./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 e19ca921 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/ntdrivers-simplified/floppy_simpl3.cil-2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1fa38cbba4031a56736a5ec3c724b1da0a42c893b0e9010b5807defb3e1b19fa --- Real Ultimate output --- This is Ultimate 0.2.2-dev-e19ca92 [2021-12-22 00:19:25,892 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-22 00:19:25,893 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-22 00:19:25,941 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-22 00:19:25,942 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-22 00:19:25,942 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-22 00:19:25,945 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-22 00:19:25,948 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-22 00:19:25,950 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-22 00:19:25,951 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-22 00:19:25,952 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-22 00:19:25,953 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-22 00:19:25,954 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-22 00:19:25,957 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-22 00:19:25,959 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-22 00:19:25,959 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-22 00:19:25,960 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-22 00:19:25,962 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-22 00:19:25,963 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-22 00:19:25,965 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-22 00:19:25,968 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-22 00:19:25,969 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-22 00:19:25,969 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-22 00:19:25,970 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-22 00:19:25,972 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-22 00:19:25,974 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-22 00:19:25,974 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-22 00:19:25,975 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-22 00:19:25,976 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-22 00:19:25,976 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-22 00:19:25,976 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-22 00:19:25,977 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-22 00:19:25,978 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-22 00:19:25,979 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-22 00:19:25,979 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-22 00:19:25,980 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-22 00:19:25,981 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-22 00:19:25,981 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-22 00:19:25,982 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-22 00:19:25,982 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-22 00:19:25,983 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-22 00:19:25,984 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-12-22 00:19:26,001 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-22 00:19:26,005 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-22 00:19:26,006 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-22 00:19:26,006 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-22 00:19:26,007 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-22 00:19:26,007 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-22 00:19:26,007 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-22 00:19:26,007 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-22 00:19:26,008 INFO L138 SettingsManager]: * Use SBE=true [2021-12-22 00:19:26,008 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-22 00:19:26,008 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-22 00:19:26,008 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-22 00:19:26,009 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-22 00:19:26,009 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-22 00:19:26,009 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-22 00:19:26,009 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-22 00:19:26,009 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-22 00:19:26,009 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-12-22 00:19:26,009 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-22 00:19:26,010 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-22 00:19:26,010 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-22 00:19:26,010 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-22 00:19:26,010 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-22 00:19:26,010 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-22 00:19:26,010 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-22 00:19:26,010 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 00:19:26,011 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-22 00:19:26,011 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-22 00:19:26,012 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-22 00:19:26,012 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-22 00:19:26,012 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-22 00:19:26,012 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1fa38cbba4031a56736a5ec3c724b1da0a42c893b0e9010b5807defb3e1b19fa [2021-12-22 00:19:26,201 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-22 00:19:26,218 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-22 00:19:26,220 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-22 00:19:26,221 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-22 00:19:26,221 INFO L275 PluginConnector]: CDTParser initialized [2021-12-22 00:19:26,222 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ntdrivers-simplified/floppy_simpl3.cil-2.c [2021-12-22 00:19:26,278 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a7bbbd50/eedf7c3c72be4ae8827cbe493eb1aa4f/FLAG487876d33 [2021-12-22 00:19:26,631 INFO L306 CDTParser]: Found 1 translation units. [2021-12-22 00:19:26,632 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ntdrivers-simplified/floppy_simpl3.cil-2.c [2021-12-22 00:19:26,654 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a7bbbd50/eedf7c3c72be4ae8827cbe493eb1aa4f/FLAG487876d33 [2021-12-22 00:19:27,017 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a7bbbd50/eedf7c3c72be4ae8827cbe493eb1aa4f [2021-12-22 00:19:27,020 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-22 00:19:27,021 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-22 00:19:27,023 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-22 00:19:27,024 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-22 00:19:27,026 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-22 00:19:27,026 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 12:19:27" (1/1) ... [2021-12-22 00:19:27,028 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b59b8eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:19:27, skipping insertion in model container [2021-12-22 00:19:27,028 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 12:19:27" (1/1) ... [2021-12-22 00:19:27,032 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-22 00:19:27,073 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 00:19:27,179 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ntdrivers-simplified/floppy_simpl3.cil-2.c[2713,2726] [2021-12-22 00:19:27,274 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 00:19:27,292 INFO L203 MainTranslator]: Completed pre-run [2021-12-22 00:19:27,308 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ntdrivers-simplified/floppy_simpl3.cil-2.c[2713,2726] [2021-12-22 00:19:27,366 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 00:19:27,380 INFO L208 MainTranslator]: Completed translation [2021-12-22 00:19:27,382 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:19:27 WrapperNode [2021-12-22 00:19:27,382 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-22 00:19:27,383 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-22 00:19:27,383 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-22 00:19:27,383 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-22 00:19:27,387 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:19:27" (1/1) ... [2021-12-22 00:19:27,409 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:19:27" (1/1) ... [2021-12-22 00:19:27,449 INFO L137 Inliner]: procedures = 38, calls = 62, calls flagged for inlining = 19, calls inlined = 19, statements flattened = 916 [2021-12-22 00:19:27,455 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-22 00:19:27,456 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-22 00:19:27,456 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-22 00:19:27,456 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-22 00:19:27,461 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:19:27" (1/1) ... [2021-12-22 00:19:27,462 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:19:27" (1/1) ... [2021-12-22 00:19:27,467 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:19:27" (1/1) ... [2021-12-22 00:19:27,467 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:19:27" (1/1) ... [2021-12-22 00:19:27,482 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:19:27" (1/1) ... [2021-12-22 00:19:27,495 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:19:27" (1/1) ... [2021-12-22 00:19:27,508 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:19:27" (1/1) ... [2021-12-22 00:19:27,511 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-22 00:19:27,517 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-22 00:19:27,518 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-22 00:19:27,518 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-22 00:19:27,519 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:19:27" (1/1) ... [2021-12-22 00:19:27,524 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 00:19:27,531 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 00:19:27,541 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-22 00:19:27,559 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-22 00:19:27,574 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-22 00:19:27,574 INFO L130 BoogieDeclarations]: Found specification of procedure IoSetDeviceInterfaceState [2021-12-22 00:19:27,575 INFO L138 BoogieDeclarations]: Found implementation of procedure IoSetDeviceInterfaceState [2021-12-22 00:19:27,575 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2021-12-22 00:19:27,575 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2021-12-22 00:19:27,575 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2021-12-22 00:19:27,575 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2021-12-22 00:19:27,575 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2021-12-22 00:19:27,575 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2021-12-22 00:19:27,575 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-22 00:19:27,576 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2021-12-22 00:19:27,576 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2021-12-22 00:19:27,576 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-22 00:19:27,576 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-22 00:19:27,717 INFO L234 CfgBuilder]: Building ICFG [2021-12-22 00:19:27,718 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-22 00:19:27,723 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-22 00:19:27,794 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2021-12-22 00:19:27,794 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2021-12-22 00:19:27,795 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-22 00:19:27,801 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2021-12-22 00:19:27,801 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2021-12-22 00:19:27,808 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-22 00:19:27,810 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-22 00:19:27,812 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-22 00:19:27,815 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-22 00:19:27,817 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-22 00:19:27,819 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-22 00:19:27,820 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-22 00:19:27,820 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-22 00:19:27,825 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-22 00:19:28,089 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##86: assume !false; [2021-12-22 00:19:28,089 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##85: assume false; [2021-12-22 00:19:28,089 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##171: assume !false; [2021-12-22 00:19:28,089 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##170: assume false; [2021-12-22 00:19:28,089 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##75: assume !false; [2021-12-22 00:19:28,090 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##74: assume false; [2021-12-22 00:19:28,090 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##45: assume !false; [2021-12-22 00:19:28,090 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##44: assume false; [2021-12-22 00:19:28,090 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##32: assume !false; [2021-12-22 00:19:28,090 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##31: assume false; [2021-12-22 00:19:28,090 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume false; [2021-12-22 00:19:28,090 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume !false; [2021-12-22 00:19:28,090 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##109: assume false; [2021-12-22 00:19:28,090 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##110: assume !false; [2021-12-22 00:19:28,091 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##119: assume !false; [2021-12-22 00:19:28,091 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##118: assume false; [2021-12-22 00:19:28,091 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##122: assume false; [2021-12-22 00:19:28,091 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##123: assume !false; [2021-12-22 00:19:28,092 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-22 00:19:28,113 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume !false; [2021-12-22 00:19:28,113 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##14: assume false; [2021-12-22 00:19:28,117 INFO L275 CfgBuilder]: Performing block encoding [2021-12-22 00:19:28,123 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-22 00:19:28,124 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-22 00:19:28,125 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 12:19:28 BoogieIcfgContainer [2021-12-22 00:19:28,125 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-22 00:19:28,127 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-22 00:19:28,127 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-22 00:19:28,129 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-22 00:19:28,129 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 12:19:27" (1/3) ... [2021-12-22 00:19:28,130 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29768e11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 12:19:28, skipping insertion in model container [2021-12-22 00:19:28,130 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:19:27" (2/3) ... [2021-12-22 00:19:28,130 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29768e11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 12:19:28, skipping insertion in model container [2021-12-22 00:19:28,130 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 12:19:28" (3/3) ... [2021-12-22 00:19:28,144 INFO L111 eAbstractionObserver]: Analyzing ICFG floppy_simpl3.cil-2.c [2021-12-22 00:19:28,148 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-22 00:19:28,148 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-22 00:19:28,184 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-22 00:19:28,189 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-22 00:19:28,189 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-22 00:19:28,216 INFO L276 IsEmpty]: Start isEmpty. Operand has 238 states, 193 states have (on average 1.4870466321243523) internal successors, (287), 215 states have internal predecessors, (287), 37 states have call successors, (37), 5 states have call predecessors, (37), 5 states have return successors, (37), 32 states have call predecessors, (37), 37 states have call successors, (37) [2021-12-22 00:19:28,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-12-22 00:19:28,221 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:19:28,221 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 00:19:28,222 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-22 00:19:28,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:19:28,225 INFO L85 PathProgramCache]: Analyzing trace with hash -379437591, now seen corresponding path program 1 times [2021-12-22 00:19:28,231 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 00:19:28,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209064487] [2021-12-22 00:19:28,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:19:28,232 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 00:19:28,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:19:28,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 00:19:28,338 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 00:19:28,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209064487] [2021-12-22 00:19:28,338 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209064487] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 00:19:28,339 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 00:19:28,339 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 00:19:28,340 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278614559] [2021-12-22 00:19:28,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 00:19:28,343 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 00:19:28,343 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 00:19:28,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 00:19:28,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 00:19:28,363 INFO L87 Difference]: Start difference. First operand has 238 states, 193 states have (on average 1.4870466321243523) internal successors, (287), 215 states have internal predecessors, (287), 37 states have call successors, (37), 5 states have call predecessors, (37), 5 states have return successors, (37), 32 states have call predecessors, (37), 37 states have call successors, (37) Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:19:28,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:19:28,402 INFO L93 Difference]: Finished difference Result 237 states and 338 transitions. [2021-12-22 00:19:28,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 00:19:28,404 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-12-22 00:19:28,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:19:28,411 INFO L225 Difference]: With dead ends: 237 [2021-12-22 00:19:28,412 INFO L226 Difference]: Without dead ends: 235 [2021-12-22 00:19:28,413 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 00:19:28,415 INFO L933 BasicCegarLoop]: 336 mSDtfsCounter, 194 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 448 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 00:19:28,416 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [213 Valid, 448 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 00:19:28,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2021-12-22 00:19:28,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 234. [2021-12-22 00:19:28,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 191 states have (on average 1.4607329842931938) internal successors, (279), 211 states have internal predecessors, (279), 37 states have call successors, (37), 5 states have call predecessors, (37), 4 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2021-12-22 00:19:28,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 335 transitions. [2021-12-22 00:19:28,451 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 335 transitions. Word has length 8 [2021-12-22 00:19:28,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:19:28,451 INFO L470 AbstractCegarLoop]: Abstraction has 234 states and 335 transitions. [2021-12-22 00:19:28,451 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:19:28,452 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 335 transitions. [2021-12-22 00:19:28,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-12-22 00:19:28,452 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:19:28,452 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 00:19:28,452 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-22 00:19:28,453 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-22 00:19:28,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:19:28,453 INFO L85 PathProgramCache]: Analyzing trace with hash 229440230, now seen corresponding path program 1 times [2021-12-22 00:19:28,453 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 00:19:28,454 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486760548] [2021-12-22 00:19:28,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:19:28,454 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 00:19:28,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:19:28,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 00:19:28,486 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 00:19:28,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486760548] [2021-12-22 00:19:28,486 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486760548] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 00:19:28,486 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 00:19:28,486 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-22 00:19:28,487 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619897838] [2021-12-22 00:19:28,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 00:19:28,488 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 00:19:28,488 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 00:19:28,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 00:19:28,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 00:19:28,489 INFO L87 Difference]: Start difference. First operand 234 states and 335 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:19:28,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:19:28,558 INFO L93 Difference]: Finished difference Result 233 states and 334 transitions. [2021-12-22 00:19:28,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 00:19:28,560 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-12-22 00:19:28,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:19:28,561 INFO L225 Difference]: With dead ends: 233 [2021-12-22 00:19:28,562 INFO L226 Difference]: Without dead ends: 229 [2021-12-22 00:19:28,562 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 00:19:28,565 INFO L933 BasicCegarLoop]: 334 mSDtfsCounter, 214 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 392 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 00:19:28,566 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [233 Valid, 392 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 00:19:28,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2021-12-22 00:19:28,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 229. [2021-12-22 00:19:28,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 187 states have (on average 1.4224598930481283) internal successors, (266), 206 states have internal predecessors, (266), 37 states have call successors, (37), 5 states have call predecessors, (37), 4 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2021-12-22 00:19:28,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 322 transitions. [2021-12-22 00:19:28,584 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 322 transitions. Word has length 11 [2021-12-22 00:19:28,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:19:28,585 INFO L470 AbstractCegarLoop]: Abstraction has 229 states and 322 transitions. [2021-12-22 00:19:28,585 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:19:28,585 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 322 transitions. [2021-12-22 00:19:28,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-12-22 00:19:28,586 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:19:28,586 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 00:19:28,586 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-22 00:19:28,587 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-22 00:19:28,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:19:28,587 INFO L85 PathProgramCache]: Analyzing trace with hash 23733269, now seen corresponding path program 1 times [2021-12-22 00:19:28,588 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 00:19:28,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051026814] [2021-12-22 00:19:28,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:19:28,588 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 00:19:28,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:19:28,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 00:19:28,677 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 00:19:28,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051026814] [2021-12-22 00:19:28,677 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051026814] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 00:19:28,678 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 00:19:28,678 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 00:19:28,678 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126400295] [2021-12-22 00:19:28,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 00:19:28,679 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 00:19:28,679 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 00:19:28,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 00:19:28,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 00:19:28,680 INFO L87 Difference]: Start difference. First operand 229 states and 322 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:19:28,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:19:28,759 INFO L93 Difference]: Finished difference Result 344 states and 482 transitions. [2021-12-22 00:19:28,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 00:19:28,759 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-12-22 00:19:28,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:19:28,762 INFO L225 Difference]: With dead ends: 344 [2021-12-22 00:19:28,762 INFO L226 Difference]: Without dead ends: 343 [2021-12-22 00:19:28,762 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 00:19:28,767 INFO L933 BasicCegarLoop]: 412 mSDtfsCounter, 251 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 583 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 00:19:28,768 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [251 Valid, 583 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 00:19:28,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2021-12-22 00:19:28,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 326. [2021-12-22 00:19:28,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 281 states have (on average 1.3629893238434163) internal successors, (383), 285 states have internal predecessors, (383), 37 states have call successors, (37), 9 states have call predecessors, (37), 7 states have return successors, (40), 32 states have call predecessors, (40), 27 states have call successors, (40) [2021-12-22 00:19:28,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 460 transitions. [2021-12-22 00:19:28,797 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 460 transitions. Word has length 18 [2021-12-22 00:19:28,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:19:28,797 INFO L470 AbstractCegarLoop]: Abstraction has 326 states and 460 transitions. [2021-12-22 00:19:28,797 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:19:28,797 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 460 transitions. [2021-12-22 00:19:28,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-12-22 00:19:28,798 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:19:28,798 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 00:19:28,799 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-22 00:19:28,799 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-22 00:19:28,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:19:28,799 INFO L85 PathProgramCache]: Analyzing trace with hash -1035240094, now seen corresponding path program 1 times [2021-12-22 00:19:28,800 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 00:19:28,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983982311] [2021-12-22 00:19:28,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:19:28,800 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 00:19:28,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:19:28,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 00:19:28,868 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 00:19:28,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983982311] [2021-12-22 00:19:28,868 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983982311] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 00:19:28,868 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 00:19:28,868 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 00:19:28,869 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357779794] [2021-12-22 00:19:28,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 00:19:28,869 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 00:19:28,870 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 00:19:28,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 00:19:28,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 00:19:28,871 INFO L87 Difference]: Start difference. First operand 326 states and 460 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:19:28,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:19:28,890 INFO L93 Difference]: Finished difference Result 512 states and 717 transitions. [2021-12-22 00:19:28,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 00:19:28,890 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-12-22 00:19:28,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:19:28,894 INFO L225 Difference]: With dead ends: 512 [2021-12-22 00:19:28,894 INFO L226 Difference]: Without dead ends: 512 [2021-12-22 00:19:28,894 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 00:19:28,899 INFO L933 BasicCegarLoop]: 314 mSDtfsCounter, 273 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 273 SdHoareTripleChecker+Valid, 479 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 00:19:28,900 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [273 Valid, 479 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 00:19:28,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 512 states. [2021-12-22 00:19:28,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 512 to 485. [2021-12-22 00:19:28,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 485 states, 423 states have (on average 1.3617021276595744) internal successors, (576), 424 states have internal predecessors, (576), 47 states have call successors, (47), 17 states have call predecessors, (47), 14 states have return successors, (61), 44 states have call predecessors, (61), 39 states have call successors, (61) [2021-12-22 00:19:28,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 485 states to 485 states and 684 transitions. [2021-12-22 00:19:28,918 INFO L78 Accepts]: Start accepts. Automaton has 485 states and 684 transitions. Word has length 19 [2021-12-22 00:19:28,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:19:28,918 INFO L470 AbstractCegarLoop]: Abstraction has 485 states and 684 transitions. [2021-12-22 00:19:28,918 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:19:28,918 INFO L276 IsEmpty]: Start isEmpty. Operand 485 states and 684 transitions. [2021-12-22 00:19:28,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-12-22 00:19:28,919 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:19:28,919 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] [2021-12-22 00:19:28,919 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-22 00:19:28,919 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-22 00:19:28,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:19:28,920 INFO L85 PathProgramCache]: Analyzing trace with hash -1224032788, now seen corresponding path program 1 times [2021-12-22 00:19:28,920 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 00:19:28,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844852140] [2021-12-22 00:19:28,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:19:28,921 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 00:19:28,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:19:28,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 00:19:28,998 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 00:19:28,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844852140] [2021-12-22 00:19:28,998 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844852140] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 00:19:28,998 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 00:19:28,998 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 00:19:28,998 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145940990] [2021-12-22 00:19:28,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 00:19:28,999 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 00:19:29,000 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 00:19:29,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 00:19:29,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 00:19:29,000 INFO L87 Difference]: Start difference. First operand 485 states and 684 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:19:29,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:19:29,016 INFO L93 Difference]: Finished difference Result 556 states and 772 transitions. [2021-12-22 00:19:29,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 00:19:29,016 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-12-22 00:19:29,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:19:29,018 INFO L225 Difference]: With dead ends: 556 [2021-12-22 00:19:29,019 INFO L226 Difference]: Without dead ends: 556 [2021-12-22 00:19:29,019 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 00:19:29,019 INFO L933 BasicCegarLoop]: 304 mSDtfsCounter, 277 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 384 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 00:19:29,020 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [277 Valid, 384 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 00:19:29,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 556 states. [2021-12-22 00:19:29,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 556 to 523. [2021-12-22 00:19:29,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 523 states, 455 states have (on average 1.3604395604395605) internal successors, (619), 462 states have internal predecessors, (619), 49 states have call successors, (49), 20 states have call predecessors, (49), 18 states have return successors, (65), 42 states have call predecessors, (65), 42 states have call successors, (65) [2021-12-22 00:19:29,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 523 states to 523 states and 733 transitions. [2021-12-22 00:19:29,030 INFO L78 Accepts]: Start accepts. Automaton has 523 states and 733 transitions. Word has length 22 [2021-12-22 00:19:29,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:19:29,031 INFO L470 AbstractCegarLoop]: Abstraction has 523 states and 733 transitions. [2021-12-22 00:19:29,031 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:19:29,031 INFO L276 IsEmpty]: Start isEmpty. Operand 523 states and 733 transitions. [2021-12-22 00:19:29,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-12-22 00:19:29,032 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:19:29,032 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] [2021-12-22 00:19:29,032 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-22 00:19:29,033 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-22 00:19:29,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:19:29,033 INFO L85 PathProgramCache]: Analyzing trace with hash -222747689, now seen corresponding path program 1 times [2021-12-22 00:19:29,033 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 00:19:29,033 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563777556] [2021-12-22 00:19:29,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:19:29,034 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 00:19:29,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:19:29,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 00:19:29,057 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 00:19:29,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563777556] [2021-12-22 00:19:29,057 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563777556] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 00:19:29,058 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 00:19:29,058 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 00:19:29,058 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717831998] [2021-12-22 00:19:29,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 00:19:29,058 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 00:19:29,058 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 00:19:29,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 00:19:29,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 00:19:29,059 INFO L87 Difference]: Start difference. First operand 523 states and 733 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:19:29,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:19:29,114 INFO L93 Difference]: Finished difference Result 803 states and 1126 transitions. [2021-12-22 00:19:29,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 00:19:29,115 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-12-22 00:19:29,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:19:29,117 INFO L225 Difference]: With dead ends: 803 [2021-12-22 00:19:29,118 INFO L226 Difference]: Without dead ends: 803 [2021-12-22 00:19:29,118 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 00:19:29,118 INFO L933 BasicCegarLoop]: 404 mSDtfsCounter, 120 mSDsluCounter, 258 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 662 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 00:19:29,119 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [120 Valid, 662 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 00:19:29,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 803 states. [2021-12-22 00:19:29,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 803 to 614. [2021-12-22 00:19:29,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 614 states, 540 states have (on average 1.3685185185185185) internal successors, (739), 550 states have internal predecessors, (739), 51 states have call successors, (51), 22 states have call predecessors, (51), 22 states have return successors, (72), 43 states have call predecessors, (72), 44 states have call successors, (72) [2021-12-22 00:19:29,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 614 states to 614 states and 862 transitions. [2021-12-22 00:19:29,133 INFO L78 Accepts]: Start accepts. Automaton has 614 states and 862 transitions. Word has length 27 [2021-12-22 00:19:29,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:19:29,133 INFO L470 AbstractCegarLoop]: Abstraction has 614 states and 862 transitions. [2021-12-22 00:19:29,133 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:19:29,133 INFO L276 IsEmpty]: Start isEmpty. Operand 614 states and 862 transitions. [2021-12-22 00:19:29,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-12-22 00:19:29,134 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:19:29,135 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] [2021-12-22 00:19:29,135 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-22 00:19:29,135 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-22 00:19:29,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:19:29,135 INFO L85 PathProgramCache]: Analyzing trace with hash 1446649383, now seen corresponding path program 1 times [2021-12-22 00:19:29,136 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 00:19:29,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198768913] [2021-12-22 00:19:29,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:19:29,136 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 00:19:29,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:19:29,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 00:19:29,196 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 00:19:29,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198768913] [2021-12-22 00:19:29,196 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198768913] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 00:19:29,196 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 00:19:29,196 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 00:19:29,196 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805097396] [2021-12-22 00:19:29,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 00:19:29,197 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 00:19:29,197 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 00:19:29,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 00:19:29,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-22 00:19:29,197 INFO L87 Difference]: Start difference. First operand 614 states and 862 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:19:29,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:19:29,340 INFO L93 Difference]: Finished difference Result 639 states and 882 transitions. [2021-12-22 00:19:29,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-22 00:19:29,340 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-12-22 00:19:29,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:19:29,342 INFO L225 Difference]: With dead ends: 639 [2021-12-22 00:19:29,343 INFO L226 Difference]: Without dead ends: 639 [2021-12-22 00:19:29,343 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-22 00:19:29,343 INFO L933 BasicCegarLoop]: 391 mSDtfsCounter, 513 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 516 SdHoareTripleChecker+Valid, 527 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 00:19:29,344 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [516 Valid, 527 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 00:19:29,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 639 states. [2021-12-22 00:19:29,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 639 to 605. [2021-12-22 00:19:29,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 605 states, 531 states have (on average 1.3521657250470809) internal successors, (718), 541 states have internal predecessors, (718), 51 states have call successors, (51), 22 states have call predecessors, (51), 22 states have return successors, (72), 43 states have call predecessors, (72), 44 states have call successors, (72) [2021-12-22 00:19:29,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 605 states to 605 states and 841 transitions. [2021-12-22 00:19:29,354 INFO L78 Accepts]: Start accepts. Automaton has 605 states and 841 transitions. Word has length 28 [2021-12-22 00:19:29,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:19:29,354 INFO L470 AbstractCegarLoop]: Abstraction has 605 states and 841 transitions. [2021-12-22 00:19:29,354 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:19:29,355 INFO L276 IsEmpty]: Start isEmpty. Operand 605 states and 841 transitions. [2021-12-22 00:19:29,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-12-22 00:19:29,355 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:19:29,356 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] [2021-12-22 00:19:29,356 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-22 00:19:29,356 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-22 00:19:29,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:19:29,356 INFO L85 PathProgramCache]: Analyzing trace with hash -266296252, now seen corresponding path program 1 times [2021-12-22 00:19:29,357 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 00:19:29,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837293228] [2021-12-22 00:19:29,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:19:29,357 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 00:19:29,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:19:29,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-22 00:19:29,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:19:29,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 00:19:29,382 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 00:19:29,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837293228] [2021-12-22 00:19:29,383 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837293228] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 00:19:29,383 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 00:19:29,383 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 00:19:29,383 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535635795] [2021-12-22 00:19:29,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 00:19:29,383 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 00:19:29,384 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 00:19:29,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 00:19:29,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-22 00:19:29,384 INFO L87 Difference]: Start difference. First operand 605 states and 841 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-22 00:19:29,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:19:29,508 INFO L93 Difference]: Finished difference Result 645 states and 893 transitions. [2021-12-22 00:19:29,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 00:19:29,509 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 29 [2021-12-22 00:19:29,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:19:29,512 INFO L225 Difference]: With dead ends: 645 [2021-12-22 00:19:29,512 INFO L226 Difference]: Without dead ends: 645 [2021-12-22 00:19:29,512 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-22 00:19:29,513 INFO L933 BasicCegarLoop]: 286 mSDtfsCounter, 64 mSDsluCounter, 449 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 735 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 00:19:29,513 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [64 Valid, 735 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 00:19:29,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 645 states. [2021-12-22 00:19:29,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 645 to 626. [2021-12-22 00:19:29,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 626 states, 552 states have (on average 1.3496376811594204) internal successors, (745), 561 states have internal predecessors, (745), 51 states have call successors, (51), 22 states have call predecessors, (51), 22 states have return successors, (72), 43 states have call predecessors, (72), 44 states have call successors, (72) [2021-12-22 00:19:29,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 626 states to 626 states and 868 transitions. [2021-12-22 00:19:29,528 INFO L78 Accepts]: Start accepts. Automaton has 626 states and 868 transitions. Word has length 29 [2021-12-22 00:19:29,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:19:29,529 INFO L470 AbstractCegarLoop]: Abstraction has 626 states and 868 transitions. [2021-12-22 00:19:29,529 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-22 00:19:29,529 INFO L276 IsEmpty]: Start isEmpty. Operand 626 states and 868 transitions. [2021-12-22 00:19:29,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-12-22 00:19:29,532 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:19:29,532 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] [2021-12-22 00:19:29,532 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-22 00:19:29,533 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-22 00:19:29,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:19:29,533 INFO L85 PathProgramCache]: Analyzing trace with hash 786936120, now seen corresponding path program 1 times [2021-12-22 00:19:29,533 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 00:19:29,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584985271] [2021-12-22 00:19:29,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:19:29,534 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 00:19:29,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:19:29,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-22 00:19:29,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:19:29,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 00:19:29,595 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 00:19:29,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584985271] [2021-12-22 00:19:29,595 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584985271] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 00:19:29,595 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 00:19:29,595 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-22 00:19:29,595 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065020376] [2021-12-22 00:19:29,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 00:19:29,596 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 00:19:29,596 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 00:19:29,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 00:19:29,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-22 00:19:29,597 INFO L87 Difference]: Start difference. First operand 626 states and 868 transitions. Second operand has 6 states, 6 states have (on average 4.5) internal successors, (27), 5 states have internal predecessors, (27), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-22 00:19:29,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:19:29,736 INFO L93 Difference]: Finished difference Result 645 states and 892 transitions. [2021-12-22 00:19:29,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-22 00:19:29,736 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 5 states have internal predecessors, (27), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 30 [2021-12-22 00:19:29,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:19:29,738 INFO L225 Difference]: With dead ends: 645 [2021-12-22 00:19:29,738 INFO L226 Difference]: Without dead ends: 645 [2021-12-22 00:19:29,739 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-12-22 00:19:29,756 INFO L933 BasicCegarLoop]: 285 mSDtfsCounter, 393 mSDsluCounter, 416 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 400 SdHoareTripleChecker+Valid, 701 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 00:19:29,756 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [400 Valid, 701 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 00:19:29,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 645 states. [2021-12-22 00:19:29,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 645 to 626. [2021-12-22 00:19:29,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 626 states, 552 states have (on average 1.3478260869565217) internal successors, (744), 561 states have internal predecessors, (744), 51 states have call successors, (51), 22 states have call predecessors, (51), 22 states have return successors, (72), 43 states have call predecessors, (72), 44 states have call successors, (72) [2021-12-22 00:19:29,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 626 states to 626 states and 867 transitions. [2021-12-22 00:19:29,768 INFO L78 Accepts]: Start accepts. Automaton has 626 states and 867 transitions. Word has length 30 [2021-12-22 00:19:29,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:19:29,768 INFO L470 AbstractCegarLoop]: Abstraction has 626 states and 867 transitions. [2021-12-22 00:19:29,768 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 5 states have internal predecessors, (27), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-22 00:19:29,769 INFO L276 IsEmpty]: Start isEmpty. Operand 626 states and 867 transitions. [2021-12-22 00:19:29,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-12-22 00:19:29,769 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:19:29,769 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] [2021-12-22 00:19:29,769 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-22 00:19:29,769 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-22 00:19:29,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:19:29,770 INFO L85 PathProgramCache]: Analyzing trace with hash -1995000776, now seen corresponding path program 1 times [2021-12-22 00:19:29,770 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 00:19:29,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473416342] [2021-12-22 00:19:29,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:19:29,770 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 00:19:29,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:19:29,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 00:19:29,823 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 00:19:29,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473416342] [2021-12-22 00:19:29,824 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473416342] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 00:19:29,824 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 00:19:29,824 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 00:19:29,824 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067298802] [2021-12-22 00:19:29,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 00:19:29,824 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 00:19:29,824 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 00:19:29,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 00:19:29,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 00:19:29,825 INFO L87 Difference]: Start difference. First operand 626 states and 867 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:19:29,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:19:29,872 INFO L93 Difference]: Finished difference Result 638 states and 883 transitions. [2021-12-22 00:19:29,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 00:19:29,873 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-12-22 00:19:29,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:19:29,875 INFO L225 Difference]: With dead ends: 638 [2021-12-22 00:19:29,875 INFO L226 Difference]: Without dead ends: 638 [2021-12-22 00:19:29,875 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 00:19:29,876 INFO L933 BasicCegarLoop]: 306 mSDtfsCounter, 16 mSDsluCounter, 241 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 547 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 00:19:29,876 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 547 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 00:19:29,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 638 states. [2021-12-22 00:19:29,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 638 to 637. [2021-12-22 00:19:29,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 637 states, 563 states have (on average 1.3463587921847247) internal successors, (758), 571 states have internal predecessors, (758), 51 states have call successors, (51), 23 states have call predecessors, (51), 22 states have return successors, (72), 43 states have call predecessors, (72), 44 states have call successors, (72) [2021-12-22 00:19:29,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 637 states to 637 states and 881 transitions. [2021-12-22 00:19:29,902 INFO L78 Accepts]: Start accepts. Automaton has 637 states and 881 transitions. Word has length 30 [2021-12-22 00:19:29,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:19:29,905 INFO L470 AbstractCegarLoop]: Abstraction has 637 states and 881 transitions. [2021-12-22 00:19:29,905 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:19:29,905 INFO L276 IsEmpty]: Start isEmpty. Operand 637 states and 881 transitions. [2021-12-22 00:19:29,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-12-22 00:19:29,906 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:19:29,906 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] [2021-12-22 00:19:29,906 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-22 00:19:29,906 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-22 00:19:29,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:19:29,906 INFO L85 PathProgramCache]: Analyzing trace with hash 2060099377, now seen corresponding path program 1 times [2021-12-22 00:19:29,906 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 00:19:29,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16544991] [2021-12-22 00:19:29,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:19:29,907 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 00:19:29,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:19:29,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-22 00:19:29,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:19:29,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 00:19:29,996 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 00:19:29,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16544991] [2021-12-22 00:19:29,996 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16544991] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 00:19:29,996 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 00:19:29,996 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-22 00:19:29,996 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228585236] [2021-12-22 00:19:29,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 00:19:29,997 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 00:19:29,997 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 00:19:29,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 00:19:29,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-22 00:19:29,998 INFO L87 Difference]: Start difference. First operand 637 states and 881 transitions. Second operand has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 5 states have internal predecessors, (28), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-22 00:19:30,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:19:30,164 INFO L93 Difference]: Finished difference Result 656 states and 905 transitions. [2021-12-22 00:19:30,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-22 00:19:30,165 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 5 states have internal predecessors, (28), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 31 [2021-12-22 00:19:30,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:19:30,168 INFO L225 Difference]: With dead ends: 656 [2021-12-22 00:19:30,168 INFO L226 Difference]: Without dead ends: 656 [2021-12-22 00:19:30,168 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-12-22 00:19:30,169 INFO L933 BasicCegarLoop]: 287 mSDtfsCounter, 374 mSDsluCounter, 624 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 381 SdHoareTripleChecker+Valid, 911 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 00:19:30,169 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [381 Valid, 911 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 249 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 00:19:30,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 656 states. [2021-12-22 00:19:30,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 656 to 637. [2021-12-22 00:19:30,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 637 states, 563 states have (on average 1.344582593250444) internal successors, (757), 571 states have internal predecessors, (757), 51 states have call successors, (51), 23 states have call predecessors, (51), 22 states have return successors, (72), 43 states have call predecessors, (72), 44 states have call successors, (72) [2021-12-22 00:19:30,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 637 states to 637 states and 880 transitions. [2021-12-22 00:19:30,182 INFO L78 Accepts]: Start accepts. Automaton has 637 states and 880 transitions. Word has length 31 [2021-12-22 00:19:30,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:19:30,182 INFO L470 AbstractCegarLoop]: Abstraction has 637 states and 880 transitions. [2021-12-22 00:19:30,182 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 5 states have internal predecessors, (28), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-22 00:19:30,182 INFO L276 IsEmpty]: Start isEmpty. Operand 637 states and 880 transitions. [2021-12-22 00:19:30,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-12-22 00:19:30,184 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:19:30,184 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] [2021-12-22 00:19:30,184 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-22 00:19:30,184 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-22 00:19:30,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:19:30,185 INFO L85 PathProgramCache]: Analyzing trace with hash -477345279, now seen corresponding path program 1 times [2021-12-22 00:19:30,185 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 00:19:30,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725164196] [2021-12-22 00:19:30,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:19:30,185 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 00:19:30,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:19:30,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-22 00:19:30,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:19:30,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 00:19:30,225 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 00:19:30,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725164196] [2021-12-22 00:19:30,226 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725164196] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 00:19:30,226 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 00:19:30,226 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-22 00:19:30,226 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306634025] [2021-12-22 00:19:30,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 00:19:30,227 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 00:19:30,227 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 00:19:30,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 00:19:30,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-22 00:19:30,228 INFO L87 Difference]: Start difference. First operand 637 states and 880 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-22 00:19:30,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:19:30,310 INFO L93 Difference]: Finished difference Result 665 states and 914 transitions. [2021-12-22 00:19:30,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 00:19:30,310 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 32 [2021-12-22 00:19:30,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:19:30,313 INFO L225 Difference]: With dead ends: 665 [2021-12-22 00:19:30,313 INFO L226 Difference]: Without dead ends: 652 [2021-12-22 00:19:30,313 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-22 00:19:30,314 INFO L933 BasicCegarLoop]: 295 mSDtfsCounter, 52 mSDsluCounter, 778 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 1073 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 00:19:30,314 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 1073 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 00:19:30,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 652 states. [2021-12-22 00:19:30,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 652 to 635. [2021-12-22 00:19:30,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 635 states, 562 states have (on average 1.3434163701067616) internal successors, (755), 570 states have internal predecessors, (755), 50 states have call successors, (50), 23 states have call predecessors, (50), 22 states have return successors, (71), 42 states have call predecessors, (71), 43 states have call successors, (71) [2021-12-22 00:19:30,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 635 states to 635 states and 876 transitions. [2021-12-22 00:19:30,326 INFO L78 Accepts]: Start accepts. Automaton has 635 states and 876 transitions. Word has length 32 [2021-12-22 00:19:30,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:19:30,326 INFO L470 AbstractCegarLoop]: Abstraction has 635 states and 876 transitions. [2021-12-22 00:19:30,326 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-22 00:19:30,326 INFO L276 IsEmpty]: Start isEmpty. Operand 635 states and 876 transitions. [2021-12-22 00:19:30,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-12-22 00:19:30,327 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:19:30,327 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] [2021-12-22 00:19:30,327 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-22 00:19:30,328 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-22 00:19:30,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:19:30,328 INFO L85 PathProgramCache]: Analyzing trace with hash 1919528188, now seen corresponding path program 1 times [2021-12-22 00:19:30,328 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 00:19:30,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600210147] [2021-12-22 00:19:30,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:19:30,329 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 00:19:30,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:19:30,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 00:19:30,380 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 00:19:30,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600210147] [2021-12-22 00:19:30,380 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600210147] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 00:19:30,380 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 00:19:30,380 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 00:19:30,380 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695779999] [2021-12-22 00:19:30,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 00:19:30,381 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 00:19:30,381 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 00:19:30,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 00:19:30,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 00:19:30,381 INFO L87 Difference]: Start difference. First operand 635 states and 876 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:19:30,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:19:30,411 INFO L93 Difference]: Finished difference Result 643 states and 887 transitions. [2021-12-22 00:19:30,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 00:19:30,411 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-12-22 00:19:30,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:19:30,413 INFO L225 Difference]: With dead ends: 643 [2021-12-22 00:19:30,413 INFO L226 Difference]: Without dead ends: 643 [2021-12-22 00:19:30,414 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 00:19:30,415 INFO L933 BasicCegarLoop]: 304 mSDtfsCounter, 5 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 558 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 00:19:30,415 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 558 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 00:19:30,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2021-12-22 00:19:30,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 643. [2021-12-22 00:19:30,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 643 states, 570 states have (on average 1.343859649122807) internal successors, (766), 578 states have internal predecessors, (766), 50 states have call successors, (50), 23 states have call predecessors, (50), 22 states have return successors, (71), 42 states have call predecessors, (71), 43 states have call successors, (71) [2021-12-22 00:19:30,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 887 transitions. [2021-12-22 00:19:30,440 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 887 transitions. Word has length 34 [2021-12-22 00:19:30,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:19:30,440 INFO L470 AbstractCegarLoop]: Abstraction has 643 states and 887 transitions. [2021-12-22 00:19:30,441 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:19:30,441 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 887 transitions. [2021-12-22 00:19:30,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-12-22 00:19:30,441 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:19:30,442 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] [2021-12-22 00:19:30,442 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-22 00:19:30,442 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-22 00:19:30,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:19:30,444 INFO L85 PathProgramCache]: Analyzing trace with hash 197237323, now seen corresponding path program 1 times [2021-12-22 00:19:30,444 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 00:19:30,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298531021] [2021-12-22 00:19:30,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:19:30,444 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 00:19:30,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:19:30,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 00:19:30,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:19:30,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 00:19:30,516 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 00:19:30,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298531021] [2021-12-22 00:19:30,517 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298531021] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 00:19:30,517 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 00:19:30,517 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-22 00:19:30,517 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193305243] [2021-12-22 00:19:30,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 00:19:30,517 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 00:19:30,518 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 00:19:30,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 00:19:30,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-22 00:19:30,519 INFO L87 Difference]: Start difference. First operand 643 states and 887 transitions. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-22 00:19:30,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:19:30,674 INFO L93 Difference]: Finished difference Result 468 states and 616 transitions. [2021-12-22 00:19:30,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-22 00:19:30,682 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 38 [2021-12-22 00:19:30,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:19:30,684 INFO L225 Difference]: With dead ends: 468 [2021-12-22 00:19:30,684 INFO L226 Difference]: Without dead ends: 468 [2021-12-22 00:19:30,684 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-12-22 00:19:30,685 INFO L933 BasicCegarLoop]: 347 mSDtfsCounter, 382 mSDsluCounter, 477 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 384 SdHoareTripleChecker+Valid, 824 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 00:19:30,686 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [384 Valid, 824 Invalid, 235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 00:19:30,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 468 states. [2021-12-22 00:19:30,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 468 to 427. [2021-12-22 00:19:30,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 427 states, 375 states have (on average 1.312) internal successors, (492), 383 states have internal predecessors, (492), 35 states have call successors, (35), 16 states have call predecessors, (35), 16 states have return successors, (39), 28 states have call predecessors, (39), 28 states have call successors, (39) [2021-12-22 00:19:30,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 566 transitions. [2021-12-22 00:19:30,703 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 566 transitions. Word has length 38 [2021-12-22 00:19:30,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:19:30,704 INFO L470 AbstractCegarLoop]: Abstraction has 427 states and 566 transitions. [2021-12-22 00:19:30,704 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-22 00:19:30,704 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 566 transitions. [2021-12-22 00:19:30,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-12-22 00:19:30,705 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:19:30,705 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] [2021-12-22 00:19:30,705 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-22 00:19:30,706 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-22 00:19:30,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:19:30,706 INFO L85 PathProgramCache]: Analyzing trace with hash 1089851695, now seen corresponding path program 1 times [2021-12-22 00:19:30,706 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 00:19:30,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865603747] [2021-12-22 00:19:30,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:19:30,707 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 00:19:30,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:19:30,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 00:19:30,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:19:30,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 00:19:30,843 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 00:19:30,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865603747] [2021-12-22 00:19:30,844 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865603747] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 00:19:30,844 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 00:19:30,844 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 00:19:30,844 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260039031] [2021-12-22 00:19:30,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 00:19:30,845 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 00:19:30,845 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 00:19:30,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 00:19:30,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 00:19:30,846 INFO L87 Difference]: Start difference. First operand 427 states and 566 transitions. Second operand has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 5 states have internal predecessors, (37), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-22 00:19:30,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:19:30,966 INFO L93 Difference]: Finished difference Result 422 states and 554 transitions. [2021-12-22 00:19:30,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 00:19:30,967 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 5 states have internal predecessors, (37), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 41 [2021-12-22 00:19:30,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:19:30,968 INFO L225 Difference]: With dead ends: 422 [2021-12-22 00:19:30,968 INFO L226 Difference]: Without dead ends: 422 [2021-12-22 00:19:30,970 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-12-22 00:19:30,970 INFO L933 BasicCegarLoop]: 303 mSDtfsCounter, 74 mSDsluCounter, 1304 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 1607 SdHoareTripleChecker+Invalid, 224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 00:19:30,971 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [74 Valid, 1607 Invalid, 224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 00:19:30,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2021-12-22 00:19:30,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 410. [2021-12-22 00:19:30,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 410 states, 359 states have (on average 1.3008356545961002) internal successors, (467), 366 states have internal predecessors, (467), 34 states have call successors, (34), 16 states have call predecessors, (34), 16 states have return successors, (39), 28 states have call predecessors, (39), 28 states have call successors, (39) [2021-12-22 00:19:30,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 540 transitions. [2021-12-22 00:19:30,976 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 540 transitions. Word has length 41 [2021-12-22 00:19:30,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:19:30,977 INFO L470 AbstractCegarLoop]: Abstraction has 410 states and 540 transitions. [2021-12-22 00:19:30,977 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 5 states have internal predecessors, (37), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-22 00:19:30,977 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 540 transitions. [2021-12-22 00:19:30,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-12-22 00:19:30,978 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:19:30,978 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] [2021-12-22 00:19:30,978 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-22 00:19:30,978 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-22 00:19:30,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:19:30,978 INFO L85 PathProgramCache]: Analyzing trace with hash 738484898, now seen corresponding path program 1 times [2021-12-22 00:19:30,979 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 00:19:30,979 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828130023] [2021-12-22 00:19:30,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:19:30,979 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 00:19:30,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:19:31,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-22 00:19:31,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:19:31,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 00:19:31,026 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 00:19:31,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828130023] [2021-12-22 00:19:31,027 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828130023] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 00:19:31,028 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 00:19:31,028 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 00:19:31,028 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932872771] [2021-12-22 00:19:31,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 00:19:31,028 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 00:19:31,028 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 00:19:31,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 00:19:31,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-22 00:19:31,029 INFO L87 Difference]: Start difference. First operand 410 states and 540 transitions. Second operand has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 6 states have internal predecessors, (37), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-22 00:19:31,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:19:31,275 INFO L93 Difference]: Finished difference Result 447 states and 582 transitions. [2021-12-22 00:19:31,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-22 00:19:31,276 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 6 states have internal predecessors, (37), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 40 [2021-12-22 00:19:31,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:19:31,277 INFO L225 Difference]: With dead ends: 447 [2021-12-22 00:19:31,277 INFO L226 Difference]: Without dead ends: 447 [2021-12-22 00:19:31,277 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2021-12-22 00:19:31,278 INFO L933 BasicCegarLoop]: 296 mSDtfsCounter, 357 mSDsluCounter, 832 mSDsCounter, 0 mSdLazyCounter, 371 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 365 SdHoareTripleChecker+Valid, 1128 SdHoareTripleChecker+Invalid, 437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-22 00:19:31,278 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [365 Valid, 1128 Invalid, 437 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 371 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-22 00:19:31,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2021-12-22 00:19:31,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 410. [2021-12-22 00:19:31,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 410 states, 359 states have (on average 1.2952646239554317) internal successors, (465), 366 states have internal predecessors, (465), 34 states have call successors, (34), 16 states have call predecessors, (34), 16 states have return successors, (39), 28 states have call predecessors, (39), 28 states have call successors, (39) [2021-12-22 00:19:31,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 538 transitions. [2021-12-22 00:19:31,284 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 538 transitions. Word has length 40 [2021-12-22 00:19:31,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:19:31,284 INFO L470 AbstractCegarLoop]: Abstraction has 410 states and 538 transitions. [2021-12-22 00:19:31,284 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 6 states have internal predecessors, (37), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-22 00:19:31,284 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 538 transitions. [2021-12-22 00:19:31,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-12-22 00:19:31,285 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:19:31,285 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] [2021-12-22 00:19:31,285 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-22 00:19:31,285 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-22 00:19:31,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:19:31,286 INFO L85 PathProgramCache]: Analyzing trace with hash 1982956471, now seen corresponding path program 1 times [2021-12-22 00:19:31,286 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 00:19:31,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111167192] [2021-12-22 00:19:31,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:19:31,286 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 00:19:31,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:19:31,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-22 00:19:31,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:19:31,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 00:19:31,314 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 00:19:31,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111167192] [2021-12-22 00:19:31,315 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111167192] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 00:19:31,315 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 00:19:31,315 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-22 00:19:31,315 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790943166] [2021-12-22 00:19:31,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 00:19:31,315 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 00:19:31,315 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 00:19:31,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 00:19:31,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-22 00:19:31,316 INFO L87 Difference]: Start difference. First operand 410 states and 538 transitions. Second operand has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 5 states have internal predecessors, (38), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-22 00:19:31,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:19:31,429 INFO L93 Difference]: Finished difference Result 436 states and 566 transitions. [2021-12-22 00:19:31,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-22 00:19:31,430 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 5 states have internal predecessors, (38), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 41 [2021-12-22 00:19:31,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:19:31,431 INFO L225 Difference]: With dead ends: 436 [2021-12-22 00:19:31,431 INFO L226 Difference]: Without dead ends: 404 [2021-12-22 00:19:31,431 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-12-22 00:19:31,432 INFO L933 BasicCegarLoop]: 288 mSDtfsCounter, 74 mSDsluCounter, 1032 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 1320 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 00:19:31,432 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [74 Valid, 1320 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 00:19:31,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2021-12-22 00:19:31,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 392. [2021-12-22 00:19:31,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 345 states have (on average 1.2927536231884058) internal successors, (446), 351 states have internal predecessors, (446), 32 states have call successors, (32), 14 states have call predecessors, (32), 14 states have return successors, (37), 27 states have call predecessors, (37), 26 states have call successors, (37) [2021-12-22 00:19:31,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 515 transitions. [2021-12-22 00:19:31,438 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 515 transitions. Word has length 41 [2021-12-22 00:19:31,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:19:31,438 INFO L470 AbstractCegarLoop]: Abstraction has 392 states and 515 transitions. [2021-12-22 00:19:31,438 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 5 states have internal predecessors, (38), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-22 00:19:31,438 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 515 transitions. [2021-12-22 00:19:31,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-12-22 00:19:31,439 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:19:31,439 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] [2021-12-22 00:19:31,439 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-22 00:19:31,439 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-22 00:19:31,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:19:31,439 INFO L85 PathProgramCache]: Analyzing trace with hash -13657420, now seen corresponding path program 1 times [2021-12-22 00:19:31,440 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 00:19:31,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193374266] [2021-12-22 00:19:31,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:19:31,440 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 00:19:31,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:19:31,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 00:19:31,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:19:31,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 00:19:31,499 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 00:19:31,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193374266] [2021-12-22 00:19:31,499 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193374266] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 00:19:31,500 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 00:19:31,500 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-22 00:19:31,500 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687110560] [2021-12-22 00:19:31,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 00:19:31,500 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 00:19:31,500 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 00:19:31,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 00:19:31,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-22 00:19:31,501 INFO L87 Difference]: Start difference. First operand 392 states and 515 transitions. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-22 00:19:31,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:19:31,697 INFO L93 Difference]: Finished difference Result 404 states and 528 transitions. [2021-12-22 00:19:31,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-22 00:19:31,698 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 43 [2021-12-22 00:19:31,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:19:31,699 INFO L225 Difference]: With dead ends: 404 [2021-12-22 00:19:31,699 INFO L226 Difference]: Without dead ends: 404 [2021-12-22 00:19:31,699 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-12-22 00:19:31,699 INFO L933 BasicCegarLoop]: 280 mSDtfsCounter, 315 mSDsluCounter, 619 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 317 SdHoareTripleChecker+Valid, 899 SdHoareTripleChecker+Invalid, 299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 00:19:31,700 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [317 Valid, 899 Invalid, 299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 265 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 00:19:31,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2021-12-22 00:19:31,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 392. [2021-12-22 00:19:31,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 345 states have (on average 1.289855072463768) internal successors, (445), 351 states have internal predecessors, (445), 32 states have call successors, (32), 14 states have call predecessors, (32), 14 states have return successors, (37), 27 states have call predecessors, (37), 26 states have call successors, (37) [2021-12-22 00:19:31,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 514 transitions. [2021-12-22 00:19:31,705 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 514 transitions. Word has length 43 [2021-12-22 00:19:31,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:19:31,705 INFO L470 AbstractCegarLoop]: Abstraction has 392 states and 514 transitions. [2021-12-22 00:19:31,705 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-22 00:19:31,705 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 514 transitions. [2021-12-22 00:19:31,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-12-22 00:19:31,705 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:19:31,705 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] [2021-12-22 00:19:31,705 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-22 00:19:31,706 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-22 00:19:31,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:19:31,706 INFO L85 PathProgramCache]: Analyzing trace with hash -1480101209, now seen corresponding path program 1 times [2021-12-22 00:19:31,706 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 00:19:31,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574185402] [2021-12-22 00:19:31,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:19:31,707 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 00:19:31,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:19:31,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-22 00:19:31,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:19:31,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 00:19:31,757 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 00:19:31,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574185402] [2021-12-22 00:19:31,757 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574185402] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 00:19:31,757 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 00:19:31,757 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-22 00:19:31,757 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328715966] [2021-12-22 00:19:31,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 00:19:31,758 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 00:19:31,758 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 00:19:31,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 00:19:31,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-22 00:19:31,758 INFO L87 Difference]: Start difference. First operand 392 states and 514 transitions. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-22 00:19:31,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:19:31,952 INFO L93 Difference]: Finished difference Result 411 states and 538 transitions. [2021-12-22 00:19:31,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-22 00:19:31,952 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 42 [2021-12-22 00:19:31,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:19:31,954 INFO L225 Difference]: With dead ends: 411 [2021-12-22 00:19:31,954 INFO L226 Difference]: Without dead ends: 411 [2021-12-22 00:19:31,954 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-12-22 00:19:31,954 INFO L933 BasicCegarLoop]: 273 mSDtfsCounter, 334 mSDsluCounter, 637 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 339 SdHoareTripleChecker+Valid, 910 SdHoareTripleChecker+Invalid, 275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 00:19:31,954 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [339 Valid, 910 Invalid, 275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 219 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 00:19:31,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 411 states. [2021-12-22 00:19:31,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 411 to 384. [2021-12-22 00:19:31,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 338 states have (on average 1.2810650887573964) internal successors, (433), 344 states have internal predecessors, (433), 32 states have call successors, (32), 14 states have call predecessors, (32), 13 states have return successors, (36), 26 states have call predecessors, (36), 26 states have call successors, (36) [2021-12-22 00:19:31,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 501 transitions. [2021-12-22 00:19:31,960 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 501 transitions. Word has length 42 [2021-12-22 00:19:31,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:19:31,960 INFO L470 AbstractCegarLoop]: Abstraction has 384 states and 501 transitions. [2021-12-22 00:19:31,960 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-22 00:19:31,960 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 501 transitions. [2021-12-22 00:19:31,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-12-22 00:19:31,961 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:19:31,961 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] [2021-12-22 00:19:31,961 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-22 00:19:31,962 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-22 00:19:31,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:19:31,962 INFO L85 PathProgramCache]: Analyzing trace with hash -2093894745, now seen corresponding path program 1 times [2021-12-22 00:19:31,962 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 00:19:31,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215578409] [2021-12-22 00:19:31,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:19:31,962 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 00:19:31,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:19:31,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-22 00:19:31,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:19:31,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 00:19:31,990 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 00:19:31,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215578409] [2021-12-22 00:19:31,990 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215578409] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 00:19:31,990 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 00:19:31,990 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 00:19:31,990 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680596309] [2021-12-22 00:19:31,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 00:19:31,991 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 00:19:31,991 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 00:19:31,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 00:19:31,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-22 00:19:31,991 INFO L87 Difference]: Start difference. First operand 384 states and 501 transitions. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-22 00:19:32,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:19:32,088 INFO L93 Difference]: Finished difference Result 397 states and 512 transitions. [2021-12-22 00:19:32,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 00:19:32,088 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 42 [2021-12-22 00:19:32,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:19:32,089 INFO L225 Difference]: With dead ends: 397 [2021-12-22 00:19:32,090 INFO L226 Difference]: Without dead ends: 397 [2021-12-22 00:19:32,090 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-22 00:19:32,090 INFO L933 BasicCegarLoop]: 284 mSDtfsCounter, 80 mSDsluCounter, 403 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 687 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 00:19:32,090 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [81 Valid, 687 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 00:19:32,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397 states. [2021-12-22 00:19:32,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397 to 381. [2021-12-22 00:19:32,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 336 states have (on average 1.2738095238095237) internal successors, (428), 341 states have internal predecessors, (428), 31 states have call successors, (31), 14 states have call predecessors, (31), 13 states have return successors, (36), 26 states have call predecessors, (36), 26 states have call successors, (36) [2021-12-22 00:19:32,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 495 transitions. [2021-12-22 00:19:32,095 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 495 transitions. Word has length 42 [2021-12-22 00:19:32,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:19:32,096 INFO L470 AbstractCegarLoop]: Abstraction has 381 states and 495 transitions. [2021-12-22 00:19:32,096 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-22 00:19:32,096 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 495 transitions. [2021-12-22 00:19:32,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-12-22 00:19:32,097 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:19:32,097 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] [2021-12-22 00:19:32,097 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-22 00:19:32,097 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-22 00:19:32,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:19:32,097 INFO L85 PathProgramCache]: Analyzing trace with hash -34042315, now seen corresponding path program 1 times [2021-12-22 00:19:32,098 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 00:19:32,098 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638819066] [2021-12-22 00:19:32,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:19:32,098 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 00:19:32,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:19:32,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-22 00:19:32,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:19:32,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 00:19:32,144 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 00:19:32,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638819066] [2021-12-22 00:19:32,145 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638819066] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 00:19:32,145 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 00:19:32,145 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-22 00:19:32,145 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734615543] [2021-12-22 00:19:32,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 00:19:32,145 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-22 00:19:32,146 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 00:19:32,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-22 00:19:32,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-22 00:19:32,146 INFO L87 Difference]: Start difference. First operand 381 states and 495 transitions. Second operand has 8 states, 8 states have (on average 5.0) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-22 00:19:32,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:19:32,306 INFO L93 Difference]: Finished difference Result 423 states and 547 transitions. [2021-12-22 00:19:32,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-22 00:19:32,306 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 43 [2021-12-22 00:19:32,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:19:32,308 INFO L225 Difference]: With dead ends: 423 [2021-12-22 00:19:32,308 INFO L226 Difference]: Without dead ends: 422 [2021-12-22 00:19:32,308 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-12-22 00:19:32,308 INFO L933 BasicCegarLoop]: 277 mSDtfsCounter, 227 mSDsluCounter, 1296 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 253 SdHoareTripleChecker+Valid, 1573 SdHoareTripleChecker+Invalid, 278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 00:19:32,309 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [253 Valid, 1573 Invalid, 278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 00:19:32,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2021-12-22 00:19:32,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 396. [2021-12-22 00:19:32,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 396 states, 350 states have (on average 1.262857142857143) internal successors, (442), 355 states have internal predecessors, (442), 31 states have call successors, (31), 14 states have call predecessors, (31), 14 states have return successors, (42), 27 states have call predecessors, (42), 26 states have call successors, (42) [2021-12-22 00:19:32,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 515 transitions. [2021-12-22 00:19:32,315 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 515 transitions. Word has length 43 [2021-12-22 00:19:32,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:19:32,315 INFO L470 AbstractCegarLoop]: Abstraction has 396 states and 515 transitions. [2021-12-22 00:19:32,315 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-22 00:19:32,315 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 515 transitions. [2021-12-22 00:19:32,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-12-22 00:19:32,316 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:19:32,316 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] [2021-12-22 00:19:32,316 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-12-22 00:19:32,316 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-22 00:19:32,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:19:32,317 INFO L85 PathProgramCache]: Analyzing trace with hash -33765485, now seen corresponding path program 1 times [2021-12-22 00:19:32,317 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 00:19:32,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55051881] [2021-12-22 00:19:32,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:19:32,317 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 00:19:32,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:19:32,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-22 00:19:32,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:19:32,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 00:19:32,354 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 00:19:32,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55051881] [2021-12-22 00:19:32,355 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55051881] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 00:19:32,355 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 00:19:32,355 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-22 00:19:32,355 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331839745] [2021-12-22 00:19:32,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 00:19:32,355 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-22 00:19:32,355 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 00:19:32,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-22 00:19:32,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-22 00:19:32,356 INFO L87 Difference]: Start difference. First operand 396 states and 515 transitions. Second operand has 8 states, 8 states have (on average 5.0) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-22 00:19:32,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:19:32,520 INFO L93 Difference]: Finished difference Result 419 states and 540 transitions. [2021-12-22 00:19:32,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-22 00:19:32,522 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 43 [2021-12-22 00:19:32,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:19:32,523 INFO L225 Difference]: With dead ends: 419 [2021-12-22 00:19:32,524 INFO L226 Difference]: Without dead ends: 409 [2021-12-22 00:19:32,524 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-12-22 00:19:32,524 INFO L933 BasicCegarLoop]: 279 mSDtfsCounter, 49 mSDsluCounter, 1370 mSDsCounter, 0 mSdLazyCounter, 365 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 1649 SdHoareTripleChecker+Invalid, 390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 365 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 00:19:32,524 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [49 Valid, 1649 Invalid, 390 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 365 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 00:19:32,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2021-12-22 00:19:32,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 393. [2021-12-22 00:19:32,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 347 states have (on average 1.2651296829971181) internal successors, (439), 353 states have internal predecessors, (439), 31 states have call successors, (31), 14 states have call predecessors, (31), 14 states have return successors, (41), 26 states have call predecessors, (41), 26 states have call successors, (41) [2021-12-22 00:19:32,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 511 transitions. [2021-12-22 00:19:32,530 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 511 transitions. Word has length 43 [2021-12-22 00:19:32,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:19:32,531 INFO L470 AbstractCegarLoop]: Abstraction has 393 states and 511 transitions. [2021-12-22 00:19:32,531 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-22 00:19:32,531 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 511 transitions. [2021-12-22 00:19:32,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-12-22 00:19:32,531 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:19:32,532 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] [2021-12-22 00:19:32,532 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-12-22 00:19:32,532 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-22 00:19:32,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:19:32,532 INFO L85 PathProgramCache]: Analyzing trace with hash 1181888463, now seen corresponding path program 1 times [2021-12-22 00:19:32,532 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 00:19:32,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783413615] [2021-12-22 00:19:32,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:19:32,533 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 00:19:32,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:19:32,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-22 00:19:32,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:19:32,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 00:19:32,578 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 00:19:32,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783413615] [2021-12-22 00:19:32,578 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783413615] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 00:19:32,579 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 00:19:32,579 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-22 00:19:32,579 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245036713] [2021-12-22 00:19:32,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 00:19:32,579 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 00:19:32,579 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 00:19:32,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 00:19:32,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-22 00:19:32,580 INFO L87 Difference]: Start difference. First operand 393 states and 511 transitions. Second operand has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-22 00:19:32,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:19:32,756 INFO L93 Difference]: Finished difference Result 409 states and 526 transitions. [2021-12-22 00:19:32,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-22 00:19:32,757 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 44 [2021-12-22 00:19:32,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:19:32,758 INFO L225 Difference]: With dead ends: 409 [2021-12-22 00:19:32,758 INFO L226 Difference]: Without dead ends: 397 [2021-12-22 00:19:32,758 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-12-22 00:19:32,759 INFO L933 BasicCegarLoop]: 283 mSDtfsCounter, 384 mSDsluCounter, 554 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 391 SdHoareTripleChecker+Valid, 837 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 00:19:32,759 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [391 Valid, 837 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 00:19:32,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397 states. [2021-12-22 00:19:32,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397 to 377. [2021-12-22 00:19:32,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 333 states have (on average 1.2702702702702702) internal successors, (423), 338 states have internal predecessors, (423), 30 states have call successors, (30), 14 states have call predecessors, (30), 13 states have return successors, (35), 25 states have call predecessors, (35), 25 states have call successors, (35) [2021-12-22 00:19:32,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 488 transitions. [2021-12-22 00:19:32,764 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 488 transitions. Word has length 44 [2021-12-22 00:19:32,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:19:32,764 INFO L470 AbstractCegarLoop]: Abstraction has 377 states and 488 transitions. [2021-12-22 00:19:32,764 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-22 00:19:32,765 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 488 transitions. [2021-12-22 00:19:32,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-12-22 00:19:32,765 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:19:32,765 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] [2021-12-22 00:19:32,765 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-12-22 00:19:32,766 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-22 00:19:32,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:19:32,766 INFO L85 PathProgramCache]: Analyzing trace with hash 1424622961, now seen corresponding path program 1 times [2021-12-22 00:19:32,766 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 00:19:32,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221189960] [2021-12-22 00:19:32,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:19:32,767 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 00:19:32,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:19:32,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 00:19:32,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:19:32,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 00:19:32,799 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 00:19:32,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221189960] [2021-12-22 00:19:32,799 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221189960] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 00:19:32,800 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 00:19:32,800 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 00:19:32,800 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028225338] [2021-12-22 00:19:32,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 00:19:32,800 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 00:19:32,800 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 00:19:32,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 00:19:32,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-22 00:19:32,801 INFO L87 Difference]: Start difference. First operand 377 states and 488 transitions. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-22 00:19:32,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:19:32,896 INFO L93 Difference]: Finished difference Result 468 states and 599 transitions. [2021-12-22 00:19:32,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 00:19:32,897 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 46 [2021-12-22 00:19:32,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:19:32,898 INFO L225 Difference]: With dead ends: 468 [2021-12-22 00:19:32,898 INFO L226 Difference]: Without dead ends: 468 [2021-12-22 00:19:32,898 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-22 00:19:32,899 INFO L933 BasicCegarLoop]: 319 mSDtfsCounter, 160 mSDsluCounter, 428 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 747 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 00:19:32,899 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [161 Valid, 747 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 00:19:32,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 468 states. [2021-12-22 00:19:32,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 468 to 430. [2021-12-22 00:19:32,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 430 states, 381 states have (on average 1.2703412073490814) internal successors, (484), 385 states have internal predecessors, (484), 32 states have call successors, (32), 16 states have call predecessors, (32), 16 states have return successors, (41), 29 states have call predecessors, (41), 28 states have call successors, (41) [2021-12-22 00:19:32,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 557 transitions. [2021-12-22 00:19:32,905 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 557 transitions. Word has length 46 [2021-12-22 00:19:32,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:19:32,905 INFO L470 AbstractCegarLoop]: Abstraction has 430 states and 557 transitions. [2021-12-22 00:19:32,905 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-22 00:19:32,905 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 557 transitions. [2021-12-22 00:19:32,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-12-22 00:19:32,906 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:19:32,906 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, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 00:19:32,906 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-12-22 00:19:32,906 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-22 00:19:32,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:19:32,907 INFO L85 PathProgramCache]: Analyzing trace with hash -1973534822, now seen corresponding path program 1 times [2021-12-22 00:19:32,907 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 00:19:32,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754285] [2021-12-22 00:19:32,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:19:32,907 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 00:19:32,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:19:32,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-22 00:19:32,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:19:32,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 00:19:32,973 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 00:19:32,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754285] [2021-12-22 00:19:32,973 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754285] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 00:19:32,973 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 00:19:32,973 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 00:19:32,973 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162354748] [2021-12-22 00:19:32,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 00:19:32,974 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 00:19:32,974 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 00:19:32,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 00:19:32,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 00:19:32,974 INFO L87 Difference]: Start difference. First operand 430 states and 557 transitions. Second operand has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 5 states have internal predecessors, (44), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-22 00:19:33,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:19:33,092 INFO L93 Difference]: Finished difference Result 471 states and 604 transitions. [2021-12-22 00:19:33,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-22 00:19:33,093 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 5 states have internal predecessors, (44), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 48 [2021-12-22 00:19:33,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:19:33,094 INFO L225 Difference]: With dead ends: 471 [2021-12-22 00:19:33,094 INFO L226 Difference]: Without dead ends: 471 [2021-12-22 00:19:33,095 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-12-22 00:19:33,095 INFO L933 BasicCegarLoop]: 306 mSDtfsCounter, 52 mSDsluCounter, 1339 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 1645 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 00:19:33,095 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [54 Valid, 1645 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 00:19:33,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states. [2021-12-22 00:19:33,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 430. [2021-12-22 00:19:33,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 430 states, 381 states have (on average 1.2650918635170603) internal successors, (482), 385 states have internal predecessors, (482), 32 states have call successors, (32), 16 states have call predecessors, (32), 16 states have return successors, (41), 29 states have call predecessors, (41), 28 states have call successors, (41) [2021-12-22 00:19:33,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 555 transitions. [2021-12-22 00:19:33,101 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 555 transitions. Word has length 48 [2021-12-22 00:19:33,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:19:33,101 INFO L470 AbstractCegarLoop]: Abstraction has 430 states and 555 transitions. [2021-12-22 00:19:33,101 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 5 states have internal predecessors, (44), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-22 00:19:33,102 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 555 transitions. [2021-12-22 00:19:33,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-12-22 00:19:33,102 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:19:33,102 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] [2021-12-22 00:19:33,102 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-12-22 00:19:33,103 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-22 00:19:33,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:19:33,103 INFO L85 PathProgramCache]: Analyzing trace with hash 1518352747, now seen corresponding path program 1 times [2021-12-22 00:19:33,103 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 00:19:33,103 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282520567] [2021-12-22 00:19:33,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:19:33,104 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 00:19:33,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:19:33,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-22 00:19:33,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:19:33,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 00:19:33,147 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 00:19:33,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282520567] [2021-12-22 00:19:33,147 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282520567] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 00:19:33,147 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 00:19:33,147 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-22 00:19:33,147 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45543548] [2021-12-22 00:19:33,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 00:19:33,148 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-22 00:19:33,148 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 00:19:33,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-22 00:19:33,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-22 00:19:33,149 INFO L87 Difference]: Start difference. First operand 430 states and 555 transitions. Second operand has 9 states, 9 states have (on average 5.0) internal successors, (45), 7 states have internal predecessors, (45), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-22 00:19:33,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:19:33,323 INFO L93 Difference]: Finished difference Result 454 states and 581 transitions. [2021-12-22 00:19:33,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-22 00:19:33,324 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.0) internal successors, (45), 7 states have internal predecessors, (45), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 48 [2021-12-22 00:19:33,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:19:33,325 INFO L225 Difference]: With dead ends: 454 [2021-12-22 00:19:33,325 INFO L226 Difference]: Without dead ends: 438 [2021-12-22 00:19:33,326 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-12-22 00:19:33,326 INFO L933 BasicCegarLoop]: 272 mSDtfsCounter, 53 mSDsluCounter, 1572 mSDsCounter, 0 mSdLazyCounter, 398 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 1844 SdHoareTripleChecker+Invalid, 420 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 398 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 00:19:33,326 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [53 Valid, 1844 Invalid, 420 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 398 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 00:19:33,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438 states. [2021-12-22 00:19:33,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438 to 426. [2021-12-22 00:19:33,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 426 states, 378 states have (on average 1.2645502645502646) internal successors, (478), 382 states have internal predecessors, (478), 31 states have call successors, (31), 16 states have call predecessors, (31), 16 states have return successors, (40), 28 states have call predecessors, (40), 27 states have call successors, (40) [2021-12-22 00:19:33,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 549 transitions. [2021-12-22 00:19:33,332 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 549 transitions. Word has length 48 [2021-12-22 00:19:33,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:19:33,332 INFO L470 AbstractCegarLoop]: Abstraction has 426 states and 549 transitions. [2021-12-22 00:19:33,332 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.0) internal successors, (45), 7 states have internal predecessors, (45), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-22 00:19:33,332 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 549 transitions. [2021-12-22 00:19:33,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-12-22 00:19:33,333 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:19:33,333 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] [2021-12-22 00:19:33,333 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-12-22 00:19:33,333 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-22 00:19:33,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:19:33,334 INFO L85 PathProgramCache]: Analyzing trace with hash 882823039, now seen corresponding path program 1 times [2021-12-22 00:19:33,334 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 00:19:33,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808408194] [2021-12-22 00:19:33,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:19:33,334 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 00:19:33,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:19:33,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-22 00:19:33,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:19:33,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 00:19:33,378 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 00:19:33,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808408194] [2021-12-22 00:19:33,379 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808408194] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 00:19:33,379 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 00:19:33,379 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-22 00:19:33,379 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645150175] [2021-12-22 00:19:33,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 00:19:33,379 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-22 00:19:33,379 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 00:19:33,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-22 00:19:33,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-22 00:19:33,380 INFO L87 Difference]: Start difference. First operand 426 states and 549 transitions. Second operand has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 7 states have internal predecessors, (46), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-22 00:19:33,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:19:33,553 INFO L93 Difference]: Finished difference Result 450 states and 575 transitions. [2021-12-22 00:19:33,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-22 00:19:33,554 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 7 states have internal predecessors, (46), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 49 [2021-12-22 00:19:33,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:19:33,555 INFO L225 Difference]: With dead ends: 450 [2021-12-22 00:19:33,555 INFO L226 Difference]: Without dead ends: 433 [2021-12-22 00:19:33,555 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-12-22 00:19:33,556 INFO L933 BasicCegarLoop]: 266 mSDtfsCounter, 53 mSDsluCounter, 1540 mSDsCounter, 0 mSdLazyCounter, 389 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 1806 SdHoareTripleChecker+Invalid, 410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 00:19:33,556 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [53 Valid, 1806 Invalid, 410 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 389 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 00:19:33,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2021-12-22 00:19:33,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 421. [2021-12-22 00:19:33,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 421 states, 374 states have (on average 1.2647058823529411) internal successors, (473), 378 states have internal predecessors, (473), 30 states have call successors, (30), 16 states have call predecessors, (30), 16 states have return successors, (39), 27 states have call predecessors, (39), 26 states have call successors, (39) [2021-12-22 00:19:33,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 542 transitions. [2021-12-22 00:19:33,561 INFO L78 Accepts]: Start accepts. Automaton has 421 states and 542 transitions. Word has length 49 [2021-12-22 00:19:33,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:19:33,561 INFO L470 AbstractCegarLoop]: Abstraction has 421 states and 542 transitions. [2021-12-22 00:19:33,561 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 7 states have internal predecessors, (46), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-22 00:19:33,562 INFO L276 IsEmpty]: Start isEmpty. Operand 421 states and 542 transitions. [2021-12-22 00:19:33,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-12-22 00:19:33,562 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:19:33,562 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] [2021-12-22 00:19:33,563 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-12-22 00:19:33,563 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-22 00:19:33,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:19:33,563 INFO L85 PathProgramCache]: Analyzing trace with hash 163830842, now seen corresponding path program 1 times [2021-12-22 00:19:33,563 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 00:19:33,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881389210] [2021-12-22 00:19:33,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:19:33,564 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 00:19:33,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:19:33,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-22 00:19:33,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:19:33,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 00:19:33,611 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 00:19:33,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881389210] [2021-12-22 00:19:33,612 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881389210] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 00:19:33,612 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 00:19:33,612 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-22 00:19:33,612 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062576474] [2021-12-22 00:19:33,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 00:19:33,612 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-22 00:19:33,613 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 00:19:33,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-22 00:19:33,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-22 00:19:33,613 INFO L87 Difference]: Start difference. First operand 421 states and 542 transitions. Second operand has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 7 states have internal predecessors, (46), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-22 00:19:33,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:19:33,888 INFO L93 Difference]: Finished difference Result 445 states and 568 transitions. [2021-12-22 00:19:33,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-22 00:19:33,899 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 7 states have internal predecessors, (46), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 49 [2021-12-22 00:19:33,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:19:33,901 INFO L225 Difference]: With dead ends: 445 [2021-12-22 00:19:33,901 INFO L226 Difference]: Without dead ends: 429 [2021-12-22 00:19:33,901 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-12-22 00:19:33,901 INFO L933 BasicCegarLoop]: 259 mSDtfsCounter, 53 mSDsluCounter, 1501 mSDsCounter, 0 mSdLazyCounter, 380 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 1760 SdHoareTripleChecker+Invalid, 400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-22 00:19:33,902 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [53 Valid, 1760 Invalid, 400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 380 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-22 00:19:33,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2021-12-22 00:19:33,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 417. [2021-12-22 00:19:33,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 417 states, 371 states have (on average 1.2641509433962264) internal successors, (469), 375 states have internal predecessors, (469), 29 states have call successors, (29), 16 states have call predecessors, (29), 16 states have return successors, (38), 26 states have call predecessors, (38), 25 states have call successors, (38) [2021-12-22 00:19:33,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 536 transitions. [2021-12-22 00:19:33,908 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 536 transitions. Word has length 49 [2021-12-22 00:19:33,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:19:33,908 INFO L470 AbstractCegarLoop]: Abstraction has 417 states and 536 transitions. [2021-12-22 00:19:33,908 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 7 states have internal predecessors, (46), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-22 00:19:33,909 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 536 transitions. [2021-12-22 00:19:33,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-12-22 00:19:33,909 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:19:33,910 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] [2021-12-22 00:19:33,910 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-12-22 00:19:33,910 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-22 00:19:33,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:19:33,910 INFO L85 PathProgramCache]: Analyzing trace with hash -48892372, now seen corresponding path program 1 times [2021-12-22 00:19:33,910 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 00:19:33,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603850538] [2021-12-22 00:19:33,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:19:33,911 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 00:19:33,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:19:33,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 00:19:33,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:19:34,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 00:19:34,020 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 00:19:34,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603850538] [2021-12-22 00:19:34,021 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603850538] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 00:19:34,021 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 00:19:34,021 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 00:19:34,021 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033782784] [2021-12-22 00:19:34,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 00:19:34,022 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 00:19:34,022 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 00:19:34,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 00:19:34,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 00:19:34,022 INFO L87 Difference]: Start difference. First operand 417 states and 536 transitions. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-22 00:19:34,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:19:34,148 INFO L93 Difference]: Finished difference Result 561 states and 736 transitions. [2021-12-22 00:19:34,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-22 00:19:34,148 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 51 [2021-12-22 00:19:34,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:19:34,150 INFO L225 Difference]: With dead ends: 561 [2021-12-22 00:19:34,150 INFO L226 Difference]: Without dead ends: 561 [2021-12-22 00:19:34,150 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-12-22 00:19:34,151 INFO L933 BasicCegarLoop]: 348 mSDtfsCounter, 104 mSDsluCounter, 1485 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 1833 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 00:19:34,151 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [109 Valid, 1833 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 00:19:34,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 561 states. [2021-12-22 00:19:34,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 561 to 417. [2021-12-22 00:19:34,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 417 states, 371 states have (on average 1.261455525606469) internal successors, (468), 375 states have internal predecessors, (468), 29 states have call successors, (29), 16 states have call predecessors, (29), 16 states have return successors, (38), 26 states have call predecessors, (38), 25 states have call successors, (38) [2021-12-22 00:19:34,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 535 transitions. [2021-12-22 00:19:34,157 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 535 transitions. Word has length 51 [2021-12-22 00:19:34,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:19:34,157 INFO L470 AbstractCegarLoop]: Abstraction has 417 states and 535 transitions. [2021-12-22 00:19:34,157 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-22 00:19:34,157 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 535 transitions. [2021-12-22 00:19:34,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-12-22 00:19:34,158 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:19:34,158 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] [2021-12-22 00:19:34,158 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-12-22 00:19:34,158 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-22 00:19:34,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:19:34,159 INFO L85 PathProgramCache]: Analyzing trace with hash -1190154103, now seen corresponding path program 1 times [2021-12-22 00:19:34,159 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 00:19:34,159 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889386654] [2021-12-22 00:19:34,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:19:34,159 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 00:19:34,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:19:34,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-22 00:19:34,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:19:34,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 00:19:34,208 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 00:19:34,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889386654] [2021-12-22 00:19:34,209 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889386654] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 00:19:34,209 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 00:19:34,209 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-22 00:19:34,209 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747210926] [2021-12-22 00:19:34,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 00:19:34,209 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-22 00:19:34,209 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 00:19:34,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-22 00:19:34,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-22 00:19:34,210 INFO L87 Difference]: Start difference. First operand 417 states and 535 transitions. Second operand has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 7 states have internal predecessors, (50), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-22 00:19:34,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:19:34,379 INFO L93 Difference]: Finished difference Result 441 states and 561 transitions. [2021-12-22 00:19:34,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-22 00:19:34,380 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 7 states have internal predecessors, (50), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 53 [2021-12-22 00:19:34,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:19:34,381 INFO L225 Difference]: With dead ends: 441 [2021-12-22 00:19:34,381 INFO L226 Difference]: Without dead ends: 407 [2021-12-22 00:19:34,382 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-12-22 00:19:34,382 INFO L933 BasicCegarLoop]: 261 mSDtfsCounter, 61 mSDsluCounter, 1503 mSDsCounter, 0 mSdLazyCounter, 380 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 1764 SdHoareTripleChecker+Invalid, 399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 00:19:34,382 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [62 Valid, 1764 Invalid, 399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 380 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 00:19:34,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2021-12-22 00:19:34,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 395. [2021-12-22 00:19:34,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395 states, 352 states have (on average 1.2613636363636365) internal successors, (444), 356 states have internal predecessors, (444), 27 states have call successors, (27), 15 states have call predecessors, (27), 15 states have return successors, (36), 24 states have call predecessors, (36), 23 states have call successors, (36) [2021-12-22 00:19:34,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 507 transitions. [2021-12-22 00:19:34,388 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 507 transitions. Word has length 53 [2021-12-22 00:19:34,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:19:34,388 INFO L470 AbstractCegarLoop]: Abstraction has 395 states and 507 transitions. [2021-12-22 00:19:34,388 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 7 states have internal predecessors, (50), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-22 00:19:34,388 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 507 transitions. [2021-12-22 00:19:34,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-12-22 00:19:34,389 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:19:34,389 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] [2021-12-22 00:19:34,389 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-12-22 00:19:34,390 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-22 00:19:34,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:19:34,390 INFO L85 PathProgramCache]: Analyzing trace with hash -1140585270, now seen corresponding path program 1 times [2021-12-22 00:19:34,390 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 00:19:34,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629062680] [2021-12-22 00:19:34,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:19:34,390 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 00:19:34,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:19:34,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-22 00:19:34,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:19:34,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-22 00:19:34,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:19:34,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 00:19:34,435 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 00:19:34,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629062680] [2021-12-22 00:19:34,435 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629062680] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 00:19:34,435 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 00:19:34,435 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 00:19:34,435 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207959810] [2021-12-22 00:19:34,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 00:19:34,436 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 00:19:34,436 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 00:19:34,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 00:19:34,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-22 00:19:34,436 INFO L87 Difference]: Start difference. First operand 395 states and 507 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 5 states have internal predecessors, (53), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-22 00:19:34,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:19:34,585 INFO L93 Difference]: Finished difference Result 382 states and 481 transitions. [2021-12-22 00:19:34,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-22 00:19:34,586 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 5 states have internal predecessors, (53), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 59 [2021-12-22 00:19:34,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:19:34,587 INFO L225 Difference]: With dead ends: 382 [2021-12-22 00:19:34,587 INFO L226 Difference]: Without dead ends: 382 [2021-12-22 00:19:34,587 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-12-22 00:19:34,588 INFO L933 BasicCegarLoop]: 310 mSDtfsCounter, 132 mSDsluCounter, 860 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 1170 SdHoareTripleChecker+Invalid, 280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 00:19:34,588 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [133 Valid, 1170 Invalid, 280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 249 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 00:19:34,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2021-12-22 00:19:34,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 362. [2021-12-22 00:19:34,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 362 states, 324 states have (on average 1.2623456790123457) internal successors, (409), 327 states have internal predecessors, (409), 24 states have call successors, (24), 14 states have call predecessors, (24), 13 states have return successors, (24), 21 states have call predecessors, (24), 21 states have call successors, (24) [2021-12-22 00:19:34,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 457 transitions. [2021-12-22 00:19:34,593 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 457 transitions. Word has length 59 [2021-12-22 00:19:34,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:19:34,593 INFO L470 AbstractCegarLoop]: Abstraction has 362 states and 457 transitions. [2021-12-22 00:19:34,593 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 5 states have internal predecessors, (53), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-22 00:19:34,594 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 457 transitions. [2021-12-22 00:19:34,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-12-22 00:19:34,594 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:19:34,594 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] [2021-12-22 00:19:34,594 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-12-22 00:19:34,595 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-22 00:19:34,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:19:34,595 INFO L85 PathProgramCache]: Analyzing trace with hash 731705651, now seen corresponding path program 1 times [2021-12-22 00:19:34,595 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 00:19:34,595 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026022021] [2021-12-22 00:19:34,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:19:34,596 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 00:19:34,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:19:34,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-22 00:19:34,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:19:34,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-22 00:19:34,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:19:34,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 00:19:34,649 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 00:19:34,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026022021] [2021-12-22 00:19:34,649 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026022021] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 00:19:34,649 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 00:19:34,649 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-22 00:19:34,649 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299755982] [2021-12-22 00:19:34,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 00:19:34,650 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-22 00:19:34,650 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 00:19:34,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-22 00:19:34,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-12-22 00:19:34,650 INFO L87 Difference]: Start difference. First operand 362 states and 457 transitions. Second operand has 9 states, 9 states have (on average 6.222222222222222) internal successors, (56), 7 states have internal predecessors, (56), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-22 00:19:35,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:19:35,058 INFO L93 Difference]: Finished difference Result 487 states and 595 transitions. [2021-12-22 00:19:35,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-22 00:19:35,058 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.222222222222222) internal successors, (56), 7 states have internal predecessors, (56), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 61 [2021-12-22 00:19:35,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:19:35,060 INFO L225 Difference]: With dead ends: 487 [2021-12-22 00:19:35,060 INFO L226 Difference]: Without dead ends: 487 [2021-12-22 00:19:35,061 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=198, Unknown=0, NotChecked=0, Total=272 [2021-12-22 00:19:35,061 INFO L933 BasicCegarLoop]: 291 mSDtfsCounter, 355 mSDsluCounter, 1094 mSDsCounter, 0 mSdLazyCounter, 432 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 361 SdHoareTripleChecker+Valid, 1385 SdHoareTripleChecker+Invalid, 484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-22 00:19:35,061 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [361 Valid, 1385 Invalid, 484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 432 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-22 00:19:35,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 487 states. [2021-12-22 00:19:35,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 487 to 456. [2021-12-22 00:19:35,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 456 states, 408 states have (on average 1.2475490196078431) internal successors, (509), 413 states have internal predecessors, (509), 26 states have call successors, (26), 20 states have call predecessors, (26), 21 states have return successors, (27), 23 states have call predecessors, (27), 23 states have call successors, (27) [2021-12-22 00:19:35,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 456 states to 456 states and 562 transitions. [2021-12-22 00:19:35,084 INFO L78 Accepts]: Start accepts. Automaton has 456 states and 562 transitions. Word has length 61 [2021-12-22 00:19:35,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:19:35,085 INFO L470 AbstractCegarLoop]: Abstraction has 456 states and 562 transitions. [2021-12-22 00:19:35,085 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.222222222222222) internal successors, (56), 7 states have internal predecessors, (56), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-22 00:19:35,085 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states and 562 transitions. [2021-12-22 00:19:35,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-12-22 00:19:35,086 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:19:35,086 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] [2021-12-22 00:19:35,086 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-12-22 00:19:35,086 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-22 00:19:35,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:19:35,087 INFO L85 PathProgramCache]: Analyzing trace with hash 1386771644, now seen corresponding path program 1 times [2021-12-22 00:19:35,087 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 00:19:35,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833876287] [2021-12-22 00:19:35,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:19:35,087 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 00:19:35,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:19:35,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-22 00:19:35,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:19:35,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-22 00:19:35,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:19:35,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 00:19:35,207 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 00:19:35,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833876287] [2021-12-22 00:19:35,207 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833876287] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 00:19:35,207 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 00:19:35,207 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-22 00:19:35,207 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132562412] [2021-12-22 00:19:35,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 00:19:35,208 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-22 00:19:35,208 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 00:19:35,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-22 00:19:35,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-22 00:19:35,208 INFO L87 Difference]: Start difference. First operand 456 states and 562 transitions. Second operand has 10 states, 10 states have (on average 5.7) internal successors, (57), 7 states have internal predecessors, (57), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-22 00:19:35,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:19:35,511 INFO L93 Difference]: Finished difference Result 455 states and 560 transitions. [2021-12-22 00:19:35,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-22 00:19:35,511 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.7) internal successors, (57), 7 states have internal predecessors, (57), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 62 [2021-12-22 00:19:35,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:19:35,512 INFO L225 Difference]: With dead ends: 455 [2021-12-22 00:19:35,512 INFO L226 Difference]: Without dead ends: 343 [2021-12-22 00:19:35,513 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2021-12-22 00:19:35,513 INFO L933 BasicCegarLoop]: 225 mSDtfsCounter, 97 mSDsluCounter, 1381 mSDsCounter, 0 mSdLazyCounter, 465 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 1606 SdHoareTripleChecker+Invalid, 492 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 465 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-22 00:19:35,513 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [97 Valid, 1606 Invalid, 492 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 465 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-22 00:19:35,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2021-12-22 00:19:35,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 343. [2021-12-22 00:19:35,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343 states, 304 states have (on average 1.2532894736842106) internal successors, (381), 308 states have internal predecessors, (381), 21 states have call successors, (21), 16 states have call predecessors, (21), 17 states have return successors, (23), 19 states have call predecessors, (23), 19 states have call successors, (23) [2021-12-22 00:19:35,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 425 transitions. [2021-12-22 00:19:35,533 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 425 transitions. Word has length 62 [2021-12-22 00:19:35,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:19:35,533 INFO L470 AbstractCegarLoop]: Abstraction has 343 states and 425 transitions. [2021-12-22 00:19:35,533 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.7) internal successors, (57), 7 states have internal predecessors, (57), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-22 00:19:35,533 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 425 transitions. [2021-12-22 00:19:35,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-12-22 00:19:35,534 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:19:35,534 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] [2021-12-22 00:19:35,534 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-12-22 00:19:35,534 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-22 00:19:35,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:19:35,534 INFO L85 PathProgramCache]: Analyzing trace with hash -643436666, now seen corresponding path program 1 times [2021-12-22 00:19:35,535 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 00:19:35,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50265559] [2021-12-22 00:19:35,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:19:35,535 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 00:19:35,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:19:35,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-22 00:19:35,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:19:35,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-22 00:19:35,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:19:35,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 00:19:35,636 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 00:19:35,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50265559] [2021-12-22 00:19:35,636 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50265559] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 00:19:35,636 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 00:19:35,636 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-22 00:19:35,636 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281309541] [2021-12-22 00:19:35,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 00:19:35,637 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-22 00:19:35,637 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 00:19:35,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-22 00:19:35,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-12-22 00:19:35,638 INFO L87 Difference]: Start difference. First operand 343 states and 425 transitions. Second operand has 10 states, 10 states have (on average 5.8) internal successors, (58), 7 states have internal predecessors, (58), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-22 00:19:35,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:19:35,872 INFO L93 Difference]: Finished difference Result 375 states and 461 transitions. [2021-12-22 00:19:35,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-22 00:19:35,873 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.8) internal successors, (58), 7 states have internal predecessors, (58), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 63 [2021-12-22 00:19:35,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:19:35,874 INFO L225 Difference]: With dead ends: 375 [2021-12-22 00:19:35,874 INFO L226 Difference]: Without dead ends: 359 [2021-12-22 00:19:35,874 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2021-12-22 00:19:35,874 INFO L933 BasicCegarLoop]: 176 mSDtfsCounter, 246 mSDsluCounter, 844 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 1020 SdHoareTripleChecker+Invalid, 306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-22 00:19:35,875 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [248 Valid, 1020 Invalid, 306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-22 00:19:35,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2021-12-22 00:19:35,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 351. [2021-12-22 00:19:35,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 351 states, 311 states have (on average 1.247588424437299) internal successors, (388), 315 states have internal predecessors, (388), 21 states have call successors, (21), 16 states have call predecessors, (21), 18 states have return successors, (25), 20 states have call predecessors, (25), 19 states have call successors, (25) [2021-12-22 00:19:35,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 434 transitions. [2021-12-22 00:19:35,879 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 434 transitions. Word has length 63 [2021-12-22 00:19:35,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:19:35,880 INFO L470 AbstractCegarLoop]: Abstraction has 351 states and 434 transitions. [2021-12-22 00:19:35,880 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.8) internal successors, (58), 7 states have internal predecessors, (58), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-22 00:19:35,880 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 434 transitions. [2021-12-22 00:19:35,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-12-22 00:19:35,881 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:19:35,881 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] [2021-12-22 00:19:35,881 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-12-22 00:19:35,881 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-22 00:19:35,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:19:35,882 INFO L85 PathProgramCache]: Analyzing trace with hash -164766848, now seen corresponding path program 1 times [2021-12-22 00:19:35,882 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 00:19:35,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201317081] [2021-12-22 00:19:35,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:19:35,882 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 00:19:35,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:19:35,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-22 00:19:35,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:19:35,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-22 00:19:35,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:19:35,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 00:19:35,991 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 00:19:35,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201317081] [2021-12-22 00:19:35,991 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201317081] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 00:19:35,991 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 00:19:35,991 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-22 00:19:35,992 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78668285] [2021-12-22 00:19:35,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 00:19:35,992 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-22 00:19:35,992 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 00:19:35,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-22 00:19:35,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-12-22 00:19:35,993 INFO L87 Difference]: Start difference. First operand 351 states and 434 transitions. Second operand has 10 states, 10 states have (on average 5.9) internal successors, (59), 7 states have internal predecessors, (59), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-22 00:19:36,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:19:36,165 INFO L93 Difference]: Finished difference Result 375 states and 460 transitions. [2021-12-22 00:19:36,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-22 00:19:36,165 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.9) internal successors, (59), 7 states have internal predecessors, (59), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 64 [2021-12-22 00:19:36,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:19:36,166 INFO L225 Difference]: With dead ends: 375 [2021-12-22 00:19:36,167 INFO L226 Difference]: Without dead ends: 359 [2021-12-22 00:19:36,167 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2021-12-22 00:19:36,167 INFO L933 BasicCegarLoop]: 189 mSDtfsCounter, 71 mSDsluCounter, 1108 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 1297 SdHoareTripleChecker+Invalid, 273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 00:19:36,167 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 1297 Invalid, 273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 251 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 00:19:36,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2021-12-22 00:19:36,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 343. [2021-12-22 00:19:36,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343 states, 304 states have (on average 1.25) internal successors, (380), 308 states have internal predecessors, (380), 21 states have call successors, (21), 16 states have call predecessors, (21), 17 states have return successors, (23), 19 states have call predecessors, (23), 19 states have call successors, (23) [2021-12-22 00:19:36,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 424 transitions. [2021-12-22 00:19:36,172 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 424 transitions. Word has length 64 [2021-12-22 00:19:36,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:19:36,172 INFO L470 AbstractCegarLoop]: Abstraction has 343 states and 424 transitions. [2021-12-22 00:19:36,172 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.9) internal successors, (59), 7 states have internal predecessors, (59), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-22 00:19:36,173 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 424 transitions. [2021-12-22 00:19:36,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-12-22 00:19:36,173 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:19:36,173 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] [2021-12-22 00:19:36,173 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-12-22 00:19:36,174 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-22 00:19:36,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:19:36,174 INFO L85 PathProgramCache]: Analyzing trace with hash 955115294, now seen corresponding path program 1 times [2021-12-22 00:19:36,174 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 00:19:36,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54803850] [2021-12-22 00:19:36,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:19:36,174 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 00:19:36,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:19:36,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 00:19:36,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:19:36,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-22 00:19:36,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:19:36,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 00:19:36,236 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 00:19:36,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54803850] [2021-12-22 00:19:36,237 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54803850] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 00:19:36,237 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 00:19:36,237 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-22 00:19:36,237 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2237156] [2021-12-22 00:19:36,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 00:19:36,237 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-22 00:19:36,237 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 00:19:36,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-22 00:19:36,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-12-22 00:19:36,238 INFO L87 Difference]: Start difference. First operand 343 states and 424 transitions. Second operand has 9 states, 9 states have (on average 7.0) internal successors, (63), 7 states have internal predecessors, (63), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-22 00:19:36,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:19:36,411 INFO L93 Difference]: Finished difference Result 395 states and 488 transitions. [2021-12-22 00:19:36,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-22 00:19:36,412 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.0) internal successors, (63), 7 states have internal predecessors, (63), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 68 [2021-12-22 00:19:36,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:19:36,413 INFO L225 Difference]: With dead ends: 395 [2021-12-22 00:19:36,413 INFO L226 Difference]: Without dead ends: 370 [2021-12-22 00:19:36,413 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2021-12-22 00:19:36,414 INFO L933 BasicCegarLoop]: 170 mSDtfsCounter, 85 mSDsluCounter, 988 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 1158 SdHoareTripleChecker+Invalid, 261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 00:19:36,414 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [85 Valid, 1158 Invalid, 261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 00:19:36,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2021-12-22 00:19:36,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 354. [2021-12-22 00:19:36,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 354 states, 314 states have (on average 1.2261146496815287) internal successors, (385), 319 states have internal predecessors, (385), 22 states have call successors, (22), 16 states have call predecessors, (22), 17 states have return successors, (23), 19 states have call predecessors, (23), 19 states have call successors, (23) [2021-12-22 00:19:36,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 430 transitions. [2021-12-22 00:19:36,419 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 430 transitions. Word has length 68 [2021-12-22 00:19:36,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:19:36,419 INFO L470 AbstractCegarLoop]: Abstraction has 354 states and 430 transitions. [2021-12-22 00:19:36,420 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.0) internal successors, (63), 7 states have internal predecessors, (63), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-22 00:19:36,420 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 430 transitions. [2021-12-22 00:19:36,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-12-22 00:19:36,422 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:19:36,422 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-22 00:19:36,422 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-12-22 00:19:36,422 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-22 00:19:36,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:19:36,422 INFO L85 PathProgramCache]: Analyzing trace with hash 162641819, now seen corresponding path program 1 times [2021-12-22 00:19:36,423 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 00:19:36,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072986941] [2021-12-22 00:19:36,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:19:36,423 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 00:19:36,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:19:36,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 00:19:36,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:19:36,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-22 00:19:36,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:19:36,492 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-12-22 00:19:36,492 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 00:19:36,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072986941] [2021-12-22 00:19:36,493 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072986941] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 00:19:36,493 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 00:19:36,493 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 00:19:36,493 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363246697] [2021-12-22 00:19:36,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 00:19:36,494 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 00:19:36,494 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 00:19:36,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 00:19:36,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 00:19:36,495 INFO L87 Difference]: Start difference. First operand 354 states and 430 transitions. Second operand has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 5 states have internal predecessors, (57), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-22 00:19:36,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:19:36,603 INFO L93 Difference]: Finished difference Result 389 states and 473 transitions. [2021-12-22 00:19:36,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-22 00:19:36,603 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 5 states have internal predecessors, (57), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 71 [2021-12-22 00:19:36,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:19:36,604 INFO L225 Difference]: With dead ends: 389 [2021-12-22 00:19:36,604 INFO L226 Difference]: Without dead ends: 389 [2021-12-22 00:19:36,604 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-12-22 00:19:36,605 INFO L933 BasicCegarLoop]: 229 mSDtfsCounter, 77 mSDsluCounter, 940 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 1169 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 00:19:36,605 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [80 Valid, 1169 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 00:19:36,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2021-12-22 00:19:36,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 262. [2021-12-22 00:19:36,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 231 states have (on average 1.1818181818181819) internal successors, (273), 235 states have internal predecessors, (273), 16 states have call successors, (16), 12 states have call predecessors, (16), 14 states have return successors, (19), 15 states have call predecessors, (19), 15 states have call successors, (19) [2021-12-22 00:19:36,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 308 transitions. [2021-12-22 00:19:36,609 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 308 transitions. Word has length 71 [2021-12-22 00:19:36,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:19:36,610 INFO L470 AbstractCegarLoop]: Abstraction has 262 states and 308 transitions. [2021-12-22 00:19:36,610 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 5 states have internal predecessors, (57), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-22 00:19:36,610 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 308 transitions. [2021-12-22 00:19:36,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-12-22 00:19:36,611 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:19:36,611 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] [2021-12-22 00:19:36,611 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-12-22 00:19:36,611 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-22 00:19:36,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:19:36,613 INFO L85 PathProgramCache]: Analyzing trace with hash 1179991342, now seen corresponding path program 1 times [2021-12-22 00:19:36,613 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 00:19:36,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313560919] [2021-12-22 00:19:36,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:19:36,613 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 00:19:36,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:19:36,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-22 00:19:36,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:19:36,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-22 00:19:36,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:19:36,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-22 00:19:36,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:19:36,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 00:19:36,669 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 00:19:36,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313560919] [2021-12-22 00:19:36,669 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313560919] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 00:19:36,669 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 00:19:36,669 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-22 00:19:36,669 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145532990] [2021-12-22 00:19:36,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 00:19:36,671 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-22 00:19:36,671 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 00:19:36,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-22 00:19:36,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-22 00:19:36,680 INFO L87 Difference]: Start difference. First operand 262 states and 308 transitions. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 5 states have internal predecessors, (67), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-22 00:19:36,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:19:36,791 INFO L93 Difference]: Finished difference Result 258 states and 301 transitions. [2021-12-22 00:19:36,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-22 00:19:36,792 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 5 states have internal predecessors, (67), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 74 [2021-12-22 00:19:36,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:19:36,793 INFO L225 Difference]: With dead ends: 258 [2021-12-22 00:19:36,793 INFO L226 Difference]: Without dead ends: 256 [2021-12-22 00:19:36,793 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-12-22 00:19:36,793 INFO L933 BasicCegarLoop]: 159 mSDtfsCounter, 46 mSDsluCounter, 899 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 1058 SdHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 00:19:36,794 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 1058 Invalid, 243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 00:19:36,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2021-12-22 00:19:36,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 208. [2021-12-22 00:19:36,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 184 states have (on average 1.1630434782608696) internal successors, (214), 187 states have internal predecessors, (214), 12 states have call successors, (12), 10 states have call predecessors, (12), 11 states have return successors, (13), 11 states have call predecessors, (13), 11 states have call successors, (13) [2021-12-22 00:19:36,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 239 transitions. [2021-12-22 00:19:36,797 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 239 transitions. Word has length 74 [2021-12-22 00:19:36,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:19:36,798 INFO L470 AbstractCegarLoop]: Abstraction has 208 states and 239 transitions. [2021-12-22 00:19:36,798 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 5 states have internal predecessors, (67), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-22 00:19:36,798 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 239 transitions. [2021-12-22 00:19:36,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-12-22 00:19:36,799 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:19:36,799 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] [2021-12-22 00:19:36,799 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-12-22 00:19:36,799 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-22 00:19:36,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:19:36,800 INFO L85 PathProgramCache]: Analyzing trace with hash 928752582, now seen corresponding path program 1 times [2021-12-22 00:19:36,800 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 00:19:36,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509463394] [2021-12-22 00:19:36,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:19:36,800 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 00:19:36,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:19:36,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-22 00:19:36,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:19:36,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-22 00:19:36,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:19:36,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-22 00:19:36,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:19:36,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 00:19:36,880 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 00:19:36,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509463394] [2021-12-22 00:19:36,880 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509463394] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 00:19:36,880 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 00:19:36,880 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-22 00:19:36,880 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987729067] [2021-12-22 00:19:36,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 00:19:36,880 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-22 00:19:36,880 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 00:19:36,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-22 00:19:36,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-22 00:19:36,881 INFO L87 Difference]: Start difference. First operand 208 states and 239 transitions. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 6 states have internal predecessors, (67), 3 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-22 00:19:37,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:19:37,076 INFO L93 Difference]: Finished difference Result 399 states and 460 transitions. [2021-12-22 00:19:37,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-22 00:19:37,076 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 6 states have internal predecessors, (67), 3 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 74 [2021-12-22 00:19:37,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:19:37,077 INFO L225 Difference]: With dead ends: 399 [2021-12-22 00:19:37,077 INFO L226 Difference]: Without dead ends: 359 [2021-12-22 00:19:37,077 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2021-12-22 00:19:37,078 INFO L933 BasicCegarLoop]: 279 mSDtfsCounter, 370 mSDsluCounter, 1089 mSDsCounter, 0 mSdLazyCounter, 458 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 370 SdHoareTripleChecker+Valid, 1368 SdHoareTripleChecker+Invalid, 531 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 458 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-22 00:19:37,078 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [370 Valid, 1368 Invalid, 531 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 458 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-22 00:19:37,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2021-12-22 00:19:37,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 188. [2021-12-22 00:19:37,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 168 states have (on average 1.1607142857142858) internal successors, (195), 170 states have internal predecessors, (195), 9 states have call successors, (9), 9 states have call predecessors, (9), 10 states have return successors, (10), 8 states have call predecessors, (10), 8 states have call successors, (10) [2021-12-22 00:19:37,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 214 transitions. [2021-12-22 00:19:37,081 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 214 transitions. Word has length 74 [2021-12-22 00:19:37,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:19:37,081 INFO L470 AbstractCegarLoop]: Abstraction has 188 states and 214 transitions. [2021-12-22 00:19:37,081 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 6 states have internal predecessors, (67), 3 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-22 00:19:37,081 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 214 transitions. [2021-12-22 00:19:37,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-12-22 00:19:37,081 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:19:37,081 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] [2021-12-22 00:19:37,081 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-12-22 00:19:37,082 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-22 00:19:37,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:19:37,082 INFO L85 PathProgramCache]: Analyzing trace with hash 1434511596, now seen corresponding path program 1 times [2021-12-22 00:19:37,082 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 00:19:37,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774786185] [2021-12-22 00:19:37,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:19:37,082 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 00:19:37,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:19:37,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 00:19:37,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:19:37,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-22 00:19:37,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:19:37,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 00:19:37,143 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 00:19:37,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774786185] [2021-12-22 00:19:37,143 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774786185] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 00:19:37,143 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 00:19:37,143 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-22 00:19:37,144 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138538914] [2021-12-22 00:19:37,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 00:19:37,144 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 00:19:37,144 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 00:19:37,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 00:19:37,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-22 00:19:37,145 INFO L87 Difference]: Start difference. First operand 188 states and 214 transitions. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-22 00:19:37,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:19:37,212 INFO L93 Difference]: Finished difference Result 196 states and 222 transitions. [2021-12-22 00:19:37,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-22 00:19:37,212 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 80 [2021-12-22 00:19:37,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:19:37,213 INFO L225 Difference]: With dead ends: 196 [2021-12-22 00:19:37,213 INFO L226 Difference]: Without dead ends: 194 [2021-12-22 00:19:37,213 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-12-22 00:19:37,213 INFO L933 BasicCegarLoop]: 141 mSDtfsCounter, 45 mSDsluCounter, 338 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 479 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 00:19:37,214 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [45 Valid, 479 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 00:19:37,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2021-12-22 00:19:37,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 188. [2021-12-22 00:19:37,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 168 states have (on average 1.1547619047619047) internal successors, (194), 170 states have internal predecessors, (194), 9 states have call successors, (9), 9 states have call predecessors, (9), 10 states have return successors, (10), 8 states have call predecessors, (10), 8 states have call successors, (10) [2021-12-22 00:19:37,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 213 transitions. [2021-12-22 00:19:37,217 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 213 transitions. Word has length 80 [2021-12-22 00:19:37,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:19:37,217 INFO L470 AbstractCegarLoop]: Abstraction has 188 states and 213 transitions. [2021-12-22 00:19:37,217 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-22 00:19:37,217 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 213 transitions. [2021-12-22 00:19:37,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-12-22 00:19:37,218 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:19:37,218 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-22 00:19:37,218 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-12-22 00:19:37,219 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-22 00:19:37,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:19:37,219 INFO L85 PathProgramCache]: Analyzing trace with hash 1155457, now seen corresponding path program 1 times [2021-12-22 00:19:37,219 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 00:19:37,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444096007] [2021-12-22 00:19:37,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:19:37,220 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 00:19:37,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:19:37,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 00:19:37,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:19:37,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-22 00:19:37,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:19:37,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-22 00:19:37,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:19:37,270 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-12-22 00:19:37,271 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 00:19:37,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444096007] [2021-12-22 00:19:37,271 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444096007] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 00:19:37,271 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 00:19:37,271 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-22 00:19:37,271 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898112026] [2021-12-22 00:19:37,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 00:19:37,272 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 00:19:37,272 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 00:19:37,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 00:19:37,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-22 00:19:37,274 INFO L87 Difference]: Start difference. First operand 188 states and 213 transitions. Second operand has 6 states, 6 states have (on average 13.0) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-22 00:19:37,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:19:37,352 INFO L93 Difference]: Finished difference Result 218 states and 247 transitions. [2021-12-22 00:19:37,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-22 00:19:37,352 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 100 [2021-12-22 00:19:37,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:19:37,353 INFO L225 Difference]: With dead ends: 218 [2021-12-22 00:19:37,353 INFO L226 Difference]: Without dead ends: 218 [2021-12-22 00:19:37,353 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-12-22 00:19:37,354 INFO L933 BasicCegarLoop]: 162 mSDtfsCounter, 47 mSDsluCounter, 487 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 649 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 00:19:37,354 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [48 Valid, 649 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 00:19:37,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2021-12-22 00:19:37,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 190. [2021-12-22 00:19:37,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 170 states have (on average 1.1529411764705881) internal successors, (196), 172 states have internal predecessors, (196), 9 states have call successors, (9), 9 states have call predecessors, (9), 10 states have return successors, (10), 8 states have call predecessors, (10), 8 states have call successors, (10) [2021-12-22 00:19:37,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 215 transitions. [2021-12-22 00:19:37,357 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 215 transitions. Word has length 100 [2021-12-22 00:19:37,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:19:37,357 INFO L470 AbstractCegarLoop]: Abstraction has 190 states and 215 transitions. [2021-12-22 00:19:37,357 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-22 00:19:37,357 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 215 transitions. [2021-12-22 00:19:37,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-12-22 00:19:37,358 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:19:37,358 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-22 00:19:37,358 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-12-22 00:19:37,358 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-22 00:19:37,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:19:37,359 INFO L85 PathProgramCache]: Analyzing trace with hash 877885761, now seen corresponding path program 1 times [2021-12-22 00:19:37,359 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 00:19:37,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649523474] [2021-12-22 00:19:37,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:19:37,359 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 00:19:37,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:19:37,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 00:19:37,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:19:37,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-22 00:19:37,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:19:37,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-22 00:19:37,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:19:37,435 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-12-22 00:19:37,436 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 00:19:37,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649523474] [2021-12-22 00:19:37,436 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649523474] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 00:19:37,436 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 00:19:37,436 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-22 00:19:37,436 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516016201] [2021-12-22 00:19:37,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 00:19:37,437 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-22 00:19:37,437 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 00:19:37,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-22 00:19:37,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-12-22 00:19:37,437 INFO L87 Difference]: Start difference. First operand 190 states and 215 transitions. Second operand has 10 states, 10 states have (on average 7.8) internal successors, (78), 8 states have internal predecessors, (78), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-22 00:19:37,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:19:37,607 INFO L93 Difference]: Finished difference Result 227 states and 258 transitions. [2021-12-22 00:19:37,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-22 00:19:37,607 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.8) internal successors, (78), 8 states have internal predecessors, (78), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 100 [2021-12-22 00:19:37,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:19:37,608 INFO L225 Difference]: With dead ends: 227 [2021-12-22 00:19:37,608 INFO L226 Difference]: Without dead ends: 194 [2021-12-22 00:19:37,608 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2021-12-22 00:19:37,609 INFO L933 BasicCegarLoop]: 133 mSDtfsCounter, 280 mSDsluCounter, 729 mSDsCounter, 0 mSdLazyCounter, 264 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 280 SdHoareTripleChecker+Valid, 862 SdHoareTripleChecker+Invalid, 305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 00:19:37,609 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [280 Valid, 862 Invalid, 305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 264 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 00:19:37,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2021-12-22 00:19:37,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 188. [2021-12-22 00:19:37,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 168 states have (on average 1.1428571428571428) internal successors, (192), 170 states have internal predecessors, (192), 9 states have call successors, (9), 9 states have call predecessors, (9), 10 states have return successors, (10), 8 states have call predecessors, (10), 8 states have call successors, (10) [2021-12-22 00:19:37,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 211 transitions. [2021-12-22 00:19:37,613 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 211 transitions. Word has length 100 [2021-12-22 00:19:37,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:19:37,613 INFO L470 AbstractCegarLoop]: Abstraction has 188 states and 211 transitions. [2021-12-22 00:19:37,613 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.8) internal successors, (78), 8 states have internal predecessors, (78), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-22 00:19:37,613 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 211 transitions. [2021-12-22 00:19:37,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-12-22 00:19:37,614 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:19:37,614 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-22 00:19:37,614 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-12-22 00:19:37,614 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-22 00:19:37,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:19:37,614 INFO L85 PathProgramCache]: Analyzing trace with hash 1148812128, now seen corresponding path program 1 times [2021-12-22 00:19:37,615 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 00:19:37,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675010897] [2021-12-22 00:19:37,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:19:37,615 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 00:19:37,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:19:37,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 00:19:37,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:19:37,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-22 00:19:37,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:19:37,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-22 00:19:37,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:19:37,728 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-12-22 00:19:37,728 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 00:19:37,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675010897] [2021-12-22 00:19:37,729 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675010897] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 00:19:37,729 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 00:19:37,729 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-12-22 00:19:37,729 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018836549] [2021-12-22 00:19:37,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 00:19:37,730 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-22 00:19:37,730 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 00:19:37,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-22 00:19:37,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2021-12-22 00:19:37,731 INFO L87 Difference]: Start difference. First operand 188 states and 211 transitions. Second operand has 14 states, 14 states have (on average 6.071428571428571) internal successors, (85), 11 states have internal predecessors, (85), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-22 00:19:38,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:19:38,011 INFO L93 Difference]: Finished difference Result 293 states and 337 transitions. [2021-12-22 00:19:38,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-22 00:19:38,011 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.071428571428571) internal successors, (85), 11 states have internal predecessors, (85), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 101 [2021-12-22 00:19:38,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:19:38,013 INFO L225 Difference]: With dead ends: 293 [2021-12-22 00:19:38,013 INFO L226 Difference]: Without dead ends: 262 [2021-12-22 00:19:38,014 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=108, Invalid=444, Unknown=0, NotChecked=0, Total=552 [2021-12-22 00:19:38,020 INFO L933 BasicCegarLoop]: 128 mSDtfsCounter, 473 mSDsluCounter, 1154 mSDsCounter, 0 mSdLazyCounter, 457 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 473 SdHoareTripleChecker+Valid, 1282 SdHoareTripleChecker+Invalid, 521 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 457 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-22 00:19:38,021 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [473 Valid, 1282 Invalid, 521 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 457 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-22 00:19:38,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2021-12-22 00:19:38,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 203. [2021-12-22 00:19:38,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 182 states have (on average 1.1483516483516483) internal successors, (209), 184 states have internal predecessors, (209), 9 states have call successors, (9), 9 states have call predecessors, (9), 11 states have return successors, (11), 9 states have call predecessors, (11), 8 states have call successors, (11) [2021-12-22 00:19:38,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 229 transitions. [2021-12-22 00:19:38,026 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 229 transitions. Word has length 101 [2021-12-22 00:19:38,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:19:38,027 INFO L470 AbstractCegarLoop]: Abstraction has 203 states and 229 transitions. [2021-12-22 00:19:38,027 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.071428571428571) internal successors, (85), 11 states have internal predecessors, (85), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-22 00:19:38,027 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 229 transitions. [2021-12-22 00:19:38,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-12-22 00:19:38,028 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:19:38,028 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-22 00:19:38,028 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-12-22 00:19:38,028 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-22 00:19:38,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:19:38,029 INFO L85 PathProgramCache]: Analyzing trace with hash 312231464, now seen corresponding path program 1 times [2021-12-22 00:19:38,029 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 00:19:38,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119711130] [2021-12-22 00:19:38,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:19:38,029 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 00:19:38,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:19:38,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 00:19:38,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:19:38,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-22 00:19:38,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:19:38,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-22 00:19:38,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:19:38,159 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-12-22 00:19:38,159 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 00:19:38,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119711130] [2021-12-22 00:19:38,159 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119711130] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 00:19:38,159 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 00:19:38,160 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-12-22 00:19:38,160 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458240779] [2021-12-22 00:19:38,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 00:19:38,160 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-22 00:19:38,160 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 00:19:38,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-22 00:19:38,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2021-12-22 00:19:38,161 INFO L87 Difference]: Start difference. First operand 203 states and 229 transitions. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 11 states have internal predecessors, (87), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-22 00:19:38,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:19:38,346 INFO L93 Difference]: Finished difference Result 220 states and 248 transitions. [2021-12-22 00:19:38,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-22 00:19:38,347 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 11 states have internal predecessors, (87), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 102 [2021-12-22 00:19:38,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:19:38,347 INFO L225 Difference]: With dead ends: 220 [2021-12-22 00:19:38,347 INFO L226 Difference]: Without dead ends: 217 [2021-12-22 00:19:38,348 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2021-12-22 00:19:38,348 INFO L933 BasicCegarLoop]: 148 mSDtfsCounter, 30 mSDsluCounter, 1461 mSDsCounter, 0 mSdLazyCounter, 391 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 1609 SdHoareTripleChecker+Invalid, 399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 391 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-22 00:19:38,348 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 1609 Invalid, 399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 391 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-22 00:19:38,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2021-12-22 00:19:38,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 203. [2021-12-22 00:19:38,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 182 states have (on average 1.1428571428571428) internal successors, (208), 184 states have internal predecessors, (208), 9 states have call successors, (9), 9 states have call predecessors, (9), 11 states have return successors, (11), 9 states have call predecessors, (11), 8 states have call successors, (11) [2021-12-22 00:19:38,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 228 transitions. [2021-12-22 00:19:38,350 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 228 transitions. Word has length 102 [2021-12-22 00:19:38,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:19:38,351 INFO L470 AbstractCegarLoop]: Abstraction has 203 states and 228 transitions. [2021-12-22 00:19:38,351 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 11 states have internal predecessors, (87), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-22 00:19:38,351 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 228 transitions. [2021-12-22 00:19:38,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-12-22 00:19:38,351 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:19:38,351 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-22 00:19:38,351 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-12-22 00:19:38,352 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-22 00:19:38,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:19:38,352 INFO L85 PathProgramCache]: Analyzing trace with hash -231607862, now seen corresponding path program 1 times [2021-12-22 00:19:38,352 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 00:19:38,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753673154] [2021-12-22 00:19:38,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:19:38,352 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 00:19:38,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:19:38,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 00:19:38,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:19:38,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-22 00:19:38,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:19:38,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-22 00:19:38,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:19:38,405 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-12-22 00:19:38,405 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 00:19:38,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753673154] [2021-12-22 00:19:38,405 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753673154] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 00:19:38,405 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 00:19:38,405 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-22 00:19:38,405 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738164266] [2021-12-22 00:19:38,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 00:19:38,406 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 00:19:38,406 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 00:19:38,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 00:19:38,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-22 00:19:38,406 INFO L87 Difference]: Start difference. First operand 203 states and 228 transitions. Second operand has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-22 00:19:38,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:19:38,473 INFO L93 Difference]: Finished difference Result 204 states and 226 transitions. [2021-12-22 00:19:38,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-22 00:19:38,473 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 105 [2021-12-22 00:19:38,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:19:38,474 INFO L225 Difference]: With dead ends: 204 [2021-12-22 00:19:38,474 INFO L226 Difference]: Without dead ends: 195 [2021-12-22 00:19:38,474 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-12-22 00:19:38,474 INFO L933 BasicCegarLoop]: 126 mSDtfsCounter, 175 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 277 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 00:19:38,475 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [178 Valid, 277 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 00:19:38,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2021-12-22 00:19:38,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 181. [2021-12-22 00:19:38,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 161 states have (on average 1.124223602484472) internal successors, (181), 163 states have internal predecessors, (181), 9 states have call successors, (9), 9 states have call predecessors, (9), 10 states have return successors, (10), 8 states have call predecessors, (10), 8 states have call successors, (10) [2021-12-22 00:19:38,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 200 transitions. [2021-12-22 00:19:38,478 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 200 transitions. Word has length 105 [2021-12-22 00:19:38,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:19:38,478 INFO L470 AbstractCegarLoop]: Abstraction has 181 states and 200 transitions. [2021-12-22 00:19:38,478 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-22 00:19:38,478 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 200 transitions. [2021-12-22 00:19:38,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-12-22 00:19:38,479 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:19:38,479 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-22 00:19:38,479 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-12-22 00:19:38,479 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-22 00:19:38,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:19:38,480 INFO L85 PathProgramCache]: Analyzing trace with hash -1876893126, now seen corresponding path program 1 times [2021-12-22 00:19:38,480 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 00:19:38,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497165641] [2021-12-22 00:19:38,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:19:38,480 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 00:19:38,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:19:38,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 00:19:38,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:19:38,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-22 00:19:38,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:19:38,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-22 00:19:38,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:19:38,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-22 00:19:38,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:19:38,561 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-12-22 00:19:38,561 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 00:19:38,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497165641] [2021-12-22 00:19:38,561 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497165641] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 00:19:38,561 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 00:19:38,562 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-22 00:19:38,562 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809707573] [2021-12-22 00:19:38,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 00:19:38,562 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-22 00:19:38,562 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 00:19:38,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-22 00:19:38,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-22 00:19:38,563 INFO L87 Difference]: Start difference. First operand 181 states and 200 transitions. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 5 states have internal predecessors, (93), 2 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-22 00:19:38,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:19:38,656 INFO L93 Difference]: Finished difference Result 170 states and 186 transitions. [2021-12-22 00:19:38,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-22 00:19:38,656 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 5 states have internal predecessors, (93), 2 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 111 [2021-12-22 00:19:38,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:19:38,658 INFO L225 Difference]: With dead ends: 170 [2021-12-22 00:19:38,659 INFO L226 Difference]: Without dead ends: 160 [2021-12-22 00:19:38,659 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-12-22 00:19:38,660 INFO L933 BasicCegarLoop]: 122 mSDtfsCounter, 66 mSDsluCounter, 502 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 624 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 00:19:38,660 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [66 Valid, 624 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 00:19:38,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2021-12-22 00:19:38,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2021-12-22 00:19:38,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 143 states have (on average 1.1118881118881119) internal successors, (159), 144 states have internal predecessors, (159), 8 states have call successors, (8), 8 states have call predecessors, (8), 8 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2021-12-22 00:19:38,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 175 transitions. [2021-12-22 00:19:38,662 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 175 transitions. Word has length 111 [2021-12-22 00:19:38,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:19:38,663 INFO L470 AbstractCegarLoop]: Abstraction has 160 states and 175 transitions. [2021-12-22 00:19:38,663 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 5 states have internal predecessors, (93), 2 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-22 00:19:38,663 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 175 transitions. [2021-12-22 00:19:38,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-12-22 00:19:38,663 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:19:38,664 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-22 00:19:38,664 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-12-22 00:19:38,665 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-22 00:19:38,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:19:38,665 INFO L85 PathProgramCache]: Analyzing trace with hash -1629424061, now seen corresponding path program 1 times [2021-12-22 00:19:38,665 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 00:19:38,665 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988791292] [2021-12-22 00:19:38,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:19:38,665 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 00:19:38,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:19:38,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 00:19:38,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:19:38,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-22 00:19:38,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:19:38,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-22 00:19:38,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:19:38,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-22 00:19:38,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:19:38,739 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-22 00:19:38,739 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 00:19:38,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988791292] [2021-12-22 00:19:38,739 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988791292] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 00:19:38,739 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 00:19:38,740 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-22 00:19:38,740 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359092837] [2021-12-22 00:19:38,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 00:19:38,740 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-22 00:19:38,740 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 00:19:38,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-22 00:19:38,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-22 00:19:38,741 INFO L87 Difference]: Start difference. First operand 160 states and 175 transitions. Second operand has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 6 states have internal predecessors, (91), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-22 00:19:38,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:19:38,933 INFO L93 Difference]: Finished difference Result 278 states and 303 transitions. [2021-12-22 00:19:38,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-22 00:19:38,934 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 6 states have internal predecessors, (91), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 112 [2021-12-22 00:19:38,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:19:38,934 INFO L225 Difference]: With dead ends: 278 [2021-12-22 00:19:38,934 INFO L226 Difference]: Without dead ends: 160 [2021-12-22 00:19:38,935 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2021-12-22 00:19:38,935 INFO L933 BasicCegarLoop]: 136 mSDtfsCounter, 136 mSDsluCounter, 619 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 755 SdHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 00:19:38,935 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [137 Valid, 755 Invalid, 248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 00:19:38,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2021-12-22 00:19:38,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2021-12-22 00:19:38,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 143 states have (on average 1.1048951048951048) internal successors, (158), 144 states have internal predecessors, (158), 8 states have call successors, (8), 8 states have call predecessors, (8), 8 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2021-12-22 00:19:38,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 174 transitions. [2021-12-22 00:19:38,937 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 174 transitions. Word has length 112 [2021-12-22 00:19:38,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:19:38,938 INFO L470 AbstractCegarLoop]: Abstraction has 160 states and 174 transitions. [2021-12-22 00:19:38,938 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 6 states have internal predecessors, (91), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-22 00:19:38,938 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 174 transitions. [2021-12-22 00:19:38,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-12-22 00:19:38,938 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:19:38,939 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-22 00:19:38,939 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-12-22 00:19:38,939 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-22 00:19:38,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:19:38,939 INFO L85 PathProgramCache]: Analyzing trace with hash 692377857, now seen corresponding path program 1 times [2021-12-22 00:19:38,939 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 00:19:38,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64126869] [2021-12-22 00:19:38,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:19:38,940 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 00:19:38,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:19:39,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 00:19:39,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:19:39,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-22 00:19:39,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:19:39,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-22 00:19:39,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:19:39,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-22 00:19:39,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:19:39,042 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-22 00:19:39,042 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 00:19:39,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64126869] [2021-12-22 00:19:39,042 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64126869] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 00:19:39,042 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 00:19:39,043 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-12-22 00:19:39,043 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013276196] [2021-12-22 00:19:39,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 00:19:39,043 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-22 00:19:39,043 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 00:19:39,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-22 00:19:39,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2021-12-22 00:19:39,044 INFO L87 Difference]: Start difference. First operand 160 states and 174 transitions. Second operand has 13 states, 13 states have (on average 7.0) internal successors, (91), 10 states have internal predecessors, (91), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-22 00:19:39,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:19:39,287 INFO L93 Difference]: Finished difference Result 170 states and 187 transitions. [2021-12-22 00:19:39,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-22 00:19:39,287 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 7.0) internal successors, (91), 10 states have internal predecessors, (91), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 112 [2021-12-22 00:19:39,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:19:39,288 INFO L225 Difference]: With dead ends: 170 [2021-12-22 00:19:39,288 INFO L226 Difference]: Without dead ends: 0 [2021-12-22 00:19:39,288 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=131, Invalid=421, Unknown=0, NotChecked=0, Total=552 [2021-12-22 00:19:39,288 INFO L933 BasicCegarLoop]: 112 mSDtfsCounter, 401 mSDsluCounter, 492 mSDsCounter, 0 mSdLazyCounter, 321 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 401 SdHoareTripleChecker+Valid, 604 SdHoareTripleChecker+Invalid, 395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 321 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 00:19:39,288 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [401 Valid, 604 Invalid, 395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 321 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 00:19:39,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-12-22 00:19:39,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-12-22 00:19:39,289 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) [2021-12-22 00:19:39,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-12-22 00:19:39,289 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 112 [2021-12-22 00:19:39,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:19:39,289 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-22 00:19:39,289 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.0) internal successors, (91), 10 states have internal predecessors, (91), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-22 00:19:39,289 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-12-22 00:19:39,289 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-12-22 00:19:39,291 INFO L764 garLoopResultBuilder]: Registering result SAFE for location errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK (1 of 2 remaining) [2021-12-22 00:19:39,292 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (0 of 2 remaining) [2021-12-22 00:19:39,292 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-12-22 00:19:39,294 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] [2021-12-22 00:19:39,294 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-22 00:19:39,296 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 12:19:39 BoogieIcfgContainer [2021-12-22 00:19:39,296 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-22 00:19:39,296 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-22 00:19:39,296 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-22 00:19:39,297 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-22 00:19:39,297 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 12:19:28" (3/4) ... [2021-12-22 00:19:39,298 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-12-22 00:19:39,302 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure KeWaitForSingleObject [2021-12-22 00:19:39,302 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure IoSetDeviceInterfaceState [2021-12-22 00:19:39,302 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure IofCompleteRequest [2021-12-22 00:19:39,302 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure errorFn [2021-12-22 00:19:39,303 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure IofCallDriver [2021-12-22 00:19:39,312 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 63 nodes and edges [2021-12-22 00:19:39,313 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 25 nodes and edges [2021-12-22 00:19:39,314 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2021-12-22 00:19:39,314 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-12-22 00:19:39,378 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-22 00:19:39,379 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-22 00:19:39,379 INFO L158 Benchmark]: Toolchain (without parser) took 12357.97ms. Allocated memory was 132.1MB in the beginning and 234.9MB in the end (delta: 102.8MB). Free memory was 98.4MB in the beginning and 136.4MB in the end (delta: -38.0MB). Peak memory consumption was 62.9MB. Max. memory is 16.1GB. [2021-12-22 00:19:39,379 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 73.4MB. Free memory was 33.7MB in the beginning and 33.6MB in the end (delta: 40.0kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-22 00:19:39,379 INFO L158 Benchmark]: CACSL2BoogieTranslator took 358.79ms. Allocated memory is still 132.1MB. Free memory was 98.4MB in the beginning and 97.0MB in the end (delta: 1.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-22 00:19:39,380 INFO L158 Benchmark]: Boogie Procedure Inliner took 72.54ms. Allocated memory is still 132.1MB. Free memory was 97.0MB in the beginning and 92.1MB in the end (delta: 4.9MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-12-22 00:19:39,380 INFO L158 Benchmark]: Boogie Preprocessor took 61.10ms. Allocated memory is still 132.1MB. Free memory was 92.1MB in the beginning and 89.2MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-22 00:19:39,380 INFO L158 Benchmark]: RCFGBuilder took 608.14ms. Allocated memory is still 132.1MB. Free memory was 89.2MB in the beginning and 45.2MB in the end (delta: 44.0MB). Peak memory consumption was 44.0MB. Max. memory is 16.1GB. [2021-12-22 00:19:39,380 INFO L158 Benchmark]: TraceAbstraction took 11169.49ms. Allocated memory was 132.1MB in the beginning and 234.9MB in the end (delta: 102.8MB). Free memory was 44.6MB in the beginning and 155.3MB in the end (delta: -110.7MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-22 00:19:39,380 INFO L158 Benchmark]: Witness Printer took 82.46ms. Allocated memory is still 234.9MB. Free memory was 155.3MB in the beginning and 136.4MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2021-12-22 00:19:39,381 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 73.4MB. Free memory was 33.7MB in the beginning and 33.6MB in the end (delta: 40.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 358.79ms. Allocated memory is still 132.1MB. Free memory was 98.4MB in the beginning and 97.0MB in the end (delta: 1.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 72.54ms. Allocated memory is still 132.1MB. Free memory was 97.0MB in the beginning and 92.1MB in the end (delta: 4.9MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 61.10ms. Allocated memory is still 132.1MB. Free memory was 92.1MB in the beginning and 89.2MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 608.14ms. Allocated memory is still 132.1MB. Free memory was 89.2MB in the beginning and 45.2MB in the end (delta: 44.0MB). Peak memory consumption was 44.0MB. Max. memory is 16.1GB. * TraceAbstraction took 11169.49ms. Allocated memory was 132.1MB in the beginning and 234.9MB in the end (delta: 102.8MB). Free memory was 44.6MB in the beginning and 155.3MB in the end (delta: -110.7MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 82.46ms. Allocated memory is still 234.9MB. Free memory was 155.3MB in the beginning and 136.4MB in the end (delta: 18.9MB). 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: 65]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 670]: 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 6 procedures, 238 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 11.1s, OverallIterations: 48, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 7.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 8824 SdHoareTripleChecker+Valid, 5.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 8690 mSDsluCounter, 49205 SdHoareTripleChecker+Invalid, 4.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 36770 mSDsCounter, 1342 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 10323 IncrementalHoareTripleChecker+Invalid, 11665 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1342 mSolverCounterUnsat, 12435 mSDtfsCounter, 10323 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 587 GetRequests, 211 SyntacticMatches, 1 SemanticMatches, 375 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 208 ImplicationChecksByTransitivity, 1.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=643occurred in iteration=13, InterpolantAutomatonStates: 361, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 48 MinimizatonAttempts, 1430 StatesRemovedByMinimization, 42 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 2.3s InterpolantComputationTime, 2599 NumberOfCodeBlocks, 2599 NumberOfCodeBlocksAsserted, 48 NumberOfCheckSat, 2551 ConstructedInterpolants, 0 QuantifiedInterpolants, 5949 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 48 InterpolantComputations, 48 PerfectInterpolantSequences, 140/140 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! [2021-12-22 00:19:39,405 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE