./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/ntdrivers-simplified/kbfiltr_simpl1.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 6c24879c 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/kbfiltr_simpl1.cil.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 db1e722f73dbd7795cdbaca4c816f6c8a0f90138145d9f90bf0f222b7dd371eb --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 19:26:16,102 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 19:26:16,112 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 19:26:16,165 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 19:26:16,165 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 19:26:16,166 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 19:26:16,168 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 19:26:16,169 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 19:26:16,170 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 19:26:16,173 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 19:26:16,174 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 19:26:16,176 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 19:26:16,176 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 19:26:16,178 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 19:26:16,179 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 19:26:16,181 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 19:26:16,182 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 19:26:16,183 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 19:26:16,184 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 19:26:16,188 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 19:26:16,189 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 19:26:16,189 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 19:26:16,190 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 19:26:16,191 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 19:26:16,192 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 19:26:16,196 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 19:26:16,197 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 19:26:16,197 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 19:26:16,198 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 19:26:16,198 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 19:26:16,199 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 19:26:16,199 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 19:26:16,201 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 19:26:16,201 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 19:26:16,202 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 19:26:16,202 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 19:26:16,202 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 19:26:16,203 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 19:26:16,203 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 19:26:16,203 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 19:26:16,203 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 19:26:16,205 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 19:26:16,205 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-07-12 19:26:16,232 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 19:26:16,232 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 19:26:16,233 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 19:26:16,233 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 19:26:16,233 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 19:26:16,234 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 19:26:16,234 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 19:26:16,234 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 19:26:16,234 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 19:26:16,235 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 19:26:16,235 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 19:26:16,235 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-12 19:26:16,235 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 19:26:16,235 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 19:26:16,236 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 19:26:16,236 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-07-12 19:26:16,236 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-07-12 19:26:16,236 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-07-12 19:26:16,236 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 19:26:16,237 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-12 19:26:16,237 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 19:26:16,237 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 19:26:16,237 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 19:26:16,237 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 19:26:16,238 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 19:26:16,238 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 19:26:16,238 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 19:26:16,238 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 19:26:16,238 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 19:26:16,238 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 19:26:16,239 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> db1e722f73dbd7795cdbaca4c816f6c8a0f90138145d9f90bf0f222b7dd371eb [2022-07-12 19:26:16,456 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 19:26:16,479 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 19:26:16,481 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 19:26:16,481 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 19:26:16,482 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 19:26:16,483 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ntdrivers-simplified/kbfiltr_simpl1.cil.c [2022-07-12 19:26:16,534 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c637c18f7/9872e40def934fe9923f25e8197a5459/FLAGa429522a9 [2022-07-12 19:26:16,907 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 19:26:16,908 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ntdrivers-simplified/kbfiltr_simpl1.cil.c [2022-07-12 19:26:16,916 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c637c18f7/9872e40def934fe9923f25e8197a5459/FLAGa429522a9 [2022-07-12 19:26:16,929 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c637c18f7/9872e40def934fe9923f25e8197a5459 [2022-07-12 19:26:16,931 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 19:26:16,932 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 19:26:16,934 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 19:26:16,934 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 19:26:16,937 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 19:26:16,937 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 07:26:16" (1/1) ... [2022-07-12 19:26:16,938 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41a1ea70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:26:16, skipping insertion in model container [2022-07-12 19:26:16,938 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 07:26:16" (1/1) ... [2022-07-12 19:26:16,943 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 19:26:16,977 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 19:26:17,136 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/kbfiltr_simpl1.cil.c[17080,17093] [2022-07-12 19:26:17,138 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 19:26:17,143 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 19:26:17,183 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/kbfiltr_simpl1.cil.c[17080,17093] [2022-07-12 19:26:17,184 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 19:26:17,193 INFO L208 MainTranslator]: Completed translation [2022-07-12 19:26:17,194 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:26:17 WrapperNode [2022-07-12 19:26:17,194 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 19:26:17,194 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 19:26:17,195 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 19:26:17,195 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 19:26:17,205 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:26:17" (1/1) ... [2022-07-12 19:26:17,212 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:26:17" (1/1) ... [2022-07-12 19:26:17,235 INFO L137 Inliner]: procedures = 24, calls = 29, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 423 [2022-07-12 19:26:17,236 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 19:26:17,236 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 19:26:17,237 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 19:26:17,237 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 19:26:17,244 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:26:17" (1/1) ... [2022-07-12 19:26:17,244 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:26:17" (1/1) ... [2022-07-12 19:26:17,246 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:26:17" (1/1) ... [2022-07-12 19:26:17,247 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:26:17" (1/1) ... [2022-07-12 19:26:17,251 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:26:17" (1/1) ... [2022-07-12 19:26:17,254 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:26:17" (1/1) ... [2022-07-12 19:26:17,256 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:26:17" (1/1) ... [2022-07-12 19:26:17,258 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 19:26:17,259 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 19:26:17,259 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 19:26:17,259 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 19:26:17,260 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:26:17" (1/1) ... [2022-07-12 19:26:17,277 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 19:26:17,286 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 19:26:17,298 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) [2022-07-12 19:26:17,300 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 [2022-07-12 19:26:17,338 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 19:26:17,339 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2022-07-12 19:26:17,339 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2022-07-12 19:26:17,339 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 19:26:17,339 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2022-07-12 19:26:17,339 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2022-07-12 19:26:17,339 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 19:26:17,339 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 19:26:17,459 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 19:26:17,460 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 19:26:17,503 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-12 19:26:17,506 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-12 19:26:17,508 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-12 19:26:17,744 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##82: assume !false; [2022-07-12 19:26:17,745 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##81: assume false; [2022-07-12 19:26:17,745 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##58: assume !false; [2022-07-12 19:26:17,745 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##57: assume false; [2022-07-12 19:26:17,745 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##14: assume !false; [2022-07-12 19:26:17,745 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##13: assume false; [2022-07-12 19:26:17,746 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-12 19:26:17,784 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2022-07-12 19:26:17,784 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2022-07-12 19:26:17,786 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 19:26:17,795 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 19:26:17,795 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-12 19:26:17,796 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 07:26:17 BoogieIcfgContainer [2022-07-12 19:26:17,797 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 19:26:17,798 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 19:26:17,798 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 19:26:17,801 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 19:26:17,801 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 07:26:16" (1/3) ... [2022-07-12 19:26:17,802 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@183f3ceb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 07:26:17, skipping insertion in model container [2022-07-12 19:26:17,802 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:26:17" (2/3) ... [2022-07-12 19:26:17,803 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@183f3ceb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 07:26:17, skipping insertion in model container [2022-07-12 19:26:17,803 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 07:26:17" (3/3) ... [2022-07-12 19:26:17,804 INFO L111 eAbstractionObserver]: Analyzing ICFG kbfiltr_simpl1.cil.c [2022-07-12 19:26:17,813 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 19:26:17,813 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-12 19:26:17,853 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 19:26:17,857 INFO L357 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, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@1c57b017, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@56a6f439 [2022-07-12 19:26:17,857 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-12 19:26:17,861 INFO L276 IsEmpty]: Start isEmpty. Operand has 122 states, 103 states have (on average 1.6213592233009708) internal successors, (167), 115 states have internal predecessors, (167), 14 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2022-07-12 19:26:17,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-07-12 19:26:17,866 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 19:26:17,867 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 19:26:17,867 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-12 19:26:17,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 19:26:17,880 INFO L85 PathProgramCache]: Analyzing trace with hash -266564522, now seen corresponding path program 1 times [2022-07-12 19:26:17,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 19:26:17,887 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211780949] [2022-07-12 19:26:17,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 19:26:17,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 19:26:17,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 19:26:18,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 19:26:18,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 19:26:18,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211780949] [2022-07-12 19:26:18,027 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211780949] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 19:26:18,027 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 19:26:18,027 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 19:26:18,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882859956] [2022-07-12 19:26:18,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 19:26:18,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 19:26:18,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 19:26:18,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 19:26:18,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 19:26:18,052 INFO L87 Difference]: Start difference. First operand has 122 states, 103 states have (on average 1.6213592233009708) internal successors, (167), 115 states have internal predecessors, (167), 14 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) 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) [2022-07-12 19:26:18,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 19:26:18,104 INFO L93 Difference]: Finished difference Result 124 states and 184 transitions. [2022-07-12 19:26:18,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 19:26:18,106 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 [2022-07-12 19:26:18,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 19:26:18,111 INFO L225 Difference]: With dead ends: 124 [2022-07-12 19:26:18,112 INFO L226 Difference]: Without dead ends: 120 [2022-07-12 19:26:18,113 INFO L412 NwaCegarLoop]: 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 [2022-07-12 19:26:18,117 INFO L413 NwaCegarLoop]: 179 mSDtfsCounter, 103 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 244 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 19:26:18,119 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 244 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 19:26:18,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2022-07-12 19:26:18,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 118. [2022-07-12 19:26:18,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 101 states have (on average 1.5940594059405941) internal successors, (161), 111 states have internal predecessors, (161), 14 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-07-12 19:26:18,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 179 transitions. [2022-07-12 19:26:18,151 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 179 transitions. Word has length 8 [2022-07-12 19:26:18,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 19:26:18,151 INFO L495 AbstractCegarLoop]: Abstraction has 118 states and 179 transitions. [2022-07-12 19:26:18,151 INFO L496 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) [2022-07-12 19:26:18,151 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 179 transitions. [2022-07-12 19:26:18,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-07-12 19:26:18,152 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 19:26:18,152 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 19:26:18,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 19:26:18,152 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-12 19:26:18,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 19:26:18,153 INFO L85 PathProgramCache]: Analyzing trace with hash 1449477596, now seen corresponding path program 1 times [2022-07-12 19:26:18,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 19:26:18,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757446467] [2022-07-12 19:26:18,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 19:26:18,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 19:26:18,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 19:26:18,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 19:26:18,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 19:26:18,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757446467] [2022-07-12 19:26:18,192 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757446467] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 19:26:18,192 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 19:26:18,192 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 19:26:18,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598057703] [2022-07-12 19:26:18,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 19:26:18,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 19:26:18,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 19:26:18,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 19:26:18,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 19:26:18,194 INFO L87 Difference]: Start difference. First operand 118 states and 179 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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) [2022-07-12 19:26:18,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 19:26:18,204 INFO L93 Difference]: Finished difference Result 118 states and 178 transitions. [2022-07-12 19:26:18,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 19:26:18,205 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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 10 [2022-07-12 19:26:18,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 19:26:18,206 INFO L225 Difference]: With dead ends: 118 [2022-07-12 19:26:18,206 INFO L226 Difference]: Without dead ends: 118 [2022-07-12 19:26:18,206 INFO L412 NwaCegarLoop]: 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 [2022-07-12 19:26:18,207 INFO L413 NwaCegarLoop]: 177 mSDtfsCounter, 124 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 19:26:18,208 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 225 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 19:26:18,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2022-07-12 19:26:18,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2022-07-12 19:26:18,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 101 states have (on average 1.5841584158415842) internal successors, (160), 111 states have internal predecessors, (160), 14 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-07-12 19:26:18,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 178 transitions. [2022-07-12 19:26:18,220 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 178 transitions. Word has length 10 [2022-07-12 19:26:18,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 19:26:18,220 INFO L495 AbstractCegarLoop]: Abstraction has 118 states and 178 transitions. [2022-07-12 19:26:18,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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) [2022-07-12 19:26:18,221 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 178 transitions. [2022-07-12 19:26:18,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-07-12 19:26:18,222 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 19:26:18,222 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 19:26:18,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 19:26:18,223 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-12 19:26:18,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 19:26:18,224 INFO L85 PathProgramCache]: Analyzing trace with hash 1378319021, now seen corresponding path program 1 times [2022-07-12 19:26:18,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 19:26:18,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182437611] [2022-07-12 19:26:18,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 19:26:18,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 19:26:18,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 19:26:18,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 19:26:18,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 19:26:18,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182437611] [2022-07-12 19:26:18,253 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182437611] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 19:26:18,253 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 19:26:18,253 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 19:26:18,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441829799] [2022-07-12 19:26:18,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 19:26:18,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 19:26:18,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 19:26:18,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 19:26:18,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 19:26:18,255 INFO L87 Difference]: Start difference. First operand 118 states and 178 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 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) [2022-07-12 19:26:18,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 19:26:18,280 INFO L93 Difference]: Finished difference Result 117 states and 177 transitions. [2022-07-12 19:26:18,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 19:26:18,280 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 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 12 [2022-07-12 19:26:18,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 19:26:18,281 INFO L225 Difference]: With dead ends: 117 [2022-07-12 19:26:18,283 INFO L226 Difference]: Without dead ends: 111 [2022-07-12 19:26:18,283 INFO L412 NwaCegarLoop]: 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 [2022-07-12 19:26:18,284 INFO L413 NwaCegarLoop]: 177 mSDtfsCounter, 121 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 19:26:18,285 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 206 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 19:26:18,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2022-07-12 