./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ntdrivers-simplified/kbfiltr_simpl2.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72434f5-1114-414f-9158-5c913d9747da/bin/uautomizer-GMMbpWq8iD/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72434f5-1114-414f-9158-5c913d9747da/bin/uautomizer-GMMbpWq8iD/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72434f5-1114-414f-9158-5c913d9747da/bin/uautomizer-GMMbpWq8iD/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72434f5-1114-414f-9158-5c913d9747da/bin/uautomizer-GMMbpWq8iD/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ntdrivers-simplified/kbfiltr_simpl2.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72434f5-1114-414f-9158-5c913d9747da/bin/uautomizer-GMMbpWq8iD/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72434f5-1114-414f-9158-5c913d9747da/bin/uautomizer-GMMbpWq8iD --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 bf75d7f1708750397c6bdac14ac08b964b10a95dcecc15b57a02c9969977c6ec ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 22:53:45,687 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 22:53:45,695 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 22:53:45,733 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 22:53:45,733 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 22:53:45,735 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 22:53:45,738 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 22:53:45,741 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 22:53:45,744 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 22:53:45,746 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 22:53:45,747 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 22:53:45,749 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 22:53:45,750 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 22:53:45,752 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 22:53:45,754 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 22:53:45,756 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 22:53:45,758 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 22:53:45,759 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 22:53:45,762 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 22:53:45,766 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 22:53:45,768 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 22:53:45,770 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 22:53:45,773 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 22:53:45,774 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 22:53:45,779 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 22:53:45,780 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 22:53:45,780 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 22:53:45,782 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 22:53:45,783 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 22:53:45,785 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 22:53:45,785 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 22:53:45,787 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 22:53:45,788 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 22:53:45,789 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 22:53:45,791 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 22:53:45,792 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 22:53:45,793 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 22:53:45,793 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 22:53:45,794 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 22:53:45,796 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 22:53:45,797 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 22:53:45,798 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72434f5-1114-414f-9158-5c913d9747da/bin/uautomizer-GMMbpWq8iD/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-10-28 22:53:45,848 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 22:53:45,848 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 22:53:45,849 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 22:53:45,849 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 22:53:45,850 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 22:53:45,850 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 22:53:45,851 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 22:53:45,854 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 22:53:45,856 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 22:53:45,856 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-28 22:53:45,857 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 22:53:45,858 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 22:53:45,858 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 22:53:45,858 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-28 22:53:45,859 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-28 22:53:45,859 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-28 22:53:45,859 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 22:53:45,859 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-28 22:53:45,860 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 22:53:45,860 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 22:53:45,860 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 22:53:45,860 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 22:53:45,861 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 22:53:45,861 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 22:53:45,862 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 22:53:45,862 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 22:53:45,862 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 22:53:45,863 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 22:53:45,871 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 22:53:45,871 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72434f5-1114-414f-9158-5c913d9747da/bin/uautomizer-GMMbpWq8iD/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72434f5-1114-414f-9158-5c913d9747da/bin/uautomizer-GMMbpWq8iD Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bf75d7f1708750397c6bdac14ac08b964b10a95dcecc15b57a02c9969977c6ec [2021-10-28 22:53:46,188 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 22:53:46,217 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 22:53:46,220 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 22:53:46,221 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 22:53:46,222 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 22:53:46,223 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72434f5-1114-414f-9158-5c913d9747da/bin/uautomizer-GMMbpWq8iD/../../sv-benchmarks/c/ntdrivers-simplified/kbfiltr_simpl2.cil-1.c [2021-10-28 22:53:46,289 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72434f5-1114-414f-9158-5c913d9747da/bin/uautomizer-GMMbpWq8iD/data/a60a49edf/fa29fba0ec85458da1a6e844c58b9e11/FLAGdb8b5842c [2021-10-28 22:53:46,878 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 22:53:46,879 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72434f5-1114-414f-9158-5c913d9747da/sv-benchmarks/c/ntdrivers-simplified/kbfiltr_simpl2.cil-1.c [2021-10-28 22:53:46,891 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72434f5-1114-414f-9158-5c913d9747da/bin/uautomizer-GMMbpWq8iD/data/a60a49edf/fa29fba0ec85458da1a6e844c58b9e11/FLAGdb8b5842c [2021-10-28 22:53:47,118 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72434f5-1114-414f-9158-5c913d9747da/bin/uautomizer-GMMbpWq8iD/data/a60a49edf/fa29fba0ec85458da1a6e844c58b9e11 [2021-10-28 22:53:47,121 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 22:53:47,122 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-28 22:53:47,124 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 22:53:47,124 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 22:53:47,135 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 22:53:47,137 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 10:53:47" (1/1) ... [2021-10-28 22:53:47,139 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1cb93d25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:53:47, skipping insertion in model container [2021-10-28 22:53:47,139 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 10:53:47" (1/1) ... [2021-10-28 22:53:47,148 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 22:53:47,208 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 22:53:47,537 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72434f5-1114-414f-9158-5c913d9747da/sv-benchmarks/c/ntdrivers-simplified/kbfiltr_simpl2.cil-1.c[29620,29633] [2021-10-28 22:53:47,540 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 22:53:47,552 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 22:53:47,631 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72434f5-1114-414f-9158-5c913d9747da/sv-benchmarks/c/ntdrivers-simplified/kbfiltr_simpl2.cil-1.c[29620,29633] [2021-10-28 22:53:47,632 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 22:53:47,649 INFO L208 MainTranslator]: Completed translation [2021-10-28 22:53:47,650 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:53:47 WrapperNode [2021-10-28 22:53:47,650 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 22:53:47,652 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 22:53:47,652 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 22:53:47,652 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 22:53:47,666 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:53:47" (1/1) ... [2021-10-28 22:53:47,667 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:53:47" (1/1) ... [2021-10-28 22:53:47,693 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:53:47" (1/1) ... [2021-10-28 22:53:47,707 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:53:47" (1/1) ... [2021-10-28 22:53:47,731 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:53:47" (1/1) ... [2021-10-28 22:53:47,744 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:53:47" (1/1) ... [2021-10-28 22:53:47,748 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:53:47" (1/1) ... [2021-10-28 22:53:47,755 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 22:53:47,757 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 22:53:47,757 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 22:53:47,757 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 22:53:47,760 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:53:47" (1/1) ... [2021-10-28 22:53:47,787 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 22:53:47,799 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72434f5-1114-414f-9158-5c913d9747da/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:53:47,812 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72434f5-1114-414f-9158-5c913d9747da/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 22:53:47,829 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72434f5-1114-414f-9158-5c913d9747da/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 22:53:47,871 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-10-28 22:53:47,871 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 22:53:47,871 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-10-28 22:53:47,873 INFO L138 BoogieDeclarations]: Found implementation of procedure stub_driver_init [2021-10-28 22:53:47,873 INFO L138 BoogieDeclarations]: Found implementation of procedure _BLAST_init [2021-10-28 22:53:47,875 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_PnP [2021-10-28 22:53:47,875 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-10-28 22:53:47,875 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2021-10-28 22:53:47,876 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2021-10-28 22:53:47,877 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2021-10-28 22:53:47,877 INFO L138 BoogieDeclarations]: Found implementation of procedure KeSetEvent [2021-10-28 22:53:47,877 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2021-10-28 22:53:47,877 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_Complete [2021-10-28 22:53:47,878 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_CreateClose [2021-10-28 22:53:47,879 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_DispatchPassThrough [2021-10-28 22:53:47,879 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_Power [2021-10-28 22:53:47,879 INFO L138 BoogieDeclarations]: Found implementation of procedure PoCallDriver [2021-10-28 22:53:47,879 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_InternIoCtl [2021-10-28 22:53:47,885 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2021-10-28 22:53:47,885 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-10-28 22:53:47,886 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-10-28 22:53:47,886 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-10-28 22:53:47,886 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 22:53:47,886 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2021-10-28 22:53:47,887 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-10-28 22:53:47,887 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2021-10-28 22:53:47,887 INFO L130 BoogieDeclarations]: Found specification of procedure PoCallDriver [2021-10-28 22:53:47,887 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_PnP [2021-10-28 22:53:47,887 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2021-10-28 22:53:47,888 INFO L130 BoogieDeclarations]: Found specification of procedure KeSetEvent [2021-10-28 22:53:47,888 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2021-10-28 22:53:47,889 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_Complete [2021-10-28 22:53:47,889 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_CreateClose [2021-10-28 22:53:47,889 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_DispatchPassThrough [2021-10-28 22:53:47,889 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_Power [2021-10-28 22:53:47,889 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_InternIoCtl [2021-10-28 22:53:47,890 INFO L130 BoogieDeclarations]: Found specification of procedure stub_driver_init [2021-10-28 22:53:47,890 INFO L130 BoogieDeclarations]: Found specification of procedure _BLAST_init [2021-10-28 22:53:47,890 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2021-10-28 22:53:47,890 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2021-10-28 22:53:47,891 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-10-28 22:53:47,891 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2021-10-28 22:53:47,891 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-10-28 22:53:47,891 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 22:53:47,891 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 22:53:47,892 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-28 22:53:47,892 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-28 22:53:47,893 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-28 22:53:48,235 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-28 22:53:48,436 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##18: assume false; [2021-10-28 22:53:48,436 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##19: assume !false; [2021-10-28 22:53:48,442 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-28 22:53:48,504 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2021-10-28 22:53:48,504 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2021-10-28 22:53:48,615 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-28 22:53:48,653 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2021-10-28 22:53:48,653 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2021-10-28 22:53:48,663 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-28 22:53:48,756 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##43: assume false; [2021-10-28 22:53:48,756 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##44: assume !false; [2021-10-28 22:53:48,761 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-28 22:53:48,781 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume !false; [2021-10-28 22:53:48,781 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume false; [2021-10-28 22:53:48,785 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-28 22:53:48,821 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2021-10-28 22:53:48,822 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2021-10-28 22:53:48,894 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 22:53:48,894 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-10-28 22:53:48,898 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 10:53:48 BoogieIcfgContainer [2021-10-28 22:53:48,899 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 22:53:48,903 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 22:53:48,903 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 22:53:48,907 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 22:53:48,908 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 10:53:47" (1/3) ... [2021-10-28 22:53:48,909 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28d237ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 10:53:48, skipping insertion in model container [2021-10-28 22:53:48,909 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:53:47" (2/3) ... [2021-10-28 22:53:48,910 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28d237ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 10:53:48, skipping insertion in model container [2021-10-28 22:53:48,910 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 10:53:48" (3/3) ... [2021-10-28 22:53:48,914 INFO L111 eAbstractionObserver]: Analyzing ICFG kbfiltr_simpl2.cil-1.c [2021-10-28 22:53:48,922 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 22:53:48,922 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-10-28 22:53:49,000 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 22:53:49,012 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-28 22:53:49,012 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-10-28 22:53:49,049 INFO L276 IsEmpty]: Start isEmpty. Operand has 240 states, 182 states have (on average 1.565934065934066) internal successors, (285), 200 states have internal predecessors, (285), 38 states have call successors, (38), 17 states have call predecessors, (38), 17 states have return successors, (38), 37 states have call predecessors, (38), 38 states have call successors, (38) [2021-10-28 22:53:49,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-28 22:53:49,058 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:53:49,059 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:53:49,060 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ENSURES_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-28 22:53:49,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:53:49,066 INFO L85 PathProgramCache]: Analyzing trace with hash 1842564240, now seen corresponding path program 1 times [2021-10-28 22:53:49,075 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:53:49,075 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597749999] [2021-10-28 22:53:49,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:53:49,077 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:53:49,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:53:49,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 22:53:49,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:53:49,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-28 22:53:49,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:53:49,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:53:49,473 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:53:49,473 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597749999] [2021-10-28 22:53:49,474 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597749999] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 22:53:49,474 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 22:53:49,474 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 22:53:49,476 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658054776] [2021-10-28 22:53:49,481 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 22:53:49,481 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:53:49,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 22:53:49,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-28 22:53:49,498 INFO L87 Difference]: Start difference. First operand has 240 states, 182 states have (on average 1.565934065934066) internal successors, (285), 200 states have internal predecessors, (285), 38 states have call successors, (38), 17 states have call predecessors, (38), 17 states have return successors, (38), 37 states have call predecessors, (38), 38 states have call successors, (38) Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-28 22:53:50,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:53:50,165 INFO L93 Difference]: Finished difference Result 265 states and 384 transitions. [2021-10-28 22:53:50,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 22:53:50,167 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 15 [2021-10-28 22:53:50,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:53:50,189 INFO L225 Difference]: With dead ends: 265 [2021-10-28 22:53:50,190 INFO L226 Difference]: Without dead ends: 256 [2021-10-28 22:53:50,191 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-28 22:53:50,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2021-10-28 22:53:50,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 228. [2021-10-28 22:53:50,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 174 states have (on average 1.5) internal successors, (261), 189 states have internal predecessors, (261), 38 states have call successors, (38), 17 states have call predecessors, (38), 15 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2021-10-28 22:53:50,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 323 transitions. [2021-10-28 22:53:50,283 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 323 transitions. Word has length 15 [2021-10-28 22:53:50,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:53:50,283 INFO L470 AbstractCegarLoop]: Abstraction has 228 states and 323 transitions. [2021-10-28 22:53:50,283 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-28 22:53:50,284 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 323 transitions. [2021-10-28 22:53:50,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-28 22:53:50,285 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:53:50,285 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:53:50,285 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-28 22:53:50,286 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-28 22:53:50,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:53:50,287 INFO L85 PathProgramCache]: Analyzing trace with hash -2103448868, now seen corresponding path program 1 times [2021-10-28 22:53:50,287 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:53:50,287 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102866398] [2021-10-28 22:53:50,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:53:50,288 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:53:50,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:53:50,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 22:53:50,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:53:50,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-28 22:53:50,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:53:50,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:53:50,588 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:53:50,588 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102866398] [2021-10-28 22:53:50,590 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102866398] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 22:53:50,590 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 22:53:50,590 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-28 22:53:50,591 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698805424] [2021-10-28 22:53:50,592 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 22:53:50,593 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:53:50,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 22:53:50,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-28 22:53:50,594 INFO L87 Difference]: Start difference. First operand 228 states and 323 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 3 states have internal predecessors, (14), 3 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-28 22:53:51,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:53:51,307 INFO L93 Difference]: Finished difference Result 256 states and 363 transitions. [2021-10-28 22:53:51,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 22:53:51,308 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 3 states have internal predecessors, (14), 3 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 20 [2021-10-28 22:53:51,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:53:51,310 INFO L225 Difference]: With dead ends: 256 [2021-10-28 22:53:51,311 INFO L226 Difference]: Without dead ends: 256 [2021-10-28 22:53:51,312 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-28 22:53:51,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2021-10-28 22:53:51,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 228. [2021-10-28 22:53:51,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 174 states have (on average 1.4942528735632183) internal successors, (260), 189 states have internal predecessors, (260), 38 states have call successors, (38), 17 states have call predecessors, (38), 15 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2021-10-28 22:53:51,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 322 transitions. [2021-10-28 22:53:51,346 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 322 transitions. Word has length 20 [2021-10-28 22:53:51,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:53:51,347 INFO L470 AbstractCegarLoop]: Abstraction has 228 states and 322 transitions. [2021-10-28 22:53:51,347 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 3 states have internal predecessors, (14), 3 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-28 22:53:51,348 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 322 transitions. [2021-10-28 22:53:51,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-28 22:53:51,350 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:53:51,350 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] [2021-10-28 22:53:51,350 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-28 22:53:51,350 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-28 22:53:51,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:53:51,351 INFO L85 PathProgramCache]: Analyzing trace with hash 275687575, now seen corresponding path program 1 times [2021-10-28 22:53:51,352 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:53:51,353 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119849048] [2021-10-28 22:53:51,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:53:51,355 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:53:51,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:53:51,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 22:53:51,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:53:51,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-28 22:53:51,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:53:51,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-28 22:53:51,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:53:51,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:53:51,643 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:53:51,644 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119849048] [2021-10-28 22:53:51,644 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119849048] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 22:53:51,644 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 22:53:51,644 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-28 22:53:51,645 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939553784] [2021-10-28 22:53:51,645 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 22:53:51,645 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:53:51,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 22:53:51,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-28 22:53:51,646 INFO L87 Difference]: Start difference. First operand 228 states and 322 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 3 states have internal predecessors, (18), 3 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-10-28 22:53:52,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:53:52,646 INFO L93 Difference]: Finished difference Result 344 states and 470 transitions. [2021-10-28 22:53:52,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 22:53:52,647 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 3 states have internal predecessors, (18), 3 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 28 [2021-10-28 22:53:52,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:53:52,651 INFO L225 Difference]: With dead ends: 344 [2021-10-28 22:53:52,651 INFO L226 Difference]: Without dead ends: 343 [2021-10-28 22:53:52,651 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-10-28 22:53:52,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2021-10-28 22:53:52,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 301. [2021-10-28 22:53:52,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 237 states have (on average 1.3924050632911393) internal successors, (330), 240 states have internal predecessors, (330), 37 states have call successors, (37), 23 states have call predecessors, (37), 26 states have return successors, (44), 40 states have call predecessors, (44), 29 states have call successors, (44) [2021-10-28 22:53:52,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 411 transitions. [2021-10-28 22:53:52,667 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 411 transitions. Word has length 28 [2021-10-28 22:53:52,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:53:52,668 INFO L470 AbstractCegarLoop]: Abstraction has 301 states and 411 transitions. [2021-10-28 22:53:52,668 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 3 states have internal predecessors, (18), 3 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-10-28 22:53:52,668 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 411 transitions. [2021-10-28 22:53:52,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-28 22:53:52,670 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:53:52,670 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] [2021-10-28 22:53:52,670 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-28 22:53:52,671 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-28 22:53:52,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:53:52,671 INFO L85 PathProgramCache]: Analyzing trace with hash -306664554, now seen corresponding path program 1 times [2021-10-28 22:53:52,671 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:53:52,672 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682173990] [2021-10-28 22:53:52,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:53:52,672 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:53:52,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:53:52,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 22:53:52,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:53:52,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-28 22:53:52,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:53:52,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-28 22:53:52,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:53:52,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:53:52,862 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:53:52,863 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682173990] [2021-10-28 22:53:52,863 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682173990] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 22:53:52,863 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 22:53:52,863 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-28 22:53:52,864 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230826655] [2021-10-28 22:53:52,864 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 22:53:52,865 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:53:52,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 22:53:52,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-28 22:53:52,866 INFO L87 Difference]: Start difference. First operand 301 states and 411 transitions. Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 3 states have internal predecessors, (19), 3 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-10-28 22:53:53,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:53:53,484 INFO L93 Difference]: Finished difference Result 362 states and 486 transitions. [2021-10-28 22:53:53,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 22:53:53,485 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 3 states have internal predecessors, (19), 3 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 28 [2021-10-28 22:53:53,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:53:53,488 INFO L225 Difference]: With dead ends: 362 [2021-10-28 22:53:53,488 INFO L226 Difference]: Without dead ends: 362 [2021-10-28 22:53:53,489 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-10-28 22:53:53,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2021-10-28 22:53:53,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 341. [2021-10-28 22:53:53,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 278 states have (on average 1.3848920863309353) internal successors, (385), 279 states have internal predecessors, (385), 33 states have call successors, (33), 23 states have call predecessors, (33), 29 states have return successors, (44), 39 states have call predecessors, (44), 27 states have call successors, (44) [2021-10-28 22:53:53,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 462 transitions. [2021-10-28 22:53:53,508 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 462 transitions. Word has length 28 [2021-10-28 22:53:53,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:53:53,516 INFO L470 AbstractCegarLoop]: Abstraction has 341 states and 462 transitions. [2021-10-28 22:53:53,516 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 3 states have internal predecessors, (19), 3 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-10-28 22:53:53,517 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 462 transitions. [2021-10-28 22:53:53,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-28 22:53:53,521 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:53:53,521 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, 1, 1, 1, 1] [2021-10-28 22:53:53,521 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-28 22:53:53,522 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-28 22:53:53,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:53:53,523 INFO L85 PathProgramCache]: Analyzing trace with hash -1014580693, now seen corresponding path program 1 times [2021-10-28 22:53:53,523 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:53:53,524 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400439411] [2021-10-28 22:53:53,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:53:53,525 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:53:53,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:53:53,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 22:53:53,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:53:53,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-28 22:53:53,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:53:53,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-28 22:53:53,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:53:53,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:53:53,751 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:53:53,751 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400439411] [2021-10-28 22:53:53,752 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400439411] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 22:53:53,752 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 22:53:53,752 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-28 22:53:53,752 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59995451] [2021-10-28 22:53:53,753 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 22:53:53,753 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:53:53,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 22:53:53,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-28 22:53:53,755 INFO L87 Difference]: Start difference. First operand 341 states and 462 transitions. Second operand has 6 states, 6 states have (on average 4.5) internal successors, (27), 3 states have internal predecessors, (27), 3 states have call successors, (8), 6 states have call predecessors, (8), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-10-28 22:53:54,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:53:54,435 INFO L93 Difference]: Finished difference Result 340 states and 459 transitions. [2021-10-28 22:53:54,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 22:53:54,435 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 3 states have internal predecessors, (27), 3 states have call successors, (8), 6 states have call predecessors, (8), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 38 [2021-10-28 22:53:54,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:53:54,438 INFO L225 Difference]: With dead ends: 340 [2021-10-28 22:53:54,438 INFO L226 Difference]: Without dead ends: 340 [2021-10-28 22:53:54,439 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-10-28 22:53:54,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2021-10-28 22:53:54,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 340. [2021-10-28 22:53:54,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 340 states, 278 states have (on average 1.3776978417266188) internal successors, (383), 278 states have internal predecessors, (383), 32 states have call successors, (32), 23 states have call predecessors, (32), 29 states have return successors, (44), 39 states have call predecessors, (44), 27 states have call successors, (44) [2021-10-28 22:53:54,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 459 transitions. [2021-10-28 22:53:54,453 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 459 transitions. Word has length 38 [2021-10-28 22:53:54,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:53:54,454 INFO L470 AbstractCegarLoop]: Abstraction has 340 states and 459 transitions. [2021-10-28 22:53:54,454 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 3 states have internal predecessors, (27), 3 states have call successors, (8), 6 states have call predecessors, (8), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-10-28 22:53:54,454 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 459 transitions. [2021-10-28 22:53:54,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-10-28 22:53:54,457 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:53:54,457 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:53:54,458 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-28 22:53:54,458 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-28 22:53:54,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:53:54,458 INFO L85 PathProgramCache]: Analyzing trace with hash -366955023, now seen corresponding path program 1 times [2021-10-28 22:53:54,459 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:53:54,459 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864234875] [2021-10-28 22:53:54,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:53:54,459 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:53:54,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:53:54,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 22:53:54,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:53:54,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-28 22:53:54,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:53:54,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-28 22:53:54,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:53:54,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-10-28 22:53:54,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:53:54,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:53:54,659 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:53:54,660 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864234875] [2021-10-28 22:53:54,660 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864234875] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 22:53:54,660 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 22:53:54,660 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-28 22:53:54,660 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395477033] [2021-10-28 22:53:54,661 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 22:53:54,661 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:53:54,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 22:53:54,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-28 22:53:54,662 INFO L87 Difference]: Start difference. First operand 340 states and 459 transitions. Second operand has 8 states, 8 states have (on average 4.25) internal successors, (34), 4 states have internal predecessors, (34), 3 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-10-28 22:53:55,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:53:55,873 INFO L93 Difference]: Finished difference Result 319 states and 423 transitions. [2021-10-28 22:53:55,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 22:53:55,874 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.25) internal successors, (34), 4 states have internal predecessors, (34), 3 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 46 [2021-10-28 22:53:55,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:53:55,876 INFO L225 Difference]: With dead ends: 319 [2021-10-28 22:53:55,877 INFO L226 Difference]: Without dead ends: 319 [2021-10-28 22:53:55,877 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2021-10-28 22:53:55,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2021-10-28 22:53:55,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 301. [2021-10-28 22:53:55,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 244 states have (on average 1.3688524590163935) internal successors, (334), 244 states have internal predecessors, (334), 29 states have call successors, (29), 21 states have call predecessors, (29), 27 states have return successors, (39), 36 states have call predecessors, (39), 24 states have call successors, (39) [2021-10-28 22:53:55,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 402 transitions. [2021-10-28 22:53:55,889 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 402 transitions. Word has length 46 [2021-10-28 22:53:55,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:53:55,889 INFO L470 AbstractCegarLoop]: Abstraction has 301 states and 402 transitions. [2021-10-28 22:53:55,890 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.25) internal successors, (34), 4 states have internal predecessors, (34), 3 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-10-28 22:53:55,890 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 402 transitions. [2021-10-28 22:53:55,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-10-28 22:53:55,892 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:53:55,892 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:53:55,892 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-28 22:53:55,893 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-28 22:53:55,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:53:55,893 INFO L85 PathProgramCache]: Analyzing trace with hash 992673928, now seen corresponding path program 1 times [2021-10-28 22:53:55,893 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:53:55,894 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407129547] [2021-10-28 22:53:55,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:53:55,894 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:53:55,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:53:56,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 22:53:56,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:53:56,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-28 22:53:56,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:53:56,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-28 22:53:56,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:53:56,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-10-28 22:53:56,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:53:56,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-10-28 22:53:56,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:53:56,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:53:56,221 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:53:56,222 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407129547] [2021-10-28 22:53:56,223 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407129547] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 22:53:56,224 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 22:53:56,224 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-10-28 22:53:56,225 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277769987] [2021-10-28 22:53:56,226 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-28 22:53:56,226 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:53:56,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-28 22:53:56,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-10-28 22:53:56,228 INFO L87 Difference]: Start difference. First operand 301 states and 402 transitions. Second operand has 12 states, 12 states have (on average 2.75) internal successors, (33), 7 states have internal predecessors, (33), 3 states have call successors, (7), 7 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2021-10-28 22:53:57,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:53:57,489 INFO L93 Difference]: Finished difference Result 322 states and 425 transitions. [2021-10-28 22:53:57,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-28 22:53:57,490 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.75) internal successors, (33), 7 states have internal predecessors, (33), 3 states have call successors, (7), 7 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) Word has length 45 [2021-10-28 22:53:57,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:53:57,492 INFO L225 Difference]: With dead ends: 322 [2021-10-28 22:53:57,492 INFO L226 Difference]: Without dead ends: 322 [2021-10-28 22:53:57,493 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=98, Invalid=244, Unknown=0, NotChecked=0, Total=342 [2021-10-28 22:53:57,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2021-10-28 22:53:57,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 315. [2021-10-28 22:53:57,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 256 states have (on average 1.359375) internal successors, (348), 255 states have internal predecessors, (348), 29 states have call successors, (29), 21 states have call predecessors, (29), 29 states have return successors, (41), 38 states have call predecessors, (41), 24 states have call successors, (41) [2021-10-28 22:53:57,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 418 transitions. [2021-10-28 22:53:57,513 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 418 transitions. Word has length 45 [2021-10-28 22:53:57,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:53:57,513 INFO L470 AbstractCegarLoop]: Abstraction has 315 states and 418 transitions. [2021-10-28 22:53:57,514 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.75) internal successors, (33), 7 states have internal predecessors, (33), 3 states have call successors, (7), 7 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2021-10-28 22:53:57,514 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 418 transitions. [2021-10-28 22:53:57,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-10-28 22:53:57,515 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:53:57,516 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:53:57,516 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-28 22:53:57,516 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-28 22:53:57,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:53:57,517 INFO L85 PathProgramCache]: Analyzing trace with hash 328810937, now seen corresponding path program 1 times [2021-10-28 22:53:57,517 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:53:57,517 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802323171] [2021-10-28 22:53:57,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:53:57,517 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:53:57,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:53:57,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 22:53:57,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:53:57,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-28 22:53:57,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:53:57,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-28 22:53:57,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:53:57,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-10-28 22:53:57,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:53:57,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-10-28 22:53:57,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:53:57,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:53:57,865 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:53:57,866 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802323171] [2021-10-28 22:53:57,866 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802323171] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 22:53:57,866 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 22:53:57,866 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-10-28 22:53:57,866 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406845759] [2021-10-28 22:53:57,868 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-28 22:53:57,868 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:53:57,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-28 22:53:57,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-10-28 22:53:57,869 INFO L87 Difference]: Start difference. First operand 315 states and 418 transitions. Second operand has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 7 states have internal predecessors, (34), 3 states have call successors, (7), 7 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2021-10-28 22:53:58,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:53:58,970 INFO L93 Difference]: Finished difference Result 322 states and 424 transitions. [2021-10-28 22:53:58,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-28 22:53:58,971 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 7 states have internal predecessors, (34), 3 states have call successors, (7), 7 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) Word has length 46 [2021-10-28 22:53:58,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:53:58,974 INFO L225 Difference]: With dead ends: 322 [2021-10-28 22:53:58,974 INFO L226 Difference]: Without dead ends: 322 [2021-10-28 22:53:58,974 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=98, Invalid=244, Unknown=0, NotChecked=0, Total=342 [2021-10-28 22:53:58,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2021-10-28 22:53:58,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 316. [2021-10-28 22:53:58,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 316 states, 257 states have (on average 1.3579766536964981) internal successors, (349), 256 states have internal predecessors, (349), 29 states have call successors, (29), 21 states have call predecessors, (29), 29 states have return successors, (41), 38 states have call predecessors, (41), 24 states have call successors, (41) [2021-10-28 22:53:58,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 419 transitions. [2021-10-28 22:53:58,990 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 419 transitions. Word has length 46 [2021-10-28 22:53:58,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:53:58,990 INFO L470 AbstractCegarLoop]: Abstraction has 316 states and 419 transitions. [2021-10-28 22:53:58,991 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 7 states have internal predecessors, (34), 3 states have call successors, (7), 7 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2021-10-28 22:53:58,991 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 419 transitions. [2021-10-28 22:53:58,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-10-28 22:53:58,992 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:53:58,993 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:53:58,993 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-28 22:53:58,993 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-28 22:53:58,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:53:58,994 INFO L85 PathProgramCache]: Analyzing trace with hash 1391975518, now seen corresponding path program 1 times [2021-10-28 22:53:58,994 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:53:58,994 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202451865] [2021-10-28 22:53:58,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:53:58,995 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:53:59,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:53:59,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 22:53:59,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:53:59,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-28 22:53:59,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:53:59,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-28 22:53:59,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:53:59,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-10-28 22:53:59,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:53:59,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-10-28 22:53:59,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:53:59,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:53:59,180 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:53:59,181 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202451865] [2021-10-28 22:53:59,181 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202451865] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 22:53:59,181 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 22:53:59,181 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-28 22:53:59,181 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269206611] [2021-10-28 22:53:59,182 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 22:53:59,182 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:53:59,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 22:53:59,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-10-28 22:53:59,183 INFO L87 Difference]: Start difference. First operand 316 states and 419 transitions. Second operand has 8 states, 8 states have (on average 4.375) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (7), 7 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2021-10-28 22:53:59,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:53:59,834 INFO L93 Difference]: Finished difference Result 310 states and 408 transitions. [2021-10-28 22:53:59,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 22:53:59,834 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.375) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (7), 7 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 47 [2021-10-28 22:53:59,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:53:59,836 INFO L225 Difference]: With dead ends: 310 [2021-10-28 22:53:59,836 INFO L226 Difference]: Without dead ends: 102 [2021-10-28 22:53:59,836 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2021-10-28 22:53:59,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2021-10-28 22:53:59,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2021-10-28 22:53:59,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 77 states have (on average 1.2207792207792207) internal successors, (94), 79 states have internal predecessors, (94), 15 states have call successors, (15), 13 states have call predecessors, (15), 9 states have return successors, (9), 9 states have call predecessors, (9), 8 states have call successors, (9) [2021-10-28 22:53:59,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 118 transitions. [2021-10-28 22:53:59,841 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 118 transitions. Word has length 47 [2021-10-28 22:53:59,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:53:59,841 INFO L470 AbstractCegarLoop]: Abstraction has 102 states and 118 transitions. [2021-10-28 22:53:59,842 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.375) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (7), 7 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2021-10-28 22:53:59,842 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 118 transitions. [2021-10-28 22:53:59,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-10-28 22:53:59,843 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:53:59,843 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:53:59,843 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-28 22:53:59,844 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-28 22:53:59,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:53:59,844 INFO L85 PathProgramCache]: Analyzing trace with hash -1240570869, now seen corresponding path program 1 times [2021-10-28 22:53:59,844 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:53:59,845 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369553824] [2021-10-28 22:53:59,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:53:59,845 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:53:59,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:53:59,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 22:53:59,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:53:59,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-28 22:53:59,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:53:59,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-28 22:53:59,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:54:00,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-10-28 22:54:00,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:54:00,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-10-28 22:54:00,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:54:00,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-10-28 22:54:00,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:54:00,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:54:00,025 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:54:00,026 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369553824] [2021-10-28 22:54:00,026 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369553824] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 22:54:00,026 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 22:54:00,026 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-28 22:54:00,026 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833914192] [2021-10-28 22:54:00,027 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 22:54:00,027 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:54:00,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 22:54:00,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-28 22:54:00,028 INFO L87 Difference]: Start difference. First operand 102 states and 118 transitions. Second operand has 8 states, 8 states have (on average 4.625) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (10), 7 states have call predecessors, (10), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2021-10-28 22:54:00,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:54:00,318 INFO L93 Difference]: Finished difference Result 100 states and 114 transitions. [2021-10-28 22:54:00,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 22:54:00,319 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (10), 7 states have call predecessors, (10), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 53 [2021-10-28 22:54:00,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:54:00,320 INFO L225 Difference]: With dead ends: 100 [2021-10-28 22:54:00,320 INFO L226 Difference]: Without dead ends: 100 [2021-10-28 22:54:00,321 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2021-10-28 22:54:00,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2021-10-28 22:54:00,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2021-10-28 22:54:00,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 76 states have (on average 1.1973684210526316) internal successors, (91), 77 states have internal predecessors, (91), 14 states have call successors, (14), 13 states have call predecessors, (14), 9 states have return successors, (9), 9 states have call predecessors, (9), 8 states have call successors, (9) [2021-10-28 22:54:00,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 114 transitions. [2021-10-28 22:54:00,326 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 114 transitions. Word has length 53 [2021-10-28 22:54:00,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:54:00,329 INFO L470 AbstractCegarLoop]: Abstraction has 100 states and 114 transitions. [2021-10-28 22:54:00,329 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (10), 7 states have call predecessors, (10), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2021-10-28 22:54:00,329 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 114 transitions. [2021-10-28 22:54:00,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-10-28 22:54:00,331 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:54:00,332 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:54:00,332 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-28 22:54:00,334 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-28 22:54:00,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:54:00,335 INFO L85 PathProgramCache]: Analyzing trace with hash 508196442, now seen corresponding path program 1 times [2021-10-28 22:54:00,335 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:54:00,342 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041764813] [2021-10-28 22:54:00,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:54:00,342 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:54:00,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:54:00,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 22:54:00,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:54:00,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-28 22:54:00,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:54:00,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-28 22:54:00,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:54:00,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-10-28 22:54:00,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:54:00,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-10-28 22:54:00,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:54:00,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-10-28 22:54:00,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:54:00,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:54:00,644 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:54:00,644 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041764813] [2021-10-28 22:54:00,644 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041764813] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 22:54:00,645 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 22:54:00,645 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-10-28 22:54:00,645 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482776562] [2021-10-28 22:54:00,645 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-28 22:54:00,646 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:54:00,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-28 22:54:00,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-10-28 22:54:00,647 INFO L87 Difference]: Start difference. First operand 100 states and 114 transitions. Second operand has 12 states, 12 states have (on average 3.4166666666666665) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (10), 7 states have call predecessors, (10), 3 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) [2021-10-28 22:54:00,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:54:00,854 INFO L93 Difference]: Finished difference Result 93 states and 104 transitions. [2021-10-28 22:54:00,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 22:54:00,855 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.4166666666666665) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (10), 7 states have call predecessors, (10), 3 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) Word has length 57 [2021-10-28 22:54:00,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:54:00,856 INFO L225 Difference]: With dead ends: 93 [2021-10-28 22:54:00,856 INFO L226 Difference]: Without dead ends: 93 [2021-10-28 22:54:00,857 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-10-28 22:54:00,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2021-10-28 22:54:00,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2021-10-28 22:54:00,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 69 states have (on average 1.173913043478261) internal successors, (81), 70 states have internal predecessors, (81), 14 states have call successors, (14), 13 states have call predecessors, (14), 9 states have return successors, (9), 9 states have call predecessors, (9), 8 states have call successors, (9) [2021-10-28 22:54:00,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 104 transitions. [2021-10-28 22:54:00,861 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 104 transitions. Word has length 57 [2021-10-28 22:54:00,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:54:00,861 INFO L470 AbstractCegarLoop]: Abstraction has 93 states and 104 transitions. [2021-10-28 22:54:00,861 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.4166666666666665) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (10), 7 states have call predecessors, (10), 3 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) [2021-10-28 22:54:00,861 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 104 transitions. [2021-10-28 22:54:00,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-10-28 22:54:00,863 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:54:00,863 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, 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] [2021-10-28 22:54:00,863 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-28 22:54:00,864 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-28 22:54:00,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:54:00,864 INFO L85 PathProgramCache]: Analyzing trace with hash 1993240723, now seen corresponding path program 1 times [2021-10-28 22:54:00,864 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:54:00,864 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307774723] [2021-10-28 22:54:00,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:54:00,865 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:54:00,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:54:00,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 22:54:00,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:54:01,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-28 22:54:01,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:54:01,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-28 22:54:01,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:54:01,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-10-28 22:54:01,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:54:01,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-10-28 22:54:01,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:54:01,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-10-28 22:54:01,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:54:01,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-10-28 22:54:01,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:54:01,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:54:01,143 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:54:01,144 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307774723] [2021-10-28 22:54:01,144 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307774723] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 22:54:01,144 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 22:54:01,144 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-10-28 22:54:01,145 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935440271] [2021-10-28 22:54:01,146 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-28 22:54:01,147 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:54:01,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-28 22:54:01,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-10-28 22:54:01,148 INFO L87 Difference]: Start difference. First operand 93 states and 104 transitions. Second operand has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 6 states have internal predecessors, (43), 3 states have call successors, (11), 9 states have call predecessors, (11), 4 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) [2021-10-28 22:54:01,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:54:01,563 INFO L93 Difference]: Finished difference Result 93 states and 103 transitions. [2021-10-28 22:54:01,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-28 22:54:01,564 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 6 states have internal predecessors, (43), 3 states have call successors, (11), 9 states have call predecessors, (11), 4 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) Word has length 61 [2021-10-28 22:54:01,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:54:01,564 INFO L225 Difference]: With dead ends: 93 [2021-10-28 22:54:01,564 INFO L226 Difference]: Without dead ends: 93 [2021-10-28 22:54:01,565 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=87, Invalid=255, Unknown=0, NotChecked=0, Total=342 [2021-10-28 22:54:01,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2021-10-28 22:54:01,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2021-10-28 22:54:01,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 69 states have (on average 1.1594202898550725) internal successors, (80), 70 states have internal predecessors, (80), 14 states have call successors, (14), 13 states have call predecessors, (14), 9 states have return successors, (9), 9 states have call predecessors, (9), 8 states have call successors, (9) [2021-10-28 22:54:01,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 103 transitions. [2021-10-28 22:54:01,570 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 103 transitions. Word has length 61 [2021-10-28 22:54:01,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:54:01,570 INFO L470 AbstractCegarLoop]: Abstraction has 93 states and 103 transitions. [2021-10-28 22:54:01,570 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 6 states have internal predecessors, (43), 3 states have call successors, (11), 9 states have call predecessors, (11), 4 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) [2021-10-28 22:54:01,570 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 103 transitions. [2021-10-28 22:54:01,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-10-28 22:54:01,571 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:54:01,572 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, 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] [2021-10-28 22:54:01,572 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-10-28 22:54:01,572 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-28 22:54:01,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:54:01,573 INFO L85 PathProgramCache]: Analyzing trace with hash 726507320, now seen corresponding path program 1 times [2021-10-28 22:54:01,573 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:54:01,573 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065690023] [2021-10-28 22:54:01,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:54:01,573 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:54:01,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:54:01,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 22:54:01,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:54:01,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-28 22:54:01,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:54:01,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-28 22:54:01,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:54:01,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-10-28 22:54:01,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:54:01,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-10-28 22:54:01,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:54:01,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-10-28 22:54:01,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:54:01,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-10-28 22:54:01,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:54:01,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:54:01,782 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:54:01,782 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065690023] [2021-10-28 22:54:01,783 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065690023] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 22:54:01,783 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 22:54:01,783 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-28 22:54:01,783 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028170871] [2021-10-28 22:54:01,784 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-28 22:54:01,784 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:54:01,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-28 22:54:01,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-10-28 22:54:01,785 INFO L87 Difference]: Start difference. First operand 93 states and 103 transitions. Second operand has 9 states, 9 states have (on average 5.0) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (11), 8 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2021-10-28 22:54:01,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:54:01,978 INFO L93 Difference]: Finished difference Result 96 states and 106 transitions. [2021-10-28 22:54:01,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 22:54:01,978 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.0) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (11), 8 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) Word has length 63 [2021-10-28 22:54:01,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:54:01,979 INFO L225 Difference]: With dead ends: 96 [2021-10-28 22:54:01,979 INFO L226 Difference]: Without dead ends: 96 [2021-10-28 22:54:01,979 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-10-28 22:54:01,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2021-10-28 22:54:01,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2021-10-28 22:54:01,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 72 states have (on average 1.1527777777777777) internal successors, (83), 73 states have internal predecessors, (83), 14 states have call successors, (14), 13 states have call predecessors, (14), 9 states have return successors, (9), 9 states have call predecessors, (9), 8 states have call successors, (9) [2021-10-28 22:54:01,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 106 transitions. [2021-10-28 22:54:01,983 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 106 transitions. Word has length 63 [2021-10-28 22:54:01,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:54:01,983 INFO L470 AbstractCegarLoop]: Abstraction has 96 states and 106 transitions. [2021-10-28 22:54:01,984 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.0) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (11), 8 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2021-10-28 22:54:01,984 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 106 transitions. [2021-10-28 22:54:01,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-10-28 22:54:01,985 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:54:01,985 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, 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] [2021-10-28 22:54:01,985 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-10-28 22:54:01,985 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-28 22:54:01,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:54:01,986 INFO L85 PathProgramCache]: Analyzing trace with hash 139701306, now seen corresponding path program 1 times [2021-10-28 22:54:01,986 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:54:01,986 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641451114] [2021-10-28 22:54:01,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:54:01,987 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:54:02,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:54:02,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 22:54:02,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:54:02,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-28 22:54:02,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:54:02,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-28 22:54:02,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:54:02,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-10-28 22:54:02,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:54:02,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-10-28 22:54:02,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:54:02,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-10-28 22:54:02,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:54:02,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-10-28 22:54:02,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:54:02,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:54:02,232 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:54:02,232 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641451114] [2021-10-28 22:54:02,232 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641451114] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 22:54:02,232 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 22:54:02,232 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-10-28 22:54:02,233 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801641314] [2021-10-28 22:54:02,233 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-28 22:54:02,233 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:54:02,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-28 22:54:02,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-10-28 22:54:02,234 INFO L87 Difference]: Start difference. First operand 96 states and 106 transitions. Second operand has 12 states, 12 states have (on average 3.75) internal successors, (45), 5 states have internal predecessors, (45), 2 states have call successors, (11), 8 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2021-10-28 22:54:02,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:54:02,485 INFO L93 Difference]: Finished difference Result 105 states and 116 transitions. [2021-10-28 22:54:02,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-28 22:54:02,486 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.75) internal successors, (45), 5 states have internal predecessors, (45), 2 states have call successors, (11), 8 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) Word has length 63 [2021-10-28 22:54:02,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:54:02,487 INFO L225 Difference]: With dead ends: 105 [2021-10-28 22:54:02,487 INFO L226 Difference]: Without dead ends: 95 [2021-10-28 22:54:02,487 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2021-10-28 22:54:02,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2021-10-28 22:54:02,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 91. [2021-10-28 22:54:02,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 67 states have (on average 1.1343283582089552) internal successors, (76), 68 states have internal predecessors, (76), 14 states have call successors, (14), 13 states have call predecessors, (14), 9 states have return successors, (9), 9 states have call predecessors, (9), 8 states have call successors, (9) [2021-10-28 22:54:02,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 99 transitions. [2021-10-28 22:54:02,491 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 99 transitions. Word has length 63 [2021-10-28 22:54:02,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:54:02,491 INFO L470 AbstractCegarLoop]: Abstraction has 91 states and 99 transitions. [2021-10-28 22:54:02,491 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.75) internal successors, (45), 5 states have internal predecessors, (45), 2 states have call successors, (11), 8 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2021-10-28 22:54:02,492 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 99 transitions. [2021-10-28 22:54:02,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-10-28 22:54:02,492 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:54:02,492 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, 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] [2021-10-28 22:54:02,493 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-10-28 22:54:02,493 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-28 22:54:02,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:54:02,493 INFO L85 PathProgramCache]: Analyzing trace with hash -422329367, now seen corresponding path program 1 times [2021-10-28 22:54:02,493 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:54:02,493 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978428563] [2021-10-28 22:54:02,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:54:02,494 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:54:02,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:54:02,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 22:54:02,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:54:02,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-28 22:54:02,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:54:02,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-28 22:54:02,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:54:02,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-10-28 22:54:02,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:54:02,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-10-28 22:54:02,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:54:02,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-10-28 22:54:02,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:54:02,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-10-28 22:54:02,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:54:02,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:54:02,675 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:54:02,676 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978428563] [2021-10-28 22:54:02,676 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978428563] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 22:54:02,676 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 22:54:02,676 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-28 22:54:02,676 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587567667] [2021-10-28 22:54:02,677 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-28 22:54:02,677 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:54:02,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-28 22:54:02,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-10-28 22:54:02,678 INFO L87 Difference]: Start difference. First operand 91 states and 99 transitions. Second operand has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (11), 8 states have call predecessors, (11), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2021-10-28 22:54:02,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:54:02,871 INFO L93 Difference]: Finished difference Result 104 states and 112 transitions. [2021-10-28 22:54:02,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 22:54:02,872 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (11), 8 states have call predecessors, (11), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 64 [2021-10-28 22:54:02,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:54:02,873 INFO L225 Difference]: With dead ends: 104 [2021-10-28 22:54:02,873 INFO L226 Difference]: Without dead ends: 102 [2021-10-28 22:54:02,873 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-10-28 22:54:02,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2021-10-28 22:54:02,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 93. [2021-10-28 22:54:02,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 69 states have (on average 1.1159420289855073) internal successors, (77), 70 states have internal predecessors, (77), 14 states have call successors, (14), 13 states have call predecessors, (14), 9 states have return successors, (9), 9 states have call predecessors, (9), 8 states have call successors, (9) [2021-10-28 22:54:02,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 100 transitions. [2021-10-28 22:54:02,877 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 100 transitions. Word has length 64 [2021-10-28 22:54:02,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:54:02,878 INFO L470 AbstractCegarLoop]: Abstraction has 93 states and 100 transitions. [2021-10-28 22:54:02,878 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (11), 8 states have call predecessors, (11), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2021-10-28 22:54:02,878 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 100 transitions. [2021-10-28 22:54:02,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-10-28 22:54:02,879 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:54:02,879 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, 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] [2021-10-28 22:54:02,879 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-10-28 22:54:02,880 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-28 22:54:02,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:54:02,880 INFO L85 PathProgramCache]: Analyzing trace with hash 1957822650, now seen corresponding path program 1 times [2021-10-28 22:54:02,880 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:54:02,880 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273271342] [2021-10-28 22:54:02,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:54:02,881 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:54:02,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:54:02,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 22:54:02,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:54:03,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-28 22:54:03,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:54:03,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-28 22:54:03,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:54:03,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-10-28 22:54:03,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:54:03,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-10-28 22:54:03,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:54:03,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-10-28 22:54:03,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:54:03,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-10-28 22:54:03,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:54:03,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:54:03,092 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:54:03,092 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273271342] [2021-10-28 22:54:03,094 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273271342] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 22:54:03,094 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 22:54:03,094 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-10-28 22:54:03,095 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383975305] [2021-10-28 22:54:03,095 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-28 22:54:03,096 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:54:03,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-28 22:54:03,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-10-28 22:54:03,097 INFO L87 Difference]: Start difference. First operand 93 states and 100 transitions. Second operand has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 5 states have internal predecessors, (46), 2 states have call successors, (11), 8 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2021-10-28 22:54:03,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:54:03,339 INFO L93 Difference]: Finished difference Result 93 states and 99 transitions. [2021-10-28 22:54:03,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-28 22:54:03,340 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 5 states have internal predecessors, (46), 2 states have call successors, (11), 8 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) Word has length 64 [2021-10-28 22:54:03,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:54:03,341 INFO L225 Difference]: With dead ends: 93 [2021-10-28 22:54:03,341 INFO L226 Difference]: Without dead ends: 93 [2021-10-28 22:54:03,342 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2021-10-28 22:54:03,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2021-10-28 22:54:03,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2021-10-28 22:54:03,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 69 states have (on average 1.1014492753623188) internal successors, (76), 70 states have internal predecessors, (76), 14 states have call successors, (14), 13 states have call predecessors, (14), 9 states have return successors, (9), 9 states have call predecessors, (9), 8 states have call successors, (9) [2021-10-28 22:54:03,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 99 transitions. [2021-10-28 22:54:03,346 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 99 transitions. Word has length 64 [2021-10-28 22:54:03,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:54:03,347 INFO L470 AbstractCegarLoop]: Abstraction has 93 states and 99 transitions. [2021-10-28 22:54:03,347 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 5 states have internal predecessors, (46), 2 states have call successors, (11), 8 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2021-10-28 22:54:03,347 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 99 transitions. [2021-10-28 22:54:03,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-10-28 22:54:03,348 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:54:03,348 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, 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] [2021-10-28 22:54:03,349 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-10-28 22:54:03,349 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-28 22:54:03,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:54:03,349 INFO L85 PathProgramCache]: Analyzing trace with hash -445098009, now seen corresponding path program 1 times [2021-10-28 22:54:03,350 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:54:03,350 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181059316] [2021-10-28 22:54:03,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:54:03,350 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:54:03,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:54:03,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 22:54:03,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:54:03,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-28 22:54:03,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:54:03,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-28 22:54:03,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:54:03,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-10-28 22:54:03,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:54:03,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-10-28 22:54:03,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:54:03,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-10-28 22:54:03,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:54:03,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-10-28 22:54:03,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:54:03,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:54:03,570 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:54:03,570 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181059316] [2021-10-28 22:54:03,570 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181059316] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 22:54:03,570 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 22:54:03,570 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-28 22:54:03,571 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169012173] [2021-10-28 22:54:03,571 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-28 22:54:03,571 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:54:03,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-28 22:54:03,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-10-28 22:54:03,572 INFO L87 Difference]: Start difference. First operand 93 states and 99 transitions. Second operand has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 3 states have internal predecessors, (47), 3 states have call successors, (11), 9 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-10-28 22:54:03,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:54:03,804 INFO L93 Difference]: Finished difference Result 88 states and 91 transitions. [2021-10-28 22:54:03,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 22:54:03,804 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 3 states have internal predecessors, (47), 3 states have call successors, (11), 9 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 65 [2021-10-28 22:54:03,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:54:03,805 INFO L225 Difference]: With dead ends: 88 [2021-10-28 22:54:03,805 INFO L226 Difference]: Without dead ends: 78 [2021-10-28 22:54:03,806 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2021-10-28 22:54:03,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-10-28 22:54:03,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2021-10-28 22:54:03,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 57 states have (on average 1.0701754385964912) internal successors, (61), 57 states have internal predecessors, (61), 12 states have call successors, (12), 12 states have call predecessors, (12), 8 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-10-28 22:54:03,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 81 transitions. [2021-10-28 22:54:03,809 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 81 transitions. Word has length 65 [2021-10-28 22:54:03,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:54:03,809 INFO L470 AbstractCegarLoop]: Abstraction has 78 states and 81 transitions. [2021-10-28 22:54:03,810 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 3 states have internal predecessors, (47), 3 states have call successors, (11), 9 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-10-28 22:54:03,810 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 81 transitions. [2021-10-28 22:54:03,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-10-28 22:54:03,811 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:54:03,811 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, 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] [2021-10-28 22:54:03,811 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-10-28 22:54:03,811 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-28 22:54:03,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:54:03,812 INFO L85 PathProgramCache]: Analyzing trace with hash 362782196, now seen corresponding path program 1 times [2021-10-28 22:54:03,812 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:54:03,812 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543067879] [2021-10-28 22:54:03,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:54:03,813 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:54:03,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:54:03,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 22:54:03,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:54:03,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-28 22:54:03,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:54:03,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-28 22:54:03,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:54:04,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-10-28 22:54:04,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:54:04,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-10-28 22:54:04,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:54:04,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-10-28 22:54:04,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:54:04,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-10-28 22:54:04,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:54:04,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:54:04,103 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:54:04,103 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543067879] [2021-10-28 22:54:04,104 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543067879] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 22:54:04,104 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 22:54:04,104 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-10-28 22:54:04,104 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853548288] [2021-10-28 22:54:04,105 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-28 22:54:04,106 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:54:04,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-28 22:54:04,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-10-28 22:54:04,107 INFO L87 Difference]: Start difference. First operand 78 states and 81 transitions. Second operand has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (11), 8 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2021-10-28 22:54:04,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:54:04,340 INFO L93 Difference]: Finished difference Result 78 states and 80 transitions. [2021-10-28 22:54:04,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-28 22:54:04,341 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (11), 8 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) Word has length 65 [2021-10-28 22:54:04,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:54:04,342 INFO L225 Difference]: With dead ends: 78 [2021-10-28 22:54:04,342 INFO L226 Difference]: Without dead ends: 78 [2021-10-28 22:54:04,342 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2021-10-28 22:54:04,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-10-28 22:54:04,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2021-10-28 22:54:04,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 57 states have (on average 1.0526315789473684) internal successors, (60), 57 states have internal predecessors, (60), 12 states have call successors, (12), 12 states have call predecessors, (12), 8 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-10-28 22:54:04,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 80 transitions. [2021-10-28 22:54:04,345 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 80 transitions. Word has length 65 [2021-10-28 22:54:04,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:54:04,346 INFO L470 AbstractCegarLoop]: Abstraction has 78 states and 80 transitions. [2021-10-28 22:54:04,346 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (11), 8 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2021-10-28 22:54:04,346 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 80 transitions. [2021-10-28 22:54:04,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-10-28 22:54:04,348 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:54:04,348 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, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:54:04,349 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-10-28 22:54:04,349 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-28 22:54:04,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:54:04,349 INFO L85 PathProgramCache]: Analyzing trace with hash -137527127, now seen corresponding path program 1 times [2021-10-28 22:54:04,349 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:54:04,350 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366490250] [2021-10-28 22:54:04,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:54:04,350 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:54:04,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:54:04,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 22:54:04,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:54:04,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-28 22:54:04,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:54:04,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-28 22:54:04,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:54:04,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-10-28 22:54:04,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:54:04,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-10-28 22:54:04,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:54:04,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-10-28 22:54:04,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:54:04,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-10-28 22:54:04,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:54:04,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-10-28 22:54:04,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:54:04,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:54:04,599 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:54:04,599 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366490250] [2021-10-28 22:54:04,599 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366490250] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 22:54:04,599 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 22:54:04,599 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-28 22:54:04,600 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692546391] [2021-10-28 22:54:04,601 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-28 22:54:04,601 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:54:04,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-28 22:54:04,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-10-28 22:54:04,602 INFO L87 Difference]: Start difference. First operand 78 states and 80 transitions. Second operand has 11 states, 11 states have (on average 5.090909090909091) internal successors, (56), 5 states have internal predecessors, (56), 3 states have call successors, (12), 9 states have call predecessors, (12), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2021-10-28 22:54:04,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:54:04,830 INFO L93 Difference]: Finished difference Result 60 states and 60 transitions. [2021-10-28 22:54:04,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 22:54:04,831 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.090909090909091) internal successors, (56), 5 states have internal predecessors, (56), 3 states have call successors, (12), 9 states have call predecessors, (12), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 76 [2021-10-28 22:54:04,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:54:04,831 INFO L225 Difference]: With dead ends: 60 [2021-10-28 22:54:04,831 INFO L226 Difference]: Without dead ends: 0 [2021-10-28 22:54:04,832 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=98, Unknown=0, NotChecked=0, Total=156 [2021-10-28 22:54:04,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-28 22:54:04,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-28 22:54:04,832 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) [2021-10-28 22:54:04,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-28 22:54:04,833 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 76 [2021-10-28 22:54:04,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:54:04,833 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-28 22:54:04,833 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.090909090909091) internal successors, (56), 5 states have internal predecessors, (56), 3 states have call successors, (12), 9 states have call predecessors, (12), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2021-10-28 22:54:04,834 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-28 22:54:04,834 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-28 22:54:04,836 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr0ENSURES_VIOLATIONMEMORY_LEAK [2021-10-28 22:54:04,837 INFO L764 garLoopResultBuilder]: Registering result SAFE for location errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK [2021-10-28 22:54:04,838 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-10-28 22:54:04,841 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:54:04,842 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 22:54:04,846 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 10:54:04 BoogieIcfgContainer [2021-10-28 22:54:04,846 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 22:54:04,847 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 22:54:04,847 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 22:54:04,847 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 22:54:04,848 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 10:53:48" (3/4) ... [2021-10-28 22:54:04,851 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-28 22:54:04,858 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure reach_error [2021-10-28 22:54:04,858 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure KeSetEvent [2021-10-28 22:54:04,858 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure KbFilter_Complete [2021-10-28 22:54:04,859 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure stub_driver_init [2021-10-28 22:54:04,859 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure KbFilter_Power [2021-10-28 22:54:04,859 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure _BLAST_init [2021-10-28 22:54:04,859 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure errorFn [2021-10-28 22:54:04,859 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2021-10-28 22:54:04,859 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure IofCallDriver [2021-10-28 22:54:04,859 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure stubMoreProcessingRequired [2021-10-28 22:54:04,860 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure PoCallDriver [2021-10-28 22:54:04,860 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2021-10-28 22:54:04,860 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure KbFilter_CreateClose [2021-10-28 22:54:04,860 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure KbFilter_InternIoCtl [2021-10-28 22:54:04,860 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure KeWaitForSingleObject [2021-10-28 22:54:04,860 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure IofCompleteRequest [2021-10-28 22:54:04,861 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure KbFilter_DispatchPassThrough [2021-10-28 22:54:04,861 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure KbFilter_PnP [2021-10-28 22:54:04,886 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 41 nodes and edges [2021-10-28 22:54:04,887 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 26 nodes and edges [2021-10-28 22:54:04,889 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-28 22:54:04,891 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-28 22:54:05,051 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72434f5-1114-414f-9158-5c913d9747da/bin/uautomizer-GMMbpWq8iD/witness.graphml [2021-10-28 22:54:05,052 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 22:54:05,053 INFO L168 Benchmark]: Toolchain (without parser) took 17930.01 ms. Allocated memory was 100.7 MB in the beginning and 125.8 MB in the end (delta: 25.2 MB). Free memory was 77.5 MB in the beginning and 88.8 MB in the end (delta: -11.3 MB). Peak memory consumption was 80.4 MB. Max. memory is 16.1 GB. [2021-10-28 22:54:05,054 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 81.8 MB. Free memory was 56.7 MB in the beginning and 56.6 MB in the end (delta: 42.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 22:54:05,055 INFO L168 Benchmark]: CACSL2BoogieTranslator took 526.28 ms. Allocated memory is still 100.7 MB. Free memory was 77.5 MB in the beginning and 59.4 MB in the end (delta: 18.1 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2021-10-28 22:54:05,055 INFO L168 Benchmark]: Boogie Preprocessor took 104.17 ms. Allocated memory is still 100.7 MB. Free memory was 59.4 MB in the beginning and 56.5 MB in the end (delta: 2.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-28 22:54:05,055 INFO L168 Benchmark]: RCFGBuilder took 1142.21 ms. Allocated memory is still 100.7 MB. Free memory was 56.5 MB in the beginning and 63.7 MB in the end (delta: -7.2 MB). Peak memory consumption was 27.0 MB. Max. memory is 16.1 GB. [2021-10-28 22:54:05,056 INFO L168 Benchmark]: TraceAbstraction took 15943.94 ms. Allocated memory was 100.7 MB in the beginning and 125.8 MB in the end (delta: 25.2 MB). Free memory was 63.1 MB in the beginning and 31.2 MB in the end (delta: 31.9 MB). Peak memory consumption was 55.5 MB. Max. memory is 16.1 GB. [2021-10-28 22:54:05,056 INFO L168 Benchmark]: Witness Printer took 204.68 ms. Allocated memory is still 125.8 MB. Free memory was 30.1 MB in the beginning and 88.8 MB in the end (delta: -58.6 MB). Peak memory consumption was 6.4 MB. Max. memory is 16.1 GB. [2021-10-28 22:54:05,058 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 81.8 MB. Free memory was 56.7 MB in the beginning and 56.6 MB in the end (delta: 42.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 526.28 ms. Allocated memory is still 100.7 MB. Free memory was 77.5 MB in the beginning and 59.4 MB in the end (delta: 18.1 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 104.17 ms. Allocated memory is still 100.7 MB. Free memory was 59.4 MB in the beginning and 56.5 MB in the end (delta: 2.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1142.21 ms. Allocated memory is still 100.7 MB. Free memory was 56.5 MB in the beginning and 63.7 MB in the end (delta: -7.2 MB). Peak memory consumption was 27.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 15943.94 ms. Allocated memory was 100.7 MB in the beginning and 125.8 MB in the end (delta: 25.2 MB). Free memory was 63.1 MB in the beginning and 31.2 MB in the end (delta: 31.9 MB). Peak memory consumption was 55.5 MB. Max. memory is 16.1 GB. * Witness Printer took 204.68 ms. Allocated memory is still 125.8 MB. Free memory was 30.1 MB in the beginning and 88.8 MB in the end (delta: -58.6 MB). Peak memory consumption was 6.4 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 295]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 1013]: 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 19 procedures, 243 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 15.8s, OverallIterations: 19, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 10.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 3203 SDtfs, 5290 SDslu, 3440 SDs, 0 SdLazy, 6525 SolverSat, 1186 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 6.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 358 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 181 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 4.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=341occurred in iteration=4, InterpolantAutomatonStates: 156, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 19 MinimizatonAttempts, 163 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 4.1s InterpolantComputationTime, 944 NumberOfCodeBlocks, 944 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 925 ConstructedInterpolants, 0 QuantifiedInterpolants, 4851 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 19 InterpolantComputations, 19 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! [2021-10-28 22:54:05,105 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72434f5-1114-414f-9158-5c913d9747da/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...