./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/ntdrivers-simplified/floppy_simpl3.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 5fbdf5bf Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/ntdrivers-simplified/floppy_simpl3.cil-2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9caca1067e52a4490439beb955df6129aef4eea8 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5fbdf5b [2021-08-30 19:09:46,251 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-30 19:09:46,253 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-30 19:09:46,295 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-30 19:09:46,295 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-30 19:09:46,300 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-30 19:09:46,301 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-30 19:09:46,307 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-30 19:09:46,310 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-30 19:09:46,316 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-30 19:09:46,317 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-30 19:09:46,321 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-30 19:09:46,322 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-30 19:09:46,325 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-30 19:09:46,326 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-30 19:09:46,329 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-30 19:09:46,330 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-30 19:09:46,331 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-30 19:09:46,333 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-30 19:09:46,339 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-30 19:09:46,341 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-30 19:09:46,342 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-30 19:09:46,344 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-30 19:09:46,345 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-30 19:09:46,347 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-30 19:09:46,347 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-30 19:09:46,348 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-30 19:09:46,350 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-30 19:09:46,350 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-30 19:09:46,351 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-30 19:09:46,351 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-30 19:09:46,352 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-30 19:09:46,354 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-30 19:09:46,355 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-30 19:09:46,356 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-30 19:09:46,356 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-30 19:09:46,357 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-30 19:09:46,357 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-30 19:09:46,357 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-30 19:09:46,359 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-30 19:09:46,359 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-30 19:09:46,360 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-08-30 19:09:46,399 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-30 19:09:46,399 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-30 19:09:46,400 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-30 19:09:46,401 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-30 19:09:46,402 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-30 19:09:46,403 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-30 19:09:46,403 INFO L138 SettingsManager]: * Use SBE=true [2021-08-30 19:09:46,403 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-30 19:09:46,403 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-30 19:09:46,403 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-30 19:09:46,404 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-30 19:09:46,405 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-30 19:09:46,405 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-30 19:09:46,405 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-08-30 19:09:46,405 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-08-30 19:09:46,405 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-08-30 19:09:46,405 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-30 19:09:46,406 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-08-30 19:09:46,406 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-30 19:09:46,406 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-30 19:09:46,406 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-30 19:09:46,406 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-30 19:09:46,407 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-30 19:09:46,407 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-30 19:09:46,407 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-30 19:09:46,407 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-30 19:09:46,407 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-30 19:09:46,408 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-30 19:09:46,408 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-30 19:09:46,408 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9caca1067e52a4490439beb955df6129aef4eea8 [2021-08-30 19:09:46,708 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-30 19:09:46,737 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-30 19:09:46,740 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-30 19:09:46,741 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-30 19:09:46,742 INFO L275 PluginConnector]: CDTParser initialized [2021-08-30 19:09:46,743 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ntdrivers-simplified/floppy_simpl3.cil-2.c [2021-08-30 19:09:46,809 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c6a908eb4/98dafddf9c3e4641b50094ba43f74168/FLAGafa3482e9 [2021-08-30 19:09:47,371 INFO L306 CDTParser]: Found 1 translation units. [2021-08-30 19:09:47,372 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ntdrivers-simplified/floppy_simpl3.cil-2.c [2021-08-30 19:09:47,383 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c6a908eb4/98dafddf9c3e4641b50094ba43f74168/FLAGafa3482e9 [2021-08-30 19:09:47,794 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c6a908eb4/98dafddf9c3e4641b50094ba43f74168 [2021-08-30 19:09:47,797 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-30 19:09:47,799 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-30 19:09:47,802 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-30 19:09:47,803 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-30 19:09:47,806 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-30 19:09:47,806 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 07:09:47" (1/1) ... [2021-08-30 19:09:47,807 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58d778f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:09:47, skipping insertion in model container [2021-08-30 19:09:47,807 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 07:09:47" (1/1) ... [2021-08-30 19:09:47,814 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-30 19:09:47,863 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-30 19:09:47,975 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/floppy_simpl3.cil-2.c[2713,2726] [2021-08-30 19:09:48,084 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-30 19:09:48,099 INFO L203 MainTranslator]: Completed pre-run [2021-08-30 19:09:48,130 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/floppy_simpl3.cil-2.c[2713,2726] [2021-08-30 19:09:48,178 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-30 19:09:48,197 INFO L208 MainTranslator]: Completed translation [2021-08-30 19:09:48,203 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:09:48 WrapperNode [2021-08-30 19:09:48,203 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-30 19:09:48,206 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-30 19:09:48,206 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-30 19:09:48,206 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-30 19:09:48,215 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:09:48" (1/1) ... [2021-08-30 19:09:48,216 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:09:48" (1/1) ... [2021-08-30 19:09:48,240 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:09:48" (1/1) ... [2021-08-30 19:09:48,246 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:09:48" (1/1) ... [2021-08-30 19:09:48,270 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:09:48" (1/1) ... [2021-08-30 19:09:48,298 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:09:48" (1/1) ... [2021-08-30 19:09:48,302 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:09:48" (1/1) ... [2021-08-30 19:09:48,308 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-30 19:09:48,331 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-30 19:09:48,331 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-30 19:09:48,332 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-30 19:09:48,333 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:09:48" (1/1) ... [2021-08-30 19:09:48,343 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-30 19:09:48,354 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-30 19:09:48,370 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) [2021-08-30 19:09:48,388 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 [2021-08-30 19:09:48,406 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-08-30 19:09:48,407 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-30 19:09:48,407 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-08-30 19:09:48,408 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2021-08-30 19:09:48,408 INFO L138 BoogieDeclarations]: Found implementation of procedure _BLAST_init [2021-08-30 19:09:48,409 INFO L138 BoogieDeclarations]: Found implementation of procedure FlAcpiConfigureFloppy [2021-08-30 19:09:48,409 INFO L138 BoogieDeclarations]: Found implementation of procedure FlQueueIrpToThread [2021-08-30 19:09:48,409 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyPnp [2021-08-30 19:09:48,409 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyStartDevice [2021-08-30 19:09:48,410 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyPnpComplete [2021-08-30 19:09:48,410 INFO L138 BoogieDeclarations]: Found implementation of procedure FlFdcDeviceIo [2021-08-30 19:09:48,410 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyProcessQueuedRequests [2021-08-30 19:09:48,410 INFO L138 BoogieDeclarations]: Found implementation of procedure stub_driver_init [2021-08-30 19:09:48,410 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-08-30 19:09:48,410 INFO L138 BoogieDeclarations]: Found implementation of procedure IoBuildDeviceIoControlRequest [2021-08-30 19:09:48,410 INFO L138 BoogieDeclarations]: Found implementation of procedure IoDeleteSymbolicLink [2021-08-30 19:09:48,411 INFO L138 BoogieDeclarations]: Found implementation of procedure IoQueryDeviceDescription [2021-08-30 19:09:48,411 INFO L138 BoogieDeclarations]: Found implementation of procedure IoRegisterDeviceInterface [2021-08-30 19:09:48,411 INFO L138 BoogieDeclarations]: Found implementation of procedure IoSetDeviceInterfaceState [2021-08-30 19:09:48,411 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2021-08-30 19:09:48,411 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2021-08-30 19:09:48,411 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2021-08-30 19:09:48,411 INFO L138 BoogieDeclarations]: Found implementation of procedure KeSetEvent [2021-08-30 19:09:48,412 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2021-08-30 19:09:48,412 INFO L138 BoogieDeclarations]: Found implementation of procedure ObReferenceObjectByHandle [2021-08-30 19:09:48,412 INFO L138 BoogieDeclarations]: Found implementation of procedure PsCreateSystemThread [2021-08-30 19:09:48,412 INFO L138 BoogieDeclarations]: Found implementation of procedure ZwClose [2021-08-30 19:09:48,412 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyCreateClose [2021-08-30 19:09:48,412 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-08-30 19:09:48,413 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-08-30 19:09:48,413 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-08-30 19:09:48,413 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-30 19:09:48,413 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2021-08-30 19:09:48,413 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-08-30 19:09:48,413 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2021-08-30 19:09:48,414 INFO L130 BoogieDeclarations]: Found specification of procedure FlAcpiConfigureFloppy [2021-08-30 19:09:48,414 INFO L130 BoogieDeclarations]: Found specification of procedure FlQueueIrpToThread [2021-08-30 19:09:48,414 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyPnp [2021-08-30 19:09:48,414 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyStartDevice [2021-08-30 19:09:48,414 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyPnpComplete [2021-08-30 19:09:48,414 INFO L130 BoogieDeclarations]: Found specification of procedure FlFdcDeviceIo [2021-08-30 19:09:48,414 INFO L130 BoogieDeclarations]: Found specification of procedure IoBuildDeviceIoControlRequest [2021-08-30 19:09:48,415 INFO L130 BoogieDeclarations]: Found specification of procedure IoDeleteSymbolicLink [2021-08-30 19:09:48,415 INFO L130 BoogieDeclarations]: Found specification of procedure IoQueryDeviceDescription [2021-08-30 19:09:48,415 INFO L130 BoogieDeclarations]: Found specification of procedure IoRegisterDeviceInterface [2021-08-30 19:09:48,415 INFO L130 BoogieDeclarations]: Found specification of procedure IoSetDeviceInterfaceState [2021-08-30 19:09:48,416 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2021-08-30 19:09:48,416 INFO L130 BoogieDeclarations]: Found specification of procedure KeSetEvent [2021-08-30 19:09:48,416 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2021-08-30 19:09:48,416 INFO L130 BoogieDeclarations]: Found specification of procedure ObReferenceObjectByHandle [2021-08-30 19:09:48,416 INFO L130 BoogieDeclarations]: Found specification of procedure PsCreateSystemThread [2021-08-30 19:09:48,416 INFO L130 BoogieDeclarations]: Found specification of procedure ZwClose [2021-08-30 19:09:48,417 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2021-08-30 19:09:48,417 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2021-08-30 19:09:48,417 INFO L130 BoogieDeclarations]: Found specification of procedure _BLAST_init [2021-08-30 19:09:48,417 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyProcessQueuedRequests [2021-08-30 19:09:48,417 INFO L130 BoogieDeclarations]: Found specification of procedure stub_driver_init [2021-08-30 19:09:48,417 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-08-30 19:09:48,418 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2021-08-30 19:09:48,418 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyCreateClose [2021-08-30 19:09:48,418 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-08-30 19:09:48,418 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-30 19:09:48,418 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-30 19:09:48,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-30 19:09:48,419 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-08-30 19:09:48,419 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-30 19:09:48,672 WARN L804 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-08-30 19:09:48,688 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2021-08-30 19:09:48,688 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2021-08-30 19:09:48,692 WARN L804 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-08-30 19:09:48,694 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2021-08-30 19:09:48,694 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2021-08-30 19:09:48,698 WARN L804 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-08-30 19:09:48,755 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##21: assume !false; [2021-08-30 19:09:48,756 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##20: assume false; [2021-08-30 19:09:48,757 WARN L804 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-08-30 19:09:48,774 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume false; [2021-08-30 19:09:48,775 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume !false; [2021-08-30 19:09:48,779 WARN L804 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-08-30 19:09:48,782 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2021-08-30 19:09:48,783 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2021-08-30 19:09:48,812 WARN L804 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-08-30 19:09:48,823 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2021-08-30 19:09:48,824 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2021-08-30 19:09:48,825 WARN L804 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-08-30 19:09:48,831 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2021-08-30 19:09:48,832 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2021-08-30 19:09:48,833 WARN L804 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-08-30 19:09:48,838 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2021-08-30 19:09:48,845 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2021-08-30 19:09:48,855 WARN L804 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-08-30 19:09:48,861 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2021-08-30 19:09:48,861 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2021-08-30 19:09:48,874 WARN L804 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-08-30 19:09:48,875 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2021-08-30 19:09:48,875 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2021-08-30 19:09:48,875 WARN L804 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-08-30 19:09:48,876 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2021-08-30 19:09:48,876 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2021-08-30 19:09:48,877 WARN L804 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-08-30 19:09:48,878 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2021-08-30 19:09:48,878 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2021-08-30 19:09:48,906 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-30 19:09:48,906 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-08-30 19:09:48,908 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 07:09:48 BoogieIcfgContainer [2021-08-30 19:09:48,908 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-30 19:09:48,910 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-30 19:09:48,910 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-30 19:09:48,912 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-30 19:09:48,912 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 07:09:47" (1/3) ... [2021-08-30 19:09:48,913 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1dccdfc2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 07:09:48, skipping insertion in model container [2021-08-30 19:09:48,913 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:09:48" (2/3) ... [2021-08-30 19:09:48,914 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1dccdfc2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 07:09:48, skipping insertion in model container [2021-08-30 19:09:48,914 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 07:09:48" (3/3) ... [2021-08-30 19:09:48,915 INFO L111 eAbstractionObserver]: Analyzing ICFG floppy_simpl3.cil-2.c [2021-08-30 19:09:48,919 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-30 19:09:48,919 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-08-30 19:09:48,951 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-30 19:09:48,957 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 [2021-08-30 19:09:48,958 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-08-30 19:09:48,978 INFO L276 IsEmpty]: Start isEmpty. Operand has 305 states, 221 states have (on average 1.4253393665158371) internal successors, (315), 244 states have internal predecessors, (315), 56 states have call successors, (56), 24 states have call predecessors, (56), 24 states have return successors, (56), 51 states have call predecessors, (56), 56 states have call successors, (56) [2021-08-30 19:09:48,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-08-30 19:09:48,985 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 19:09:48,985 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 19:09:48,986 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ENSURES_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-08-30 19:09:48,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 19:09:48,990 INFO L82 PathProgramCache]: Analyzing trace with hash -2120787036, now seen corresponding path program 1 times [2021-08-30 19:09:48,997 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 19:09:48,998 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275712386] [2021-08-30 19:09:48,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:09:48,999 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 19:09:49,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:09:49,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:09:49,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:09:49,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-08-30 19:09:49,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:09:49,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 19:09:49,455 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 19:09:49,455 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275712386] [2021-08-30 19:09:49,455 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275712386] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 19:09:49,456 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 19:09:49,456 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-30 19:09:49,457 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194016690] [2021-08-30 19:09:49,461 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-30 19:09:49,461 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 19:09:49,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-30 19:09:49,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-30 19:09:49,486 INFO L87 Difference]: Start difference. First operand has 305 states, 221 states have (on average 1.4253393665158371) internal successors, (315), 244 states have internal predecessors, (315), 56 states have call successors, (56), 24 states have call predecessors, (56), 24 states have return successors, (56), 51 states have call predecessors, (56), 56 states have call successors, (56) Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-08-30 19:09:50,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 19:09:50,423 INFO L93 Difference]: Finished difference Result 329 states and 449 transitions. [2021-08-30 19:09:50,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-30 19:09:50,425 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 [2021-08-30 19:09:50,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 19:09:50,436 INFO L225 Difference]: With dead ends: 329 [2021-08-30 19:09:50,437 INFO L226 Difference]: Without dead ends: 322 [2021-08-30 19:09:50,449 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 162.69ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-30 19:09:50,454 INFO L928 BasicCegarLoop]: 97 mSDtfsCounter, 232 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 599 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 689.45ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 721 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 17.96ms SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 599 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 815.23ms IncrementalHoareTripleChecker+Time [2021-08-30 19:09:50,461 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [235 Valid, 120 Invalid, 721 Unknown, 0 Unchecked, 17.96ms Time], IncrementalHoareTripleChecker [122 Valid, 599 Invalid, 0 Unknown, 0 Unchecked, 815.23ms Time] [2021-08-30 19:09:50,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2021-08-30 19:09:50,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 292. [2021-08-30 19:09:50,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 213 states have (on average 1.375586854460094) internal successors, (293), 233 states have internal predecessors, (293), 56 states have call successors, (56), 24 states have call predecessors, (56), 22 states have return successors, (37), 36 states have call predecessors, (37), 37 states have call successors, (37) [2021-08-30 19:09:50,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 386 transitions. [2021-08-30 19:09:50,531 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 386 transitions. Word has length 15 [2021-08-30 19:09:50,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 19:09:50,532 INFO L470 AbstractCegarLoop]: Abstraction has 292 states and 386 transitions. [2021-08-30 19:09:50,532 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) [2021-08-30 19:09:50,532 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 386 transitions. [2021-08-30 19:09:50,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-08-30 19:09:50,533 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 19:09:50,533 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 19:09:50,533 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-30 19:09:50,534 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-08-30 19:09:50,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 19:09:50,534 INFO L82 PathProgramCache]: Analyzing trace with hash 1263023814, now seen corresponding path program 1 times [2021-08-30 19:09:50,535 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 19:09:50,535 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234806576] [2021-08-30 19:09:50,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:09:50,535 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 19:09:50,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:09:50,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:09:50,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:09:50,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-08-30 19:09:50,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:09:50,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 19:09:50,783 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 19:09:50,783 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234806576] [2021-08-30 19:09:50,784 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234806576] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 19:09:50,784 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 19:09:50,784 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-30 19:09:50,784 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994896044] [2021-08-30 19:09:50,786 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-30 19:09:50,786 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 19:09:50,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-30 19:09:50,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-08-30 19:09:50,787 INFO L87 Difference]: Start difference. First operand 292 states and 386 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 3 states have internal predecessors, (14), 3 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-08-30 19:09:51,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 19:09:51,718 INFO L93 Difference]: Finished difference Result 322 states and 432 transitions. [2021-08-30 19:09:51,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-30 19:09:51,719 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 [2021-08-30 19:09:51,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 19:09:51,726 INFO L225 Difference]: With dead ends: 322 [2021-08-30 19:09:51,726 INFO L226 Difference]: Without dead ends: 322 [2021-08-30 19:09:51,731 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 122.15ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-08-30 19:09:51,733 INFO L928 BasicCegarLoop]: 96 mSDtfsCounter, 237 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 870 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 721.93ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 992 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.45ms SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 870 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 863.21ms IncrementalHoareTripleChecker+Time [2021-08-30 19:09:51,734 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [242 Valid, 211 Invalid, 992 Unknown, 0 Unchecked, 12.45ms Time], IncrementalHoareTripleChecker [122 Valid, 870 Invalid, 0 Unknown, 0 Unchecked, 863.21ms Time] [2021-08-30 19:09:51,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2021-08-30 19:09:51,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 292. [2021-08-30 19:09:51,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 213 states have (on average 1.3708920187793427) internal successors, (292), 233 states have internal predecessors, (292), 56 states have call successors, (56), 24 states have call predecessors, (56), 22 states have return successors, (37), 36 states have call predecessors, (37), 37 states have call successors, (37) [2021-08-30 19:09:51,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 385 transitions. [2021-08-30 19:09:51,755 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 385 transitions. Word has length 20 [2021-08-30 19:09:51,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 19:09:51,756 INFO L470 AbstractCegarLoop]: Abstraction has 292 states and 385 transitions. [2021-08-30 19:09:51,756 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) [2021-08-30 19:09:51,756 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 385 transitions. [2021-08-30 19:09:51,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-08-30 19:09:51,757 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 19:09:51,757 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 19:09:51,757 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-30 19:09:51,757 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-08-30 19:09:51,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 19:09:51,758 INFO L82 PathProgramCache]: Analyzing trace with hash 1377431699, now seen corresponding path program 1 times [2021-08-30 19:09:51,758 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 19:09:51,759 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955477832] [2021-08-30 19:09:51,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:09:51,759 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 19:09:51,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:09:51,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:09:51,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:09:51,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-08-30 19:09:51,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:09:51,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-08-30 19:09:51,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:09:51,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 19:09:51,967 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 19:09:51,968 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955477832] [2021-08-30 19:09:51,968 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955477832] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 19:09:51,968 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 19:09:51,969 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-30 19:09:51,969 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932493812] [2021-08-30 19:09:51,971 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-30 19:09:51,971 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 19:09:51,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-30 19:09:51,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-08-30 19:09:51,972 INFO L87 Difference]: Start difference. First operand 292 states and 385 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 3 states have internal predecessors, (18), 3 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-08-30 19:09:53,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 19:09:53,799 INFO L93 Difference]: Finished difference Result 477 states and 636 transitions. [2021-08-30 19:09:53,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-30 19:09:53,800 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 3 states have internal predecessors, (18), 3 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 28 [2021-08-30 19:09:53,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 19:09:53,803 INFO L225 Difference]: With dead ends: 477 [2021-08-30 19:09:53,803 INFO L226 Difference]: Without dead ends: 476 [2021-08-30 19:09:53,803 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 219.20ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-08-30 19:09:53,804 INFO L928 BasicCegarLoop]: 125 mSDtfsCounter, 449 mSDsluCounter, 268 mSDsCounter, 0 mSdLazyCounter, 1740 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1412.72ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 455 SdHoareTripleChecker+Valid, 205 SdHoareTripleChecker+Invalid, 1845 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 23.36ms SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 1740 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1640.38ms IncrementalHoareTripleChecker+Time [2021-08-30 19:09:53,805 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [455 Valid, 205 Invalid, 1845 Unknown, 0 Unchecked, 23.36ms Time], IncrementalHoareTripleChecker [105 Valid, 1740 Invalid, 0 Unknown, 0 Unchecked, 1640.38ms Time] [2021-08-30 19:09:53,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476 states. [2021-08-30 19:09:53,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476 to 429. [2021-08-30 19:09:53,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 429 states, 328 states have (on average 1.3140243902439024) internal successors, (431), 334 states have internal predecessors, (431), 65 states have call successors, (65), 37 states have call predecessors, (65), 35 states have return successors, (74), 59 states have call predecessors, (74), 54 states have call successors, (74) [2021-08-30 19:09:53,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 570 transitions. [2021-08-30 19:09:53,829 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 570 transitions. Word has length 28 [2021-08-30 19:09:53,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 19:09:53,829 INFO L470 AbstractCegarLoop]: Abstraction has 429 states and 570 transitions. [2021-08-30 19:09:53,829 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 3 states have internal predecessors, (18), 3 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-08-30 19:09:53,830 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 570 transitions. [2021-08-30 19:09:53,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-08-30 19:09:53,830 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 19:09:53,831 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 19:09:53,831 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-30 19:09:53,831 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-08-30 19:09:53,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 19:09:53,832 INFO L82 PathProgramCache]: Analyzing trace with hash 1586729981, now seen corresponding path program 1 times [2021-08-30 19:09:53,832 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 19:09:53,832 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307325348] [2021-08-30 19:09:53,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:09:53,833 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 19:09:53,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:09:53,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:09:53,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:09:53,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-08-30 19:09:53,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:09:54,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-08-30 19:09:54,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:09:54,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 19:09:54,019 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 19:09:54,019 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307325348] [2021-08-30 19:09:54,020 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307325348] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 19:09:54,020 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 19:09:54,020 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-30 19:09:54,020 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239664665] [2021-08-30 19:09:54,021 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-30 19:09:54,021 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 19:09:54,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-30 19:09:54,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-08-30 19:09:54,022 INFO L87 Difference]: Start difference. First operand 429 states and 570 transitions. Second operand has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 3 states have internal predecessors, (20), 3 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-08-30 19:09:55,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 19:09:55,095 INFO L93 Difference]: Finished difference Result 675 states and 900 transitions. [2021-08-30 19:09:55,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-30 19:09:55,096 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 3 states have internal predecessors, (20), 3 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 30 [2021-08-30 19:09:55,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 19:09:55,099 INFO L225 Difference]: With dead ends: 675 [2021-08-30 19:09:55,099 INFO L226 Difference]: Without dead ends: 675 [2021-08-30 19:09:55,099 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 196.99ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-08-30 19:09:55,100 INFO L928 BasicCegarLoop]: 87 mSDtfsCounter, 770 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 786 mSolverCounterSat, 251 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 780.39ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 777 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 1037 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.90ms SdHoareTripleChecker+Time, 251 IncrementalHoareTripleChecker+Valid, 786 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 927.51ms IncrementalHoareTripleChecker+Time [2021-08-30 19:09:55,100 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [777 Valid, 125 Invalid, 1037 Unknown, 0 Unchecked, 9.90ms Time], IncrementalHoareTripleChecker [251 Valid, 786 Invalid, 0 Unknown, 0 Unchecked, 927.51ms Time] [2021-08-30 19:09:55,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 675 states. [2021-08-30 19:09:55,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 675 to 632. [2021-08-30 19:09:55,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 632 states, 493 states have (on average 1.3144016227180528) internal successors, (648), 497 states have internal predecessors, (648), 85 states have call successors, (85), 55 states have call predecessors, (85), 53 states have return successors, (112), 81 states have call predecessors, (112), 76 states have call successors, (112) [2021-08-30 19:09:55,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 632 states to 632 states and 845 transitions. [2021-08-30 19:09:55,136 INFO L78 Accepts]: Start accepts. Automaton has 632 states and 845 transitions. Word has length 30 [2021-08-30 19:09:55,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 19:09:55,136 INFO L470 AbstractCegarLoop]: Abstraction has 632 states and 845 transitions. [2021-08-30 19:09:55,136 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 3 states have internal predecessors, (20), 3 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-08-30 19:09:55,137 INFO L276 IsEmpty]: Start isEmpty. Operand 632 states and 845 transitions. [2021-08-30 19:09:55,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-08-30 19:09:55,138 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 19:09:55,138 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 19:09:55,138 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-30 19:09:55,138 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-08-30 19:09:55,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 19:09:55,139 INFO L82 PathProgramCache]: Analyzing trace with hash -962074547, now seen corresponding path program 1 times [2021-08-30 19:09:55,139 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 19:09:55,139 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606239987] [2021-08-30 19:09:55,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:09:55,140 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 19:09:55,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:09:55,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:09:55,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:09:55,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-08-30 19:09:55,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:09:55,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-08-30 19:09:55,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:09:55,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 19:09:55,310 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 19:09:55,310 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606239987] [2021-08-30 19:09:55,310 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606239987] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 19:09:55,310 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 19:09:55,310 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-30 19:09:55,311 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854399053] [2021-08-30 19:09:55,311 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-30 19:09:55,311 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 19:09:55,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-30 19:09:55,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-08-30 19:09:55,312 INFO L87 Difference]: Start difference. First operand 632 states and 845 transitions. Second operand has 6 states, 6 states have (on average 4.0) internal successors, (24), 3 states have internal predecessors, (24), 3 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-08-30 19:09:56,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 19:09:56,350 INFO L93 Difference]: Finished difference Result 721 states and 953 transitions. [2021-08-30 19:09:56,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-30 19:09:56,352 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 3 states have internal predecessors, (24), 3 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 34 [2021-08-30 19:09:56,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 19:09:56,356 INFO L225 Difference]: With dead ends: 721 [2021-08-30 19:09:56,356 INFO L226 Difference]: Without dead ends: 721 [2021-08-30 19:09:56,356 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 209.14ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-08-30 19:09:56,357 INFO L928 BasicCegarLoop]: 68 mSDtfsCounter, 586 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 890 mSolverCounterSat, 153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 765.75ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 593 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 1043 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.27ms SdHoareTripleChecker+Time, 153 IncrementalHoareTripleChecker+Valid, 890 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 894.42ms IncrementalHoareTripleChecker+Time [2021-08-30 19:09:56,357 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [593 Valid, 86 Invalid, 1043 Unknown, 0 Unchecked, 8.27ms Time], IncrementalHoareTripleChecker [153 Valid, 890 Invalid, 0 Unknown, 0 Unchecked, 894.42ms Time] [2021-08-30 19:09:56,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 721 states. [2021-08-30 19:09:56,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 721 to 670. [2021-08-30 19:09:56,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 670 states, 525 states have (on average 1.3161904761904761) internal successors, (691), 535 states have internal predecessors, (691), 86 states have call successors, (86), 57 states have call predecessors, (86), 58 states have return successors, (117), 80 states have call predecessors, (117), 78 states have call successors, (117) [2021-08-30 19:09:56,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 670 states to 670 states and 894 transitions. [2021-08-30 19:09:56,397 INFO L78 Accepts]: Start accepts. Automaton has 670 states and 894 transitions. Word has length 34 [2021-08-30 19:09:56,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 19:09:56,397 INFO L470 AbstractCegarLoop]: Abstraction has 670 states and 894 transitions. [2021-08-30 19:09:56,398 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 3 states have internal predecessors, (24), 3 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-08-30 19:09:56,398 INFO L276 IsEmpty]: Start isEmpty. Operand 670 states and 894 transitions. [2021-08-30 19:09:56,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-08-30 19:09:56,405 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 19:09:56,405 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 19:09:56,406 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-30 19:09:56,406 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-08-30 19:09:56,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 19:09:56,407 INFO L82 PathProgramCache]: Analyzing trace with hash 82742685, now seen corresponding path program 1 times [2021-08-30 19:09:56,407 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 19:09:56,407 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407950904] [2021-08-30 19:09:56,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:09:56,407 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 19:09:56,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:09:56,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:09:56,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:09:56,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-08-30 19:09:56,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:09:56,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-08-30 19:09:56,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:09:56,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-08-30 19:09:56,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:09:56,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 19:09:56,632 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 19:09:56,633 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407950904] [2021-08-30 19:09:56,634 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407950904] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 19:09:56,634 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 19:09:56,635 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-08-30 19:09:56,635 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85618769] [2021-08-30 19:09:56,636 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-08-30 19:09:56,636 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 19:09:56,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-30 19:09:56,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-08-30 19:09:56,637 INFO L87 Difference]: Start difference. First operand 670 states and 894 transitions. Second operand has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-08-30 19:09:57,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 19:09:57,913 INFO L93 Difference]: Finished difference Result 696 states and 924 transitions. [2021-08-30 19:09:57,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-30 19:09:57,913 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 41 [2021-08-30 19:09:57,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 19:09:57,917 INFO L225 Difference]: With dead ends: 696 [2021-08-30 19:09:57,918 INFO L226 Difference]: Without dead ends: 696 [2021-08-30 19:09:57,918 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 179.06ms TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-08-30 19:09:57,919 INFO L928 BasicCegarLoop]: 68 mSDtfsCounter, 307 mSDsluCounter, 538 mSDsCounter, 0 mSdLazyCounter, 1898 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 931.88ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 321 SdHoareTripleChecker+Valid, 287 SdHoareTripleChecker+Invalid, 2011 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.57ms SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 1898 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1151.48ms IncrementalHoareTripleChecker+Time [2021-08-30 19:09:57,919 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [321 Valid, 287 Invalid, 2011 Unknown, 0 Unchecked, 12.57ms Time], IncrementalHoareTripleChecker [113 Valid, 1898 Invalid, 0 Unknown, 0 Unchecked, 1151.48ms Time] [2021-08-30 19:09:57,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696 states. [2021-08-30 19:09:57,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696 to 674. [2021-08-30 19:09:57,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 674 states, 528 states have (on average 1.3143939393939394) internal successors, (694), 538 states have internal predecessors, (694), 86 states have call successors, (86), 57 states have call predecessors, (86), 59 states have return successors, (118), 81 states have call predecessors, (118), 78 states have call successors, (118) [2021-08-30 19:09:57,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 674 states to 674 states and 898 transitions. [2021-08-30 19:09:57,940 INFO L78 Accepts]: Start accepts. Automaton has 674 states and 898 transitions. Word has length 41 [2021-08-30 19:09:57,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 19:09:57,941 INFO L470 AbstractCegarLoop]: Abstraction has 674 states and 898 transitions. [2021-08-30 19:09:57,941 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-08-30 19:09:57,941 INFO L276 IsEmpty]: Start isEmpty. Operand 674 states and 898 transitions. [2021-08-30 19:09:57,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-08-30 19:09:57,942 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 19:09:57,942 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 19:09:57,942 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-08-30 19:09:57,942 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-08-30 19:09:57,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 19:09:57,943 INFO L82 PathProgramCache]: Analyzing trace with hash -127535261, now seen corresponding path program 1 times [2021-08-30 19:09:57,943 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 19:09:57,943 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749479017] [2021-08-30 19:09:57,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:09:57,944 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 19:09:57,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:09:58,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:09:58,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:09:58,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-08-30 19:09:58,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:09:58,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-08-30 19:09:58,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:09:58,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 19:09:58,099 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 19:09:58,099 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749479017] [2021-08-30 19:09:58,099 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749479017] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 19:09:58,099 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 19:09:58,099 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-30 19:09:58,099 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924619357] [2021-08-30 19:09:58,100 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-30 19:09:58,100 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 19:09:58,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-30 19:09:58,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-08-30 19:09:58,101 INFO L87 Difference]: Start difference. First operand 674 states and 898 transitions. Second operand has 6 states, 6 states have (on average 5.0) internal successors, (30), 3 states have internal predecessors, (30), 3 states have call successors, (7), 6 states have call predecessors, (7), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-08-30 19:09:58,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 19:09:58,890 INFO L93 Difference]: Finished difference Result 698 states and 928 transitions. [2021-08-30 19:09:58,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-30 19:09:58,891 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.0) internal successors, (30), 3 states have internal predecessors, (30), 3 states have call successors, (7), 6 states have call predecessors, (7), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 40 [2021-08-30 19:09:58,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 19:09:58,895 INFO L225 Difference]: With dead ends: 698 [2021-08-30 19:09:58,896 INFO L226 Difference]: Without dead ends: 698 [2021-08-30 19:09:58,896 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 151.10ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-08-30 19:09:58,899 INFO L928 BasicCegarLoop]: 85 mSDtfsCounter, 410 mSDsluCounter, 223 mSDsCounter, 0 mSdLazyCounter, 871 mSolverCounterSat, 153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 585.77ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 413 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 1024 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.13ms SdHoareTripleChecker+Time, 153 IncrementalHoareTripleChecker+Valid, 871 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 699.57ms IncrementalHoareTripleChecker+Time [2021-08-30 19:09:58,899 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [413 Valid, 145 Invalid, 1024 Unknown, 0 Unchecked, 6.13ms Time], IncrementalHoareTripleChecker [153 Valid, 871 Invalid, 0 Unknown, 0 Unchecked, 699.57ms Time] [2021-08-30 19:09:58,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 698 states. [2021-08-30 19:09:58,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 698 to 685. [2021-08-30 19:09:58,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 685 states, 539 states have (on average 1.313543599257885) internal successors, (708), 548 states have internal predecessors, (708), 86 states have call successors, (86), 58 states have call predecessors, (86), 59 states have return successors, (118), 81 states have call predecessors, (118), 78 states have call successors, (118) [2021-08-30 19:09:58,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 685 states to 685 states and 912 transitions. [2021-08-30 19:09:58,923 INFO L78 Accepts]: Start accepts. Automaton has 685 states and 912 transitions. Word has length 40 [2021-08-30 19:09:58,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 19:09:58,924 INFO L470 AbstractCegarLoop]: Abstraction has 685 states and 912 transitions. [2021-08-30 19:09:58,924 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.0) internal successors, (30), 3 states have internal predecessors, (30), 3 states have call successors, (7), 6 states have call predecessors, (7), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-08-30 19:09:58,924 INFO L276 IsEmpty]: Start isEmpty. Operand 685 states and 912 transitions. [2021-08-30 19:09:58,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-08-30 19:09:58,925 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 19:09:58,925 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 19:09:58,925 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-08-30 19:09:58,925 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-08-30 19:09:58,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 19:09:58,927 INFO L82 PathProgramCache]: Analyzing trace with hash -1411662583, now seen corresponding path program 1 times [2021-08-30 19:09:58,927 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 19:09:58,927 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156582563] [2021-08-30 19:09:58,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:09:58,927 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 19:09:58,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:09:59,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:09:59,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:09:59,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-08-30 19:09:59,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:09:59,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-08-30 19:09:59,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:09:59,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-08-30 19:09:59,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:09:59,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-08-30 19:09:59,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:09:59,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 19:09:59,152 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 19:09:59,152 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156582563] [2021-08-30 19:09:59,153 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156582563] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 19:09:59,153 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 19:09:59,153 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-30 19:09:59,153 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832270116] [2021-08-30 19:09:59,153 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-30 19:09:59,153 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 19:09:59,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-30 19:09:59,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-08-30 19:09:59,155 INFO L87 Difference]: Start difference. First operand 685 states and 912 transitions. Second operand has 8 states, 8 states have (on average 3.625) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2021-08-30 19:10:00,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 19:10:00,332 INFO L93 Difference]: Finished difference Result 747 states and 988 transitions. [2021-08-30 19:10:00,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-30 19:10:00,332 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.625) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 41 [2021-08-30 19:10:00,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 19:10:00,336 INFO L225 Difference]: With dead ends: 747 [2021-08-30 19:10:00,336 INFO L226 Difference]: Without dead ends: 747 [2021-08-30 19:10:00,336 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 206.95ms TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-08-30 19:10:00,337 INFO L928 BasicCegarLoop]: 78 mSDtfsCounter, 203 mSDsluCounter, 368 mSDsCounter, 0 mSdLazyCounter, 1549 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 865.39ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 1614 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.37ms SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 1549 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1058.16ms IncrementalHoareTripleChecker+Time [2021-08-30 19:10:00,337 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [206 Valid, 163 Invalid, 1614 Unknown, 0 Unchecked, 9.37ms Time], IncrementalHoareTripleChecker [65 Valid, 1549 Invalid, 0 Unknown, 0 Unchecked, 1058.16ms Time] [2021-08-30 19:10:00,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 747 states. [2021-08-30 19:10:00,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 747 to 718. [2021-08-30 19:10:00,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 718 states, 566 states have (on average 1.3091872791519434) internal successors, (741), 578 states have internal predecessors, (741), 86 states have call successors, (86), 58 states have call predecessors, (86), 65 states have return successors, (124), 83 states have call predecessors, (124), 78 states have call successors, (124) [2021-08-30 19:10:00,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 718 states to 718 states and 951 transitions. [2021-08-30 19:10:00,360 INFO L78 Accepts]: Start accepts. Automaton has 718 states and 951 transitions. Word has length 41 [2021-08-30 19:10:00,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 19:10:00,364 INFO L470 AbstractCegarLoop]: Abstraction has 718 states and 951 transitions. [2021-08-30 19:10:00,365 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.625) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2021-08-30 19:10:00,365 INFO L276 IsEmpty]: Start isEmpty. Operand 718 states and 951 transitions. [2021-08-30 19:10:00,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-08-30 19:10:00,366 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 19:10:00,367 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 19:10:00,367 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-08-30 19:10:00,367 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-08-30 19:10:00,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 19:10:00,369 INFO L82 PathProgramCache]: Analyzing trace with hash -359990476, now seen corresponding path program 1 times [2021-08-30 19:10:00,369 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 19:10:00,369 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152223167] [2021-08-30 19:10:00,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:10:00,370 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 19:10:00,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:00,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:10:00,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:00,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-08-30 19:10:00,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:00,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-08-30 19:10:00,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:00,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-08-30 19:10:00,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:00,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-08-30 19:10:00,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:00,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 19:10:00,661 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 19:10:00,661 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152223167] [2021-08-30 19:10:00,662 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152223167] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 19:10:00,662 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 19:10:00,662 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-08-30 19:10:00,662 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87162016] [2021-08-30 19:10:00,663 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-08-30 19:10:00,664 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 19:10:00,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-08-30 19:10:00,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2021-08-30 19:10:00,665 INFO L87 Difference]: Start difference. First operand 718 states and 951 transitions. Second operand has 12 states, 12 states have (on average 2.5) internal successors, (30), 7 states have internal predecessors, (30), 3 states have call successors, (7), 7 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2021-08-30 19:10:02,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 19:10:02,132 INFO L93 Difference]: Finished difference Result 747 states and 987 transitions. [2021-08-30 19:10:02,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-30 19:10:02,132 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.5) internal successors, (30), 7 states have internal predecessors, (30), 3 states have call successors, (7), 7 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) Word has length 42 [2021-08-30 19:10:02,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 19:10:02,135 INFO L225 Difference]: With dead ends: 747 [2021-08-30 19:10:02,135 INFO L226 Difference]: Without dead ends: 747 [2021-08-30 19:10:02,136 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 495.65ms TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2021-08-30 19:10:02,137 INFO L928 BasicCegarLoop]: 63 mSDtfsCounter, 660 mSDsluCounter, 420 mSDsCounter, 0 mSdLazyCounter, 1794 mSolverCounterSat, 186 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 905.87ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 670 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 1980 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.50ms SdHoareTripleChecker+Time, 186 IncrementalHoareTripleChecker+Valid, 1794 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1068.99ms IncrementalHoareTripleChecker+Time [2021-08-30 19:10:02,138 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [670 Valid, 89 Invalid, 1980 Unknown, 0 Unchecked, 9.50ms Time], IncrementalHoareTripleChecker [186 Valid, 1794 Invalid, 0 Unknown, 0 Unchecked, 1068.99ms Time] [2021-08-30 19:10:02,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 747 states. [2021-08-30 19:10:02,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 747 to 718. [2021-08-30 19:10:02,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 718 states, 566 states have (on average 1.3074204946996466) internal successors, (740), 578 states have internal predecessors, (740), 86 states have call successors, (86), 58 states have call predecessors, (86), 65 states have return successors, (124), 83 states have call predecessors, (124), 78 states have call successors, (124) [2021-08-30 19:10:02,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 718 states to 718 states and 950 transitions. [2021-08-30 19:10:02,158 INFO L78 Accepts]: Start accepts. Automaton has 718 states and 950 transitions. Word has length 42 [2021-08-30 19:10:02,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 19:10:02,158 INFO L470 AbstractCegarLoop]: Abstraction has 718 states and 950 transitions. [2021-08-30 19:10:02,159 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.5) internal successors, (30), 7 states have internal predecessors, (30), 3 states have call successors, (7), 7 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2021-08-30 19:10:02,160 INFO L276 IsEmpty]: Start isEmpty. Operand 718 states and 950 transitions. [2021-08-30 19:10:02,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-08-30 19:10:02,161 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 19:10:02,161 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 19:10:02,161 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-08-30 19:10:02,161 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-08-30 19:10:02,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 19:10:02,162 INFO L82 PathProgramCache]: Analyzing trace with hash 864804566, now seen corresponding path program 1 times [2021-08-30 19:10:02,162 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 19:10:02,163 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594015476] [2021-08-30 19:10:02,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:10:02,163 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 19:10:02,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:02,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:10:02,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:02,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-08-30 19:10:02,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:02,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-08-30 19:10:02,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:02,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-08-30 19:10:02,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:02,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-08-30 19:10:02,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:02,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 19:10:02,481 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 19:10:02,481 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594015476] [2021-08-30 19:10:02,481 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594015476] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 19:10:02,482 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 19:10:02,482 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-08-30 19:10:02,482 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875164526] [2021-08-30 19:10:02,482 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-08-30 19:10:02,482 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 19:10:02,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-08-30 19:10:02,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2021-08-30 19:10:02,483 INFO L87 Difference]: Start difference. First operand 718 states and 950 transitions. Second operand has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 7 states have internal predecessors, (31), 3 states have call successors, (7), 7 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2021-08-30 19:10:03,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 19:10:03,697 INFO L93 Difference]: Finished difference Result 747 states and 986 transitions. [2021-08-30 19:10:03,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-30 19:10:03,697 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 7 states have internal predecessors, (31), 3 states have call successors, (7), 7 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) Word has length 43 [2021-08-30 19:10:03,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 19:10:03,701 INFO L225 Difference]: With dead ends: 747 [2021-08-30 19:10:03,701 INFO L226 Difference]: Without dead ends: 747 [2021-08-30 19:10:03,701 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 501.19ms TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2021-08-30 19:10:03,702 INFO L928 BasicCegarLoop]: 63 mSDtfsCounter, 1115 mSDsluCounter, 299 mSDsCounter, 0 mSdLazyCounter, 1143 mSolverCounterSat, 355 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 682.48ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1125 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 1498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.59ms SdHoareTripleChecker+Time, 355 IncrementalHoareTripleChecker+Valid, 1143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 838.39ms IncrementalHoareTripleChecker+Time [2021-08-30 19:10:03,703 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [1125 Valid, 87 Invalid, 1498 Unknown, 0 Unchecked, 6.59ms Time], IncrementalHoareTripleChecker [355 Valid, 1143 Invalid, 0 Unknown, 0 Unchecked, 838.39ms Time] [2021-08-30 19:10:03,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 747 states. [2021-08-30 19:10:03,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 747 to 718. [2021-08-30 19:10:03,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 718 states, 566 states have (on average 1.3056537102473498) internal successors, (739), 578 states have internal predecessors, (739), 86 states have call successors, (86), 58 states have call predecessors, (86), 65 states have return successors, (124), 83 states have call predecessors, (124), 78 states have call successors, (124) [2021-08-30 19:10:03,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 718 states to 718 states and 949 transitions. [2021-08-30 19:10:03,721 INFO L78 Accepts]: Start accepts. Automaton has 718 states and 949 transitions. Word has length 43 [2021-08-30 19:10:03,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 19:10:03,722 INFO L470 AbstractCegarLoop]: Abstraction has 718 states and 949 transitions. [2021-08-30 19:10:03,722 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 7 states have internal predecessors, (31), 3 states have call successors, (7), 7 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2021-08-30 19:10:03,722 INFO L276 IsEmpty]: Start isEmpty. Operand 718 states and 949 transitions. [2021-08-30 19:10:03,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-08-30 19:10:03,723 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 19:10:03,723 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 19:10:03,724 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-08-30 19:10:03,724 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-08-30 19:10:03,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 19:10:03,725 INFO L82 PathProgramCache]: Analyzing trace with hash 484799798, now seen corresponding path program 1 times [2021-08-30 19:10:03,725 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 19:10:03,725 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201250579] [2021-08-30 19:10:03,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:10:03,725 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 19:10:03,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:03,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:10:03,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:03,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-08-30 19:10:03,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:03,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-08-30 19:10:03,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:03,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-08-30 19:10:03,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:03,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 19:10:03,911 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 19:10:03,911 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201250579] [2021-08-30 19:10:03,911 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201250579] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 19:10:03,911 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 19:10:03,911 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-30 19:10:03,912 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120794199] [2021-08-30 19:10:03,912 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-30 19:10:03,912 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 19:10:03,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-30 19:10:03,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-08-30 19:10:03,913 INFO L87 Difference]: Start difference. First operand 718 states and 949 transitions. Second operand has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (8), 6 states have call predecessors, (8), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-08-30 19:10:05,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 19:10:05,352 INFO L93 Difference]: Finished difference Result 1090 states and 1456 transitions. [2021-08-30 19:10:05,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-30 19:10:05,352 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (8), 6 states have call predecessors, (8), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 44 [2021-08-30 19:10:05,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 19:10:05,357 INFO L225 Difference]: With dead ends: 1090 [2021-08-30 19:10:05,358 INFO L226 Difference]: Without dead ends: 1090 [2021-08-30 19:10:05,358 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 211.86ms TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-08-30 19:10:05,359 INFO L928 BasicCegarLoop]: 88 mSDtfsCounter, 405 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 1628 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1108.22ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 418 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 1742 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.87ms SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 1628 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1306.39ms IncrementalHoareTripleChecker+Time [2021-08-30 19:10:05,359 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [418 Valid, 145 Invalid, 1742 Unknown, 0 Unchecked, 9.87ms Time], IncrementalHoareTripleChecker [114 Valid, 1628 Invalid, 0 Unknown, 0 Unchecked, 1306.39ms Time] [2021-08-30 19:10:05,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1090 states. [2021-08-30 19:10:05,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1090 to 831. [2021-08-30 19:10:05,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 831 states, 657 states have (on average 1.3135464231354643) internal successors, (863), 671 states have internal predecessors, (863), 96 states have call successors, (96), 68 states have call predecessors, (96), 77 states have return successors, (144), 93 states have call predecessors, (144), 88 states have call successors, (144) [2021-08-30 19:10:05,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 831 states to 831 states and 1103 transitions. [2021-08-30 19:10:05,388 INFO L78 Accepts]: Start accepts. Automaton has 831 states and 1103 transitions. Word has length 44 [2021-08-30 19:10:05,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 19:10:05,388 INFO L470 AbstractCegarLoop]: Abstraction has 831 states and 1103 transitions. [2021-08-30 19:10:05,388 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (8), 6 states have call predecessors, (8), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-08-30 19:10:05,388 INFO L276 IsEmpty]: Start isEmpty. Operand 831 states and 1103 transitions. [2021-08-30 19:10:05,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-08-30 19:10:05,389 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 19:10:05,390 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 19:10:05,390 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-08-30 19:10:05,390 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-08-30 19:10:05,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 19:10:05,390 INFO L82 PathProgramCache]: Analyzing trace with hash 1122912541, now seen corresponding path program 1 times [2021-08-30 19:10:05,391 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 19:10:05,391 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682699520] [2021-08-30 19:10:05,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:10:05,391 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 19:10:05,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:05,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:10:05,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:05,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-08-30 19:10:05,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:05,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-08-30 19:10:05,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:05,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-08-30 19:10:05,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:05,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-08-30 19:10:05,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:05,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 19:10:05,596 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 19:10:05,596 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682699520] [2021-08-30 19:10:05,596 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682699520] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 19:10:05,596 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 19:10:05,596 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-08-30 19:10:05,597 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101311208] [2021-08-30 19:10:05,597 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-08-30 19:10:05,597 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 19:10:05,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-30 19:10:05,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-08-30 19:10:05,598 INFO L87 Difference]: Start difference. First operand 831 states and 1103 transitions. Second operand has 10 states, 10 states have (on average 3.2) internal successors, (32), 4 states have internal predecessors, (32), 2 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2021-08-30 19:10:06,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 19:10:06,935 INFO L93 Difference]: Finished difference Result 871 states and 1151 transitions. [2021-08-30 19:10:06,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-30 19:10:06,936 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.2) internal successors, (32), 4 states have internal predecessors, (32), 2 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 44 [2021-08-30 19:10:06,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 19:10:06,939 INFO L225 Difference]: With dead ends: 871 [2021-08-30 19:10:06,940 INFO L226 Difference]: Without dead ends: 856 [2021-08-30 19:10:06,940 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 119.50ms TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-08-30 19:10:06,941 INFO L928 BasicCegarLoop]: 81 mSDtfsCounter, 174 mSDsluCounter, 901 mSDsCounter, 0 mSdLazyCounter, 2328 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1070.19ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 399 SdHoareTripleChecker+Invalid, 2388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.67ms SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 2328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1288.13ms IncrementalHoareTripleChecker+Time [2021-08-30 19:10:06,941 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [177 Valid, 399 Invalid, 2388 Unknown, 0 Unchecked, 12.67ms Time], IncrementalHoareTripleChecker [60 Valid, 2328 Invalid, 0 Unknown, 0 Unchecked, 1288.13ms Time] [2021-08-30 19:10:06,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 856 states. [2021-08-30 19:10:06,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 856 to 829. [2021-08-30 19:10:06,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 829 states, 656 states have (on average 1.3125) internal successors, (861), 670 states have internal predecessors, (861), 95 states have call successors, (95), 68 states have call predecessors, (95), 77 states have return successors, (143), 92 states have call predecessors, (143), 87 states have call successors, (143) [2021-08-30 19:10:06,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 829 states to 829 states and 1099 transitions. [2021-08-30 19:10:06,963 INFO L78 Accepts]: Start accepts. Automaton has 829 states and 1099 transitions. Word has length 44 [2021-08-30 19:10:06,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 19:10:06,963 INFO L470 AbstractCegarLoop]: Abstraction has 829 states and 1099 transitions. [2021-08-30 19:10:06,963 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.2) internal successors, (32), 4 states have internal predecessors, (32), 2 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2021-08-30 19:10:06,963 INFO L276 IsEmpty]: Start isEmpty. Operand 829 states and 1099 transitions. [2021-08-30 19:10:06,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-08-30 19:10:06,964 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 19:10:06,964 INFO L513 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] [2021-08-30 19:10:06,965 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-08-30 19:10:06,965 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-08-30 19:10:06,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 19:10:06,965 INFO L82 PathProgramCache]: Analyzing trace with hash 1906062941, now seen corresponding path program 1 times [2021-08-30 19:10:06,965 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 19:10:06,966 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762694917] [2021-08-30 19:10:06,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:10:06,966 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 19:10:06,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:07,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:10:07,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:07,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-08-30 19:10:07,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:07,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-08-30 19:10:07,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:07,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-08-30 19:10:07,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:07,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 19:10:07,232 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 19:10:07,232 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762694917] [2021-08-30 19:10:07,233 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762694917] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 19:10:07,233 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 19:10:07,233 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-08-30 19:10:07,235 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494845622] [2021-08-30 19:10:07,235 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-08-30 19:10:07,236 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 19:10:07,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-30 19:10:07,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-08-30 19:10:07,236 INFO L87 Difference]: Start difference. First operand 829 states and 1099 transitions. Second operand has 10 states, 10 states have (on average 3.3) internal successors, (33), 6 states have internal predecessors, (33), 4 states have call successors, (8), 7 states have call predecessors, (8), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2021-08-30 19:10:08,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 19:10:08,829 INFO L93 Difference]: Finished difference Result 874 states and 1141 transitions. [2021-08-30 19:10:08,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-08-30 19:10:08,831 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.3) internal successors, (33), 6 states have internal predecessors, (33), 4 states have call successors, (8), 7 states have call predecessors, (8), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 45 [2021-08-30 19:10:08,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 19:10:08,835 INFO L225 Difference]: With dead ends: 874 [2021-08-30 19:10:08,835 INFO L226 Difference]: Without dead ends: 874 [2021-08-30 19:10:08,835 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 555.25ms TimeCoverageRelationStatistics Valid=84, Invalid=188, Unknown=0, NotChecked=0, Total=272 [2021-08-30 19:10:08,836 INFO L928 BasicCegarLoop]: 85 mSDtfsCounter, 1047 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 1538 mSolverCounterSat, 386 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 953.98ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1059 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 1924 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.20ms SdHoareTripleChecker+Time, 386 IncrementalHoareTripleChecker+Valid, 1538 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1131.62ms IncrementalHoareTripleChecker+Time [2021-08-30 19:10:08,836 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [1059 Valid, 94 Invalid, 1924 Unknown, 0 Unchecked, 8.20ms Time], IncrementalHoareTripleChecker [386 Valid, 1538 Invalid, 0 Unknown, 0 Unchecked, 1131.62ms Time] [2021-08-30 19:10:08,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 874 states. [2021-08-30 19:10:08,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 874 to 820. [2021-08-30 19:10:08,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 820 states, 647 states have (on average 1.2982998454404946) internal successors, (840), 661 states have internal predecessors, (840), 95 states have call successors, (95), 68 states have call predecessors, (95), 77 states have return successors, (143), 92 states have call predecessors, (143), 87 states have call successors, (143) [2021-08-30 19:10:08,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 820 states to 820 states and 1078 transitions. [2021-08-30 19:10:08,857 INFO L78 Accepts]: Start accepts. Automaton has 820 states and 1078 transitions. Word has length 45 [2021-08-30 19:10:08,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 19:10:08,857 INFO L470 AbstractCegarLoop]: Abstraction has 820 states and 1078 transitions. [2021-08-30 19:10:08,857 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.3) internal successors, (33), 6 states have internal predecessors, (33), 4 states have call successors, (8), 7 states have call predecessors, (8), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2021-08-30 19:10:08,857 INFO L276 IsEmpty]: Start isEmpty. Operand 820 states and 1078 transitions. [2021-08-30 19:10:08,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-08-30 19:10:08,858 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 19:10:08,858 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 19:10:08,859 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-08-30 19:10:08,859 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-08-30 19:10:08,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 19:10:08,859 INFO L82 PathProgramCache]: Analyzing trace with hash 1924856002, now seen corresponding path program 1 times [2021-08-30 19:10:08,859 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 19:10:08,860 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411750866] [2021-08-30 19:10:08,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:10:08,860 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 19:10:08,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:08,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:10:08,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:08,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-08-30 19:10:08,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:08,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-08-30 19:10:08,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:09,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-08-30 19:10:09,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:09,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 19:10:09,014 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 19:10:09,014 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411750866] [2021-08-30 19:10:09,014 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411750866] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 19:10:09,014 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 19:10:09,015 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-30 19:10:09,015 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650088607] [2021-08-30 19:10:09,015 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-30 19:10:09,015 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 19:10:09,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-30 19:10:09,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-08-30 19:10:09,016 INFO L87 Difference]: Start difference. First operand 820 states and 1078 transitions. Second operand has 8 states, 8 states have (on average 4.5) internal successors, (36), 4 states have internal predecessors, (36), 3 states have call successors, (9), 6 states have call predecessors, (9), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-08-30 19:10:10,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 19:10:10,379 INFO L93 Difference]: Finished difference Result 580 states and 730 transitions. [2021-08-30 19:10:10,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-30 19:10:10,379 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 4 states have internal predecessors, (36), 3 states have call successors, (9), 6 states have call predecessors, (9), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 49 [2021-08-30 19:10:10,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 19:10:10,382 INFO L225 Difference]: With dead ends: 580 [2021-08-30 19:10:10,382 INFO L226 Difference]: Without dead ends: 580 [2021-08-30 19:10:10,382 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 281.26ms TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2021-08-30 19:10:10,383 INFO L928 BasicCegarLoop]: 65 mSDtfsCounter, 534 mSDsluCounter, 380 mSDsCounter, 0 mSdLazyCounter, 1826 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 997.82ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 541 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 1934 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.09ms SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 1826 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1150.26ms IncrementalHoareTripleChecker+Time [2021-08-30 19:10:10,383 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [541 Valid, 84 Invalid, 1934 Unknown, 0 Unchecked, 8.09ms Time], IncrementalHoareTripleChecker [108 Valid, 1826 Invalid, 0 Unknown, 0 Unchecked, 1150.26ms Time] [2021-08-30 19:10:10,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2021-08-30 19:10:10,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 528. [2021-08-30 19:10:10,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 528 states, 416 states have (on average 1.2740384615384615) internal successors, (530), 427 states have internal predecessors, (530), 62 states have call successors, (62), 43 states have call predecessors, (62), 49 states have return successors, (75), 59 states have call predecessors, (75), 54 states have call successors, (75) [2021-08-30 19:10:10,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 528 states to 528 states and 667 transitions. [2021-08-30 19:10:10,396 INFO L78 Accepts]: Start accepts. Automaton has 528 states and 667 transitions. Word has length 49 [2021-08-30 19:10:10,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 19:10:10,396 INFO L470 AbstractCegarLoop]: Abstraction has 528 states and 667 transitions. [2021-08-30 19:10:10,396 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 4 states have internal predecessors, (36), 3 states have call successors, (9), 6 states have call predecessors, (9), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-08-30 19:10:10,397 INFO L276 IsEmpty]: Start isEmpty. Operand 528 states and 667 transitions. [2021-08-30 19:10:10,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-08-30 19:10:10,398 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 19:10:10,398 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 19:10:10,398 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-08-30 19:10:10,398 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-08-30 19:10:10,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 19:10:10,399 INFO L82 PathProgramCache]: Analyzing trace with hash -6834350, now seen corresponding path program 1 times [2021-08-30 19:10:10,399 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 19:10:10,399 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843442703] [2021-08-30 19:10:10,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:10:10,399 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 19:10:10,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:10,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:10:10,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:10,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-08-30 19:10:10,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:10,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-08-30 19:10:10,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:10,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-08-30 19:10:10,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:10,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-08-30 19:10:10,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:10,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-08-30 19:10:10,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:10,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 19:10:10,568 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 19:10:10,568 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843442703] [2021-08-30 19:10:10,568 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843442703] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 19:10:10,568 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 19:10:10,568 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-30 19:10:10,568 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126457122] [2021-08-30 19:10:10,569 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-30 19:10:10,569 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 19:10:10,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-30 19:10:10,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-08-30 19:10:10,570 INFO L87 Difference]: Start difference. First operand 528 states and 667 transitions. Second operand has 8 states, 8 states have (on average 4.75) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (11), 7 states have call predecessors, (11), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2021-08-30 19:10:11,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 19:10:11,442 INFO L93 Difference]: Finished difference Result 569 states and 720 transitions. [2021-08-30 19:10:11,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-30 19:10:11,445 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (11), 7 states have call predecessors, (11), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 55 [2021-08-30 19:10:11,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 19:10:11,447 INFO L225 Difference]: With dead ends: 569 [2021-08-30 19:10:11,448 INFO L226 Difference]: Without dead ends: 569 [2021-08-30 19:10:11,450 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 192.62ms TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2021-08-30 19:10:11,451 INFO L928 BasicCegarLoop]: 70 mSDtfsCounter, 573 mSDsluCounter, 422 mSDsCounter, 0 mSdLazyCounter, 1139 mSolverCounterSat, 233 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 628.93ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 578 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 1372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.05ms SdHoareTripleChecker+Time, 233 IncrementalHoareTripleChecker+Valid, 1139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 759.11ms IncrementalHoareTripleChecker+Time [2021-08-30 19:10:11,451 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [578 Valid, 125 Invalid, 1372 Unknown, 0 Unchecked, 6.05ms Time], IncrementalHoareTripleChecker [233 Valid, 1139 Invalid, 0 Unknown, 0 Unchecked, 759.11ms Time] [2021-08-30 19:10:11,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 569 states. [2021-08-30 19:10:11,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 569 to 542. [2021-08-30 19:10:11,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 542 states, 429 states have (on average 1.275058275058275) internal successors, (547), 440 states have internal predecessors, (547), 62 states have call successors, (62), 43 states have call predecessors, (62), 50 states have return successors, (78), 59 states have call predecessors, (78), 54 states have call successors, (78) [2021-08-30 19:10:11,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 542 states to 542 states and 687 transitions. [2021-08-30 19:10:11,463 INFO L78 Accepts]: Start accepts. Automaton has 542 states and 687 transitions. Word has length 55 [2021-08-30 19:10:11,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 19:10:11,463 INFO L470 AbstractCegarLoop]: Abstraction has 542 states and 687 transitions. [2021-08-30 19:10:11,464 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (11), 7 states have call predecessors, (11), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2021-08-30 19:10:11,464 INFO L276 IsEmpty]: Start isEmpty. Operand 542 states and 687 transitions. [2021-08-30 19:10:11,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-08-30 19:10:11,465 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 19:10:11,465 INFO L513 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] [2021-08-30 19:10:11,465 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-08-30 19:10:11,465 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-08-30 19:10:11,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 19:10:11,466 INFO L82 PathProgramCache]: Analyzing trace with hash -2114913751, now seen corresponding path program 1 times [2021-08-30 19:10:11,466 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 19:10:11,466 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448263863] [2021-08-30 19:10:11,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:10:11,466 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 19:10:11,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:11,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:10:11,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:11,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-08-30 19:10:11,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:11,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-08-30 19:10:11,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:11,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-08-30 19:10:11,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:11,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-08-30 19:10:11,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:11,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 19:10:11,728 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 19:10:11,728 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448263863] [2021-08-30 19:10:11,730 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448263863] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 19:10:11,730 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 19:10:11,731 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-08-30 19:10:11,731 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208020095] [2021-08-30 19:10:11,731 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-08-30 19:10:11,731 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 19:10:11,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-08-30 19:10:11,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-08-30 19:10:11,732 INFO L87 Difference]: Start difference. First operand 542 states and 687 transitions. Second operand has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 7 states have internal predecessors, (40), 4 states have call successors, (7), 7 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2021-08-30 19:10:13,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 19:10:13,849 INFO L93 Difference]: Finished difference Result 714 states and 903 transitions. [2021-08-30 19:10:13,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-08-30 19:10:13,850 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 7 states have internal predecessors, (40), 4 states have call successors, (7), 7 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) Word has length 52 [2021-08-30 19:10:13,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 19:10:13,854 INFO L225 Difference]: With dead ends: 714 [2021-08-30 19:10:13,854 INFO L226 Difference]: Without dead ends: 714 [2021-08-30 19:10:13,854 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 708.04ms TimeCoverageRelationStatistics Valid=160, Invalid=490, Unknown=0, NotChecked=0, Total=650 [2021-08-30 19:10:13,855 INFO L928 BasicCegarLoop]: 67 mSDtfsCounter, 970 mSDsluCounter, 627 mSDsCounter, 0 mSdLazyCounter, 2463 mSolverCounterSat, 392 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1279.27ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 972 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 2855 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.84ms SdHoareTripleChecker+Time, 392 IncrementalHoareTripleChecker+Valid, 2463 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1523.36ms IncrementalHoareTripleChecker+Time [2021-08-30 19:10:13,855 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [972 Valid, 73 Invalid, 2855 Unknown, 0 Unchecked, 12.84ms Time], IncrementalHoareTripleChecker [392 Valid, 2463 Invalid, 0 Unknown, 0 Unchecked, 1523.36ms Time] [2021-08-30 19:10:13,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 714 states. [2021-08-30 19:10:13,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 714 to 571. [2021-08-30 19:10:13,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 571 states, 452 states have (on average 1.2676991150442478) internal successors, (573), 464 states have internal predecessors, (573), 64 states have call successors, (64), 44 states have call predecessors, (64), 54 states have return successors, (83), 63 states have call predecessors, (83), 56 states have call successors, (83) [2021-08-30 19:10:13,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 720 transitions. [2021-08-30 19:10:13,871 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 720 transitions. Word has length 52 [2021-08-30 19:10:13,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 19:10:13,871 INFO L470 AbstractCegarLoop]: Abstraction has 571 states and 720 transitions. [2021-08-30 19:10:13,871 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 7 states have internal predecessors, (40), 4 states have call successors, (7), 7 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2021-08-30 19:10:13,872 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 720 transitions. [2021-08-30 19:10:13,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-08-30 19:10:13,874 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 19:10:13,874 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 19:10:13,874 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-08-30 19:10:13,874 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-08-30 19:10:13,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 19:10:13,876 INFO L82 PathProgramCache]: Analyzing trace with hash -632991762, now seen corresponding path program 1 times [2021-08-30 19:10:13,876 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 19:10:13,876 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688838000] [2021-08-30 19:10:13,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:10:13,876 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 19:10:13,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:13,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:10:13,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:14,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-08-30 19:10:14,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:14,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-08-30 19:10:14,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:14,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-08-30 19:10:14,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:14,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-08-30 19:10:14,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:14,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 19:10:14,092 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 19:10:14,092 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688838000] [2021-08-30 19:10:14,092 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688838000] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 19:10:14,092 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 19:10:14,092 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-30 19:10:14,092 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126604093] [2021-08-30 19:10:14,093 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-30 19:10:14,093 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 19:10:14,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-30 19:10:14,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-08-30 19:10:14,094 INFO L87 Difference]: Start difference. First operand 571 states and 720 transitions. Second operand has 8 states, 8 states have (on average 5.25) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2021-08-30 19:10:14,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 19:10:14,895 INFO L93 Difference]: Finished difference Result 638 states and 811 transitions. [2021-08-30 19:10:14,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-30 19:10:14,895 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 54 [2021-08-30 19:10:14,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 19:10:14,897 INFO L225 Difference]: With dead ends: 638 [2021-08-30 19:10:14,898 INFO L226 Difference]: Without dead ends: 638 [2021-08-30 19:10:14,898 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 190.34ms TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-08-30 19:10:14,898 INFO L928 BasicCegarLoop]: 80 mSDtfsCounter, 249 mSDsluCounter, 420 mSDsCounter, 0 mSdLazyCounter, 1289 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 608.49ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 252 SdHoareTripleChecker+Valid, 205 SdHoareTripleChecker+Invalid, 1396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.92ms SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 1289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 716.90ms IncrementalHoareTripleChecker+Time [2021-08-30 19:10:14,899 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [252 Valid, 205 Invalid, 1396 Unknown, 0 Unchecked, 5.92ms Time], IncrementalHoareTripleChecker [107 Valid, 1289 Invalid, 0 Unknown, 0 Unchecked, 716.90ms Time] [2021-08-30 19:10:14,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 638 states. [2021-08-30 19:10:14,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 638 to 583. [2021-08-30 19:10:14,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 583 states, 464 states have (on average 1.271551724137931) internal successors, (590), 476 states have internal predecessors, (590), 64 states have call successors, (64), 44 states have call predecessors, (64), 54 states have return successors, (83), 63 states have call predecessors, (83), 56 states have call successors, (83) [2021-08-30 19:10:14,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 583 states to 583 states and 737 transitions. [2021-08-30 19:10:14,912 INFO L78 Accepts]: Start accepts. Automaton has 583 states and 737 transitions. Word has length 54 [2021-08-30 19:10:14,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 19:10:14,912 INFO L470 AbstractCegarLoop]: Abstraction has 583 states and 737 transitions. [2021-08-30 19:10:14,913 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2021-08-30 19:10:14,913 INFO L276 IsEmpty]: Start isEmpty. Operand 583 states and 737 transitions. [2021-08-30 19:10:14,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-08-30 19:10:14,914 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 19:10:14,914 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 19:10:14,914 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-08-30 19:10:14,915 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-08-30 19:10:14,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 19:10:14,915 INFO L82 PathProgramCache]: Analyzing trace with hash 2073627632, now seen corresponding path program 1 times [2021-08-30 19:10:14,915 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 19:10:14,915 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197959130] [2021-08-30 19:10:14,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:10:14,916 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 19:10:14,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:15,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:10:15,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:15,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-08-30 19:10:15,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:15,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-08-30 19:10:15,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:15,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-08-30 19:10:15,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:15,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-08-30 19:10:15,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:15,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 19:10:15,131 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 19:10:15,132 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197959130] [2021-08-30 19:10:15,132 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197959130] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 19:10:15,132 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 19:10:15,132 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-08-30 19:10:15,132 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871827497] [2021-08-30 19:10:15,133 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-08-30 19:10:15,133 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 19:10:15,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-08-30 19:10:15,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-08-30 19:10:15,134 INFO L87 Difference]: Start difference. First operand 583 states and 737 transitions. Second operand has 12 states, 12 states have (on average 3.5) internal successors, (42), 7 states have internal predecessors, (42), 4 states have call successors, (7), 7 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2021-08-30 19:10:16,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 19:10:16,675 INFO L93 Difference]: Finished difference Result 611 states and 769 transitions. [2021-08-30 19:10:16,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-08-30 19:10:16,676 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.5) internal successors, (42), 7 states have internal predecessors, (42), 4 states have call successors, (7), 7 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) Word has length 54 [2021-08-30 19:10:16,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 19:10:16,678 INFO L225 Difference]: With dead ends: 611 [2021-08-30 19:10:16,679 INFO L226 Difference]: Without dead ends: 611 [2021-08-30 19:10:16,679 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 466.83ms TimeCoverageRelationStatistics Valid=112, Invalid=350, Unknown=0, NotChecked=0, Total=462 [2021-08-30 19:10:16,680 INFO L928 BasicCegarLoop]: 56 mSDtfsCounter, 588 mSDsluCounter, 579 mSDsCounter, 0 mSdLazyCounter, 2220 mSolverCounterSat, 160 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 997.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 596 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 2380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.81ms SdHoareTripleChecker+Time, 160 IncrementalHoareTripleChecker+Valid, 2220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1171.65ms IncrementalHoareTripleChecker+Time [2021-08-30 19:10:16,680 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [596 Valid, 77 Invalid, 2380 Unknown, 0 Unchecked, 8.81ms Time], IncrementalHoareTripleChecker [160 Valid, 2220 Invalid, 0 Unknown, 0 Unchecked, 1171.65ms Time] [2021-08-30 19:10:16,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 611 states. [2021-08-30 19:10:16,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 611 to 564. [2021-08-30 19:10:16,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 564 states, 447 states have (on average 1.2662192393736018) internal successors, (566), 459 states have internal predecessors, (566), 64 states have call successors, (64), 44 states have call predecessors, (64), 52 states have return successors, (81), 61 states have call predecessors, (81), 56 states have call successors, (81) [2021-08-30 19:10:16,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 564 states to 564 states and 711 transitions. [2021-08-30 19:10:16,693 INFO L78 Accepts]: Start accepts. Automaton has 564 states and 711 transitions. Word has length 54 [2021-08-30 19:10:16,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 19:10:16,693 INFO L470 AbstractCegarLoop]: Abstraction has 564 states and 711 transitions. [2021-08-30 19:10:16,693 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.5) internal successors, (42), 7 states have internal predecessors, (42), 4 states have call successors, (7), 7 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2021-08-30 19:10:16,694 INFO L276 IsEmpty]: Start isEmpty. Operand 564 states and 711 transitions. [2021-08-30 19:10:16,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-08-30 19:10:16,695 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 19:10:16,695 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 19:10:16,695 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-08-30 19:10:16,695 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-08-30 19:10:16,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 19:10:16,696 INFO L82 PathProgramCache]: Analyzing trace with hash -2078060306, now seen corresponding path program 1 times [2021-08-30 19:10:16,696 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 19:10:16,696 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025887710] [2021-08-30 19:10:16,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:10:16,696 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 19:10:16,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:16,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:10:16,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:16,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-08-30 19:10:16,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:16,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-08-30 19:10:16,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:16,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-08-30 19:10:16,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:16,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-08-30 19:10:16,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:16,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 19:10:16,867 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 19:10:16,867 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025887710] [2021-08-30 19:10:16,867 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025887710] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 19:10:16,868 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 19:10:16,868 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-30 19:10:16,868 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183437257] [2021-08-30 19:10:16,869 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-30 19:10:16,870 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 19:10:16,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-30 19:10:16,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-08-30 19:10:16,870 INFO L87 Difference]: Start difference. First operand 564 states and 711 transitions. Second operand has 8 states, 8 states have (on average 5.25) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2021-08-30 19:10:17,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 19:10:17,970 INFO L93 Difference]: Finished difference Result 666 states and 840 transitions. [2021-08-30 19:10:17,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-30 19:10:17,970 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 54 [2021-08-30 19:10:17,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 19:10:17,973 INFO L225 Difference]: With dead ends: 666 [2021-08-30 19:10:17,973 INFO L226 Difference]: Without dead ends: 666 [2021-08-30 19:10:17,973 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 180.04ms TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-08-30 19:10:17,974 INFO L928 BasicCegarLoop]: 89 mSDtfsCounter, 277 mSDsluCounter, 333 mSDsCounter, 0 mSdLazyCounter, 1610 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 869.53ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 286 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 1672 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.46ms SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 1610 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1001.73ms IncrementalHoareTripleChecker+Time [2021-08-30 19:10:17,974 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [286 Valid, 149 Invalid, 1672 Unknown, 0 Unchecked, 7.46ms Time], IncrementalHoareTripleChecker [62 Valid, 1610 Invalid, 0 Unknown, 0 Unchecked, 1001.73ms Time] [2021-08-30 19:10:17,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 666 states. [2021-08-30 19:10:17,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 666 to 580. [2021-08-30 19:10:17,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 580 states, 461 states have (on average 1.2668112798264641) internal successors, (584), 473 states have internal predecessors, (584), 64 states have call successors, (64), 45 states have call predecessors, (64), 54 states have return successors, (85), 62 states have call predecessors, (85), 57 states have call successors, (85) [2021-08-30 19:10:17,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 580 states to 580 states and 733 transitions. [2021-08-30 19:10:17,989 INFO L78 Accepts]: Start accepts. Automaton has 580 states and 733 transitions. Word has length 54 [2021-08-30 19:10:17,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 19:10:17,989 INFO L470 AbstractCegarLoop]: Abstraction has 580 states and 733 transitions. [2021-08-30 19:10:17,989 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2021-08-30 19:10:17,989 INFO L276 IsEmpty]: Start isEmpty. Operand 580 states and 733 transitions. [2021-08-30 19:10:17,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-08-30 19:10:17,990 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 19:10:17,991 INFO L513 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] [2021-08-30 19:10:17,991 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-08-30 19:10:17,991 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-08-30 19:10:17,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 19:10:17,991 INFO L82 PathProgramCache]: Analyzing trace with hash 2007283295, now seen corresponding path program 1 times [2021-08-30 19:10:17,992 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 19:10:17,992 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451870509] [2021-08-30 19:10:17,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:10:17,992 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 19:10:18,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:18,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:10:18,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:18,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-08-30 19:10:18,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:18,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-08-30 19:10:18,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:18,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-08-30 19:10:18,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:18,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-08-30 19:10:18,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:18,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-08-30 19:10:18,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:18,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 19:10:18,265 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 19:10:18,266 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451870509] [2021-08-30 19:10:18,266 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451870509] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 19:10:18,266 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 19:10:18,266 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-08-30 19:10:18,266 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184970553] [2021-08-30 19:10:18,267 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-08-30 19:10:18,267 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 19:10:18,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-30 19:10:18,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-08-30 19:10:18,268 INFO L87 Difference]: Start difference. First operand 580 states and 733 transitions. Second operand has 10 states, 10 states have (on average 4.5) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (10), 7 states have call predecessors, (10), 3 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) [2021-08-30 19:10:19,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 19:10:19,354 INFO L93 Difference]: Finished difference Result 544 states and 676 transitions. [2021-08-30 19:10:19,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-30 19:10:19,355 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.5) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (10), 7 states have call predecessors, (10), 3 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) Word has length 61 [2021-08-30 19:10:19,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 19:10:19,357 INFO L225 Difference]: With dead ends: 544 [2021-08-30 19:10:19,357 INFO L226 Difference]: Without dead ends: 544 [2021-08-30 19:10:19,357 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 125.35ms TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-08-30 19:10:19,358 INFO L928 BasicCegarLoop]: 70 mSDtfsCounter, 302 mSDsluCounter, 840 mSDsCounter, 0 mSdLazyCounter, 1873 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 893.81ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 308 SdHoareTripleChecker+Valid, 296 SdHoareTripleChecker+Invalid, 1962 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.45ms SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 1873 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1049.46ms IncrementalHoareTripleChecker+Time [2021-08-30 19:10:19,358 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [308 Valid, 296 Invalid, 1962 Unknown, 0 Unchecked, 9.45ms Time], IncrementalHoareTripleChecker [89 Valid, 1873 Invalid, 0 Unknown, 0 Unchecked, 1049.46ms Time] [2021-08-30 19:10:19,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 544 states. [2021-08-30 19:10:19,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 544 to 506. [2021-08-30 19:10:19,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 506 states, 398 states have (on average 1.2487437185929648) internal successors, (497), 406 states have internal predecessors, (497), 60 states have call successors, (60), 43 states have call predecessors, (60), 47 states have return successors, (70), 57 states have call predecessors, (70), 54 states have call successors, (70) [2021-08-30 19:10:19,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 506 states to 506 states and 627 transitions. [2021-08-30 19:10:19,368 INFO L78 Accepts]: Start accepts. Automaton has 506 states and 627 transitions. Word has length 61 [2021-08-30 19:10:19,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 19:10:19,368 INFO L470 AbstractCegarLoop]: Abstraction has 506 states and 627 transitions. [2021-08-30 19:10:19,369 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.5) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (10), 7 states have call predecessors, (10), 3 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) [2021-08-30 19:10:19,369 INFO L276 IsEmpty]: Start isEmpty. Operand 506 states and 627 transitions. [2021-08-30 19:10:19,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-08-30 19:10:19,370 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 19:10:19,370 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 19:10:19,370 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-08-30 19:10:19,370 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-08-30 19:10:19,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 19:10:19,371 INFO L82 PathProgramCache]: Analyzing trace with hash 456516591, now seen corresponding path program 1 times [2021-08-30 19:10:19,371 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 19:10:19,371 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174899045] [2021-08-30 19:10:19,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:10:19,371 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 19:10:19,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:19,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:10:19,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:19,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-08-30 19:10:19,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:19,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-08-30 19:10:19,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:19,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-08-30 19:10:19,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:19,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-08-30 19:10:19,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:19,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 19:10:19,610 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 19:10:19,610 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174899045] [2021-08-30 19:10:19,610 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174899045] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 19:10:19,610 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 19:10:19,610 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-08-30 19:10:19,610 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966935116] [2021-08-30 19:10:19,612 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-08-30 19:10:19,613 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 19:10:19,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-08-30 19:10:19,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2021-08-30 19:10:19,614 INFO L87 Difference]: Start difference. First operand 506 states and 627 transitions. Second operand has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 6 states have internal predecessors, (43), 2 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2021-08-30 19:10:20,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 19:10:20,819 INFO L93 Difference]: Finished difference Result 568 states and 708 transitions. [2021-08-30 19:10:20,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-08-30 19:10:20,820 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 6 states have internal predecessors, (43), 2 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) Word has length 55 [2021-08-30 19:10:20,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 19:10:20,822 INFO L225 Difference]: With dead ends: 568 [2021-08-30 19:10:20,823 INFO L226 Difference]: Without dead ends: 567 [2021-08-30 19:10:20,823 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 235.25ms TimeCoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2021-08-30 19:10:20,823 INFO L928 BasicCegarLoop]: 80 mSDtfsCounter, 344 mSDsluCounter, 1364 mSDsCounter, 0 mSdLazyCounter, 2460 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 884.63ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 350 SdHoareTripleChecker+Valid, 572 SdHoareTripleChecker+Invalid, 2575 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.57ms SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 2460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1079.88ms IncrementalHoareTripleChecker+Time [2021-08-30 19:10:20,824 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [350 Valid, 572 Invalid, 2575 Unknown, 0 Unchecked, 11.57ms Time], IncrementalHoareTripleChecker [115 Valid, 2460 Invalid, 0 Unknown, 0 Unchecked, 1079.88ms Time] [2021-08-30 19:10:20,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 567 states. [2021-08-30 19:10:20,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 567 to 523. [2021-08-30 19:10:20,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 523 states, 413 states have (on average 1.2397094430992737) internal successors, (512), 421 states have internal predecessors, (512), 60 states have call successors, (60), 43 states have call predecessors, (60), 49 states have return successors, (77), 59 states have call predecessors, (77), 54 states have call successors, (77) [2021-08-30 19:10:20,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 523 states to 523 states and 649 transitions. [2021-08-30 19:10:20,836 INFO L78 Accepts]: Start accepts. Automaton has 523 states and 649 transitions. Word has length 55 [2021-08-30 19:10:20,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 19:10:20,837 INFO L470 AbstractCegarLoop]: Abstraction has 523 states and 649 transitions. [2021-08-30 19:10:20,837 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 6 states have internal predecessors, (43), 2 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2021-08-30 19:10:20,837 INFO L276 IsEmpty]: Start isEmpty. Operand 523 states and 649 transitions. [2021-08-30 19:10:20,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-08-30 19:10:20,838 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 19:10:20,838 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 19:10:20,839 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-08-30 19:10:20,839 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-08-30 19:10:20,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 19:10:20,839 INFO L82 PathProgramCache]: Analyzing trace with hash 456793421, now seen corresponding path program 1 times [2021-08-30 19:10:20,839 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 19:10:20,839 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396503150] [2021-08-30 19:10:20,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:10:20,840 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 19:10:20,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:20,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:10:20,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:20,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-08-30 19:10:20,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:20,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-08-30 19:10:20,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:21,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-08-30 19:10:21,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:21,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-08-30 19:10:21,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:21,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 19:10:21,068 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 19:10:21,068 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396503150] [2021-08-30 19:10:21,068 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396503150] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 19:10:21,068 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 19:10:21,068 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-08-30 19:10:21,068 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402234255] [2021-08-30 19:10:21,069 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-08-30 19:10:21,069 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 19:10:21,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-08-30 19:10:21,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2021-08-30 19:10:21,070 INFO L87 Difference]: Start difference. First operand 523 states and 649 transitions. Second operand has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 6 states have internal predecessors, (43), 2 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2021-08-30 19:10:22,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 19:10:22,330 INFO L93 Difference]: Finished difference Result 563 states and 696 transitions. [2021-08-30 19:10:22,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-30 19:10:22,331 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 6 states have internal predecessors, (43), 2 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) Word has length 55 [2021-08-30 19:10:22,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 19:10:22,334 INFO L225 Difference]: With dead ends: 563 [2021-08-30 19:10:22,334 INFO L226 Difference]: Without dead ends: 551 [2021-08-30 19:10:22,334 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 164.02ms TimeCoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2021-08-30 19:10:22,335 INFO L928 BasicCegarLoop]: 80 mSDtfsCounter, 368 mSDsluCounter, 1140 mSDsCounter, 0 mSdLazyCounter, 2833 mSolverCounterSat, 153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 994.33ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 371 SdHoareTripleChecker+Valid, 309 SdHoareTripleChecker+Invalid, 2986 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.38ms SdHoareTripleChecker+Time, 153 IncrementalHoareTripleChecker+Valid, 2833 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1209.36ms IncrementalHoareTripleChecker+Time [2021-08-30 19:10:22,336 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [371 Valid, 309 Invalid, 2986 Unknown, 0 Unchecked, 12.38ms Time], IncrementalHoareTripleChecker [153 Valid, 2833 Invalid, 0 Unknown, 0 Unchecked, 1209.36ms Time] [2021-08-30 19:10:22,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 551 states. [2021-08-30 19:10:22,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 551 to 520. [2021-08-30 19:10:22,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 520 states, 410 states have (on average 1.2414634146341463) internal successors, (509), 419 states have internal predecessors, (509), 60 states have call successors, (60), 43 states have call predecessors, (60), 49 states have return successors, (76), 58 states have call predecessors, (76), 54 states have call successors, (76) [2021-08-30 19:10:22,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 520 states to 520 states and 645 transitions. [2021-08-30 19:10:22,348 INFO L78 Accepts]: Start accepts. Automaton has 520 states and 645 transitions. Word has length 55 [2021-08-30 19:10:22,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 19:10:22,348 INFO L470 AbstractCegarLoop]: Abstraction has 520 states and 645 transitions. [2021-08-30 19:10:22,349 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 6 states have internal predecessors, (43), 2 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2021-08-30 19:10:22,349 INFO L276 IsEmpty]: Start isEmpty. Operand 520 states and 645 transitions. [2021-08-30 19:10:22,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-08-30 19:10:22,351 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 19:10:22,351 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 19:10:22,351 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-08-30 19:10:22,352 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-08-30 19:10:22,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 19:10:22,352 INFO L82 PathProgramCache]: Analyzing trace with hash 1713148089, now seen corresponding path program 1 times [2021-08-30 19:10:22,352 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 19:10:22,353 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180304428] [2021-08-30 19:10:22,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:10:22,353 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 19:10:22,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:22,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:10:22,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:22,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-08-30 19:10:22,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:22,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-08-30 19:10:22,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:22,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-08-30 19:10:22,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:22,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-08-30 19:10:22,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:22,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-08-30 19:10:22,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:22,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 19:10:22,596 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 19:10:22,596 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180304428] [2021-08-30 19:10:22,596 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180304428] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 19:10:22,596 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 19:10:22,596 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-08-30 19:10:22,598 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910209860] [2021-08-30 19:10:22,598 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-08-30 19:10:22,598 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 19:10:22,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-08-30 19:10:22,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-08-30 19:10:22,599 INFO L87 Difference]: Start difference. First operand 520 states and 645 transitions. Second operand has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (8), 8 states have call predecessors, (8), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2021-08-30 19:10:23,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 19:10:23,848 INFO L93 Difference]: Finished difference Result 563 states and 695 transitions. [2021-08-30 19:10:23,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-30 19:10:23,849 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (8), 8 states have call predecessors, (8), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 57 [2021-08-30 19:10:23,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 19:10:23,851 INFO L225 Difference]: With dead ends: 563 [2021-08-30 19:10:23,851 INFO L226 Difference]: Without dead ends: 523 [2021-08-30 19:10:23,851 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 226.66ms TimeCoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2021-08-30 19:10:23,852 INFO L928 BasicCegarLoop]: 63 mSDtfsCounter, 325 mSDsluCounter, 685 mSDsCounter, 0 mSdLazyCounter, 2480 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 971.31ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 336 SdHoareTripleChecker+Valid, 339 SdHoareTripleChecker+Invalid, 2591 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.93ms SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 2480 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1158.23ms IncrementalHoareTripleChecker+Time [2021-08-30 19:10:23,852 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [336 Valid, 339 Invalid, 2591 Unknown, 0 Unchecked, 10.93ms Time], IncrementalHoareTripleChecker [111 Valid, 2480 Invalid, 0 Unknown, 0 Unchecked, 1158.23ms Time] [2021-08-30 19:10:23,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 523 states. [2021-08-30 19:10:23,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 523 to 496. [2021-08-30 19:10:23,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 496 states, 392 states have (on average 1.2372448979591837) internal successors, (485), 400 states have internal predecessors, (485), 58 states have call successors, (58), 41 states have call predecessors, (58), 45 states have return successors, (72), 55 states have call predecessors, (72), 52 states have call successors, (72) [2021-08-30 19:10:23,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 496 states to 496 states and 615 transitions. [2021-08-30 19:10:23,863 INFO L78 Accepts]: Start accepts. Automaton has 496 states and 615 transitions. Word has length 57 [2021-08-30 19:10:23,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 19:10:23,863 INFO L470 AbstractCegarLoop]: Abstraction has 496 states and 615 transitions. [2021-08-30 19:10:23,863 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (8), 8 states have call predecessors, (8), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2021-08-30 19:10:23,863 INFO L276 IsEmpty]: Start isEmpty. Operand 496 states and 615 transitions. [2021-08-30 19:10:23,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-08-30 19:10:23,864 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 19:10:23,864 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 19:10:23,865 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-08-30 19:10:23,865 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-08-30 19:10:23,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 19:10:23,865 INFO L82 PathProgramCache]: Analyzing trace with hash 471512753, now seen corresponding path program 1 times [2021-08-30 19:10:23,866 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 19:10:23,866 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344903953] [2021-08-30 19:10:23,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:10:23,866 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 19:10:23,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:23,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:10:23,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:24,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-08-30 19:10:24,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:24,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-08-30 19:10:24,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:24,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-08-30 19:10:24,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:24,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-08-30 19:10:24,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:24,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 19:10:24,078 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 19:10:24,078 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344903953] [2021-08-30 19:10:24,078 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344903953] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 19:10:24,078 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 19:10:24,078 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-08-30 19:10:24,079 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105198197] [2021-08-30 19:10:24,079 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-08-30 19:10:24,079 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 19:10:24,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-30 19:10:24,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-08-30 19:10:24,080 INFO L87 Difference]: Start difference. First operand 496 states and 615 transitions. Second operand has 10 states, 10 states have (on average 4.4) internal successors, (44), 5 states have internal predecessors, (44), 3 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2021-08-30 19:10:25,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 19:10:25,384 INFO L93 Difference]: Finished difference Result 527 states and 650 transitions. [2021-08-30 19:10:25,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-08-30 19:10:25,385 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.4) internal successors, (44), 5 states have internal predecessors, (44), 3 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) Word has length 56 [2021-08-30 19:10:25,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 19:10:25,387 INFO L225 Difference]: With dead ends: 527 [2021-08-30 19:10:25,387 INFO L226 Difference]: Without dead ends: 513 [2021-08-30 19:10:25,388 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 525.60ms TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2021-08-30 19:10:25,388 INFO L928 BasicCegarLoop]: 59 mSDtfsCounter, 833 mSDsluCounter, 374 mSDsCounter, 0 mSdLazyCounter, 1425 mSolverCounterSat, 250 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 724.98ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 845 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 1675 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.68ms SdHoareTripleChecker+Time, 250 IncrementalHoareTripleChecker+Valid, 1425 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 879.86ms IncrementalHoareTripleChecker+Time [2021-08-30 19:10:25,389 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [845 Valid, 76 Invalid, 1675 Unknown, 0 Unchecked, 6.68ms Time], IncrementalHoareTripleChecker [250 Valid, 1425 Invalid, 0 Unknown, 0 Unchecked, 879.86ms Time] [2021-08-30 19:10:25,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 513 states. [2021-08-30 19:10:25,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 513 to 478. [2021-08-30 19:10:25,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 478 states, 377 states have (on average 1.2413793103448276) internal successors, (468), 384 states have internal predecessors, (468), 57 states have call successors, (57), 41 states have call predecessors, (57), 43 states have return successors, (65), 53 states have call predecessors, (65), 51 states have call successors, (65) [2021-08-30 19:10:25,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 478 states to 478 states and 590 transitions. [2021-08-30 19:10:25,398 INFO L78 Accepts]: Start accepts. Automaton has 478 states and 590 transitions. Word has length 56 [2021-08-30 19:10:25,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 19:10:25,398 INFO L470 AbstractCegarLoop]: Abstraction has 478 states and 590 transitions. [2021-08-30 19:10:25,398 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.4) internal successors, (44), 5 states have internal predecessors, (44), 3 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2021-08-30 19:10:25,399 INFO L276 IsEmpty]: Start isEmpty. Operand 478 states and 590 transitions. [2021-08-30 19:10:25,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-08-30 19:10:25,400 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 19:10:25,400 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 19:10:25,400 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-08-30 19:10:25,400 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-08-30 19:10:25,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 19:10:25,401 INFO L82 PathProgramCache]: Analyzing trace with hash -70909626, now seen corresponding path program 1 times [2021-08-30 19:10:25,401 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 19:10:25,402 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554278731] [2021-08-30 19:10:25,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:10:25,402 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 19:10:25,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:25,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:10:25,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:25,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-08-30 19:10:25,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:25,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-08-30 19:10:25,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:25,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-08-30 19:10:25,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:25,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-08-30 19:10:25,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:25,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-08-30 19:10:25,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:25,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-08-30 19:10:25,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:25,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 19:10:25,617 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 19:10:25,617 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554278731] [2021-08-30 19:10:25,617 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554278731] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 19:10:25,617 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 19:10:25,617 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-08-30 19:10:25,618 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264681496] [2021-08-30 19:10:25,618 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-08-30 19:10:25,618 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 19:10:25,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-08-30 19:10:25,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-08-30 19:10:25,619 INFO L87 Difference]: Start difference. First operand 478 states and 590 transitions. Second operand has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (11), 9 states have call predecessors, (11), 4 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) [2021-08-30 19:10:26,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 19:10:26,921 INFO L93 Difference]: Finished difference Result 511 states and 631 transitions. [2021-08-30 19:10:26,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-30 19:10:26,921 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (11), 9 states have call predecessors, (11), 4 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) Word has length 65 [2021-08-30 19:10:26,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 19:10:26,923 INFO L225 Difference]: With dead ends: 511 [2021-08-30 19:10:26,923 INFO L226 Difference]: Without dead ends: 511 [2021-08-30 19:10:26,924 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 375.34ms TimeCoverageRelationStatistics Valid=106, Invalid=314, Unknown=0, NotChecked=0, Total=420 [2021-08-30 19:10:26,924 INFO L928 BasicCegarLoop]: 51 mSDtfsCounter, 525 mSDsluCounter, 471 mSDsCounter, 0 mSdLazyCounter, 1838 mSolverCounterSat, 159 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 879.32ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 536 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 1997 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.38ms SdHoareTripleChecker+Time, 159 IncrementalHoareTripleChecker+Valid, 1838 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1029.95ms IncrementalHoareTripleChecker+Time [2021-08-30 19:10:26,924 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [536 Valid, 65 Invalid, 1997 Unknown, 0 Unchecked, 7.38ms Time], IncrementalHoareTripleChecker [159 Valid, 1838 Invalid, 0 Unknown, 0 Unchecked, 1029.95ms Time] [2021-08-30 19:10:26,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 511 states. [2021-08-30 19:10:26,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 511 to 478. [2021-08-30 19:10:26,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 478 states, 377 states have (on average 1.2360742705570291) internal successors, (466), 384 states have internal predecessors, (466), 57 states have call successors, (57), 41 states have call predecessors, (57), 43 states have return successors, (65), 53 states have call predecessors, (65), 51 states have call successors, (65) [2021-08-30 19:10:26,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 478 states to 478 states and 588 transitions. [2021-08-30 19:10:26,933 INFO L78 Accepts]: Start accepts. Automaton has 478 states and 588 transitions. Word has length 65 [2021-08-30 19:10:26,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 19:10:26,933 INFO L470 AbstractCegarLoop]: Abstraction has 478 states and 588 transitions. [2021-08-30 19:10:26,934 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (11), 9 states have call predecessors, (11), 4 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) [2021-08-30 19:10:26,934 INFO L276 IsEmpty]: Start isEmpty. Operand 478 states and 588 transitions. [2021-08-30 19:10:26,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-08-30 19:10:26,935 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 19:10:26,935 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 19:10:26,935 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-08-30 19:10:26,935 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-08-30 19:10:26,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 19:10:26,936 INFO L82 PathProgramCache]: Analyzing trace with hash -876554703, now seen corresponding path program 1 times [2021-08-30 19:10:26,936 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 19:10:26,936 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902781649] [2021-08-30 19:10:26,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:10:26,936 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 19:10:26,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:27,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:10:27,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:27,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-08-30 19:10:27,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:27,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-08-30 19:10:27,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:27,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-08-30 19:10:27,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:27,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-08-30 19:10:27,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:27,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 19:10:27,178 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 19:10:27,179 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902781649] [2021-08-30 19:10:27,179 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902781649] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 19:10:27,179 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 19:10:27,179 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-08-30 19:10:27,179 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017060620] [2021-08-30 19:10:27,180 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-08-30 19:10:27,180 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 19:10:27,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-08-30 19:10:27,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2021-08-30 19:10:27,181 INFO L87 Difference]: Start difference. First operand 478 states and 588 transitions. Second operand has 14 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 7 states have internal predecessors, (48), 2 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2021-08-30 19:10:28,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 19:10:28,438 INFO L93 Difference]: Finished difference Result 519 states and 636 transitions. [2021-08-30 19:10:28,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-08-30 19:10:28,439 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 7 states have internal predecessors, (48), 2 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) Word has length 60 [2021-08-30 19:10:28,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 19:10:28,441 INFO L225 Difference]: With dead ends: 519 [2021-08-30 19:10:28,441 INFO L226 Difference]: Without dead ends: 501 [2021-08-30 19:10:28,442 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 180.77ms TimeCoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2021-08-30 19:10:28,442 INFO L928 BasicCegarLoop]: 74 mSDtfsCounter, 355 mSDsluCounter, 1190 mSDsCounter, 0 mSdLazyCounter, 2984 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 986.41ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 358 SdHoareTripleChecker+Valid, 321 SdHoareTripleChecker+Invalid, 3122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.93ms SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 2984 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1198.77ms IncrementalHoareTripleChecker+Time [2021-08-30 19:10:28,442 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [358 Valid, 321 Invalid, 3122 Unknown, 0 Unchecked, 11.93ms Time], IncrementalHoareTripleChecker [138 Valid, 2984 Invalid, 0 Unknown, 0 Unchecked, 1198.77ms Time] [2021-08-30 19:10:28,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 501 states. [2021-08-30 19:10:28,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 501 to 474. [2021-08-30 19:10:28,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 474 states, 374 states have (on average 1.2352941176470589) internal successors, (462), 381 states have internal predecessors, (462), 56 states have call successors, (56), 41 states have call predecessors, (56), 43 states have return successors, (64), 52 states have call predecessors, (64), 50 states have call successors, (64) [2021-08-30 19:10:28,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 474 states to 474 states and 582 transitions. [2021-08-30 19:10:28,458 INFO L78 Accepts]: Start accepts. Automaton has 474 states and 582 transitions. Word has length 60 [2021-08-30 19:10:28,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 19:10:28,458 INFO L470 AbstractCegarLoop]: Abstraction has 474 states and 582 transitions. [2021-08-30 19:10:28,459 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 7 states have internal predecessors, (48), 2 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2021-08-30 19:10:28,459 INFO L276 IsEmpty]: Start isEmpty. Operand 474 states and 582 transitions. [2021-08-30 19:10:28,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-08-30 19:10:28,460 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 19:10:28,460 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 19:10:28,460 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-08-30 19:10:28,461 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-08-30 19:10:28,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 19:10:28,461 INFO L82 PathProgramCache]: Analyzing trace with hash -863080833, now seen corresponding path program 1 times [2021-08-30 19:10:28,461 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 19:10:28,461 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195417969] [2021-08-30 19:10:28,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:10:28,462 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 19:10:28,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:28,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:10:28,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:28,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-08-30 19:10:28,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:28,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-08-30 19:10:28,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:28,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-08-30 19:10:28,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:28,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-08-30 19:10:28,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:28,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-08-30 19:10:28,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:28,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-08-30 19:10:28,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:28,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 19:10:28,701 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 19:10:28,701 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195417969] [2021-08-30 19:10:28,701 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195417969] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 19:10:28,701 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 19:10:28,701 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-08-30 19:10:28,701 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555226895] [2021-08-30 19:10:28,702 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-08-30 19:10:28,702 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 19:10:28,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-08-30 19:10:28,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-08-30 19:10:28,703 INFO L87 Difference]: Start difference. First operand 474 states and 582 transitions. Second operand has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (11), 8 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2021-08-30 19:10:29,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 19:10:29,930 INFO L93 Difference]: Finished difference Result 526 states and 647 transitions. [2021-08-30 19:10:29,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-08-30 19:10:29,931 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (11), 8 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) Word has length 68 [2021-08-30 19:10:29,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 19:10:29,932 INFO L225 Difference]: With dead ends: 526 [2021-08-30 19:10:29,932 INFO L226 Difference]: Without dead ends: 526 [2021-08-30 19:10:29,932 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 251.82ms TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2021-08-30 19:10:29,933 INFO L928 BasicCegarLoop]: 68 mSDtfsCounter, 424 mSDsluCounter, 1089 mSDsCounter, 0 mSdLazyCounter, 2226 mSolverCounterSat, 157 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 899.96ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 432 SdHoareTripleChecker+Valid, 355 SdHoareTripleChecker+Invalid, 2383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.51ms SdHoareTripleChecker+Time, 157 IncrementalHoareTripleChecker+Valid, 2226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1081.65ms IncrementalHoareTripleChecker+Time [2021-08-30 19:10:29,933 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [432 Valid, 355 Invalid, 2383 Unknown, 0 Unchecked, 10.51ms Time], IncrementalHoareTripleChecker [157 Valid, 2226 Invalid, 0 Unknown, 0 Unchecked, 1081.65ms Time] [2021-08-30 19:10:29,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526 states. [2021-08-30 19:10:29,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526 to 474. [2021-08-30 19:10:29,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 474 states, 374 states have (on average 1.2299465240641712) internal successors, (460), 381 states have internal predecessors, (460), 56 states have call successors, (56), 41 states have call predecessors, (56), 43 states have return successors, (64), 52 states have call predecessors, (64), 50 states have call successors, (64) [2021-08-30 19:10:29,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 474 states to 474 states and 580 transitions. [2021-08-30 19:10:29,942 INFO L78 Accepts]: Start accepts. Automaton has 474 states and 580 transitions. Word has length 68 [2021-08-30 19:10:29,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 19:10:29,942 INFO L470 AbstractCegarLoop]: Abstraction has 474 states and 580 transitions. [2021-08-30 19:10:29,942 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (11), 8 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2021-08-30 19:10:29,943 INFO L276 IsEmpty]: Start isEmpty. Operand 474 states and 580 transitions. [2021-08-30 19:10:29,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-08-30 19:10:29,943 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 19:10:29,944 INFO L513 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] [2021-08-30 19:10:29,944 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-08-30 19:10:29,944 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-08-30 19:10:29,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 19:10:29,944 INFO L82 PathProgramCache]: Analyzing trace with hash -1815591607, now seen corresponding path program 1 times [2021-08-30 19:10:29,945 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 19:10:29,945 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644026818] [2021-08-30 19:10:29,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:10:29,945 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 19:10:29,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:30,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:10:30,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:30,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-08-30 19:10:30,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:30,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-08-30 19:10:30,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:30,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-08-30 19:10:30,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:30,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-08-30 19:10:30,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:30,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 19:10:30,179 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 19:10:30,179 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644026818] [2021-08-30 19:10:30,179 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644026818] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 19:10:30,179 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 19:10:30,179 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-08-30 19:10:30,179 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630267150] [2021-08-30 19:10:30,181 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-08-30 19:10:30,181 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 19:10:30,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-08-30 19:10:30,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2021-08-30 19:10:30,182 INFO L87 Difference]: Start difference. First operand 474 states and 580 transitions. Second operand has 14 states, 14 states have (on average 3.5) internal successors, (49), 7 states have internal predecessors, (49), 2 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2021-08-30 19:10:31,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 19:10:31,433 INFO L93 Difference]: Finished difference Result 515 states and 628 transitions. [2021-08-30 19:10:31,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-08-30 19:10:31,433 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.5) internal successors, (49), 7 states have internal predecessors, (49), 2 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) Word has length 61 [2021-08-30 19:10:31,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 19:10:31,434 INFO L225 Difference]: With dead ends: 515 [2021-08-30 19:10:31,436 INFO L226 Difference]: Without dead ends: 496 [2021-08-30 19:10:31,437 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 175.21ms TimeCoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2021-08-30 19:10:31,437 INFO L928 BasicCegarLoop]: 73 mSDtfsCounter, 441 mSDsluCounter, 1307 mSDsCounter, 0 mSdLazyCounter, 3112 mSolverCounterSat, 173 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 985.70ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 444 SdHoareTripleChecker+Valid, 330 SdHoareTripleChecker+Invalid, 3285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.13ms SdHoareTripleChecker+Time, 173 IncrementalHoareTripleChecker+Valid, 3112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1194.25ms IncrementalHoareTripleChecker+Time [2021-08-30 19:10:31,438 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [444 Valid, 330 Invalid, 3285 Unknown, 0 Unchecked, 12.13ms Time], IncrementalHoareTripleChecker [173 Valid, 3112 Invalid, 0 Unknown, 0 Unchecked, 1194.25ms Time] [2021-08-30 19:10:31,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 496 states. [2021-08-30 19:10:31,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 496 to 469. [2021-08-30 19:10:31,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 469 states, 370 states have (on average 1.2297297297297298) internal successors, (455), 377 states have internal predecessors, (455), 55 states have call successors, (55), 41 states have call predecessors, (55), 43 states have return successors, (63), 51 states have call predecessors, (63), 49 states have call successors, (63) [2021-08-30 19:10:31,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 469 states to 469 states and 573 transitions. [2021-08-30 19:10:31,448 INFO L78 Accepts]: Start accepts. Automaton has 469 states and 573 transitions. Word has length 61 [2021-08-30 19:10:31,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 19:10:31,448 INFO L470 AbstractCegarLoop]: Abstraction has 469 states and 573 transitions. [2021-08-30 19:10:31,448 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.5) internal successors, (49), 7 states have internal predecessors, (49), 2 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2021-08-30 19:10:31,448 INFO L276 IsEmpty]: Start isEmpty. Operand 469 states and 573 transitions. [2021-08-30 19:10:31,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-08-30 19:10:31,449 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 19:10:31,449 INFO L513 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] [2021-08-30 19:10:31,450 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-08-30 19:10:31,450 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-08-30 19:10:31,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 19:10:31,450 INFO L82 PathProgramCache]: Analyzing trace with hash 1549264219, now seen corresponding path program 1 times [2021-08-30 19:10:31,451 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 19:10:31,451 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180687835] [2021-08-30 19:10:31,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:10:31,451 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 19:10:31,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:31,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:10:31,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:31,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-08-30 19:10:31,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:31,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-08-30 19:10:31,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:31,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-08-30 19:10:31,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:31,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-08-30 19:10:31,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:31,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 19:10:31,661 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 19:10:31,661 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180687835] [2021-08-30 19:10:31,661 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180687835] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 19:10:31,661 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 19:10:31,661 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-08-30 19:10:31,661 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911262299] [2021-08-30 19:10:31,662 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-08-30 19:10:31,662 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 19:10:31,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-08-30 19:10:31,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2021-08-30 19:10:31,663 INFO L87 Difference]: Start difference. First operand 469 states and 573 transitions. Second operand has 14 states, 14 states have (on average 3.5) internal successors, (49), 7 states have internal predecessors, (49), 2 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2021-08-30 19:10:32,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 19:10:32,783 INFO L93 Difference]: Finished difference Result 510 states and 621 transitions. [2021-08-30 19:10:32,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-08-30 19:10:32,783 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.5) internal successors, (49), 7 states have internal predecessors, (49), 2 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) Word has length 61 [2021-08-30 19:10:32,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 19:10:32,785 INFO L225 Difference]: With dead ends: 510 [2021-08-30 19:10:32,785 INFO L226 Difference]: Without dead ends: 492 [2021-08-30 19:10:32,785 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 161.39ms TimeCoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2021-08-30 19:10:32,786 INFO L928 BasicCegarLoop]: 70 mSDtfsCounter, 312 mSDsluCounter, 1146 mSDsCounter, 0 mSdLazyCounter, 2884 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 881.65ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 315 SdHoareTripleChecker+Valid, 303 SdHoareTripleChecker+Invalid, 2987 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.52ms SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 2884 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1071.03ms IncrementalHoareTripleChecker+Time [2021-08-30 19:10:32,786 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [315 Valid, 303 Invalid, 2987 Unknown, 0 Unchecked, 10.52ms Time], IncrementalHoareTripleChecker [103 Valid, 2884 Invalid, 0 Unknown, 0 Unchecked, 1071.03ms Time] [2021-08-30 19:10:32,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492 states. [2021-08-30 19:10:32,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492 to 465. [2021-08-30 19:10:32,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 465 states, 367 states have (on average 1.228882833787466) internal successors, (451), 374 states have internal predecessors, (451), 54 states have call successors, (54), 41 states have call predecessors, (54), 43 states have return successors, (62), 50 states have call predecessors, (62), 48 states have call successors, (62) [2021-08-30 19:10:32,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 465 states to 465 states and 567 transitions. [2021-08-30 19:10:32,795 INFO L78 Accepts]: Start accepts. Automaton has 465 states and 567 transitions. Word has length 61 [2021-08-30 19:10:32,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 19:10:32,795 INFO L470 AbstractCegarLoop]: Abstraction has 465 states and 567 transitions. [2021-08-30 19:10:32,795 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.5) internal successors, (49), 7 states have internal predecessors, (49), 2 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2021-08-30 19:10:32,795 INFO L276 IsEmpty]: Start isEmpty. Operand 465 states and 567 transitions. [2021-08-30 19:10:32,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-08-30 19:10:32,796 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 19:10:32,797 INFO L513 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] [2021-08-30 19:10:32,797 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-08-30 19:10:32,797 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-08-30 19:10:32,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 19:10:32,797 INFO L82 PathProgramCache]: Analyzing trace with hash -1654833550, now seen corresponding path program 1 times [2021-08-30 19:10:32,797 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 19:10:32,798 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404236343] [2021-08-30 19:10:32,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:10:32,798 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 19:10:32,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:32,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:10:32,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:32,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-08-30 19:10:32,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:32,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-08-30 19:10:32,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:32,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-08-30 19:10:32,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:32,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-08-30 19:10:32,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:32,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-08-30 19:10:32,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:32,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-08-30 19:10:32,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:32,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 19:10:32,985 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 19:10:32,985 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404236343] [2021-08-30 19:10:32,985 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404236343] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 19:10:32,985 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 19:10:32,986 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-08-30 19:10:32,986 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101397529] [2021-08-30 19:10:32,987 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-08-30 19:10:32,987 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 19:10:32,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-30 19:10:32,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-08-30 19:10:32,988 INFO L87 Difference]: Start difference. First operand 465 states and 567 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (12), 9 states have call predecessors, (12), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-08-30 19:10:33,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 19:10:33,933 INFO L93 Difference]: Finished difference Result 636 states and 773 transitions. [2021-08-30 19:10:33,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-30 19:10:33,934 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (12), 9 states have call predecessors, (12), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 67 [2021-08-30 19:10:33,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 19:10:33,936 INFO L225 Difference]: With dead ends: 636 [2021-08-30 19:10:33,936 INFO L226 Difference]: Without dead ends: 636 [2021-08-30 19:10:33,936 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 202.96ms TimeCoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2021-08-30 19:10:33,937 INFO L928 BasicCegarLoop]: 57 mSDtfsCounter, 665 mSDsluCounter, 428 mSDsCounter, 0 mSdLazyCounter, 1297 mSolverCounterSat, 215 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 698.51ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 676 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 1512 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.14ms SdHoareTripleChecker+Time, 215 IncrementalHoareTripleChecker+Valid, 1297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 825.11ms IncrementalHoareTripleChecker+Time [2021-08-30 19:10:33,937 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [676 Valid, 94 Invalid, 1512 Unknown, 0 Unchecked, 6.14ms Time], IncrementalHoareTripleChecker [215 Valid, 1297 Invalid, 0 Unknown, 0 Unchecked, 825.11ms Time] [2021-08-30 19:10:33,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 636 states. [2021-08-30 19:10:33,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 636 to 586. [2021-08-30 19:10:33,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 586 states, 460 states have (on average 1.2195652173913043) internal successors, (561), 469 states have internal predecessors, (561), 67 states have call successors, (67), 51 states have call predecessors, (67), 58 states have return successors, (87), 66 states have call predecessors, (87), 62 states have call successors, (87) [2021-08-30 19:10:33,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 586 states to 586 states and 715 transitions. [2021-08-30 19:10:33,948 INFO L78 Accepts]: Start accepts. Automaton has 586 states and 715 transitions. Word has length 67 [2021-08-30 19:10:33,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 19:10:33,949 INFO L470 AbstractCegarLoop]: Abstraction has 586 states and 715 transitions. [2021-08-30 19:10:33,949 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (12), 9 states have call predecessors, (12), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-08-30 19:10:33,949 INFO L276 IsEmpty]: Start isEmpty. Operand 586 states and 715 transitions. [2021-08-30 19:10:33,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-08-30 19:10:33,950 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 19:10:33,950 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 19:10:33,950 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-08-30 19:10:33,951 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-08-30 19:10:33,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 19:10:33,951 INFO L82 PathProgramCache]: Analyzing trace with hash 2014934282, now seen corresponding path program 1 times [2021-08-30 19:10:33,951 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 19:10:33,951 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591242730] [2021-08-30 19:10:33,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:10:33,952 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 19:10:33,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:34,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:10:34,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:34,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-08-30 19:10:34,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:34,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-08-30 19:10:34,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:34,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-08-30 19:10:34,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:34,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-08-30 19:10:34,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:34,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 19:10:34,208 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 19:10:34,209 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591242730] [2021-08-30 19:10:34,209 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591242730] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 19:10:34,209 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 19:10:34,209 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-08-30 19:10:34,209 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125222107] [2021-08-30 19:10:34,209 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-08-30 19:10:34,210 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 19:10:34,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-08-30 19:10:34,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2021-08-30 19:10:34,210 INFO L87 Difference]: Start difference. First operand 586 states and 715 transitions. Second operand has 14 states, 14 states have (on average 3.7857142857142856) internal successors, (53), 7 states have internal predecessors, (53), 2 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2021-08-30 19:10:35,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 19:10:35,573 INFO L93 Difference]: Finished difference Result 627 states and 764 transitions. [2021-08-30 19:10:35,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-08-30 19:10:35,573 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.7857142857142856) internal successors, (53), 7 states have internal predecessors, (53), 2 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) Word has length 65 [2021-08-30 19:10:35,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 19:10:35,575 INFO L225 Difference]: With dead ends: 627 [2021-08-30 19:10:35,575 INFO L226 Difference]: Without dead ends: 587 [2021-08-30 19:10:35,576 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 192.12ms TimeCoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2021-08-30 19:10:35,576 INFO L928 BasicCegarLoop]: 65 mSDtfsCounter, 309 mSDsluCounter, 1191 mSDsCounter, 0 mSdLazyCounter, 3238 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1085.99ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 314 SdHoareTripleChecker+Valid, 304 SdHoareTripleChecker+Invalid, 3357 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.75ms SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 3238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1303.84ms IncrementalHoareTripleChecker+Time [2021-08-30 19:10:35,576 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [314 Valid, 304 Invalid, 3357 Unknown, 0 Unchecked, 12.75ms Time], IncrementalHoareTripleChecker [119 Valid, 3238 Invalid, 0 Unknown, 0 Unchecked, 1303.84ms Time] [2021-08-30 19:10:35,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 587 states. [2021-08-30 19:10:35,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 587 to 560. [2021-08-30 19:10:35,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 560 states, 439 states have (on average 1.2186788154897494) internal successors, (535), 448 states have internal predecessors, (535), 64 states have call successors, (64), 49 states have call predecessors, (64), 56 states have return successors, (84), 63 states have call predecessors, (84), 59 states have call successors, (84) [2021-08-30 19:10:35,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 683 transitions. [2021-08-30 19:10:35,586 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 683 transitions. Word has length 65 [2021-08-30 19:10:35,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 19:10:35,586 INFO L470 AbstractCegarLoop]: Abstraction has 560 states and 683 transitions. [2021-08-30 19:10:35,586 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.7857142857142856) internal successors, (53), 7 states have internal predecessors, (53), 2 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2021-08-30 19:10:35,586 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 683 transitions. [2021-08-30 19:10:35,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-08-30 19:10:35,588 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 19:10:35,588 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 19:10:35,588 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-08-30 19:10:35,588 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-08-30 19:10:35,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 19:10:35,589 INFO L82 PathProgramCache]: Analyzing trace with hash 1554016619, now seen corresponding path program 1 times [2021-08-30 19:10:35,589 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 19:10:35,589 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550980301] [2021-08-30 19:10:35,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:10:35,589 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 19:10:35,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:35,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:10:35,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:35,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-08-30 19:10:35,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:35,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-08-30 19:10:35,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:35,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-08-30 19:10:35,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:35,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-08-30 19:10:35,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:35,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-08-30 19:10:35,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:35,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-08-30 19:10:35,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:35,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-08-30 19:10:35,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:35,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 19:10:35,813 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 19:10:35,813 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550980301] [2021-08-30 19:10:35,813 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550980301] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 19:10:35,814 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 19:10:35,814 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-08-30 19:10:35,814 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262474152] [2021-08-30 19:10:35,814 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-08-30 19:10:35,814 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 19:10:35,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-08-30 19:10:35,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2021-08-30 19:10:35,815 INFO L87 Difference]: Start difference. First operand 560 states and 683 transitions. Second operand has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 6 states have internal predecessors, (59), 4 states have call successors, (12), 10 states have call predecessors, (12), 4 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2021-08-30 19:10:37,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 19:10:37,368 INFO L93 Difference]: Finished difference Result 575 states and 695 transitions. [2021-08-30 19:10:37,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-08-30 19:10:37,369 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 6 states have internal predecessors, (59), 4 states have call successors, (12), 10 states have call predecessors, (12), 4 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) Word has length 79 [2021-08-30 19:10:37,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 19:10:37,371 INFO L225 Difference]: With dead ends: 575 [2021-08-30 19:10:37,371 INFO L226 Difference]: Without dead ends: 575 [2021-08-30 19:10:37,372 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 534.36ms TimeCoverageRelationStatistics Valid=204, Invalid=498, Unknown=0, NotChecked=0, Total=702 [2021-08-30 19:10:37,372 INFO L928 BasicCegarLoop]: 60 mSDtfsCounter, 712 mSDsluCounter, 871 mSDsCounter, 0 mSdLazyCounter, 2334 mSolverCounterSat, 221 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 936.91ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 723 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 2555 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.85ms SdHoareTripleChecker+Time, 221 IncrementalHoareTripleChecker+Valid, 2334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1114.53ms IncrementalHoareTripleChecker+Time [2021-08-30 19:10:37,372 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [723 Valid, 80 Invalid, 2555 Unknown, 0 Unchecked, 8.85ms Time], IncrementalHoareTripleChecker [221 Valid, 2334 Invalid, 0 Unknown, 0 Unchecked, 1114.53ms Time] [2021-08-30 19:10:37,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2021-08-30 19:10:37,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 542. [2021-08-30 19:10:37,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 542 states, 425 states have (on average 1.2188235294117646) internal successors, (518), 433 states have internal predecessors, (518), 62 states have call successors, (62), 49 states have call predecessors, (62), 54 states have return successors, (73), 60 states have call predecessors, (73), 57 states have call successors, (73) [2021-08-30 19:10:37,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 542 states to 542 states and 653 transitions. [2021-08-30 19:10:37,382 INFO L78 Accepts]: Start accepts. Automaton has 542 states and 653 transitions. Word has length 79 [2021-08-30 19:10:37,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 19:10:37,382 INFO L470 AbstractCegarLoop]: Abstraction has 542 states and 653 transitions. [2021-08-30 19:10:37,382 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 6 states have internal predecessors, (59), 4 states have call successors, (12), 10 states have call predecessors, (12), 4 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2021-08-30 19:10:37,382 INFO L276 IsEmpty]: Start isEmpty. Operand 542 states and 653 transitions. [2021-08-30 19:10:37,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-08-30 19:10:37,384 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 19:10:37,384 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 19:10:37,384 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-08-30 19:10:37,384 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-08-30 19:10:37,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 19:10:37,385 INFO L82 PathProgramCache]: Analyzing trace with hash -478221177, now seen corresponding path program 1 times [2021-08-30 19:10:37,385 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 19:10:37,385 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709478270] [2021-08-30 19:10:37,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:10:37,385 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 19:10:37,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:37,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:10:37,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:37,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-08-30 19:10:37,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:37,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-08-30 19:10:37,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:37,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-08-30 19:10:37,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:37,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-08-30 19:10:37,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:37,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-08-30 19:10:37,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:37,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-08-30 19:10:37,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:37,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-08-30 19:10:37,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:37,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-08-30 19:10:37,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:37,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 19:10:37,658 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 19:10:37,658 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709478270] [2021-08-30 19:10:37,658 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709478270] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 19:10:37,658 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 19:10:37,658 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-08-30 19:10:37,658 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180056950] [2021-08-30 19:10:37,659 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-08-30 19:10:37,659 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 19:10:37,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-08-30 19:10:37,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2021-08-30 19:10:37,659 INFO L87 Difference]: Start difference. First operand 542 states and 653 transitions. Second operand has 14 states, 14 states have (on average 4.071428571428571) internal successors, (57), 5 states have internal predecessors, (57), 2 states have call successors, (14), 10 states have call predecessors, (14), 2 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2021-08-30 19:10:38,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 19:10:38,914 INFO L93 Difference]: Finished difference Result 651 states and 821 transitions. [2021-08-30 19:10:38,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-08-30 19:10:38,915 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.071428571428571) internal successors, (57), 5 states have internal predecessors, (57), 2 states have call successors, (14), 10 states have call predecessors, (14), 2 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) Word has length 80 [2021-08-30 19:10:38,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 19:10:38,917 INFO L225 Difference]: With dead ends: 651 [2021-08-30 19:10:38,917 INFO L226 Difference]: Without dead ends: 651 [2021-08-30 19:10:38,918 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 299.82ms TimeCoverageRelationStatistics Valid=115, Invalid=391, Unknown=0, NotChecked=0, Total=506 [2021-08-30 19:10:38,918 INFO L928 BasicCegarLoop]: 69 mSDtfsCounter, 606 mSDsluCounter, 1210 mSDsCounter, 0 mSdLazyCounter, 2282 mSolverCounterSat, 199 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 908.25ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 617 SdHoareTripleChecker+Valid, 359 SdHoareTripleChecker+Invalid, 2481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.36ms SdHoareTripleChecker+Time, 199 IncrementalHoareTripleChecker+Valid, 2282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1078.76ms IncrementalHoareTripleChecker+Time [2021-08-30 19:10:38,918 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [617 Valid, 359 Invalid, 2481 Unknown, 0 Unchecked, 10.36ms Time], IncrementalHoareTripleChecker [199 Valid, 2282 Invalid, 0 Unknown, 0 Unchecked, 1078.76ms Time] [2021-08-30 19:10:38,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 651 states. [2021-08-30 19:10:38,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 651 to 506. [2021-08-30 19:10:38,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 506 states, 401 states have (on average 1.2194513715710724) internal successors, (489), 407 states have internal predecessors, (489), 55 states have call successors, (55), 43 states have call predecessors, (55), 49 states have return successors, (63), 56 states have call predecessors, (63), 51 states have call successors, (63) [2021-08-30 19:10:38,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 506 states to 506 states and 607 transitions. [2021-08-30 19:10:38,927 INFO L78 Accepts]: Start accepts. Automaton has 506 states and 607 transitions. Word has length 80 [2021-08-30 19:10:38,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 19:10:38,928 INFO L470 AbstractCegarLoop]: Abstraction has 506 states and 607 transitions. [2021-08-30 19:10:38,928 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.071428571428571) internal successors, (57), 5 states have internal predecessors, (57), 2 states have call successors, (14), 10 states have call predecessors, (14), 2 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2021-08-30 19:10:38,928 INFO L276 IsEmpty]: Start isEmpty. Operand 506 states and 607 transitions. [2021-08-30 19:10:38,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-08-30 19:10:38,929 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 19:10:38,930 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 19:10:38,930 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-08-30 19:10:38,930 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-08-30 19:10:38,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 19:10:38,930 INFO L82 PathProgramCache]: Analyzing trace with hash -998039197, now seen corresponding path program 1 times [2021-08-30 19:10:38,931 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 19:10:38,931 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137938912] [2021-08-30 19:10:38,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:10:38,931 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 19:10:38,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:39,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:10:39,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:39,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-08-30 19:10:39,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:39,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-08-30 19:10:39,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:39,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-08-30 19:10:39,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:39,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-08-30 19:10:39,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:39,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-08-30 19:10:39,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:39,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-08-30 19:10:39,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:39,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-08-30 19:10:39,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:39,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-08-30 19:10:39,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:39,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 19:10:39,207 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 19:10:39,207 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137938912] [2021-08-30 19:10:39,207 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137938912] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 19:10:39,208 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 19:10:39,208 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-30 19:10:39,208 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142300409] [2021-08-30 19:10:39,208 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-30 19:10:39,208 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 19:10:39,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-30 19:10:39,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2021-08-30 19:10:39,209 INFO L87 Difference]: Start difference. First operand 506 states and 607 transitions. Second operand has 16 states, 16 states have (on average 4.0625) internal successors, (65), 7 states have internal predecessors, (65), 3 states have call successors, (11), 9 states have call predecessors, (11), 3 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) [2021-08-30 19:10:40,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 19:10:40,606 INFO L93 Difference]: Finished difference Result 581 states and 696 transitions. [2021-08-30 19:10:40,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-08-30 19:10:40,606 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.0625) internal successors, (65), 7 states have internal predecessors, (65), 3 states have call successors, (11), 9 states have call predecessors, (11), 3 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) Word has length 85 [2021-08-30 19:10:40,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 19:10:40,608 INFO L225 Difference]: With dead ends: 581 [2021-08-30 19:10:40,608 INFO L226 Difference]: Without dead ends: 563 [2021-08-30 19:10:40,608 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 356.77ms TimeCoverageRelationStatistics Valid=101, Invalid=499, Unknown=0, NotChecked=0, Total=600 [2021-08-30 19:10:40,609 INFO L928 BasicCegarLoop]: 60 mSDtfsCounter, 344 mSDsluCounter, 1505 mSDsCounter, 0 mSdLazyCounter, 2830 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 981.09ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 352 SdHoareTripleChecker+Valid, 488 SdHoareTripleChecker+Invalid, 2945 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.47ms SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 2830 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1174.95ms IncrementalHoareTripleChecker+Time [2021-08-30 19:10:40,609 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [352 Valid, 488 Invalid, 2945 Unknown, 0 Unchecked, 12.47ms Time], IncrementalHoareTripleChecker [115 Valid, 2830 Invalid, 0 Unknown, 0 Unchecked, 1174.95ms Time] [2021-08-30 19:10:40,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2021-08-30 19:10:40,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 514. [2021-08-30 19:10:40,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 514 states, 408 states have (on average 1.2156862745098038) internal successors, (496), 414 states have internal predecessors, (496), 55 states have call successors, (55), 43 states have call predecessors, (55), 50 states have return successors, (66), 57 states have call predecessors, (66), 51 states have call successors, (66) [2021-08-30 19:10:40,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 514 states to 514 states and 617 transitions. [2021-08-30 19:10:40,617 INFO L78 Accepts]: Start accepts. Automaton has 514 states and 617 transitions. Word has length 85 [2021-08-30 19:10:40,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 19:10:40,617 INFO L470 AbstractCegarLoop]: Abstraction has 514 states and 617 transitions. [2021-08-30 19:10:40,617 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.0625) internal successors, (65), 7 states have internal predecessors, (65), 3 states have call successors, (11), 9 states have call predecessors, (11), 3 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) [2021-08-30 19:10:40,618 INFO L276 IsEmpty]: Start isEmpty. Operand 514 states and 617 transitions. [2021-08-30 19:10:40,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-08-30 19:10:40,619 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 19:10:40,619 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 19:10:40,619 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-08-30 19:10:40,619 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-08-30 19:10:40,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 19:10:40,620 INFO L82 PathProgramCache]: Analyzing trace with hash 2056891224, now seen corresponding path program 1 times [2021-08-30 19:10:40,620 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 19:10:40,620 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57832575] [2021-08-30 19:10:40,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:10:40,620 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 19:10:40,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:40,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:10:40,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:40,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-08-30 19:10:40,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:40,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-08-30 19:10:40,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:40,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-08-30 19:10:40,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:40,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-08-30 19:10:40,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:40,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-08-30 19:10:40,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:40,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-08-30 19:10:40,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:40,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 19:10:40,854 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 19:10:40,854 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57832575] [2021-08-30 19:10:40,854 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57832575] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 19:10:40,854 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 19:10:40,854 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-08-30 19:10:40,854 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004993544] [2021-08-30 19:10:40,855 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-08-30 19:10:40,855 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 19:10:40,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-08-30 19:10:40,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2021-08-30 19:10:40,856 INFO L87 Difference]: Start difference. First operand 514 states and 617 transitions. Second operand has 12 states, 12 states have (on average 5.333333333333333) internal successors, (64), 5 states have internal predecessors, (64), 5 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) [2021-08-30 19:10:41,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 19:10:41,986 INFO L93 Difference]: Finished difference Result 667 states and 781 transitions. [2021-08-30 19:10:41,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-08-30 19:10:41,986 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.333333333333333) internal successors, (64), 5 states have internal predecessors, (64), 5 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) Word has length 80 [2021-08-30 19:10:41,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 19:10:41,988 INFO L225 Difference]: With dead ends: 667 [2021-08-30 19:10:41,988 INFO L226 Difference]: Without dead ends: 667 [2021-08-30 19:10:41,988 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 325.73ms TimeCoverageRelationStatistics Valid=124, Invalid=338, Unknown=0, NotChecked=0, Total=462 [2021-08-30 19:10:41,989 INFO L928 BasicCegarLoop]: 42 mSDtfsCounter, 746 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 1748 mSolverCounterSat, 233 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 773.25ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 753 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 1981 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.27ms SdHoareTripleChecker+Time, 233 IncrementalHoareTripleChecker+Valid, 1748 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 918.44ms IncrementalHoareTripleChecker+Time [2021-08-30 19:10:41,989 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [753 Valid, 58 Invalid, 1981 Unknown, 0 Unchecked, 7.27ms Time], IncrementalHoareTripleChecker [233 Valid, 1748 Invalid, 0 Unknown, 0 Unchecked, 918.44ms Time] [2021-08-30 19:10:41,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 667 states. [2021-08-30 19:10:41,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 667 to 635. [2021-08-30 19:10:41,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 635 states, 505 states have (on average 1.205940594059406) internal successors, (609), 513 states have internal predecessors, (609), 63 states have call successors, (63), 55 states have call predecessors, (63), 66 states have return successors, (77), 67 states have call predecessors, (77), 59 states have call successors, (77) [2021-08-30 19:10:41,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 635 states to 635 states and 749 transitions. [2021-08-30 19:10:42,004 INFO L78 Accepts]: Start accepts. Automaton has 635 states and 749 transitions. Word has length 80 [2021-08-30 19:10:42,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 19:10:42,005 INFO L470 AbstractCegarLoop]: Abstraction has 635 states and 749 transitions. [2021-08-30 19:10:42,005 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.333333333333333) internal successors, (64), 5 states have internal predecessors, (64), 5 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) [2021-08-30 19:10:42,005 INFO L276 IsEmpty]: Start isEmpty. Operand 635 states and 749 transitions. [2021-08-30 19:10:42,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-08-30 19:10:42,007 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 19:10:42,007 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 19:10:42,007 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-08-30 19:10:42,007 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-08-30 19:10:42,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 19:10:42,008 INFO L82 PathProgramCache]: Analyzing trace with hash -1814178751, now seen corresponding path program 1 times [2021-08-30 19:10:42,008 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 19:10:42,008 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591156077] [2021-08-30 19:10:42,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:10:42,008 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 19:10:42,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:42,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:10:42,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:42,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-08-30 19:10:42,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:42,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-08-30 19:10:42,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:42,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-08-30 19:10:42,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:42,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-08-30 19:10:42,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:42,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-08-30 19:10:42,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:42,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-08-30 19:10:42,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:42,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-08-30 19:10:42,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:42,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-08-30 19:10:42,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:42,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 19:10:42,294 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 19:10:42,294 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591156077] [2021-08-30 19:10:42,294 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591156077] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 19:10:42,295 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 19:10:42,295 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-30 19:10:42,295 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419307895] [2021-08-30 19:10:42,295 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-30 19:10:42,296 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 19:10:42,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-30 19:10:42,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2021-08-30 19:10:42,296 INFO L87 Difference]: Start difference. First operand 635 states and 749 transitions. Second operand has 16 states, 16 states have (on average 4.125) internal successors, (66), 7 states have internal predecessors, (66), 3 states have call successors, (11), 9 states have call predecessors, (11), 3 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) [2021-08-30 19:10:43,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 19:10:43,833 INFO L93 Difference]: Finished difference Result 682 states and 798 transitions. [2021-08-30 19:10:43,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-30 19:10:43,833 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.125) internal successors, (66), 7 states have internal predecessors, (66), 3 states have call successors, (11), 9 states have call predecessors, (11), 3 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) Word has length 86 [2021-08-30 19:10:43,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 19:10:43,838 INFO L225 Difference]: With dead ends: 682 [2021-08-30 19:10:43,839 INFO L226 Difference]: Without dead ends: 664 [2021-08-30 19:10:43,839 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 304.68ms TimeCoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2021-08-30 19:10:43,839 INFO L928 BasicCegarLoop]: 60 mSDtfsCounter, 233 mSDsluCounter, 1505 mSDsCounter, 0 mSdLazyCounter, 2993 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1143.53ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 493 SdHoareTripleChecker+Invalid, 3068 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.64ms SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 2993 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1356.94ms IncrementalHoareTripleChecker+Time [2021-08-30 19:10:43,839 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [237 Valid, 493 Invalid, 3068 Unknown, 0 Unchecked, 13.64ms Time], IncrementalHoareTripleChecker [75 Valid, 2993 Invalid, 0 Unknown, 0 Unchecked, 1356.94ms Time] [2021-08-30 19:10:43,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 664 states. [2021-08-30 19:10:43,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 664 to 627. [2021-08-30 19:10:43,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 627 states, 498 states have (on average 1.2068273092369477) internal successors, (601), 506 states have internal predecessors, (601), 63 states have call successors, (63), 55 states have call predecessors, (63), 65 states have return successors, (75), 66 states have call predecessors, (75), 59 states have call successors, (75) [2021-08-30 19:10:43,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 627 states to 627 states and 739 transitions. [2021-08-30 19:10:43,862 INFO L78 Accepts]: Start accepts. Automaton has 627 states and 739 transitions. Word has length 86 [2021-08-30 19:10:43,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 19:10:43,862 INFO L470 AbstractCegarLoop]: Abstraction has 627 states and 739 transitions. [2021-08-30 19:10:43,863 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.125) internal successors, (66), 7 states have internal predecessors, (66), 3 states have call successors, (11), 9 states have call predecessors, (11), 3 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) [2021-08-30 19:10:43,863 INFO L276 IsEmpty]: Start isEmpty. Operand 627 states and 739 transitions. [2021-08-30 19:10:43,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-08-30 19:10:43,865 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 19:10:43,865 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 19:10:43,865 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-08-30 19:10:43,865 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-08-30 19:10:43,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 19:10:43,866 INFO L82 PathProgramCache]: Analyzing trace with hash -1760569352, now seen corresponding path program 1 times [2021-08-30 19:10:43,866 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 19:10:43,866 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932888282] [2021-08-30 19:10:43,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:10:43,866 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 19:10:43,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:43,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:10:43,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:43,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-08-30 19:10:43,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:43,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-08-30 19:10:43,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:44,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-08-30 19:10:44,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:44,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-08-30 19:10:44,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:44,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-08-30 19:10:44,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:44,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-08-30 19:10:44,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:44,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 19:10:44,068 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 19:10:44,068 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932888282] [2021-08-30 19:10:44,068 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932888282] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 19:10:44,069 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 19:10:44,069 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-08-30 19:10:44,069 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658173185] [2021-08-30 19:10:44,070 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-08-30 19:10:44,070 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 19:10:44,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-30 19:10:44,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-08-30 19:10:44,072 INFO L87 Difference]: Start difference. First operand 627 states and 739 transitions. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 3 states have internal predecessors, (65), 3 states have call successors, (9), 9 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-08-30 19:10:44,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 19:10:44,819 INFO L93 Difference]: Finished difference Result 634 states and 743 transitions. [2021-08-30 19:10:44,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-08-30 19:10:44,819 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 3 states have internal predecessors, (65), 3 states have call successors, (9), 9 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 81 [2021-08-30 19:10:44,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 19:10:44,821 INFO L225 Difference]: With dead ends: 634 [2021-08-30 19:10:44,821 INFO L226 Difference]: Without dead ends: 581 [2021-08-30 19:10:44,821 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 244.79ms TimeCoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2021-08-30 19:10:44,822 INFO L928 BasicCegarLoop]: 43 mSDtfsCounter, 592 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 1043 mSolverCounterSat, 172 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 511.13ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 605 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 1215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.77ms SdHoareTripleChecker+Time, 172 IncrementalHoareTripleChecker+Valid, 1043 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 604.64ms IncrementalHoareTripleChecker+Time [2021-08-30 19:10:44,822 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [605 Valid, 76 Invalid, 1215 Unknown, 0 Unchecked, 4.77ms Time], IncrementalHoareTripleChecker [172 Valid, 1043 Invalid, 0 Unknown, 0 Unchecked, 604.64ms Time] [2021-08-30 19:10:44,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2021-08-30 19:10:44,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 579. [2021-08-30 19:10:44,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 579 states, 456 states have (on average 1.206140350877193) internal successors, (550), 464 states have internal predecessors, (550), 61 states have call successors, (61), 53 states have call predecessors, (61), 61 states have return successors, (71), 62 states have call predecessors, (71), 57 states have call successors, (71) [2021-08-30 19:10:44,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 579 states to 579 states and 682 transitions. [2021-08-30 19:10:44,832 INFO L78 Accepts]: Start accepts. Automaton has 579 states and 682 transitions. Word has length 81 [2021-08-30 19:10:44,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 19:10:44,832 INFO L470 AbstractCegarLoop]: Abstraction has 579 states and 682 transitions. [2021-08-30 19:10:44,832 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 3 states have internal predecessors, (65), 3 states have call successors, (9), 9 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-08-30 19:10:44,832 INFO L276 IsEmpty]: Start isEmpty. Operand 579 states and 682 transitions. [2021-08-30 19:10:44,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-08-30 19:10:44,834 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 19:10:44,834 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 19:10:44,834 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-08-30 19:10:44,834 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-08-30 19:10:44,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 19:10:44,835 INFO L82 PathProgramCache]: Analyzing trace with hash 1681688182, now seen corresponding path program 1 times [2021-08-30 19:10:44,835 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 19:10:44,835 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489689080] [2021-08-30 19:10:44,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:10:44,835 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 19:10:44,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:44,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:10:44,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:44,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-08-30 19:10:44,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:44,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-08-30 19:10:44,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:45,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-08-30 19:10:45,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:45,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-08-30 19:10:45,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:45,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-08-30 19:10:45,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:45,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-08-30 19:10:45,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:45,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-08-30 19:10:45,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:45,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 19:10:45,103 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 19:10:45,103 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489689080] [2021-08-30 19:10:45,103 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489689080] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 19:10:45,104 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 19:10:45,104 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-30 19:10:45,104 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312213539] [2021-08-30 19:10:45,106 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-30 19:10:45,106 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 19:10:45,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-30 19:10:45,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2021-08-30 19:10:45,107 INFO L87 Difference]: Start difference. First operand 579 states and 682 transitions. Second operand has 16 states, 16 states have (on average 4.5) internal successors, (72), 7 states have internal predecessors, (72), 2 states have call successors, (10), 9 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 1 states have call successors, (8) [2021-08-30 19:10:46,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 19:10:46,321 INFO L93 Difference]: Finished difference Result 580 states and 682 transitions. [2021-08-30 19:10:46,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-08-30 19:10:46,321 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.5) internal successors, (72), 7 states have internal predecessors, (72), 2 states have call successors, (10), 9 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 1 states have call successors, (8) Word has length 90 [2021-08-30 19:10:46,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 19:10:46,323 INFO L225 Difference]: With dead ends: 580 [2021-08-30 19:10:46,323 INFO L226 Difference]: Without dead ends: 495 [2021-08-30 19:10:46,323 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 270.78ms TimeCoverageRelationStatistics Valid=81, Invalid=381, Unknown=0, NotChecked=0, Total=462 [2021-08-30 19:10:46,323 INFO L928 BasicCegarLoop]: 41 mSDtfsCounter, 315 mSDsluCounter, 472 mSDsCounter, 0 mSdLazyCounter, 2715 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 901.24ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 328 SdHoareTripleChecker+Valid, 221 SdHoareTripleChecker+Invalid, 2807 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.98ms SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 2715 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1086.33ms IncrementalHoareTripleChecker+Time [2021-08-30 19:10:46,323 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [328 Valid, 221 Invalid, 2807 Unknown, 0 Unchecked, 10.98ms Time], IncrementalHoareTripleChecker [92 Valid, 2715 Invalid, 0 Unknown, 0 Unchecked, 1086.33ms Time] [2021-08-30 19:10:46,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 495 states. [2021-08-30 19:10:46,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 495 to 493. [2021-08-30 19:10:46,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 493 states, 384 states have (on average 1.2083333333333333) internal successors, (464), 391 states have internal predecessors, (464), 54 states have call successors, (54), 47 states have call predecessors, (54), 54 states have return successors, (64), 55 states have call predecessors, (64), 51 states have call successors, (64) [2021-08-30 19:10:46,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 493 states to 493 states and 582 transitions. [2021-08-30 19:10:46,331 INFO L78 Accepts]: Start accepts. Automaton has 493 states and 582 transitions. Word has length 90 [2021-08-30 19:10:46,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 19:10:46,331 INFO L470 AbstractCegarLoop]: Abstraction has 493 states and 582 transitions. [2021-08-30 19:10:46,331 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.5) internal successors, (72), 7 states have internal predecessors, (72), 2 states have call successors, (10), 9 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 1 states have call successors, (8) [2021-08-30 19:10:46,331 INFO L276 IsEmpty]: Start isEmpty. Operand 493 states and 582 transitions. [2021-08-30 19:10:46,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-08-30 19:10:46,333 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 19:10:46,333 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 19:10:46,333 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-08-30 19:10:46,333 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-08-30 19:10:46,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 19:10:46,334 INFO L82 PathProgramCache]: Analyzing trace with hash 1266916623, now seen corresponding path program 1 times [2021-08-30 19:10:46,334 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 19:10:46,334 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506224095] [2021-08-30 19:10:46,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:10:46,334 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 19:10:46,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:46,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:10:46,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:46,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-08-30 19:10:46,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:46,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-08-30 19:10:46,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:46,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-08-30 19:10:46,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:46,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-08-30 19:10:46,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:46,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-08-30 19:10:46,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:46,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-08-30 19:10:46,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:46,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-08-30 19:10:46,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:46,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-08-30 19:10:46,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:46,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-08-30 19:10:46,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:46,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 19:10:46,591 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 19:10:46,591 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506224095] [2021-08-30 19:10:46,591 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506224095] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 19:10:46,591 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 19:10:46,591 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-08-30 19:10:46,592 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410057859] [2021-08-30 19:10:46,592 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-08-30 19:10:46,592 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 19:10:46,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-08-30 19:10:46,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2021-08-30 19:10:46,593 INFO L87 Difference]: Start difference. First operand 493 states and 582 transitions. Second operand has 14 states, 14 states have (on average 5.285714285714286) internal successors, (74), 5 states have internal predecessors, (74), 2 states have call successors, (12), 10 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2021-08-30 19:10:47,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 19:10:47,219 INFO L93 Difference]: Finished difference Result 491 states and 577 transitions. [2021-08-30 19:10:47,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-08-30 19:10:47,220 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.285714285714286) internal successors, (74), 5 states have internal predecessors, (74), 2 states have call successors, (12), 10 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) Word has length 96 [2021-08-30 19:10:47,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 19:10:47,222 INFO L225 Difference]: With dead ends: 491 [2021-08-30 19:10:47,222 INFO L226 Difference]: Without dead ends: 489 [2021-08-30 19:10:47,223 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 181.42ms TimeCoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2021-08-30 19:10:47,223 INFO L928 BasicCegarLoop]: 45 mSDtfsCounter, 259 mSDsluCounter, 724 mSDsCounter, 0 mSdLazyCounter, 1166 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 480.79ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 259 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 1283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.26ms SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 1166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 582.81ms IncrementalHoareTripleChecker+Time [2021-08-30 19:10:47,224 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [259 Valid, 238 Invalid, 1283 Unknown, 0 Unchecked, 8.26ms Time], IncrementalHoareTripleChecker [117 Valid, 1166 Invalid, 0 Unknown, 0 Unchecked, 582.81ms Time] [2021-08-30 19:10:47,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 489 states. [2021-08-30 19:10:47,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 489 to 436. [2021-08-30 19:10:47,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 436 states, 340 states have (on average 1.1970588235294117) internal successors, (407), 346 states have internal predecessors, (407), 47 states have call successors, (47), 42 states have call predecessors, (47), 48 states have return successors, (55), 48 states have call predecessors, (55), 44 states have call successors, (55) [2021-08-30 19:10:47,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 436 states to 436 states and 509 transitions. [2021-08-30 19:10:47,232 INFO L78 Accepts]: Start accepts. Automaton has 436 states and 509 transitions. Word has length 96 [2021-08-30 19:10:47,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 19:10:47,233 INFO L470 AbstractCegarLoop]: Abstraction has 436 states and 509 transitions. [2021-08-30 19:10:47,233 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.285714285714286) internal successors, (74), 5 states have internal predecessors, (74), 2 states have call successors, (12), 10 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2021-08-30 19:10:47,233 INFO L276 IsEmpty]: Start isEmpty. Operand 436 states and 509 transitions. [2021-08-30 19:10:47,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-08-30 19:10:47,236 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 19:10:47,236 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 19:10:47,238 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-08-30 19:10:47,238 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-08-30 19:10:47,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 19:10:47,239 INFO L82 PathProgramCache]: Analyzing trace with hash -596239754, now seen corresponding path program 1 times [2021-08-30 19:10:47,239 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 19:10:47,239 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693529721] [2021-08-30 19:10:47,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:10:47,239 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 19:10:47,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:47,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:10:47,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:47,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-08-30 19:10:47,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:47,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-08-30 19:10:47,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:47,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-08-30 19:10:47,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:47,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-08-30 19:10:47,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:47,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-08-30 19:10:47,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:47,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-08-30 19:10:47,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:47,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-08-30 19:10:47,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:47,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-08-30 19:10:47,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:47,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-08-30 19:10:47,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:47,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 19:10:47,556 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 19:10:47,556 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693529721] [2021-08-30 19:10:47,556 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693529721] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 19:10:47,556 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 19:10:47,556 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-08-30 19:10:47,556 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139644614] [2021-08-30 19:10:47,557 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-08-30 19:10:47,557 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 19:10:47,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-08-30 19:10:47,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2021-08-30 19:10:47,558 INFO L87 Difference]: Start difference. First operand 436 states and 509 transitions. Second operand has 15 states, 15 states have (on average 4.933333333333334) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (12), 10 states have call predecessors, (12), 2 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2021-08-30 19:10:48,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 19:10:48,956 INFO L93 Difference]: Finished difference Result 833 states and 977 transitions. [2021-08-30 19:10:48,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-08-30 19:10:48,956 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.933333333333334) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (12), 10 states have call predecessors, (12), 2 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) Word has length 96 [2021-08-30 19:10:48,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 19:10:48,958 INFO L225 Difference]: With dead ends: 833 [2021-08-30 19:10:48,959 INFO L226 Difference]: Without dead ends: 791 [2021-08-30 19:10:48,959 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 418.11ms TimeCoverageRelationStatistics Valid=167, Invalid=589, Unknown=0, NotChecked=0, Total=756 [2021-08-30 19:10:48,959 INFO L928 BasicCegarLoop]: 64 mSDtfsCounter, 369 mSDsluCounter, 1603 mSDsCounter, 0 mSdLazyCounter, 3062 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 936.49ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 378 SdHoareTripleChecker+Valid, 372 SdHoareTripleChecker+Invalid, 3191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.22ms SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 3062 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1128.34ms IncrementalHoareTripleChecker+Time [2021-08-30 19:10:48,959 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [378 Valid, 372 Invalid, 3191 Unknown, 0 Unchecked, 10.22ms Time], IncrementalHoareTripleChecker [129 Valid, 3062 Invalid, 0 Unknown, 0 Unchecked, 1128.34ms Time] [2021-08-30 19:10:48,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 791 states. [2021-08-30 19:10:48,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 791 to 416. [2021-08-30 19:10:48,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 416 states, 324 states have (on average 1.1975308641975309) internal successors, (388), 329 states have internal predecessors, (388), 44 states have call successors, (44), 41 states have call predecessors, (44), 47 states have return successors, (52), 45 states have call predecessors, (52), 41 states have call successors, (52) [2021-08-30 19:10:48,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 484 transitions. [2021-08-30 19:10:48,967 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 484 transitions. Word has length 96 [2021-08-30 19:10:48,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 19:10:48,967 INFO L470 AbstractCegarLoop]: Abstraction has 416 states and 484 transitions. [2021-08-30 19:10:48,968 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.933333333333334) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (12), 10 states have call predecessors, (12), 2 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2021-08-30 19:10:48,968 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 484 transitions. [2021-08-30 19:10:48,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-08-30 19:10:48,969 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 19:10:48,969 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 19:10:48,969 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-08-30 19:10:48,969 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-08-30 19:10:48,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 19:10:48,970 INFO L82 PathProgramCache]: Analyzing trace with hash -693188859, now seen corresponding path program 1 times [2021-08-30 19:10:48,970 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 19:10:48,970 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979323773] [2021-08-30 19:10:48,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:10:48,970 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 19:10:48,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:49,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:10:49,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:49,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-08-30 19:10:49,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:49,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-08-30 19:10:49,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:49,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-08-30 19:10:49,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:49,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-08-30 19:10:49,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:49,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-08-30 19:10:49,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:49,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-08-30 19:10:49,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:49,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-08-30 19:10:49,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:49,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-08-30 19:10:49,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:49,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-08-30 19:10:49,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:49,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-08-30 19:10:49,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:49,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-08-30 19:10:49,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:49,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 19:10:49,320 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 19:10:49,320 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979323773] [2021-08-30 19:10:49,320 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979323773] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 19:10:49,321 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 19:10:49,321 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-08-30 19:10:49,321 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739231626] [2021-08-30 19:10:49,322 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-08-30 19:10:49,322 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 19:10:49,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-08-30 19:10:49,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=269, Unknown=0, NotChecked=0, Total=342 [2021-08-30 19:10:49,324 INFO L87 Difference]: Start difference. First operand 416 states and 484 transitions. Second operand has 19 states, 19 states have (on average 3.9473684210526314) internal successors, (75), 7 states have internal predecessors, (75), 3 states have call successors, (14), 12 states have call predecessors, (14), 3 states have return successors, (12), 4 states have call predecessors, (12), 2 states have call successors, (12) [2021-08-30 19:10:50,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 19:10:50,200 INFO L93 Difference]: Finished difference Result 461 states and 538 transitions. [2021-08-30 19:10:50,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-30 19:10:50,201 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.9473684210526314) internal successors, (75), 7 states have internal predecessors, (75), 3 states have call successors, (14), 12 states have call predecessors, (14), 3 states have return successors, (12), 4 states have call predecessors, (12), 2 states have call successors, (12) Word has length 101 [2021-08-30 19:10:50,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 19:10:50,206 INFO L225 Difference]: With dead ends: 461 [2021-08-30 19:10:50,206 INFO L226 Difference]: Without dead ends: 435 [2021-08-30 19:10:50,207 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 287.13ms TimeCoverageRelationStatistics Valid=114, Invalid=438, Unknown=0, NotChecked=0, Total=552 [2021-08-30 19:10:50,209 INFO L928 BasicCegarLoop]: 39 mSDtfsCounter, 247 mSDsluCounter, 1030 mSDsCounter, 0 mSdLazyCounter, 1842 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 638.30ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 330 SdHoareTripleChecker+Invalid, 1955 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.95ms SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 1842 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 771.90ms IncrementalHoareTripleChecker+Time [2021-08-30 19:10:50,210 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [248 Valid, 330 Invalid, 1955 Unknown, 0 Unchecked, 7.95ms Time], IncrementalHoareTripleChecker [113 Valid, 1842 Invalid, 0 Unknown, 0 Unchecked, 771.90ms Time] [2021-08-30 19:10:50,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435 states. [2021-08-30 19:10:50,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435 to 425. [2021-08-30 19:10:50,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 425 states, 332 states have (on average 1.1837349397590362) internal successors, (393), 338 states have internal predecessors, (393), 45 states have call successors, (45), 41 states have call predecessors, (45), 47 states have return successors, (52), 45 states have call predecessors, (52), 41 states have call successors, (52) [2021-08-30 19:10:50,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 490 transitions. [2021-08-30 19:10:50,217 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 490 transitions. Word has length 101 [2021-08-30 19:10:50,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 19:10:50,218 INFO L470 AbstractCegarLoop]: Abstraction has 425 states and 490 transitions. [2021-08-30 19:10:50,218 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.9473684210526314) internal successors, (75), 7 states have internal predecessors, (75), 3 states have call successors, (14), 12 states have call predecessors, (14), 3 states have return successors, (12), 4 states have call predecessors, (12), 2 states have call successors, (12) [2021-08-30 19:10:50,218 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 490 transitions. [2021-08-30 19:10:50,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-08-30 19:10:50,219 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 19:10:50,219 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 19:10:50,220 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-08-30 19:10:50,220 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-08-30 19:10:50,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 19:10:50,221 INFO L82 PathProgramCache]: Analyzing trace with hash 1496072861, now seen corresponding path program 1 times [2021-08-30 19:10:50,221 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 19:10:50,221 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671040558] [2021-08-30 19:10:50,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:10:50,222 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 19:10:50,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:50,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:10:50,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:50,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-08-30 19:10:50,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:50,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-08-30 19:10:50,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:50,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-08-30 19:10:50,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:50,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-08-30 19:10:50,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:50,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-08-30 19:10:50,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:50,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-08-30 19:10:50,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:50,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-08-30 19:10:50,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:50,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-08-30 19:10:50,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:50,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-08-30 19:10:50,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:50,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-08-30 19:10:50,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:50,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-08-30 19:10:50,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:50,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-08-30 19:10:50,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:50,492 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-08-30 19:10:50,493 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 19:10:50,493 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671040558] [2021-08-30 19:10:50,493 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671040558] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 19:10:50,493 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 19:10:50,493 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-08-30 19:10:50,493 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065412633] [2021-08-30 19:10:50,494 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-08-30 19:10:50,494 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 19:10:50,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-08-30 19:10:50,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2021-08-30 19:10:50,495 INFO L87 Difference]: Start difference. First operand 425 states and 490 transitions. Second operand has 14 states, 14 states have (on average 4.785714285714286) internal successors, (67), 5 states have internal predecessors, (67), 2 states have call successors, (15), 10 states have call predecessors, (15), 3 states have return successors, (10), 3 states have call predecessors, (10), 1 states have call successors, (10) [2021-08-30 19:10:51,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 19:10:51,269 INFO L93 Difference]: Finished difference Result 376 states and 423 transitions. [2021-08-30 19:10:51,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-08-30 19:10:51,269 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.785714285714286) internal successors, (67), 5 states have internal predecessors, (67), 2 states have call successors, (15), 10 states have call predecessors, (15), 3 states have return successors, (10), 3 states have call predecessors, (10), 1 states have call successors, (10) Word has length 110 [2021-08-30 19:10:51,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 19:10:51,270 INFO L225 Difference]: With dead ends: 376 [2021-08-30 19:10:51,270 INFO L226 Difference]: Without dead ends: 376 [2021-08-30 19:10:51,271 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 190.09ms TimeCoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2021-08-30 19:10:51,271 INFO L928 BasicCegarLoop]: 37 mSDtfsCounter, 148 mSDsluCounter, 733 mSDsCounter, 0 mSdLazyCounter, 1451 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 588.09ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 1513 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.56ms SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 1451 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 705.77ms IncrementalHoareTripleChecker+Time [2021-08-30 19:10:51,271 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [150 Valid, 208 Invalid, 1513 Unknown, 0 Unchecked, 7.56ms Time], IncrementalHoareTripleChecker [62 Valid, 1451 Invalid, 0 Unknown, 0 Unchecked, 705.77ms Time] [2021-08-30 19:10:51,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2021-08-30 19:10:51,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 242. [2021-08-30 19:10:51,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 189 states have (on average 1.1428571428571428) internal successors, (216), 191 states have internal predecessors, (216), 26 states have call successors, (26), 26 states have call predecessors, (26), 26 states have return successors, (26), 24 states have call predecessors, (26), 24 states have call successors, (26) [2021-08-30 19:10:51,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 268 transitions. [2021-08-30 19:10:51,276 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 268 transitions. Word has length 110 [2021-08-30 19:10:51,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 19:10:51,276 INFO L470 AbstractCegarLoop]: Abstraction has 242 states and 268 transitions. [2021-08-30 19:10:51,276 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.785714285714286) internal successors, (67), 5 states have internal predecessors, (67), 2 states have call successors, (15), 10 states have call predecessors, (15), 3 states have return successors, (10), 3 states have call predecessors, (10), 1 states have call successors, (10) [2021-08-30 19:10:51,276 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 268 transitions. [2021-08-30 19:10:51,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-08-30 19:10:51,277 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 19:10:51,277 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 19:10:51,277 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-08-30 19:10:51,277 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-08-30 19:10:51,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 19:10:51,277 INFO L82 PathProgramCache]: Analyzing trace with hash -1225581856, now seen corresponding path program 1 times [2021-08-30 19:10:51,278 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 19:10:51,278 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503492678] [2021-08-30 19:10:51,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:10:51,278 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 19:10:51,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:51,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:10:51,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:51,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-08-30 19:10:51,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:51,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-08-30 19:10:51,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:51,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-08-30 19:10:51,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:51,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-08-30 19:10:51,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:51,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-08-30 19:10:51,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:51,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-08-30 19:10:51,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:51,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-08-30 19:10:51,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:51,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-08-30 19:10:51,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:51,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-08-30 19:10:51,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:51,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-08-30 19:10:51,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:51,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-08-30 19:10:51,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:51,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-08-30 19:10:51,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:51,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 19:10:51,638 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 19:10:51,639 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503492678] [2021-08-30 19:10:51,640 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503492678] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 19:10:51,640 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 19:10:51,640 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-08-30 19:10:51,640 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061325265] [2021-08-30 19:10:51,641 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-08-30 19:10:51,641 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 19:10:51,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-08-30 19:10:51,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2021-08-30 19:10:51,642 INFO L87 Difference]: Start difference. First operand 242 states and 268 transitions. Second operand has 15 states, 15 states have (on average 5.933333333333334) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (15), 12 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) [2021-08-30 19:10:52,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 19:10:52,465 INFO L93 Difference]: Finished difference Result 256 states and 284 transitions. [2021-08-30 19:10:52,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-30 19:10:52,465 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.933333333333334) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (15), 12 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) Word has length 117 [2021-08-30 19:10:52,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 19:10:52,466 INFO L225 Difference]: With dead ends: 256 [2021-08-30 19:10:52,466 INFO L226 Difference]: Without dead ends: 256 [2021-08-30 19:10:52,467 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 315.77ms TimeCoverageRelationStatistics Valid=114, Invalid=228, Unknown=0, NotChecked=0, Total=342 [2021-08-30 19:10:52,467 INFO L928 BasicCegarLoop]: 36 mSDtfsCounter, 172 mSDsluCounter, 608 mSDsCounter, 0 mSdLazyCounter, 1360 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 567.06ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 1428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.83ms SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 1360 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 674.88ms IncrementalHoareTripleChecker+Time [2021-08-30 19:10:52,467 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [173 Valid, 170 Invalid, 1428 Unknown, 0 Unchecked, 6.83ms Time], IncrementalHoareTripleChecker [68 Valid, 1360 Invalid, 0 Unknown, 0 Unchecked, 674.88ms Time] [2021-08-30 19:10:52,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2021-08-30 19:10:52,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 246. [2021-08-30 19:10:52,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 192 states have (on average 1.140625) internal successors, (219), 194 states have internal predecessors, (219), 26 states have call successors, (26), 26 states have call predecessors, (26), 27 states have return successors, (27), 25 states have call predecessors, (27), 24 states have call successors, (27) [2021-08-30 19:10:52,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 272 transitions. [2021-08-30 19:10:52,472 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 272 transitions. Word has length 117 [2021-08-30 19:10:52,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 19:10:52,474 INFO L470 AbstractCegarLoop]: Abstraction has 246 states and 272 transitions. [2021-08-30 19:10:52,474 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.933333333333334) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (15), 12 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) [2021-08-30 19:10:52,475 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 272 transitions. [2021-08-30 19:10:52,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-08-30 19:10:52,476 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 19:10:52,476 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 19:10:52,476 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-08-30 19:10:52,476 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-08-30 19:10:52,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 19:10:52,477 INFO L82 PathProgramCache]: Analyzing trace with hash -1044095359, now seen corresponding path program 1 times [2021-08-30 19:10:52,477 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 19:10:52,477 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947246868] [2021-08-30 19:10:52,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:10:52,477 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 19:10:52,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:52,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:10:52,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:52,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-08-30 19:10:52,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:52,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-08-30 19:10:52,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:52,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-08-30 19:10:52,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:52,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-08-30 19:10:52,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:52,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-08-30 19:10:52,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:52,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-08-30 19:10:52,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:52,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-08-30 19:10:52,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:52,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-08-30 19:10:52,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:52,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-08-30 19:10:52,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:52,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-08-30 19:10:52,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:52,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-08-30 19:10:52,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:52,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-08-30 19:10:52,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:52,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 19:10:52,792 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 19:10:52,793 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947246868] [2021-08-30 19:10:52,793 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947246868] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 19:10:52,793 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 19:10:52,793 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-08-30 19:10:52,793 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403506632] [2021-08-30 19:10:52,793 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-08-30 19:10:52,794 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 19:10:52,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-08-30 19:10:52,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2021-08-30 19:10:52,794 INFO L87 Difference]: Start difference. First operand 246 states and 272 transitions. Second operand has 15 states, 15 states have (on average 5.933333333333334) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (15), 12 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) [2021-08-30 19:10:53,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 19:10:53,384 INFO L93 Difference]: Finished difference Result 256 states and 282 transitions. [2021-08-30 19:10:53,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-30 19:10:53,385 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.933333333333334) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (15), 12 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) Word has length 117 [2021-08-30 19:10:53,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 19:10:53,386 INFO L225 Difference]: With dead ends: 256 [2021-08-30 19:10:53,386 INFO L226 Difference]: Without dead ends: 252 [2021-08-30 19:10:53,386 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 236.78ms TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2021-08-30 19:10:53,386 INFO L928 BasicCegarLoop]: 35 mSDtfsCounter, 175 mSDsluCounter, 584 mSDsCounter, 0 mSdLazyCounter, 1227 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 435.76ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 1294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.91ms SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 1227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 523.06ms IncrementalHoareTripleChecker+Time [2021-08-30 19:10:53,387 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [175 Valid, 163 Invalid, 1294 Unknown, 0 Unchecked, 4.91ms Time], IncrementalHoareTripleChecker [67 Valid, 1227 Invalid, 0 Unknown, 0 Unchecked, 523.06ms Time] [2021-08-30 19:10:53,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2021-08-30 19:10:53,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 246. [2021-08-30 19:10:53,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 192 states have (on average 1.1354166666666667) internal successors, (218), 194 states have internal predecessors, (218), 26 states have call successors, (26), 26 states have call predecessors, (26), 27 states have return successors, (27), 25 states have call predecessors, (27), 24 states have call successors, (27) [2021-08-30 19:10:53,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 271 transitions. [2021-08-30 19:10:53,390 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 271 transitions. Word has length 117 [2021-08-30 19:10:53,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 19:10:53,390 INFO L470 AbstractCegarLoop]: Abstraction has 246 states and 271 transitions. [2021-08-30 19:10:53,390 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.933333333333334) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (15), 12 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) [2021-08-30 19:10:53,391 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 271 transitions. [2021-08-30 19:10:53,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-08-30 19:10:53,391 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 19:10:53,392 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 19:10:53,392 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-08-30 19:10:53,392 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-08-30 19:10:53,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 19:10:53,392 INFO L82 PathProgramCache]: Analyzing trace with hash 1109919017, now seen corresponding path program 1 times [2021-08-30 19:10:53,393 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 19:10:53,393 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521936679] [2021-08-30 19:10:53,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:10:53,393 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 19:10:53,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:53,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:10:53,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:53,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-08-30 19:10:53,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:53,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-08-30 19:10:53,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:53,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-08-30 19:10:53,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:53,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-08-30 19:10:53,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:53,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-08-30 19:10:53,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:53,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-08-30 19:10:53,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:53,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-08-30 19:10:53,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:53,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-08-30 19:10:53,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:53,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-08-30 19:10:53,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:53,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-08-30 19:10:53,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:53,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-08-30 19:10:53,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:53,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-08-30 19:10:53,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:53,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-08-30 19:10:53,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:53,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-08-30 19:10:53,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:53,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-08-30 19:10:53,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:53,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-08-30 19:10:53,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:53,908 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-08-30 19:10:53,908 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 19:10:53,909 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521936679] [2021-08-30 19:10:53,909 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521936679] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 19:10:53,909 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 19:10:53,909 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-08-30 19:10:53,909 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709494400] [2021-08-30 19:10:53,910 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-08-30 19:10:53,910 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 19:10:53,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-08-30 19:10:53,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=515, Unknown=0, NotChecked=0, Total=600 [2021-08-30 19:10:53,911 INFO L87 Difference]: Start difference. First operand 246 states and 271 transitions. Second operand has 25 states, 25 states have (on average 3.92) internal successors, (98), 11 states have internal predecessors, (98), 3 states have call successors, (16), 12 states have call predecessors, (16), 5 states have return successors, (14), 6 states have call predecessors, (14), 2 states have call successors, (14) [2021-08-30 19:10:55,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 19:10:55,135 INFO L93 Difference]: Finished difference Result 315 states and 356 transitions. [2021-08-30 19:10:55,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-08-30 19:10:55,136 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.92) internal successors, (98), 11 states have internal predecessors, (98), 3 states have call successors, (16), 12 states have call predecessors, (16), 5 states have return successors, (14), 6 states have call predecessors, (14), 2 states have call successors, (14) Word has length 147 [2021-08-30 19:10:55,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 19:10:55,136 INFO L225 Difference]: With dead ends: 315 [2021-08-30 19:10:55,136 INFO L226 Difference]: Without dead ends: 283 [2021-08-30 19:10:55,137 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 446.28ms TimeCoverageRelationStatistics Valid=148, Invalid=1042, Unknown=0, NotChecked=0, Total=1190 [2021-08-30 19:10:55,138 INFO L928 BasicCegarLoop]: 43 mSDtfsCounter, 265 mSDsluCounter, 1492 mSDsCounter, 0 mSdLazyCounter, 2668 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 859.91ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 273 SdHoareTripleChecker+Valid, 617 SdHoareTripleChecker+Invalid, 2802 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.49ms SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 2668 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1040.03ms IncrementalHoareTripleChecker+Time [2021-08-30 19:10:55,138 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [273 Valid, 617 Invalid, 2802 Unknown, 0 Unchecked, 12.49ms Time], IncrementalHoareTripleChecker [134 Valid, 2668 Invalid, 0 Unknown, 0 Unchecked, 1040.03ms Time] [2021-08-30 19:10:55,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2021-08-30 19:10:55,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 263. [2021-08-30 19:10:55,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 207 states have (on average 1.144927536231884) internal successors, (237), 209 states have internal predecessors, (237), 26 states have call successors, (26), 26 states have call predecessors, (26), 29 states have return successors, (29), 27 states have call predecessors, (29), 24 states have call successors, (29) [2021-08-30 19:10:55,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 292 transitions. [2021-08-30 19:10:55,142 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 292 transitions. Word has length 147 [2021-08-30 19:10:55,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 19:10:55,143 INFO L470 AbstractCegarLoop]: Abstraction has 263 states and 292 transitions. [2021-08-30 19:10:55,143 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.92) internal successors, (98), 11 states have internal predecessors, (98), 3 states have call successors, (16), 12 states have call predecessors, (16), 5 states have return successors, (14), 6 states have call predecessors, (14), 2 states have call successors, (14) [2021-08-30 19:10:55,143 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 292 transitions. [2021-08-30 19:10:55,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-08-30 19:10:55,144 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 19:10:55,144 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 19:10:55,144 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-08-30 19:10:55,144 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-08-30 19:10:55,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 19:10:55,145 INFO L82 PathProgramCache]: Analyzing trace with hash 2025391703, now seen corresponding path program 1 times [2021-08-30 19:10:55,145 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 19:10:55,145 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730894069] [2021-08-30 19:10:55,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:10:55,146 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 19:10:55,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:55,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:10:55,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:55,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-08-30 19:10:55,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:55,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-08-30 19:10:55,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:55,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-08-30 19:10:55,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:55,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-08-30 19:10:55,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:55,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-08-30 19:10:55,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:55,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-08-30 19:10:55,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:55,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-08-30 19:10:55,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:55,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-08-30 19:10:55,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:55,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-08-30 19:10:55,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:55,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-08-30 19:10:55,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:55,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-08-30 19:10:55,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:55,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-08-30 19:10:55,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:55,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-08-30 19:10:55,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:55,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-08-30 19:10:55,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:55,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-08-30 19:10:55,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:55,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-08-30 19:10:55,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:55,590 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-08-30 19:10:55,590 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 19:10:55,590 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730894069] [2021-08-30 19:10:55,590 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730894069] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 19:10:55,590 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 19:10:55,590 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2021-08-30 19:10:55,591 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437867214] [2021-08-30 19:10:55,591 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-08-30 19:10:55,591 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 19:10:55,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-08-30 19:10:55,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=469, Unknown=0, NotChecked=0, Total=552 [2021-08-30 19:10:55,592 INFO L87 Difference]: Start difference. First operand 263 states and 292 transitions. Second operand has 24 states, 24 states have (on average 4.166666666666667) internal successors, (100), 10 states have internal predecessors, (100), 2 states have call successors, (16), 12 states have call predecessors, (16), 5 states have return successors, (14), 6 states have call predecessors, (14), 2 states have call successors, (14) [2021-08-30 19:10:56,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 19:10:56,705 INFO L93 Difference]: Finished difference Result 282 states and 313 transitions. [2021-08-30 19:10:56,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-08-30 19:10:56,705 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 4.166666666666667) internal successors, (100), 10 states have internal predecessors, (100), 2 states have call successors, (16), 12 states have call predecessors, (16), 5 states have return successors, (14), 6 states have call predecessors, (14), 2 states have call successors, (14) Word has length 148 [2021-08-30 19:10:56,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 19:10:56,707 INFO L225 Difference]: With dead ends: 282 [2021-08-30 19:10:56,707 INFO L226 Difference]: Without dead ends: 277 [2021-08-30 19:10:56,707 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 374.70ms TimeCoverageRelationStatistics Valid=130, Invalid=740, Unknown=0, NotChecked=0, Total=870 [2021-08-30 19:10:56,708 INFO L928 BasicCegarLoop]: 40 mSDtfsCounter, 180 mSDsluCounter, 1600 mSDsCounter, 0 mSdLazyCounter, 2834 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 813.68ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 542 SdHoareTripleChecker+Invalid, 2901 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.36ms SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 2834 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 983.24ms IncrementalHoareTripleChecker+Time [2021-08-30 19:10:56,708 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [184 Valid, 542 Invalid, 2901 Unknown, 0 Unchecked, 10.36ms Time], IncrementalHoareTripleChecker [67 Valid, 2834 Invalid, 0 Unknown, 0 Unchecked, 983.24ms Time] [2021-08-30 19:10:56,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2021-08-30 19:10:56,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 263. [2021-08-30 19:10:56,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 207 states have (on average 1.1400966183574879) internal successors, (236), 209 states have internal predecessors, (236), 26 states have call successors, (26), 26 states have call predecessors, (26), 29 states have return successors, (29), 27 states have call predecessors, (29), 24 states have call successors, (29) [2021-08-30 19:10:56,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 291 transitions. [2021-08-30 19:10:56,712 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 291 transitions. Word has length 148 [2021-08-30 19:10:56,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 19:10:56,713 INFO L470 AbstractCegarLoop]: Abstraction has 263 states and 291 transitions. [2021-08-30 19:10:56,713 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 4.166666666666667) internal successors, (100), 10 states have internal predecessors, (100), 2 states have call successors, (16), 12 states have call predecessors, (16), 5 states have return successors, (14), 6 states have call predecessors, (14), 2 states have call successors, (14) [2021-08-30 19:10:56,713 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 291 transitions. [2021-08-30 19:10:56,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-08-30 19:10:56,714 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 19:10:56,714 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 19:10:56,714 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-08-30 19:10:56,715 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-08-30 19:10:56,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 19:10:56,715 INFO L82 PathProgramCache]: Analyzing trace with hash 1867828009, now seen corresponding path program 1 times [2021-08-30 19:10:56,715 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 19:10:56,715 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335344181] [2021-08-30 19:10:56,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:10:56,716 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 19:10:56,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:56,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:10:56,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:56,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-08-30 19:10:56,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:56,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-08-30 19:10:56,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:56,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-08-30 19:10:56,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:56,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-08-30 19:10:56,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:57,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-08-30 19:10:57,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:57,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-08-30 19:10:57,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:57,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-08-30 19:10:57,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:57,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-08-30 19:10:57,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:57,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-08-30 19:10:57,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:57,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-08-30 19:10:57,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:57,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-08-30 19:10:57,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:57,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-08-30 19:10:57,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:57,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-08-30 19:10:57,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:57,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-08-30 19:10:57,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:57,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-08-30 19:10:57,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:57,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-08-30 19:10:57,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:57,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-08-30 19:10:57,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:57,128 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-08-30 19:10:57,129 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 19:10:57,129 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335344181] [2021-08-30 19:10:57,129 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335344181] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 19:10:57,129 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 19:10:57,129 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2021-08-30 19:10:57,129 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097761562] [2021-08-30 19:10:57,130 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-08-30 19:10:57,130 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 19:10:57,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-08-30 19:10:57,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2021-08-30 19:10:57,131 INFO L87 Difference]: Start difference. First operand 263 states and 291 transitions. Second operand has 21 states, 21 states have (on average 4.428571428571429) internal successors, (93), 8 states have internal predecessors, (93), 3 states have call successors, (17), 12 states have call predecessors, (17), 4 states have return successors, (15), 5 states have call predecessors, (15), 2 states have call successors, (15) [2021-08-30 19:10:58,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 19:10:58,107 INFO L93 Difference]: Finished difference Result 301 states and 336 transitions. [2021-08-30 19:10:58,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-08-30 19:10:58,108 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 4.428571428571429) internal successors, (93), 8 states have internal predecessors, (93), 3 states have call successors, (17), 12 states have call predecessors, (17), 4 states have return successors, (15), 5 states have call predecessors, (15), 2 states have call successors, (15) Word has length 150 [2021-08-30 19:10:58,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 19:10:58,109 INFO L225 Difference]: With dead ends: 301 [2021-08-30 19:10:58,109 INFO L226 Difference]: Without dead ends: 263 [2021-08-30 19:10:58,109 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 396.91ms TimeCoverageRelationStatistics Valid=141, Invalid=671, Unknown=0, NotChecked=0, Total=812 [2021-08-30 19:10:58,110 INFO L928 BasicCegarLoop]: 38 mSDtfsCounter, 207 mSDsluCounter, 1154 mSDsCounter, 0 mSdLazyCounter, 2137 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 652.57ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 399 SdHoareTripleChecker+Invalid, 2232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.14ms SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 2137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 789.60ms IncrementalHoareTripleChecker+Time [2021-08-30 19:10:58,110 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [212 Valid, 399 Invalid, 2232 Unknown, 0 Unchecked, 8.14ms Time], IncrementalHoareTripleChecker [95 Valid, 2137 Invalid, 0 Unknown, 0 Unchecked, 789.60ms Time] [2021-08-30 19:10:58,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2021-08-30 19:10:58,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 257. [2021-08-30 19:10:58,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 203 states have (on average 1.1280788177339902) internal successors, (229), 205 states have internal predecessors, (229), 25 states have call successors, (25), 25 states have call predecessors, (25), 28 states have return successors, (28), 26 states have call predecessors, (28), 23 states have call successors, (28) [2021-08-30 19:10:58,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 282 transitions. [2021-08-30 19:10:58,114 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 282 transitions. Word has length 150 [2021-08-30 19:10:58,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 19:10:58,115 INFO L470 AbstractCegarLoop]: Abstraction has 257 states and 282 transitions. [2021-08-30 19:10:58,115 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 4.428571428571429) internal successors, (93), 8 states have internal predecessors, (93), 3 states have call successors, (17), 12 states have call predecessors, (17), 4 states have return successors, (15), 5 states have call predecessors, (15), 2 states have call successors, (15) [2021-08-30 19:10:58,115 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 282 transitions. [2021-08-30 19:10:58,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-08-30 19:10:58,116 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 19:10:58,116 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 19:10:58,116 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-08-30 19:10:58,117 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-08-30 19:10:58,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 19:10:58,117 INFO L82 PathProgramCache]: Analyzing trace with hash -495529015, now seen corresponding path program 1 times [2021-08-30 19:10:58,117 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 19:10:58,117 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991517893] [2021-08-30 19:10:58,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:10:58,117 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 19:10:58,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:58,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:10:58,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:58,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-08-30 19:10:58,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:58,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-08-30 19:10:58,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:58,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-08-30 19:10:58,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:58,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-08-30 19:10:58,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:58,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-08-30 19:10:58,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:58,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-08-30 19:10:58,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:58,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-08-30 19:10:58,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:58,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-08-30 19:10:58,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:58,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-08-30 19:10:58,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:58,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-08-30 19:10:58,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:58,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-08-30 19:10:58,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:58,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-08-30 19:10:58,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:58,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-08-30 19:10:58,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:58,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-08-30 19:10:58,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:58,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-08-30 19:10:58,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:58,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-08-30 19:10:58,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:58,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-08-30 19:10:58,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:58,455 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-08-30 19:10:58,455 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 19:10:58,455 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991517893] [2021-08-30 19:10:58,456 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991517893] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 19:10:58,456 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 19:10:58,456 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-08-30 19:10:58,456 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718753365] [2021-08-30 19:10:58,456 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-08-30 19:10:58,457 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 19:10:58,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-08-30 19:10:58,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2021-08-30 19:10:58,457 INFO L87 Difference]: Start difference. First operand 257 states and 282 transitions. Second operand has 15 states, 15 states have (on average 6.533333333333333) internal successors, (98), 5 states have internal predecessors, (98), 4 states have call successors, (17), 12 states have call predecessors, (17), 2 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) [2021-08-30 19:10:59,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 19:10:59,190 INFO L93 Difference]: Finished difference Result 254 states and 276 transitions. [2021-08-30 19:10:59,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-30 19:10:59,191 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 6.533333333333333) internal successors, (98), 5 states have internal predecessors, (98), 4 states have call successors, (17), 12 states have call predecessors, (17), 2 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) Word has length 155 [2021-08-30 19:10:59,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 19:10:59,192 INFO L225 Difference]: With dead ends: 254 [2021-08-30 19:10:59,192 INFO L226 Difference]: Without dead ends: 243 [2021-08-30 19:10:59,193 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 335.98ms TimeCoverageRelationStatistics Valid=147, Invalid=405, Unknown=0, NotChecked=0, Total=552 [2021-08-30 19:10:59,194 INFO L928 BasicCegarLoop]: 24 mSDtfsCounter, 314 mSDsluCounter, 439 mSDsCounter, 0 mSdLazyCounter, 1120 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 454.74ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 316 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 1231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.07ms SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 1120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 544.99ms IncrementalHoareTripleChecker+Time [2021-08-30 19:10:59,194 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [316 Valid, 76 Invalid, 1231 Unknown, 0 Unchecked, 5.07ms Time], IncrementalHoareTripleChecker [111 Valid, 1120 Invalid, 0 Unknown, 0 Unchecked, 544.99ms Time] [2021-08-30 19:10:59,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2021-08-30 19:10:59,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 229. [2021-08-30 19:10:59,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 179 states have (on average 1.111731843575419) internal successors, (199), 181 states have internal predecessors, (199), 24 states have call successors, (24), 24 states have call predecessors, (24), 25 states have return successors, (25), 23 states have call predecessors, (25), 22 states have call successors, (25) [2021-08-30 19:10:59,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 248 transitions. [2021-08-30 19:10:59,198 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 248 transitions. Word has length 155 [2021-08-30 19:10:59,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 19:10:59,198 INFO L470 AbstractCegarLoop]: Abstraction has 229 states and 248 transitions. [2021-08-30 19:10:59,198 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.533333333333333) internal successors, (98), 5 states have internal predecessors, (98), 4 states have call successors, (17), 12 states have call predecessors, (17), 2 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) [2021-08-30 19:10:59,198 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 248 transitions. [2021-08-30 19:10:59,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-08-30 19:10:59,199 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 19:10:59,199 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 19:10:59,200 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-08-30 19:10:59,200 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-08-30 19:10:59,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 19:10:59,200 INFO L82 PathProgramCache]: Analyzing trace with hash -1029557280, now seen corresponding path program 1 times [2021-08-30 19:10:59,200 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 19:10:59,201 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091010562] [2021-08-30 19:10:59,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:10:59,201 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 19:10:59,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:59,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:10:59,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:59,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-08-30 19:10:59,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:59,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-08-30 19:10:59,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:59,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-08-30 19:10:59,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:59,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-08-30 19:10:59,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:59,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-08-30 19:10:59,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:59,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-08-30 19:10:59,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:59,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-08-30 19:10:59,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:59,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-08-30 19:10:59,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:59,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-08-30 19:10:59,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:59,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-08-30 19:10:59,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:59,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-08-30 19:10:59,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:59,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-08-30 19:10:59,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:59,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-08-30 19:10:59,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:59,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-08-30 19:10:59,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:59,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-08-30 19:10:59,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:59,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-08-30 19:10:59,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:59,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-08-30 19:10:59,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:10:59,562 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-08-30 19:10:59,563 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 19:10:59,563 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091010562] [2021-08-30 19:10:59,563 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091010562] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 19:10:59,563 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 19:10:59,563 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-30 19:10:59,563 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413386453] [2021-08-30 19:10:59,564 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-30 19:10:59,564 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 19:10:59,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-30 19:10:59,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2021-08-30 19:10:59,565 INFO L87 Difference]: Start difference. First operand 229 states and 248 transitions. Second operand has 17 states, 17 states have (on average 6.235294117647059) internal successors, (106), 5 states have internal predecessors, (106), 2 states have call successors, (17), 13 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2021-08-30 19:11:00,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 19:11:00,209 INFO L93 Difference]: Finished difference Result 218 states and 234 transitions. [2021-08-30 19:11:00,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-30 19:11:00,209 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 6.235294117647059) internal successors, (106), 5 states have internal predecessors, (106), 2 states have call successors, (17), 13 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) Word has length 157 [2021-08-30 19:11:00,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 19:11:00,210 INFO L225 Difference]: With dead ends: 218 [2021-08-30 19:11:00,210 INFO L226 Difference]: Without dead ends: 208 [2021-08-30 19:11:00,210 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 250.08ms TimeCoverageRelationStatistics Valid=124, Invalid=338, Unknown=0, NotChecked=0, Total=462 [2021-08-30 19:11:00,211 INFO L928 BasicCegarLoop]: 30 mSDtfsCounter, 134 mSDsluCounter, 540 mSDsCounter, 0 mSdLazyCounter, 1136 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 471.10ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 1186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.89ms SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 1136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 557.66ms IncrementalHoareTripleChecker+Time [2021-08-30 19:11:00,211 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [134 Valid, 171 Invalid, 1186 Unknown, 0 Unchecked, 5.89ms Time], IncrementalHoareTripleChecker [50 Valid, 1136 Invalid, 0 Unknown, 0 Unchecked, 557.66ms Time] [2021-08-30 19:11:00,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2021-08-30 19:11:00,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 208. [2021-08-30 19:11:00,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 161 states have (on average 1.0993788819875776) internal successors, (177), 162 states have internal predecessors, (177), 23 states have call successors, (23), 23 states have call predecessors, (23), 23 states have return successors, (23), 22 states have call predecessors, (23), 21 states have call successors, (23) [2021-08-30 19:11:00,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 223 transitions. [2021-08-30 19:11:00,214 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 223 transitions. Word has length 157 [2021-08-30 19:11:00,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 19:11:00,214 INFO L470 AbstractCegarLoop]: Abstraction has 208 states and 223 transitions. [2021-08-30 19:11:00,214 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 6.235294117647059) internal successors, (106), 5 states have internal predecessors, (106), 2 states have call successors, (17), 13 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2021-08-30 19:11:00,214 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 223 transitions. [2021-08-30 19:11:00,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2021-08-30 19:11:00,215 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 19:11:00,215 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 19:11:00,215 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-08-30 19:11:00,216 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-08-30 19:11:00,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 19:11:00,216 INFO L82 PathProgramCache]: Analyzing trace with hash -1506473619, now seen corresponding path program 1 times [2021-08-30 19:11:00,216 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 19:11:00,216 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580076618] [2021-08-30 19:11:00,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:11:00,216 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 19:11:00,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:11:00,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:11:00,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:11:00,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-08-30 19:11:00,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:11:00,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-08-30 19:11:00,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:11:00,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-08-30 19:11:00,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:11:00,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-08-30 19:11:00,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:11:00,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-08-30 19:11:00,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:11:00,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-08-30 19:11:00,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:11:00,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-08-30 19:11:00,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:11:00,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-08-30 19:11:00,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:11:00,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-08-30 19:11:00,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:11:00,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-08-30 19:11:00,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:11:00,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-08-30 19:11:00,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:11:00,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-08-30 19:11:00,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:11:00,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-08-30 19:11:00,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:11:00,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-08-30 19:11:00,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:11:00,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-08-30 19:11:00,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:11:00,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-08-30 19:11:00,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:11:00,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-08-30 19:11:00,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:11:00,610 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-08-30 19:11:00,610 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 19:11:00,610 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580076618] [2021-08-30 19:11:00,610 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580076618] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 19:11:00,610 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 19:11:00,610 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2021-08-30 19:11:00,611 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815846949] [2021-08-30 19:11:00,611 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-08-30 19:11:00,611 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 19:11:00,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-08-30 19:11:00,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=293, Unknown=0, NotChecked=0, Total=380 [2021-08-30 19:11:00,612 INFO L87 Difference]: Start difference. First operand 208 states and 223 transitions. Second operand has 20 states, 20 states have (on average 5.2) internal successors, (104), 8 states have internal predecessors, (104), 5 states have call successors, (17), 13 states have call predecessors, (17), 3 states have return successors, (15), 6 states have call predecessors, (15), 4 states have call successors, (15) [2021-08-30 19:11:01,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 19:11:01,977 INFO L93 Difference]: Finished difference Result 351 states and 375 transitions. [2021-08-30 19:11:01,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-08-30 19:11:01,982 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.2) internal successors, (104), 8 states have internal predecessors, (104), 5 states have call successors, (17), 13 states have call predecessors, (17), 3 states have return successors, (15), 6 states have call predecessors, (15), 4 states have call successors, (15) Word has length 158 [2021-08-30 19:11:01,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 19:11:01,983 INFO L225 Difference]: With dead ends: 351 [2021-08-30 19:11:01,983 INFO L226 Difference]: Without dead ends: 211 [2021-08-30 19:11:01,984 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 541 ImplicationChecksByTransitivity, 685.95ms TimeCoverageRelationStatistics Valid=387, Invalid=1965, Unknown=0, NotChecked=0, Total=2352 [2021-08-30 19:11:01,984 INFO L928 BasicCegarLoop]: 24 mSDtfsCounter, 509 mSDsluCounter, 469 mSDsCounter, 0 mSdLazyCounter, 1734 mSolverCounterSat, 203 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 711.12ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 510 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 1937 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.18ms SdHoareTripleChecker+Time, 203 IncrementalHoareTripleChecker+Valid, 1734 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 850.94ms IncrementalHoareTripleChecker+Time [2021-08-30 19:11:01,985 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [510 Valid, 79 Invalid, 1937 Unknown, 0 Unchecked, 8.18ms Time], IncrementalHoareTripleChecker [203 Valid, 1734 Invalid, 0 Unknown, 0 Unchecked, 850.94ms Time] [2021-08-30 19:11:01,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2021-08-30 19:11:01,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 208. [2021-08-30 19:11:01,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 161 states have (on average 1.093167701863354) internal successors, (176), 162 states have internal predecessors, (176), 23 states have call successors, (23), 23 states have call predecessors, (23), 23 states have return successors, (23), 22 states have call predecessors, (23), 21 states have call successors, (23) [2021-08-30 19:11:01,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 222 transitions. [2021-08-30 19:11:01,988 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 222 transitions. Word has length 158 [2021-08-30 19:11:01,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 19:11:01,988 INFO L470 AbstractCegarLoop]: Abstraction has 208 states and 222 transitions. [2021-08-30 19:11:01,988 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.2) internal successors, (104), 8 states have internal predecessors, (104), 5 states have call successors, (17), 13 states have call predecessors, (17), 3 states have return successors, (15), 6 states have call predecessors, (15), 4 states have call successors, (15) [2021-08-30 19:11:01,988 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 222 transitions. [2021-08-30 19:11:01,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2021-08-30 19:11:01,989 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 19:11:01,989 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 19:11:01,989 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-08-30 19:11:01,990 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-08-30 19:11:01,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 19:11:01,990 INFO L82 PathProgramCache]: Analyzing trace with hash 424652015, now seen corresponding path program 1 times [2021-08-30 19:11:01,990 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 19:11:01,990 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127608645] [2021-08-30 19:11:01,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:11:01,990 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 19:11:02,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:11:02,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:11:02,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:11:02,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-08-30 19:11:02,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:11:02,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-08-30 19:11:02,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:11:02,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-08-30 19:11:02,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:11:02,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-08-30 19:11:02,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:11:02,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-08-30 19:11:02,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:11:02,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-08-30 19:11:02,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:11:02,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-08-30 19:11:02,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:11:02,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-08-30 19:11:02,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:11:02,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-08-30 19:11:02,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:11:02,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-08-30 19:11:02,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:11:02,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-08-30 19:11:02,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:11:02,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-08-30 19:11:02,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:11:02,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-08-30 19:11:02,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:11:02,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-08-30 19:11:02,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:11:02,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-08-30 19:11:02,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:11:02,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-08-30 19:11:02,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:11:02,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-08-30 19:11:02,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:11:02,545 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-08-30 19:11:02,545 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 19:11:02,545 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127608645] [2021-08-30 19:11:02,545 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127608645] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 19:11:02,545 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 19:11:02,546 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2021-08-30 19:11:02,546 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659803296] [2021-08-30 19:11:02,546 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-08-30 19:11:02,546 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 19:11:02,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-08-30 19:11:02,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=547, Unknown=0, NotChecked=0, Total=650 [2021-08-30 19:11:02,547 INFO L87 Difference]: Start difference. First operand 208 states and 222 transitions. Second operand has 26 states, 26 states have (on average 4.0) internal successors, (104), 12 states have internal predecessors, (104), 5 states have call successors, (17), 13 states have call predecessors, (17), 4 states have return successors, (15), 7 states have call predecessors, (15), 4 states have call successors, (15) [2021-08-30 19:11:03,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 19:11:03,779 INFO L93 Difference]: Finished difference Result 208 states and 223 transitions. [2021-08-30 19:11:03,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-08-30 19:11:03,779 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.0) internal successors, (104), 12 states have internal predecessors, (104), 5 states have call successors, (17), 13 states have call predecessors, (17), 4 states have return successors, (15), 7 states have call predecessors, (15), 4 states have call successors, (15) Word has length 158 [2021-08-30 19:11:03,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 19:11:03,780 INFO L225 Difference]: With dead ends: 208 [2021-08-30 19:11:03,780 INFO L226 Difference]: Without dead ends: 0 [2021-08-30 19:11:03,781 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 352 ImplicationChecksByTransitivity, 705.20ms TimeCoverageRelationStatistics Valid=287, Invalid=1783, Unknown=0, NotChecked=0, Total=2070 [2021-08-30 19:11:03,781 INFO L928 BasicCegarLoop]: 20 mSDtfsCounter, 478 mSDsluCounter, 581 mSDsCounter, 0 mSdLazyCounter, 2286 mSolverCounterSat, 197 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 697.75ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 478 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 2483 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.22ms SdHoareTripleChecker+Time, 197 IncrementalHoareTripleChecker+Valid, 2286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 845.24ms IncrementalHoareTripleChecker+Time [2021-08-30 19:11:03,781 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [478 Valid, 77 Invalid, 2483 Unknown, 0 Unchecked, 8.22ms Time], IncrementalHoareTripleChecker [197 Valid, 2286 Invalid, 0 Unknown, 0 Unchecked, 845.24ms Time] [2021-08-30 19:11:03,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-30 19:11:03,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-30 19:11:03,782 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) [2021-08-30 19:11:03,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-30 19:11:03,782 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 158 [2021-08-30 19:11:03,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 19:11:03,782 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-30 19:11:03,783 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 4.0) internal successors, (104), 12 states have internal predecessors, (104), 5 states have call successors, (17), 13 states have call predecessors, (17), 4 states have return successors, (15), 7 states have call predecessors, (15), 4 states have call successors, (15) [2021-08-30 19:11:03,783 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-30 19:11:03,783 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-30 19:11:03,785 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr0ENSURES_VIOLATIONMEMORY_LEAK (1 of 2 remaining) [2021-08-30 19:11:03,786 INFO L764 garLoopResultBuilder]: Registering result SAFE for location errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK (0 of 2 remaining) [2021-08-30 19:11:03,786 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-08-30 19:11:03,789 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-30 19:11:03,791 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 07:11:03 BoogieIcfgContainer [2021-08-30 19:11:03,791 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-30 19:11:03,792 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-30 19:11:03,792 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-30 19:11:03,792 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-30 19:11:03,792 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 07:09:48" (3/4) ... [2021-08-30 19:11:03,795 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-08-30 19:11:03,800 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure reach_error [2021-08-30 19:11:03,801 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure IoRegisterDeviceInterface [2021-08-30 19:11:03,801 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure _BLAST_init [2021-08-30 19:11:03,801 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure FloppyProcessQueuedRequests [2021-08-30 19:11:03,801 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure IoSetDeviceInterfaceState [2021-08-30 19:11:03,801 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure FloppyPnp [2021-08-30 19:11:03,801 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2021-08-30 19:11:03,801 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure FloppyCreateClose [2021-08-30 19:11:03,801 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure stubMoreProcessingRequired [2021-08-30 19:11:03,801 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure FloppyPnpComplete [2021-08-30 19:11:03,801 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure KeWaitForSingleObject [2021-08-30 19:11:03,802 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure IofCompleteRequest [2021-08-30 19:11:03,802 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure FloppyStartDevice [2021-08-30 19:11:03,802 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure PsCreateSystemThread [2021-08-30 19:11:03,802 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ObReferenceObjectByHandle [2021-08-30 19:11:03,802 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure IoBuildDeviceIoControlRequest [2021-08-30 19:11:03,802 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure KeSetEvent [2021-08-30 19:11:03,802 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure stub_driver_init [2021-08-30 19:11:03,802 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure errorFn [2021-08-30 19:11:03,802 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure FlQueueIrpToThread [2021-08-30 19:11:03,803 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure IofCallDriver [2021-08-30 19:11:03,803 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2021-08-30 19:11:03,803 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure FlFdcDeviceIo [2021-08-30 19:11:03,803 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure FlAcpiConfigureFloppy [2021-08-30 19:11:03,803 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure IoDeleteSymbolicLink [2021-08-30 19:11:03,803 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure IoQueryDeviceDescription [2021-08-30 19:11:03,803 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ZwClose [2021-08-30 19:11:03,817 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 78 nodes and edges [2021-08-30 19:11:03,818 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 45 nodes and edges [2021-08-30 19:11:03,819 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-08-30 19:11:03,820 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-08-30 19:11:03,924 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-30 19:11:03,924 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-30 19:11:03,925 INFO L158 Benchmark]: Toolchain (without parser) took 76125.71ms. Allocated memory was 60.8MB in the beginning and 226.5MB in the end (delta: 165.7MB). Free memory was 38.7MB in the beginning and 189.9MB in the end (delta: -151.1MB). Peak memory consumption was 137.9MB. Max. memory is 16.1GB. [2021-08-30 19:11:03,925 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 60.8MB. Free memory was 43.1MB in the beginning and 43.1MB in the end (delta: 47.3kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-30 19:11:03,925 INFO L158 Benchmark]: CACSL2BoogieTranslator took 402.30ms. Allocated memory is still 60.8MB. Free memory was 38.6MB in the beginning and 37.5MB in the end (delta: 1.1MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2021-08-30 19:11:03,925 INFO L158 Benchmark]: Boogie Preprocessor took 118.89ms. Allocated memory is still 60.8MB. Free memory was 37.3MB in the beginning and 34.0MB in the end (delta: 3.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-08-30 19:11:03,925 INFO L158 Benchmark]: RCFGBuilder took 577.35ms. Allocated memory was 60.8MB in the beginning and 73.4MB in the end (delta: 12.6MB). Free memory was 33.9MB in the beginning and 52.5MB in the end (delta: -18.6MB). Peak memory consumption was 18.8MB. Max. memory is 16.1GB. [2021-08-30 19:11:03,926 INFO L158 Benchmark]: TraceAbstraction took 74881.40ms. Allocated memory was 73.4MB in the beginning and 226.5MB in the end (delta: 153.1MB). Free memory was 51.8MB in the beginning and 76.4MB in the end (delta: -24.6MB). Peak memory consumption was 127.4MB. Max. memory is 16.1GB. [2021-08-30 19:11:03,926 INFO L158 Benchmark]: Witness Printer took 132.71ms. Allocated memory is still 226.5MB. Free memory was 76.4MB in the beginning and 189.9MB in the end (delta: -113.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-08-30 19:11:03,927 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 60.8MB. Free memory was 43.1MB in the beginning and 43.1MB in the end (delta: 47.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 402.30ms. Allocated memory is still 60.8MB. Free memory was 38.6MB in the beginning and 37.5MB in the end (delta: 1.1MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Preprocessor took 118.89ms. Allocated memory is still 60.8MB. Free memory was 37.3MB in the beginning and 34.0MB in the end (delta: 3.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 577.35ms. Allocated memory was 60.8MB in the beginning and 73.4MB in the end (delta: 12.6MB). Free memory was 33.9MB in the beginning and 52.5MB in the end (delta: -18.6MB). Peak memory consumption was 18.8MB. Max. memory is 16.1GB. * TraceAbstraction took 74881.40ms. Allocated memory was 73.4MB in the beginning and 226.5MB in the end (delta: 153.1MB). Free memory was 51.8MB in the beginning and 76.4MB in the end (delta: -24.6MB). Peak memory consumption was 127.4MB. Max. memory is 16.1GB. * Witness Printer took 132.71ms. Allocated memory is still 226.5MB. Free memory was 76.4MB in the beginning and 189.9MB in the end (delta: -113.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.00ms ErrorAutomatonConstructionTimeTotal, 0.00ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.00ms ErrorAutomatonConstructionTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 670]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 65]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 28 procedures, 313 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 74839.18ms, OverallIterations: 51, TraceHistogramMax: 2, EmptinessCheckTime: 71.39ms, AutomataDifference: 60046.23ms, DeadEndRemovalTime: 0.00ms, HoareAnnotationTime: 0.00ms, InitialAbstractionConstructionTime: 15.16ms, PartialOrderReductionTime: 0.00ms, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 22306 SdHoareTripleChecker+Valid, 50420.94ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 21994 mSDsluCounter, 11450 SdHoareTripleChecker+Invalid, 42204.45ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 35616 mSDsCounter, 7549 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 96799 IncrementalHoareTripleChecker+Invalid, 104348 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 7549 mSolverCounterUnsat, 3171 mSDtfsCounter, 96799 mSolverCounterSat, 490.83ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1520 GetRequests, 695 SyntacticMatches, 0 SemanticMatches, 825 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2856 ImplicationChecksByTransitivity, 15327.71ms Time, 0.00ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=831occurred in iteration=11, InterpolantAutomatonStates: 665, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.00ms DumpTime, AutomataMinimizationStatistics: 670.45ms AutomataMinimizationTime, 51 MinimizatonAttempts, 2436 StatesRemovedByMinimization, 49 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 197.58ms SsaConstructionTime, 672.50ms SatisfiabilityAnalysisTime, 12691.50ms InterpolantComputationTime, 3807 NumberOfCodeBlocks, 3807 NumberOfCodeBlocksAsserted, 51 NumberOfCheckSat, 3756 ConstructedInterpolants, 0 QuantifiedInterpolants, 17225 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 51 InterpolantComputations, 51 PerfectInterpolantSequences, 204/204 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-08-30 19:11:03,967 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...