./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/ntdrivers-simplified/kbfiltr_simpl2.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version c3fed411 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_simpl2.cil-1.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 bf75d7f1708750397c6bdac14ac08b964b10a95dcecc15b57a02c9969977c6ec --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-18 22:32:14,161 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-18 22:32:14,164 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-18 22:32:14,218 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-18 22:32:14,218 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-18 22:32:14,221 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-18 22:32:14,223 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-18 22:32:14,226 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-18 22:32:14,229 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-18 22:32:14,234 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-18 22:32:14,235 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-18 22:32:14,236 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-18 22:32:14,237 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-18 22:32:14,238 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-18 22:32:14,240 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-18 22:32:14,241 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-18 22:32:14,245 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-18 22:32:14,246 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-18 22:32:14,247 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-18 22:32:14,250 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-18 22:32:14,254 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-18 22:32:14,255 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-18 22:32:14,255 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-18 22:32:14,257 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-18 22:32:14,260 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-18 22:32:14,260 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-18 22:32:14,261 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-18 22:32:14,262 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-18 22:32:14,262 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-18 22:32:14,263 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-18 22:32:14,263 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-18 22:32:14,264 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-18 22:32:14,265 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-18 22:32:14,266 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-18 22:32:14,267 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-18 22:32:14,268 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-18 22:32:14,268 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-18 22:32:14,268 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-18 22:32:14,269 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-18 22:32:14,269 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-18 22:32:14,270 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-18 22:32:14,271 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-12-18 22:32:14,306 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-18 22:32:14,307 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-18 22:32:14,308 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-18 22:32:14,308 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-18 22:32:14,309 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-18 22:32:14,309 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-18 22:32:14,310 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-18 22:32:14,310 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-18 22:32:14,310 INFO L138 SettingsManager]: * Use SBE=true [2021-12-18 22:32:14,310 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-18 22:32:14,311 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-18 22:32:14,311 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-18 22:32:14,311 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-18 22:32:14,311 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-18 22:32:14,312 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-18 22:32:14,312 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-18 22:32:14,312 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-18 22:32:14,312 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-12-18 22:32:14,312 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-18 22:32:14,313 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-18 22:32:14,313 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-18 22:32:14,313 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-18 22:32:14,313 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-18 22:32:14,313 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-18 22:32:14,313 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-18 22:32:14,314 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-18 22:32:14,314 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-18 22:32:14,314 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-18 22:32:14,314 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-18 22:32:14,314 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-18 22:32:14,315 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-18 22:32:14,315 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bf75d7f1708750397c6bdac14ac08b964b10a95dcecc15b57a02c9969977c6ec [2021-12-18 22:32:14,534 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-18 22:32:14,556 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-18 22:32:14,559 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-18 22:32:14,559 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-18 22:32:14,560 INFO L275 PluginConnector]: CDTParser initialized [2021-12-18 22:32:14,561 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ntdrivers-simplified/kbfiltr_simpl2.cil-1.c [2021-12-18 22:32:14,623 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7957d3330/3648cdeaf1424b68b78d736254f5e1d4/FLAG573c5a869 [2021-12-18 22:32:15,013 INFO L306 CDTParser]: Found 1 translation units. [2021-12-18 22:32:15,014 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ntdrivers-simplified/kbfiltr_simpl2.cil-1.c [2021-12-18 22:32:15,023 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7957d3330/3648cdeaf1424b68b78d736254f5e1d4/FLAG573c5a869 [2021-12-18 22:32:15,034 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7957d3330/3648cdeaf1424b68b78d736254f5e1d4 [2021-12-18 22:32:15,036 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-18 22:32:15,037 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-18 22:32:15,038 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-18 22:32:15,038 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-18 22:32:15,044 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-18 22:32:15,045 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 10:32:15" (1/1) ... [2021-12-18 22:32:15,046 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14221207 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:32:15, skipping insertion in model container [2021-12-18 22:32:15,046 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 10:32:15" (1/1) ... [2021-12-18 22:32:15,051 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-18 22:32:15,088 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-18 22:32:15,318 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_simpl2.cil-1.c[29620,29633] [2021-12-18 22:32:15,330 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-18 22:32:15,338 INFO L203 MainTranslator]: Completed pre-run [2021-12-18 22:32:15,422 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_simpl2.cil-1.c[29620,29633] [2021-12-18 22:32:15,430 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-18 22:32:15,444 INFO L208 MainTranslator]: Completed translation [2021-12-18 22:32:15,446 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:32:15 WrapperNode [2021-12-18 22:32:15,446 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-18 22:32:15,447 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-18 22:32:15,447 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-18 22:32:15,448 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-18 22:32:15,454 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:32:15" (1/1) ... [2021-12-18 22:32:15,467 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:32:15" (1/1) ... [2021-12-18 22:32:15,506 INFO L137 Inliner]: procedures = 29, calls = 43, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 662 [2021-12-18 22:32:15,507 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-18 22:32:15,507 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-18 22:32:15,507 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-18 22:32:15,508 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-18 22:32:15,514 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:32:15" (1/1) ... [2021-12-18 22:32:15,515 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:32:15" (1/1) ... [2021-12-18 22:32:15,519 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:32:15" (1/1) ... [2021-12-18 22:32:15,519 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:32:15" (1/1) ... [2021-12-18 22:32:15,529 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:32:15" (1/1) ... [2021-12-18 22:32:15,534 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:32:15" (1/1) ... [2021-12-18 22:32:15,537 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:32:15" (1/1) ... [2021-12-18 22:32:15,542 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-18 22:32:15,543 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-18 22:32:15,543 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-18 22:32:15,543 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-18 22:32:15,549 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:32:15" (1/1) ... [2021-12-18 22:32:15,571 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-18 22:32:15,581 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 22:32:15,591 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-18 22:32:15,592 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-18 22:32:15,630 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-18 22:32:15,630 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_Complete [2021-12-18 22:32:15,630 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_Complete [2021-12-18 22:32:15,630 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2021-12-18 22:32:15,630 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2021-12-18 22:32:15,630 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_CreateClose [2021-12-18 22:32:15,631 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_CreateClose [2021-12-18 22:32:15,631 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2021-12-18 22:32:15,631 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2021-12-18 22:32:15,631 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2021-12-18 22:32:15,631 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2021-12-18 22:32:15,631 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-18 22:32:15,632 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2021-12-18 22:32:15,632 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2021-12-18 22:32:15,632 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-18 22:32:15,632 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-18 22:32:15,632 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_DispatchPassThrough [2021-12-18 22:32:15,632 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_DispatchPassThrough [2021-12-18 22:32:15,801 INFO L236 CfgBuilder]: Building ICFG [2021-12-18 22:32:15,803 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-18 22:32:15,895 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-18 22:32:15,900 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-18 22:32:15,904 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-18 22:32:15,909 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-18 22:32:15,912 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-18 22:32:16,284 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##87: assume !false; [2021-12-18 22:32:16,285 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##86: assume false; [2021-12-18 22:32:16,285 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##63: assume !false; [2021-12-18 22:32:16,285 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##62: assume false; [2021-12-18 22:32:16,285 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##129: assume false; [2021-12-18 22:32:16,285 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##130: assume !false; [2021-12-18 22:32:16,286 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##18: assume false; [2021-12-18 22:32:16,286 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##19: assume !false; [2021-12-18 22:32:16,286 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##113: assume !false; [2021-12-18 22:32:16,286 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##112: assume false; [2021-12-18 22:32:16,303 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-18 22:32:16,336 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2021-12-18 22:32:16,336 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2021-12-18 22:32:16,344 INFO L277 CfgBuilder]: Performing block encoding [2021-12-18 22:32:16,351 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-18 22:32:16,352 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-18 22:32:16,354 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 10:32:16 BoogieIcfgContainer [2021-12-18 22:32:16,354 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-18 22:32:16,360 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-18 22:32:16,360 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-18 22:32:16,363 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-18 22:32:16,363 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.12 10:32:15" (1/3) ... [2021-12-18 22:32:16,364 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21228532 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 10:32:16, skipping insertion in model container [2021-12-18 22:32:16,364 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:32:15" (2/3) ... [2021-12-18 22:32:16,364 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21228532 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 10:32:16, skipping insertion in model container [2021-12-18 22:32:16,364 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 10:32:16" (3/3) ... [2021-12-18 22:32:16,366 INFO L111 eAbstractionObserver]: Analyzing ICFG kbfiltr_simpl2.cil-1.c [2021-12-18 22:32:16,375 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-18 22:32:16,375 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-18 22:32:16,418 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-18 22:32:16,423 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-18 22:32:16,424 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-18 22:32:16,441 INFO L276 IsEmpty]: Start isEmpty. Operand has 209 states, 171 states have (on average 1.6023391812865497) internal successors, (274), 189 states have internal predecessors, (274), 28 states have call successors, (28), 7 states have call predecessors, (28), 7 states have return successors, (28), 27 states have call predecessors, (28), 28 states have call successors, (28) [2021-12-18 22:32:16,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-12-18 22:32:16,447 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 22:32:16,448 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 22:32:16,448 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-18 22:32:16,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 22:32:16,453 INFO L85 PathProgramCache]: Analyzing trace with hash -15799124, now seen corresponding path program 1 times [2021-12-18 22:32:16,461 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 22:32:16,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778280757] [2021-12-18 22:32:16,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 22:32:16,462 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 22:32:16,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 22:32:16,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 22:32:16,670 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 22:32:16,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778280757] [2021-12-18 22:32:16,672 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778280757] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 22:32:16,672 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 22:32:16,672 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-18 22:32:16,674 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201011112] [2021-12-18 22:32:16,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 22:32:16,678 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-18 22:32:16,680 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 22:32:16,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-18 22:32:16,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 22:32:16,715 INFO L87 Difference]: Start difference. First operand has 209 states, 171 states have (on average 1.6023391812865497) internal successors, (274), 189 states have internal predecessors, (274), 28 states have call successors, (28), 7 states have call predecessors, (28), 7 states have return successors, (28), 27 states have call predecessors, (28), 28 states have call successors, (28) Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 22:32:16,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 22:32:16,811 INFO L93 Difference]: Finished difference Result 211 states and 314 transitions. [2021-12-18 22:32:16,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-18 22:32:16,814 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-12-18 22:32:16,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 22:32:16,833 INFO L225 Difference]: With dead ends: 211 [2021-12-18 22:32:16,833 INFO L226 Difference]: Without dead ends: 207 [2021-12-18 22:32:16,835 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 22:32:16,839 INFO L933 BasicCegarLoop]: 309 mSDtfsCounter, 179 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 417 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-18 22:32:16,841 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [190 Valid, 417 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-18 22:32:16,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2021-12-18 22:32:16,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 205. [2021-12-18 22:32:16,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 169 states have (on average 1.5739644970414202) internal successors, (266), 185 states have internal predecessors, (266), 28 states have call successors, (28), 7 states have call predecessors, (28), 6 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2021-12-18 22:32:16,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 309 transitions. [2021-12-18 22:32:16,908 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 309 transitions. Word has length 8 [2021-12-18 22:32:16,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 22:32:16,909 INFO L470 AbstractCegarLoop]: Abstraction has 205 states and 309 transitions. [2021-12-18 22:32:16,909 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 22:32:16,910 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 309 transitions. [2021-12-18 22:32:16,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-12-18 22:32:16,911 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 22:32:16,912 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 22:32:16,912 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-18 22:32:16,912 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-18 22:32:16,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 22:32:16,915 INFO L85 PathProgramCache]: Analyzing trace with hash -191249987, now seen corresponding path program 1 times [2021-12-18 22:32:16,916 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 22:32:16,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426899034] [2021-12-18 22:32:16,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 22:32:16,916 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 22:32:16,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 22:32:16,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 22:32:16,992 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 22:32:16,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426899034] [2021-12-18 22:32:16,992 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426899034] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 22:32:16,992 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 22:32:16,993 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-18 22:32:16,993 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546449823] [2021-12-18 22:32:16,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 22:32:16,995 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-18 22:32:16,995 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 22:32:16,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-18 22:32:16,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 22:32:16,996 INFO L87 Difference]: Start difference. First operand 205 states and 309 transitions. Second operand has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 22:32:17,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 22:32:17,031 INFO L93 Difference]: Finished difference Result 204 states and 308 transitions. [2021-12-18 22:32:17,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-18 22:32:17,031 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 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 15 [2021-12-18 22:32:17,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 22:32:17,033 INFO L225 Difference]: With dead ends: 204 [2021-12-18 22:32:17,033 INFO L226 Difference]: Without dead ends: 198 [2021-12-18 22:32:17,033 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 22:32:17,034 INFO L933 BasicCegarLoop]: 308 mSDtfsCounter, 199 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 372 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-18 22:32:17,035 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [210 Valid, 372 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-18 22:32:17,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2021-12-18 22:32:17,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 198. [2021-12-18 22:32:17,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 163 states have (on average 1.5276073619631902) internal successors, (249), 178 states have internal predecessors, (249), 28 states have call successors, (28), 7 states have call predecessors, (28), 6 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2021-12-18 22:32:17,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 292 transitions. [2021-12-18 22:32:17,045 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 292 transitions. Word has length 15 [2021-12-18 22:32:17,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 22:32:17,045 INFO L470 AbstractCegarLoop]: Abstraction has 198 states and 292 transitions. [2021-12-18 22:32:17,045 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 22:32:17,046 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 292 transitions. [2021-12-18 22:32:17,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-12-18 22:32:17,046 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 22:32:17,046 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 22:32:17,047 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-18 22:32:17,047 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-18 22:32:17,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 22:32:17,048 INFO L85 PathProgramCache]: Analyzing trace with hash 705160586, now seen corresponding path program 1 times [2021-12-18 22:32:17,048 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 22:32:17,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106639651] [2021-12-18 22:32:17,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 22:32:17,048 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 22:32:17,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 22:32:17,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 22:32:17,136 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 22:32:17,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106639651] [2021-12-18 22:32:17,137 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106639651] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 22:32:17,137 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 22:32:17,137 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-18 22:32:17,137 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727174931] [2021-12-18 22:32:17,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 22:32:17,138 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-18 22:32:17,138 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 22:32:17,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-18 22:32:17,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 22:32:17,139 INFO L87 Difference]: Start difference. First operand 198 states and 292 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 22:32:17,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 22:32:17,272 INFO L93 Difference]: Finished difference Result 263 states and 373 transitions. [2021-12-18 22:32:17,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-18 22:32:17,273 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-12-18 22:32:17,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 22:32:17,275 INFO L225 Difference]: With dead ends: 263 [2021-12-18 22:32:17,275 INFO L226 Difference]: Without dead ends: 262 [2021-12-18 22:32:17,275 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 22:32:17,276 INFO L933 BasicCegarLoop]: 322 mSDtfsCounter, 201 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 428 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-18 22:32:17,276 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [201 Valid, 428 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-18 22:32:17,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2021-12-18 22:32:17,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 249. [2021-12-18 22:32:17,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 213 states have (on average 1.431924882629108) internal successors, (305), 215 states have internal predecessors, (305), 25 states have call successors, (25), 11 states have call predecessors, (25), 10 states have return successors, (27), 25 states have call predecessors, (27), 18 states have call successors, (27) [2021-12-18 22:32:17,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 357 transitions. [2021-12-18 22:32:17,292 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 357 transitions. Word has length 19 [2021-12-18 22:32:17,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 22:32:17,292 INFO L470 AbstractCegarLoop]: Abstraction has 249 states and 357 transitions. [2021-12-18 22:32:17,293 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 22:32:17,293 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 357 transitions. [2021-12-18 22:32:17,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-12-18 22:32:17,294 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 22:32:17,294 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 22:32:17,294 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-18 22:32:17,294 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-18 22:32:17,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 22:32:17,295 INFO L85 PathProgramCache]: Analyzing trace with hash -2016043499, now seen corresponding path program 1 times [2021-12-18 22:32:17,295 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 22:32:17,295 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360992588] [2021-12-18 22:32:17,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 22:32:17,295 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 22:32:17,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 22:32:17,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 22:32:17,366 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 22:32:17,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360992588] [2021-12-18 22:32:17,367 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360992588] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 22:32:17,367 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 22:32:17,367 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-18 22:32:17,367 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596238748] [2021-12-18 22:32:17,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 22:32:17,368 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-18 22:32:17,368 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 22:32:17,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-18 22:32:17,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 22:32:17,369 INFO L87 Difference]: Start difference. First operand 249 states and 357 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 22:32:17,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 22:32:17,390 INFO L93 Difference]: Finished difference Result 306 states and 428 transitions. [2021-12-18 22:32:17,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-18 22:32:17,390 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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 18 [2021-12-18 22:32:17,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 22:32:17,392 INFO L225 Difference]: With dead ends: 306 [2021-12-18 22:32:17,392 INFO L226 Difference]: Without dead ends: 306 [2021-12-18 22:32:17,393 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 22:32:17,394 INFO L933 BasicCegarLoop]: 268 mSDtfsCounter, 238 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 238 SdHoareTripleChecker+Valid, 352 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-18 22:32:17,394 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [238 Valid, 352 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-18 22:32:17,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2021-12-18 22:32:17,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 287. [2021-12-18 22:32:17,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 253 states have (on average 1.4189723320158103) internal successors, (359), 253 states have internal predecessors, (359), 21 states have call successors, (21), 11 states have call predecessors, (21), 12 states have return successors, (26), 23 states have call predecessors, (26), 16 states have call successors, (26) [2021-12-18 22:32:17,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 406 transitions. [2021-12-18 22:32:17,408 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 406 transitions. Word has length 18 [2021-12-18 22:32:17,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 22:32:17,409 INFO L470 AbstractCegarLoop]: Abstraction has 287 states and 406 transitions. [2021-12-18 22:32:17,410 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 22:32:17,410 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 406 transitions. [2021-12-18 22:32:17,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-12-18 22:32:17,411 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 22:32:17,411 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 22:32:17,412 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-18 22:32:17,412 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-18 22:32:17,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 22:32:17,412 INFO L85 PathProgramCache]: Analyzing trace with hash 1374657914, now seen corresponding path program 1 times [2021-12-18 22:32:17,412 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 22:32:17,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544213028] [2021-12-18 22:32:17,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 22:32:17,413 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 22:32:17,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 22:32:17,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 22:32:17,476 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 22:32:17,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544213028] [2021-12-18 22:32:17,476 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544213028] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 22:32:17,476 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 22:32:17,477 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-18 22:32:17,477 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135074268] [2021-12-18 22:32:17,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 22:32:17,477 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-18 22:32:17,477 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 22:32:17,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-18 22:32:17,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 22:32:17,478 INFO L87 Difference]: Start difference. First operand 287 states and 406 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 3 states have call successors, (4), 3 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 22:32:17,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 22:32:17,554 INFO L93 Difference]: Finished difference Result 286 states and 403 transitions. [2021-12-18 22:32:17,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-18 22:32:17,555 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), 3 states have call successors, (4), 3 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-12-18 22:32:17,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 22:32:17,560 INFO L225 Difference]: With dead ends: 286 [2021-12-18 22:32:17,560 INFO L226 Difference]: Without dead ends: 286 [2021-12-18 22:32:17,561 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 22:32:17,565 INFO L933 BasicCegarLoop]: 267 mSDtfsCounter, 25 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 469 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-18 22:32:17,568 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 469 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-18 22:32:17,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2021-12-18 22:32:17,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 286. [2021-12-18 22:32:17,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286 states, 253 states have (on average 1.4110671936758894) internal successors, (357), 252 states have internal predecessors, (357), 20 states have call successors, (20), 11 states have call predecessors, (20), 12 states have return successors, (26), 23 states have call predecessors, (26), 16 states have call successors, (26) [2021-12-18 22:32:17,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 403 transitions. [2021-12-18 22:32:17,588 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 403 transitions. Word has length 29 [2021-12-18 22:32:17,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 22:32:17,588 INFO L470 AbstractCegarLoop]: Abstraction has 286 states and 403 transitions. [2021-12-18 22:32:17,589 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 3 states have call successors, (4), 3 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 22:32:17,589 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 403 transitions. [2021-12-18 22:32:17,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-12-18 22:32:17,596 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 22:32:17,597 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 22:32:17,597 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-18 22:32:17,597 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-18 22:32:17,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 22:32:17,599 INFO L85 PathProgramCache]: Analyzing trace with hash -889185583, now seen corresponding path program 1 times [2021-12-18 22:32:17,599 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 22:32:17,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316080631] [2021-12-18 22:32:17,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 22:32:17,599 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 22:32:17,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 22:32:17,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-18 22:32:17,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 22:32:17,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 22:32:17,752 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 22:32:17,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316080631] [2021-12-18 22:32:17,752 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316080631] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 22:32:17,752 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 22:32:17,752 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-18 22:32:17,753 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32149840] [2021-12-18 22:32:17,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 22:32:17,753 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-18 22:32:17,753 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 22:32:17,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-18 22:32:17,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-18 22:32:17,755 INFO L87 Difference]: Start difference. First operand 286 states and 403 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) [2021-12-18 22:32:17,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 22:32:17,919 INFO L93 Difference]: Finished difference Result 303 states and 422 transitions. [2021-12-18 22:32:17,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-18 22:32:17,919 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 [2021-12-18 22:32:17,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 22:32:17,921 INFO L225 Difference]: With dead ends: 303 [2021-12-18 22:32:17,922 INFO L226 Difference]: Without dead ends: 303 [2021-12-18 22:32:17,922 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-12-18 22:32:17,924 INFO L933 BasicCegarLoop]: 251 mSDtfsCounter, 331 mSDsluCounter, 373 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 333 SdHoareTripleChecker+Valid, 624 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-18 22:32:17,924 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [333 Valid, 624 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-18 22:32:17,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2021-12-18 22:32:17,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 296. [2021-12-18 22:32:17,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 263 states have (on average 1.403041825095057) internal successors, (369), 261 states have internal predecessors, (369), 20 states have call successors, (20), 11 states have call predecessors, (20), 12 states have return successors, (26), 23 states have call predecessors, (26), 16 states have call successors, (26) [2021-12-18 22:32:17,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 415 transitions. [2021-12-18 22:32:17,933 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 415 transitions. Word has length 33 [2021-12-18 22:32:17,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 22:32:17,934 INFO L470 AbstractCegarLoop]: Abstraction has 296 states and 415 transitions. [2021-12-18 22:32:17,934 INFO L471 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) [2021-12-18 22:32:17,934 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 415 transitions. [2021-12-18 22:32:17,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-12-18 22:32:17,936 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 22:32:17,936 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 22:32:17,936 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-18 22:32:17,936 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-18 22:32:17,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 22:32:17,937 INFO L85 PathProgramCache]: Analyzing trace with hash 2121154083, now seen corresponding path program 1 times [2021-12-18 22:32:17,937 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 22:32:17,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188651222] [2021-12-18 22:32:17,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 22:32:17,938 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 22:32:17,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 22:32:17,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-18 22:32:17,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 22:32:18,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 22:32:18,025 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 22:32:18,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188651222] [2021-12-18 22:32:18,026 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188651222] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 22:32:18,026 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 22:32:18,026 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-18 22:32:18,026 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199638396] [2021-12-18 22:32:18,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 22:32:18,027 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-18 22:32:18,027 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 22:32:18,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-18 22:32:18,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-18 22:32:18,028 INFO L87 Difference]: Start difference. First operand 296 states and 415 transitions. Second operand has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 5 states have internal predecessors, (31), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-18 22:32:18,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 22:32:18,233 INFO L93 Difference]: Finished difference Result 303 states and 421 transitions. [2021-12-18 22:32:18,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-18 22:32:18,233 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 5 states have internal predecessors, (31), 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 34 [2021-12-18 22:32:18,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 22:32:18,235 INFO L225 Difference]: With dead ends: 303 [2021-12-18 22:32:18,235 INFO L226 Difference]: Without dead ends: 303 [2021-12-18 22:32:18,236 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-12-18 22:32:18,236 INFO L933 BasicCegarLoop]: 252 mSDtfsCounter, 316 mSDsluCounter, 561 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 318 SdHoareTripleChecker+Valid, 813 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-18 22:32:18,237 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [318 Valid, 813 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-18 22:32:18,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2021-12-18 22:32:18,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 297. [2021-12-18 22:32:18,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 264 states have (on average 1.4015151515151516) internal successors, (370), 262 states have internal predecessors, (370), 20 states have call successors, (20), 11 states have call predecessors, (20), 12 states have return successors, (26), 23 states have call predecessors, (26), 16 states have call successors, (26) [2021-12-18 22:32:18,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 416 transitions. [2021-12-18 22:32:18,247 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 416 transitions. Word has length 34 [2021-12-18 22:32:18,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 22:32:18,247 INFO L470 AbstractCegarLoop]: Abstraction has 297 states and 416 transitions. [2021-12-18 22:32:18,248 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 5 states have internal predecessors, (31), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-18 22:32:18,248 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 416 transitions. [2021-12-18 22:32:18,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-12-18 22:32:18,249 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 22:32:18,249 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 22:32:18,250 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-18 22:32:18,250 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-18 22:32:18,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 22:32:18,251 INFO L85 PathProgramCache]: Analyzing trace with hash -1780979361, now seen corresponding path program 1 times [2021-12-18 22:32:18,251 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 22:32:18,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504253816] [2021-12-18 22:32:18,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 22:32:18,251 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 22:32:18,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 22:32:18,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-18 22:32:18,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 22:32:18,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 22:32:18,297 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 22:32:18,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504253816] [2021-12-18 22:32:18,298 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504253816] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 22:32:18,298 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 22:32:18,298 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-18 22:32:18,298 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232398173] [2021-12-18 22:32:18,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 22:32:18,299 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-18 22:32:18,299 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 22:32:18,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-18 22:32:18,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-18 22:32:18,300 INFO L87 Difference]: Start difference. First operand 297 states and 416 transitions. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-18 22:32:18,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 22:32:18,468 INFO L93 Difference]: Finished difference Result 278 states and 380 transitions. [2021-12-18 22:32:18,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-18 22:32:18,469 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 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 34 [2021-12-18 22:32:18,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 22:32:18,470 INFO L225 Difference]: With dead ends: 278 [2021-12-18 22:32:18,471 INFO L226 Difference]: Without dead ends: 278 [2021-12-18 22:32:18,471 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-12-18 22:32:18,471 INFO L933 BasicCegarLoop]: 288 mSDtfsCounter, 313 mSDsluCounter, 443 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 313 SdHoareTripleChecker+Valid, 731 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-18 22:32:18,472 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [313 Valid, 731 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-18 22:32:18,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2021-12-18 22:32:18,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 264. [2021-12-18 22:32:18,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 233 states have (on average 1.390557939914163) internal successors, (324), 231 states have internal predecessors, (324), 18 states have call successors, (18), 10 states have call predecessors, (18), 12 states have return successors, (23), 22 states have call predecessors, (23), 14 states have call successors, (23) [2021-12-18 22:32:18,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 365 transitions. [2021-12-18 22:32:18,480 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 365 transitions. Word has length 34 [2021-12-18 22:32:18,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 22:32:18,480 INFO L470 AbstractCegarLoop]: Abstraction has 264 states and 365 transitions. [2021-12-18 22:32:18,481 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-18 22:32:18,481 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 365 transitions. [2021-12-18 22:32:18,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-12-18 22:32:18,482 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 22:32:18,482 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 22:32:18,482 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-18 22:32:18,482 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-18 22:32:18,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 22:32:18,483 INFO L85 PathProgramCache]: Analyzing trace with hash -2069817079, now seen corresponding path program 1 times [2021-12-18 22:32:18,483 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 22:32:18,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405206716] [2021-12-18 22:32:18,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 22:32:18,484 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 22:32:18,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 22:32:18,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 22:32:18,511 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 22:32:18,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405206716] [2021-12-18 22:32:18,512 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405206716] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 22:32:18,512 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 22:32:18,512 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-18 22:32:18,512 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743512905] [2021-12-18 22:32:18,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 22:32:18,513 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-18 22:32:18,513 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 22:32:18,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-18 22:32:18,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-18 22:32:18,514 INFO L87 Difference]: Start difference. First operand 264 states and 365 transitions. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 22:32:18,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 22:32:18,611 INFO L93 Difference]: Finished difference Result 282 states and 384 transitions. [2021-12-18 22:32:18,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-18 22:32:18,612 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 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 34 [2021-12-18 22:32:18,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 22:32:18,614 INFO L225 Difference]: With dead ends: 282 [2021-12-18 22:32:18,614 INFO L226 Difference]: Without dead ends: 282 [2021-12-18 22:32:18,614 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-18 22:32:18,615 INFO L933 BasicCegarLoop]: 243 mSDtfsCounter, 289 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 289 SdHoareTripleChecker+Valid, 421 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-18 22:32:18,615 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [289 Valid, 421 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-18 22:32:18,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2021-12-18 22:32:18,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 264. [2021-12-18 22:32:18,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 233 states have (on average 1.3819742489270386) internal successors, (322), 231 states have internal predecessors, (322), 18 states have call successors, (18), 10 states have call predecessors, (18), 12 states have return successors, (23), 22 states have call predecessors, (23), 14 states have call successors, (23) [2021-12-18 22:32:18,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 363 transitions. [2021-12-18 22:32:18,622 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 363 transitions. Word has length 34 [2021-12-18 22:32:18,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 22:32:18,623 INFO L470 AbstractCegarLoop]: Abstraction has 264 states and 363 transitions. [2021-12-18 22:32:18,623 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 22:32:18,623 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 363 transitions. [2021-12-18 22:32:18,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-12-18 22:32:18,624 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 22:32:18,624 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 22:32:18,624 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-18 22:32:18,625 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-18 22:32:18,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 22:32:18,625 INFO L85 PathProgramCache]: Analyzing trace with hash 1120484039, now seen corresponding path program 1 times [2021-12-18 22:32:18,625 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 22:32:18,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946263251] [2021-12-18 22:32:18,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 22:32:18,626 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 22:32:18,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 22:32:18,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-18 22:32:18,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 22:32:18,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 22:32:18,676 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 22:32:18,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946263251] [2021-12-18 22:32:18,676 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946263251] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 22:32:18,676 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 22:32:18,676 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-18 22:32:18,677 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589046824] [2021-12-18 22:32:18,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 22:32:18,679 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-18 22:32:18,679 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 22:32:18,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-18 22:32:18,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-18 22:32:18,680 INFO L87 Difference]: Start difference. First operand 264 states and 363 transitions. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-18 22:32:18,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 22:32:18,750 INFO L93 Difference]: Finished difference Result 258 states and 352 transitions. [2021-12-18 22:32:18,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-18 22:32:18,751 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 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 35 [2021-12-18 22:32:18,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 22:32:18,751 INFO L225 Difference]: With dead ends: 258 [2021-12-18 22:32:18,751 INFO L226 Difference]: Without dead ends: 82 [2021-12-18 22:32:18,752 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-18 22:32:18,752 INFO L933 BasicCegarLoop]: 244 mSDtfsCounter, 285 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 285 SdHoareTripleChecker+Valid, 421 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-18 22:32:18,753 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [285 Valid, 421 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-18 22:32:18,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2021-12-18 22:32:18,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2021-12-18 22:32:18,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 70 states have (on average 1.2428571428571429) internal successors, (87), 72 states have internal predecessors, (87), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2021-12-18 22:32:18,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 98 transitions. [2021-12-18 22:32:18,755 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 98 transitions. Word has length 35 [2021-12-18 22:32:18,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 22:32:18,756 INFO L470 AbstractCegarLoop]: Abstraction has 82 states and 98 transitions. [2021-12-18 22:32:18,756 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-18 22:32:18,756 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 98 transitions. [2021-12-18 22:32:18,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-12-18 22:32:18,756 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 22:32:18,756 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 22:32:18,756 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-18 22:32:18,757 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-18 22:32:18,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 22:32:18,757 INFO L85 PathProgramCache]: Analyzing trace with hash 1877593248, now seen corresponding path program 1 times [2021-12-18 22:32:18,757 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 22:32:18,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338429420] [2021-12-18 22:32:18,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 22:32:18,758 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 22:32:18,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 22:32:18,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-18 22:32:18,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 22:32:18,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-18 22:32:18,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 22:32:18,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 22:32:18,802 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 22:32:18,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338429420] [2021-12-18 22:32:18,802 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338429420] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 22:32:18,802 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 22:32:18,802 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-18 22:32:18,802 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697233437] [2021-12-18 22:32:18,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 22:32:18,803 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-18 22:32:18,803 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 22:32:18,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-18 22:32:18,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-18 22:32:18,803 INFO L87 Difference]: Start difference. First operand 82 states and 98 transitions. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-18 22:32:18,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 22:32:18,850 INFO L93 Difference]: Finished difference Result 80 states and 94 transitions. [2021-12-18 22:32:18,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-18 22:32:18,850 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 39 [2021-12-18 22:32:18,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 22:32:18,851 INFO L225 Difference]: With dead ends: 80 [2021-12-18 22:32:18,851 INFO L226 Difference]: Without dead ends: 80 [2021-12-18 22:32:18,852 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-12-18 22:32:18,852 INFO L933 BasicCegarLoop]: 77 mSDtfsCounter, 31 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-18 22:32:18,853 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 222 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-18 22:32:18,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-12-18 22:32:18,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2021-12-18 22:32:18,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 69 states have (on average 1.2173913043478262) internal successors, (84), 70 states have internal predecessors, (84), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2021-12-18 22:32:18,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 94 transitions. [2021-12-18 22:32:18,855 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 94 transitions. Word has length 39 [2021-12-18 22:32:18,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 22:32:18,856 INFO L470 AbstractCegarLoop]: Abstraction has 80 states and 94 transitions. [2021-12-18 22:32:18,856 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-18 22:32:18,856 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 94 transitions. [2021-12-18 22:32:18,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-12-18 22:32:18,857 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 22:32:18,857 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 22:32:18,857 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-18 22:32:18,857 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-18 22:32:18,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 22:32:18,858 INFO L85 PathProgramCache]: Analyzing trace with hash 1958713032, now seen corresponding path program 1 times [2021-12-18 22:32:18,858 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 22:32:18,858 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816782246] [2021-12-18 22:32:18,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 22:32:18,858 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 22:32:18,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 22:32:18,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-18 22:32:18,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 22:32:18,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 22:32:18,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 22:32:18,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 22:32:18,921 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 22:32:18,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816782246] [2021-12-18 22:32:18,921 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816782246] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 22:32:18,922 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 22:32:18,922 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-18 22:32:18,922 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82027010] [2021-12-18 22:32:18,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 22:32:18,922 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-18 22:32:18,923 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 22:32:18,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-18 22:32:18,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-18 22:32:18,923 INFO L87 Difference]: Start difference. First operand 80 states and 94 transitions. Second operand has 8 states, 8 states have (on average 4.5) internal successors, (36), 5 states have internal predecessors, (36), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-18 22:32:18,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 22:32:18,976 INFO L93 Difference]: Finished difference Result 98 states and 114 transitions. [2021-12-18 22:32:18,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-18 22:32:18,977 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 5 states have internal predecessors, (36), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 41 [2021-12-18 22:32:18,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 22:32:18,977 INFO L225 Difference]: With dead ends: 98 [2021-12-18 22:32:18,978 INFO L226 Difference]: Without dead ends: 91 [2021-12-18 22:32:18,978 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-12-18 22:32:18,978 INFO L933 BasicCegarLoop]: 68 mSDtfsCounter, 22 mSDsluCounter, 297 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 365 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-18 22:32:18,979 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 365 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-18 22:32:18,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2021-12-18 22:32:18,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 85. [2021-12-18 22:32:18,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 73 states have (on average 1.2054794520547945) internal successors, (88), 74 states have internal predecessors, (88), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) [2021-12-18 22:32:18,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 99 transitions. [2021-12-18 22:32:18,982 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 99 transitions. Word has length 41 [2021-12-18 22:32:18,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 22:32:18,982 INFO L470 AbstractCegarLoop]: Abstraction has 85 states and 99 transitions. [2021-12-18 22:32:18,982 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 5 states have internal predecessors, (36), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-18 22:32:18,982 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 99 transitions. [2021-12-18 22:32:18,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-12-18 22:32:18,983 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 22:32:18,983 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 22:32:18,983 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-18 22:32:18,983 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-18 22:32:18,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 22:32:18,984 INFO L85 PathProgramCache]: Analyzing trace with hash -306878835, now seen corresponding path program 1 times [2021-12-18 22:32:18,984 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 22:32:18,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429679669] [2021-12-18 22:32:18,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 22:32:18,985 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 22:32:18,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 22:32:19,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-18 22:32:19,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 22:32:19,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 22:32:19,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 22:32:19,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 22:32:19,066 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 22:32:19,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429679669] [2021-12-18 22:32:19,066 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429679669] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 22:32:19,066 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 22:32:19,067 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-18 22:32:19,067 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865306728] [2021-12-18 22:32:19,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 22:32:19,067 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-18 22:32:19,067 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 22:32:19,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-18 22:32:19,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-18 22:32:19,068 INFO L87 Difference]: Start difference. First operand 85 states and 99 transitions. Second operand has 8 states, 8 states have (on average 4.625) internal successors, (37), 5 states have internal predecessors, (37), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-18 22:32:19,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 22:32:19,150 INFO L93 Difference]: Finished difference Result 89 states and 104 transitions. [2021-12-18 22:32:19,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-18 22:32:19,151 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 5 states have internal predecessors, (37), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 43 [2021-12-18 22:32:19,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 22:32:19,152 INFO L225 Difference]: With dead ends: 89 [2021-12-18 22:32:19,152 INFO L226 Difference]: Without dead ends: 89 [2021-12-18 22:32:19,152 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-12-18 22:32:19,153 INFO L933 BasicCegarLoop]: 68 mSDtfsCounter, 17 mSDsluCounter, 328 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 396 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-18 22:32:19,153 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 396 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-18 22:32:19,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2021-12-18 22:32:19,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 86. [2021-12-18 22:32:19,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 74 states have (on average 1.2027027027027026) internal successors, (89), 75 states have internal predecessors, (89), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) [2021-12-18 22:32:19,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 100 transitions. [2021-12-18 22:32:19,156 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 100 transitions. Word has length 43 [2021-12-18 22:32:19,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 22:32:19,156 INFO L470 AbstractCegarLoop]: Abstraction has 86 states and 100 transitions. [2021-12-18 22:32:19,156 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 5 states have internal predecessors, (37), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-18 22:32:19,157 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 100 transitions. [2021-12-18 22:32:19,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-12-18 22:32:19,157 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 22:32:19,157 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 22:32:19,158 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-18 22:32:19,158 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-18 22:32:19,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 22:32:19,158 INFO L85 PathProgramCache]: Analyzing trace with hash 1924386198, now seen corresponding path program 1 times [2021-12-18 22:32:19,158 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 22:32:19,159 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345106178] [2021-12-18 22:32:19,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 22:32:19,159 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 22:32:19,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 22:32:19,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-18 22:32:19,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 22:32:19,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 22:32:19,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 22:32:19,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 22:32:19,199 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 22:32:19,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345106178] [2021-12-18 22:32:19,199 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345106178] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 22:32:19,199 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 22:32:19,200 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-18 22:32:19,200 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439330503] [2021-12-18 22:32:19,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 22:32:19,200 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-18 22:32:19,200 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 22:32:19,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-18 22:32:19,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-18 22:32:19,201 INFO L87 Difference]: Start difference. First operand 86 states and 100 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-18 22:32:19,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 22:32:19,251 INFO L93 Difference]: Finished difference Result 99 states and 113 transitions. [2021-12-18 22:32:19,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-18 22:32:19,252 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 42 [2021-12-18 22:32:19,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 22:32:19,252 INFO L225 Difference]: With dead ends: 99 [2021-12-18 22:32:19,252 INFO L226 Difference]: Without dead ends: 97 [2021-12-18 22:32:19,253 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-12-18 22:32:19,253 INFO L933 BasicCegarLoop]: 81 mSDtfsCounter, 23 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 231 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-18 22:32:19,254 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 231 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-18 22:32:19,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2021-12-18 22:32:19,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 88. [2021-12-18 22:32:19,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 76 states have (on average 1.1842105263157894) internal successors, (90), 77 states have internal predecessors, (90), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) [2021-12-18 22:32:19,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 101 transitions. [2021-12-18 22:32:19,257 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 101 transitions. Word has length 42 [2021-12-18 22:32:19,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 22:32:19,257 INFO L470 AbstractCegarLoop]: Abstraction has 88 states and 101 transitions. [2021-12-18 22:32:19,257 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-18 22:32:19,257 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 101 transitions. [2021-12-18 22:32:19,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-12-18 22:32:19,258 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 22:32:19,258 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 22:32:19,258 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-18 22:32:19,258 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-18 22:32:19,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 22:32:19,259 INFO L85 PathProgramCache]: Analyzing trace with hash 1375541140, now seen corresponding path program 1 times [2021-12-18 22:32:19,259 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 22:32:19,259 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94927756] [2021-12-18 22:32:19,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 22:32:19,259 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 22:32:19,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 22:32:19,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-18 22:32:19,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 22:32:19,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 22:32:19,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 22:32:19,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 22:32:19,302 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 22:32:19,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94927756] [2021-12-18 22:32:19,302 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94927756] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 22:32:19,302 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 22:32:19,302 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-18 22:32:19,303 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548685428] [2021-12-18 22:32:19,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 22:32:19,303 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-18 22:32:19,303 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 22:32:19,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-18 22:32:19,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-18 22:32:19,304 INFO L87 Difference]: Start difference. First operand 88 states and 101 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-18 22:32:19,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 22:32:19,353 INFO L93 Difference]: Finished difference Result 167 states and 191 transitions. [2021-12-18 22:32:19,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-18 22:32:19,354 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 44 [2021-12-18 22:32:19,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 22:32:19,355 INFO L225 Difference]: With dead ends: 167 [2021-12-18 22:32:19,355 INFO L226 Difference]: Without dead ends: 167 [2021-12-18 22:32:19,355 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-12-18 22:32:19,356 INFO L933 BasicCegarLoop]: 74 mSDtfsCounter, 62 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-18 22:32:19,356 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 190 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-18 22:32:19,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2021-12-18 22:32:19,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 157. [2021-12-18 22:32:19,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 137 states have (on average 1.1897810218978102) internal successors, (163), 139 states have internal predecessors, (163), 9 states have call successors, (9), 8 states have call predecessors, (9), 10 states have return successors, (10), 9 states have call predecessors, (10), 6 states have call successors, (10) [2021-12-18 22:32:19,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 182 transitions. [2021-12-18 22:32:19,360 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 182 transitions. Word has length 44 [2021-12-18 22:32:19,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 22:32:19,360 INFO L470 AbstractCegarLoop]: Abstraction has 157 states and 182 transitions. [2021-12-18 22:32:19,361 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-18 22:32:19,361 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 182 transitions. [2021-12-18 22:32:19,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-12-18 22:32:19,361 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 22:32:19,361 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 22:32:19,361 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-18 22:32:19,362 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-18 22:32:19,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 22:32:19,362 INFO L85 PathProgramCache]: Analyzing trace with hash -1144418794, now seen corresponding path program 1 times [2021-12-18 22:32:19,362 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 22:32:19,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425915714] [2021-12-18 22:32:19,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 22:32:19,362 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 22:32:19,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 22:32:19,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-18 22:32:19,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 22:32:19,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 22:32:19,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 22:32:19,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 22:32:19,443 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 22:32:19,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425915714] [2021-12-18 22:32:19,444 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425915714] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 22:32:19,444 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 22:32:19,444 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-18 22:32:19,444 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618060484] [2021-12-18 22:32:19,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 22:32:19,445 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-18 22:32:19,445 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 22:32:19,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-18 22:32:19,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-18 22:32:19,445 INFO L87 Difference]: Start difference. First operand 157 states and 182 transitions. Second operand has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-18 22:32:19,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 22:32:19,488 INFO L93 Difference]: Finished difference Result 145 states and 164 transitions. [2021-12-18 22:32:19,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-18 22:32:19,488 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 44 [2021-12-18 22:32:19,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 22:32:19,489 INFO L225 Difference]: With dead ends: 145 [2021-12-18 22:32:19,489 INFO L226 Difference]: Without dead ends: 145 [2021-12-18 22:32:19,490 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-18 22:32:19,490 INFO L933 BasicCegarLoop]: 70 mSDtfsCounter, 22 mSDsluCounter, 268 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 338 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-18 22:32:19,490 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 338 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-18 22:32:19,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2021-12-18 22:32:19,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2021-12-18 22:32:19,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 125 states have (on average 1.16) internal successors, (145), 127 states have internal predecessors, (145), 9 states have call successors, (9), 8 states have call predecessors, (9), 10 states have return successors, (10), 9 states have call predecessors, (10), 6 states have call successors, (10) [2021-12-18 22:32:19,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 164 transitions. [2021-12-18 22:32:19,494 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 164 transitions. Word has length 44 [2021-12-18 22:32:19,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 22:32:19,494 INFO L470 AbstractCegarLoop]: Abstraction has 145 states and 164 transitions. [2021-12-18 22:32:19,494 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-18 22:32:19,494 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 164 transitions. [2021-12-18 22:32:19,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-12-18 22:32:19,495 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 22:32:19,495 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 22:32:19,495 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-18 22:32:19,495 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-18 22:32:19,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 22:32:19,496 INFO L85 PathProgramCache]: Analyzing trace with hash 1135569949, now seen corresponding path program 1 times [2021-12-18 22:32:19,496 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 22:32:19,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99447703] [2021-12-18 22:32:19,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 22:32:19,496 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 22:32:19,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 22:32:19,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-18 22:32:19,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 22:32:19,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 22:32:19,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 22:32:19,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-18 22:32:19,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 22:32:19,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 22:32:19,575 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 22:32:19,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99447703] [2021-12-18 22:32:19,576 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99447703] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 22:32:19,576 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 22:32:19,576 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-18 22:32:19,576 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677383661] [2021-12-18 22:32:19,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 22:32:19,576 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-18 22:32:19,577 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 22:32:19,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-18 22:32:19,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-12-18 22:32:19,577 INFO L87 Difference]: Start difference. First operand 145 states and 164 transitions. Second operand has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 6 states have internal predecessors, (40), 3 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-18 22:32:19,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 22:32:19,689 INFO L93 Difference]: Finished difference Result 133 states and 148 transitions. [2021-12-18 22:32:19,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-18 22:32:19,690 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 6 states have internal predecessors, (40), 3 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 48 [2021-12-18 22:32:19,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 22:32:19,692 INFO L225 Difference]: With dead ends: 133 [2021-12-18 22:32:19,692 INFO L226 Difference]: Without dead ends: 129 [2021-12-18 22:32:19,692 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2021-12-18 22:32:19,693 INFO L933 BasicCegarLoop]: 63 mSDtfsCounter, 76 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 269 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-18 22:32:19,693 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [76 Valid, 269 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-18 22:32:19,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2021-12-18 22:32:19,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2021-12-18 22:32:19,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 111 states have (on average 1.1441441441441442) internal successors, (127), 113 states have internal predecessors, (127), 9 states have call successors, (9), 8 states have call predecessors, (9), 8 states have return successors, (8), 7 states have call predecessors, (8), 6 states have call successors, (8) [2021-12-18 22:32:19,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 144 transitions. [2021-12-18 22:32:19,697 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 144 transitions. Word has length 48 [2021-12-18 22:32:19,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 22:32:19,698 INFO L470 AbstractCegarLoop]: Abstraction has 129 states and 144 transitions. [2021-12-18 22:32:19,698 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 6 states have internal predecessors, (40), 3 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-18 22:32:19,698 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 144 transitions. [2021-12-18 22:32:19,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-12-18 22:32:19,698 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 22:32:19,698 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 22:32:19,699 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-18 22:32:19,699 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-18 22:32:19,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 22:32:19,699 INFO L85 PathProgramCache]: Analyzing trace with hash 1665628399, now seen corresponding path program 1 times [2021-12-18 22:32:19,699 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 22:32:19,699 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332324840] [2021-12-18 22:32:19,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 22:32:19,700 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 22:32:19,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 22:32:19,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-18 22:32:19,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 22:32:19,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 22:32:19,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 22:32:19,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-18 22:32:19,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 22:32:19,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 22:32:19,747 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 22:32:19,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332324840] [2021-12-18 22:32:19,747 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332324840] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 22:32:19,747 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 22:32:19,747 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-18 22:32:19,747 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931574619] [2021-12-18 22:32:19,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 22:32:19,748 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-18 22:32:19,748 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 22:32:19,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-18 22:32:19,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-18 22:32:19,749 INFO L87 Difference]: Start difference. First operand 129 states and 144 transitions. Second operand has 6 states, 6 states have (on average 7.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-18 22:32:19,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 22:32:19,791 INFO L93 Difference]: Finished difference Result 141 states and 156 transitions. [2021-12-18 22:32:19,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-18 22:32:19,792 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 49 [2021-12-18 22:32:19,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 22:32:19,793 INFO L225 Difference]: With dead ends: 141 [2021-12-18 22:32:19,793 INFO L226 Difference]: Without dead ends: 141 [2021-12-18 22:32:19,793 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-18 22:32:19,794 INFO L933 BasicCegarLoop]: 66 mSDtfsCounter, 14 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 243 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-18 22:32:19,794 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 243 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-18 22:32:19,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2021-12-18 22:32:19,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 135. [2021-12-18 22:32:19,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 117 states have (on average 1.1367521367521367) internal successors, (133), 119 states have internal predecessors, (133), 9 states have call successors, (9), 8 states have call predecessors, (9), 8 states have return successors, (8), 7 states have call predecessors, (8), 6 states have call successors, (8) [2021-12-18 22:32:19,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 150 transitions. [2021-12-18 22:32:19,797 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 150 transitions. Word has length 49 [2021-12-18 22:32:19,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 22:32:19,797 INFO L470 AbstractCegarLoop]: Abstraction has 135 states and 150 transitions. [2021-12-18 22:32:19,797 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-18 22:32:19,797 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 150 transitions. [2021-12-18 22:32:19,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-12-18 22:32:19,798 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 22:32:19,798 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 22:32:19,798 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-18 22:32:19,798 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-18 22:32:19,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 22:32:19,799 INFO L85 PathProgramCache]: Analyzing trace with hash 1923793837, now seen corresponding path program 1 times [2021-12-18 22:32:19,799 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 22:32:19,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8338482] [2021-12-18 22:32:19,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 22:32:19,799 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 22:32:19,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 22:32:19,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-18 22:32:19,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 22:32:19,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 22:32:19,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 22:32:19,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-18 22:32:19,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 22:32:19,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 22:32:19,875 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 22:32:19,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8338482] [2021-12-18 22:32:19,875 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8338482] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 22:32:19,875 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 22:32:19,875 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-18 22:32:19,875 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911995945] [2021-12-18 22:32:19,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 22:32:19,876 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-18 22:32:19,876 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 22:32:19,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-18 22:32:19,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-12-18 22:32:19,877 INFO L87 Difference]: Start difference. First operand 135 states and 150 transitions. Second operand has 8 states, 8 states have (on average 5.25) internal successors, (42), 5 states have internal predecessors, (42), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-18 22:32:19,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 22:32:19,988 INFO L93 Difference]: Finished difference Result 132 states and 146 transitions. [2021-12-18 22:32:19,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-18 22:32:19,989 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 5 states have internal predecessors, (42), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 49 [2021-12-18 22:32:19,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 22:32:19,990 INFO L225 Difference]: With dead ends: 132 [2021-12-18 22:32:19,990 INFO L226 Difference]: Without dead ends: 115 [2021-12-18 22:32:19,990 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2021-12-18 22:32:19,991 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 106 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 197 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-18 22:32:19,991 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [106 Valid, 197 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-18 22:32:19,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2021-12-18 22:32:19,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2021-12-18 22:32:19,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 99 states have (on average 1.121212121212121) internal successors, (111), 100 states have internal predecessors, (111), 9 states have call successors, (9), 8 states have call predecessors, (9), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-12-18 22:32:19,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 126 transitions. [2021-12-18 22:32:19,993 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 126 transitions. Word has length 49 [2021-12-18 22:32:19,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 22:32:19,994 INFO L470 AbstractCegarLoop]: Abstraction has 115 states and 126 transitions. [2021-12-18 22:32:19,994 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 5 states have internal predecessors, (42), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-18 22:32:19,994 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 126 transitions. [2021-12-18 22:32:19,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-12-18 22:32:19,994 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 22:32:19,995 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 22:32:19,995 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-18 22:32:19,995 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-18 22:32:19,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 22:32:19,995 INFO L85 PathProgramCache]: Analyzing trace with hash -635303633, now seen corresponding path program 1 times [2021-12-18 22:32:19,995 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 22:32:19,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11646226] [2021-12-18 22:32:19,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 22:32:19,996 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 22:32:20,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 22:32:20,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-18 22:32:20,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 22:32:20,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 22:32:20,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 22:32:20,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-18 22:32:20,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 22:32:20,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 22:32:20,046 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 22:32:20,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11646226] [2021-12-18 22:32:20,046 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11646226] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 22:32:20,046 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 22:32:20,046 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-18 22:32:20,046 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617064902] [2021-12-18 22:32:20,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 22:32:20,046 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-18 22:32:20,047 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 22:32:20,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-18 22:32:20,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-18 22:32:20,047 INFO L87 Difference]: Start difference. First operand 115 states and 126 transitions. Second operand has 6 states, 6 states have (on average 7.0) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-18 22:32:20,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 22:32:20,093 INFO L93 Difference]: Finished difference Result 110 states and 117 transitions. [2021-12-18 22:32:20,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-18 22:32:20,093 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 49 [2021-12-18 22:32:20,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 22:32:20,094 INFO L225 Difference]: With dead ends: 110 [2021-12-18 22:32:20,094 INFO L226 Difference]: Without dead ends: 108 [2021-12-18 22:32:20,094 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-12-18 22:32:20,095 INFO L933 BasicCegarLoop]: 61 mSDtfsCounter, 41 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-18 22:32:20,095 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 156 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-18 22:32:20,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2021-12-18 22:32:20,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2021-12-18 22:32:20,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 93 states have (on average 1.086021505376344) internal successors, (101), 93 states have internal predecessors, (101), 8 states have call successors, (8), 8 states have call predecessors, (8), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-12-18 22:32:20,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 115 transitions. [2021-12-18 22:32:20,098 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 115 transitions. Word has length 49 [2021-12-18 22:32:20,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 22:32:20,098 INFO L470 AbstractCegarLoop]: Abstraction has 108 states and 115 transitions. [2021-12-18 22:32:20,098 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-18 22:32:20,098 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 115 transitions. [2021-12-18 22:32:20,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-12-18 22:32:20,099 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 22:32:20,099 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 22:32:20,099 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-18 22:32:20,099 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-18 22:32:20,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 22:32:20,099 INFO L85 PathProgramCache]: Analyzing trace with hash -870094681, now seen corresponding path program 1 times [2021-12-18 22:32:20,100 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 22:32:20,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898483563] [2021-12-18 22:32:20,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 22:32:20,100 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 22:32:20,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 22:32:20,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-18 22:32:20,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 22:32:20,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 22:32:20,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 22:32:20,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-18 22:32:20,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 22:32:20,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 22:32:20,165 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 22:32:20,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898483563] [2021-12-18 22:32:20,165 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898483563] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 22:32:20,165 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 22:32:20,165 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-18 22:32:20,165 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012996106] [2021-12-18 22:32:20,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 22:32:20,165 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-18 22:32:20,166 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 22:32:20,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-18 22:32:20,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-18 22:32:20,166 INFO L87 Difference]: Start difference. First operand 108 states and 115 transitions. Second operand has 9 states, 9 states have (on average 4.666666666666667) internal successors, (42), 5 states have internal predecessors, (42), 2 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-18 22:32:20,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 22:32:20,225 INFO L93 Difference]: Finished difference Result 108 states and 113 transitions. [2021-12-18 22:32:20,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-18 22:32:20,226 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.666666666666667) internal successors, (42), 5 states have internal predecessors, (42), 2 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 50 [2021-12-18 22:32:20,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 22:32:20,226 INFO L225 Difference]: With dead ends: 108 [2021-12-18 22:32:20,226 INFO L226 Difference]: Without dead ends: 108 [2021-12-18 22:32:20,226 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-12-18 22:32:20,227 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 37 mSDsluCounter, 241 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 296 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-18 22:32:20,227 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 296 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-18 22:32:20,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2021-12-18 22:32:20,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2021-12-18 22:32:20,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 93 states have (on average 1.064516129032258) internal successors, (99), 93 states have internal predecessors, (99), 8 states have call successors, (8), 8 states have call predecessors, (8), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-12-18 22:32:20,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 113 transitions. [2021-12-18 22:32:20,230 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 113 transitions. Word has length 50 [2021-12-18 22:32:20,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 22:32:20,230 INFO L470 AbstractCegarLoop]: Abstraction has 108 states and 113 transitions. [2021-12-18 22:32:20,231 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.666666666666667) internal successors, (42), 5 states have internal predecessors, (42), 2 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-18 22:32:20,231 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 113 transitions. [2021-12-18 22:32:20,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-12-18 22:32:20,231 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 22:32:20,231 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 22:32:20,231 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-12-18 22:32:20,232 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-18 22:32:20,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 22:32:20,232 INFO L85 PathProgramCache]: Analyzing trace with hash -1424240836, now seen corresponding path program 1 times [2021-12-18 22:32:20,232 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 22:32:20,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785455977] [2021-12-18 22:32:20,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 22:32:20,232 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 22:32:20,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 22:32:20,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-18 22:32:20,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 22:32:20,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 22:32:20,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 22:32:20,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-18 22:32:20,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 22:32:20,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 22:32:20,313 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 22:32:20,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785455977] [2021-12-18 22:32:20,313 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785455977] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 22:32:20,313 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 22:32:20,313 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-18 22:32:20,314 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503295093] [2021-12-18 22:32:20,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 22:32:20,314 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-18 22:32:20,314 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 22:32:20,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-18 22:32:20,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-18 22:32:20,315 INFO L87 Difference]: Start difference. First operand 108 states and 113 transitions. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-18 22:32:20,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 22:32:20,379 INFO L93 Difference]: Finished difference Result 108 states and 111 transitions. [2021-12-18 22:32:20,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-18 22:32:20,379 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 51 [2021-12-18 22:32:20,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 22:32:20,380 INFO L225 Difference]: With dead ends: 108 [2021-12-18 22:32:20,380 INFO L226 Difference]: Without dead ends: 108 [2021-12-18 22:32:20,380 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-12-18 22:32:20,382 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 32 mSDsluCounter, 241 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 296 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-18 22:32:20,383 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 296 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-18 22:32:20,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2021-12-18 22:32:20,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2021-12-18 22:32:20,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 93 states have (on average 1.043010752688172) internal successors, (97), 93 states have internal predecessors, (97), 8 states have call successors, (8), 8 states have call predecessors, (8), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-12-18 22:32:20,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 111 transitions. [2021-12-18 22:32:20,386 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 111 transitions. Word has length 51 [2021-12-18 22:32:20,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 22:32:20,386 INFO L470 AbstractCegarLoop]: Abstraction has 108 states and 111 transitions. [2021-12-18 22:32:20,386 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-18 22:32:20,386 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 111 transitions. [2021-12-18 22:32:20,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-12-18 22:32:20,390 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 22:32:20,390 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 22:32:20,390 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-12-18 22:32:20,391 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-18 22:32:20,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 22:32:20,392 INFO L85 PathProgramCache]: Analyzing trace with hash -613501158, now seen corresponding path program 1 times [2021-12-18 22:32:20,392 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 22:32:20,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145014678] [2021-12-18 22:32:20,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 22:32:20,393 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 22:32:20,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 22:32:20,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-18 22:32:20,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 22:32:20,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 22:32:20,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 22:32:20,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-18 22:32:20,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 22:32:20,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 22:32:20,444 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 22:32:20,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145014678] [2021-12-18 22:32:20,444 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145014678] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 22:32:20,444 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 22:32:20,444 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-18 22:32:20,445 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797798275] [2021-12-18 22:32:20,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 22:32:20,445 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-18 22:32:20,445 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 22:32:20,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-18 22:32:20,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-18 22:32:20,446 INFO L87 Difference]: Start difference. First operand 108 states and 111 transitions. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-18 22:32:20,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 22:32:20,478 INFO L93 Difference]: Finished difference Result 83 states and 82 transitions. [2021-12-18 22:32:20,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-18 22:32:20,478 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 58 [2021-12-18 22:32:20,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 22:32:20,479 INFO L225 Difference]: With dead ends: 83 [2021-12-18 22:32:20,479 INFO L226 Difference]: Without dead ends: 0 [2021-12-18 22:32:20,479 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-18 22:32:20,480 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 10 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-18 22:32:20,480 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 116 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-18 22:32:20,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-12-18 22:32:20,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-12-18 22:32:20,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 22:32:20,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-12-18 22:32:20,481 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 58 [2021-12-18 22:32:20,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 22:32:20,481 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-18 22:32:20,481 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-18 22:32:20,481 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-12-18 22:32:20,481 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-12-18 22:32:20,484 INFO L764 garLoopResultBuilder]: Registering result SAFE for location errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK (1 of 2 remaining) [2021-12-18 22:32:20,484 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (0 of 2 remaining) [2021-12-18 22:32:20,484 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-12-18 22:32:20,487 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 22:32:20,488 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-18 22:32:20,491 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.12 10:32:20 BoogieIcfgContainer [2021-12-18 22:32:20,491 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-18 22:32:20,491 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-18 22:32:20,491 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-18 22:32:20,492 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-18 22:32:20,492 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 10:32:16" (3/4) ... [2021-12-18 22:32:20,494 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-12-18 22:32:20,501 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure KbFilter_Complete [2021-12-18 22:32:20,502 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure KbFilter_CreateClose [2021-12-18 22:32:20,502 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure IofCompleteRequest [2021-12-18 22:32:20,502 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure errorFn [2021-12-18 22:32:20,502 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure KbFilter_DispatchPassThrough [2021-12-18 22:32:20,502 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure IofCallDriver [2021-12-18 22:32:20,502 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure stubMoreProcessingRequired [2021-12-18 22:32:20,523 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 36 nodes and edges [2021-12-18 22:32:20,524 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2021-12-18 22:32:20,525 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-12-18 22:32:20,526 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-12-18 22:32:20,603 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-18 22:32:20,603 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-18 22:32:20,603 INFO L158 Benchmark]: Toolchain (without parser) took 5566.79ms. Allocated memory was 119.5MB in the beginning and 146.8MB in the end (delta: 27.3MB). Free memory was 88.0MB in the beginning and 108.0MB in the end (delta: -20.0MB). Peak memory consumption was 77.0MB. Max. memory is 16.1GB. [2021-12-18 22:32:20,604 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 88.1MB. Free memory was 45.1MB in the beginning and 45.1MB in the end (delta: 42.8kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-18 22:32:20,604 INFO L158 Benchmark]: CACSL2BoogieTranslator took 408.79ms. Allocated memory is still 119.5MB. Free memory was 87.8MB in the beginning and 89.5MB in the end (delta: -1.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-18 22:32:20,604 INFO L158 Benchmark]: Boogie Procedure Inliner took 59.36ms. Allocated memory is still 119.5MB. Free memory was 89.5MB in the beginning and 86.1MB in the end (delta: 3.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-18 22:32:20,604 INFO L158 Benchmark]: Boogie Preprocessor took 34.78ms. Allocated memory is still 119.5MB. Free memory was 86.1MB in the beginning and 83.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-18 22:32:20,605 INFO L158 Benchmark]: RCFGBuilder took 810.65ms. Allocated memory is still 119.5MB. Free memory was 83.2MB in the beginning and 49.7MB in the end (delta: 33.6MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2021-12-18 22:32:20,605 INFO L158 Benchmark]: TraceAbstraction took 4131.17ms. Allocated memory was 119.5MB in the beginning and 146.8MB in the end (delta: 27.3MB). Free memory was 49.0MB in the beginning and 41.0MB in the end (delta: 8.0MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. [2021-12-18 22:32:20,605 INFO L158 Benchmark]: Witness Printer took 111.70ms. Allocated memory is still 146.8MB. Free memory was 41.0MB in the beginning and 108.0MB in the end (delta: -67.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-18 22:32:20,606 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 88.1MB. Free memory was 45.1MB in the beginning and 45.1MB in the end (delta: 42.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 408.79ms. Allocated memory is still 119.5MB. Free memory was 87.8MB in the beginning and 89.5MB in the end (delta: -1.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 59.36ms. Allocated memory is still 119.5MB. Free memory was 89.5MB in the beginning and 86.1MB in the end (delta: 3.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 34.78ms. Allocated memory is still 119.5MB. Free memory was 86.1MB in the beginning and 83.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 810.65ms. Allocated memory is still 119.5MB. Free memory was 83.2MB in the beginning and 49.7MB in the end (delta: 33.6MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * TraceAbstraction took 4131.17ms. Allocated memory was 119.5MB in the beginning and 146.8MB in the end (delta: 27.3MB). Free memory was 49.0MB in the beginning and 41.0MB in the end (delta: 8.0MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. * Witness Printer took 111.70ms. Allocated memory is still 146.8MB. Free memory was 41.0MB in the beginning and 108.0MB in the end (delta: -67.1MB). Peak memory consumption was 2.1MB. 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: 1013]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 295]: 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 8 procedures, 209 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 4.1s, OverallIterations: 23, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2899 SdHoareTripleChecker+Valid, 1.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2869 mSDsluCounter, 8363 SdHoareTripleChecker+Invalid, 1.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4774 mSDsCounter, 375 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1691 IncrementalHoareTripleChecker+Invalid, 2066 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 375 mSolverCounterUnsat, 3589 mSDtfsCounter, 1691 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 218 GetRequests, 98 SyntacticMatches, 2 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=297occurred in iteration=7, InterpolantAutomatonStates: 139, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 23 MinimizatonAttempts, 113 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 866 NumberOfCodeBlocks, 866 NumberOfCodeBlocksAsserted, 23 NumberOfCheckSat, 843 ConstructedInterpolants, 0 QuantifiedInterpolants, 2149 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 23 InterpolantComputations, 23 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-12-18 22:32:20,642 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE