./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/ntdrivers-simplified/kbfiltr_simpl1.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 20ed64ec Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/ntdrivers-simplified/kbfiltr_simpl1.cil.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash fb0d163b15d3c265ca05b2b9dcc84c96a983bffe ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-20ed64e [2021-08-27 07:49:56,589 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 07:49:56,592 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 07:49:56,626 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 07:49:56,626 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 07:49:56,627 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 07:49:56,629 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 07:49:56,632 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 07:49:56,634 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 07:49:56,635 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 07:49:56,640 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 07:49:56,644 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 07:49:56,645 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 07:49:56,648 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 07:49:56,650 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 07:49:56,652 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 07:49:56,654 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 07:49:56,655 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 07:49:56,658 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 07:49:56,661 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 07:49:56,664 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 07:49:56,665 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 07:49:56,667 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 07:49:56,668 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 07:49:56,677 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 07:49:56,679 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 07:49:56,680 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 07:49:56,681 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 07:49:56,682 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 07:49:56,683 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 07:49:56,683 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 07:49:56,684 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 07:49:56,685 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 07:49:56,686 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 07:49:56,687 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 07:49:56,688 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 07:49:56,688 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 07:49:56,689 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 07:49:56,689 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 07:49:56,691 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 07:49:56,691 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 07:49:56,695 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-08-27 07:49:56,719 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 07:49:56,720 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 07:49:56,720 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 07:49:56,720 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 07:49:56,721 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 07:49:56,721 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 07:49:56,722 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 07:49:56,722 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 07:49:56,722 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-27 07:49:56,722 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 07:49:56,722 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 07:49:56,723 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-27 07:49:56,723 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 07:49:56,723 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-08-27 07:49:56,723 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-08-27 07:49:56,723 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-08-27 07:49:56,724 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-27 07:49:56,724 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-08-27 07:49:56,724 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-27 07:49:56,724 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 07:49:56,724 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 07:49:56,725 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 07:49:56,725 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-27 07:49:56,725 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-27 07:49:56,725 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 07:49:56,725 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-27 07:49:56,726 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-27 07:49:56,726 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-27 07:49:56,726 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 07:49:56,726 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fb0d163b15d3c265ca05b2b9dcc84c96a983bffe [2021-08-27 07:49:57,027 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 07:49:57,054 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 07:49:57,057 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 07:49:57,058 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 07:49:57,059 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 07:49:57,060 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ntdrivers-simplified/kbfiltr_simpl1.cil.c [2021-08-27 07:49:57,125 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4db1ee8c6/7f6dfa62485f492ea3ef2782bd79dff5/FLAGdcc97ecc0 [2021-08-27 07:49:57,580 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 07:49:57,589 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ntdrivers-simplified/kbfiltr_simpl1.cil.c [2021-08-27 07:49:57,614 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4db1ee8c6/7f6dfa62485f492ea3ef2782bd79dff5/FLAGdcc97ecc0 [2021-08-27 07:49:57,968 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4db1ee8c6/7f6dfa62485f492ea3ef2782bd79dff5 [2021-08-27 07:49:57,970 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 07:49:57,971 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-27 07:49:57,973 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 07:49:57,973 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 07:49:57,976 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 07:49:57,977 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 07:49:57" (1/1) ... [2021-08-27 07:49:57,978 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d0ad5a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:49:57, skipping insertion in model container [2021-08-27 07:49:57,978 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 07:49:57" (1/1) ... [2021-08-27 07:49:57,984 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 07:49:58,009 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 07:49:58,180 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ntdrivers-simplified/kbfiltr_simpl1.cil.c[17080,17093] [2021-08-27 07:49:58,183 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 07:49:58,190 INFO L203 MainTranslator]: Completed pre-run [2021-08-27 07:49:58,285 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ntdrivers-simplified/kbfiltr_simpl1.cil.c[17080,17093] [2021-08-27 07:49:58,285 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 07:49:58,308 INFO L208 MainTranslator]: Completed translation [2021-08-27 07:49:58,310 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:49:58 WrapperNode [2021-08-27 07:49:58,311 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 07:49:58,313 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-27 07:49:58,314 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-27 07:49:58,314 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-27 07:49:58,325 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:49:58" (1/1) ... [2021-08-27 07:49:58,325 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:49:58" (1/1) ... [2021-08-27 07:49:58,345 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:49:58" (1/1) ... [2021-08-27 07:49:58,347 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:49:58" (1/1) ... [2021-08-27 07:49:58,361 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:49:58" (1/1) ... [2021-08-27 07:49:58,377 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:49:58" (1/1) ... [2021-08-27 07:49:58,384 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:49:58" (1/1) ... [2021-08-27 07:49:58,391 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-27 07:49:58,394 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-27 07:49:58,394 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-27 07:49:58,394 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-27 07:49:58,395 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:49:58" (1/1) ... [2021-08-27 07:49:58,401 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-27 07:49:58,407 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 07:49:58,426 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) [2021-08-27 07:49:58,437 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 [2021-08-27 07:49:58,469 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-08-27 07:49:58,469 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-27 07:49:58,469 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-08-27 07:49:58,470 INFO L138 BoogieDeclarations]: Found implementation of procedure stub_driver_init [2021-08-27 07:49:58,470 INFO L138 BoogieDeclarations]: Found implementation of procedure _BLAST_init [2021-08-27 07:49:58,470 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_PnP [2021-08-27 07:49:58,470 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-08-27 07:49:58,470 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2021-08-27 07:49:58,471 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2021-08-27 07:49:58,472 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2021-08-27 07:49:58,472 INFO L138 BoogieDeclarations]: Found implementation of procedure KeSetEvent [2021-08-27 07:49:58,472 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2021-08-27 07:49:58,472 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_Complete [2021-08-27 07:49:58,473 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2021-08-27 07:49:58,473 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-08-27 07:49:58,473 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-08-27 07:49:58,473 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-08-27 07:49:58,476 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-27 07:49:58,477 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2021-08-27 07:49:58,477 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-08-27 07:49:58,477 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2021-08-27 07:49:58,477 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_PnP [2021-08-27 07:49:58,477 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2021-08-27 07:49:58,477 INFO L130 BoogieDeclarations]: Found specification of procedure KeSetEvent [2021-08-27 07:49:58,478 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2021-08-27 07:49:58,478 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_Complete [2021-08-27 07:49:58,478 INFO L130 BoogieDeclarations]: Found specification of procedure stub_driver_init [2021-08-27 07:49:58,478 INFO L130 BoogieDeclarations]: Found specification of procedure _BLAST_init [2021-08-27 07:49:58,478 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2021-08-27 07:49:58,478 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2021-08-27 07:49:58,479 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-08-27 07:49:58,479 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2021-08-27 07:49:58,479 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-08-27 07:49:58,479 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-27 07:49:58,479 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-27 07:49:58,479 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-27 07:49:58,480 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-08-27 07:49:58,480 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-27 07:49:58,722 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-08-27 07:49:58,827 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##14: assume !false; [2021-08-27 07:49:58,827 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##13: assume false; [2021-08-27 07:49:58,828 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-08-27 07:49:58,878 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##8: assume false; [2021-08-27 07:49:58,878 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume !false; [2021-08-27 07:49:58,919 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-08-27 07:49:58,948 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2021-08-27 07:49:58,950 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2021-08-27 07:49:58,965 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-08-27 07:49:59,086 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##43: assume false; [2021-08-27 07:49:59,086 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##44: assume !false; [2021-08-27 07:49:59,095 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-27 07:49:59,095 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-08-27 07:49:59,101 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 07:49:59 BoogieIcfgContainer [2021-08-27 07:49:59,102 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-27 07:49:59,105 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-27 07:49:59,105 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-27 07:49:59,107 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-27 07:49:59,108 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 07:49:57" (1/3) ... [2021-08-27 07:49:59,109 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d6c8fe2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 07:49:59, skipping insertion in model container [2021-08-27 07:49:59,109 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:49:58" (2/3) ... [2021-08-27 07:49:59,109 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d6c8fe2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 07:49:59, skipping insertion in model container [2021-08-27 07:49:59,109 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 07:49:59" (3/3) ... [2021-08-27 07:49:59,110 INFO L111 eAbstractionObserver]: Analyzing ICFG kbfiltr_simpl1.cil.c [2021-08-27 07:49:59,115 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-27 07:49:59,116 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-08-27 07:49:59,156 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-27 07:49:59,165 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, mConcurrency=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 [2021-08-27 07:49:59,165 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-08-27 07:49:59,187 INFO L276 IsEmpty]: Start isEmpty. Operand has 152 states, 113 states have (on average 1.5663716814159292) internal successors, (177), 127 states have internal predecessors, (177), 24 states have call successors, (24), 12 states have call predecessors, (24), 12 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) [2021-08-27 07:49:59,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-08-27 07:49:59,199 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 07:49:59,200 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 07:49:59,200 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ENSURES_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK] === [2021-08-27 07:49:59,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 07:49:59,205 INFO L82 PathProgramCache]: Analyzing trace with hash -918422152, now seen corresponding path program 1 times [2021-08-27 07:49:59,212 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 07:49:59,213 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237135036] [2021-08-27 07:49:59,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:49:59,214 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 07:49:59,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:49:59,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 07:49:59,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:49:59,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-08-27 07:49:59,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:49:59,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 07:49:59,549 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 07:49:59,549 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237135036] [2021-08-27 07:49:59,549 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237135036] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 07:49:59,550 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 07:49:59,550 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 07:49:59,551 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68275257] [2021-08-27 07:49:59,555 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-27 07:49:59,556 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 07:49:59,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-27 07:49:59,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-27 07:49:59,569 INFO L87 Difference]: Start difference. First operand has 152 states, 113 states have (on average 1.5663716814159292) internal successors, (177), 127 states have internal predecessors, (177), 24 states have call successors, (24), 12 states have call predecessors, (24), 12 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-08-27 07:49:59,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 07:49:59,894 INFO L93 Difference]: Finished difference Result 166 states and 236 transitions. [2021-08-27 07:49:59,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 07:49:59,896 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 15 [2021-08-27 07:49:59,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 07:49:59,905 INFO L225 Difference]: With dead ends: 166 [2021-08-27 07:49:59,905 INFO L226 Difference]: Without dead ends: 157 [2021-08-27 07:49:59,906 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 104.3ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-27 07:49:59,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2021-08-27 07:49:59,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 140. [2021-08-27 07:49:59,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 105 states have (on average 1.4761904761904763) internal successors, (155), 116 states have internal predecessors, (155), 24 states have call successors, (24), 12 states have call predecessors, (24), 10 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2021-08-27 07:49:59,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 192 transitions. [2021-08-27 07:49:59,950 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 192 transitions. Word has length 15 [2021-08-27 07:49:59,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 07:49:59,950 INFO L470 AbstractCegarLoop]: Abstraction has 140 states and 192 transitions. [2021-08-27 07:49:59,950 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-08-27 07:49:59,951 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 192 transitions. [2021-08-27 07:49:59,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-08-27 07:49:59,951 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 07:49:59,952 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 07:49:59,952 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-27 07:49:59,952 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK] === [2021-08-27 07:49:59,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 07:49:59,953 INFO L82 PathProgramCache]: Analyzing trace with hash -72434257, now seen corresponding path program 1 times [2021-08-27 07:49:59,953 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 07:49:59,953 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267210883] [2021-08-27 07:49:59,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:49:59,954 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 07:49:59,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:50:00,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 07:50:00,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:50:00,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-08-27 07:50:00,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:50:00,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 07:50:00,151 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 07:50:00,151 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267210883] [2021-08-27 07:50:00,151 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267210883] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 07:50:00,151 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 07:50:00,152 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-27 07:50:00,152 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174357447] [2021-08-27 07:50:00,153 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-27 07:50:00,153 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 07:50:00,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-27 07:50:00,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-08-27 07:50:00,154 INFO L87 Difference]: Start difference. First operand 140 states and 192 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 3 states have internal predecessors, (14), 3 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-08-27 07:50:00,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 07:50:00,613 INFO L93 Difference]: Finished difference Result 157 states and 214 transitions. [2021-08-27 07:50:00,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-27 07:50:00,613 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 3 states have internal predecessors, (14), 3 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 20 [2021-08-27 07:50:00,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 07:50:00,620 INFO L225 Difference]: With dead ends: 157 [2021-08-27 07:50:00,620 INFO L226 Difference]: Without dead ends: 157 [2021-08-27 07:50:00,621 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 101.9ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-08-27 07:50:00,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2021-08-27 07:50:00,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 140. [2021-08-27 07:50:00,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 105 states have (on average 1.457142857142857) internal successors, (153), 116 states have internal predecessors, (153), 24 states have call successors, (24), 12 states have call predecessors, (24), 10 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2021-08-27 07:50:00,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 190 transitions. [2021-08-27 07:50:00,643 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 190 transitions. Word has length 20 [2021-08-27 07:50:00,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 07:50:00,643 INFO L470 AbstractCegarLoop]: Abstraction has 140 states and 190 transitions. [2021-08-27 07:50:00,643 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 3 states have internal predecessors, (14), 3 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-08-27 07:50:00,643 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 190 transitions. [2021-08-27 07:50:00,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-08-27 07:50:00,644 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 07:50:00,644 INFO L512 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] [2021-08-27 07:50:00,644 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-27 07:50:00,645 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK] === [2021-08-27 07:50:00,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 07:50:00,645 INFO L82 PathProgramCache]: Analyzing trace with hash 1866893281, now seen corresponding path program 1 times [2021-08-27 07:50:00,645 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 07:50:00,645 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645086583] [2021-08-27 07:50:00,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:50:00,646 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 07:50:00,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:50:00,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 07:50:00,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:50:00,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-08-27 07:50:00,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:50:00,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-08-27 07:50:00,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:50:00,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 07:50:00,875 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 07:50:00,876 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645086583] [2021-08-27 07:50:00,876 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645086583] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 07:50:00,876 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 07:50:00,876 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-27 07:50:00,877 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338229824] [2021-08-27 07:50:00,878 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-27 07:50:00,878 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 07:50:00,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-27 07:50:00,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-08-27 07:50:00,880 INFO L87 Difference]: Start difference. First operand 140 states and 190 transitions. Second operand has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 3 states have internal predecessors, (17), 3 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-08-27 07:50:01,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 07:50:01,662 INFO L93 Difference]: Finished difference Result 220 states and 292 transitions. [2021-08-27 07:50:01,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-27 07:50:01,662 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 3 states have internal predecessors, (17), 3 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 26 [2021-08-27 07:50:01,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 07:50:01,666 INFO L225 Difference]: With dead ends: 220 [2021-08-27 07:50:01,667 INFO L226 Difference]: Without dead ends: 219 [2021-08-27 07:50:01,667 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 189.4ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-08-27 07:50:01,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2021-08-27 07:50:01,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 195. [2021-08-27 07:50:01,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 153 states have (on average 1.3660130718954249) internal successors, (209), 157 states have internal predecessors, (209), 25 states have call successors, (25), 18 states have call predecessors, (25), 16 states have return successors, (25), 21 states have call predecessors, (25), 18 states have call successors, (25) [2021-08-27 07:50:01,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 259 transitions. [2021-08-27 07:50:01,688 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 259 transitions. Word has length 26 [2021-08-27 07:50:01,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 07:50:01,688 INFO L470 AbstractCegarLoop]: Abstraction has 195 states and 259 transitions. [2021-08-27 07:50:01,688 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 3 states have internal predecessors, (17), 3 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-08-27 07:50:01,688 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 259 transitions. [2021-08-27 07:50:01,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-08-27 07:50:01,689 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 07:50:01,689 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 07:50:01,689 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-27 07:50:01,689 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK] === [2021-08-27 07:50:01,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 07:50:01,690 INFO L82 PathProgramCache]: Analyzing trace with hash 2039128128, now seen corresponding path program 1 times [2021-08-27 07:50:01,690 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 07:50:01,690 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587997636] [2021-08-27 07:50:01,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:50:01,690 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 07:50:01,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:50:01,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 07:50:01,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:50:01,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-08-27 07:50:01,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:50:01,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-08-27 07:50:01,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:50:01,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 07:50:01,968 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 07:50:01,968 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587997636] [2021-08-27 07:50:01,971 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587997636] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 07:50:01,972 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 07:50:01,972 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-27 07:50:01,972 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807457263] [2021-08-27 07:50:01,973 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-27 07:50:01,973 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 07:50:01,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-27 07:50:01,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-08-27 07:50:01,976 INFO L87 Difference]: Start difference. First operand 195 states and 259 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 3 states have internal predecessors, (18), 3 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-08-27 07:50:02,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 07:50:02,518 INFO L93 Difference]: Finished difference Result 254 states and 335 transitions. [2021-08-27 07:50:02,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-27 07:50:02,519 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 3 states have internal predecessors, (18), 3 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 27 [2021-08-27 07:50:02,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 07:50:02,521 INFO L225 Difference]: With dead ends: 254 [2021-08-27 07:50:02,521 INFO L226 Difference]: Without dead ends: 254 [2021-08-27 07:50:02,521 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 193.2ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-08-27 07:50:02,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2021-08-27 07:50:02,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 217. [2021-08-27 07:50:02,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 177 states have (on average 1.3728813559322033) internal successors, (243), 181 states have internal predecessors, (243), 21 states have call successors, (21), 16 states have call predecessors, (21), 18 states have return successors, (25), 20 states have call predecessors, (25), 16 states have call successors, (25) [2021-08-27 07:50:02,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 289 transitions. [2021-08-27 07:50:02,534 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 289 transitions. Word has length 27 [2021-08-27 07:50:02,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 07:50:02,534 INFO L470 AbstractCegarLoop]: Abstraction has 217 states and 289 transitions. [2021-08-27 07:50:02,534 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 3 states have internal predecessors, (18), 3 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-08-27 07:50:02,535 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 289 transitions. [2021-08-27 07:50:02,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-08-27 07:50:02,536 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 07:50:02,536 INFO L512 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] [2021-08-27 07:50:02,536 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-27 07:50:02,537 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK] === [2021-08-27 07:50:02,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 07:50:02,537 INFO L82 PathProgramCache]: Analyzing trace with hash -205037111, now seen corresponding path program 1 times [2021-08-27 07:50:02,537 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 07:50:02,538 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079433541] [2021-08-27 07:50:02,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:50:02,538 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 07:50:02,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:50:02,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 07:50:02,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:50:02,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-08-27 07:50:02,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:50:02,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-08-27 07:50:02,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:50:02,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 07:50:02,746 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 07:50:02,746 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079433541] [2021-08-27 07:50:02,746 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079433541] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 07:50:02,747 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 07:50:02,747 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-27 07:50:02,747 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229850765] [2021-08-27 07:50:02,747 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-27 07:50:02,748 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 07:50:02,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-27 07:50:02,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-08-27 07:50:02,749 INFO L87 Difference]: Start difference. First operand 217 states and 289 transitions. Second operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 4 states have internal predecessors, (27), 4 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-08-27 07:50:03,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 07:50:03,564 INFO L93 Difference]: Finished difference Result 217 states and 288 transitions. [2021-08-27 07:50:03,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-27 07:50:03,564 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 4 states have internal predecessors, (27), 4 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 37 [2021-08-27 07:50:03,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 07:50:03,566 INFO L225 Difference]: With dead ends: 217 [2021-08-27 07:50:03,566 INFO L226 Difference]: Without dead ends: 217 [2021-08-27 07:50:03,567 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 323.9ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-08-27 07:50:03,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2021-08-27 07:50:03,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2021-08-27 07:50:03,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 177 states have (on average 1.3672316384180792) internal successors, (242), 181 states have internal predecessors, (242), 21 states have call successors, (21), 16 states have call predecessors, (21), 18 states have return successors, (25), 20 states have call predecessors, (25), 16 states have call successors, (25) [2021-08-27 07:50:03,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 288 transitions. [2021-08-27 07:50:03,581 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 288 transitions. Word has length 37 [2021-08-27 07:50:03,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 07:50:03,581 INFO L470 AbstractCegarLoop]: Abstraction has 217 states and 288 transitions. [2021-08-27 07:50:03,581 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 4 states have internal predecessors, (27), 4 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-08-27 07:50:03,582 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 288 transitions. [2021-08-27 07:50:03,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-08-27 07:50:03,583 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 07:50:03,584 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 07:50:03,584 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-27 07:50:03,584 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK] === [2021-08-27 07:50:03,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 07:50:03,585 INFO L82 PathProgramCache]: Analyzing trace with hash -1124494785, now seen corresponding path program 1 times [2021-08-27 07:50:03,585 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 07:50:03,585 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397340607] [2021-08-27 07:50:03,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:50:03,586 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 07:50:03,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:50:03,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 07:50:03,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:50:03,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-08-27 07:50:03,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:50:03,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-08-27 07:50:03,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:50:03,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-08-27 07:50:03,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:50:03,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 07:50:03,775 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 07:50:03,775 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397340607] [2021-08-27 07:50:03,775 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397340607] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 07:50:03,775 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 07:50:03,775 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-08-27 07:50:03,776 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475995784] [2021-08-27 07:50:03,777 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-08-27 07:50:03,777 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 07:50:03,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-27 07:50:03,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-08-27 07:50:03,779 INFO L87 Difference]: Start difference. First operand 217 states and 288 transitions. Second operand has 9 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 5 states have internal predecessors, (33), 3 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-08-27 07:50:04,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 07:50:04,377 INFO L93 Difference]: Finished difference Result 208 states and 271 transitions. [2021-08-27 07:50:04,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-27 07:50:04,378 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 5 states have internal predecessors, (33), 3 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 45 [2021-08-27 07:50:04,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 07:50:04,381 INFO L225 Difference]: With dead ends: 208 [2021-08-27 07:50:04,381 INFO L226 Difference]: Without dead ends: 208 [2021-08-27 07:50:04,381 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 250.5ms TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2021-08-27 07:50:04,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2021-08-27 07:50:04,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 190. [2021-08-27 07:50:04,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 153 states have (on average 1.3594771241830066) internal successors, (208), 156 states have internal predecessors, (208), 20 states have call successors, (20), 15 states have call predecessors, (20), 16 states have return successors, (22), 19 states have call predecessors, (22), 15 states have call successors, (22) [2021-08-27 07:50:04,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 250 transitions. [2021-08-27 07:50:04,395 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 250 transitions. Word has length 45 [2021-08-27 07:50:04,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 07:50:04,396 INFO L470 AbstractCegarLoop]: Abstraction has 190 states and 250 transitions. [2021-08-27 07:50:04,396 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 5 states have internal predecessors, (33), 3 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-08-27 07:50:04,396 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 250 transitions. [2021-08-27 07:50:04,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-08-27 07:50:04,405 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 07:50:04,406 INFO L512 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] [2021-08-27 07:50:04,406 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-08-27 07:50:04,406 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK] === [2021-08-27 07:50:04,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 07:50:04,407 INFO L82 PathProgramCache]: Analyzing trace with hash 319088754, now seen corresponding path program 1 times [2021-08-27 07:50:04,407 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 07:50:04,411 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824073472] [2021-08-27 07:50:04,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:50:04,411 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 07:50:04,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:50:04,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 07:50:04,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:50:04,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-08-27 07:50:04,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:50:04,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-08-27 07:50:04,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:50:04,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-08-27 07:50:04,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:50:04,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-08-27 07:50:04,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:50:04,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-08-27 07:50:04,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:50:04,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 07:50:04,635 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 07:50:04,636 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824073472] [2021-08-27 07:50:04,636 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824073472] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 07:50:04,636 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 07:50:04,637 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-27 07:50:04,637 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278968065] [2021-08-27 07:50:04,637 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-27 07:50:04,637 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 07:50:04,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-27 07:50:04,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-08-27 07:50:04,638 INFO L87 Difference]: Start difference. First operand 190 states and 250 transitions. Second operand has 8 states, 8 states have (on average 4.375) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (10), 7 states have call predecessors, (10), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2021-08-27 07:50:05,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 07:50:05,155 INFO L93 Difference]: Finished difference Result 197 states and 257 transitions. [2021-08-27 07:50:05,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-27 07:50:05,156 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.375) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (10), 7 states have call predecessors, (10), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 51 [2021-08-27 07:50:05,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 07:50:05,158 INFO L225 Difference]: With dead ends: 197 [2021-08-27 07:50:05,158 INFO L226 Difference]: Without dead ends: 197 [2021-08-27 07:50:05,158 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 177.2ms TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2021-08-27 07:50:05,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2021-08-27 07:50:05,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 188. [2021-08-27 07:50:05,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 152 states have (on average 1.3486842105263157) internal successors, (205), 154 states have internal predecessors, (205), 19 states have call successors, (19), 15 states have call predecessors, (19), 16 states have return successors, (22), 19 states have call predecessors, (22), 15 states have call successors, (22) [2021-08-27 07:50:05,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 246 transitions. [2021-08-27 07:50:05,170 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 246 transitions. Word has length 51 [2021-08-27 07:50:05,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 07:50:05,170 INFO L470 AbstractCegarLoop]: Abstraction has 188 states and 246 transitions. [2021-08-27 07:50:05,170 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.375) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (10), 7 states have call predecessors, (10), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2021-08-27 07:50:05,170 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 246 transitions. [2021-08-27 07:50:05,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-08-27 07:50:05,174 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 07:50:05,174 INFO L512 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] [2021-08-27 07:50:05,174 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-08-27 07:50:05,175 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK] === [2021-08-27 07:50:05,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 07:50:05,175 INFO L82 PathProgramCache]: Analyzing trace with hash 1545193370, now seen corresponding path program 1 times [2021-08-27 07:50:05,175 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 07:50:05,176 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932117152] [2021-08-27 07:50:05,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:50:05,176 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 07:50:05,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:50:05,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 07:50:05,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:50:05,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-08-27 07:50:05,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:50:05,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-08-27 07:50:05,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:50:05,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-08-27 07:50:05,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:50:05,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-08-27 07:50:05,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:50:05,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 07:50:05,427 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 07:50:05,427 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932117152] [2021-08-27 07:50:05,428 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932117152] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 07:50:05,428 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 07:50:05,428 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-08-27 07:50:05,428 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031662972] [2021-08-27 07:50:05,428 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-08-27 07:50:05,429 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 07:50:05,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-08-27 07:50:05,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-08-27 07:50:05,430 INFO L87 Difference]: Start difference. First operand 188 states and 246 transitions. Second operand has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 7 states have internal predecessors, (38), 4 states have call successors, (7), 7 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2021-08-27 07:50:06,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 07:50:06,472 INFO L93 Difference]: Finished difference Result 210 states and 270 transitions. [2021-08-27 07:50:06,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-27 07:50:06,473 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 7 states have internal predecessors, (38), 4 states have call successors, (7), 7 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) Word has length 50 [2021-08-27 07:50:06,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 07:50:06,475 INFO L225 Difference]: With dead ends: 210 [2021-08-27 07:50:06,475 INFO L226 Difference]: Without dead ends: 210 [2021-08-27 07:50:06,475 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 568.7ms TimeCoverageRelationStatistics Valid=107, Invalid=313, Unknown=0, NotChecked=0, Total=420 [2021-08-27 07:50:06,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2021-08-27 07:50:06,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 188. [2021-08-27 07:50:06,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 152 states have (on average 1.3421052631578947) internal successors, (204), 154 states have internal predecessors, (204), 19 states have call successors, (19), 15 states have call predecessors, (19), 16 states have return successors, (21), 19 states have call predecessors, (21), 15 states have call successors, (21) [2021-08-27 07:50:06,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 244 transitions. [2021-08-27 07:50:06,485 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 244 transitions. Word has length 50 [2021-08-27 07:50:06,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 07:50:06,487 INFO L470 AbstractCegarLoop]: Abstraction has 188 states and 244 transitions. [2021-08-27 07:50:06,487 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 7 states have internal predecessors, (38), 4 states have call successors, (7), 7 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2021-08-27 07:50:06,487 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 244 transitions. [2021-08-27 07:50:06,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-08-27 07:50:06,488 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 07:50:06,488 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 07:50:06,489 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-08-27 07:50:06,489 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK] === [2021-08-27 07:50:06,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 07:50:06,489 INFO L82 PathProgramCache]: Analyzing trace with hash 473822133, now seen corresponding path program 1 times [2021-08-27 07:50:06,489 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 07:50:06,490 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814403209] [2021-08-27 07:50:06,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:50:06,490 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 07:50:06,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:50:06,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 07:50:06,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:50:06,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-08-27 07:50:06,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:50:06,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-08-27 07:50:06,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:50:06,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-08-27 07:50:06,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:50:06,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-08-27 07:50:06,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:50:06,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 07:50:06,675 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 07:50:06,675 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814403209] [2021-08-27 07:50:06,675 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814403209] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 07:50:06,675 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 07:50:06,675 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-27 07:50:06,676 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881592526] [2021-08-27 07:50:06,676 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-27 07:50:06,676 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 07:50:06,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-27 07:50:06,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-08-27 07:50:06,677 INFO L87 Difference]: Start difference. First operand 188 states and 244 transitions. Second operand has 8 states, 8 states have (on average 5.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2021-08-27 07:50:07,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 07:50:07,134 INFO L93 Difference]: Finished difference Result 213 states and 276 transitions. [2021-08-27 07:50:07,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-27 07:50:07,134 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 52 [2021-08-27 07:50:07,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 07:50:07,135 INFO L225 Difference]: With dead ends: 213 [2021-08-27 07:50:07,135 INFO L226 Difference]: Without dead ends: 213 [2021-08-27 07:50:07,136 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 183.7ms TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-08-27 07:50:07,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2021-08-27 07:50:07,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 194. [2021-08-27 07:50:07,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 158 states have (on average 1.3417721518987342) internal successors, (212), 160 states have internal predecessors, (212), 19 states have call successors, (19), 15 states have call predecessors, (19), 16 states have return successors, (21), 19 states have call predecessors, (21), 15 states have call successors, (21) [2021-08-27 07:50:07,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 252 transitions. [2021-08-27 07:50:07,142 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 252 transitions. Word has length 52 [2021-08-27 07:50:07,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 07:50:07,143 INFO L470 AbstractCegarLoop]: Abstraction has 194 states and 252 transitions. [2021-08-27 07:50:07,143 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2021-08-27 07:50:07,143 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 252 transitions. [2021-08-27 07:50:07,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-08-27 07:50:07,144 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 07:50:07,144 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 07:50:07,144 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-08-27 07:50:07,144 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK] === [2021-08-27 07:50:07,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 07:50:07,145 INFO L82 PathProgramCache]: Analyzing trace with hash -1520322573, now seen corresponding path program 1 times [2021-08-27 07:50:07,145 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 07:50:07,145 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288962235] [2021-08-27 07:50:07,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:50:07,145 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 07:50:07,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:50:07,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 07:50:07,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:50:07,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-08-27 07:50:07,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:50:07,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-08-27 07:50:07,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:50:07,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-08-27 07:50:07,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:50:07,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-08-27 07:50:07,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:50:07,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 07:50:07,363 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 07:50:07,363 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288962235] [2021-08-27 07:50:07,363 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288962235] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 07:50:07,363 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 07:50:07,364 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-08-27 07:50:07,364 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191537604] [2021-08-27 07:50:07,364 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-08-27 07:50:07,364 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 07:50:07,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-08-27 07:50:07,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-08-27 07:50:07,365 INFO L87 Difference]: Start difference. First operand 194 states and 252 transitions. Second operand has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 7 states have internal predecessors, (40), 3 states have call successors, (7), 7 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2021-08-27 07:50:08,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 07:50:08,152 INFO L93 Difference]: Finished difference Result 219 states and 280 transitions. [2021-08-27 07:50:08,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-27 07:50:08,152 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 7 states have internal predecessors, (40), 3 states have call successors, (7), 7 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) Word has length 52 [2021-08-27 07:50:08,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 07:50:08,154 INFO L225 Difference]: With dead ends: 219 [2021-08-27 07:50:08,154 INFO L226 Difference]: Without dead ends: 219 [2021-08-27 07:50:08,154 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 425.3ms TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2021-08-27 07:50:08,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2021-08-27 07:50:08,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 199. [2021-08-27 07:50:08,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 163 states have (on average 1.3374233128834356) internal successors, (218), 165 states have internal predecessors, (218), 19 states have call successors, (19), 15 states have call predecessors, (19), 16 states have return successors, (21), 19 states have call predecessors, (21), 15 states have call successors, (21) [2021-08-27 07:50:08,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 258 transitions. [2021-08-27 07:50:08,160 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 258 transitions. Word has length 52 [2021-08-27 07:50:08,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 07:50:08,160 INFO L470 AbstractCegarLoop]: Abstraction has 199 states and 258 transitions. [2021-08-27 07:50:08,161 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 7 states have internal predecessors, (40), 3 states have call successors, (7), 7 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2021-08-27 07:50:08,161 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 258 transitions. [2021-08-27 07:50:08,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-08-27 07:50:08,162 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 07:50:08,162 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 07:50:08,162 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-08-27 07:50:08,162 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK] === [2021-08-27 07:50:08,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 07:50:08,162 INFO L82 PathProgramCache]: Analyzing trace with hash -1373629771, now seen corresponding path program 1 times [2021-08-27 07:50:08,162 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 07:50:08,162 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893501890] [2021-08-27 07:50:08,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:50:08,163 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 07:50:08,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:50:08,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 07:50:08,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:50:08,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-08-27 07:50:08,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:50:08,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-08-27 07:50:08,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:50:08,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-08-27 07:50:08,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:50:08,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-08-27 07:50:08,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:50:08,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 07:50:08,342 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 07:50:08,342 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893501890] [2021-08-27 07:50:08,342 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893501890] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 07:50:08,342 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 07:50:08,342 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-08-27 07:50:08,342 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247649164] [2021-08-27 07:50:08,343 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-08-27 07:50:08,343 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 07:50:08,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-27 07:50:08,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-08-27 07:50:08,344 INFO L87 Difference]: Start difference. First operand 199 states and 258 transitions. Second operand has 10 states, 10 states have (on average 4.0) internal successors, (40), 5 states have internal predecessors, (40), 3 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2021-08-27 07:50:08,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 07:50:08,842 INFO L93 Difference]: Finished difference Result 200 states and 256 transitions. [2021-08-27 07:50:08,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-27 07:50:08,843 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.0) internal successors, (40), 5 states have internal predecessors, (40), 3 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) Word has length 52 [2021-08-27 07:50:08,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 07:50:08,843 INFO L225 Difference]: With dead ends: 200 [2021-08-27 07:50:08,844 INFO L226 Difference]: Without dead ends: 94 [2021-08-27 07:50:08,844 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 179.3ms TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2021-08-27 07:50:08,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2021-08-27 07:50:08,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2021-08-27 07:50:08,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 70 states have (on average 1.1857142857142857) internal successors, (83), 71 states have internal predecessors, (83), 14 states have call successors, (14), 13 states have call predecessors, (14), 9 states have return successors, (9), 9 states have call predecessors, (9), 8 states have call successors, (9) [2021-08-27 07:50:08,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 106 transitions. [2021-08-27 07:50:08,847 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 106 transitions. Word has length 52 [2021-08-27 07:50:08,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 07:50:08,847 INFO L470 AbstractCegarLoop]: Abstraction has 94 states and 106 transitions. [2021-08-27 07:50:08,847 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.0) internal successors, (40), 5 states have internal predecessors, (40), 3 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2021-08-27 07:50:08,847 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 106 transitions. [2021-08-27 07:50:08,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-08-27 07:50:08,848 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 07:50:08,848 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 07:50:08,848 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-08-27 07:50:08,848 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK] === [2021-08-27 07:50:08,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 07:50:08,849 INFO L82 PathProgramCache]: Analyzing trace with hash -1808029019, now seen corresponding path program 1 times [2021-08-27 07:50:08,849 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 07:50:08,849 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467166542] [2021-08-27 07:50:08,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:50:08,849 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 07:50:08,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:50:08,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 07:50:08,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:50:08,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-08-27 07:50:08,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:50:08,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-08-27 07:50:09,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:50:09,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-08-27 07:50:09,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:50:09,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-08-27 07:50:09,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:50:09,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-08-27 07:50:09,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:50:09,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-08-27 07:50:09,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:50:09,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 07:50:09,081 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 07:50:09,081 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467166542] [2021-08-27 07:50:09,082 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467166542] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 07:50:09,082 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 07:50:09,082 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-08-27 07:50:09,082 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729756243] [2021-08-27 07:50:09,082 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-08-27 07:50:09,082 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 07:50:09,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-08-27 07:50:09,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-08-27 07:50:09,083 INFO L87 Difference]: Start difference. First operand 94 states and 106 transitions. Second operand has 12 states, 12 states have (on average 3.4166666666666665) internal successors, (41), 6 states have internal predecessors, (41), 3 states have call successors, (11), 9 states have call predecessors, (11), 4 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) [2021-08-27 07:50:09,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 07:50:09,450 INFO L93 Difference]: Finished difference Result 94 states and 104 transitions. [2021-08-27 07:50:09,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-27 07:50:09,450 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.4166666666666665) internal successors, (41), 6 states have internal predecessors, (41), 3 states have call successors, (11), 9 states have call predecessors, (11), 4 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) Word has length 59 [2021-08-27 07:50:09,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 07:50:09,451 INFO L225 Difference]: With dead ends: 94 [2021-08-27 07:50:09,451 INFO L226 Difference]: Without dead ends: 94 [2021-08-27 07:50:09,451 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 319.6ms TimeCoverageRelationStatistics Valid=87, Invalid=255, Unknown=0, NotChecked=0, Total=342 [2021-08-27 07:50:09,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2021-08-27 07:50:09,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2021-08-27 07:50:09,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 70 states have (on average 1.1571428571428573) internal successors, (81), 71 states have internal predecessors, (81), 14 states have call successors, (14), 13 states have call predecessors, (14), 9 states have return successors, (9), 9 states have call predecessors, (9), 8 states have call successors, (9) [2021-08-27 07:50:09,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 104 transitions. [2021-08-27 07:50:09,454 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 104 transitions. Word has length 59 [2021-08-27 07:50:09,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 07:50:09,454 INFO L470 AbstractCegarLoop]: Abstraction has 94 states and 104 transitions. [2021-08-27 07:50:09,454 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.4166666666666665) internal successors, (41), 6 states have internal predecessors, (41), 3 states have call successors, (11), 9 states have call predecessors, (11), 4 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) [2021-08-27 07:50:09,454 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 104 transitions. [2021-08-27 07:50:09,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-08-27 07:50:09,455 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 07:50:09,455 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 07:50:09,455 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-08-27 07:50:09,455 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK] === [2021-08-27 07:50:09,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 07:50:09,456 INFO L82 PathProgramCache]: Analyzing trace with hash 2142497275, now seen corresponding path program 1 times [2021-08-27 07:50:09,456 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 07:50:09,456 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914155099] [2021-08-27 07:50:09,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:50:09,456 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 07:50:09,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:50:09,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 07:50:09,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:50:09,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-08-27 07:50:09,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:50:09,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-08-27 07:50:09,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:50:09,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-08-27 07:50:09,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:50:09,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-08-27 07:50:09,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:50:09,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-08-27 07:50:09,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:50:09,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-08-27 07:50:09,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:50:09,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 07:50:09,663 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 07:50:09,663 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914155099] [2021-08-27 07:50:09,663 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914155099] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 07:50:09,664 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 07:50:09,664 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-08-27 07:50:09,664 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365696176] [2021-08-27 07:50:09,664 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-08-27 07:50:09,664 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 07:50:09,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-08-27 07:50:09,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-08-27 07:50:09,665 INFO L87 Difference]: Start difference. First operand 94 states and 104 transitions. Second operand has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (11), 8 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2021-08-27 07:50:09,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 07:50:09,882 INFO L93 Difference]: Finished difference Result 103 states and 114 transitions. [2021-08-27 07:50:09,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-27 07:50:09,882 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (11), 8 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) Word has length 61 [2021-08-27 07:50:09,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 07:50:09,883 INFO L225 Difference]: With dead ends: 103 [2021-08-27 07:50:09,883 INFO L226 Difference]: Without dead ends: 93 [2021-08-27 07:50:09,883 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 148.3ms TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2021-08-27 07:50:09,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2021-08-27 07:50:09,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 89. [2021-08-27 07:50:09,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 65 states have (on average 1.1384615384615384) internal successors, (74), 66 states have internal predecessors, (74), 14 states have call successors, (14), 13 states have call predecessors, (14), 9 states have return successors, (9), 9 states have call predecessors, (9), 8 states have call successors, (9) [2021-08-27 07:50:09,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 97 transitions. [2021-08-27 07:50:09,886 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 97 transitions. Word has length 61 [2021-08-27 07:50:09,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 07:50:09,886 INFO L470 AbstractCegarLoop]: Abstraction has 89 states and 97 transitions. [2021-08-27 07:50:09,886 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (11), 8 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2021-08-27 07:50:09,886 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 97 transitions. [2021-08-27 07:50:09,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-08-27 07:50:09,887 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 07:50:09,887 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 07:50:09,887 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-08-27 07:50:09,887 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK] === [2021-08-27 07:50:09,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 07:50:09,888 INFO L82 PathProgramCache]: Analyzing trace with hash -378637396, now seen corresponding path program 1 times [2021-08-27 07:50:09,888 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 07:50:09,888 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254030694] [2021-08-27 07:50:09,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:50:09,888 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 07:50:09,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:50:09,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 07:50:09,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:50:10,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-08-27 07:50:10,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:50:10,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-08-27 07:50:10,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:50:10,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-08-27 07:50:10,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:50:10,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-08-27 07:50:10,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:50:10,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-08-27 07:50:10,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:50:10,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-08-27 07:50:10,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:50:10,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 07:50:10,105 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 07:50:10,105 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254030694] [2021-08-27 07:50:10,105 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254030694] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 07:50:10,105 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 07:50:10,105 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-08-27 07:50:10,105 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802315287] [2021-08-27 07:50:10,106 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-08-27 07:50:10,106 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 07:50:10,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-08-27 07:50:10,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-08-27 07:50:10,106 INFO L87 Difference]: Start difference. First operand 89 states and 97 transitions. Second operand has 12 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 5 states have internal predecessors, (44), 2 states have call successors, (11), 8 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2021-08-27 07:50:10,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 07:50:10,294 INFO L93 Difference]: Finished difference Result 89 states and 96 transitions. [2021-08-27 07:50:10,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-27 07:50:10,295 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 5 states have internal predecessors, (44), 2 states have call successors, (11), 8 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) Word has length 62 [2021-08-27 07:50:10,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 07:50:10,295 INFO L225 Difference]: With dead ends: 89 [2021-08-27 07:50:10,295 INFO L226 Difference]: Without dead ends: 89 [2021-08-27 07:50:10,296 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 159.3ms TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2021-08-27 07:50:10,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2021-08-27 07:50:10,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2021-08-27 07:50:10,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 65 states have (on average 1.123076923076923) internal successors, (73), 66 states have internal predecessors, (73), 14 states have call successors, (14), 13 states have call predecessors, (14), 9 states have return successors, (9), 9 states have call predecessors, (9), 8 states have call successors, (9) [2021-08-27 07:50:10,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 96 transitions. [2021-08-27 07:50:10,298 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 96 transitions. Word has length 62 [2021-08-27 07:50:10,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 07:50:10,299 INFO L470 AbstractCegarLoop]: Abstraction has 89 states and 96 transitions. [2021-08-27 07:50:10,299 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 5 states have internal predecessors, (44), 2 states have call successors, (11), 8 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2021-08-27 07:50:10,299 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 96 transitions. [2021-08-27 07:50:10,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-08-27 07:50:10,299 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 07:50:10,299 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 07:50:10,300 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-08-27 07:50:10,300 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK] === [2021-08-27 07:50:10,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 07:50:10,300 INFO L82 PathProgramCache]: Analyzing trace with hash -1528038085, now seen corresponding path program 1 times [2021-08-27 07:50:10,300 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 07:50:10,300 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854053391] [2021-08-27 07:50:10,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:50:10,301 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 07:50:10,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:50:10,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 07:50:10,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:50:10,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-08-27 07:50:10,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:50:10,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-08-27 07:50:10,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:50:10,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-08-27 07:50:10,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:50:10,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-08-27 07:50:10,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:50:10,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-08-27 07:50:10,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:50:10,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-08-27 07:50:10,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:50:10,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 07:50:10,466 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 07:50:10,466 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854053391] [2021-08-27 07:50:10,466 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854053391] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 07:50:10,466 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 07:50:10,466 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-08-27 07:50:10,466 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352716139] [2021-08-27 07:50:10,466 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-08-27 07:50:10,467 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 07:50:10,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-27 07:50:10,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-08-27 07:50:10,468 INFO L87 Difference]: Start difference. First operand 89 states and 96 transitions. Second operand has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (11), 8 states have call predecessors, (11), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2021-08-27 07:50:10,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 07:50:10,621 INFO L93 Difference]: Finished difference Result 102 states and 108 transitions. [2021-08-27 07:50:10,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-27 07:50:10,622 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (11), 8 states have call predecessors, (11), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 62 [2021-08-27 07:50:10,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 07:50:10,623 INFO L225 Difference]: With dead ends: 102 [2021-08-27 07:50:10,623 INFO L226 Difference]: Without dead ends: 100 [2021-08-27 07:50:10,625 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 159.1ms TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-08-27 07:50:10,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2021-08-27 07:50:10,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 91. [2021-08-27 07:50:10,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 67 states have (on average 1.1044776119402986) internal successors, (74), 68 states have internal predecessors, (74), 14 states have call successors, (14), 13 states have call predecessors, (14), 9 states have return successors, (9), 9 states have call predecessors, (9), 8 states have call successors, (9) [2021-08-27 07:50:10,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 97 transitions. [2021-08-27 07:50:10,629 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 97 transitions. Word has length 62 [2021-08-27 07:50:10,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 07:50:10,629 INFO L470 AbstractCegarLoop]: Abstraction has 91 states and 97 transitions. [2021-08-27 07:50:10,629 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (11), 8 states have call predecessors, (11), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2021-08-27 07:50:10,629 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 97 transitions. [2021-08-27 07:50:10,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-08-27 07:50:10,630 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 07:50:10,630 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 07:50:10,630 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-08-27 07:50:10,631 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK] === [2021-08-27 07:50:10,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 07:50:10,631 INFO L82 PathProgramCache]: Analyzing trace with hash 505994853, now seen corresponding path program 1 times [2021-08-27 07:50:10,631 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 07:50:10,631 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518485473] [2021-08-27 07:50:10,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:50:10,631 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 07:50:10,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:50:10,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 07:50:10,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:50:10,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-08-27 07:50:10,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:50:10,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-08-27 07:50:10,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:50:10,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-08-27 07:50:10,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:50:10,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-08-27 07:50:10,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:50:10,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-08-27 07:50:10,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:50:10,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-08-27 07:50:10,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:50:10,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 07:50:10,794 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 07:50:10,794 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518485473] [2021-08-27 07:50:10,795 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518485473] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 07:50:10,796 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 07:50:10,796 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-08-27 07:50:10,796 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866640834] [2021-08-27 07:50:10,796 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-08-27 07:50:10,796 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 07:50:10,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-27 07:50:10,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-08-27 07:50:10,797 INFO L87 Difference]: Start difference. First operand 91 states and 97 transitions. Second operand has 9 states, 9 states have (on average 5.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (11), 9 states have call predecessors, (11), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-08-27 07:50:11,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 07:50:11,037 INFO L93 Difference]: Finished difference Result 166 states and 176 transitions. [2021-08-27 07:50:11,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-27 07:50:11,037 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (11), 9 states have call predecessors, (11), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 63 [2021-08-27 07:50:11,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 07:50:11,038 INFO L225 Difference]: With dead ends: 166 [2021-08-27 07:50:11,038 INFO L226 Difference]: Without dead ends: 166 [2021-08-27 07:50:11,039 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 176.8ms TimeCoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2021-08-27 07:50:11,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2021-08-27 07:50:11,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 154. [2021-08-27 07:50:11,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 116 states have (on average 1.103448275862069) internal successors, (128), 118 states have internal predecessors, (128), 21 states have call successors, (21), 20 states have call predecessors, (21), 16 states have return successors, (16), 15 states have call predecessors, (16), 14 states have call successors, (16) [2021-08-27 07:50:11,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 165 transitions. [2021-08-27 07:50:11,043 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 165 transitions. Word has length 63 [2021-08-27 07:50:11,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 07:50:11,044 INFO L470 AbstractCegarLoop]: Abstraction has 154 states and 165 transitions. [2021-08-27 07:50:11,044 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (11), 9 states have call predecessors, (11), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-08-27 07:50:11,044 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 165 transitions. [2021-08-27 07:50:11,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-08-27 07:50:11,045 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 07:50:11,045 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 07:50:11,045 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-08-27 07:50:11,045 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK] === [2021-08-27 07:50:11,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 07:50:11,046 INFO L82 PathProgramCache]: Analyzing trace with hash -2013965081, now seen corresponding path program 1 times [2021-08-27 07:50:11,046 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 07:50:11,047 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390379887] [2021-08-27 07:50:11,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:50:11,048 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 07:50:11,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:50:11,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 07:50:11,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:50:11,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-08-27 07:50:11,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:50:11,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-08-27 07:50:11,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:50:11,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-08-27 07:50:11,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:50:11,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-08-27 07:50:11,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:50:11,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-08-27 07:50:11,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:50:11,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-08-27 07:50:11,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:50:11,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 07:50:11,275 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 07:50:11,275 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390379887] [2021-08-27 07:50:11,275 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390379887] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 07:50:11,275 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 07:50:11,275 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-08-27 07:50:11,276 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018473206] [2021-08-27 07:50:11,276 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-08-27 07:50:11,276 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 07:50:11,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-08-27 07:50:11,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-08-27 07:50:11,277 INFO L87 Difference]: Start difference. First operand 154 states and 165 transitions. Second operand has 12 states, 12 states have (on average 3.75) internal successors, (45), 5 states have internal predecessors, (45), 2 states have call successors, (11), 8 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2021-08-27 07:50:11,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 07:50:11,455 INFO L93 Difference]: Finished difference Result 140 states and 147 transitions. [2021-08-27 07:50:11,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-27 07:50:11,456 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.75) internal successors, (45), 5 states have internal predecessors, (45), 2 states have call successors, (11), 8 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) Word has length 63 [2021-08-27 07:50:11,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 07:50:11,456 INFO L225 Difference]: With dead ends: 140 [2021-08-27 07:50:11,457 INFO L226 Difference]: Without dead ends: 140 [2021-08-27 07:50:11,457 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 138.3ms TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2021-08-27 07:50:11,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2021-08-27 07:50:11,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2021-08-27 07:50:11,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 105 states have (on average 1.0761904761904761) internal successors, (113), 106 states have internal predecessors, (113), 20 states have call successors, (20), 19 states have call predecessors, (20), 14 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2021-08-27 07:50:11,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 147 transitions. [2021-08-27 07:50:11,462 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 147 transitions. Word has length 63 [2021-08-27 07:50:11,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 07:50:11,463 INFO L470 AbstractCegarLoop]: Abstraction has 140 states and 147 transitions. [2021-08-27 07:50:11,463 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.75) internal successors, (45), 5 states have internal predecessors, (45), 2 states have call successors, (11), 8 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2021-08-27 07:50:11,463 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 147 transitions. [2021-08-27 07:50:11,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-08-27 07:50:11,463 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 07:50:11,464 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 07:50:11,464 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-08-27 07:50:11,464 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK] === [2021-08-27 07:50:11,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 07:50:11,465 INFO L82 PathProgramCache]: Analyzing trace with hash -362185685, now seen corresponding path program 1 times [2021-08-27 07:50:11,465 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 07:50:11,465 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227659694] [2021-08-27 07:50:11,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:50:11,465 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 07:50:11,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:50:11,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 07:50:11,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:50:11,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-08-27 07:50:11,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:50:11,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-08-27 07:50:11,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:50:11,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-08-27 07:50:11,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:50:11,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-08-27 07:50:11,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:50:11,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-08-27 07:50:11,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:50:11,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-08-27 07:50:11,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:50:11,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 07:50:11,644 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 07:50:11,644 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227659694] [2021-08-27 07:50:11,644 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227659694] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 07:50:11,644 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 07:50:11,644 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-08-27 07:50:11,644 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653710238] [2021-08-27 07:50:11,646 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-08-27 07:50:11,646 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 07:50:11,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-27 07:50:11,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-08-27 07:50:11,646 INFO L87 Difference]: Start difference. First operand 140 states and 147 transitions. Second operand has 9 states, 9 states have (on average 5.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (11), 9 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-08-27 07:50:11,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 07:50:11,792 INFO L93 Difference]: Finished difference Result 135 states and 138 transitions. [2021-08-27 07:50:11,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-27 07:50:11,792 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (11), 9 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 63 [2021-08-27 07:50:11,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 07:50:11,793 INFO L225 Difference]: With dead ends: 135 [2021-08-27 07:50:11,793 INFO L226 Difference]: Without dead ends: 133 [2021-08-27 07:50:11,794 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 163.6ms TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2021-08-27 07:50:11,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2021-08-27 07:50:11,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2021-08-27 07:50:11,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 99 states have (on average 1.0404040404040404) internal successors, (103), 99 states have internal predecessors, (103), 19 states have call successors, (19), 19 states have call predecessors, (19), 14 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2021-08-27 07:50:11,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 136 transitions. [2021-08-27 07:50:11,799 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 136 transitions. Word has length 63 [2021-08-27 07:50:11,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 07:50:11,799 INFO L470 AbstractCegarLoop]: Abstraction has 133 states and 136 transitions. [2021-08-27 07:50:11,799 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (11), 9 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-08-27 07:50:11,799 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 136 transitions. [2021-08-27 07:50:11,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-08-27 07:50:11,800 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 07:50:11,801 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 07:50:11,801 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-08-27 07:50:11,801 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK] === [2021-08-27 07:50:11,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 07:50:11,801 INFO L82 PathProgramCache]: Analyzing trace with hash -991334339, now seen corresponding path program 1 times [2021-08-27 07:50:11,801 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 07:50:11,801 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739119624] [2021-08-27 07:50:11,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:50:11,802 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 07:50:11,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:50:11,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 07:50:11,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:50:11,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-08-27 07:50:11,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:50:11,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-08-27 07:50:11,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:50:11,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-08-27 07:50:11,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:50:11,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-08-27 07:50:11,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:50:11,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-08-27 07:50:11,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:50:11,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-08-27 07:50:11,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:50:11,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-08-27 07:50:11,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:50:11,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 07:50:11,998 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 07:50:11,998 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739119624] [2021-08-27 07:50:11,999 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739119624] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 07:50:11,999 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 07:50:11,999 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-08-27 07:50:11,999 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150173266] [2021-08-27 07:50:12,000 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-08-27 07:50:12,000 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 07:50:12,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-08-27 07:50:12,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-08-27 07:50:12,001 INFO L87 Difference]: Start difference. First operand 133 states and 136 transitions. Second operand has 11 states, 11 states have (on average 4.909090909090909) internal successors, (54), 5 states have internal predecessors, (54), 3 states have call successors, (12), 9 states have call predecessors, (12), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2021-08-27 07:50:12,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 07:50:12,173 INFO L93 Difference]: Finished difference Result 104 states and 103 transitions. [2021-08-27 07:50:12,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-27 07:50:12,174 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.909090909090909) internal successors, (54), 5 states have internal predecessors, (54), 3 states have call successors, (12), 9 states have call predecessors, (12), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 74 [2021-08-27 07:50:12,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 07:50:12,174 INFO L225 Difference]: With dead ends: 104 [2021-08-27 07:50:12,174 INFO L226 Difference]: Without dead ends: 0 [2021-08-27 07:50:12,175 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 173.3ms TimeCoverageRelationStatistics Valid=58, Invalid=98, Unknown=0, NotChecked=0, Total=156 [2021-08-27 07:50:12,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-27 07:50:12,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-27 07:50:12,175 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) [2021-08-27 07:50:12,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-27 07:50:12,175 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 74 [2021-08-27 07:50:12,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 07:50:12,175 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-27 07:50:12,176 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.909090909090909) internal successors, (54), 5 states have internal predecessors, (54), 3 states have call successors, (12), 9 states have call predecessors, (12), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2021-08-27 07:50:12,176 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-27 07:50:12,176 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-27 07:50:12,178 INFO L764 garLoopResultBuilder]: Registering result SAFE for location errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK [2021-08-27 07:50:12,179 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr0ENSURES_VIOLATIONMEMORY_LEAK [2021-08-27 07:50:12,182 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-08-27 07:50:12,185 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-27 07:50:12,188 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 07:50:12 BoogieIcfgContainer [2021-08-27 07:50:12,188 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-27 07:50:12,189 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-27 07:50:12,189 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-27 07:50:12,189 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-27 07:50:12,189 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 07:49:59" (3/4) ... [2021-08-27 07:50:12,192 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-08-27 07:50:12,197 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure reach_error [2021-08-27 07:50:12,197 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure KeSetEvent [2021-08-27 07:50:12,198 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure KbFilter_Complete [2021-08-27 07:50:12,198 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure stub_driver_init [2021-08-27 07:50:12,198 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure _BLAST_init [2021-08-27 07:50:12,198 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure errorFn [2021-08-27 07:50:12,198 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2021-08-27 07:50:12,198 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure IofCallDriver [2021-08-27 07:50:12,198 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure stubMoreProcessingRequired [2021-08-27 07:50:12,198 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2021-08-27 07:50:12,198 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure KeWaitForSingleObject [2021-08-27 07:50:12,198 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure IofCompleteRequest [2021-08-27 07:50:12,198 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure KbFilter_PnP [2021-08-27 07:50:12,212 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 32 nodes and edges [2021-08-27 07:50:12,213 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2021-08-27 07:50:12,213 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-08-27 07:50:12,214 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-27 07:50:12,294 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-27 07:50:12,295 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-27 07:50:12,296 INFO L168 Benchmark]: Toolchain (without parser) took 14324.07 ms. Allocated memory was 54.5 MB in the beginning and 211.8 MB in the end (delta: 157.3 MB). Free memory was 31.6 MB in the beginning and 84.3 MB in the end (delta: -52.7 MB). Peak memory consumption was 103.3 MB. Max. memory is 16.1 GB. [2021-08-27 07:50:12,297 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 54.5 MB. Free memory was 36.6 MB in the beginning and 36.6 MB in the end (delta: 37.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 07:50:12,297 INFO L168 Benchmark]: CACSL2BoogieTranslator took 339.65 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 31.4 MB in the beginning and 48.8 MB in the end (delta: -17.4 MB). Peak memory consumption was 7.3 MB. Max. memory is 16.1 GB. [2021-08-27 07:50:12,298 INFO L168 Benchmark]: Boogie Preprocessor took 79.84 ms. Allocated memory is still 67.1 MB. Free memory was 48.8 MB in the beginning and 46.4 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 07:50:12,298 INFO L168 Benchmark]: RCFGBuilder took 708.34 ms. Allocated memory is still 67.1 MB. Free memory was 46.4 MB in the beginning and 38.8 MB in the end (delta: 7.6 MB). Peak memory consumption was 23.3 MB. Max. memory is 16.1 GB. [2021-08-27 07:50:12,298 INFO L168 Benchmark]: TraceAbstraction took 13083.80 ms. Allocated memory was 67.1 MB in the beginning and 211.8 MB in the end (delta: 144.7 MB). Free memory was 38.1 MB in the beginning and 93.7 MB in the end (delta: -55.6 MB). Peak memory consumption was 89.0 MB. Max. memory is 16.1 GB. [2021-08-27 07:50:12,298 INFO L168 Benchmark]: Witness Printer took 105.85 ms. Allocated memory is still 211.8 MB. Free memory was 93.7 MB in the beginning and 84.3 MB in the end (delta: 9.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-08-27 07:50:12,300 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 54.5 MB. Free memory was 36.6 MB in the beginning and 36.6 MB in the end (delta: 37.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 339.65 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 31.4 MB in the beginning and 48.8 MB in the end (delta: -17.4 MB). Peak memory consumption was 7.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 79.84 ms. Allocated memory is still 67.1 MB. Free memory was 48.8 MB in the beginning and 46.4 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 708.34 ms. Allocated memory is still 67.1 MB. Free memory was 46.4 MB in the beginning and 38.8 MB in the end (delta: 7.6 MB). Peak memory consumption was 23.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 13083.80 ms. Allocated memory was 67.1 MB in the beginning and 211.8 MB in the end (delta: 144.7 MB). Free memory was 38.1 MB in the beginning and 93.7 MB in the end (delta: -55.6 MB). Peak memory consumption was 89.0 MB. Max. memory is 16.1 GB. * Witness Printer took 105.85 ms. Allocated memory is still 211.8 MB. Free memory was 93.7 MB in the beginning and 84.3 MB in the end (delta: 9.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 581]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 288]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 14 procedures, 155 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 13030.5ms, OverallIterations: 19, TraceHistogramMax: 1, EmptinessCheckTime: 42.3ms, AutomataDifference: 8576.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 16.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 2398 SDtfs, 3902 SDslu, 2776 SDs, 0 SdLazy, 5810 SolverSat, 1081 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5116.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 362 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 186 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 4136.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=217occurred in iteration=4, InterpolantAutomatonStates: 157, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 172.4ms AutomataMinimizationTime, 19 MinimizatonAttempts, 208 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 96.4ms SsaConstructionTime, 311.4ms SatisfiabilityAnalysisTime, 3563.0ms InterpolantComputationTime, 934 NumberOfCodeBlocks, 934 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 915 ConstructedInterpolants, 0 QuantifiedInterpolants, 4772 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 19 InterpolantComputations, 19 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-08-27 07:50:12,343 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...