19:26:18,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2022-07-12 19:26:18,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 95 states have (on average 1.5052631578947369) internal successors, (143), 104 states have internal predecessors, (143), 14 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-07-12 19:26:18,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 161 transitions. [2022-07-12 19:26:18,292 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 161 transitions. Word has length 12 [2022-07-12 19:26:18,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 19:26:18,292 INFO L495 AbstractCegarLoop]: Abstraction has 111 states and 161 transitions. [2022-07-12 19:26:18,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 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) [2022-07-12 19:26:18,293 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 161 transitions. [2022-07-12 19:26:18,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-07-12 19:26:18,293 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 19:26:18,293 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 19:26:18,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-12 19:26:18,294 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-12 19:26:18,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 19:26:18,294 INFO L85 PathProgramCache]: Analyzing trace with hash -1664018970, now seen corresponding path program 1 times [2022-07-12 19:26:18,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 19:26:18,294 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824891903] [2022-07-12 19:26:18,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 19:26:18,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 19:26:18,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 19:26:18,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 19:26:18,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 19:26:18,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824891903] [2022-07-12 19:26:18,343 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824891903] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 19:26:18,343 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 19:26:18,343 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 19:26:18,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292144773] [2022-07-12 19:26:18,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 19:26:18,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 19:26:18,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 19:26:18,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 19:26:18,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 19:26:18,344 INFO L87 Difference]: Start difference. First operand 111 states and 161 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 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) [2022-07-12 19:26:18,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 19:26:18,400 INFO L93 Difference]: Finished difference Result 157 states and 219 transitions. [2022-07-12 19:26:18,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 19:26:18,400 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 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 16 [2022-07-12 19:26:18,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 19:26:18,402 INFO L225 Difference]: With dead ends: 157 [2022-07-12 19:26:18,402 INFO L226 Difference]: Without dead ends: 156 [2022-07-12 19:26:18,402 INFO L412 NwaCegarLoop]: 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 [2022-07-12 19:26:18,403 INFO L413 NwaCegarLoop]: 176 mSDtfsCounter, 112 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 237 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 19:26:18,403 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 237 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 19:26:18,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2022-07-12 19:26:18,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 143. [2022-07-12 19:26:18,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 130 states have (on average 1.4230769230769231) internal successors, (185), 131 states have internal predecessors, (185), 10 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 8 states have call predecessors, (8), 4 states have call successors, (8) [2022-07-12 19:26:18,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 203 transitions. [2022-07-12 19:26:18,412 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 203 transitions. Word has length 16 [2022-07-12 19:26:18,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 19:26:18,412 INFO L495 AbstractCegarLoop]: Abstraction has 143 states and 203 transitions. [2022-07-12 19:26:18,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 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) [2022-07-12 19:26:18,412 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 203 transitions. [2022-07-12 19:26:18,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-07-12 19:26:18,413 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 19:26:18,413 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 19:26:18,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-12 19:26:18,413 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-12 19:26:18,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 19:26:18,414 INFO L85 PathProgramCache]: Analyzing trace with hash -45143888, now seen corresponding path program 1 times [2022-07-12 19:26:18,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 19:26:18,414 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385412384] [2022-07-12 19:26:18,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 19:26:18,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 19:26:18,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 19:26:18,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 19:26:18,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 19:26:18,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385412384] [2022-07-12 19:26:18,457 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385412384] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 19:26:18,457 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 19:26:18,457 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 19:26:18,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071437457] [2022-07-12 19:26:18,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 19:26:18,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 19:26:18,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 19:26:18,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 19:26:18,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 19:26:18,459 INFO L87 Difference]: Start difference. First operand 143 states and 203 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 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) [2022-07-12 19:26:18,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 19:26:18,489 INFO L93 Difference]: Finished difference Result 198 states and 275 transitions. [2022-07-12 19:26:18,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 19:26:18,490 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), 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 17 [2022-07-12 19:26:18,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 19:26:18,496 INFO L225 Difference]: With dead ends: 198 [2022-07-12 19:26:18,496 INFO L226 Difference]: Without dead ends: 198 [2022-07-12 19:26:18,496 INFO L412 NwaCegarLoop]: 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 [2022-07-12 19:26:18,497 INFO L413 NwaCegarLoop]: 149 mSDtfsCounter, 128 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 19:26:18,501 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 222 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 19:26:18,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2022-07-12 19:26:18,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 154. [2022-07-12 19:26:18,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 141 states have (on average 1.4113475177304964) internal successors, (199), 142 states have internal predecessors, (199), 8 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (9), 8 states have call predecessors, (9), 4 states have call successors, (9) [2022-07-12 19:26:18,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 216 transitions. [2022-07-12 19:26:18,524 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 216 transitions. Word has length 17 [2022-07-12 19:26:18,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 19:26:18,528 INFO L495 AbstractCegarLoop]: Abstraction has 154 states and 216 transitions. [2022-07-12 19:26:18,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 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) [2022-07-12 19:26:18,528 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 216 transitions. [2022-07-12 19:26:18,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-07-12 19:26:18,529 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 19:26:18,529 INFO L195 NwaCegarLoop]: 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] [2022-07-12 19:26:18,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-12 19:26:18,530 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-12 19:26:18,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 19:26:18,534 INFO L85 PathProgramCache]: Analyzing trace with hash -1029494523, now seen corresponding path program 1 times [2022-07-12 19:26:18,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 19:26:18,534 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468440754] [2022-07-12 19:26:18,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 19:26:18,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 19:26:18,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 19:26:18,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 19:26:18,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 19:26:18,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468440754] [2022-07-12 19:26:18,653 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1468440754] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 19:26:18,653 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 19:26:18,653 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 19:26:18,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538813100] [2022-07-12 19:26:18,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 19:26:18,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 19:26:18,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 19:26:18,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 19:26:18,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 19:26:18,654 INFO L87 Difference]: Start difference. First operand 154 states and 216 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) [2022-07-12 19:26:18,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 19:26:18,703 INFO L93 Difference]: Finished difference Result 154 states and 215 transitions. [2022-07-12 19:26:18,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 19:26:18,704 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 [2022-07-12 19:26:18,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 19:26:18,706 INFO L225 Difference]: With dead ends: 154 [2022-07-12 19:26:18,706 INFO L226 Difference]: Without dead ends: 154 [2022-07-12 19:26:18,706 INFO L412 NwaCegarLoop]: 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 [2022-07-12 19:26:18,707 INFO L413 NwaCegarLoop]: 155 mSDtfsCounter, 10 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 262 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 19:26:18,708 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 262 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 19:26:18,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2022-07-12 19:26:18,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2022-07-12 19:26:18,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 141 states have (on average 1.4042553191489362) internal successors, (198), 142 states have internal predecessors, (198), 8 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (9), 8 states have call predecessors, (9), 4 states have call successors, (9) [2022-07-12 19:26:18,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 215 transitions. [2022-07-12 19:26:18,714 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 215 transitions. Word has length 27 [2022-07-12 19:26:18,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 19:26:18,714 INFO L495 AbstractCegarLoop]: Abstraction has 154 states and 215 transitions. [2022-07-12 19:26:18,714 INFO L496 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) [2022-07-12 19:26:18,714 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 215 transitions. [2022-07-12 19:26:18,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-07-12 19:26:18,715 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 19:26:18,716 INFO L195 NwaCegarLoop]: 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] [2022-07-12 19:26:18,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-12 19:26:18,716 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-12 19:26:18,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 19:26:18,717 INFO L85 PathProgramCache]: Analyzing trace with hash 1061957582, now seen corresponding path program 1 times [2022-07-12 19:26:18,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 19:26:18,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68486578] [2022-07-12 19:26:18,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 19:26:18,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 19:26:18,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 19:26:18,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 19:26:18,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 19:26:18,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68486578] [2022-07-12 19:26:18,756 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68486578] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 19:26:18,756 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 19:26:18,756 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 19:26:18,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099689639] [2022-07-12 19:26:18,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 19:26:18,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 19:26:18,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 19:26:18,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 19:26:18,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 19:26:18,757 INFO L87 Difference]: Start difference. First operand 154 states and 215 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 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) [2022-07-12 19:26:18,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 19:26:18,801 INFO L93 Difference]: Finished difference Result 152 states and 211 transitions. [2022-07-12 19:26:18,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 19:26:18,802 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 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 31 [2022-07-12 19:26:18,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 19:26:18,803 INFO L225 Difference]: With dead ends: 152 [2022-07-12 19:26:18,803 INFO L226 Difference]: Without dead ends: 152 [2022-07-12 19:26:18,803 INFO L412 NwaCegarLoop]: 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 [2022-07-12 19:26:18,806 INFO L413 NwaCegarLoop]: 155 mSDtfsCounter, 5 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 269 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 19:26:18,807 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 269 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 19:26:18,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2022-07-12 19:26:18,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 152. [2022-07-12 19:26:18,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 140 states have (on average 1.3928571428571428) internal successors, (195), 140 states have internal predecessors, (195), 7 states have call successors, (7), 3 states have call predecessors, (7), 4 states have return successors, (9), 8 states have call predecessors, (9), 4 states have call successors, (9) [2022-07-12 19:26:18,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 211 transitions. [2022-07-12 19:26:18,817 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 211 transitions. Word has length 31 [2022-07-12 19:26:18,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 19:26:18,817 INFO L495 AbstractCegarLoop]: Abstraction has 152 states and 211 transitions. [2022-07-12 19:26:18,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 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) [2022-07-12 19:26:18,817 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 211 transitions. [2022-07-12 19:26:18,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-07-12 19:26:18,819 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 19:26:18,819 INFO L195 NwaCegarLoop]: 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] [2022-07-12 19:26:18,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-12 19:26:18,819 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-12 19:26:18,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 19:26:18,820 INFO L85 PathProgramCache]: Analyzing trace with hash -325305154, now seen corresponding path program 1 times [2022-07-12 19:26:18,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 19:26:18,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366177577] [2022-07-12 19:26:18,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 19:26:18,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 19:26:18,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 19:26:18,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-12 19:26:18,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 19:26:18,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 19:26:18,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 19:26:18,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366177577] [2022-07-12 19:26:18,880 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366177577] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 19:26:18,880 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 19:26:18,880 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 19:26:18,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026072617] [2022-07-12 19:26:18,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 19:26:18,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 19:26:18,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 19:26:18,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 19:26:18,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-12 19:26:18,885 INFO L87 Difference]: Start difference. First operand 152 states and 211 transitions. Second operand has 6 states, 6 states have (on average 5.0) internal successors, (30), 5 states have internal predecessors, (30), 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) [2022-07-12 19:26:18,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 19:26:18,999 INFO L93 Difference]: Finished difference Result 161 states and 219 transitions. [2022-07-12 19:26:18,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-12 19:26:19,000 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.0) internal successors, (30), 5 states have internal predecessors, (30), 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 33 [2022-07-12 19:26:19,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 19:26:19,001 INFO L225 Difference]: With dead ends: 161 [2022-07-12 19:26:19,001 INFO L226 Difference]: Without dead ends: 161 [2022-07-12 19:26:19,002 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-07-12 19:26:19,009 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 293 mSDsluCounter, 311 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 293 SdHoareTripleChecker+Valid, 480 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 19:26:19,011 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [293 Valid, 480 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 19:26:19,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2022-07-12 19:26:19,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 145. [2022-07-12 19:26:19,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 133 states have (on average 1.3909774436090225) internal successors, (185), 133 states have internal predecessors, (185), 7 states have call successors, (7), 3 states have call predecessors, (7), 4 states have return successors, (8), 8 states have call predecessors, (8), 4 states have call successors, (8) [2022-07-12 19:26:19,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 200 transitions. [2022-07-12 19:26:19,021 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 200 transitions. Word has length 33 [2022-07-12 19:26:19,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 19:26:19,021 INFO L495 AbstractCegarLoop]: Abstraction has 145 states and 200 transitions. [2022-07-12 19:26:19,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.0) internal successors, (30), 5 states have internal predecessors, (30), 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) [2022-07-12 19:26:19,021 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 200 transitions. [2022-07-12 19:26:19,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-07-12 19:26:19,022 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 19:26:19,022 INFO L195 NwaCegarLoop]: 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] [2022-07-12 19:26:19,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-12 19:26:19,022 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-12 19:26:19,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 19:26:19,023 INFO L85 PathProgramCache]: Analyzing trace with hash 1305656279, now seen corresponding path program 1 times [2022-07-12 19:26:19,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 19:26:19,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514069845] [2022-07-12 19:26:19,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 19:26:19,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 19:26:19,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 19:26:19,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-12 19:26:19,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 19:26:19,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 19:26:19,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 19:26:19,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514069845] [2022-07-12 19:26:19,110 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514069845] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 19:26:19,110 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 19:26:19,110 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 19:26:19,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212056240] [2022-07-12 19:26:19,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 19:26:19,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 19:26:19,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 19:26:19,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 19:26:19,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-12 19:26:19,111 INFO L87 Difference]: Start difference. First operand 145 states and 200 transitions. Second operand has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 5 states have internal predecessors, (34), 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) [2022-07-12 19:26:19,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 19:26:19,230 INFO L93 Difference]: Finished difference Result 145 states and 199 transitions. [2022-07-12 19:26:19,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 19:26:19,230 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 5 states have internal predecessors, (34), 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 37 [2022-07-12 19:26:19,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 19:26:19,233 INFO L225 Difference]: With dead ends: 145 [2022-07-12 19:26:19,233 INFO L226 Difference]: Without dead ends: 145 [2022-07-12 19:26:19,233 INFO L412 NwaCegarLoop]: 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 [2022-07-12 19:26:19,235 INFO L413 NwaCegarLoop]: 137 mSDtfsCounter, 160 mSDsluCounter, 328 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 465 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 19:26:19,236 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 465 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 19:26:19,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2022-07-12 19:26:19,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2022-07-12 19:26:19,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 133 states have (on average 1.3834586466165413) internal successors, (184), 133 states have internal predecessors, (184), 7 states have call successors, (7), 3 states have call predecessors, (7), 4 states have return successors, (8), 8 states have call predecessors, (8), 4 states have call successors, (8) [2022-07-12 19:26:19,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 199 transitions. [2022-07-12 19:26:19,243 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 199 transitions. Word has length 37 [2022-07-12 19:26:19,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 19:26:19,244 INFO L495 AbstractCegarLoop]: Abstraction has 145 states and 199 transitions. [2022-07-12 19:26:19,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 5 states have internal predecessors, (34), 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) [2022-07-12 19:26:19,244 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 199 transitions. [2022-07-12 19:26:19,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-07-12 19:26:19,251 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 19:26:19,252 INFO L195 NwaCegarLoop]: 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] [2022-07-12 19:26:19,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-12 19:26:19,252 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-12 19:26:19,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 19:26:19,253 INFO L85 PathProgramCache]: Analyzing trace with hash -932565549, now seen corresponding path program 1 times [2022-07-12 19:26:19,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 19:26:19,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427401801] [2022-07-12 19:26:19,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 19:26:19,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 19:26:19,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 19:26:19,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-12 19:26:19,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 19:26:19,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 19:26:19,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 19:26:19,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427401801] [2022-07-12 19:26:19,337 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427401801] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 19:26:19,337 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 19:26:19,337 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 19:26:19,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799123218] [2022-07-12 19:26:19,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 19:26:19,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 19:26:19,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 19:26:19,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 19:26:19,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-12 19:26:19,339 INFO L87 Difference]: Start difference. First operand 145 states and 199 transitions. Second operand has 7 states, 7 states have (on average 5.0) internal successors, (35), 6 states have internal predecessors, (35), 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) [2022-07-12 19:26:19,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 19:26:19,481 INFO L93 Difference]: Finished difference Result 157 states and 212 transitions. [2022-07-12 19:26:19,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-12 19:26:19,482 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.0) internal successors, (35), 6 states have internal predecessors, (35), 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 38 [2022-07-12 19:26:19,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 19:26:19,483 INFO L225 Difference]: With dead ends: 157 [2022-07-12 19:26:19,483 INFO L226 Difference]: Without dead ends: 157 [2022-07-12 19:26:19,484 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2022-07-12 19:26:19,484 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 196 mSDsluCounter, 437 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 585 SdHoareTripleChecker+Invalid, 221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 19:26:19,485 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [197 Valid, 585 Invalid, 221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 19:26:19,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2022-07-12 19:26:19,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 145. [2022-07-12 19:26:19,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 133 states have (on average 1.3759398496240602) internal successors, (183), 133 states have internal predecessors, (183), 7 states have call successors, (7), 3 states have call predecessors, (7), 4 states have return successors, (8), 8 states have call predecessors, (8), 4 states have call successors, (8) [2022-07-12 19:26:19,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 198 transitions. [2022-07-12 19:26:19,489 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 198 transitions. Word has length 38 [2022-07-12 19:26:19,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 19:26:19,490 INFO L495 AbstractCegarLoop]: Abstraction has 145 states and 198 transitions. [2022-07-12 19:26:19,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.0) internal successors, (35), 6 states have internal predecessors, (35), 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) [2022-07-12 19:26:19,491 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 198 transitions. [2022-07-12 19:26:19,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-07-12 19:26:19,492 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 19:26:19,492 INFO L195 NwaCegarLoop]: 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] [2022-07-12 19:26:19,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-12 19:26:19,492 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-12 19:26:19,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 19:26:19,493 INFO L85 PathProgramCache]: Analyzing trace with hash -602315620, now seen corresponding path program 1 times [2022-07-12 19:26:19,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 19:26:19,493 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850913615] [2022-07-12 19:26:19,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 19:26:19,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 19:26:19,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 19:26:19,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-12 19:26:19,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 19:26:19,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 19:26:19,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 19:26:19,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850913615] [2022-07-12 19:26:19,547 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850913615] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 19:26:19,547 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 19:26:19,547 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 19:26:19,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367412163] [2022-07-12 19:26:19,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 19:26:19,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 19:26:19,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 19:26:19,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 19:26:19,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 19:26:19,550 INFO L87 Difference]: Start difference. First operand 145 states and 198 transitions. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 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) [2022-07-12 19:26:19,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 19:26:19,594 INFO L93 Difference]: Finished difference Result 155 states and 211 transitions. [2022-07-12 19:26:19,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 19:26:19,594 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 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 39 [2022-07-12 19:26:19,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 19:26:19,595 INFO L225 Difference]: With dead ends: 155 [2022-07-12 19:26:19,598 INFO L226 Difference]: Without dead ends: 155 [2022-07-12 19:26:19,598 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-12 19:26:19,599 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 21 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 376 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 19:26:19,599 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 376 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 19:26:19,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2022-07-12 19:26:19,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 151. [2022-07-12 19:26:19,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 139 states have (on average 1.3669064748201438) internal successors, (190), 139 states have internal predecessors, (190), 7 states have call successors, (7), 3 states have call predecessors, (7), 4 states have return successors, (8), 8 states have call predecessors, (8), 4 states have call successors, (8) [2022-07-12 19:26:19,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 205 transitions. [2022-07-12 19:26:19,602 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 205 transitions. Word has length 39 [2022-07-12 19:26:19,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 19:26:19,602 INFO L495 AbstractCegarLoop]: Abstraction has 151 states and 205 transitions. [2022-07-12 19:26:19,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 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) [2022-07-12 19:26:19,603 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 205 transitions. [2022-07-12 19:26:19,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-07-12 19:26:19,603 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 19:26:19,603 INFO L195 NwaCegarLoop]: 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] [2022-07-12 19:26:19,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-12 19:26:19,603 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-12 19:26:19,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 19:26:19,604 INFO L85 PathProgramCache]: Analyzing trace with hash 98748958, now seen corresponding path program 1 times [2022-07-12 19:26:19,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 19:26:19,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398726096] [2022-07-12 19:26:19,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 19:26:19,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 19:26:19,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 19:26:19,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-12 19:26:19,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 19:26:19,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 19:26:19,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 19:26:19,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398726096] [2022-07-12 19:26:19,659 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398726096] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 19:26:19,659 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 19:26:19,659 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 19:26:19,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215782730] [2022-07-12 19:26:19,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 19:26:19,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 19:26:19,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 19:26:19,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 19:26:19,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 19:26:19,660 INFO L87 Difference]: Start difference. First operand 151 states and 205 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 5 states have internal predecessors, (36), 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) [2022-07-12 19:26:19,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 19:26:19,755 INFO L93 Difference]: Finished difference Result 187 states and 254 transitions. [2022-07-12 19:26:19,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-12 19:26:19,755 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 5 states have internal predecessors, (36), 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 39 [2022-07-12 19:26:19,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 19:26:19,756 INFO L225 Difference]: With dead ends: 187 [2022-07-12 19:26:19,756 INFO L226 Difference]: Without dead ends: 187 [2022-07-12 19:26:19,757 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-07-12 19:26:19,757 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 46 mSDsluCounter, 700 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 856 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 19:26:19,757 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 856 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 19:26:19,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2022-07-12 19:26:19,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 156. [2022-07-12 19:26:19,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 143 states have (on average 1.3566433566433567) internal successors, (194), 143 states have internal predecessors, (194), 7 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (9), 9 states have call predecessors, (9), 4 states have call successors, (9) [2022-07-12 19:26:19,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 210 transitions. [2022-07-12 19:26:19,763 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 210 transitions. Word has length 39 [2022-07-12 19:26:19,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 19:26:19,763 INFO L495 AbstractCegarLoop]: Abstraction has 156 states and 210 transitions. [2022-07-12 19:26:19,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 5 states have internal predecessors, (36), 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) [2022-07-12 19:26:19,764 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 210 transitions. [2022-07-12 19:26:19,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-07-12 19:26:19,764 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 19:26:19,764 INFO L195 NwaCegarLoop]: 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] [2022-07-12 19:26:19,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-12 19:26:19,765 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-12 19:26:19,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 19:26:19,765 INFO L85 PathProgramCache]: Analyzing trace with hash 1386808436, now seen corresponding path program 1 times [2022-07-12 19:26:19,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 19:26:19,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749696208] [2022-07-12 19:26:19,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 19:26:19,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 19:26:19,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 19:26:19,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-12 19:26:19,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 19:26:19,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 19:26:19,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 19:26:19,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749696208] [2022-07-12 19:26:19,801 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749696208] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 19:26:19,801 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 19:26:19,801 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 19:26:19,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107633750] [2022-07-12 19:26:19,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 19:26:19,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 19:26:19,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 19:26:19,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 19:26:19,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 19:26:19,802 INFO L87 Difference]: Start difference. First operand 156 states and 210 transitions. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 3 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) [2022-07-12 19:26:19,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 19:26:19,857 INFO L93 Difference]: Finished difference Result 175 states and 231 transitions. [2022-07-12 19:26:19,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 19:26:19,857 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 3 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 [2022-07-12 19:26:19,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 19:26:19,858 INFO L225 Difference]: With dead ends: 175 [2022-07-12 19:26:19,858 INFO L226 Difference]: Without dead ends: 174 [2022-07-12 19:26:19,859 INFO L412 NwaCegarLoop]: 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 [2022-07-12 19:26:19,859 INFO L413 NwaCegarLoop]: 168 mSDtfsCounter, 51 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 404 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 19:26:19,859 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 404 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 19:26:19,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2022-07-12 19:26:19,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 161. [2022-07-12 19:26:19,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 147 states have (on average 1.3265306122448979) internal successors, (195), 145 states have internal predecessors, (195), 7 states have call successors, (7), 3 states have call predecessors, (7), 6 states have return successors, (12), 12 states have call predecessors, (12), 4 states have call successors, (12) [2022-07-12 19:26:19,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 214 transitions. [2022-07-12 19:26:19,864 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 214 transitions. Word has length 40 [2022-07-12 19:26:19,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 19:26:19,865 INFO L495 AbstractCegarLoop]: Abstraction has 161 states and 214 transitions. [2022-07-12 19:26:19,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 3 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) [2022-07-12 19:26:19,865 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 214 transitions. [2022-07-12 19:26:19,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-07-12 19:26:19,866 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 19:26:19,866 INFO L195 NwaCegarLoop]: 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] [2022-07-12 19:26:19,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-12 19:26:19,866 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-12 19:26:19,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 19:26:19,866 INFO L85 PathProgramCache]: Analyzing trace with hash -1694405227, now seen corresponding path program 1 times [2022-07-12 19:26:19,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 19:26:19,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225204215] [2022-07-12 19:26:19,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 19:26:19,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 19:26:19,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 19:26:19,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-12 19:26:19,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 19:26:19,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 19:26:19,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 19:26:19,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225204215] [2022-07-12 19:26:19,930 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225204215] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 19:26:19,930 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 19:26:19,930 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 19:26:19,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719610230] [2022-07-12 19:26:19,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 19:26:19,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 19:26:19,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 19:26:19,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 19:26:19,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 19:26:19,931 INFO L87 Difference]: Start difference. First operand 161 states and 214 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, (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) [2022-07-12 19:26:20,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 19:26:20,014 INFO L93 Difference]: Finished difference Result 187 states and 248 transitions. [2022-07-12 19:26:20,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-12 19:26:20,015 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, (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 [2022-07-12 19:26:20,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 19:26:20,016 INFO L225 Difference]: With dead ends: 187 [2022-07-12 19:26:20,016 INFO L226 Difference]: Without dead ends: 187 [2022-07-12 19:26:20,016 INFO L412 NwaCegarLoop]: 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 [2022-07-12 19:26:20,016 INFO L413 NwaCegarLoop]: 168 mSDtfsCounter, 57 mSDsluCounter, 726 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 894 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 19:26:20,016 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 894 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 19:26:20,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2022-07-12 19:26:20,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 162. [2022-07-12 19:26:20,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 148 states have (on average 1.3175675675675675) internal successors, (195), 146 states have internal predecessors, (195), 7 states have call successors, (7), 3 states have call predecessors, (7), 6 states have return successors, (12), 12 states have call predecessors, (12), 4 states have call successors, (12) [2022-07-12 19:26:20,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 214 transitions. [2022-07-12 19:26:20,021 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 214 transitions. Word has length 40 [2022-07-12 19:26:20,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 19:26:20,021 INFO L495 AbstractCegarLoop]: Abstraction has 162 states and 214 transitions. [2022-07-12 19:26:20,021 INFO L496 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, (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) [2022-07-12 19:26:20,021 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 214 transitions. [2022-07-12 19:26:20,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-07-12 19:26:20,022 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 19:26:20,022 INFO L195 NwaCegarLoop]: 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] [2022-07-12 19:26:20,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-12 19:26:20,022 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-12 19:26:20,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 19:26:20,022 INFO L85 PathProgramCache]: Analyzing trace with hash 2087873014, now seen corresponding path program 1 times [2022-07-12 19:26:20,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 19:26:20,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716596162] [2022-07-12 19:26:20,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 19:26:20,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 19:26:20,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 19:26:20,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-12 19:26:20,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 19:26:20,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 19:26:20,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 19:26:20,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716596162] [2022-07-12 19:26:20,053 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716596162] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 19:26:20,053 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 19:26:20,054 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 19:26:20,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830099543] [2022-07-12 19:26:20,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 19:26:20,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 19:26:20,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 19:26:20,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 19:26:20,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 19:26:20,055 INFO L87 Difference]: Start difference. First operand 162 states and 214 transitions. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 3 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) [2022-07-12 19:26:20,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 19:26:20,103 INFO L93 Difference]: Finished difference Result 158 states and 206 transitions. [2022-07-12 19:26:20,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 19:26:20,104 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 3 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 [2022-07-12 19:26:20,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 19:26:20,105 INFO L225 Difference]: With dead ends: 158 [2022-07-12 19:26:20,105 INFO L226 Difference]: Without dead ends: 158 [2022-07-12 19:26:20,106 INFO L412 NwaCegarLoop]: 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 [2022-07-12 19:26:20,107 INFO L413 NwaCegarLoop]: 144 mSDtfsCounter, 18 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 388 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 19:26:20,107 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 388 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 19:26:20,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2022-07-12 19:26:20,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 154. [2022-07-12 19:26:20,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 141 states have (on average 1.2907801418439717) internal successors, (182), 139 states have internal predecessors, (182), 7 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (11), 11 states have call predecessors, (11), 4 states have call successors, (11) [2022-07-12 19:26:20,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 200 transitions. [2022-07-12 19:26:20,112 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 200 transitions. Word has length 40 [2022-07-12 19:26:20,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 19:26:20,112 INFO L495 AbstractCegarLoop]: Abstraction has 154 states and 200 transitions. [2022-07-12 19:26:20,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 3 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) [2022-07-12 19:26:20,112 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 200 transitions. [2022-07-12 19:26:20,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-07-12 19:26:20,112 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 19:26:20,113 INFO L195 NwaCegarLoop]: 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] [2022-07-12 19:26:20,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-12 19:26:20,113 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-12 19:26:20,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 19:26:20,113 INFO L85 PathProgramCache]: Analyzing trace with hash -2108481298, now seen corresponding path program 1 times [2022-07-12 19:26:20,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 19:26:20,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129580195] [2022-07-12 19:26:20,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 19:26:20,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 19:26:20,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 19:26:20,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-12 19:26:20,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 19:26:20,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 19:26:20,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 19:26:20,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129580195] [2022-07-12 19:26:20,171 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129580195] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 19:26:20,171 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 19:26:20,171 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 19:26:20,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697916423] [2022-07-12 19:26:20,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 19:26:20,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 19:26:20,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 19:26:20,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 19:26:20,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-07-12 19:26:20,172 INFO L87 Difference]: Start difference. First operand 154 states and 200 transitions. Second operand has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 5 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) [2022-07-12 19:26:20,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 19:26:20,218 INFO L93 Difference]: Finished difference Result 149 states and 191 transitions. [2022-07-12 19:26:20,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 19:26:20,219 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 5 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 [2022-07-12 19:26:20,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 19:26:20,219 INFO L225 Difference]: With dead ends: 149 [2022-07-12 19:26:20,219 INFO L226 Difference]: Without dead ends: 47 [2022-07-12 19:26:20,220 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-12 19:26:20,221 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 246 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 250 SdHoareTripleChecker+Valid, 241 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 19:26:20,221 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [250 Valid, 241 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 19:26:20,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2022-07-12 19:26:20,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2022-07-12 19:26:20,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 42 states have (on average 1.0714285714285714) internal successors, (45), 43 states have internal predecessors, (45), 3 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) [2022-07-12 19:26:20,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 49 transitions. [2022-07-12 19:26:20,223 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 49 transitions. Word has length 40 [2022-07-12 19:26:20,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 19:26:20,224 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 49 transitions. [2022-07-12 19:26:20,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 5 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) [2022-07-12 19:26:20,224 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 49 transitions. [2022-07-12 19:26:20,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-07-12 19:26:20,224 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 19:26:20,224 INFO L195 NwaCegarLoop]: 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] [2022-07-12 19:26:20,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-12 19:26:20,225 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-12 19:26:20,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 19:26:20,225 INFO L85 PathProgramCache]: Analyzing trace with hash -196275269, now seen corresponding path program 1 times [2022-07-12 19:26:20,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 19:26:20,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395413794] [2022-07-12 19:26:20,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 19:26:20,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 19:26:20,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 19:26:20,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-12 19:26:20,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 19:26:20,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 19:26:20,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 19:26:20,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395413794] [2022-07-12 19:26:20,255 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395413794] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 19:26:20,255 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 19:26:20,255 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 19:26:20,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690322936] [2022-07-12 19:26:20,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 19:26:20,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 19:26:20,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 19:26:20,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 19:26:20,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 19:26:20,257 INFO L87 Difference]: Start difference. First operand 47 states and 49 transitions. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 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) [2022-07-12 19:26:20,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 19:26:20,272 INFO L93 Difference]: Finished difference Result 44 states and 45 transitions. [2022-07-12 19:26:20,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 19:26:20,272 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 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 [2022-07-12 19:26:20,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 19:26:20,273 INFO L225 Difference]: With dead ends: 44 [2022-07-12 19:26:20,273 INFO L226 Difference]: Without dead ends: 42 [2022-07-12 19:26:20,273 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-12 19:26:20,274 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 10 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 19:26:20,274 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 88 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 19:26:20,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2022-07-12 19:26:20,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2022-07-12 19:26:20,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 38 states have (on average 1.0526315789473684) internal successors, (40), 38 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) [2022-07-12 19:26:20,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 43 transitions. [2022-07-12 19:26:20,275 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 43 transitions. Word has length 41 [2022-07-12 19:26:20,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 19:26:20,276 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 43 transitions. [2022-07-12 19:26:20,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 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) [2022-07-12 19:26:20,276 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 43 transitions. [2022-07-12 19:26:20,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-07-12 19:26:20,276 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 19:26:20,276 INFO L195 NwaCegarLoop]: 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] [2022-07-12 19:26:20,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-12 19:26:20,276 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-12 19:26:20,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 19:26:20,277 INFO L85 PathProgramCache]: Analyzing trace with hash -1222794270, now seen corresponding path program 1 times [2022-07-12 19:26:20,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 19:26:20,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302351887] [2022-07-12 19:26:20,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 19:26:20,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 19:26:20,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 19:26:20,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-12 19:26:20,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 19:26:20,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 19:26:20,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 19:26:20,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302351887] [2022-07-12 19:26:20,308 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302351887] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 19:26:20,308 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 19:26:20,308 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 19:26:20,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310777218] [2022-07-12 19:26:20,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 19:26:20,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 19:26:20,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 19:26:20,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 19:26:20,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 19:26:20,310 INFO L87 Difference]: Start difference. First operand 42 states and 43 transitions. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 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) [2022-07-12 19:26:20,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 19:26:20,328 INFO L93 Difference]: Finished difference Result 75 states and 76 transitions. [2022-07-12 19:26:20,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 19:26:20,328 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 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 [2022-07-12 19:26:20,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 19:26:20,329 INFO L225 Difference]: With dead ends: 75 [2022-07-12 19:26:20,329 INFO L226 Difference]: Without dead ends: 75 [2022-07-12 19:26:20,329 INFO L412 NwaCegarLoop]: 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 [2022-07-12 19:26:20,330 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 20 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 19:26:20,330 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 106 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 19:26:20,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2022-07-12 19:26:20,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 74. [2022-07-12 19:26:20,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 68 states have (on average 1.0294117647058822) internal successors, (70), 68 states have internal predecessors, (70), 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) [2022-07-12 19:26:20,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 75 transitions. [2022-07-12 19:26:20,332 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 75 transitions. Word has length 41 [2022-07-12 19:26:20,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 19:26:20,332 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 75 transitions. [2022-07-12 19:26:20,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 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) [2022-07-12 19:26:20,332 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 75 transitions. [2022-07-12 19:26:20,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-07-12 19:26:20,332 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 19:26:20,333 INFO L195 NwaCegarLoop]: 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] [2022-07-12 19:26:20,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-12 19:26:20,333 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-12 19:26:20,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 19:26:20,333 INFO L85 PathProgramCache]: Analyzing trace with hash -1220947228, now seen corresponding path program 1 times [2022-07-12 19:26:20,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 19:26:20,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570820924] [2022-07-12 19:26:20,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 19:26:20,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 19:26:20,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 19:26:20,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-12 19:26:20,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 19:26:20,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 19:26:20,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 19:26:20,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570820924] [2022-07-12 19:26:20,405 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570820924] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 19:26:20,405 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 19:26:20,405 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 19:26:20,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857017340] [2022-07-12 19:26:20,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 19:26:20,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 19:26:20,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 19:26:20,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 19:26:20,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 19:26:20,406 INFO L87 Difference]: Start difference. First operand 74 states and 75 transitions. Second operand has 7 states, 7 states have (on average 5.428571428571429) 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) [2022-07-12 19:26:20,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 19:26:20,426 INFO L93 Difference]: Finished difference Result 65 states and 64 transitions. [2022-07-12 19:26:20,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 19:26:20,426 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.428571428571429) 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 [2022-07-12 19:26:20,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 19:26:20,426 INFO L225 Difference]: With dead ends: 65 [2022-07-12 19:26:20,426 INFO L226 Difference]: Without dead ends: 0 [2022-07-12 19:26:20,426 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-07-12 19:26:20,427 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 3 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 19:26:20,427 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 171 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 19:26:20,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-07-12 19:26:20,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-07-12 19:26:20,427 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) [2022-07-12 19:26:20,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-07-12 19:26:20,427 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 41 [2022-07-12 19:26:20,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 19:26:20,427 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-12 19:26:20,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.428571428571429) 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) [2022-07-12 19:26:20,428 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-07-12 19:26:20,428 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-07-12 19:26:20,429 INFO L805 garLoopResultBuilder]: Registering result SAFE for location errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK (1 of 2 remaining) [2022-07-12 19:26:20,430 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (0 of 2 remaining) [2022-07-12 19:26:20,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-12 19:26:20,432 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 19:26:20,433 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-12 19:26:20,437 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.07 07:26:20 BoogieIcfgContainer [2022-07-12 19:26:20,438 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-12 19:26:20,438 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-12 19:26:20,438 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-12 19:26:20,439 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-12 19:26:20,439 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 07:26:17" (3/4) ... [2022-07-12 19:26:20,441 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-07-12 19:26:20,445 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure errorFn [2022-07-12 19:26:20,446 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure IofCallDriver [2022-07-12 19:26:20,457 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 26 nodes and edges [2022-07-12 19:26:20,457 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2022-07-12 19:26:20,458 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-07-12 19:26:20,458 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-07-12 19:26:20,518 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-12 19:26:20,518 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-12 19:26:20,518 INFO L158 Benchmark]: Toolchain (without parser) took 3586.52ms. Allocated memory was 98.6MB in the beginning and 119.5MB in the end (delta: 21.0MB). Free memory was 58.6MB in the beginning and 35.0MB in the end (delta: 23.5MB). Peak memory consumption was 43.6MB. Max. memory is 16.1GB. [2022-07-12 19:26:20,519 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 98.6MB. Free memory is still 75.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-12 19:26:20,519 INFO L158 Benchmark]: CACSL2BoogieTranslator took 259.77ms. Allocated memory is still 98.6MB. Free memory was 58.4MB in the beginning and 68.9MB in the end (delta: -10.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-12 19:26:20,519 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.39ms. Allocated memory is still 98.6MB. Free memory was 68.9MB in the beginning and 66.1MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-12 19:26:20,519 INFO L158 Benchmark]: Boogie Preprocessor took 21.70ms. Allocated memory is still 98.6MB. Free memory was 66.1MB in the beginning and 64.3MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-12 19:26:20,519 INFO L158 Benchmark]: RCFGBuilder took 538.06ms. Allocated memory is still 98.6MB. Free memory was 64.3MB in the beginning and 40.5MB in the end (delta: 23.8MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2022-07-12 19:26:20,520 INFO L158 Benchmark]: TraceAbstraction took 2639.87ms. Allocated memory was 98.6MB in the beginning and 119.5MB in the end (delta: 21.0MB). Free memory was 40.0MB in the beginning and 42.4MB in the end (delta: -2.4MB). Peak memory consumption was 20.5MB. Max. memory is 16.1GB. [2022-07-12 19:26:20,520 INFO L158 Benchmark]: Witness Printer took 79.69ms. Allocated memory is still 119.5MB. Free memory was 42.4MB in the beginning and 35.0MB in the end (delta: 7.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-07-12 19:26:20,521 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 98.6MB. Free memory is still 75.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 259.77ms. Allocated memory is still 98.6MB. Free memory was 58.4MB in the beginning and 68.9MB in the end (delta: -10.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 41.39ms. Allocated memory is still 98.6MB. Free memory was 68.9MB in the beginning and 66.1MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 21.70ms. Allocated memory is still 98.6MB. Free memory was 66.1MB in the beginning and 64.3MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 538.06ms. Allocated memory is still 98.6MB. Free memory was 64.3MB in the beginning and 40.5MB in the end (delta: 23.8MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * TraceAbstraction took 2639.87ms. Allocated memory was 98.6MB in the beginning and 119.5MB in the end (delta: 21.0MB). Free memory was 40.0MB in the beginning and 42.4MB in the end (delta: -2.4MB). Peak memory consumption was 20.5MB. Max. memory is 16.1GB. * Witness Printer took 79.69ms. Allocated memory is still 119.5MB. Free memory was 42.4MB in the beginning and 35.0MB in the end (delta: 7.3MB). Peak memory consumption was 6.3MB. 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: 581]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 288]: 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 3 procedures, 122 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 2.6s, OverallIterations: 19, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1741 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1724 mSDsluCounter, 6719 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4075 mSDsCounter, 165 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1122 IncrementalHoareTripleChecker+Invalid, 1287 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 165 mSolverCounterUnsat, 2644 mSDtfsCounter, 1122 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 140 GetRequests, 64 SyntacticMatches, 1 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=162occurred in iteration=14, InterpolantAutomatonStates: 99, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 19 MinimizatonAttempts, 165 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 590 NumberOfCodeBlocks, 590 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 571 ConstructedInterpolants, 0 QuantifiedInterpolants, 1334 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 19 InterpolantComputations, 19 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-07-12 19:26:20,552 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE