./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ntdrivers-simplified/floppy_simpl3.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477ed157-9a1d-40bb-af54-73ffa40366aa/bin/uautomizer-ZXIjhQolGL/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477ed157-9a1d-40bb-af54-73ffa40366aa/bin/uautomizer-ZXIjhQolGL/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477ed157-9a1d-40bb-af54-73ffa40366aa/bin/uautomizer-ZXIjhQolGL/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477ed157-9a1d-40bb-af54-73ffa40366aa/bin/uautomizer-ZXIjhQolGL/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ntdrivers-simplified/floppy_simpl3.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477ed157-9a1d-40bb-af54-73ffa40366aa/bin/uautomizer-ZXIjhQolGL/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477ed157-9a1d-40bb-af54-73ffa40366aa/bin/uautomizer-ZXIjhQolGL --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 1fa38cbba4031a56736a5ec3c724b1da0a42c893b0e9010b5807defb3e1b19fa --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 05:08:42,936 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 05:08:42,938 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 05:08:42,991 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 05:08:42,992 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 05:08:42,996 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 05:08:42,999 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 05:08:43,004 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 05:08:43,007 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 05:08:43,014 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 05:08:43,015 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 05:08:43,017 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 05:08:43,018 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 05:08:43,021 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 05:08:43,024 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 05:08:43,030 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 05:08:43,033 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 05:08:43,034 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 05:08:43,036 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 05:08:43,038 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 05:08:43,040 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 05:08:43,045 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 05:08:43,046 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 05:08:43,049 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 05:08:43,052 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 05:08:43,056 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 05:08:43,056 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 05:08:43,060 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 05:08:43,060 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 05:08:43,061 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 05:08:43,061 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 05:08:43,062 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 05:08:43,063 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 05:08:43,064 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 05:08:43,065 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 05:08:43,065 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 05:08:43,065 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 05:08:43,066 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 05:08:43,066 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 05:08:43,067 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 05:08:43,067 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 05:08:43,068 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477ed157-9a1d-40bb-af54-73ffa40366aa/bin/uautomizer-ZXIjhQolGL/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-11-19 05:08:43,097 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 05:08:43,098 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 05:08:43,099 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-19 05:08:43,099 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-19 05:08:43,103 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 05:08:43,104 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 05:08:43,105 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-19 05:08:43,105 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-19 05:08:43,105 INFO L138 SettingsManager]: * Use SBE=true [2021-11-19 05:08:43,105 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 05:08:43,106 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 05:08:43,107 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-19 05:08:43,107 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 05:08:43,107 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 05:08:43,107 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 05:08:43,108 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-19 05:08:43,108 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-19 05:08:43,108 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-19 05:08:43,108 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 05:08:43,108 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 05:08:43,109 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 05:08:43,109 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 05:08:43,109 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 05:08:43,109 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 05:08:43,110 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 05:08:43,110 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 05:08:43,110 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 05:08:43,110 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 05:08:43,110 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-19 05:08:43,112 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 05:08:43,112 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 05:08:43,112 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_477ed157-9a1d-40bb-af54-73ffa40366aa/bin/uautomizer-ZXIjhQolGL/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477ed157-9a1d-40bb-af54-73ffa40366aa/bin/uautomizer-ZXIjhQolGL Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1fa38cbba4031a56736a5ec3c724b1da0a42c893b0e9010b5807defb3e1b19fa [2021-11-19 05:08:43,390 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 05:08:43,412 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 05:08:43,415 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 05:08:43,416 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 05:08:43,417 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 05:08:43,419 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477ed157-9a1d-40bb-af54-73ffa40366aa/bin/uautomizer-ZXIjhQolGL/../../sv-benchmarks/c/ntdrivers-simplified/floppy_simpl3.cil-2.c [2021-11-19 05:08:43,482 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477ed157-9a1d-40bb-af54-73ffa40366aa/bin/uautomizer-ZXIjhQolGL/data/9da13fb05/1ffbad2f7b6240a4b19841b458c1da3e/FLAGa623476a3 [2021-11-19 05:08:44,024 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 05:08:44,025 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477ed157-9a1d-40bb-af54-73ffa40366aa/sv-benchmarks/c/ntdrivers-simplified/floppy_simpl3.cil-2.c [2021-11-19 05:08:44,045 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477ed157-9a1d-40bb-af54-73ffa40366aa/bin/uautomizer-ZXIjhQolGL/data/9da13fb05/1ffbad2f7b6240a4b19841b458c1da3e/FLAGa623476a3 [2021-11-19 05:08:44,338 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477ed157-9a1d-40bb-af54-73ffa40366aa/bin/uautomizer-ZXIjhQolGL/data/9da13fb05/1ffbad2f7b6240a4b19841b458c1da3e [2021-11-19 05:08:44,347 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 05:08:44,349 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-11-19 05:08:44,350 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 05:08:44,350 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 05:08:44,357 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 05:08:44,358 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:08:44" (1/1) ... [2021-11-19 05:08:44,360 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b00f997 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:08:44, skipping insertion in model container [2021-11-19 05:08:44,361 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:08:44" (1/1) ... [2021-11-19 05:08:44,368 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 05:08:44,438 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 05:08:44,651 WARN L230 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_477ed157-9a1d-40bb-af54-73ffa40366aa/sv-benchmarks/c/ntdrivers-simplified/floppy_simpl3.cil-2.c[2713,2726] [2021-11-19 05:08:44,834 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 05:08:44,859 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 05:08:44,887 WARN L230 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_477ed157-9a1d-40bb-af54-73ffa40366aa/sv-benchmarks/c/ntdrivers-simplified/floppy_simpl3.cil-2.c[2713,2726] [2021-11-19 05:08:44,996 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 05:08:45,014 INFO L208 MainTranslator]: Completed translation [2021-11-19 05:08:45,014 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:08:45 WrapperNode [2021-11-19 05:08:45,015 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 05:08:45,016 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 05:08:45,016 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 05:08:45,016 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 05:08:45,030 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:08:45" (1/1) ... [2021-11-19 05:08:45,031 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:08:45" (1/1) ... [2021-11-19 05:08:45,049 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:08:45" (1/1) ... [2021-11-19 05:08:45,050 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:08:45" (1/1) ... [2021-11-19 05:08:45,092 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:08:45" (1/1) ... [2021-11-19 05:08:45,128 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:08:45" (1/1) ... [2021-11-19 05:08:45,133 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:08:45" (1/1) ... [2021-11-19 05:08:45,140 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 05:08:45,141 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 05:08:45,149 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 05:08:45,149 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 05:08:45,150 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:08:45" (1/1) ... [2021-11-19 05:08:45,159 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 05:08:45,173 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477ed157-9a1d-40bb-af54-73ffa40366aa/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 05:08:45,185 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477ed157-9a1d-40bb-af54-73ffa40366aa/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 05:08:45,199 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477ed157-9a1d-40bb-af54-73ffa40366aa/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 05:08:45,231 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-11-19 05:08:45,231 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 05:08:45,231 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-11-19 05:08:45,232 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2021-11-19 05:08:45,232 INFO L138 BoogieDeclarations]: Found implementation of procedure _BLAST_init [2021-11-19 05:08:45,232 INFO L138 BoogieDeclarations]: Found implementation of procedure FlAcpiConfigureFloppy [2021-11-19 05:08:45,232 INFO L138 BoogieDeclarations]: Found implementation of procedure FlQueueIrpToThread [2021-11-19 05:08:45,232 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyPnp [2021-11-19 05:08:45,232 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyStartDevice [2021-11-19 05:08:45,233 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyPnpComplete [2021-11-19 05:08:45,233 INFO L138 BoogieDeclarations]: Found implementation of procedure FlFdcDeviceIo [2021-11-19 05:08:45,233 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyProcessQueuedRequests [2021-11-19 05:08:45,233 INFO L138 BoogieDeclarations]: Found implementation of procedure stub_driver_init [2021-11-19 05:08:45,233 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-11-19 05:08:45,233 INFO L138 BoogieDeclarations]: Found implementation of procedure IoBuildDeviceIoControlRequest [2021-11-19 05:08:45,233 INFO L138 BoogieDeclarations]: Found implementation of procedure IoDeleteSymbolicLink [2021-11-19 05:08:45,234 INFO L138 BoogieDeclarations]: Found implementation of procedure IoQueryDeviceDescription [2021-11-19 05:08:45,234 INFO L138 BoogieDeclarations]: Found implementation of procedure IoRegisterDeviceInterface [2021-11-19 05:08:45,234 INFO L138 BoogieDeclarations]: Found implementation of procedure IoSetDeviceInterfaceState [2021-11-19 05:08:45,234 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2021-11-19 05:08:45,234 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2021-11-19 05:08:45,234 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2021-11-19 05:08:45,235 INFO L138 BoogieDeclarations]: Found implementation of procedure KeSetEvent [2021-11-19 05:08:45,235 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2021-11-19 05:08:45,235 INFO L138 BoogieDeclarations]: Found implementation of procedure ObReferenceObjectByHandle [2021-11-19 05:08:45,235 INFO L138 BoogieDeclarations]: Found implementation of procedure PsCreateSystemThread [2021-11-19 05:08:45,235 INFO L138 BoogieDeclarations]: Found implementation of procedure ZwClose [2021-11-19 05:08:45,235 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyCreateClose [2021-11-19 05:08:45,235 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-11-19 05:08:45,236 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-11-19 05:08:45,236 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-11-19 05:08:45,236 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 05:08:45,236 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2021-11-19 05:08:45,236 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-11-19 05:08:45,236 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2021-11-19 05:08:45,237 INFO L130 BoogieDeclarations]: Found specification of procedure FlAcpiConfigureFloppy [2021-11-19 05:08:45,237 INFO L130 BoogieDeclarations]: Found specification of procedure FlQueueIrpToThread [2021-11-19 05:08:45,237 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyPnp [2021-11-19 05:08:45,237 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyStartDevice [2021-11-19 05:08:45,237 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyPnpComplete [2021-11-19 05:08:45,237 INFO L130 BoogieDeclarations]: Found specification of procedure FlFdcDeviceIo [2021-11-19 05:08:45,237 INFO L130 BoogieDeclarations]: Found specification of procedure IoBuildDeviceIoControlRequest [2021-11-19 05:08:45,238 INFO L130 BoogieDeclarations]: Found specification of procedure IoDeleteSymbolicLink [2021-11-19 05:08:45,238 INFO L130 BoogieDeclarations]: Found specification of procedure IoQueryDeviceDescription [2021-11-19 05:08:45,238 INFO L130 BoogieDeclarations]: Found specification of procedure IoRegisterDeviceInterface [2021-11-19 05:08:45,238 INFO L130 BoogieDeclarations]: Found specification of procedure IoSetDeviceInterfaceState [2021-11-19 05:08:45,238 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2021-11-19 05:08:45,238 INFO L130 BoogieDeclarations]: Found specification of procedure KeSetEvent [2021-11-19 05:08:45,238 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2021-11-19 05:08:45,239 INFO L130 BoogieDeclarations]: Found specification of procedure ObReferenceObjectByHandle [2021-11-19 05:08:45,239 INFO L130 BoogieDeclarations]: Found specification of procedure PsCreateSystemThread [2021-11-19 05:08:45,239 INFO L130 BoogieDeclarations]: Found specification of procedure ZwClose [2021-11-19 05:08:45,239 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2021-11-19 05:08:45,239 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2021-11-19 05:08:45,239 INFO L130 BoogieDeclarations]: Found specification of procedure _BLAST_init [2021-11-19 05:08:45,240 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyProcessQueuedRequests [2021-11-19 05:08:45,240 INFO L130 BoogieDeclarations]: Found specification of procedure stub_driver_init [2021-11-19 05:08:45,240 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-11-19 05:08:45,240 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2021-11-19 05:08:45,240 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyCreateClose [2021-11-19 05:08:45,240 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-11-19 05:08:45,240 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-19 05:08:45,241 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 05:08:45,241 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-19 05:08:45,241 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-19 05:08:45,241 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-19 05:08:45,473 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 05:08:45,475 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 05:08:45,535 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-19 05:08:45,565 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2021-11-19 05:08:45,566 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2021-11-19 05:08:45,576 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-19 05:08:45,585 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2021-11-19 05:08:45,586 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2021-11-19 05:08:45,591 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-19 05:08:45,800 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##21: assume !false; [2021-11-19 05:08:45,801 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##20: assume false; [2021-11-19 05:08:45,803 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-19 05:08:45,853 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume false; [2021-11-19 05:08:45,854 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume !false; [2021-11-19 05:08:45,869 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-19 05:08:45,898 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2021-11-19 05:08:45,898 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2021-11-19 05:08:46,010 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-19 05:08:46,017 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2021-11-19 05:08:46,017 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2021-11-19 05:08:46,018 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-19 05:08:46,024 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2021-11-19 05:08:46,025 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2021-11-19 05:08:46,025 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-19 05:08:46,034 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2021-11-19 05:08:46,034 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2021-11-19 05:08:46,066 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-19 05:08:46,091 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2021-11-19 05:08:46,092 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2021-11-19 05:08:46,117 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-19 05:08:46,122 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2021-11-19 05:08:46,122 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2021-11-19 05:08:46,123 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-19 05:08:46,130 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2021-11-19 05:08:46,130 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2021-11-19 05:08:46,130 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-19 05:08:46,135 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2021-11-19 05:08:46,136 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2021-11-19 05:08:46,149 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 05:08:46,161 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 05:08:46,161 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-19 05:08:46,164 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:08:46 BoogieIcfgContainer [2021-11-19 05:08:46,164 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 05:08:46,166 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 05:08:46,166 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 05:08:46,170 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 05:08:46,171 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:08:44" (1/3) ... [2021-11-19 05:08:46,172 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ccc547 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:08:46, skipping insertion in model container [2021-11-19 05:08:46,172 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:08:45" (2/3) ... [2021-11-19 05:08:46,172 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ccc547 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:08:46, skipping insertion in model container [2021-11-19 05:08:46,173 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:08:46" (3/3) ... [2021-11-19 05:08:46,174 INFO L111 eAbstractionObserver]: Analyzing ICFG floppy_simpl3.cil-2.c [2021-11-19 05:08:46,180 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 05:08:46,181 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-19 05:08:46,230 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 05:08:46,237 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 [2021-11-19 05:08:46,238 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-19 05:08:46,264 INFO L276 IsEmpty]: Start isEmpty. Operand has 305 states, 221 states have (on average 1.4253393665158371) internal successors, (315), 244 states have internal predecessors, (315), 56 states have call successors, (56), 24 states have call predecessors, (56), 24 states have return successors, (56), 51 states have call predecessors, (56), 56 states have call successors, (56) [2021-11-19 05:08:46,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-19 05:08:46,273 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:08:46,274 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:08:46,274 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ENSURES_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-19 05:08:46,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:08:46,280 INFO L85 PathProgramCache]: Analyzing trace with hash -2120787036, now seen corresponding path program 1 times [2021-11-19 05:08:46,290 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:08:46,291 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120927593] [2021-11-19 05:08:46,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:08:46,292 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:08:46,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:08:46,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:08:46,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:08:46,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 05:08:46,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:08:46,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:08:46,627 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:08:46,627 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120927593] [2021-11-19 05:08:46,628 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120927593] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:08:46,629 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:08:46,629 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-19 05:08:46,631 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515171633] [2021-11-19 05:08:46,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:08:46,636 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 05:08:46,636 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:08:46,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 05:08:46,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 05:08:46,668 INFO L87 Difference]: Start difference. First operand has 305 states, 221 states have (on average 1.4253393665158371) internal successors, (315), 244 states have internal predecessors, (315), 56 states have call successors, (56), 24 states have call predecessors, (56), 24 states have return successors, (56), 51 states have call predecessors, (56), 56 states have call successors, (56) 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) [2021-11-19 05:08:47,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:08:47,600 INFO L93 Difference]: Finished difference Result 329 states and 449 transitions. [2021-11-19 05:08:47,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 05:08:47,603 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 [2021-11-19 05:08:47,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:08:47,628 INFO L225 Difference]: With dead ends: 329 [2021-11-19 05:08:47,629 INFO L226 Difference]: Without dead ends: 322 [2021-11-19 05:08:47,631 INFO L932 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 [2021-11-19 05:08:47,636 INFO L933 BasicCegarLoop]: 369 mSDtfsCounter, 232 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 307 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 412 SdHoareTripleChecker+Invalid, 429 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-19 05:08:47,638 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [235 Valid, 412 Invalid, 429 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 307 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-19 05:08:47,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2021-11-19 05:08:47,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 292. [2021-11-19 05:08:47,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 213 states have (on average 1.375586854460094) internal successors, (293), 233 states have internal predecessors, (293), 56 states have call successors, (56), 24 states have call predecessors, (56), 22 states have return successors, (37), 36 states have call predecessors, (37), 37 states have call successors, (37) [2021-11-19 05:08:47,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 386 transitions. [2021-11-19 05:08:47,742 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 386 transitions. Word has length 15 [2021-11-19 05:08:47,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:08:47,744 INFO L470 AbstractCegarLoop]: Abstraction has 292 states and 386 transitions. [2021-11-19 05:08:47,745 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) [2021-11-19 05:08:47,745 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 386 transitions. [2021-11-19 05:08:47,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-19 05:08:47,746 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:08:47,746 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:08:47,747 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-19 05:08:47,748 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-19 05:08:47,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:08:47,748 INFO L85 PathProgramCache]: Analyzing trace with hash 1263023814, now seen corresponding path program 1 times [2021-11-19 05:08:47,749 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:08:47,749 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034427920] [2021-11-19 05:08:47,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:08:47,749 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:08:47,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:08:47,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:08:47,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:08:48,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 05:08:48,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:08:48,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:08:48,062 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:08:48,062 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034427920] [2021-11-19 05:08:48,063 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034427920] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:08:48,063 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:08:48,063 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-19 05:08:48,063 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738315403] [2021-11-19 05:08:48,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:08:48,065 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 05:08:48,065 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:08:48,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 05:08:48,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-19 05:08:48,066 INFO L87 Difference]: Start difference. First operand 292 states and 386 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) [2021-11-19 05:08:48,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:08:48,938 INFO L93 Difference]: Finished difference Result 322 states and 432 transitions. [2021-11-19 05:08:48,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 05:08:48,939 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 [2021-11-19 05:08:48,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:08:48,942 INFO L225 Difference]: With dead ends: 322 [2021-11-19 05:08:48,943 INFO L226 Difference]: Without dead ends: 322 [2021-11-19 05:08:48,943 INFO L932 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 [2021-11-19 05:08:48,945 INFO L933 BasicCegarLoop]: 350 mSDtfsCounter, 237 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 482 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 599 SdHoareTripleChecker+Invalid, 604 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 482 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-19 05:08:48,946 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [242 Valid, 599 Invalid, 604 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 482 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-19 05:08:48,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2021-11-19 05:08:48,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 292. [2021-11-19 05:08:48,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 213 states have (on average 1.3708920187793427) internal successors, (292), 233 states have internal predecessors, (292), 56 states have call successors, (56), 24 states have call predecessors, (56), 22 states have return successors, (37), 36 states have call predecessors, (37), 37 states have call successors, (37) [2021-11-19 05:08:48,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 385 transitions. [2021-11-19 05:08:48,964 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 385 transitions. Word has length 20 [2021-11-19 05:08:48,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:08:48,965 INFO L470 AbstractCegarLoop]: Abstraction has 292 states and 385 transitions. [2021-11-19 05:08:48,965 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) [2021-11-19 05:08:48,965 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 385 transitions. [2021-11-19 05:08:48,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-19 05:08:48,967 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:08:48,967 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:08:48,967 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-19 05:08:48,967 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-19 05:08:48,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:08:48,968 INFO L85 PathProgramCache]: Analyzing trace with hash 1377431699, now seen corresponding path program 1 times [2021-11-19 05:08:48,968 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:08:48,969 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180152214] [2021-11-19 05:08:48,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:08:48,969 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:08:49,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:08:49,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:08:49,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:08:49,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 05:08:49,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:08:49,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-19 05:08:49,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:08:49,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:08:49,163 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:08:49,164 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180152214] [2021-11-19 05:08:49,164 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180152214] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:08:49,164 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:08:49,164 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-19 05:08:49,165 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660848791] [2021-11-19 05:08:49,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:08:49,165 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 05:08:49,166 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:08:49,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 05:08:49,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-19 05:08:49,167 INFO L87 Difference]: Start difference. First operand 292 states and 385 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) [2021-11-19 05:08:50,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:08:50,905 INFO L93 Difference]: Finished difference Result 477 states and 636 transitions. [2021-11-19 05:08:50,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 05:08:50,906 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 [2021-11-19 05:08:50,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:08:50,911 INFO L225 Difference]: With dead ends: 477 [2021-11-19 05:08:50,911 INFO L226 Difference]: Without dead ends: 476 [2021-11-19 05:08:50,911 INFO L932 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 [2021-11-19 05:08:50,913 INFO L933 BasicCegarLoop]: 504 mSDtfsCounter, 449 mSDsluCounter, 268 mSDsCounter, 0 mSdLazyCounter, 1173 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 455 SdHoareTripleChecker+Valid, 772 SdHoareTripleChecker+Invalid, 1278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 1173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-11-19 05:08:50,914 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [455 Valid, 772 Invalid, 1278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 1173 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-11-19 05:08:50,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476 states. [2021-11-19 05:08:50,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476 to 429. [2021-11-19 05:08:50,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 429 states, 328 states have (on average 1.3140243902439024) internal successors, (431), 334 states have internal predecessors, (431), 65 states have call successors, (65), 37 states have call predecessors, (65), 35 states have return successors, (74), 59 states have call predecessors, (74), 54 states have call successors, (74) [2021-11-19 05:08:50,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 570 transitions. [2021-11-19 05:08:50,951 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 570 transitions. Word has length 28 [2021-11-19 05:08:50,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:08:50,953 INFO L470 AbstractCegarLoop]: Abstraction has 429 states and 570 transitions. [2021-11-19 05:08:50,953 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) [2021-11-19 05:08:50,953 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 570 transitions. [2021-11-19 05:08:50,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-19 05:08:50,955 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:08:50,955 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:08:50,955 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-19 05:08:50,955 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-19 05:08:50,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:08:50,966 INFO L85 PathProgramCache]: Analyzing trace with hash 1586729981, now seen corresponding path program 1 times [2021-11-19 05:08:50,967 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:08:50,967 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690243559] [2021-11-19 05:08:50,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:08:50,968 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:08:51,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:08:51,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:08:51,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:08:51,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 05:08:51,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:08:51,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-19 05:08:51,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:08:51,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:08:51,180 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:08:51,181 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690243559] [2021-11-19 05:08:51,181 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690243559] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:08:51,181 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:08:51,181 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-19 05:08:51,181 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258676087] [2021-11-19 05:08:51,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:08:51,183 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 05:08:51,183 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:08:51,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 05:08:51,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-19 05:08:51,184 INFO L87 Difference]: Start difference. First operand 429 states and 570 transitions. Second operand has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 3 states have internal predecessors, (20), 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) [2021-11-19 05:08:52,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:08:52,084 INFO L93 Difference]: Finished difference Result 675 states and 900 transitions. [2021-11-19 05:08:52,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 05:08:52,085 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 3 states have internal predecessors, (20), 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 30 [2021-11-19 05:08:52,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:08:52,094 INFO L225 Difference]: With dead ends: 675 [2021-11-19 05:08:52,095 INFO L226 Difference]: Without dead ends: 675 [2021-11-19 05:08:52,095 INFO L932 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 [2021-11-19 05:08:52,107 INFO L933 BasicCegarLoop]: 349 mSDtfsCounter, 770 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 355 mSolverCounterSat, 251 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 777 SdHoareTripleChecker+Valid, 556 SdHoareTripleChecker+Invalid, 606 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 251 IncrementalHoareTripleChecker+Valid, 355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-19 05:08:52,109 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [777 Valid, 556 Invalid, 606 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [251 Valid, 355 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-19 05:08:52,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 675 states. [2021-11-19 05:08:52,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 675 to 632. [2021-11-19 05:08:52,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 632 states, 493 states have (on average 1.3144016227180528) internal successors, (648), 497 states have internal predecessors, (648), 85 states have call successors, (85), 55 states have call predecessors, (85), 53 states have return successors, (112), 81 states have call predecessors, (112), 76 states have call successors, (112) [2021-11-19 05:08:52,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 632 states to 632 states and 845 transitions. [2021-11-19 05:08:52,170 INFO L78 Accepts]: Start accepts. Automaton has 632 states and 845 transitions. Word has length 30 [2021-11-19 05:08:52,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:08:52,171 INFO L470 AbstractCegarLoop]: Abstraction has 632 states and 845 transitions. [2021-11-19 05:08:52,171 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 3 states have internal predecessors, (20), 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) [2021-11-19 05:08:52,172 INFO L276 IsEmpty]: Start isEmpty. Operand 632 states and 845 transitions. [2021-11-19 05:08:52,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-19 05:08:52,175 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:08:52,176 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:08:52,176 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-19 05:08:52,176 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-19 05:08:52,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:08:52,177 INFO L85 PathProgramCache]: Analyzing trace with hash -962074547, now seen corresponding path program 1 times [2021-11-19 05:08:52,177 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:08:52,178 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879889965] [2021-11-19 05:08:52,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:08:52,179 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:08:52,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:08:52,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:08:52,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:08:52,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 05:08:52,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:08:52,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-19 05:08:52,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:08:52,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:08:52,380 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:08:52,380 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879889965] [2021-11-19 05:08:52,381 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879889965] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:08:52,381 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:08:52,381 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-19 05:08:52,381 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474737608] [2021-11-19 05:08:52,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:08:52,382 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 05:08:52,382 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:08:52,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 05:08:52,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-19 05:08:52,383 INFO L87 Difference]: Start difference. First operand 632 states and 845 transitions. Second operand has 6 states, 6 states have (on average 4.0) internal successors, (24), 3 states have internal predecessors, (24), 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) [2021-11-19 05:08:53,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:08:53,341 INFO L93 Difference]: Finished difference Result 721 states and 953 transitions. [2021-11-19 05:08:53,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 05:08:53,343 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 3 states have internal predecessors, (24), 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 34 [2021-11-19 05:08:53,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:08:53,348 INFO L225 Difference]: With dead ends: 721 [2021-11-19 05:08:53,348 INFO L226 Difference]: Without dead ends: 721 [2021-11-19 05:08:53,349 INFO L932 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 [2021-11-19 05:08:53,350 INFO L933 BasicCegarLoop]: 325 mSDtfsCounter, 586 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 529 mSolverCounterSat, 153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 593 SdHoareTripleChecker+Valid, 447 SdHoareTripleChecker+Invalid, 682 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 153 IncrementalHoareTripleChecker+Valid, 529 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-19 05:08:53,350 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [593 Valid, 447 Invalid, 682 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [153 Valid, 529 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-19 05:08:53,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 721 states. [2021-11-19 05:08:53,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 721 to 670. [2021-11-19 05:08:53,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 670 states, 525 states have (on average 1.3161904761904761) internal successors, (691), 535 states have internal predecessors, (691), 86 states have call successors, (86), 57 states have call predecessors, (86), 58 states have return successors, (117), 80 states have call predecessors, (117), 78 states have call successors, (117) [2021-11-19 05:08:53,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 670 states to 670 states and 894 transitions. [2021-11-19 05:08:53,378 INFO L78 Accepts]: Start accepts. Automaton has 670 states and 894 transitions. Word has length 34 [2021-11-19 05:08:53,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:08:53,378 INFO L470 AbstractCegarLoop]: Abstraction has 670 states and 894 transitions. [2021-11-19 05:08:53,379 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 3 states have internal predecessors, (24), 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) [2021-11-19 05:08:53,379 INFO L276 IsEmpty]: Start isEmpty. Operand 670 states and 894 transitions. [2021-11-19 05:08:53,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-19 05:08:53,381 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:08:53,381 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:08:53,382 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-19 05:08:53,382 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-19 05:08:53,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:08:53,382 INFO L85 PathProgramCache]: Analyzing trace with hash 82742685, now seen corresponding path program 1 times [2021-11-19 05:08:53,382 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:08:53,382 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314347377] [2021-11-19 05:08:53,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:08:53,383 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:08:53,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:08:53,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:08:53,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:08:53,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 05:08:53,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:08:53,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-19 05:08:53,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:08:53,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-11-19 05:08:53,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:08:53,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:08:53,581 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:08:53,581 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314347377] [2021-11-19 05:08:53,581 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314347377] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:08:53,581 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:08:53,581 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-19 05:08:53,581 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468679201] [2021-11-19 05:08:53,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:08:53,582 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 05:08:53,582 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:08:53,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 05:08:53,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-19 05:08:53,583 INFO L87 Difference]: Start difference. First operand 670 states and 894 transitions. Second operand has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-19 05:08:54,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:08:54,879 INFO L93 Difference]: Finished difference Result 696 states and 924 transitions. [2021-11-19 05:08:54,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-19 05:08:54,880 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 41 [2021-11-19 05:08:54,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:08:54,912 INFO L225 Difference]: With dead ends: 696 [2021-11-19 05:08:54,912 INFO L226 Difference]: Without dead ends: 696 [2021-11-19 05:08:54,913 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-11-19 05:08:54,913 INFO L933 BasicCegarLoop]: 321 mSDtfsCounter, 307 mSDsluCounter, 541 mSDsCounter, 0 mSdLazyCounter, 1323 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 321 SdHoareTripleChecker+Valid, 862 SdHoareTripleChecker+Invalid, 1436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 1323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-11-19 05:08:54,914 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [321 Valid, 862 Invalid, 1436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 1323 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-11-19 05:08:54,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696 states. [2021-11-19 05:08:54,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696 to 674. [2021-11-19 05:08:54,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 674 states, 528 states have (on average 1.3143939393939394) internal successors, (694), 538 states have internal predecessors, (694), 86 states have call successors, (86), 57 states have call predecessors, (86), 59 states have return successors, (118), 81 states have call predecessors, (118), 78 states have call successors, (118) [2021-11-19 05:08:54,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 674 states to 674 states and 898 transitions. [2021-11-19 05:08:54,940 INFO L78 Accepts]: Start accepts. Automaton has 674 states and 898 transitions. Word has length 41 [2021-11-19 05:08:54,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:08:54,940 INFO L470 AbstractCegarLoop]: Abstraction has 674 states and 898 transitions. [2021-11-19 05:08:54,941 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-19 05:08:54,941 INFO L276 IsEmpty]: Start isEmpty. Operand 674 states and 898 transitions. [2021-11-19 05:08:54,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-19 05:08:54,943 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:08:54,943 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:08:54,943 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-19 05:08:54,943 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-19 05:08:54,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:08:54,944 INFO L85 PathProgramCache]: Analyzing trace with hash -127535261, now seen corresponding path program 1 times [2021-11-19 05:08:54,944 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:08:54,944 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872145774] [2021-11-19 05:08:54,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:08:54,945 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:08:54,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:08:55,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:08:55,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:08:55,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 05:08:55,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:08:55,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-19 05:08:55,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:08:55,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:08:55,106 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:08:55,106 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872145774] [2021-11-19 05:08:55,106 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872145774] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:08:55,106 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:08:55,106 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-19 05:08:55,107 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549853833] [2021-11-19 05:08:55,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:08:55,107 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 05:08:55,107 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:08:55,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 05:08:55,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-19 05:08:55,108 INFO L87 Difference]: Start difference. First operand 674 states and 898 transitions. Second operand has 6 states, 6 states have (on average 5.0) internal successors, (30), 3 states have internal predecessors, (30), 3 states have call successors, (7), 6 states have call predecessors, (7), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-19 05:08:55,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:08:55,845 INFO L93 Difference]: Finished difference Result 698 states and 928 transitions. [2021-11-19 05:08:55,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 05:08:55,846 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.0) internal successors, (30), 3 states have internal predecessors, (30), 3 states have call successors, (7), 6 states have call predecessors, (7), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 40 [2021-11-19 05:08:55,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:08:55,851 INFO L225 Difference]: With dead ends: 698 [2021-11-19 05:08:55,851 INFO L226 Difference]: Without dead ends: 698 [2021-11-19 05:08:55,851 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-19 05:08:55,852 INFO L933 BasicCegarLoop]: 342 mSDtfsCounter, 410 mSDsluCounter, 223 mSDsCounter, 0 mSdLazyCounter, 451 mSolverCounterSat, 153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 413 SdHoareTripleChecker+Valid, 565 SdHoareTripleChecker+Invalid, 604 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 153 IncrementalHoareTripleChecker+Valid, 451 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-19 05:08:55,852 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [413 Valid, 565 Invalid, 604 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [153 Valid, 451 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-19 05:08:55,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 698 states. [2021-11-19 05:08:55,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 698 to 685. [2021-11-19 05:08:55,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 685 states, 539 states have (on average 1.313543599257885) internal successors, (708), 548 states have internal predecessors, (708), 86 states have call successors, (86), 58 states have call predecessors, (86), 59 states have return successors, (118), 81 states have call predecessors, (118), 78 states have call successors, (118) [2021-11-19 05:08:55,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 685 states to 685 states and 912 transitions. [2021-11-19 05:08:55,904 INFO L78 Accepts]: Start accepts. Automaton has 685 states and 912 transitions. Word has length 40 [2021-11-19 05:08:55,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:08:55,904 INFO L470 AbstractCegarLoop]: Abstraction has 685 states and 912 transitions. [2021-11-19 05:08:55,904 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.0) internal successors, (30), 3 states have internal predecessors, (30), 3 states have call successors, (7), 6 states have call predecessors, (7), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-19 05:08:55,904 INFO L276 IsEmpty]: Start isEmpty. Operand 685 states and 912 transitions. [2021-11-19 05:08:55,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-19 05:08:55,906 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:08:55,906 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:08:55,906 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-19 05:08:55,906 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-19 05:08:55,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:08:55,907 INFO L85 PathProgramCache]: Analyzing trace with hash -1411662583, now seen corresponding path program 1 times [2021-11-19 05:08:55,907 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:08:55,908 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279079018] [2021-11-19 05:08:55,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:08:55,908 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:08:55,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:08:55,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:08:56,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:08:56,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 05:08:56,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:08:56,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-19 05:08:56,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:08:56,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-19 05:08:56,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:08:56,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-19 05:08:56,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:08:56,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:08:56,126 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:08:56,126 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279079018] [2021-11-19 05:08:56,126 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279079018] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:08:56,126 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:08:56,126 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-19 05:08:56,127 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819207397] [2021-11-19 05:08:56,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:08:56,127 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 05:08:56,127 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:08:56,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 05:08:56,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-19 05:08:56,128 INFO L87 Difference]: Start difference. First operand 685 states and 912 transitions. Second operand has 8 states, 8 states have (on average 3.625) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2021-11-19 05:08:57,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:08:57,317 INFO L93 Difference]: Finished difference Result 747 states and 988 transitions. [2021-11-19 05:08:57,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 05:08:57,318 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.625) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 41 [2021-11-19 05:08:57,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:08:57,323 INFO L225 Difference]: With dead ends: 747 [2021-11-19 05:08:57,323 INFO L226 Difference]: Without dead ends: 747 [2021-11-19 05:08:57,324 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-11-19 05:08:57,324 INFO L933 BasicCegarLoop]: 330 mSDtfsCounter, 203 mSDsluCounter, 368 mSDsCounter, 0 mSdLazyCounter, 1014 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 698 SdHoareTripleChecker+Invalid, 1079 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 1014 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-19 05:08:57,325 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [206 Valid, 698 Invalid, 1079 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 1014 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-19 05:08:57,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 747 states. [2021-11-19 05:08:57,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 747 to 718. [2021-11-19 05:08:57,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 718 states, 566 states have (on average 1.3091872791519434) internal successors, (741), 578 states have internal predecessors, (741), 86 states have call successors, (86), 58 states have call predecessors, (86), 65 states have return successors, (124), 83 states have call predecessors, (124), 78 states have call successors, (124) [2021-11-19 05:08:57,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 718 states to 718 states and 951 transitions. [2021-11-19 05:08:57,355 INFO L78 Accepts]: Start accepts. Automaton has 718 states and 951 transitions. Word has length 41 [2021-11-19 05:08:57,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:08:57,357 INFO L470 AbstractCegarLoop]: Abstraction has 718 states and 951 transitions. [2021-11-19 05:08:57,357 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.625) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2021-11-19 05:08:57,357 INFO L276 IsEmpty]: Start isEmpty. Operand 718 states and 951 transitions. [2021-11-19 05:08:57,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-19 05:08:57,359 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:08:57,359 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:08:57,359 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-19 05:08:57,360 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-19 05:08:57,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:08:57,360 INFO L85 PathProgramCache]: Analyzing trace with hash -359990476, now seen corresponding path program 1 times [2021-11-19 05:08:57,360 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:08:57,361 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034036845] [2021-11-19 05:08:57,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:08:57,361 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:08:57,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:08:57,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:08:57,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:08:57,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 05:08:57,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:08:57,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-19 05:08:57,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:08:57,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-19 05:08:57,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:08:57,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-19 05:08:57,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:08:57,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:08:57,662 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:08:57,662 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034036845] [2021-11-19 05:08:57,662 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034036845] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:08:57,663 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:08:57,663 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-19 05:08:57,663 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138449525] [2021-11-19 05:08:57,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:08:57,665 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-19 05:08:57,665 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:08:57,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-19 05:08:57,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2021-11-19 05:08:57,666 INFO L87 Difference]: Start difference. First operand 718 states and 951 transitions. Second operand has 12 states, 12 states have (on average 2.5) internal successors, (30), 7 states have internal predecessors, (30), 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) [2021-11-19 05:08:59,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:08:59,116 INFO L93 Difference]: Finished difference Result 747 states and 987 transitions. [2021-11-19 05:08:59,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-19 05:08:59,117 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.5) internal successors, (30), 7 states have internal predecessors, (30), 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 42 [2021-11-19 05:08:59,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:08:59,121 INFO L225 Difference]: With dead ends: 747 [2021-11-19 05:08:59,122 INFO L226 Difference]: Without dead ends: 747 [2021-11-19 05:08:59,122 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2021-11-19 05:08:59,123 INFO L933 BasicCegarLoop]: 313 mSDtfsCounter, 660 mSDsluCounter, 420 mSDsCounter, 0 mSdLazyCounter, 1150 mSolverCounterSat, 186 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 670 SdHoareTripleChecker+Valid, 733 SdHoareTripleChecker+Invalid, 1336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 186 IncrementalHoareTripleChecker+Valid, 1150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-19 05:08:59,123 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [670 Valid, 733 Invalid, 1336 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [186 Valid, 1150 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-19 05:08:59,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 747 states. [2021-11-19 05:08:59,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 747 to 718. [2021-11-19 05:08:59,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 718 states, 566 states have (on average 1.3074204946996466) internal successors, (740), 578 states have internal predecessors, (740), 86 states have call successors, (86), 58 states have call predecessors, (86), 65 states have return successors, (124), 83 states have call predecessors, (124), 78 states have call successors, (124) [2021-11-19 05:08:59,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 718 states to 718 states and 950 transitions. [2021-11-19 05:08:59,146 INFO L78 Accepts]: Start accepts. Automaton has 718 states and 950 transitions. Word has length 42 [2021-11-19 05:08:59,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:08:59,147 INFO L470 AbstractCegarLoop]: Abstraction has 718 states and 950 transitions. [2021-11-19 05:08:59,147 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.5) internal successors, (30), 7 states have internal predecessors, (30), 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) [2021-11-19 05:08:59,147 INFO L276 IsEmpty]: Start isEmpty. Operand 718 states and 950 transitions. [2021-11-19 05:08:59,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-19 05:08:59,148 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:08:59,149 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:08:59,149 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-19 05:08:59,149 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-19 05:08:59,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:08:59,150 INFO L85 PathProgramCache]: Analyzing trace with hash 864804566, now seen corresponding path program 1 times [2021-11-19 05:08:59,150 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:08:59,150 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546044899] [2021-11-19 05:08:59,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:08:59,150 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:08:59,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:08:59,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:08:59,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:08:59,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 05:08:59,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:08:59,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-19 05:08:59,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:08:59,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-19 05:08:59,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:08:59,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-19 05:08:59,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:08:59,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:08:59,423 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:08:59,423 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546044899] [2021-11-19 05:08:59,423 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546044899] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:08:59,423 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:08:59,424 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-19 05:08:59,424 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397706206] [2021-11-19 05:08:59,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:08:59,424 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-19 05:08:59,425 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:08:59,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-19 05:08:59,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2021-11-19 05:08:59,425 INFO L87 Difference]: Start difference. First operand 718 states and 950 transitions. Second operand has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 7 states have internal predecessors, (31), 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) [2021-11-19 05:09:00,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:09:00,589 INFO L93 Difference]: Finished difference Result 747 states and 986 transitions. [2021-11-19 05:09:00,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-19 05:09:00,590 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 7 states have internal predecessors, (31), 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 43 [2021-11-19 05:09:00,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:09:00,595 INFO L225 Difference]: With dead ends: 747 [2021-11-19 05:09:00,595 INFO L226 Difference]: Without dead ends: 747 [2021-11-19 05:09:00,595 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2021-11-19 05:09:00,596 INFO L933 BasicCegarLoop]: 314 mSDtfsCounter, 1115 mSDsluCounter, 299 mSDsCounter, 0 mSdLazyCounter, 617 mSolverCounterSat, 355 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1125 SdHoareTripleChecker+Valid, 613 SdHoareTripleChecker+Invalid, 972 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 355 IncrementalHoareTripleChecker+Valid, 617 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-19 05:09:00,596 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1125 Valid, 613 Invalid, 972 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [355 Valid, 617 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-19 05:09:00,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 747 states. [2021-11-19 05:09:00,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 747 to 718. [2021-11-19 05:09:00,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 718 states, 566 states have (on average 1.3056537102473498) internal successors, (739), 578 states have internal predecessors, (739), 86 states have call successors, (86), 58 states have call predecessors, (86), 65 states have return successors, (124), 83 states have call predecessors, (124), 78 states have call successors, (124) [2021-11-19 05:09:00,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 718 states to 718 states and 949 transitions. [2021-11-19 05:09:00,620 INFO L78 Accepts]: Start accepts. Automaton has 718 states and 949 transitions. Word has length 43 [2021-11-19 05:09:00,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:09:00,621 INFO L470 AbstractCegarLoop]: Abstraction has 718 states and 949 transitions. [2021-11-19 05:09:00,621 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 7 states have internal predecessors, (31), 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) [2021-11-19 05:09:00,621 INFO L276 IsEmpty]: Start isEmpty. Operand 718 states and 949 transitions. [2021-11-19 05:09:00,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-19 05:09:00,622 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:09:00,622 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:09:00,622 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-19 05:09:00,623 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-19 05:09:00,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:09:00,623 INFO L85 PathProgramCache]: Analyzing trace with hash 484799798, now seen corresponding path program 1 times [2021-11-19 05:09:00,623 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:09:00,623 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739237640] [2021-11-19 05:09:00,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:09:00,624 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:09:00,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:00,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:09:00,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:00,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 05:09:00,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:00,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-19 05:09:00,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:00,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-11-19 05:09:00,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:00,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:09:00,780 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:09:00,780 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739237640] [2021-11-19 05:09:00,780 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739237640] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:09:00,780 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:09:00,780 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 05:09:00,780 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804471373] [2021-11-19 05:09:00,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:09:00,781 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 05:09:00,781 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:09:00,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 05:09:00,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-19 05:09:00,782 INFO L87 Difference]: Start difference. First operand 718 states and 949 transitions. Second operand has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (8), 6 states have call predecessors, (8), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-19 05:09:02,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:09:02,147 INFO L93 Difference]: Finished difference Result 1090 states and 1456 transitions. [2021-11-19 05:09:02,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-19 05:09:02,148 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (8), 6 states have call predecessors, (8), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 44 [2021-11-19 05:09:02,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:09:02,155 INFO L225 Difference]: With dead ends: 1090 [2021-11-19 05:09:02,155 INFO L226 Difference]: Without dead ends: 1090 [2021-11-19 05:09:02,155 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-11-19 05:09:02,157 INFO L933 BasicCegarLoop]: 434 mSDtfsCounter, 405 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 1112 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 418 SdHoareTripleChecker+Valid, 661 SdHoareTripleChecker+Invalid, 1226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 1112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-11-19 05:09:02,157 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [418 Valid, 661 Invalid, 1226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 1112 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-11-19 05:09:02,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1090 states. [2021-11-19 05:09:02,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1090 to 831. [2021-11-19 05:09:02,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 831 states, 657 states have (on average 1.3135464231354643) internal successors, (863), 671 states have internal predecessors, (863), 96 states have call successors, (96), 68 states have call predecessors, (96), 77 states have return successors, (144), 93 states have call predecessors, (144), 88 states have call successors, (144) [2021-11-19 05:09:02,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 831 states to 831 states and 1103 transitions. [2021-11-19 05:09:02,193 INFO L78 Accepts]: Start accepts. Automaton has 831 states and 1103 transitions. Word has length 44 [2021-11-19 05:09:02,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:09:02,194 INFO L470 AbstractCegarLoop]: Abstraction has 831 states and 1103 transitions. [2021-11-19 05:09:02,194 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (8), 6 states have call predecessors, (8), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-19 05:09:02,194 INFO L276 IsEmpty]: Start isEmpty. Operand 831 states and 1103 transitions. [2021-11-19 05:09:02,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-19 05:09:02,196 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:09:02,196 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:09:02,196 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-19 05:09:02,196 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-19 05:09:02,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:09:02,197 INFO L85 PathProgramCache]: Analyzing trace with hash 1122912541, now seen corresponding path program 1 times [2021-11-19 05:09:02,197 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:09:02,197 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84152239] [2021-11-19 05:09:02,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:09:02,198 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:09:02,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:02,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:09:02,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:02,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 05:09:02,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:02,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-19 05:09:02,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:02,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-19 05:09:02,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:02,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-19 05:09:02,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:02,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:09:02,435 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:09:02,435 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84152239] [2021-11-19 05:09:02,436 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84152239] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:09:02,436 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:09:02,436 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-19 05:09:02,436 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779926578] [2021-11-19 05:09:02,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:09:02,437 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-19 05:09:02,437 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:09:02,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-19 05:09:02,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-19 05:09:02,438 INFO L87 Difference]: Start difference. First operand 831 states and 1103 transitions. Second operand has 10 states, 10 states have (on average 3.2) internal successors, (32), 4 states have internal predecessors, (32), 2 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2021-11-19 05:09:03,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:09:03,608 INFO L93 Difference]: Finished difference Result 871 states and 1151 transitions. [2021-11-19 05:09:03,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 05:09:03,609 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.2) internal successors, (32), 4 states have internal predecessors, (32), 2 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 44 [2021-11-19 05:09:03,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:09:03,614 INFO L225 Difference]: With dead ends: 871 [2021-11-19 05:09:03,614 INFO L226 Difference]: Without dead ends: 856 [2021-11-19 05:09:03,615 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-19 05:09:03,615 INFO L933 BasicCegarLoop]: 340 mSDtfsCounter, 174 mSDsluCounter, 904 mSDsCounter, 0 mSdLazyCounter, 1483 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 1244 SdHoareTripleChecker+Invalid, 1543 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 1483 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-19 05:09:03,616 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [177 Valid, 1244 Invalid, 1543 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 1483 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-19 05:09:03,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 856 states. [2021-11-19 05:09:03,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 856 to 829. [2021-11-19 05:09:03,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 829 states, 656 states have (on average 1.3125) internal successors, (861), 670 states have internal predecessors, (861), 95 states have call successors, (95), 68 states have call predecessors, (95), 77 states have return successors, (143), 92 states have call predecessors, (143), 87 states have call successors, (143) [2021-11-19 05:09:03,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 829 states to 829 states and 1099 transitions. [2021-11-19 05:09:03,649 INFO L78 Accepts]: Start accepts. Automaton has 829 states and 1099 transitions. Word has length 44 [2021-11-19 05:09:03,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:09:03,649 INFO L470 AbstractCegarLoop]: Abstraction has 829 states and 1099 transitions. [2021-11-19 05:09:03,650 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.2) internal successors, (32), 4 states have internal predecessors, (32), 2 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2021-11-19 05:09:03,650 INFO L276 IsEmpty]: Start isEmpty. Operand 829 states and 1099 transitions. [2021-11-19 05:09:03,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-19 05:09:03,651 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:09:03,651 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:09:03,652 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-19 05:09:03,652 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-19 05:09:03,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:09:03,652 INFO L85 PathProgramCache]: Analyzing trace with hash 1906062941, now seen corresponding path program 1 times [2021-11-19 05:09:03,653 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:09:03,653 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158759748] [2021-11-19 05:09:03,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:09:03,653 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:09:03,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:03,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:09:03,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:03,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 05:09:03,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:03,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-19 05:09:03,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:03,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-11-19 05:09:03,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:03,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:09:03,967 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:09:03,967 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158759748] [2021-11-19 05:09:03,967 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158759748] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:09:03,967 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:09:03,968 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-19 05:09:03,968 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541433542] [2021-11-19 05:09:03,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:09:03,969 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-19 05:09:03,969 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:09:03,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-19 05:09:03,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-11-19 05:09:03,970 INFO L87 Difference]: Start difference. First operand 829 states and 1099 transitions. Second operand has 10 states, 10 states have (on average 3.3) internal successors, (33), 6 states have internal predecessors, (33), 4 states have call successors, (8), 7 states have call predecessors, (8), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2021-11-19 05:09:05,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:09:05,430 INFO L93 Difference]: Finished difference Result 874 states and 1141 transitions. [2021-11-19 05:09:05,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-19 05:09:05,431 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.3) internal successors, (33), 6 states have internal predecessors, (33), 4 states have call successors, (8), 7 states have call predecessors, (8), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 45 [2021-11-19 05:09:05,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:09:05,440 INFO L225 Difference]: With dead ends: 874 [2021-11-19 05:09:05,440 INFO L226 Difference]: Without dead ends: 874 [2021-11-19 05:09:05,440 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=84, Invalid=188, Unknown=0, NotChecked=0, Total=272 [2021-11-19 05:09:05,441 INFO L933 BasicCegarLoop]: 450 mSDtfsCounter, 1047 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 944 mSolverCounterSat, 386 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1059 SdHoareTripleChecker+Valid, 688 SdHoareTripleChecker+Invalid, 1330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 386 IncrementalHoareTripleChecker+Valid, 944 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-19 05:09:05,442 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1059 Valid, 688 Invalid, 1330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [386 Valid, 944 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-19 05:09:05,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 874 states. [2021-11-19 05:09:05,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 874 to 820. [2021-11-19 05:09:05,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 820 states, 647 states have (on average 1.2982998454404946) internal successors, (840), 661 states have internal predecessors, (840), 95 states have call successors, (95), 68 states have call predecessors, (95), 77 states have return successors, (143), 92 states have call predecessors, (143), 87 states have call successors, (143) [2021-11-19 05:09:05,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 820 states to 820 states and 1078 transitions. [2021-11-19 05:09:05,473 INFO L78 Accepts]: Start accepts. Automaton has 820 states and 1078 transitions. Word has length 45 [2021-11-19 05:09:05,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:09:05,474 INFO L470 AbstractCegarLoop]: Abstraction has 820 states and 1078 transitions. [2021-11-19 05:09:05,474 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.3) internal successors, (33), 6 states have internal predecessors, (33), 4 states have call successors, (8), 7 states have call predecessors, (8), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2021-11-19 05:09:05,474 INFO L276 IsEmpty]: Start isEmpty. Operand 820 states and 1078 transitions. [2021-11-19 05:09:05,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-19 05:09:05,476 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:09:05,476 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:09:05,476 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-19 05:09:05,476 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-19 05:09:05,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:09:05,477 INFO L85 PathProgramCache]: Analyzing trace with hash 1924856002, now seen corresponding path program 1 times [2021-11-19 05:09:05,477 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:09:05,477 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772064488] [2021-11-19 05:09:05,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:09:05,477 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:09:05,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:05,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:09:05,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:05,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 05:09:05,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:05,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-19 05:09:05,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:05,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-11-19 05:09:05,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:05,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:09:05,647 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:09:05,648 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772064488] [2021-11-19 05:09:05,648 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772064488] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:09:05,648 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:09:05,648 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-19 05:09:05,648 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169982980] [2021-11-19 05:09:05,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:09:05,649 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 05:09:05,649 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:09:05,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 05:09:05,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-11-19 05:09:05,650 INFO L87 Difference]: Start difference. First operand 820 states and 1078 transitions. Second operand has 8 states, 8 states have (on average 4.5) internal successors, (36), 4 states have internal predecessors, (36), 3 states have call successors, (9), 6 states have call predecessors, (9), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-19 05:09:06,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:09:06,925 INFO L93 Difference]: Finished difference Result 580 states and 730 transitions. [2021-11-19 05:09:06,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-19 05:09:06,926 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 4 states have internal predecessors, (36), 3 states have call successors, (9), 6 states have call predecessors, (9), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 49 [2021-11-19 05:09:06,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:09:06,929 INFO L225 Difference]: With dead ends: 580 [2021-11-19 05:09:06,929 INFO L226 Difference]: Without dead ends: 580 [2021-11-19 05:09:06,929 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2021-11-19 05:09:06,930 INFO L933 BasicCegarLoop]: 380 mSDtfsCounter, 534 mSDsluCounter, 380 mSDsCounter, 0 mSdLazyCounter, 1150 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 541 SdHoareTripleChecker+Valid, 760 SdHoareTripleChecker+Invalid, 1258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 1150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-19 05:09:06,931 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [541 Valid, 760 Invalid, 1258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 1150 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-19 05:09:06,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2021-11-19 05:09:06,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 528. [2021-11-19 05:09:06,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 528 states, 416 states have (on average 1.2740384615384615) internal successors, (530), 427 states have internal predecessors, (530), 62 states have call successors, (62), 43 states have call predecessors, (62), 49 states have return successors, (75), 59 states have call predecessors, (75), 54 states have call successors, (75) [2021-11-19 05:09:06,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 528 states to 528 states and 667 transitions. [2021-11-19 05:09:06,948 INFO L78 Accepts]: Start accepts. Automaton has 528 states and 667 transitions. Word has length 49 [2021-11-19 05:09:06,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:09:06,948 INFO L470 AbstractCegarLoop]: Abstraction has 528 states and 667 transitions. [2021-11-19 05:09:06,949 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 4 states have internal predecessors, (36), 3 states have call successors, (9), 6 states have call predecessors, (9), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-19 05:09:06,949 INFO L276 IsEmpty]: Start isEmpty. Operand 528 states and 667 transitions. [2021-11-19 05:09:06,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-19 05:09:06,950 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:09:06,950 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:09:06,951 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-19 05:09:06,951 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-19 05:09:06,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:09:06,952 INFO L85 PathProgramCache]: Analyzing trace with hash -6834350, now seen corresponding path program 1 times [2021-11-19 05:09:06,952 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:09:06,952 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875262199] [2021-11-19 05:09:06,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:09:06,952 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:09:06,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:07,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:09:07,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:07,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 05:09:07,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:07,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-19 05:09:07,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:07,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-19 05:09:07,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:07,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 05:09:07,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:07,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-11-19 05:09:07,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:07,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:09:07,133 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:09:07,133 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875262199] [2021-11-19 05:09:07,133 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875262199] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:09:07,133 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:09:07,133 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-19 05:09:07,133 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015781327] [2021-11-19 05:09:07,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:09:07,134 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 05:09:07,134 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:09:07,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 05:09:07,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-19 05:09:07,136 INFO L87 Difference]: Start difference. First operand 528 states and 667 transitions. Second operand has 8 states, 8 states have (on average 4.75) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (11), 7 states have call predecessors, (11), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2021-11-19 05:09:07,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:09:07,914 INFO L93 Difference]: Finished difference Result 569 states and 720 transitions. [2021-11-19 05:09:07,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-19 05:09:07,915 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (11), 7 states have call predecessors, (11), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 55 [2021-11-19 05:09:07,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:09:07,919 INFO L225 Difference]: With dead ends: 569 [2021-11-19 05:09:07,919 INFO L226 Difference]: Without dead ends: 569 [2021-11-19 05:09:07,919 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2021-11-19 05:09:07,920 INFO L933 BasicCegarLoop]: 336 mSDtfsCounter, 573 mSDsluCounter, 422 mSDsCounter, 0 mSdLazyCounter, 506 mSolverCounterSat, 233 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 578 SdHoareTripleChecker+Valid, 758 SdHoareTripleChecker+Invalid, 739 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 233 IncrementalHoareTripleChecker+Valid, 506 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-19 05:09:07,920 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [578 Valid, 758 Invalid, 739 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [233 Valid, 506 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-19 05:09:07,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 569 states. [2021-11-19 05:09:07,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 569 to 542. [2021-11-19 05:09:07,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 542 states, 429 states have (on average 1.275058275058275) internal successors, (547), 440 states have internal predecessors, (547), 62 states have call successors, (62), 43 states have call predecessors, (62), 50 states have return successors, (78), 59 states have call predecessors, (78), 54 states have call successors, (78) [2021-11-19 05:09:07,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 542 states to 542 states and 687 transitions. [2021-11-19 05:09:07,938 INFO L78 Accepts]: Start accepts. Automaton has 542 states and 687 transitions. Word has length 55 [2021-11-19 05:09:07,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:09:07,938 INFO L470 AbstractCegarLoop]: Abstraction has 542 states and 687 transitions. [2021-11-19 05:09:07,938 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (11), 7 states have call predecessors, (11), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2021-11-19 05:09:07,939 INFO L276 IsEmpty]: Start isEmpty. Operand 542 states and 687 transitions. [2021-11-19 05:09:07,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-19 05:09:07,940 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:09:07,940 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:09:07,941 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-19 05:09:07,941 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-19 05:09:07,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:09:07,941 INFO L85 PathProgramCache]: Analyzing trace with hash -2114913751, now seen corresponding path program 1 times [2021-11-19 05:09:07,942 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:09:07,942 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473865114] [2021-11-19 05:09:07,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:09:07,942 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:09:07,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:08,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:09:08,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:08,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 05:09:08,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:08,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-19 05:09:08,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:08,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-19 05:09:08,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:08,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-19 05:09:08,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:08,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:09:08,151 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:09:08,152 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473865114] [2021-11-19 05:09:08,152 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473865114] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:09:08,152 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:09:08,152 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-19 05:09:08,152 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391899324] [2021-11-19 05:09:08,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:09:08,153 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-19 05:09:08,153 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:09:08,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-19 05:09:08,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-11-19 05:09:08,154 INFO L87 Difference]: Start difference. First operand 542 states and 687 transitions. Second operand has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 7 states have internal predecessors, (40), 4 states have call successors, (7), 7 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2021-11-19 05:09:09,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:09:09,866 INFO L93 Difference]: Finished difference Result 714 states and 903 transitions. [2021-11-19 05:09:09,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-19 05:09:09,866 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 7 states have internal predecessors, (40), 4 states have call successors, (7), 7 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) Word has length 52 [2021-11-19 05:09:09,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:09:09,871 INFO L225 Difference]: With dead ends: 714 [2021-11-19 05:09:09,871 INFO L226 Difference]: Without dead ends: 714 [2021-11-19 05:09:09,871 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=161, Invalid=489, Unknown=0, NotChecked=0, Total=650 [2021-11-19 05:09:09,872 INFO L933 BasicCegarLoop]: 433 mSDtfsCounter, 970 mSDsluCounter, 627 mSDsCounter, 0 mSdLazyCounter, 1474 mSolverCounterSat, 394 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 972 SdHoareTripleChecker+Valid, 1060 SdHoareTripleChecker+Invalid, 1868 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 394 IncrementalHoareTripleChecker+Valid, 1474 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-11-19 05:09:09,872 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [972 Valid, 1060 Invalid, 1868 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [394 Valid, 1474 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-11-19 05:09:09,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 714 states. [2021-11-19 05:09:09,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 714 to 571. [2021-11-19 05:09:09,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 571 states, 452 states have (on average 1.2676991150442478) internal successors, (573), 464 states have internal predecessors, (573), 64 states have call successors, (64), 44 states have call predecessors, (64), 54 states have return successors, (83), 63 states have call predecessors, (83), 56 states have call successors, (83) [2021-11-19 05:09:09,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 720 transitions. [2021-11-19 05:09:09,894 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 720 transitions. Word has length 52 [2021-11-19 05:09:09,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:09:09,895 INFO L470 AbstractCegarLoop]: Abstraction has 571 states and 720 transitions. [2021-11-19 05:09:09,895 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 7 states have internal predecessors, (40), 4 states have call successors, (7), 7 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2021-11-19 05:09:09,895 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 720 transitions. [2021-11-19 05:09:09,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-19 05:09:09,897 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:09:09,897 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:09:09,897 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-19 05:09:09,897 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-19 05:09:09,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:09:09,898 INFO L85 PathProgramCache]: Analyzing trace with hash -632991762, now seen corresponding path program 1 times [2021-11-19 05:09:09,898 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:09:09,898 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943259322] [2021-11-19 05:09:09,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:09:09,899 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:09:09,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:10,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:09:10,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:10,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 05:09:10,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:10,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-19 05:09:10,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:10,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-19 05:09:10,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:10,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-19 05:09:10,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:10,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:09:10,153 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:09:10,153 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943259322] [2021-11-19 05:09:10,153 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943259322] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:09:10,154 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:09:10,154 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-19 05:09:10,154 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923200290] [2021-11-19 05:09:10,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:09:10,155 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-19 05:09:10,155 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:09:10,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-19 05:09:10,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-11-19 05:09:10,156 INFO L87 Difference]: Start difference. First operand 571 states and 720 transitions. Second operand has 10 states, 10 states have (on average 4.2) internal successors, (42), 5 states have internal predecessors, (42), 3 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-19 05:09:11,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:09:11,293 INFO L93 Difference]: Finished difference Result 638 states and 811 transitions. [2021-11-19 05:09:11,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-19 05:09:11,294 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.2) internal successors, (42), 5 states have internal predecessors, (42), 3 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) Word has length 54 [2021-11-19 05:09:11,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:09:11,297 INFO L225 Difference]: With dead ends: 638 [2021-11-19 05:09:11,298 INFO L226 Difference]: Without dead ends: 638 [2021-11-19 05:09:11,298 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2021-11-19 05:09:11,299 INFO L933 BasicCegarLoop]: 317 mSDtfsCounter, 919 mSDsluCounter, 381 mSDsCounter, 0 mSdLazyCounter, 589 mSolverCounterSat, 277 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 933 SdHoareTripleChecker+Valid, 698 SdHoareTripleChecker+Invalid, 866 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 277 IncrementalHoareTripleChecker+Valid, 589 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-19 05:09:11,299 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [933 Valid, 698 Invalid, 866 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [277 Valid, 589 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-19 05:09:11,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 638 states. [2021-11-19 05:09:11,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 638 to 583. [2021-11-19 05:09:11,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 583 states, 464 states have (on average 1.271551724137931) internal successors, (590), 476 states have internal predecessors, (590), 64 states have call successors, (64), 44 states have call predecessors, (64), 54 states have return successors, (83), 63 states have call predecessors, (83), 56 states have call successors, (83) [2021-11-19 05:09:11,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 583 states to 583 states and 737 transitions. [2021-11-19 05:09:11,318 INFO L78 Accepts]: Start accepts. Automaton has 583 states and 737 transitions. Word has length 54 [2021-11-19 05:09:11,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:09:11,318 INFO L470 AbstractCegarLoop]: Abstraction has 583 states and 737 transitions. [2021-11-19 05:09:11,319 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.2) internal successors, (42), 5 states have internal predecessors, (42), 3 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-19 05:09:11,319 INFO L276 IsEmpty]: Start isEmpty. Operand 583 states and 737 transitions. [2021-11-19 05:09:11,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-19 05:09:11,320 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:09:11,321 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:09:11,321 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-19 05:09:11,321 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-19 05:09:11,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:09:11,321 INFO L85 PathProgramCache]: Analyzing trace with hash 2073627632, now seen corresponding path program 1 times [2021-11-19 05:09:11,322 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:09:11,322 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217124004] [2021-11-19 05:09:11,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:09:11,322 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:09:11,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:11,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:09:11,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:11,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 05:09:11,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:11,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-19 05:09:11,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:11,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-19 05:09:11,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:11,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-19 05:09:11,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:11,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:09:11,582 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:09:11,582 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217124004] [2021-11-19 05:09:11,582 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217124004] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:09:11,582 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:09:11,583 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-19 05:09:11,583 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934638426] [2021-11-19 05:09:11,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:09:11,583 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-19 05:09:11,584 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:09:11,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-19 05:09:11,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2021-11-19 05:09:11,584 INFO L87 Difference]: Start difference. First operand 583 states and 737 transitions. Second operand has 13 states, 13 states have (on average 3.230769230769231) internal successors, (42), 8 states have internal predecessors, (42), 4 states have call successors, (7), 7 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2021-11-19 05:09:12,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:09:12,845 INFO L93 Difference]: Finished difference Result 611 states and 769 transitions. [2021-11-19 05:09:12,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-19 05:09:12,846 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.230769230769231) internal successors, (42), 8 states have internal predecessors, (42), 4 states have call successors, (7), 7 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) Word has length 54 [2021-11-19 05:09:12,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:09:12,849 INFO L225 Difference]: With dead ends: 611 [2021-11-19 05:09:12,849 INFO L226 Difference]: Without dead ends: 611 [2021-11-19 05:09:12,850 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=123, Invalid=383, Unknown=0, NotChecked=0, Total=506 [2021-11-19 05:09:12,851 INFO L933 BasicCegarLoop]: 320 mSDtfsCounter, 677 mSDsluCounter, 580 mSDsCounter, 0 mSdLazyCounter, 1184 mSolverCounterSat, 206 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 685 SdHoareTripleChecker+Valid, 900 SdHoareTripleChecker+Invalid, 1390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 206 IncrementalHoareTripleChecker+Valid, 1184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-19 05:09:12,851 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [685 Valid, 900 Invalid, 1390 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [206 Valid, 1184 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-19 05:09:12,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 611 states. [2021-11-19 05:09:12,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 611 to 564. [2021-11-19 05:09:12,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 564 states, 447 states have (on average 1.2662192393736018) internal successors, (566), 459 states have internal predecessors, (566), 64 states have call successors, (64), 44 states have call predecessors, (64), 52 states have return successors, (81), 61 states have call predecessors, (81), 56 states have call successors, (81) [2021-11-19 05:09:12,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 564 states to 564 states and 711 transitions. [2021-11-19 05:09:12,876 INFO L78 Accepts]: Start accepts. Automaton has 564 states and 711 transitions. Word has length 54 [2021-11-19 05:09:12,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:09:12,877 INFO L470 AbstractCegarLoop]: Abstraction has 564 states and 711 transitions. [2021-11-19 05:09:12,877 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.230769230769231) internal successors, (42), 8 states have internal predecessors, (42), 4 states have call successors, (7), 7 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2021-11-19 05:09:12,877 INFO L276 IsEmpty]: Start isEmpty. Operand 564 states and 711 transitions. [2021-11-19 05:09:12,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-19 05:09:12,882 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:09:12,882 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:09:12,883 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-19 05:09:12,883 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-19 05:09:12,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:09:12,883 INFO L85 PathProgramCache]: Analyzing trace with hash -2078060306, now seen corresponding path program 1 times [2021-11-19 05:09:12,883 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:09:12,884 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180504430] [2021-11-19 05:09:12,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:09:12,884 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:09:12,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:12,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:09:12,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:13,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 05:09:13,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:13,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-19 05:09:13,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:13,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-19 05:09:13,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:13,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-19 05:09:13,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:13,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:09:13,095 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:09:13,095 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180504430] [2021-11-19 05:09:13,095 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180504430] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:09:13,095 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:09:13,095 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-19 05:09:13,095 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461757929] [2021-11-19 05:09:13,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:09:13,097 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 05:09:13,097 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:09:13,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 05:09:13,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-19 05:09:13,099 INFO L87 Difference]: Start difference. First operand 564 states and 711 transitions. Second operand has 8 states, 8 states have (on average 5.25) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2021-11-19 05:09:14,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:09:14,026 INFO L93 Difference]: Finished difference Result 666 states and 840 transitions. [2021-11-19 05:09:14,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 05:09:14,027 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 54 [2021-11-19 05:09:14,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:09:14,029 INFO L225 Difference]: With dead ends: 666 [2021-11-19 05:09:14,030 INFO L226 Difference]: Without dead ends: 666 [2021-11-19 05:09:14,030 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-11-19 05:09:14,031 INFO L933 BasicCegarLoop]: 421 mSDtfsCounter, 327 mSDsluCounter, 374 mSDsCounter, 0 mSdLazyCounter, 937 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 336 SdHoareTripleChecker+Valid, 795 SdHoareTripleChecker+Invalid, 1007 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 937 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-19 05:09:14,031 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [336 Valid, 795 Invalid, 1007 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 937 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-19 05:09:14,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 666 states. [2021-11-19 05:09:14,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 666 to 580. [2021-11-19 05:09:14,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 580 states, 461 states have (on average 1.2668112798264641) internal successors, (584), 473 states have internal predecessors, (584), 64 states have call successors, (64), 45 states have call predecessors, (64), 54 states have return successors, (85), 62 states have call predecessors, (85), 57 states have call successors, (85) [2021-11-19 05:09:14,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 580 states to 580 states and 733 transitions. [2021-11-19 05:09:14,049 INFO L78 Accepts]: Start accepts. Automaton has 580 states and 733 transitions. Word has length 54 [2021-11-19 05:09:14,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:09:14,049 INFO L470 AbstractCegarLoop]: Abstraction has 580 states and 733 transitions. [2021-11-19 05:09:14,050 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2021-11-19 05:09:14,050 INFO L276 IsEmpty]: Start isEmpty. Operand 580 states and 733 transitions. [2021-11-19 05:09:14,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-19 05:09:14,051 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:09:14,051 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:09:14,052 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-19 05:09:14,052 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-19 05:09:14,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:09:14,052 INFO L85 PathProgramCache]: Analyzing trace with hash 2007283295, now seen corresponding path program 1 times [2021-11-19 05:09:14,053 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:09:14,053 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35096244] [2021-11-19 05:09:14,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:09:14,053 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:09:14,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:14,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:09:14,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:14,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 05:09:14,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:14,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-19 05:09:14,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:14,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-19 05:09:14,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:14,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-19 05:09:14,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:14,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 05:09:14,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:14,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:09:14,308 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:09:14,308 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35096244] [2021-11-19 05:09:14,308 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35096244] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:09:14,309 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:09:14,309 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-19 05:09:14,309 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593476506] [2021-11-19 05:09:14,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:09:14,309 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-19 05:09:14,310 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:09:14,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-19 05:09:14,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-11-19 05:09:14,311 INFO L87 Difference]: Start difference. First operand 580 states and 733 transitions. Second operand has 10 states, 10 states have (on average 4.5) internal successors, (45), 4 states have internal predecessors, (45), 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) [2021-11-19 05:09:15,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:09:15,295 INFO L93 Difference]: Finished difference Result 544 states and 676 transitions. [2021-11-19 05:09:15,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-19 05:09:15,296 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.5) internal successors, (45), 4 states have internal predecessors, (45), 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 61 [2021-11-19 05:09:15,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:09:15,299 INFO L225 Difference]: With dead ends: 544 [2021-11-19 05:09:15,299 INFO L226 Difference]: Without dead ends: 544 [2021-11-19 05:09:15,299 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-11-19 05:09:15,300 INFO L933 BasicCegarLoop]: 338 mSDtfsCounter, 252 mSDsluCounter, 843 mSDsCounter, 0 mSdLazyCounter, 1015 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 1181 SdHoareTripleChecker+Invalid, 1096 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 1015 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-19 05:09:15,300 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [258 Valid, 1181 Invalid, 1096 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 1015 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-19 05:09:15,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 544 states. [2021-11-19 05:09:15,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 544 to 506. [2021-11-19 05:09:15,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 506 states, 398 states have (on average 1.2487437185929648) internal successors, (497), 406 states have internal predecessors, (497), 60 states have call successors, (60), 43 states have call predecessors, (60), 47 states have return successors, (70), 57 states have call predecessors, (70), 54 states have call successors, (70) [2021-11-19 05:09:15,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 506 states to 506 states and 627 transitions. [2021-11-19 05:09:15,316 INFO L78 Accepts]: Start accepts. Automaton has 506 states and 627 transitions. Word has length 61 [2021-11-19 05:09:15,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:09:15,316 INFO L470 AbstractCegarLoop]: Abstraction has 506 states and 627 transitions. [2021-11-19 05:09:15,316 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.5) internal successors, (45), 4 states have internal predecessors, (45), 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) [2021-11-19 05:09:15,317 INFO L276 IsEmpty]: Start isEmpty. Operand 506 states and 627 transitions. [2021-11-19 05:09:15,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-19 05:09:15,318 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:09:15,318 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:09:15,318 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-19 05:09:15,319 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-19 05:09:15,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:09:15,319 INFO L85 PathProgramCache]: Analyzing trace with hash 456516591, now seen corresponding path program 1 times [2021-11-19 05:09:15,319 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:09:15,319 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914826972] [2021-11-19 05:09:15,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:09:15,320 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:09:15,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:15,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:09:15,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:15,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 05:09:15,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:15,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-19 05:09:15,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:15,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-19 05:09:15,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:15,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-19 05:09:15,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:15,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:09:15,549 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:09:15,549 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914826972] [2021-11-19 05:09:15,549 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914826972] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:09:15,549 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:09:15,549 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-19 05:09:15,549 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125372384] [2021-11-19 05:09:15,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:09:15,551 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-19 05:09:15,552 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:09:15,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-19 05:09:15,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2021-11-19 05:09:15,553 INFO L87 Difference]: Start difference. First operand 506 states and 627 transitions. Second operand has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 6 states have internal predecessors, (43), 2 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2021-11-19 05:09:16,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:09:16,569 INFO L93 Difference]: Finished difference Result 568 states and 708 transitions. [2021-11-19 05:09:16,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-19 05:09:16,570 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 6 states have internal predecessors, (43), 2 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) Word has length 55 [2021-11-19 05:09:16,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:09:16,573 INFO L225 Difference]: With dead ends: 568 [2021-11-19 05:09:16,574 INFO L226 Difference]: Without dead ends: 567 [2021-11-19 05:09:16,574 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2021-11-19 05:09:16,575 INFO L933 BasicCegarLoop]: 336 mSDtfsCounter, 382 mSDsluCounter, 1430 mSDsCounter, 0 mSdLazyCounter, 1376 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 388 SdHoareTripleChecker+Valid, 1766 SdHoareTripleChecker+Invalid, 1525 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 1376 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-19 05:09:16,575 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [388 Valid, 1766 Invalid, 1525 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [149 Valid, 1376 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-19 05:09:16,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 567 states. [2021-11-19 05:09:16,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 567 to 523. [2021-11-19 05:09:16,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 523 states, 413 states have (on average 1.2397094430992737) internal successors, (512), 421 states have internal predecessors, (512), 60 states have call successors, (60), 43 states have call predecessors, (60), 49 states have return successors, (77), 59 states have call predecessors, (77), 54 states have call successors, (77) [2021-11-19 05:09:16,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 523 states to 523 states and 649 transitions. [2021-11-19 05:09:16,601 INFO L78 Accepts]: Start accepts. Automaton has 523 states and 649 transitions. Word has length 55 [2021-11-19 05:09:16,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:09:16,602 INFO L470 AbstractCegarLoop]: Abstraction has 523 states and 649 transitions. [2021-11-19 05:09:16,602 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 6 states have internal predecessors, (43), 2 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2021-11-19 05:09:16,602 INFO L276 IsEmpty]: Start isEmpty. Operand 523 states and 649 transitions. [2021-11-19 05:09:16,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-19 05:09:16,604 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:09:16,604 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:09:16,604 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-19 05:09:16,604 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-19 05:09:16,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:09:16,605 INFO L85 PathProgramCache]: Analyzing trace with hash 456793421, now seen corresponding path program 1 times [2021-11-19 05:09:16,605 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:09:16,605 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889969431] [2021-11-19 05:09:16,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:09:16,606 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:09:16,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:16,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:09:16,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:16,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 05:09:16,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:16,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-19 05:09:16,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:16,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-19 05:09:16,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:16,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-19 05:09:16,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:16,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:09:16,838 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:09:16,838 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889969431] [2021-11-19 05:09:16,838 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889969431] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:09:16,838 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:09:16,839 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-19 05:09:16,839 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859779940] [2021-11-19 05:09:16,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:09:16,839 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-19 05:09:16,839 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:09:16,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-19 05:09:16,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2021-11-19 05:09:16,840 INFO L87 Difference]: Start difference. First operand 523 states and 649 transitions. Second operand has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 6 states have internal predecessors, (43), 2 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2021-11-19 05:09:17,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:09:17,800 INFO L93 Difference]: Finished difference Result 563 states and 696 transitions. [2021-11-19 05:09:17,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-19 05:09:17,801 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 6 states have internal predecessors, (43), 2 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) Word has length 55 [2021-11-19 05:09:17,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:09:17,804 INFO L225 Difference]: With dead ends: 563 [2021-11-19 05:09:17,804 INFO L226 Difference]: Without dead ends: 551 [2021-11-19 05:09:17,805 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2021-11-19 05:09:17,805 INFO L933 BasicCegarLoop]: 340 mSDtfsCounter, 332 mSDsluCounter, 1087 mSDsCounter, 0 mSdLazyCounter, 1605 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 335 SdHoareTripleChecker+Valid, 1427 SdHoareTripleChecker+Invalid, 1723 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 1605 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-19 05:09:17,806 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [335 Valid, 1427 Invalid, 1723 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 1605 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-19 05:09:17,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 551 states. [2021-11-19 05:09:17,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 551 to 520. [2021-11-19 05:09:17,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 520 states, 410 states have (on average 1.2414634146341463) internal successors, (509), 419 states have internal predecessors, (509), 60 states have call successors, (60), 43 states have call predecessors, (60), 49 states have return successors, (76), 58 states have call predecessors, (76), 54 states have call successors, (76) [2021-11-19 05:09:17,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 520 states to 520 states and 645 transitions. [2021-11-19 05:09:17,821 INFO L78 Accepts]: Start accepts. Automaton has 520 states and 645 transitions. Word has length 55 [2021-11-19 05:09:17,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:09:17,822 INFO L470 AbstractCegarLoop]: Abstraction has 520 states and 645 transitions. [2021-11-19 05:09:17,822 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 6 states have internal predecessors, (43), 2 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2021-11-19 05:09:17,822 INFO L276 IsEmpty]: Start isEmpty. Operand 520 states and 645 transitions. [2021-11-19 05:09:17,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-19 05:09:17,824 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:09:17,824 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:09:17,824 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-19 05:09:17,825 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-19 05:09:17,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:09:17,825 INFO L85 PathProgramCache]: Analyzing trace with hash 1713148089, now seen corresponding path program 1 times [2021-11-19 05:09:17,825 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:09:17,826 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128350454] [2021-11-19 05:09:17,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:09:17,826 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:09:17,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:17,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:09:17,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:17,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 05:09:17,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:17,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-19 05:09:17,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:17,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-19 05:09:17,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:18,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-19 05:09:18,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:18,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-11-19 05:09:18,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:18,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:09:18,041 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:09:18,041 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128350454] [2021-11-19 05:09:18,041 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128350454] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:09:18,041 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:09:18,041 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-19 05:09:18,041 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885727136] [2021-11-19 05:09:18,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:09:18,042 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-19 05:09:18,042 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:09:18,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-19 05:09:18,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-11-19 05:09:18,043 INFO L87 Difference]: Start difference. First operand 520 states and 645 transitions. Second operand has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (8), 8 states have call predecessors, (8), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-19 05:09:19,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:09:19,303 INFO L93 Difference]: Finished difference Result 563 states and 695 transitions. [2021-11-19 05:09:19,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-19 05:09:19,304 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (8), 8 states have call predecessors, (8), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 57 [2021-11-19 05:09:19,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:09:19,307 INFO L225 Difference]: With dead ends: 563 [2021-11-19 05:09:19,307 INFO L226 Difference]: Without dead ends: 523 [2021-11-19 05:09:19,307 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2021-11-19 05:09:19,308 INFO L933 BasicCegarLoop]: 319 mSDtfsCounter, 289 mSDsluCounter, 678 mSDsCounter, 0 mSdLazyCounter, 1842 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 300 SdHoareTripleChecker+Valid, 997 SdHoareTripleChecker+Invalid, 1918 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 1842 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-11-19 05:09:19,308 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [300 Valid, 997 Invalid, 1918 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 1842 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-11-19 05:09:19,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 523 states. [2021-11-19 05:09:19,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 523 to 496. [2021-11-19 05:09:19,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 496 states, 392 states have (on average 1.2372448979591837) internal successors, (485), 400 states have internal predecessors, (485), 58 states have call successors, (58), 41 states have call predecessors, (58), 45 states have return successors, (72), 55 states have call predecessors, (72), 52 states have call successors, (72) [2021-11-19 05:09:19,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 496 states to 496 states and 615 transitions. [2021-11-19 05:09:19,326 INFO L78 Accepts]: Start accepts. Automaton has 496 states and 615 transitions. Word has length 57 [2021-11-19 05:09:19,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:09:19,327 INFO L470 AbstractCegarLoop]: Abstraction has 496 states and 615 transitions. [2021-11-19 05:09:19,327 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (8), 8 states have call predecessors, (8), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-19 05:09:19,327 INFO L276 IsEmpty]: Start isEmpty. Operand 496 states and 615 transitions. [2021-11-19 05:09:19,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-19 05:09:19,329 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:09:19,329 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:09:19,329 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-19 05:09:19,329 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-19 05:09:19,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:09:19,330 INFO L85 PathProgramCache]: Analyzing trace with hash 471512753, now seen corresponding path program 1 times [2021-11-19 05:09:19,330 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:09:19,330 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540230486] [2021-11-19 05:09:19,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:09:19,331 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:09:19,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:19,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:09:19,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:19,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 05:09:19,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:19,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-19 05:09:19,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:19,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-19 05:09:19,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:19,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-19 05:09:19,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:19,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:09:19,607 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:09:19,607 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540230486] [2021-11-19 05:09:19,608 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [540230486] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:09:19,608 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:09:19,608 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-19 05:09:19,608 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172584501] [2021-11-19 05:09:19,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:09:19,609 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-19 05:09:19,609 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:09:19,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-19 05:09:19,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-19 05:09:19,614 INFO L87 Difference]: Start difference. First operand 496 states and 615 transitions. Second operand has 10 states, 10 states have (on average 4.4) internal successors, (44), 5 states have internal predecessors, (44), 3 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-19 05:09:20,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:09:20,635 INFO L93 Difference]: Finished difference Result 527 states and 650 transitions. [2021-11-19 05:09:20,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-19 05:09:20,636 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.4) internal successors, (44), 5 states have internal predecessors, (44), 3 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) Word has length 56 [2021-11-19 05:09:20,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:09:20,638 INFO L225 Difference]: With dead ends: 527 [2021-11-19 05:09:20,638 INFO L226 Difference]: Without dead ends: 513 [2021-11-19 05:09:20,638 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2021-11-19 05:09:20,639 INFO L933 BasicCegarLoop]: 317 mSDtfsCounter, 745 mSDsluCounter, 370 mSDsCounter, 0 mSdLazyCounter, 866 mSolverCounterSat, 210 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 757 SdHoareTripleChecker+Valid, 687 SdHoareTripleChecker+Invalid, 1076 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 210 IncrementalHoareTripleChecker+Valid, 866 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-19 05:09:20,639 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [757 Valid, 687 Invalid, 1076 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [210 Valid, 866 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-19 05:09:20,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 513 states. [2021-11-19 05:09:20,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 513 to 478. [2021-11-19 05:09:20,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 478 states, 377 states have (on average 1.2413793103448276) internal successors, (468), 384 states have internal predecessors, (468), 57 states have call successors, (57), 41 states have call predecessors, (57), 43 states have return successors, (65), 53 states have call predecessors, (65), 51 states have call successors, (65) [2021-11-19 05:09:20,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 478 states to 478 states and 590 transitions. [2021-11-19 05:09:20,653 INFO L78 Accepts]: Start accepts. Automaton has 478 states and 590 transitions. Word has length 56 [2021-11-19 05:09:20,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:09:20,654 INFO L470 AbstractCegarLoop]: Abstraction has 478 states and 590 transitions. [2021-11-19 05:09:20,654 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.4) internal successors, (44), 5 states have internal predecessors, (44), 3 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-19 05:09:20,654 INFO L276 IsEmpty]: Start isEmpty. Operand 478 states and 590 transitions. [2021-11-19 05:09:20,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-19 05:09:20,655 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:09:20,656 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:09:20,656 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-19 05:09:20,656 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-19 05:09:20,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:09:20,657 INFO L85 PathProgramCache]: Analyzing trace with hash -70909626, now seen corresponding path program 1 times [2021-11-19 05:09:20,657 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:09:20,657 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975375604] [2021-11-19 05:09:20,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:09:20,657 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:09:20,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:20,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:09:20,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:20,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 05:09:20,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:20,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-19 05:09:20,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:20,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-19 05:09:20,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:20,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-19 05:09:20,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:20,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 05:09:20,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:20,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-19 05:09:20,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:20,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:09:20,884 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:09:20,884 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975375604] [2021-11-19 05:09:20,884 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975375604] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:09:20,885 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:09:20,885 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-19 05:09:20,885 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535656105] [2021-11-19 05:09:20,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:09:20,886 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-19 05:09:20,886 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:09:20,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-19 05:09:20,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-11-19 05:09:20,887 INFO L87 Difference]: Start difference. First operand 478 states and 590 transitions. Second operand has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 6 states have internal predecessors, (47), 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) [2021-11-19 05:09:21,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:09:21,828 INFO L93 Difference]: Finished difference Result 511 states and 631 transitions. [2021-11-19 05:09:21,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-19 05:09:21,829 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 6 states have internal predecessors, (47), 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 65 [2021-11-19 05:09:21,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:09:21,832 INFO L225 Difference]: With dead ends: 511 [2021-11-19 05:09:21,832 INFO L226 Difference]: Without dead ends: 511 [2021-11-19 05:09:21,837 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=106, Invalid=314, Unknown=0, NotChecked=0, Total=420 [2021-11-19 05:09:21,839 INFO L933 BasicCegarLoop]: 309 mSDtfsCounter, 738 mSDsluCounter, 564 mSDsCounter, 0 mSdLazyCounter, 803 mSolverCounterSat, 237 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 749 SdHoareTripleChecker+Valid, 873 SdHoareTripleChecker+Invalid, 1040 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 237 IncrementalHoareTripleChecker+Valid, 803 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-19 05:09:21,839 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [749 Valid, 873 Invalid, 1040 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [237 Valid, 803 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-19 05:09:21,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 511 states. [2021-11-19 05:09:21,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 511 to 478. [2021-11-19 05:09:21,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 478 states, 377 states have (on average 1.2360742705570291) internal successors, (466), 384 states have internal predecessors, (466), 57 states have call successors, (57), 41 states have call predecessors, (57), 43 states have return successors, (65), 53 states have call predecessors, (65), 51 states have call successors, (65) [2021-11-19 05:09:21,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 478 states to 478 states and 588 transitions. [2021-11-19 05:09:21,860 INFO L78 Accepts]: Start accepts. Automaton has 478 states and 588 transitions. Word has length 65 [2021-11-19 05:09:21,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:09:21,862 INFO L470 AbstractCegarLoop]: Abstraction has 478 states and 588 transitions. [2021-11-19 05:09:21,863 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 6 states have internal predecessors, (47), 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) [2021-11-19 05:09:21,863 INFO L276 IsEmpty]: Start isEmpty. Operand 478 states and 588 transitions. [2021-11-19 05:09:21,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-19 05:09:21,864 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:09:21,865 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:09:21,865 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-19 05:09:21,865 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-19 05:09:21,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:09:21,866 INFO L85 PathProgramCache]: Analyzing trace with hash -876554703, now seen corresponding path program 1 times [2021-11-19 05:09:21,866 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:09:21,866 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983566509] [2021-11-19 05:09:21,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:09:21,866 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:09:21,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:21,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:09:21,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:21,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 05:09:21,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:22,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-19 05:09:22,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:22,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-19 05:09:22,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:22,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-19 05:09:22,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:22,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:09:22,098 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:09:22,099 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983566509] [2021-11-19 05:09:22,099 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983566509] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:09:22,099 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:09:22,099 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-19 05:09:22,099 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424326360] [2021-11-19 05:09:22,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:09:22,100 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-19 05:09:22,100 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:09:22,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-19 05:09:22,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2021-11-19 05:09:22,102 INFO L87 Difference]: Start difference. First operand 478 states and 588 transitions. Second operand has 14 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 7 states have internal predecessors, (48), 2 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2021-11-19 05:09:23,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:09:23,164 INFO L93 Difference]: Finished difference Result 519 states and 636 transitions. [2021-11-19 05:09:23,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-19 05:09:23,165 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 7 states have internal predecessors, (48), 2 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) Word has length 60 [2021-11-19 05:09:23,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:09:23,168 INFO L225 Difference]: With dead ends: 519 [2021-11-19 05:09:23,168 INFO L226 Difference]: Without dead ends: 501 [2021-11-19 05:09:23,168 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2021-11-19 05:09:23,169 INFO L933 BasicCegarLoop]: 324 mSDtfsCounter, 443 mSDsluCounter, 1231 mSDsCounter, 0 mSdLazyCounter, 1820 mSolverCounterSat, 177 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 446 SdHoareTripleChecker+Valid, 1555 SdHoareTripleChecker+Invalid, 1997 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 177 IncrementalHoareTripleChecker+Valid, 1820 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-19 05:09:23,169 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [446 Valid, 1555 Invalid, 1997 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [177 Valid, 1820 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-19 05:09:23,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 501 states. [2021-11-19 05:09:23,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 501 to 474. [2021-11-19 05:09:23,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 474 states, 374 states have (on average 1.2352941176470589) internal successors, (462), 381 states have internal predecessors, (462), 56 states have call successors, (56), 41 states have call predecessors, (56), 43 states have return successors, (64), 52 states have call predecessors, (64), 50 states have call successors, (64) [2021-11-19 05:09:23,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 474 states to 474 states and 582 transitions. [2021-11-19 05:09:23,182 INFO L78 Accepts]: Start accepts. Automaton has 474 states and 582 transitions. Word has length 60 [2021-11-19 05:09:23,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:09:23,182 INFO L470 AbstractCegarLoop]: Abstraction has 474 states and 582 transitions. [2021-11-19 05:09:23,182 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 7 states have internal predecessors, (48), 2 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2021-11-19 05:09:23,183 INFO L276 IsEmpty]: Start isEmpty. Operand 474 states and 582 transitions. [2021-11-19 05:09:23,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-19 05:09:23,184 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:09:23,184 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:09:23,184 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-11-19 05:09:23,185 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-19 05:09:23,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:09:23,187 INFO L85 PathProgramCache]: Analyzing trace with hash -863080833, now seen corresponding path program 1 times [2021-11-19 05:09:23,187 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:09:23,187 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521342580] [2021-11-19 05:09:23,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:09:23,187 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:09:23,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:23,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:09:23,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:23,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 05:09:23,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:23,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-19 05:09:23,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:23,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-19 05:09:23,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:23,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-19 05:09:23,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:23,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 05:09:23,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:23,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-19 05:09:23,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:23,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:09:23,432 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:09:23,433 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521342580] [2021-11-19 05:09:23,433 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521342580] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:09:23,433 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:09:23,433 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-19 05:09:23,433 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295380282] [2021-11-19 05:09:23,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:09:23,435 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-19 05:09:23,435 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:09:23,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-19 05:09:23,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-11-19 05:09:23,436 INFO L87 Difference]: Start difference. First operand 474 states and 582 transitions. Second operand has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 5 states have internal predecessors, (50), 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) [2021-11-19 05:09:24,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:09:24,349 INFO L93 Difference]: Finished difference Result 526 states and 647 transitions. [2021-11-19 05:09:24,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-19 05:09:24,350 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 5 states have internal predecessors, (50), 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 68 [2021-11-19 05:09:24,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:09:24,352 INFO L225 Difference]: With dead ends: 526 [2021-11-19 05:09:24,353 INFO L226 Difference]: Without dead ends: 526 [2021-11-19 05:09:24,353 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2021-11-19 05:09:24,354 INFO L933 BasicCegarLoop]: 327 mSDtfsCounter, 444 mSDsluCounter, 1066 mSDsCounter, 0 mSdLazyCounter, 1129 mSolverCounterSat, 163 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 452 SdHoareTripleChecker+Valid, 1393 SdHoareTripleChecker+Invalid, 1292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 163 IncrementalHoareTripleChecker+Valid, 1129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-19 05:09:24,354 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [452 Valid, 1393 Invalid, 1292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [163 Valid, 1129 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-19 05:09:24,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526 states. [2021-11-19 05:09:24,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526 to 474. [2021-11-19 05:09:24,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 474 states, 374 states have (on average 1.2299465240641712) internal successors, (460), 381 states have internal predecessors, (460), 56 states have call successors, (56), 41 states have call predecessors, (56), 43 states have return successors, (64), 52 states have call predecessors, (64), 50 states have call successors, (64) [2021-11-19 05:09:24,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 474 states to 474 states and 580 transitions. [2021-11-19 05:09:24,368 INFO L78 Accepts]: Start accepts. Automaton has 474 states and 580 transitions. Word has length 68 [2021-11-19 05:09:24,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:09:24,368 INFO L470 AbstractCegarLoop]: Abstraction has 474 states and 580 transitions. [2021-11-19 05:09:24,368 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 5 states have internal predecessors, (50), 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) [2021-11-19 05:09:24,368 INFO L276 IsEmpty]: Start isEmpty. Operand 474 states and 580 transitions. [2021-11-19 05:09:24,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-19 05:09:24,370 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:09:24,370 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:09:24,370 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-11-19 05:09:24,370 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-19 05:09:24,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:09:24,371 INFO L85 PathProgramCache]: Analyzing trace with hash -1815591607, now seen corresponding path program 1 times [2021-11-19 05:09:24,371 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:09:24,371 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393327019] [2021-11-19 05:09:24,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:09:24,371 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:09:24,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:24,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:09:24,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:24,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 05:09:24,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:24,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-19 05:09:24,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:24,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-19 05:09:24,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:24,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-19 05:09:24,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:24,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:09:24,587 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:09:24,588 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393327019] [2021-11-19 05:09:24,588 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393327019] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:09:24,588 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:09:24,588 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-19 05:09:24,588 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892887696] [2021-11-19 05:09:24,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:09:24,589 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-19 05:09:24,589 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:09:24,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-19 05:09:24,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2021-11-19 05:09:24,590 INFO L87 Difference]: Start difference. First operand 474 states and 580 transitions. Second operand has 14 states, 14 states have (on average 3.5) internal successors, (49), 7 states have internal predecessors, (49), 2 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2021-11-19 05:09:25,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:09:25,666 INFO L93 Difference]: Finished difference Result 515 states and 628 transitions. [2021-11-19 05:09:25,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-19 05:09:25,666 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.5) internal successors, (49), 7 states have internal predecessors, (49), 2 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) Word has length 61 [2021-11-19 05:09:25,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:09:25,668 INFO L225 Difference]: With dead ends: 515 [2021-11-19 05:09:25,668 INFO L226 Difference]: Without dead ends: 496 [2021-11-19 05:09:25,669 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2021-11-19 05:09:25,669 INFO L933 BasicCegarLoop]: 319 mSDtfsCounter, 272 mSDsluCounter, 1168 mSDsCounter, 0 mSdLazyCounter, 1790 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 275 SdHoareTripleChecker+Valid, 1487 SdHoareTripleChecker+Invalid, 1888 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 1790 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-19 05:09:25,670 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [275 Valid, 1487 Invalid, 1888 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 1790 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-19 05:09:25,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 496 states. [2021-11-19 05:09:25,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 496 to 469. [2021-11-19 05:09:25,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 469 states, 370 states have (on average 1.2297297297297298) internal successors, (455), 377 states have internal predecessors, (455), 55 states have call successors, (55), 41 states have call predecessors, (55), 43 states have return successors, (63), 51 states have call predecessors, (63), 49 states have call successors, (63) [2021-11-19 05:09:25,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 469 states to 469 states and 573 transitions. [2021-11-19 05:09:25,682 INFO L78 Accepts]: Start accepts. Automaton has 469 states and 573 transitions. Word has length 61 [2021-11-19 05:09:25,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:09:25,683 INFO L470 AbstractCegarLoop]: Abstraction has 469 states and 573 transitions. [2021-11-19 05:09:25,683 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.5) internal successors, (49), 7 states have internal predecessors, (49), 2 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2021-11-19 05:09:25,683 INFO L276 IsEmpty]: Start isEmpty. Operand 469 states and 573 transitions. [2021-11-19 05:09:25,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-19 05:09:25,684 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:09:25,684 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:09:25,685 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-11-19 05:09:25,685 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-19 05:09:25,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:09:25,685 INFO L85 PathProgramCache]: Analyzing trace with hash 1549264219, now seen corresponding path program 1 times [2021-11-19 05:09:25,685 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:09:25,686 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089406510] [2021-11-19 05:09:25,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:09:25,686 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:09:25,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:25,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:09:25,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:25,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 05:09:25,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:25,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-19 05:09:25,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:25,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-19 05:09:25,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:25,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-19 05:09:25,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:25,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:09:25,912 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:09:25,912 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089406510] [2021-11-19 05:09:25,912 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089406510] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:09:25,913 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:09:25,913 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-19 05:09:25,913 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129019384] [2021-11-19 05:09:25,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:09:25,913 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-19 05:09:25,914 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:09:25,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-19 05:09:25,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2021-11-19 05:09:25,914 INFO L87 Difference]: Start difference. First operand 469 states and 573 transitions. Second operand has 14 states, 14 states have (on average 3.5) internal successors, (49), 7 states have internal predecessors, (49), 2 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2021-11-19 05:09:26,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:09:26,922 INFO L93 Difference]: Finished difference Result 510 states and 621 transitions. [2021-11-19 05:09:26,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-19 05:09:26,923 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.5) internal successors, (49), 7 states have internal predecessors, (49), 2 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) Word has length 61 [2021-11-19 05:09:26,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:09:26,925 INFO L225 Difference]: With dead ends: 510 [2021-11-19 05:09:26,925 INFO L226 Difference]: Without dead ends: 492 [2021-11-19 05:09:26,925 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2021-11-19 05:09:26,926 INFO L933 BasicCegarLoop]: 313 mSDtfsCounter, 349 mSDsluCounter, 1140 mSDsCounter, 0 mSdLazyCounter, 1708 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 352 SdHoareTripleChecker+Valid, 1453 SdHoareTripleChecker+Invalid, 1840 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 1708 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-19 05:09:26,926 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [352 Valid, 1453 Invalid, 1840 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 1708 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-19 05:09:26,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492 states. [2021-11-19 05:09:26,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492 to 465. [2021-11-19 05:09:26,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 465 states, 367 states have (on average 1.228882833787466) internal successors, (451), 374 states have internal predecessors, (451), 54 states have call successors, (54), 41 states have call predecessors, (54), 43 states have return successors, (62), 50 states have call predecessors, (62), 48 states have call successors, (62) [2021-11-19 05:09:26,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 465 states to 465 states and 567 transitions. [2021-11-19 05:09:26,939 INFO L78 Accepts]: Start accepts. Automaton has 465 states and 567 transitions. Word has length 61 [2021-11-19 05:09:26,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:09:26,939 INFO L470 AbstractCegarLoop]: Abstraction has 465 states and 567 transitions. [2021-11-19 05:09:26,939 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.5) internal successors, (49), 7 states have internal predecessors, (49), 2 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2021-11-19 05:09:26,940 INFO L276 IsEmpty]: Start isEmpty. Operand 465 states and 567 transitions. [2021-11-19 05:09:26,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-19 05:09:26,941 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:09:26,941 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:09:26,941 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-11-19 05:09:26,942 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-19 05:09:26,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:09:26,942 INFO L85 PathProgramCache]: Analyzing trace with hash 634046865, now seen corresponding path program 1 times [2021-11-19 05:09:26,942 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:09:26,942 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957998816] [2021-11-19 05:09:26,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:09:26,943 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:09:26,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:27,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:09:27,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:27,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 05:09:27,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:27,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-19 05:09:27,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:27,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-19 05:09:27,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:27,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-19 05:09:27,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:27,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 05:09:27,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:27,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-19 05:09:27,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:27,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:09:27,116 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:09:27,117 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957998816] [2021-11-19 05:09:27,117 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957998816] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:09:27,117 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:09:27,117 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-19 05:09:27,117 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040714095] [2021-11-19 05:09:27,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:09:27,118 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 05:09:27,119 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:09:27,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 05:09:27,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-11-19 05:09:27,119 INFO L87 Difference]: Start difference. First operand 465 states and 567 transitions. Second operand has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 3 states have internal predecessors, (52), 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) [2021-11-19 05:09:27,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:09:27,953 INFO L93 Difference]: Finished difference Result 636 states and 773 transitions. [2021-11-19 05:09:27,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-19 05:09:27,953 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 3 states have internal predecessors, (52), 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 70 [2021-11-19 05:09:27,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:09:27,956 INFO L225 Difference]: With dead ends: 636 [2021-11-19 05:09:27,956 INFO L226 Difference]: Without dead ends: 636 [2021-11-19 05:09:27,957 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2021-11-19 05:09:27,957 INFO L933 BasicCegarLoop]: 366 mSDtfsCounter, 522 mSDsluCounter, 442 mSDsCounter, 0 mSdLazyCounter, 821 mSolverCounterSat, 159 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 533 SdHoareTripleChecker+Valid, 808 SdHoareTripleChecker+Invalid, 980 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 159 IncrementalHoareTripleChecker+Valid, 821 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-19 05:09:27,958 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [533 Valid, 808 Invalid, 980 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [159 Valid, 821 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-19 05:09:27,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 636 states. [2021-11-19 05:09:27,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 636 to 586. [2021-11-19 05:09:27,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 586 states, 460 states have (on average 1.2195652173913043) internal successors, (561), 469 states have internal predecessors, (561), 67 states have call successors, (67), 51 states have call predecessors, (67), 58 states have return successors, (87), 66 states have call predecessors, (87), 62 states have call successors, (87) [2021-11-19 05:09:27,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 586 states to 586 states and 715 transitions. [2021-11-19 05:09:27,973 INFO L78 Accepts]: Start accepts. Automaton has 586 states and 715 transitions. Word has length 70 [2021-11-19 05:09:27,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:09:27,974 INFO L470 AbstractCegarLoop]: Abstraction has 586 states and 715 transitions. [2021-11-19 05:09:27,974 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 3 states have internal predecessors, (52), 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) [2021-11-19 05:09:27,974 INFO L276 IsEmpty]: Start isEmpty. Operand 586 states and 715 transitions. [2021-11-19 05:09:27,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-19 05:09:27,976 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:09:27,976 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:09:27,976 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-11-19 05:09:27,976 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-19 05:09:27,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:09:27,977 INFO L85 PathProgramCache]: Analyzing trace with hash 2014934282, now seen corresponding path program 1 times [2021-11-19 05:09:27,977 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:09:27,977 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730687940] [2021-11-19 05:09:27,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:09:27,977 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:09:27,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:28,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:09:28,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:28,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 05:09:28,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:28,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-19 05:09:28,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:28,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-19 05:09:28,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:28,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-19 05:09:28,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:28,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:09:28,202 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:09:28,202 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730687940] [2021-11-19 05:09:28,202 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730687940] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:09:28,203 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:09:28,203 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-19 05:09:28,203 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531801754] [2021-11-19 05:09:28,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:09:28,203 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-19 05:09:28,204 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:09:28,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-19 05:09:28,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2021-11-19 05:09:28,204 INFO L87 Difference]: Start difference. First operand 586 states and 715 transitions. Second operand has 14 states, 14 states have (on average 3.7857142857142856) internal successors, (53), 7 states have internal predecessors, (53), 2 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2021-11-19 05:09:29,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:09:29,125 INFO L93 Difference]: Finished difference Result 627 states and 764 transitions. [2021-11-19 05:09:29,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-19 05:09:29,125 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.7857142857142856) internal successors, (53), 7 states have internal predecessors, (53), 2 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) Word has length 65 [2021-11-19 05:09:29,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:09:29,128 INFO L225 Difference]: With dead ends: 627 [2021-11-19 05:09:29,128 INFO L226 Difference]: Without dead ends: 587 [2021-11-19 05:09:29,129 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2021-11-19 05:09:29,129 INFO L933 BasicCegarLoop]: 305 mSDtfsCounter, 266 mSDsluCounter, 1134 mSDsCounter, 0 mSdLazyCounter, 1775 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 271 SdHoareTripleChecker+Valid, 1439 SdHoareTripleChecker+Invalid, 1867 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 1775 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-19 05:09:29,129 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [271 Valid, 1439 Invalid, 1867 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 1775 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-19 05:09:29,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 587 states. [2021-11-19 05:09:29,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 587 to 560. [2021-11-19 05:09:29,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 560 states, 439 states have (on average 1.2186788154897494) internal successors, (535), 448 states have internal predecessors, (535), 64 states have call successors, (64), 49 states have call predecessors, (64), 56 states have return successors, (84), 63 states have call predecessors, (84), 59 states have call successors, (84) [2021-11-19 05:09:29,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 683 transitions. [2021-11-19 05:09:29,145 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 683 transitions. Word has length 65 [2021-11-19 05:09:29,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:09:29,145 INFO L470 AbstractCegarLoop]: Abstraction has 560 states and 683 transitions. [2021-11-19 05:09:29,145 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.7857142857142856) internal successors, (53), 7 states have internal predecessors, (53), 2 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2021-11-19 05:09:29,145 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 683 transitions. [2021-11-19 05:09:29,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-19 05:09:29,147 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:09:29,147 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:09:29,148 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-11-19 05:09:29,148 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-19 05:09:29,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:09:29,148 INFO L85 PathProgramCache]: Analyzing trace with hash 1554016619, now seen corresponding path program 1 times [2021-11-19 05:09:29,148 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:09:29,149 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247289742] [2021-11-19 05:09:29,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:09:29,149 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:09:29,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:29,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:09:29,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:29,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 05:09:29,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:29,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-19 05:09:29,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:29,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-19 05:09:29,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:29,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-19 05:09:29,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:29,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 05:09:29,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:29,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-19 05:09:29,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:29,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-11-19 05:09:29,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:29,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:09:29,376 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:09:29,377 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247289742] [2021-11-19 05:09:29,377 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [247289742] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:09:29,377 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:09:29,377 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-19 05:09:29,377 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483660955] [2021-11-19 05:09:29,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:09:29,378 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-19 05:09:29,378 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:09:29,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-19 05:09:29,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-11-19 05:09:29,379 INFO L87 Difference]: Start difference. First operand 560 states and 683 transitions. Second operand has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 5 states have internal predecessors, (59), 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) [2021-11-19 05:09:30,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:09:30,441 INFO L93 Difference]: Finished difference Result 575 states and 695 transitions. [2021-11-19 05:09:30,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-19 05:09:30,441 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 5 states have internal predecessors, (59), 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 79 [2021-11-19 05:09:30,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:09:30,446 INFO L225 Difference]: With dead ends: 575 [2021-11-19 05:09:30,446 INFO L226 Difference]: Without dead ends: 575 [2021-11-19 05:09:30,447 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=110, Invalid=232, Unknown=0, NotChecked=0, Total=342 [2021-11-19 05:09:30,447 INFO L933 BasicCegarLoop]: 401 mSDtfsCounter, 404 mSDsluCounter, 647 mSDsCounter, 0 mSdLazyCounter, 1145 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 411 SdHoareTripleChecker+Valid, 1048 SdHoareTripleChecker+Invalid, 1275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 1145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-19 05:09:30,448 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [411 Valid, 1048 Invalid, 1275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 1145 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-19 05:09:30,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2021-11-19 05:09:30,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 542. [2021-11-19 05:09:30,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 542 states, 425 states have (on average 1.2188235294117646) internal successors, (518), 433 states have internal predecessors, (518), 62 states have call successors, (62), 49 states have call predecessors, (62), 54 states have return successors, (73), 60 states have call predecessors, (73), 57 states have call successors, (73) [2021-11-19 05:09:30,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 542 states to 542 states and 653 transitions. [2021-11-19 05:09:30,462 INFO L78 Accepts]: Start accepts. Automaton has 542 states and 653 transitions. Word has length 79 [2021-11-19 05:09:30,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:09:30,463 INFO L470 AbstractCegarLoop]: Abstraction has 542 states and 653 transitions. [2021-11-19 05:09:30,463 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 5 states have internal predecessors, (59), 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) [2021-11-19 05:09:30,463 INFO L276 IsEmpty]: Start isEmpty. Operand 542 states and 653 transitions. [2021-11-19 05:09:30,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-19 05:09:30,465 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:09:30,465 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:09:30,465 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-11-19 05:09:30,465 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-19 05:09:30,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:09:30,466 INFO L85 PathProgramCache]: Analyzing trace with hash -478221177, now seen corresponding path program 1 times [2021-11-19 05:09:30,466 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:09:30,466 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910557272] [2021-11-19 05:09:30,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:09:30,466 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:09:30,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:30,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:09:30,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:30,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 05:09:30,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:30,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-19 05:09:30,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:30,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-11-19 05:09:30,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:30,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-19 05:09:30,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:30,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 05:09:30,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:30,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-19 05:09:30,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:30,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-11-19 05:09:30,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:30,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 05:09:30,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:30,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:09:30,731 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:09:30,731 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910557272] [2021-11-19 05:09:30,731 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910557272] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:09:30,732 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:09:30,732 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-19 05:09:30,732 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53626526] [2021-11-19 05:09:30,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:09:30,732 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-19 05:09:30,733 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:09:30,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-19 05:09:30,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2021-11-19 05:09:30,733 INFO L87 Difference]: Start difference. First operand 542 states and 653 transitions. Second operand has 14 states, 14 states have (on average 4.071428571428571) internal successors, (57), 5 states have internal predecessors, (57), 2 states have call successors, (14), 10 states have call predecessors, (14), 2 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2021-11-19 05:09:31,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:09:31,770 INFO L93 Difference]: Finished difference Result 651 states and 821 transitions. [2021-11-19 05:09:31,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-19 05:09:31,771 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.071428571428571) internal successors, (57), 5 states have internal predecessors, (57), 2 states have call successors, (14), 10 states have call predecessors, (14), 2 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) Word has length 80 [2021-11-19 05:09:31,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:09:31,774 INFO L225 Difference]: With dead ends: 651 [2021-11-19 05:09:31,774 INFO L226 Difference]: Without dead ends: 651 [2021-11-19 05:09:31,774 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=115, Invalid=391, Unknown=0, NotChecked=0, Total=506 [2021-11-19 05:09:31,775 INFO L933 BasicCegarLoop]: 351 mSDtfsCounter, 545 mSDsluCounter, 1218 mSDsCounter, 0 mSdLazyCounter, 1088 mSolverCounterSat, 195 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 556 SdHoareTripleChecker+Valid, 1569 SdHoareTripleChecker+Invalid, 1283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 195 IncrementalHoareTripleChecker+Valid, 1088 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-19 05:09:31,775 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [556 Valid, 1569 Invalid, 1283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [195 Valid, 1088 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-19 05:09:31,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 651 states. [2021-11-19 05:09:31,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 651 to 506. [2021-11-19 05:09:31,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 506 states, 401 states have (on average 1.2194513715710724) internal successors, (489), 407 states have internal predecessors, (489), 55 states have call successors, (55), 43 states have call predecessors, (55), 49 states have return successors, (63), 56 states have call predecessors, (63), 51 states have call successors, (63) [2021-11-19 05:09:31,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 506 states to 506 states and 607 transitions. [2021-11-19 05:09:31,789 INFO L78 Accepts]: Start accepts. Automaton has 506 states and 607 transitions. Word has length 80 [2021-11-19 05:09:31,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:09:31,790 INFO L470 AbstractCegarLoop]: Abstraction has 506 states and 607 transitions. [2021-11-19 05:09:31,790 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.071428571428571) internal successors, (57), 5 states have internal predecessors, (57), 2 states have call successors, (14), 10 states have call predecessors, (14), 2 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2021-11-19 05:09:31,790 INFO L276 IsEmpty]: Start isEmpty. Operand 506 states and 607 transitions. [2021-11-19 05:09:31,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-19 05:09:31,792 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:09:31,792 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:09:31,792 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-11-19 05:09:31,792 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-19 05:09:31,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:09:31,793 INFO L85 PathProgramCache]: Analyzing trace with hash -998039197, now seen corresponding path program 1 times [2021-11-19 05:09:31,793 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:09:31,793 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953014573] [2021-11-19 05:09:31,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:09:31,793 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:09:31,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:31,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:09:31,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:31,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 05:09:31,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:31,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-19 05:09:31,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:31,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-19 05:09:31,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:32,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-19 05:09:32,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:32,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-19 05:09:32,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:32,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 05:09:32,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:32,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-19 05:09:32,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:32,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-11-19 05:09:32,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:32,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:09:32,114 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:09:32,114 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953014573] [2021-11-19 05:09:32,114 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953014573] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:09:32,114 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:09:32,114 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-11-19 05:09:32,115 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341222683] [2021-11-19 05:09:32,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:09:32,115 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-19 05:09:32,115 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:09:32,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-19 05:09:32,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2021-11-19 05:09:32,116 INFO L87 Difference]: Start difference. First operand 506 states and 607 transitions. Second operand has 16 states, 16 states have (on average 4.0625) internal successors, (65), 7 states have internal predecessors, (65), 3 states have call successors, (11), 9 states have call predecessors, (11), 3 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) [2021-11-19 05:09:33,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:09:33,042 INFO L93 Difference]: Finished difference Result 581 states and 696 transitions. [2021-11-19 05:09:33,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-19 05:09:33,043 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.0625) internal successors, (65), 7 states have internal predecessors, (65), 3 states have call successors, (11), 9 states have call predecessors, (11), 3 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) Word has length 85 [2021-11-19 05:09:33,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:09:33,045 INFO L225 Difference]: With dead ends: 581 [2021-11-19 05:09:33,045 INFO L226 Difference]: Without dead ends: 563 [2021-11-19 05:09:33,046 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=101, Invalid=499, Unknown=0, NotChecked=0, Total=600 [2021-11-19 05:09:33,046 INFO L933 BasicCegarLoop]: 302 mSDtfsCounter, 576 mSDsluCounter, 1496 mSDsCounter, 0 mSdLazyCounter, 1368 mSolverCounterSat, 214 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 584 SdHoareTripleChecker+Valid, 1798 SdHoareTripleChecker+Invalid, 1582 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 214 IncrementalHoareTripleChecker+Valid, 1368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-19 05:09:33,047 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [584 Valid, 1798 Invalid, 1582 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [214 Valid, 1368 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-19 05:09:33,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2021-11-19 05:09:33,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 514. [2021-11-19 05:09:33,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 514 states, 408 states have (on average 1.2156862745098038) internal successors, (496), 414 states have internal predecessors, (496), 55 states have call successors, (55), 43 states have call predecessors, (55), 50 states have return successors, (66), 57 states have call predecessors, (66), 51 states have call successors, (66) [2021-11-19 05:09:33,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 514 states to 514 states and 617 transitions. [2021-11-19 05:09:33,060 INFO L78 Accepts]: Start accepts. Automaton has 514 states and 617 transitions. Word has length 85 [2021-11-19 05:09:33,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:09:33,060 INFO L470 AbstractCegarLoop]: Abstraction has 514 states and 617 transitions. [2021-11-19 05:09:33,060 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.0625) internal successors, (65), 7 states have internal predecessors, (65), 3 states have call successors, (11), 9 states have call predecessors, (11), 3 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) [2021-11-19 05:09:33,061 INFO L276 IsEmpty]: Start isEmpty. Operand 514 states and 617 transitions. [2021-11-19 05:09:33,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-19 05:09:33,062 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:09:33,063 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:09:33,063 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-11-19 05:09:33,063 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-19 05:09:33,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:09:33,063 INFO L85 PathProgramCache]: Analyzing trace with hash 2056891224, now seen corresponding path program 1 times [2021-11-19 05:09:33,064 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:09:33,064 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775975334] [2021-11-19 05:09:33,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:09:33,064 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:09:33,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:33,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:09:33,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:33,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 05:09:33,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:33,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-19 05:09:33,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:33,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-19 05:09:33,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:33,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-19 05:09:33,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:33,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-19 05:09:33,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:33,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-19 05:09:33,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:33,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:09:33,299 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:09:33,299 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775975334] [2021-11-19 05:09:33,299 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775975334] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:09:33,300 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:09:33,300 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-19 05:09:33,300 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87221035] [2021-11-19 05:09:33,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:09:33,301 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-19 05:09:33,301 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:09:33,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-19 05:09:33,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2021-11-19 05:09:33,302 INFO L87 Difference]: Start difference. First operand 514 states and 617 transitions. Second operand has 12 states, 12 states have (on average 5.333333333333333) internal successors, (64), 5 states have internal predecessors, (64), 5 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) [2021-11-19 05:09:34,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:09:34,443 INFO L93 Difference]: Finished difference Result 667 states and 781 transitions. [2021-11-19 05:09:34,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 05:09:34,443 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.333333333333333) internal successors, (64), 5 states have internal predecessors, (64), 5 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) Word has length 80 [2021-11-19 05:09:34,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:09:34,446 INFO L225 Difference]: With dead ends: 667 [2021-11-19 05:09:34,446 INFO L226 Difference]: Without dead ends: 667 [2021-11-19 05:09:34,446 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=124, Invalid=338, Unknown=0, NotChecked=0, Total=462 [2021-11-19 05:09:34,449 INFO L933 BasicCegarLoop]: 331 mSDtfsCounter, 1022 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 1034 mSolverCounterSat, 336 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1029 SdHoareTripleChecker+Valid, 556 SdHoareTripleChecker+Invalid, 1370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 336 IncrementalHoareTripleChecker+Valid, 1034 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-19 05:09:34,449 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1029 Valid, 556 Invalid, 1370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [336 Valid, 1034 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-19 05:09:34,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 667 states. [2021-11-19 05:09:34,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 667 to 635. [2021-11-19 05:09:34,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 635 states, 505 states have (on average 1.205940594059406) internal successors, (609), 513 states have internal predecessors, (609), 63 states have call successors, (63), 55 states have call predecessors, (63), 66 states have return successors, (77), 67 states have call predecessors, (77), 59 states have call successors, (77) [2021-11-19 05:09:34,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 635 states to 635 states and 749 transitions. [2021-11-19 05:09:34,473 INFO L78 Accepts]: Start accepts. Automaton has 635 states and 749 transitions. Word has length 80 [2021-11-19 05:09:34,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:09:34,475 INFO L470 AbstractCegarLoop]: Abstraction has 635 states and 749 transitions. [2021-11-19 05:09:34,476 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.333333333333333) internal successors, (64), 5 states have internal predecessors, (64), 5 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) [2021-11-19 05:09:34,476 INFO L276 IsEmpty]: Start isEmpty. Operand 635 states and 749 transitions. [2021-11-19 05:09:34,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-19 05:09:34,478 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:09:34,478 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:09:34,479 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-11-19 05:09:34,479 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-19 05:09:34,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:09:34,480 INFO L85 PathProgramCache]: Analyzing trace with hash -1814178751, now seen corresponding path program 1 times [2021-11-19 05:09:34,480 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:09:34,480 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879123611] [2021-11-19 05:09:34,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:09:34,480 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:09:34,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:34,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:09:34,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:34,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 05:09:34,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:34,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-19 05:09:34,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:34,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-19 05:09:34,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:34,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-19 05:09:34,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:34,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-19 05:09:34,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:34,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 05:09:34,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:34,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-19 05:09:34,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:34,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-11-19 05:09:34,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:34,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:09:34,819 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:09:34,819 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879123611] [2021-11-19 05:09:34,819 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879123611] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:09:34,819 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:09:34,819 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-11-19 05:09:34,819 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562765027] [2021-11-19 05:09:34,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:09:34,820 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-19 05:09:34,820 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:09:34,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-19 05:09:34,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2021-11-19 05:09:34,821 INFO L87 Difference]: Start difference. First operand 635 states and 749 transitions. Second operand has 16 states, 16 states have (on average 4.125) internal successors, (66), 7 states have internal predecessors, (66), 3 states have call successors, (11), 9 states have call predecessors, (11), 3 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) [2021-11-19 05:09:36,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:09:36,155 INFO L93 Difference]: Finished difference Result 682 states and 798 transitions. [2021-11-19 05:09:36,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-19 05:09:36,157 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.125) internal successors, (66), 7 states have internal predecessors, (66), 3 states have call successors, (11), 9 states have call predecessors, (11), 3 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) Word has length 86 [2021-11-19 05:09:36,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:09:36,159 INFO L225 Difference]: With dead ends: 682 [2021-11-19 05:09:36,160 INFO L226 Difference]: Without dead ends: 664 [2021-11-19 05:09:36,160 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2021-11-19 05:09:36,161 INFO L933 BasicCegarLoop]: 303 mSDtfsCounter, 201 mSDsluCounter, 1557 mSDsCounter, 0 mSdLazyCounter, 1964 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 1860 SdHoareTripleChecker+Invalid, 2032 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 1964 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-11-19 05:09:36,161 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [205 Valid, 1860 Invalid, 2032 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 1964 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-11-19 05:09:36,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 664 states. [2021-11-19 05:09:36,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 664 to 627. [2021-11-19 05:09:36,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 627 states, 498 states have (on average 1.2068273092369477) internal successors, (601), 506 states have internal predecessors, (601), 63 states have call successors, (63), 55 states have call predecessors, (63), 65 states have return successors, (75), 66 states have call predecessors, (75), 59 states have call successors, (75) [2021-11-19 05:09:36,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 627 states to 627 states and 739 transitions. [2021-11-19 05:09:36,178 INFO L78 Accepts]: Start accepts. Automaton has 627 states and 739 transitions. Word has length 86 [2021-11-19 05:09:36,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:09:36,178 INFO L470 AbstractCegarLoop]: Abstraction has 627 states and 739 transitions. [2021-11-19 05:09:36,179 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.125) internal successors, (66), 7 states have internal predecessors, (66), 3 states have call successors, (11), 9 states have call predecessors, (11), 3 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) [2021-11-19 05:09:36,179 INFO L276 IsEmpty]: Start isEmpty. Operand 627 states and 739 transitions. [2021-11-19 05:09:36,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-19 05:09:36,181 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:09:36,181 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:09:36,181 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-11-19 05:09:36,181 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-19 05:09:36,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:09:36,182 INFO L85 PathProgramCache]: Analyzing trace with hash -1760569352, now seen corresponding path program 1 times [2021-11-19 05:09:36,182 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:09:36,182 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050998410] [2021-11-19 05:09:36,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:09:36,183 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:09:36,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:36,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:09:36,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:36,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 05:09:36,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:36,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-19 05:09:36,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:36,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-19 05:09:36,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:36,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-19 05:09:36,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:36,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-19 05:09:36,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:36,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-11-19 05:09:36,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:36,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:09:36,401 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:09:36,402 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050998410] [2021-11-19 05:09:36,402 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050998410] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:09:36,402 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:09:36,402 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-19 05:09:36,402 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75914860] [2021-11-19 05:09:36,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:09:36,403 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-19 05:09:36,403 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:09:36,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-19 05:09:36,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-11-19 05:09:36,404 INFO L87 Difference]: Start difference. First operand 627 states and 739 transitions. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 3 states have internal predecessors, (65), 3 states have call successors, (9), 9 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-19 05:09:37,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:09:37,203 INFO L93 Difference]: Finished difference Result 634 states and 743 transitions. [2021-11-19 05:09:37,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-19 05:09:37,203 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 3 states have internal predecessors, (65), 3 states have call successors, (9), 9 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 81 [2021-11-19 05:09:37,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:09:37,205 INFO L225 Difference]: With dead ends: 634 [2021-11-19 05:09:37,206 INFO L226 Difference]: Without dead ends: 581 [2021-11-19 05:09:37,206 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2021-11-19 05:09:37,206 INFO L933 BasicCegarLoop]: 265 mSDtfsCounter, 535 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 908 mSolverCounterSat, 166 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 548 SdHoareTripleChecker+Valid, 460 SdHoareTripleChecker+Invalid, 1074 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 166 IncrementalHoareTripleChecker+Valid, 908 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-19 05:09:37,206 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [548 Valid, 460 Invalid, 1074 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [166 Valid, 908 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-19 05:09:37,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2021-11-19 05:09:37,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 579. [2021-11-19 05:09:37,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 579 states, 456 states have (on average 1.206140350877193) internal successors, (550), 464 states have internal predecessors, (550), 61 states have call successors, (61), 53 states have call predecessors, (61), 61 states have return successors, (71), 62 states have call predecessors, (71), 57 states have call successors, (71) [2021-11-19 05:09:37,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 579 states to 579 states and 682 transitions. [2021-11-19 05:09:37,221 INFO L78 Accepts]: Start accepts. Automaton has 579 states and 682 transitions. Word has length 81 [2021-11-19 05:09:37,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:09:37,222 INFO L470 AbstractCegarLoop]: Abstraction has 579 states and 682 transitions. [2021-11-19 05:09:37,222 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 3 states have internal predecessors, (65), 3 states have call successors, (9), 9 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-19 05:09:37,222 INFO L276 IsEmpty]: Start isEmpty. Operand 579 states and 682 transitions. [2021-11-19 05:09:37,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-11-19 05:09:37,224 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:09:37,224 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:09:37,224 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-11-19 05:09:37,225 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-19 05:09:37,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:09:37,225 INFO L85 PathProgramCache]: Analyzing trace with hash 1681688182, now seen corresponding path program 1 times [2021-11-19 05:09:37,225 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:09:37,226 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114465975] [2021-11-19 05:09:37,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:09:37,226 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:09:37,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:37,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:09:37,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:37,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 05:09:37,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:37,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-19 05:09:37,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:37,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-19 05:09:37,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:37,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-19 05:09:37,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:37,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-19 05:09:37,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:37,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-11-19 05:09:37,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:37,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-11-19 05:09:37,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:37,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:09:37,502 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:09:37,502 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114465975] [2021-11-19 05:09:37,502 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114465975] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:09:37,502 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:09:37,502 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-11-19 05:09:37,503 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72978948] [2021-11-19 05:09:37,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:09:37,505 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-19 05:09:37,505 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:09:37,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-19 05:09:37,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2021-11-19 05:09:37,506 INFO L87 Difference]: Start difference. First operand 579 states and 682 transitions. Second operand has 16 states, 16 states have (on average 4.5) internal successors, (72), 7 states have internal predecessors, (72), 2 states have call successors, (10), 9 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 1 states have call successors, (8) [2021-11-19 05:09:38,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:09:38,766 INFO L93 Difference]: Finished difference Result 580 states and 682 transitions. [2021-11-19 05:09:38,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 05:09:38,766 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.5) internal successors, (72), 7 states have internal predecessors, (72), 2 states have call successors, (10), 9 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 1 states have call successors, (8) Word has length 90 [2021-11-19 05:09:38,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:09:38,768 INFO L225 Difference]: With dead ends: 580 [2021-11-19 05:09:38,768 INFO L226 Difference]: Without dead ends: 495 [2021-11-19 05:09:38,768 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=81, Invalid=381, Unknown=0, NotChecked=0, Total=462 [2021-11-19 05:09:38,769 INFO L933 BasicCegarLoop]: 242 mSDtfsCounter, 320 mSDsluCounter, 455 mSDsCounter, 0 mSdLazyCounter, 2211 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 333 SdHoareTripleChecker+Valid, 697 SdHoareTripleChecker+Invalid, 2289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 2211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-19 05:09:38,769 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [333 Valid, 697 Invalid, 2289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 2211 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-19 05:09:38,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 495 states. [2021-11-19 05:09:38,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 495 to 493. [2021-11-19 05:09:38,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 493 states, 384 states have (on average 1.2083333333333333) internal successors, (464), 391 states have internal predecessors, (464), 54 states have call successors, (54), 47 states have call predecessors, (54), 54 states have return successors, (64), 55 states have call predecessors, (64), 51 states have call successors, (64) [2021-11-19 05:09:38,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 493 states to 493 states and 582 transitions. [2021-11-19 05:09:38,779 INFO L78 Accepts]: Start accepts. Automaton has 493 states and 582 transitions. Word has length 90 [2021-11-19 05:09:38,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:09:38,780 INFO L470 AbstractCegarLoop]: Abstraction has 493 states and 582 transitions. [2021-11-19 05:09:38,780 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.5) internal successors, (72), 7 states have internal predecessors, (72), 2 states have call successors, (10), 9 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 1 states have call successors, (8) [2021-11-19 05:09:38,780 INFO L276 IsEmpty]: Start isEmpty. Operand 493 states and 582 transitions. [2021-11-19 05:09:38,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-19 05:09:38,782 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:09:38,782 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:09:38,782 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-11-19 05:09:38,782 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-19 05:09:38,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:09:38,783 INFO L85 PathProgramCache]: Analyzing trace with hash 1266916623, now seen corresponding path program 1 times [2021-11-19 05:09:38,783 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:09:38,783 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636455742] [2021-11-19 05:09:38,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:09:38,784 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:09:38,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:38,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:09:38,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:38,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 05:09:38,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:38,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-19 05:09:38,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:38,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-19 05:09:38,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:38,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-19 05:09:38,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:38,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-19 05:09:39,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:39,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 05:09:39,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:39,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-19 05:09:39,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:39,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-11-19 05:09:39,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:39,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-11-19 05:09:39,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:39,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:09:39,037 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:09:39,037 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636455742] [2021-11-19 05:09:39,037 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636455742] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:09:39,037 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:09:39,037 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-19 05:09:39,038 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342302602] [2021-11-19 05:09:39,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:09:39,038 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-19 05:09:39,038 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:09:39,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-19 05:09:39,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2021-11-19 05:09:39,039 INFO L87 Difference]: Start difference. First operand 493 states and 582 transitions. Second operand has 14 states, 14 states have (on average 5.285714285714286) internal successors, (74), 5 states have internal predecessors, (74), 2 states have call successors, (12), 10 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2021-11-19 05:09:39,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:09:39,522 INFO L93 Difference]: Finished difference Result 491 states and 577 transitions. [2021-11-19 05:09:39,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-19 05:09:39,523 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.285714285714286) internal successors, (74), 5 states have internal predecessors, (74), 2 states have call successors, (12), 10 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) Word has length 96 [2021-11-19 05:09:39,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:09:39,524 INFO L225 Difference]: With dead ends: 491 [2021-11-19 05:09:39,524 INFO L226 Difference]: Without dead ends: 489 [2021-11-19 05:09:39,525 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2021-11-19 05:09:39,526 INFO L933 BasicCegarLoop]: 195 mSDtfsCounter, 160 mSDsluCounter, 831 mSDsCounter, 0 mSdLazyCounter, 638 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 1026 SdHoareTripleChecker+Invalid, 704 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 638 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-19 05:09:39,526 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [160 Valid, 1026 Invalid, 704 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 638 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-19 05:09:39,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 489 states. [2021-11-19 05:09:39,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 489 to 436. [2021-11-19 05:09:39,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 436 states, 340 states have (on average 1.1970588235294117) internal successors, (407), 346 states have internal predecessors, (407), 47 states have call successors, (47), 42 states have call predecessors, (47), 48 states have return successors, (55), 48 states have call predecessors, (55), 44 states have call successors, (55) [2021-11-19 05:09:39,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 436 states to 436 states and 509 transitions. [2021-11-19 05:09:39,538 INFO L78 Accepts]: Start accepts. Automaton has 436 states and 509 transitions. Word has length 96 [2021-11-19 05:09:39,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:09:39,539 INFO L470 AbstractCegarLoop]: Abstraction has 436 states and 509 transitions. [2021-11-19 05:09:39,539 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.285714285714286) internal successors, (74), 5 states have internal predecessors, (74), 2 states have call successors, (12), 10 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2021-11-19 05:09:39,539 INFO L276 IsEmpty]: Start isEmpty. Operand 436 states and 509 transitions. [2021-11-19 05:09:39,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-19 05:09:39,541 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:09:39,541 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:09:39,541 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-11-19 05:09:39,541 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-19 05:09:39,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:09:39,542 INFO L85 PathProgramCache]: Analyzing trace with hash -596239754, now seen corresponding path program 1 times [2021-11-19 05:09:39,542 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:09:39,542 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733453772] [2021-11-19 05:09:39,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:09:39,543 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:09:39,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:39,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:09:39,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:39,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 05:09:39,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:39,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-19 05:09:39,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:39,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-19 05:09:39,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:39,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-19 05:09:39,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:39,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-19 05:09:39,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:39,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 05:09:39,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:39,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-19 05:09:39,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:39,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-11-19 05:09:39,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:39,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-11-19 05:09:39,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:39,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:09:39,846 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:09:39,846 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733453772] [2021-11-19 05:09:39,846 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733453772] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:09:39,846 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:09:39,846 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-19 05:09:39,847 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163542618] [2021-11-19 05:09:39,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:09:39,847 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-19 05:09:39,847 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:09:39,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-19 05:09:39,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2021-11-19 05:09:39,848 INFO L87 Difference]: Start difference. First operand 436 states and 509 transitions. Second operand has 15 states, 15 states have (on average 4.933333333333334) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (12), 10 states have call predecessors, (12), 2 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2021-11-19 05:09:40,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:09:40,777 INFO L93 Difference]: Finished difference Result 833 states and 977 transitions. [2021-11-19 05:09:40,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-19 05:09:40,778 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.933333333333334) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (12), 10 states have call predecessors, (12), 2 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) Word has length 96 [2021-11-19 05:09:40,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:09:40,781 INFO L225 Difference]: With dead ends: 833 [2021-11-19 05:09:40,781 INFO L226 Difference]: Without dead ends: 791 [2021-11-19 05:09:40,781 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=167, Invalid=589, Unknown=0, NotChecked=0, Total=756 [2021-11-19 05:09:40,782 INFO L933 BasicCegarLoop]: 342 mSDtfsCounter, 411 mSDsluCounter, 1317 mSDsCounter, 0 mSdLazyCounter, 1071 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 420 SdHoareTripleChecker+Valid, 1659 SdHoareTripleChecker+Invalid, 1207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 1071 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-19 05:09:40,782 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [420 Valid, 1659 Invalid, 1207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 1071 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-19 05:09:40,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 791 states. [2021-11-19 05:09:40,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 791 to 416. [2021-11-19 05:09:40,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 416 states, 324 states have (on average 1.1975308641975309) internal successors, (388), 329 states have internal predecessors, (388), 44 states have call successors, (44), 41 states have call predecessors, (44), 47 states have return successors, (52), 45 states have call predecessors, (52), 41 states have call successors, (52) [2021-11-19 05:09:40,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 484 transitions. [2021-11-19 05:09:40,796 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 484 transitions. Word has length 96 [2021-11-19 05:09:40,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:09:40,796 INFO L470 AbstractCegarLoop]: Abstraction has 416 states and 484 transitions. [2021-11-19 05:09:40,796 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.933333333333334) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (12), 10 states have call predecessors, (12), 2 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2021-11-19 05:09:40,797 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 484 transitions. [2021-11-19 05:09:40,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-11-19 05:09:40,798 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:09:40,799 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:09:40,799 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-11-19 05:09:40,799 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-19 05:09:40,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:09:40,799 INFO L85 PathProgramCache]: Analyzing trace with hash -693188859, now seen corresponding path program 1 times [2021-11-19 05:09:40,800 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:09:40,800 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539530877] [2021-11-19 05:09:40,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:09:40,800 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:09:40,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:40,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:09:40,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:40,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 05:09:40,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:40,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-19 05:09:40,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:41,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-19 05:09:41,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:41,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-19 05:09:41,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:41,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-19 05:09:41,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:41,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-19 05:09:41,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:41,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 05:09:41,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:41,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-19 05:09:41,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:41,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-19 05:09:41,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:41,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 05:09:41,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:41,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-11-19 05:09:41,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:41,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:09:41,242 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:09:41,243 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539530877] [2021-11-19 05:09:41,243 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539530877] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:09:41,243 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:09:41,243 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-11-19 05:09:41,244 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013284069] [2021-11-19 05:09:41,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:09:41,244 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-19 05:09:41,245 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:09:41,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-19 05:09:41,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=269, Unknown=0, NotChecked=0, Total=342 [2021-11-19 05:09:41,248 INFO L87 Difference]: Start difference. First operand 416 states and 484 transitions. Second operand has 19 states, 19 states have (on average 3.9473684210526314) internal successors, (75), 7 states have internal predecessors, (75), 3 states have call successors, (14), 12 states have call predecessors, (14), 3 states have return successors, (12), 4 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-19 05:09:41,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:09:41,807 INFO L93 Difference]: Finished difference Result 461 states and 538 transitions. [2021-11-19 05:09:41,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-19 05:09:41,807 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.9473684210526314) internal successors, (75), 7 states have internal predecessors, (75), 3 states have call successors, (14), 12 states have call predecessors, (14), 3 states have return successors, (12), 4 states have call predecessors, (12), 2 states have call successors, (12) Word has length 101 [2021-11-19 05:09:41,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:09:41,809 INFO L225 Difference]: With dead ends: 461 [2021-11-19 05:09:41,809 INFO L226 Difference]: Without dead ends: 435 [2021-11-19 05:09:41,809 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=114, Invalid=438, Unknown=0, NotChecked=0, Total=552 [2021-11-19 05:09:41,809 INFO L933 BasicCegarLoop]: 176 mSDtfsCounter, 273 mSDsluCounter, 969 mSDsCounter, 0 mSdLazyCounter, 859 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 274 SdHoareTripleChecker+Valid, 1145 SdHoareTripleChecker+Invalid, 976 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 859 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-19 05:09:41,810 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [274 Valid, 1145 Invalid, 976 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 859 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-19 05:09:41,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435 states. [2021-11-19 05:09:41,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435 to 425. [2021-11-19 05:09:41,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 425 states, 332 states have (on average 1.1837349397590362) internal successors, (393), 338 states have internal predecessors, (393), 45 states have call successors, (45), 41 states have call predecessors, (45), 47 states have return successors, (52), 45 states have call predecessors, (52), 41 states have call successors, (52) [2021-11-19 05:09:41,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 490 transitions. [2021-11-19 05:09:41,821 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 490 transitions. Word has length 101 [2021-11-19 05:09:41,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:09:41,822 INFO L470 AbstractCegarLoop]: Abstraction has 425 states and 490 transitions. [2021-11-19 05:09:41,822 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.9473684210526314) internal successors, (75), 7 states have internal predecessors, (75), 3 states have call successors, (14), 12 states have call predecessors, (14), 3 states have return successors, (12), 4 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-19 05:09:41,822 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 490 transitions. [2021-11-19 05:09:41,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-19 05:09:41,824 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:09:41,825 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:09:41,825 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-11-19 05:09:41,825 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-19 05:09:41,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:09:41,826 INFO L85 PathProgramCache]: Analyzing trace with hash 1496072861, now seen corresponding path program 1 times [2021-11-19 05:09:41,826 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:09:41,826 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243465957] [2021-11-19 05:09:41,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:09:41,826 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:09:41,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:41,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:09:41,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:41,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 05:09:41,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:41,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-19 05:09:41,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:41,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-11-19 05:09:41,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:41,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-19 05:09:41,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:41,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 05:09:41,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:42,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-19 05:09:42,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:42,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-11-19 05:09:42,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:42,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 05:09:42,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:42,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-19 05:09:42,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:42,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-19 05:09:42,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:42,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 05:09:42,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:42,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-19 05:09:42,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:42,113 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-11-19 05:09:42,113 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:09:42,114 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243465957] [2021-11-19 05:09:42,114 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243465957] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:09:42,114 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:09:42,114 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-19 05:09:42,114 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354336402] [2021-11-19 05:09:42,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:09:42,115 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-19 05:09:42,115 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:09:42,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-19 05:09:42,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2021-11-19 05:09:42,116 INFO L87 Difference]: Start difference. First operand 425 states and 490 transitions. Second operand has 14 states, 14 states have (on average 4.785714285714286) internal successors, (67), 5 states have internal predecessors, (67), 2 states have call successors, (15), 10 states have call predecessors, (15), 3 states have return successors, (10), 3 states have call predecessors, (10), 1 states have call successors, (10) [2021-11-19 05:09:42,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:09:42,637 INFO L93 Difference]: Finished difference Result 376 states and 423 transitions. [2021-11-19 05:09:42,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-19 05:09:42,637 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.785714285714286) internal successors, (67), 5 states have internal predecessors, (67), 2 states have call successors, (15), 10 states have call predecessors, (15), 3 states have return successors, (10), 3 states have call predecessors, (10), 1 states have call successors, (10) Word has length 110 [2021-11-19 05:09:42,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:09:42,639 INFO L225 Difference]: With dead ends: 376 [2021-11-19 05:09:42,639 INFO L226 Difference]: Without dead ends: 376 [2021-11-19 05:09:42,639 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2021-11-19 05:09:42,639 INFO L933 BasicCegarLoop]: 178 mSDtfsCounter, 148 mSDsluCounter, 737 mSDsCounter, 0 mSdLazyCounter, 733 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 915 SdHoareTripleChecker+Invalid, 796 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 733 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-19 05:09:42,640 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [150 Valid, 915 Invalid, 796 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 733 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-19 05:09:42,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2021-11-19 05:09:42,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 242. [2021-11-19 05:09:42,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 189 states have (on average 1.1428571428571428) internal successors, (216), 191 states have internal predecessors, (216), 26 states have call successors, (26), 26 states have call predecessors, (26), 26 states have return successors, (26), 24 states have call predecessors, (26), 24 states have call successors, (26) [2021-11-19 05:09:42,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 268 transitions. [2021-11-19 05:09:42,647 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 268 transitions. Word has length 110 [2021-11-19 05:09:42,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:09:42,648 INFO L470 AbstractCegarLoop]: Abstraction has 242 states and 268 transitions. [2021-11-19 05:09:42,648 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.785714285714286) internal successors, (67), 5 states have internal predecessors, (67), 2 states have call successors, (15), 10 states have call predecessors, (15), 3 states have return successors, (10), 3 states have call predecessors, (10), 1 states have call successors, (10) [2021-11-19 05:09:42,648 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 268 transitions. [2021-11-19 05:09:42,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-11-19 05:09:42,650 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:09:42,650 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:09:42,650 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-11-19 05:09:42,650 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-19 05:09:42,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:09:42,651 INFO L85 PathProgramCache]: Analyzing trace with hash -1225581856, now seen corresponding path program 1 times [2021-11-19 05:09:42,651 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:09:42,651 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224472076] [2021-11-19 05:09:42,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:09:42,652 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:09:42,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:42,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:09:42,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:42,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 05:09:42,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:42,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-19 05:09:42,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:42,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-19 05:09:42,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:42,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-19 05:09:42,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:42,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-19 05:09:42,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:42,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-19 05:09:42,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:42,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 05:09:42,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:42,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-19 05:09:42,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:42,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-19 05:09:42,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:42,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 05:09:42,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:42,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-11-19 05:09:42,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:42,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-11-19 05:09:42,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:42,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:09:42,984 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:09:42,986 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224472076] [2021-11-19 05:09:42,986 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224472076] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:09:42,986 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:09:42,987 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-19 05:09:42,987 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051653681] [2021-11-19 05:09:42,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:09:42,988 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-19 05:09:42,988 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:09:42,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-19 05:09:42,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2021-11-19 05:09:42,990 INFO L87 Difference]: Start difference. First operand 242 states and 268 transitions. Second operand has 15 states, 15 states have (on average 5.933333333333334) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (15), 12 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-19 05:09:43,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:09:43,685 INFO L93 Difference]: Finished difference Result 256 states and 284 transitions. [2021-11-19 05:09:43,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-19 05:09:43,686 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.933333333333334) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (15), 12 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) Word has length 117 [2021-11-19 05:09:43,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:09:43,687 INFO L225 Difference]: With dead ends: 256 [2021-11-19 05:09:43,687 INFO L226 Difference]: Without dead ends: 256 [2021-11-19 05:09:43,687 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=114, Invalid=228, Unknown=0, NotChecked=0, Total=342 [2021-11-19 05:09:43,688 INFO L933 BasicCegarLoop]: 171 mSDtfsCounter, 116 mSDsluCounter, 594 mSDsCounter, 0 mSdLazyCounter, 642 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 765 SdHoareTripleChecker+Invalid, 687 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 642 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-19 05:09:43,688 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [117 Valid, 765 Invalid, 687 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 642 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-19 05:09:43,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2021-11-19 05:09:43,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 246. [2021-11-19 05:09:43,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 192 states have (on average 1.140625) internal successors, (219), 194 states have internal predecessors, (219), 26 states have call successors, (26), 26 states have call predecessors, (26), 27 states have return successors, (27), 25 states have call predecessors, (27), 24 states have call successors, (27) [2021-11-19 05:09:43,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 272 transitions. [2021-11-19 05:09:43,694 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 272 transitions. Word has length 117 [2021-11-19 05:09:43,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:09:43,695 INFO L470 AbstractCegarLoop]: Abstraction has 246 states and 272 transitions. [2021-11-19 05:09:43,695 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.933333333333334) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (15), 12 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-19 05:09:43,695 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 272 transitions. [2021-11-19 05:09:43,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-11-19 05:09:43,697 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:09:43,697 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:09:43,697 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-11-19 05:09:43,698 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-19 05:09:43,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:09:43,698 INFO L85 PathProgramCache]: Analyzing trace with hash -1044095359, now seen corresponding path program 1 times [2021-11-19 05:09:43,699 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:09:43,699 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962459232] [2021-11-19 05:09:43,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:09:43,699 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:09:43,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:43,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:09:43,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:43,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 05:09:43,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:43,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-19 05:09:43,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:43,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-19 05:09:43,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:43,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-19 05:09:43,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:43,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-19 05:09:43,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:43,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-19 05:09:43,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:43,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 05:09:43,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:43,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-19 05:09:43,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:43,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-19 05:09:43,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:44,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 05:09:44,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:44,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-11-19 05:09:44,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:44,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-11-19 05:09:44,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:44,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:09:44,038 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:09:44,038 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962459232] [2021-11-19 05:09:44,038 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962459232] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:09:44,038 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:09:44,038 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-19 05:09:44,039 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064989079] [2021-11-19 05:09:44,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:09:44,039 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-19 05:09:44,039 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:09:44,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-19 05:09:44,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2021-11-19 05:09:44,040 INFO L87 Difference]: Start difference. First operand 246 states and 272 transitions. Second operand has 15 states, 15 states have (on average 5.933333333333334) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (15), 12 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-19 05:09:44,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:09:44,500 INFO L93 Difference]: Finished difference Result 256 states and 282 transitions. [2021-11-19 05:09:44,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-19 05:09:44,501 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.933333333333334) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (15), 12 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) Word has length 117 [2021-11-19 05:09:44,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:09:44,502 INFO L225 Difference]: With dead ends: 256 [2021-11-19 05:09:44,502 INFO L226 Difference]: Without dead ends: 252 [2021-11-19 05:09:44,502 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2021-11-19 05:09:44,502 INFO L933 BasicCegarLoop]: 171 mSDtfsCounter, 231 mSDsluCounter, 655 mSDsCounter, 0 mSdLazyCounter, 677 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 231 SdHoareTripleChecker+Valid, 826 SdHoareTripleChecker+Invalid, 779 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 677 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-19 05:09:44,503 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [231 Valid, 826 Invalid, 779 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 677 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-19 05:09:44,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2021-11-19 05:09:44,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 246. [2021-11-19 05:09:44,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 192 states have (on average 1.1354166666666667) internal successors, (218), 194 states have internal predecessors, (218), 26 states have call successors, (26), 26 states have call predecessors, (26), 27 states have return successors, (27), 25 states have call predecessors, (27), 24 states have call successors, (27) [2021-11-19 05:09:44,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 271 transitions. [2021-11-19 05:09:44,508 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 271 transitions. Word has length 117 [2021-11-19 05:09:44,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:09:44,509 INFO L470 AbstractCegarLoop]: Abstraction has 246 states and 271 transitions. [2021-11-19 05:09:44,509 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.933333333333334) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (15), 12 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-19 05:09:44,509 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 271 transitions. [2021-11-19 05:09:44,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-11-19 05:09:44,510 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:09:44,511 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:09:44,511 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-11-19 05:09:44,511 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-19 05:09:44,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:09:44,512 INFO L85 PathProgramCache]: Analyzing trace with hash 1109919017, now seen corresponding path program 1 times [2021-11-19 05:09:44,512 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:09:44,512 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009323406] [2021-11-19 05:09:44,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:09:44,512 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:09:44,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:44,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:09:44,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:44,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 05:09:44,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:44,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-19 05:09:44,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:44,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-19 05:09:44,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:44,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-19 05:09:44,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:44,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-19 05:09:44,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:44,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-19 05:09:44,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:44,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 05:09:44,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:44,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-19 05:09:44,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:44,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-19 05:09:44,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:44,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 05:09:44,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:44,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-19 05:09:45,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:45,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-19 05:09:45,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:45,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 05:09:45,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:45,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-19 05:09:45,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:45,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-11-19 05:09:45,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:45,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-11-19 05:09:45,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:45,067 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-19 05:09:45,067 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:09:45,067 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009323406] [2021-11-19 05:09:45,067 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009323406] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:09:45,068 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:09:45,068 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-11-19 05:09:45,068 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519963196] [2021-11-19 05:09:45,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:09:45,069 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-11-19 05:09:45,069 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:09:45,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-11-19 05:09:45,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=515, Unknown=0, NotChecked=0, Total=600 [2021-11-19 05:09:45,070 INFO L87 Difference]: Start difference. First operand 246 states and 271 transitions. Second operand has 25 states, 25 states have (on average 3.92) internal successors, (98), 11 states have internal predecessors, (98), 3 states have call successors, (16), 12 states have call predecessors, (16), 5 states have return successors, (14), 6 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-19 05:09:45,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:09:45,977 INFO L93 Difference]: Finished difference Result 315 states and 356 transitions. [2021-11-19 05:09:45,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-19 05:09:45,978 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.92) internal successors, (98), 11 states have internal predecessors, (98), 3 states have call successors, (16), 12 states have call predecessors, (16), 5 states have return successors, (14), 6 states have call predecessors, (14), 2 states have call successors, (14) Word has length 147 [2021-11-19 05:09:45,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:09:45,979 INFO L225 Difference]: With dead ends: 315 [2021-11-19 05:09:45,979 INFO L226 Difference]: Without dead ends: 283 [2021-11-19 05:09:45,980 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=148, Invalid=1042, Unknown=0, NotChecked=0, Total=1190 [2021-11-19 05:09:45,980 INFO L933 BasicCegarLoop]: 164 mSDtfsCounter, 192 mSDsluCounter, 1484 mSDsCounter, 0 mSdLazyCounter, 1782 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 1648 SdHoareTripleChecker+Invalid, 1864 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 1782 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-19 05:09:45,980 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [200 Valid, 1648 Invalid, 1864 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 1782 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-19 05:09:45,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2021-11-19 05:09:45,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 263. [2021-11-19 05:09:45,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 207 states have (on average 1.144927536231884) internal successors, (237), 209 states have internal predecessors, (237), 26 states have call successors, (26), 26 states have call predecessors, (26), 29 states have return successors, (29), 27 states have call predecessors, (29), 24 states have call successors, (29) [2021-11-19 05:09:45,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 292 transitions. [2021-11-19 05:09:45,986 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 292 transitions. Word has length 147 [2021-11-19 05:09:45,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:09:45,986 INFO L470 AbstractCegarLoop]: Abstraction has 263 states and 292 transitions. [2021-11-19 05:09:45,987 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.92) internal successors, (98), 11 states have internal predecessors, (98), 3 states have call successors, (16), 12 states have call predecessors, (16), 5 states have return successors, (14), 6 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-19 05:09:45,987 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 292 transitions. [2021-11-19 05:09:45,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-11-19 05:09:45,988 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:09:45,988 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:09:45,988 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-11-19 05:09:45,989 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-19 05:09:45,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:09:45,989 INFO L85 PathProgramCache]: Analyzing trace with hash 2025391703, now seen corresponding path program 1 times [2021-11-19 05:09:45,989 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:09:45,990 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236900105] [2021-11-19 05:09:45,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:09:45,990 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:09:46,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:46,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:09:46,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:46,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 05:09:46,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:46,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-19 05:09:46,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:46,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-19 05:09:46,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:46,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-19 05:09:46,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:46,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-19 05:09:46,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:46,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-19 05:09:46,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:46,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 05:09:46,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:46,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-19 05:09:46,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:46,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-19 05:09:46,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:46,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 05:09:46,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:46,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-19 05:09:46,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:46,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-19 05:09:46,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:46,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 05:09:46,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:46,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-19 05:09:46,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:46,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-11-19 05:09:46,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:46,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-11-19 05:09:46,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:46,501 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-11-19 05:09:46,501 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:09:46,501 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236900105] [2021-11-19 05:09:46,501 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236900105] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:09:46,502 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:09:46,502 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2021-11-19 05:09:46,502 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959397257] [2021-11-19 05:09:46,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:09:46,503 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-11-19 05:09:46,503 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:09:46,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-11-19 05:09:46,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=469, Unknown=0, NotChecked=0, Total=552 [2021-11-19 05:09:46,504 INFO L87 Difference]: Start difference. First operand 263 states and 292 transitions. Second operand has 24 states, 24 states have (on average 4.166666666666667) internal successors, (100), 10 states have internal predecessors, (100), 2 states have call successors, (16), 12 states have call predecessors, (16), 5 states have return successors, (14), 6 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-19 05:09:47,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:09:47,301 INFO L93 Difference]: Finished difference Result 282 states and 313 transitions. [2021-11-19 05:09:47,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-19 05:09:47,302 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 4.166666666666667) internal successors, (100), 10 states have internal predecessors, (100), 2 states have call successors, (16), 12 states have call predecessors, (16), 5 states have return successors, (14), 6 states have call predecessors, (14), 2 states have call successors, (14) Word has length 148 [2021-11-19 05:09:47,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:09:47,303 INFO L225 Difference]: With dead ends: 282 [2021-11-19 05:09:47,303 INFO L226 Difference]: Without dead ends: 277 [2021-11-19 05:09:47,304 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=130, Invalid=740, Unknown=0, NotChecked=0, Total=870 [2021-11-19 05:09:47,305 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 296 mSDsluCounter, 1582 mSDsCounter, 0 mSdLazyCounter, 1459 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 300 SdHoareTripleChecker+Valid, 1763 SdHoareTripleChecker+Invalid, 1589 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 1459 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-19 05:09:47,305 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [300 Valid, 1763 Invalid, 1589 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 1459 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-19 05:09:47,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2021-11-19 05:09:47,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 263. [2021-11-19 05:09:47,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 207 states have (on average 1.1400966183574879) internal successors, (236), 209 states have internal predecessors, (236), 26 states have call successors, (26), 26 states have call predecessors, (26), 29 states have return successors, (29), 27 states have call predecessors, (29), 24 states have call successors, (29) [2021-11-19 05:09:47,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 291 transitions. [2021-11-19 05:09:47,311 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 291 transitions. Word has length 148 [2021-11-19 05:09:47,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:09:47,312 INFO L470 AbstractCegarLoop]: Abstraction has 263 states and 291 transitions. [2021-11-19 05:09:47,312 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 4.166666666666667) internal successors, (100), 10 states have internal predecessors, (100), 2 states have call successors, (16), 12 states have call predecessors, (16), 5 states have return successors, (14), 6 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-19 05:09:47,312 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 291 transitions. [2021-11-19 05:09:47,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-11-19 05:09:47,313 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:09:47,314 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:09:47,314 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-11-19 05:09:47,314 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-19 05:09:47,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:09:47,315 INFO L85 PathProgramCache]: Analyzing trace with hash 1867828009, now seen corresponding path program 1 times [2021-11-19 05:09:47,315 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:09:47,315 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038627471] [2021-11-19 05:09:47,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:09:47,315 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:09:47,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:47,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:09:47,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:47,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 05:09:47,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:47,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-19 05:09:47,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:47,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-19 05:09:47,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:47,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-19 05:09:47,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:47,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-19 05:09:47,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:47,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-19 05:09:47,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:47,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 05:09:47,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:47,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-19 05:09:47,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:47,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-19 05:09:47,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:47,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 05:09:47,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:47,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-19 05:09:47,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:47,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-19 05:09:47,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:47,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 05:09:47,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:47,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-19 05:09:47,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:47,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-11-19 05:09:47,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:47,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-11-19 05:09:47,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:47,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-11-19 05:09:47,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:47,787 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-11-19 05:09:47,787 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:09:47,787 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038627471] [2021-11-19 05:09:47,787 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038627471] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:09:47,788 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:09:47,788 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2021-11-19 05:09:47,788 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006340694] [2021-11-19 05:09:47,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:09:47,789 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-19 05:09:47,789 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:09:47,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-19 05:09:47,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2021-11-19 05:09:47,790 INFO L87 Difference]: Start difference. First operand 263 states and 291 transitions. Second operand has 21 states, 21 states have (on average 4.428571428571429) internal successors, (93), 8 states have internal predecessors, (93), 3 states have call successors, (17), 12 states have call predecessors, (17), 4 states have return successors, (15), 5 states have call predecessors, (15), 2 states have call successors, (15) [2021-11-19 05:09:48,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:09:48,600 INFO L93 Difference]: Finished difference Result 301 states and 336 transitions. [2021-11-19 05:09:48,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-19 05:09:48,600 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 4.428571428571429) internal successors, (93), 8 states have internal predecessors, (93), 3 states have call successors, (17), 12 states have call predecessors, (17), 4 states have return successors, (15), 5 states have call predecessors, (15), 2 states have call successors, (15) Word has length 150 [2021-11-19 05:09:48,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:09:48,602 INFO L225 Difference]: With dead ends: 301 [2021-11-19 05:09:48,602 INFO L226 Difference]: Without dead ends: 263 [2021-11-19 05:09:48,602 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=141, Invalid=671, Unknown=0, NotChecked=0, Total=812 [2021-11-19 05:09:48,603 INFO L933 BasicCegarLoop]: 164 mSDtfsCounter, 214 mSDsluCounter, 1107 mSDsCounter, 0 mSdLazyCounter, 1132 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 1271 SdHoareTripleChecker+Invalid, 1227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 1132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-19 05:09:48,603 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [219 Valid, 1271 Invalid, 1227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 1132 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-19 05:09:48,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2021-11-19 05:09:48,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 257. [2021-11-19 05:09:48,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 203 states have (on average 1.1280788177339902) internal successors, (229), 205 states have internal predecessors, (229), 25 states have call successors, (25), 25 states have call predecessors, (25), 28 states have return successors, (28), 26 states have call predecessors, (28), 23 states have call successors, (28) [2021-11-19 05:09:48,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 282 transitions. [2021-11-19 05:09:48,608 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 282 transitions. Word has length 150 [2021-11-19 05:09:48,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:09:48,609 INFO L470 AbstractCegarLoop]: Abstraction has 257 states and 282 transitions. [2021-11-19 05:09:48,609 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 4.428571428571429) internal successors, (93), 8 states have internal predecessors, (93), 3 states have call successors, (17), 12 states have call predecessors, (17), 4 states have return successors, (15), 5 states have call predecessors, (15), 2 states have call successors, (15) [2021-11-19 05:09:48,609 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 282 transitions. [2021-11-19 05:09:48,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-11-19 05:09:48,617 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:09:48,618 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:09:48,618 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-11-19 05:09:48,618 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-19 05:09:48,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:09:48,619 INFO L85 PathProgramCache]: Analyzing trace with hash -495529015, now seen corresponding path program 1 times [2021-11-19 05:09:48,619 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:09:48,619 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348256686] [2021-11-19 05:09:48,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:09:48,619 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:09:48,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:48,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:09:48,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:48,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 05:09:48,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:48,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-19 05:09:48,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:48,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-19 05:09:48,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:48,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-19 05:09:48,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:48,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-19 05:09:48,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:48,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-19 05:09:48,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:48,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 05:09:48,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:48,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-19 05:09:48,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:48,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-19 05:09:48,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:48,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 05:09:48,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:48,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-19 05:09:48,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:48,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-19 05:09:48,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:48,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 05:09:48,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:48,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-19 05:09:48,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:48,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-11-19 05:09:48,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:48,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-11-19 05:09:48,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:48,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-11-19 05:09:48,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:48,986 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-11-19 05:09:48,987 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:09:48,987 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348256686] [2021-11-19 05:09:48,987 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348256686] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:09:48,987 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:09:48,987 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-19 05:09:48,988 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733418030] [2021-11-19 05:09:48,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:09:48,988 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-19 05:09:48,988 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:09:48,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-19 05:09:48,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2021-11-19 05:09:48,989 INFO L87 Difference]: Start difference. First operand 257 states and 282 transitions. Second operand has 15 states, 15 states have (on average 6.533333333333333) internal successors, (98), 5 states have internal predecessors, (98), 4 states have call successors, (17), 12 states have call predecessors, (17), 2 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) [2021-11-19 05:09:49,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:09:49,497 INFO L93 Difference]: Finished difference Result 254 states and 276 transitions. [2021-11-19 05:09:49,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-19 05:09:49,497 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 6.533333333333333) internal successors, (98), 5 states have internal predecessors, (98), 4 states have call successors, (17), 12 states have call predecessors, (17), 2 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) Word has length 155 [2021-11-19 05:09:49,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:09:49,499 INFO L225 Difference]: With dead ends: 254 [2021-11-19 05:09:49,499 INFO L226 Difference]: Without dead ends: 243 [2021-11-19 05:09:49,499 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=147, Invalid=405, Unknown=0, NotChecked=0, Total=552 [2021-11-19 05:09:49,500 INFO L933 BasicCegarLoop]: 143 mSDtfsCounter, 298 mSDsluCounter, 328 mSDsCounter, 0 mSdLazyCounter, 441 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 300 SdHoareTripleChecker+Valid, 471 SdHoareTripleChecker+Invalid, 539 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 05:09:49,500 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [300 Valid, 471 Invalid, 539 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 441 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 05:09:49,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2021-11-19 05:09:49,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 229. [2021-11-19 05:09:49,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 179 states have (on average 1.111731843575419) internal successors, (199), 181 states have internal predecessors, (199), 24 states have call successors, (24), 24 states have call predecessors, (24), 25 states have return successors, (25), 23 states have call predecessors, (25), 22 states have call successors, (25) [2021-11-19 05:09:49,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 248 transitions. [2021-11-19 05:09:49,506 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 248 transitions. Word has length 155 [2021-11-19 05:09:49,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:09:49,506 INFO L470 AbstractCegarLoop]: Abstraction has 229 states and 248 transitions. [2021-11-19 05:09:49,506 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.533333333333333) internal successors, (98), 5 states have internal predecessors, (98), 4 states have call successors, (17), 12 states have call predecessors, (17), 2 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) [2021-11-19 05:09:49,506 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 248 transitions. [2021-11-19 05:09:49,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-11-19 05:09:49,508 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:09:49,508 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:09:49,508 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-11-19 05:09:49,508 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-19 05:09:49,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:09:49,509 INFO L85 PathProgramCache]: Analyzing trace with hash -1029557280, now seen corresponding path program 1 times [2021-11-19 05:09:49,509 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:09:49,509 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553634608] [2021-11-19 05:09:49,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:09:49,509 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:09:49,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:49,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:09:49,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:49,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 05:09:49,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:49,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-19 05:09:49,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:49,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-19 05:09:49,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:49,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-19 05:09:49,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:49,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-19 05:09:49,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:49,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-19 05:09:49,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:49,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 05:09:49,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:49,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-19 05:09:49,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:49,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-19 05:09:49,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:49,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 05:09:49,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:49,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-19 05:09:49,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:49,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-19 05:09:49,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:49,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 05:09:49,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:49,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-19 05:09:49,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:49,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-11-19 05:09:49,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:49,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-11-19 05:09:49,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:49,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-11-19 05:09:49,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:49,876 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-19 05:09:49,877 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:09:49,877 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553634608] [2021-11-19 05:09:49,877 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553634608] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:09:49,877 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:09:49,877 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-11-19 05:09:49,878 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795935831] [2021-11-19 05:09:49,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:09:49,878 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-19 05:09:49,878 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:09:49,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-19 05:09:49,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2021-11-19 05:09:49,879 INFO L87 Difference]: Start difference. First operand 229 states and 248 transitions. Second operand has 17 states, 17 states have (on average 6.235294117647059) internal successors, (106), 5 states have internal predecessors, (106), 2 states have call successors, (17), 13 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2021-11-19 05:09:50,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:09:50,289 INFO L93 Difference]: Finished difference Result 218 states and 234 transitions. [2021-11-19 05:09:50,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-19 05:09:50,290 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 6.235294117647059) internal successors, (106), 5 states have internal predecessors, (106), 2 states have call successors, (17), 13 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) Word has length 157 [2021-11-19 05:09:50,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:09:50,291 INFO L225 Difference]: With dead ends: 218 [2021-11-19 05:09:50,291 INFO L226 Difference]: Without dead ends: 208 [2021-11-19 05:09:50,291 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=124, Invalid=338, Unknown=0, NotChecked=0, Total=462 [2021-11-19 05:09:50,291 INFO L933 BasicCegarLoop]: 146 mSDtfsCounter, 212 mSDsluCounter, 561 mSDsCounter, 0 mSdLazyCounter, 559 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 707 SdHoareTripleChecker+Invalid, 656 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 559 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 05:09:50,292 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [212 Valid, 707 Invalid, 656 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 559 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 05:09:50,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2021-11-19 05:09:50,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 208. [2021-11-19 05:09:50,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 161 states have (on average 1.0993788819875776) internal successors, (177), 162 states have internal predecessors, (177), 23 states have call successors, (23), 23 states have call predecessors, (23), 23 states have return successors, (23), 22 states have call predecessors, (23), 21 states have call successors, (23) [2021-11-19 05:09:50,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 223 transitions. [2021-11-19 05:09:50,297 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 223 transitions. Word has length 157 [2021-11-19 05:09:50,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:09:50,298 INFO L470 AbstractCegarLoop]: Abstraction has 208 states and 223 transitions. [2021-11-19 05:09:50,298 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 6.235294117647059) internal successors, (106), 5 states have internal predecessors, (106), 2 states have call successors, (17), 13 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2021-11-19 05:09:50,298 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 223 transitions. [2021-11-19 05:09:50,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2021-11-19 05:09:50,300 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:09:50,300 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:09:50,300 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-11-19 05:09:50,300 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-19 05:09:50,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:09:50,301 INFO L85 PathProgramCache]: Analyzing trace with hash -1506473619, now seen corresponding path program 1 times [2021-11-19 05:09:50,301 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:09:50,301 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559754107] [2021-11-19 05:09:50,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:09:50,302 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:09:50,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:50,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:09:50,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:50,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 05:09:50,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:50,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-19 05:09:50,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:50,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-19 05:09:50,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:50,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-19 05:09:50,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:50,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-19 05:09:50,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:50,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-19 05:09:50,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:50,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 05:09:50,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:50,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-19 05:09:50,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:50,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-19 05:09:50,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:50,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 05:09:50,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:50,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-19 05:09:50,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:50,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-19 05:09:50,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:50,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 05:09:50,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:50,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-19 05:09:50,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:50,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-11-19 05:09:50,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:50,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-11-19 05:09:50,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:50,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-11-19 05:09:50,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:50,746 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-11-19 05:09:50,746 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:09:50,747 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559754107] [2021-11-19 05:09:50,747 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559754107] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:09:50,747 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:09:50,747 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2021-11-19 05:09:50,747 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253769796] [2021-11-19 05:09:50,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:09:50,748 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-19 05:09:50,748 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:09:50,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-19 05:09:50,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=293, Unknown=0, NotChecked=0, Total=380 [2021-11-19 05:09:50,749 INFO L87 Difference]: Start difference. First operand 208 states and 223 transitions. Second operand has 20 states, 20 states have (on average 5.2) internal successors, (104), 8 states have internal predecessors, (104), 5 states have call successors, (17), 13 states have call predecessors, (17), 3 states have return successors, (15), 6 states have call predecessors, (15), 4 states have call successors, (15) [2021-11-19 05:09:52,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:09:52,032 INFO L93 Difference]: Finished difference Result 351 states and 375 transitions. [2021-11-19 05:09:52,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-11-19 05:09:52,032 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.2) internal successors, (104), 8 states have internal predecessors, (104), 5 states have call successors, (17), 13 states have call predecessors, (17), 3 states have return successors, (15), 6 states have call predecessors, (15), 4 states have call successors, (15) Word has length 158 [2021-11-19 05:09:52,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:09:52,034 INFO L225 Difference]: With dead ends: 351 [2021-11-19 05:09:52,034 INFO L226 Difference]: Without dead ends: 211 [2021-11-19 05:09:52,035 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 541 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=387, Invalid=1965, Unknown=0, NotChecked=0, Total=2352 [2021-11-19 05:09:52,035 INFO L933 BasicCegarLoop]: 136 mSDtfsCounter, 609 mSDsluCounter, 492 mSDsCounter, 0 mSdLazyCounter, 1280 mSolverCounterSat, 256 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 610 SdHoareTripleChecker+Valid, 628 SdHoareTripleChecker+Invalid, 1536 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 256 IncrementalHoareTripleChecker+Valid, 1280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-19 05:09:52,036 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [610 Valid, 628 Invalid, 1536 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [256 Valid, 1280 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-19 05:09:52,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2021-11-19 05:09:52,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 208. [2021-11-19 05:09:52,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 161 states have (on average 1.093167701863354) internal successors, (176), 162 states have internal predecessors, (176), 23 states have call successors, (23), 23 states have call predecessors, (23), 23 states have return successors, (23), 22 states have call predecessors, (23), 21 states have call successors, (23) [2021-11-19 05:09:52,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 222 transitions. [2021-11-19 05:09:52,040 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 222 transitions. Word has length 158 [2021-11-19 05:09:52,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:09:52,040 INFO L470 AbstractCegarLoop]: Abstraction has 208 states and 222 transitions. [2021-11-19 05:09:52,041 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.2) internal successors, (104), 8 states have internal predecessors, (104), 5 states have call successors, (17), 13 states have call predecessors, (17), 3 states have return successors, (15), 6 states have call predecessors, (15), 4 states have call successors, (15) [2021-11-19 05:09:52,041 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 222 transitions. [2021-11-19 05:09:52,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2021-11-19 05:09:52,042 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:09:52,042 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:09:52,042 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-11-19 05:09:52,043 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-19 05:09:52,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:09:52,043 INFO L85 PathProgramCache]: Analyzing trace with hash 424652015, now seen corresponding path program 1 times [2021-11-19 05:09:52,043 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:09:52,043 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365440377] [2021-11-19 05:09:52,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:09:52,044 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:09:52,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:52,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:09:52,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:52,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 05:09:52,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:52,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-19 05:09:52,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:52,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-19 05:09:52,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:52,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-19 05:09:52,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:52,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-19 05:09:52,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:52,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-19 05:09:52,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:52,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 05:09:52,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:52,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-19 05:09:52,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:52,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-19 05:09:52,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:52,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 05:09:52,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:52,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-19 05:09:52,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:52,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-19 05:09:52,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:52,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 05:09:52,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:52,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-19 05:09:52,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:52,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-11-19 05:09:52,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:52,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-11-19 05:09:52,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:52,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-11-19 05:09:52,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:52,618 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-11-19 05:09:52,619 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:09:52,619 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365440377] [2021-11-19 05:09:52,619 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365440377] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:09:52,619 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:09:52,619 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-11-19 05:09:52,620 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464102970] [2021-11-19 05:09:52,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:09:52,620 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-11-19 05:09:52,620 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:09:52,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-11-19 05:09:52,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=503, Unknown=0, NotChecked=0, Total=600 [2021-11-19 05:09:52,621 INFO L87 Difference]: Start difference. First operand 208 states and 222 transitions. Second operand has 25 states, 25 states have (on average 4.16) internal successors, (104), 11 states have internal predecessors, (104), 5 states have call successors, (17), 13 states have call predecessors, (17), 4 states have return successors, (15), 7 states have call predecessors, (15), 4 states have call successors, (15) [2021-11-19 05:09:53,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:09:53,762 INFO L93 Difference]: Finished difference Result 208 states and 223 transitions. [2021-11-19 05:09:53,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-11-19 05:09:53,762 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.16) internal successors, (104), 11 states have internal predecessors, (104), 5 states have call successors, (17), 13 states have call predecessors, (17), 4 states have return successors, (15), 7 states have call predecessors, (15), 4 states have call successors, (15) Word has length 158 [2021-11-19 05:09:53,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:09:53,763 INFO L225 Difference]: With dead ends: 208 [2021-11-19 05:09:53,763 INFO L226 Difference]: Without dead ends: 0 [2021-11-19 05:09:53,764 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 324 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=265, Invalid=1715, Unknown=0, NotChecked=0, Total=1980 [2021-11-19 05:09:53,764 INFO L933 BasicCegarLoop]: 123 mSDtfsCounter, 302 mSDsluCounter, 526 mSDsCounter, 0 mSdLazyCounter, 1618 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 302 SdHoareTripleChecker+Valid, 649 SdHoareTripleChecker+Invalid, 1731 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 1618 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-19 05:09:53,764 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [302 Valid, 649 Invalid, 1731 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 1618 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-19 05:09:53,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-19 05:09:53,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-19 05:09:53,765 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) [2021-11-19 05:09:53,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-19 05:09:53,765 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 158 [2021-11-19 05:09:53,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:09:53,765 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-19 05:09:53,765 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.16) internal successors, (104), 11 states have internal predecessors, (104), 5 states have call successors, (17), 13 states have call predecessors, (17), 4 states have return successors, (15), 7 states have call predecessors, (15), 4 states have call successors, (15) [2021-11-19 05:09:53,765 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-19 05:09:53,766 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-19 05:09:53,768 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr0ENSURES_VIOLATIONMEMORY_LEAK (1 of 2 remaining) [2021-11-19 05:09:53,768 INFO L764 garLoopResultBuilder]: Registering result SAFE for location errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK (0 of 2 remaining) [2021-11-19 05:09:53,768 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-11-19 05:09:53,772 INFO L732 BasicCegarLoop]: Path program 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] [2021-11-19 05:09:53,774 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-19 05:09:53,777 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 05:09:53 BoogieIcfgContainer [2021-11-19 05:09:53,777 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-19 05:09:53,778 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-19 05:09:53,778 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-19 05:09:53,778 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-19 05:09:53,778 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:08:46" (3/4) ... [2021-11-19 05:09:53,782 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-19 05:09:53,790 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure reach_error [2021-11-19 05:09:53,790 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure IoRegisterDeviceInterface [2021-11-19 05:09:53,790 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure _BLAST_init [2021-11-19 05:09:53,790 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure FloppyProcessQueuedRequests [2021-11-19 05:09:53,790 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure IoSetDeviceInterfaceState [2021-11-19 05:09:53,791 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure FloppyPnp [2021-11-19 05:09:53,791 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2021-11-19 05:09:53,791 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure FloppyCreateClose [2021-11-19 05:09:53,791 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure stubMoreProcessingRequired [2021-11-19 05:09:53,791 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure FloppyPnpComplete [2021-11-19 05:09:53,791 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure KeWaitForSingleObject [2021-11-19 05:09:53,791 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure IofCompleteRequest [2021-11-19 05:09:53,791 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure FloppyStartDevice [2021-11-19 05:09:53,792 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure PsCreateSystemThread [2021-11-19 05:09:53,792 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ObReferenceObjectByHandle [2021-11-19 05:09:53,792 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure IoBuildDeviceIoControlRequest [2021-11-19 05:09:53,792 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure KeSetEvent [2021-11-19 05:09:53,792 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure stub_driver_init [2021-11-19 05:09:53,792 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure errorFn [2021-11-19 05:09:53,792 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure FlQueueIrpToThread [2021-11-19 05:09:53,792 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure IofCallDriver [2021-11-19 05:09:53,793 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2021-11-19 05:09:53,793 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure FlFdcDeviceIo [2021-11-19 05:09:53,793 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure FlAcpiConfigureFloppy [2021-11-19 05:09:53,793 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure IoDeleteSymbolicLink [2021-11-19 05:09:53,794 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure IoQueryDeviceDescription [2021-11-19 05:09:53,794 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ZwClose [2021-11-19 05:09:53,814 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 78 nodes and edges [2021-11-19 05:09:53,816 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 45 nodes and edges [2021-11-19 05:09:53,819 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-11-19 05:09:53,821 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-11-19 05:09:53,982 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477ed157-9a1d-40bb-af54-73ffa40366aa/bin/uautomizer-ZXIjhQolGL/witness.graphml [2021-11-19 05:09:53,982 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-19 05:09:53,983 INFO L158 Benchmark]: Toolchain (without parser) took 69634.23ms. Allocated memory was 98.6MB in the beginning and 302.0MB in the end (delta: 203.4MB). Free memory was 75.8MB in the beginning and 209.0MB in the end (delta: -133.3MB). Peak memory consumption was 69.5MB. Max. memory is 16.1GB. [2021-11-19 05:09:53,983 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 98.6MB. Free memory was 72.3MB in the beginning and 72.3MB in the end (delta: 41.6kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 05:09:53,983 INFO L158 Benchmark]: CACSL2BoogieTranslator took 664.84ms. Allocated memory is still 98.6MB. Free memory was 75.5MB in the beginning and 62.0MB in the end (delta: 13.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-19 05:09:53,984 INFO L158 Benchmark]: Boogie Preprocessor took 125.02ms. Allocated memory is still 98.6MB. Free memory was 62.0MB in the beginning and 58.5MB in the end (delta: 3.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-19 05:09:53,984 INFO L158 Benchmark]: RCFGBuilder took 1022.98ms. Allocated memory was 98.6MB in the beginning and 119.5MB in the end (delta: 21.0MB). Free memory was 58.5MB in the beginning and 80.8MB in the end (delta: -22.3MB). Peak memory consumption was 35.2MB. Max. memory is 16.1GB. [2021-11-19 05:09:53,984 INFO L158 Benchmark]: TraceAbstraction took 67610.84ms. Allocated memory was 119.5MB in the beginning and 302.0MB in the end (delta: 182.5MB). Free memory was 80.6MB in the beginning and 226.9MB in the end (delta: -146.2MB). Peak memory consumption was 36.2MB. Max. memory is 16.1GB. [2021-11-19 05:09:53,985 INFO L158 Benchmark]: Witness Printer took 204.70ms. Allocated memory is still 302.0MB. Free memory was 226.9MB in the beginning and 209.0MB in the end (delta: 17.8MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2021-11-19 05:09:53,994 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 98.6MB. Free memory was 72.3MB in the beginning and 72.3MB in the end (delta: 41.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 664.84ms. Allocated memory is still 98.6MB. Free memory was 75.5MB in the beginning and 62.0MB in the end (delta: 13.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Preprocessor took 125.02ms. Allocated memory is still 98.6MB. Free memory was 62.0MB in the beginning and 58.5MB in the end (delta: 3.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1022.98ms. Allocated memory was 98.6MB in the beginning and 119.5MB in the end (delta: 21.0MB). Free memory was 58.5MB in the beginning and 80.8MB in the end (delta: -22.3MB). Peak memory consumption was 35.2MB. Max. memory is 16.1GB. * TraceAbstraction took 67610.84ms. Allocated memory was 119.5MB in the beginning and 302.0MB in the end (delta: 182.5MB). Free memory was 80.6MB in the beginning and 226.9MB in the end (delta: -146.2MB). Peak memory consumption was 36.2MB. Max. memory is 16.1GB. * Witness Printer took 204.70ms. Allocated memory is still 302.0MB. Free memory was 226.9MB in the beginning and 209.0MB in the end (delta: 17.8MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 670]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 65]: 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 28 procedures, 313 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 67.5s, OverallIterations: 51, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 51.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 23013 SdHoareTripleChecker+Valid, 42.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 22694 mSDsluCounter, 50348 SdHoareTripleChecker+Invalid, 36.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 35002 mSDsCounter, 7752 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 55939 IncrementalHoareTripleChecker+Invalid, 63691 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 7752 mSolverCounterUnsat, 15346 mSDtfsCounter, 55939 mSolverCounterSat, 0.5s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1506 GetRequests, 683 SyntacticMatches, 0 SemanticMatches, 823 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2781 ImplicationChecksByTransitivity, 14.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=831occurred in iteration=11, InterpolantAutomatonStates: 663, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.0s AutomataMinimizationTime, 51 MinimizatonAttempts, 2436 StatesRemovedByMinimization, 49 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 13.1s InterpolantComputationTime, 3810 NumberOfCodeBlocks, 3810 NumberOfCodeBlocksAsserted, 51 NumberOfCheckSat, 3759 ConstructedInterpolants, 0 QuantifiedInterpolants, 16006 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 51 InterpolantComputations, 51 PerfectInterpolantSequences, 204/204 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! [2021-11-19 05:09:54,045 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477ed157-9a1d-40bb-af54-73ffa40366aa/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE