO L226 Difference]: Without dead ends: 34315 [2021-08-30 19:11:50,280 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 30.77ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-30 19:11:50,281 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 157 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 112.69ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.12ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 133.92ms IncrementalHoareTripleChecker+Time [2021-08-30 19:11:50,282 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [157 Valid, 7 Invalid, 163 Unknown, 0 Unchecked, 1.12ms Time], IncrementalHoareTripleChecker [3 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 133.92ms Time] [2021-08-30 19:11:50,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34315 states. [2021-08-30 19:11:50,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34315 to 34313. [2021-08-30 19:11:50,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34313 states, 34309 states have (on average 1.2685884170334314) internal successors, (43524), 34309 states have internal predecessors, (43524), 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 19:11:50,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34313 states to 34313 states and 43527 transitions. [2021-08-30 19:11:50,802 INFO L78 Accepts]: Start accepts. Automaton has 34313 states and 43527 transitions. Word has length 32 [2021-08-30 19:11:50,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 19:11:50,802 INFO L470 AbstractCegarLoop]: Abstraction has 34313 states and 43527 transitions. [2021-08-30 19:11:50,803 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 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 19:11:50,803 INFO L276 IsEmpty]: Start isEmpty. Operand 34313 states and 43527 transitions. [2021-08-30 19:11:50,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-08-30 19:11:50,830 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 19:11:50,830 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 19:11:50,830 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-08-30 19:11:50,831 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting mainErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr1ENSURES_VIOLATIONMEMORY_LEAK] === [2021-08-30 19:11:50,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 19:11:50,831 INFO L82 PathProgramCache]: Analyzing trace with hash 1389934035, now seen corresponding path program 1 times [2021-08-30 19:11:50,831 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 19:11:50,831 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899115019] [2021-08-30 19:11:50,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:11:50,832 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 19:11:50,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:11:50,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:11:50,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:11:50,871 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 19:11:50,871 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 19:11:50,871 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899115019] [2021-08-30 19:11:50,871 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899115019] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 19:11:50,871 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 19:11:50,872 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-30 19:11:50,872 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001673150] [2021-08-30 19:11:50,872 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-30 19:11:50,872 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 19:11:50,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-30 19:11:50,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-30 19:11:50,873 INFO L87 Difference]: Start difference. First operand 34313 states and 43527 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 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 19:11:51,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 19:11:51,103 INFO L93 Difference]: Finished difference Result 37387 states and 48136 transitions. [2021-08-30 19:11:51,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-30 19:11:51,104 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 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 32 [2021-08-30 19:11:51,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 19:11:51,161 INFO L225 Difference]: With dead ends: 37387 [2021-08-30 19:11:51,162 INFO L226 Difference]: Without dead ends: 37387 [2021-08-30 19:11:51,163 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 35.15ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-30 19:11:51,163 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 96 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 98.55ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.82ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 117.60ms IncrementalHoareTripleChecker+Time [2021-08-30 19:11:51,163 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [96 Valid, 7 Invalid, 182 Unknown, 0 Unchecked, 0.82ms Time], IncrementalHoareTripleChecker [2 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 117.60ms Time] [2021-08-30 19:11:51,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37387 states. [2021-08-30 19:11:51,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37387 to 34313. [2021-08-30 19:11:51,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34313 states, 34309 states have (on average 1.2536652190387363) internal successors, (43012), 34309 states have internal predecessors, (43012), 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 19:11:51,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34313 states to 34313 states and 43015 transitions. [2021-08-30 19:11:51,726 INFO L78 Accepts]: Start accepts. Automaton has 34313 states and 43015 transitions. Word has length 32 [2021-08-30 19:11:51,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 19:11:51,727 INFO L470 AbstractCegarLoop]: Abstraction has 34313 states and 43015 transitions. [2021-08-30 19:11:51,727 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 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 19:11:51,727 INFO L276 IsEmpty]: Start isEmpty. Operand 34313 states and 43015 transitions. [2021-08-30 19:11:51,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-08-30 19:11:51,743 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 19:11:51,744 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 19:11:51,744 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-08-30 19:11:51,744 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting mainErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr1ENSURES_VIOLATIONMEMORY_LEAK] === [2021-08-30 19:11:51,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 19:11:51,744 INFO L82 PathProgramCache]: Analyzing trace with hash -882570425, now seen corresponding path program 1 times [2021-08-30 19:11:51,745 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 19:11:51,745 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234651270] [2021-08-30 19:11:51,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:11:51,745 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 19:11:51,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:11:51,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:11:51,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:11:51,894 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 19:11:51,894 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 19:11:51,894 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234651270] [2021-08-30 19:11:51,894 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234651270] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 19:11:51,895 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 19:11:51,895 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-30 19:11:51,895 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030874314] [2021-08-30 19:11:51,895 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-30 19:11:51,895 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 19:11:51,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-30 19:11:51,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-30 19:11:51,896 INFO L87 Difference]: Start difference. First operand 34313 states and 43015 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 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 19:11:52,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 19:11:52,155 INFO L93 Difference]: Finished difference Result 56843 states and 70664 transitions. [2021-08-30 19:11:52,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-30 19:11:52,155 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 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 33 [2021-08-30 19:11:52,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 19:11:52,235 INFO L225 Difference]: With dead ends: 56843 [2021-08-30 19:11:52,235 INFO L226 Difference]: Without dead ends: 56843 [2021-08-30 19:11:52,236 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 33.53ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-30 19:11:52,236 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 132 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 94.45ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.81ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 112.26ms IncrementalHoareTripleChecker+Time [2021-08-30 19:11:52,236 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [132 Valid, 7 Invalid, 143 Unknown, 0 Unchecked, 0.81ms Time], IncrementalHoareTripleChecker [2 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 112.26ms Time] [2021-08-30 19:11:52,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56843 states. [2021-08-30 19:11:52,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56843 to 52745. [2021-08-30 19:11:52,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52745 states, 52741 states have (on average 1.2232608407121595) internal successors, (64516), 52741 states have internal predecessors, (64516), 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 19:11:52,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52745 states to 52745 states and 64519 transitions. [2021-08-30 19:11:52,952 INFO L78 Accepts]: Start accepts. Automaton has 52745 states and 64519 transitions. Word has length 33 [2021-08-30 19:11:52,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 19:11:52,952 INFO L470 AbstractCegarLoop]: Abstraction has 52745 states and 64519 transitions. [2021-08-30 19:11:52,952 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 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 19:11:52,952 INFO L276 IsEmpty]: Start isEmpty. Operand 52745 states and 64519 transitions. [2021-08-30 19:11:52,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-08-30 19:11:52,987 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 19:11:52,987 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 19:11:52,987 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-08-30 19:11:52,988 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting mainErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr1ENSURES_VIOLATIONMEMORY_LEAK] === [2021-08-30 19:11:52,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 19:11:52,988 INFO L82 PathProgramCache]: Analyzing trace with hash 2132533193, now seen corresponding path program 1 times [2021-08-30 19:11:52,988 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 19:11:52,988 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745227972] [2021-08-30 19:11:52,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:11:52,989 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 19:11:52,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:11:53,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:11:53,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:11:53,024 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 19:11:53,025 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 19:11:53,025 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745227972] [2021-08-30 19:11:53,025 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745227972] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 19:11:53,025 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 19:11:53,025 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-30 19:11:53,025 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890212053] [2021-08-30 19:11:53,026 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-30 19:11:53,026 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 19:11:53,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-30 19:11:53,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-30 19:11:53,027 INFO L87 Difference]: Start difference. First operand 52745 states and 64519 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 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 19:11:53,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 19:11:53,463 INFO L93 Difference]: Finished difference Result 67083 states and 79880 transitions. [2021-08-30 19:11:53,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-30 19:11:53,463 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 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 33 [2021-08-30 19:11:53,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 19:11:53,530 INFO L225 Difference]: With dead ends: 67083 [2021-08-30 19:11:53,530 INFO L226 Difference]: Without dead ends: 67083 [2021-08-30 19:11:53,530 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 26.21ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-30 19:11:53,531 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 118 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 132.55ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.04ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 159.94ms IncrementalHoareTripleChecker+Time [2021-08-30 19:11:53,531 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [118 Valid, 7 Invalid, 193 Unknown, 0 Unchecked, 1.04ms Time], IncrementalHoareTripleChecker [3 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 159.94ms Time] [2021-08-30 19:11:53,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67083 states. [2021-08-30 19:11:54,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67083 to 67081. [2021-08-30 19:11:54,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67081 states, 67077 states have (on average 1.1908105609970632) internal successors, (79876), 67077 states have internal predecessors, (79876), 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 19:11:54,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67081 states to 67081 states and 79879 transitions. [2021-08-30 19:11:54,366 INFO L78 Accepts]: Start accepts. Automaton has 67081 states and 79879 transitions. Word has length 33 [2021-08-30 19:11:54,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 19:11:54,366 INFO L470 AbstractCegarLoop]: Abstraction has 67081 states and 79879 transitions. [2021-08-30 19:11:54,366 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 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 19:11:54,366 INFO L276 IsEmpty]: Start isEmpty. Operand 67081 states and 79879 transitions. [2021-08-30 19:11:54,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-08-30 19:11:54,397 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 19:11:54,397 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 19:11:54,397 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-08-30 19:11:54,398 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting mainErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr1ENSURES_VIOLATIONMEMORY_LEAK] === [2021-08-30 19:11:54,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 19:11:54,398 INFO L82 PathProgramCache]: Analyzing trace with hash -1589663254, now seen corresponding path program 1 times [2021-08-30 19:11:54,398 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 19:11:54,398 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250987817] [2021-08-30 19:11:54,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:11:54,398 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 19:11:54,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:11:54,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:11:54,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:11:54,435 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 19:11:54,436 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 19:11:54,436 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250987817] [2021-08-30 19:11:54,436 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250987817] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 19:11:54,436 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 19:11:54,436 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-30 19:11:54,436 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274847081] [2021-08-30 19:11:54,437 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-30 19:11:54,437 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 19:11:54,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-30 19:11:54,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-30 19:11:54,438 INFO L87 Difference]: Start difference. First operand 67081 states and 79879 transitions. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 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 19:11:55,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 19:11:55,040 INFO L93 Difference]: Finished difference Result 68619 states and 80904 transitions. [2021-08-30 19:11:55,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-30 19:11:55,041 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 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 34 [2021-08-30 19:11:55,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 19:11:55,168 INFO L225 Difference]: With dead ends: 68619 [2021-08-30 19:11:55,168 INFO L226 Difference]: Without dead ends: 68619 [2021-08-30 19:11:55,170 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 26.57ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-30 19:11:55,170 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 147 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 105.09ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.14ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 126.59ms IncrementalHoareTripleChecker+Time [2021-08-30 19:11:55,171 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [147 Valid, 7 Invalid, 163 Unknown, 0 Unchecked, 1.14ms Time], IncrementalHoareTripleChecker [2 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 126.59ms Time] [2021-08-30 19:11:55,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68619 states. [2021-08-30 19:11:55,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68619 to 68617. [2021-08-30 19:11:55,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68617 states, 68613 states have (on average 1.1790768513255505) internal successors, (80900), 68613 states have internal predecessors, (80900), 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 19:11:56,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68617 states to 68617 states and 80903 transitions. [2021-08-30 19:11:56,013 INFO L78 Accepts]: Start accepts. Automaton has 68617 states and 80903 transitions. Word has length 34 [2021-08-30 19:11:56,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 19:11:56,013 INFO L470 AbstractCegarLoop]: Abstraction has 68617 states and 80903 transitions. [2021-08-30 19:11:56,013 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 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 19:11:56,014 INFO L276 IsEmpty]: Start isEmpty. Operand 68617 states and 80903 transitions. [2021-08-30 19:11:56,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-08-30 19:11:56,051 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 19:11:56,051 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 19:11:56,051 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-08-30 19:11:56,051 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting mainErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr1ENSURES_VIOLATIONMEMORY_LEAK] === [2021-08-30 19:11:56,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 19:11:56,052 INFO L82 PathProgramCache]: Analyzing trace with hash 1684235688, now seen corresponding path program 1 times [2021-08-30 19:11:56,052 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 19:11:56,052 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910547824] [2021-08-30 19:11:56,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:11:56,052 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 19:11:56,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:11:56,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:11:56,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:11:56,090 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 19:11:56,090 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 19:11:56,090 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910547824] [2021-08-30 19:11:56,090 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910547824] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 19:11:56,090 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 19:11:56,090 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-30 19:11:56,091 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850571687] [2021-08-30 19:11:56,091 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-30 19:11:56,091 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 19:11:56,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-30 19:11:56,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-30 19:11:56,092 INFO L87 Difference]: Start difference. First operand 68617 states and 80903 transitions. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 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 19:11:56,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 19:11:56,487 INFO L93 Difference]: Finished difference Result 110601 states and 126983 transitions. [2021-08-30 19:11:56,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-30 19:11:56,488 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 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 34 [2021-08-30 19:11:56,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 19:11:56,627 INFO L225 Difference]: With dead ends: 110601 [2021-08-30 19:11:56,628 INFO L226 Difference]: Without dead ends: 110601 [2021-08-30 19:11:56,628 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 31.25ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-30 19:11:56,628 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 124 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 91.66ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.87ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 109.62ms IncrementalHoareTripleChecker+Time [2021-08-30 19:11:56,629 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [124 Valid, 7 Invalid, 140 Unknown, 0 Unchecked, 0.87ms Time], IncrementalHoareTripleChecker [2 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 109.62ms Time] [2021-08-30 19:11:56,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110601 states. [2021-08-30 19:11:57,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110601 to 106505. [2021-08-30 19:11:58,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106505 states, 106501 states have (on average 1.1538295415066526) internal successors, (122884), 106501 states have internal predecessors, (122884), 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 19:11:58,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106505 states to 106505 states and 122887 transitions. [2021-08-30 19:11:58,202 INFO L78 Accepts]: Start accepts. Automaton has 106505 states and 122887 transitions. Word has length 34 [2021-08-30 19:11:58,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 19:11:58,202 INFO L470 AbstractCegarLoop]: Abstraction has 106505 states and 122887 transitions. [2021-08-30 19:11:58,203 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 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 19:11:58,203 INFO L276 IsEmpty]: Start isEmpty. Operand 106505 states and 122887 transitions. [2021-08-30 19:11:58,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-08-30 19:11:58,626 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 19:11:58,626 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 19:11:58,626 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-08-30 19:11:58,626 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting mainErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr1ENSURES_VIOLATIONMEMORY_LEAK] === [2021-08-30 19:11:58,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 19:11:58,631 INFO L82 PathProgramCache]: Analyzing trace with hash 404372010, now seen corresponding path program 1 times [2021-08-30 19:11:58,631 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 19:11:58,631 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793621454] [2021-08-30 19:11:58,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:11:58,631 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 19:11:58,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:11:58,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:11:58,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:11:58,698 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 19:11:58,698 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 19:11:58,698 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793621454] [2021-08-30 19:11:58,698 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793621454] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 19:11:58,698 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 19:11:58,699 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-30 19:11:58,699 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743218470] [2021-08-30 19:11:58,699 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-30 19:11:58,699 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 19:11:58,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-30 19:11:58,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-30 19:11:58,700 INFO L87 Difference]: Start difference. First operand 106505 states and 122887 transitions. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 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 19:11:59,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 19:11:59,240 INFO L93 Difference]: Finished difference Result 133127 states and 147462 transitions. [2021-08-30 19:11:59,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-30 19:11:59,240 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 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 34 [2021-08-30 19:11:59,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 19:11:59,241 INFO L225 Difference]: With dead ends: 133127 [2021-08-30 19:11:59,241 INFO L226 Difference]: Without dead ends: 0 [2021-08-30 19:11:59,241 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 27.91ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-30 19:11:59,242 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 109 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 136.36ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.29ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 160.53ms IncrementalHoareTripleChecker+Time [2021-08-30 19:11:59,242 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [109 Valid, 7 Invalid, 192 Unknown, 0 Unchecked, 1.29ms Time], IncrementalHoareTripleChecker [3 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 160.53ms Time] [2021-08-30 19:11:59,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-30 19:11:59,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-30 19:11:59,243 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 19:11:59,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-30 19:11:59,243 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 34 [2021-08-30 19:11:59,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 19:11:59,243 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-30 19:11:59,243 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 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 19:11:59,244 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-30 19:11:59,244 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-30 19:11:59,248 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr0ASSERT_VIOLATIONMEMORY_LEAK (1 of 2 remaining) [2021-08-30 19:11:59,251 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr1ENSURES_VIOLATIONMEMORY_LEAK (0 of 2 remaining) [2021-08-30 19:11:59,251 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-08-30 19:11:59,256 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-30 19:11:59,259 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 07:11:59 BoogieIcfgContainer [2021-08-30 19:11:59,260 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-30 19:11:59,260 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-30 19:11:59,260 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-30 19:11:59,260 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-30 19:11:59,261 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 07:11:39" (3/4) ... [2021-08-30 19:11:59,268 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-08-30 19:11:59,281 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure reach_error [2021-08-30 19:11:59,281 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2021-08-30 19:11:59,282 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2021-08-30 19:11:59,288 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2021-08-30 19:11:59,289 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-08-30 19:11:59,289 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-08-30 19:11:59,290 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-30 19:11:59,335 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-30 19:11:59,335 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-30 19:11:59,336 INFO L158 Benchmark]: Toolchain (without parser) took 20051.58ms. Allocated memory was 60.8MB in the beginning and 8.1GB in the end (delta: 8.1GB). Free memory was 45.6MB in the beginning and 6.9GB in the end (delta: -6.8GB). Peak memory consumption was 1.2GB. Max. memory is 16.1GB. [2021-08-30 19:11:59,336 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 46.1MB. Free memory was 28.4MB in the beginning and 28.3MB in the end (delta: 43.8kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-30 19:11:59,336 INFO L158 Benchmark]: CACSL2BoogieTranslator took 227.97ms. Allocated memory is still 60.8MB. Free memory was 45.3MB in the beginning and 43.7MB in the end (delta: 1.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-08-30 19:11:59,337 INFO L158 Benchmark]: Boogie Preprocessor took 70.68ms. Allocated memory is still 60.8MB. Free memory was 43.5MB in the beginning and 41.8MB in the end (delta: 1.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-08-30 19:11:59,346 INFO L158 Benchmark]: RCFGBuilder took 284.60ms. Allocated memory is still 60.8MB. Free memory was 41.8MB in the beginning and 30.7MB in the end (delta: 11.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-08-30 19:11:59,347 INFO L158 Benchmark]: TraceAbstraction took 19378.11ms. Allocated memory was 60.8MB in the beginning and 8.1GB in the end (delta: 8.1GB). Free memory was 43.2MB in the beginning and 6.9GB in the end (delta: -6.8GB). Peak memory consumption was 1.2GB. Max. memory is 16.1GB. [2021-08-30 19:11:59,348 INFO L158 Benchmark]: Witness Printer took 75.16ms. Allocated memory is still 8.1GB. Free memory was 6.9GB in the beginning and 6.9GB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-08-30 19:11:59,349 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 46.1MB. Free memory was 28.4MB in the beginning and 28.3MB in the end (delta: 43.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 227.97ms. Allocated memory is still 60.8MB. Free memory was 45.3MB in the beginning and 43.7MB in the end (delta: 1.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Preprocessor took 70.68ms. Allocated memory is still 60.8MB. Free memory was 43.5MB in the beginning and 41.8MB in the end (delta: 1.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 284.60ms. Allocated memory is still 60.8MB. Free memory was 41.8MB in the beginning and 30.7MB in the end (delta: 11.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 19378.11ms. Allocated memory was 60.8MB in the beginning and 8.1GB in the end (delta: 8.1GB). Free memory was 43.2MB in the beginning and 6.9GB in the end (delta: -6.8GB). Peak memory consumption was 1.2GB. Max. memory is 16.1GB. * Witness Printer took 75.16ms. Allocated memory is still 8.1GB. Free memory was 6.9GB in the beginning and 6.9GB in the end (delta: 4.2MB). 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: 191]: 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, 55 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 19319.88ms, OverallIterations: 34, TraceHistogramMax: 1, EmptinessCheckTime: 767.55ms, AutomataDifference: 9296.23ms, DeadEndRemovalTime: 0.00ms, HoareAnnotationTime: 0.00ms, InitialAbstractionConstructionTime: 10.93ms, PartialOrderReductionTime: 0.00ms, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 5093 SdHoareTripleChecker+Valid, 5345.06ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5093 mSDsluCounter, 236 SdHoareTripleChecker+Invalid, 4414.83ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 201 mSDsCounter, 79 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5786 IncrementalHoareTripleChecker+Invalid, 5865 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 79 mSolverCounterUnsat, 103 mSDtfsCounter, 5786 mSolverCounterSat, 60.10ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 235 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1181.72ms Time, 0.00ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=106505occurred in iteration=33, InterpolantAutomatonStates: 135, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.00ms DumpTime, AutomataMinimizationStatistics: 6899.74ms AutomataMinimizationTime, 34 MinimizatonAttempts, 16418 StatesRemovedByMinimization, 32 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 64.34ms SsaConstructionTime, 301.07ms SatisfiabilityAnalysisTime, 1647.98ms InterpolantComputationTime, 954 NumberOfCodeBlocks, 954 NumberOfCodeBlocksAsserted, 34 NumberOfCheckSat, 920 ConstructedInterpolants, 0 QuantifiedInterpolants, 2864 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 34 InterpolantComputations, 34 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 19:11:59,386 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...