./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ntdrivers-simplified/kbfiltr_simpl1.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389452d5-f8c3-4265-b109-2fa8cb794c7e/bin/utaipan-tZwUujhuQw/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389452d5-f8c3-4265-b109-2fa8cb794c7e/bin/utaipan-tZwUujhuQw/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389452d5-f8c3-4265-b109-2fa8cb794c7e/bin/utaipan-tZwUujhuQw/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389452d5-f8c3-4265-b109-2fa8cb794c7e/bin/utaipan-tZwUujhuQw/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ntdrivers-simplified/kbfiltr_simpl1.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389452d5-f8c3-4265-b109-2fa8cb794c7e/bin/utaipan-tZwUujhuQw/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389452d5-f8c3-4265-b109-2fa8cb794c7e/bin/utaipan-tZwUujhuQw --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash db1e722f73dbd7795cdbaca4c816f6c8a0f90138145d9f90bf0f222b7dd371eb .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-20 05:18:13,359 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-20 05:18:13,361 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-20 05:18:13,404 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-20 05:18:13,404 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-20 05:18:13,408 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-20 05:18:13,411 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-20 05:18:13,414 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-20 05:18:13,418 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-20 05:18:13,423 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-20 05:18:13,424 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-20 05:18:13,426 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-20 05:18:13,427 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-20 05:18:13,430 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-20 05:18:13,432 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-20 05:18:13,437 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-20 05:18:13,438 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-20 05:18:13,440 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-20 05:18:13,442 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-20 05:18:13,449 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-20 05:18:13,451 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-20 05:18:13,452 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-20 05:18:13,455 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-20 05:18:13,456 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-20 05:18:13,465 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-20 05:18:13,466 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-20 05:18:13,466 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-20 05:18:13,468 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-20 05:18:13,469 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-20 05:18:13,470 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-20 05:18:13,471 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-20 05:18:13,472 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-20 05:18:13,474 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-20 05:18:13,475 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-20 05:18:13,477 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-20 05:18:13,477 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-20 05:18:13,478 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-20 05:18:13,478 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-20 05:18:13,478 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-20 05:18:13,479 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-20 05:18:13,480 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-20 05:18:13,481 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389452d5-f8c3-4265-b109-2fa8cb794c7e/bin/utaipan-tZwUujhuQw/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-10-20 05:18:13,505 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-20 05:18:13,505 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-20 05:18:13,506 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-20 05:18:13,506 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-20 05:18:13,506 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-20 05:18:13,506 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-20 05:18:13,506 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-20 05:18:13,507 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-20 05:18:13,507 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-20 05:18:13,507 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-20 05:18:13,507 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-20 05:18:13,507 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-20 05:18:13,507 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-20 05:18:13,508 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-20 05:18:13,508 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-20 05:18:13,508 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-20 05:18:13,509 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-20 05:18:13,509 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-20 05:18:13,509 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-20 05:18:13,509 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-20 05:18:13,509 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-20 05:18:13,510 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-20 05:18:13,510 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-20 05:18:13,510 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-20 05:18:13,510 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-20 05:18:13,510 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-20 05:18:13,510 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-20 05:18:13,511 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-20 05:18:13,511 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-20 05:18:13,511 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-20 05:18:13,511 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-20 05:18:13,511 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-20 05:18:13,512 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-20 05:18:13,512 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-20 05:18:13,512 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-20 05:18:13,512 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-20 05:18:13,512 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-20 05:18:13,513 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-20 05:18:13,513 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-20 05:18:13,513 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389452d5-f8c3-4265-b109-2fa8cb794c7e/bin/utaipan-tZwUujhuQw/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389452d5-f8c3-4265-b109-2fa8cb794c7e/bin/utaipan-tZwUujhuQw Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> db1e722f73dbd7795cdbaca4c816f6c8a0f90138145d9f90bf0f222b7dd371eb [2021-10-20 05:18:13,757 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-20 05:18:13,778 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-20 05:18:13,781 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-20 05:18:13,782 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-20 05:18:13,783 INFO L275 PluginConnector]: CDTParser initialized [2021-10-20 05:18:13,784 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389452d5-f8c3-4265-b109-2fa8cb794c7e/bin/utaipan-tZwUujhuQw/../../sv-benchmarks/c/ntdrivers-simplified/kbfiltr_simpl1.cil.c [2021-10-20 05:18:13,852 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389452d5-f8c3-4265-b109-2fa8cb794c7e/bin/utaipan-tZwUujhuQw/data/54c05cc2e/2218131b1e49421485282c2da2b321bf/FLAG67b50078b [2021-10-20 05:18:14,411 INFO L306 CDTParser]: Found 1 translation units. [2021-10-20 05:18:14,418 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389452d5-f8c3-4265-b109-2fa8cb794c7e/sv-benchmarks/c/ntdrivers-simplified/kbfiltr_simpl1.cil.c [2021-10-20 05:18:14,430 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389452d5-f8c3-4265-b109-2fa8cb794c7e/bin/utaipan-tZwUujhuQw/data/54c05cc2e/2218131b1e49421485282c2da2b321bf/FLAG67b50078b [2021-10-20 05:18:14,743 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389452d5-f8c3-4265-b109-2fa8cb794c7e/bin/utaipan-tZwUujhuQw/data/54c05cc2e/2218131b1e49421485282c2da2b321bf [2021-10-20 05:18:14,745 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-20 05:18:14,747 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-20 05:18:14,753 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-20 05:18:14,753 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-20 05:18:14,757 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-20 05:18:14,758 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 05:18:14" (1/1) ... [2021-10-20 05:18:14,760 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f003d4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:18:14, skipping insertion in model container [2021-10-20 05:18:14,762 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 05:18:14" (1/1) ... [2021-10-20 05:18:14,770 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-20 05:18:14,823 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-20 05:18:15,056 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389452d5-f8c3-4265-b109-2fa8cb794c7e/sv-benchmarks/c/ntdrivers-simplified/kbfiltr_simpl1.cil.c[17080,17093] [2021-10-20 05:18:15,062 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-20 05:18:15,070 INFO L203 MainTranslator]: Completed pre-run [2021-10-20 05:18:15,115 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389452d5-f8c3-4265-b109-2fa8cb794c7e/sv-benchmarks/c/ntdrivers-simplified/kbfiltr_simpl1.cil.c[17080,17093] [2021-10-20 05:18:15,116 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-20 05:18:15,131 INFO L208 MainTranslator]: Completed translation [2021-10-20 05:18:15,131 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:18:15 WrapperNode [2021-10-20 05:18:15,132 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-20 05:18:15,137 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-20 05:18:15,138 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-20 05:18:15,138 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-20 05:18:15,148 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:18:15" (1/1) ... [2021-10-20 05:18:15,158 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:18:15" (1/1) ... [2021-10-20 05:18:15,215 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-20 05:18:15,216 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-20 05:18:15,217 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-20 05:18:15,217 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-20 05:18:15,226 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:18:15" (1/1) ... [2021-10-20 05:18:15,226 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:18:15" (1/1) ... [2021-10-20 05:18:15,232 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:18:15" (1/1) ... [2021-10-20 05:18:15,232 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:18:15" (1/1) ... [2021-10-20 05:18:15,246 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:18:15" (1/1) ... [2021-10-20 05:18:15,254 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:18:15" (1/1) ... [2021-10-20 05:18:15,258 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:18:15" (1/1) ... [2021-10-20 05:18:15,266 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-20 05:18:15,267 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-20 05:18:15,267 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-20 05:18:15,267 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-20 05:18:15,269 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:18:15" (1/1) ... [2021-10-20 05:18:15,291 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-20 05:18:15,306 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389452d5-f8c3-4265-b109-2fa8cb794c7e/bin/utaipan-tZwUujhuQw/z3 [2021-10-20 05:18:15,321 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389452d5-f8c3-4265-b109-2fa8cb794c7e/bin/utaipan-tZwUujhuQw/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-20 05:18:15,340 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389452d5-f8c3-4265-b109-2fa8cb794c7e/bin/utaipan-tZwUujhuQw/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-20 05:18:15,386 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-20 05:18:15,387 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-20 05:18:15,387 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-20 05:18:15,387 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-20 05:18:15,509 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-20 05:18:15,516 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-20 05:18:15,525 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-20 05:18:15,535 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-20 05:18:15,551 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-20 05:18:15,558 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-20 05:18:15,565 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-20 05:18:16,332 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##76: assume !false; [2021-10-20 05:18:16,338 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##75: assume false; [2021-10-20 05:18:16,338 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##184: assume false; [2021-10-20 05:18:16,338 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##185: assume !false; [2021-10-20 05:18:16,339 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##58: assume !false; [2021-10-20 05:18:16,339 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##57: assume false; [2021-10-20 05:18:16,339 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##131: assume !false; [2021-10-20 05:18:16,339 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##130: assume false; [2021-10-20 05:18:16,340 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##14: assume !false; [2021-10-20 05:18:16,340 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##13: assume false; [2021-10-20 05:18:16,341 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##158: assume !false; [2021-10-20 05:18:16,341 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##157: assume false; [2021-10-20 05:18:16,341 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##106: assume !false; [2021-10-20 05:18:16,342 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##105: assume false; [2021-10-20 05:18:16,942 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-20 05:18:16,943 INFO L299 CfgBuilder]: Removed 78 assume(true) statements. [2021-10-20 05:18:16,947 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 05:18:16 BoogieIcfgContainer [2021-10-20 05:18:16,947 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-20 05:18:16,949 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-20 05:18:16,949 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-20 05:18:16,953 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-20 05:18:16,953 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 05:18:14" (1/3) ... [2021-10-20 05:18:16,954 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d30314e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 05:18:16, skipping insertion in model container [2021-10-20 05:18:16,954 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:18:15" (2/3) ... [2021-10-20 05:18:16,955 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d30314e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 05:18:16, skipping insertion in model container [2021-10-20 05:18:16,955 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 05:18:16" (3/3) ... [2021-10-20 05:18:16,957 INFO L111 eAbstractionObserver]: Analyzing ICFG kbfiltr_simpl1.cil.c [2021-10-20 05:18:16,964 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-20 05:18:16,964 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 17 error locations. [2021-10-20 05:18:17,021 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-20 05:18:17,030 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-20 05:18:17,030 INFO L340 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2021-10-20 05:18:17,052 INFO L276 IsEmpty]: Start isEmpty. Operand has 100 states, 82 states have (on average 1.7926829268292683) internal successors, (147), 99 states have internal predecessors, (147), 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) [2021-10-20 05:18:17,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-20 05:18:17,061 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 05:18:17,062 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-20 05:18:17,063 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 14 more)] === [2021-10-20 05:18:17,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 05:18:17,069 INFO L82 PathProgramCache]: Analyzing trace with hash 21468188, now seen corresponding path program 1 times [2021-10-20 05:18:17,079 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-20 05:18:17,079 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529276689] [2021-10-20 05:18:17,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 05:18:17,081 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-20 05:18:17,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 05:18:17,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:18:17,314 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-20 05:18:17,315 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529276689] [2021-10-20 05:18:17,316 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529276689] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-20 05:18:17,316 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-20 05:18:17,316 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-20 05:18:17,318 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875041193] [2021-10-20 05:18:17,333 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-20 05:18:17,341 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-20 05:18:17,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-20 05:18:17,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-20 05:18:17,357 INFO L87 Difference]: Start difference. First operand has 100 states, 82 states have (on average 1.7926829268292683) internal successors, (147), 99 states have internal predecessors, (147), 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) Second operand has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 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) [2021-10-20 05:18:17,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 05:18:17,438 INFO L93 Difference]: Finished difference Result 103 states and 131 transitions. [2021-10-20 05:18:17,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-20 05:18:17,439 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2021-10-20 05:18:17,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 05:18:17,452 INFO L225 Difference]: With dead ends: 103 [2021-10-20 05:18:17,452 INFO L226 Difference]: Without dead ends: 101 [2021-10-20 05:18:17,454 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.4ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-20 05:18:17,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2021-10-20 05:18:17,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 99. [2021-10-20 05:18:17,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 82 states have (on average 1.5609756097560976) internal successors, (128), 98 states have internal predecessors, (128), 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) [2021-10-20 05:18:17,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 128 transitions. [2021-10-20 05:18:17,506 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 128 transitions. Word has length 4 [2021-10-20 05:18:17,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 05:18:17,506 INFO L470 AbstractCegarLoop]: Abstraction has 99 states and 128 transitions. [2021-10-20 05:18:17,508 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 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) [2021-10-20 05:18:17,509 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 128 transitions. [2021-10-20 05:18:17,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-20 05:18:17,509 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 05:18:17,510 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-20 05:18:17,510 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-20 05:18:17,510 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 14 more)] === [2021-10-20 05:18:17,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 05:18:17,514 INFO L82 PathProgramCache]: Analyzing trace with hash 665516531, now seen corresponding path program 1 times [2021-10-20 05:18:17,514 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-20 05:18:17,515 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735899780] [2021-10-20 05:18:17,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 05:18:17,515 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-20 05:18:17,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 05:18:17,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:18:17,595 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-20 05:18:17,595 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735899780] [2021-10-20 05:18:17,596 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735899780] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-20 05:18:17,596 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-20 05:18:17,596 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-20 05:18:17,597 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050083186] [2021-10-20 05:18:17,598 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-20 05:18:17,599 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-20 05:18:17,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-20 05:18:17,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-20 05:18:17,601 INFO L87 Difference]: Start difference. First operand 99 states and 128 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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) [2021-10-20 05:18:17,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 05:18:17,618 INFO L93 Difference]: Finished difference Result 98 states and 127 transitions. [2021-10-20 05:18:17,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-20 05:18:17,618 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-20 05:18:17,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 05:18:17,619 INFO L225 Difference]: With dead ends: 98 [2021-10-20 05:18:17,619 INFO L226 Difference]: Without dead ends: 96 [2021-10-20 05:18:17,620 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-20 05:18:17,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2021-10-20 05:18:17,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2021-10-20 05:18:17,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 80 states have (on average 1.475) internal successors, (118), 95 states have internal predecessors, (118), 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) [2021-10-20 05:18:17,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 118 transitions. [2021-10-20 05:18:17,627 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 118 transitions. Word has length 5 [2021-10-20 05:18:17,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 05:18:17,628 INFO L470 AbstractCegarLoop]: Abstraction has 96 states and 118 transitions. [2021-10-20 05:18:17,628 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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) [2021-10-20 05:18:17,628 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 118 transitions. [2021-10-20 05:18:17,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-20 05:18:17,629 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 05:18:17,629 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-20 05:18:17,629 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-20 05:18:17,629 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 14 more)] === [2021-10-20 05:18:17,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 05:18:17,630 INFO L82 PathProgramCache]: Analyzing trace with hash -387849200, now seen corresponding path program 1 times [2021-10-20 05:18:17,630 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-20 05:18:17,631 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627338597] [2021-10-20 05:18:17,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 05:18:17,631 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-20 05:18:17,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 05:18:17,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:18:17,714 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-20 05:18:17,714 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627338597] [2021-10-20 05:18:17,715 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627338597] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-20 05:18:17,715 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-20 05:18:17,715 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-20 05:18:17,716 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548430604] [2021-10-20 05:18:17,716 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-20 05:18:17,716 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-20 05:18:17,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-20 05:18:17,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-20 05:18:17,720 INFO L87 Difference]: Start difference. First operand 96 states and 118 transitions. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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) [2021-10-20 05:18:17,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 05:18:17,798 INFO L93 Difference]: Finished difference Result 91 states and 113 transitions. [2021-10-20 05:18:17,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-20 05:18:17,798 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-20 05:18:17,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 05:18:17,803 INFO L225 Difference]: With dead ends: 91 [2021-10-20 05:18:17,803 INFO L226 Difference]: Without dead ends: 91 [2021-10-20 05:18:17,804 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-20 05:18:17,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2021-10-20 05:18:17,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2021-10-20 05:18:17,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 80 states have (on average 1.4125) internal successors, (113), 90 states have internal predecessors, (113), 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) [2021-10-20 05:18:17,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 113 transitions. [2021-10-20 05:18:17,826 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 113 transitions. Word has length 7 [2021-10-20 05:18:17,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 05:18:17,827 INFO L470 AbstractCegarLoop]: Abstraction has 91 states and 113 transitions. [2021-10-20 05:18:17,827 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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) [2021-10-20 05:18:17,828 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 113 transitions. [2021-10-20 05:18:17,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-20 05:18:17,829 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 05:18:17,829 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-20 05:18:17,830 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-20 05:18:17,830 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 14 more)] === [2021-10-20 05:18:17,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 05:18:17,831 INFO L82 PathProgramCache]: Analyzing trace with hash 861582826, now seen corresponding path program 1 times [2021-10-20 05:18:17,831 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-20 05:18:17,831 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161433192] [2021-10-20 05:18:17,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 05:18:17,832 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-20 05:18:17,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 05:18:17,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:18:17,892 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-20 05:18:17,892 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161433192] [2021-10-20 05:18:17,892 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161433192] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-20 05:18:17,893 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-20 05:18:17,893 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-20 05:18:17,893 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330294070] [2021-10-20 05:18:17,893 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-20 05:18:17,894 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-20 05:18:17,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-20 05:18:17,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-20 05:18:17,895 INFO L87 Difference]: Start difference. First operand 91 states and 113 transitions. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:18:17,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 05:18:17,912 INFO L93 Difference]: Finished difference Result 110 states and 136 transitions. [2021-10-20 05:18:17,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-20 05:18:17,913 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-20 05:18:17,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 05:18:17,914 INFO L225 Difference]: With dead ends: 110 [2021-10-20 05:18:17,914 INFO L226 Difference]: Without dead ends: 110 [2021-10-20 05:18:17,915 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-20 05:18:17,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2021-10-20 05:18:17,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 80. [2021-10-20 05:18:17,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 73 states have (on average 1.356164383561644) internal successors, (99), 79 states have internal predecessors, (99), 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) [2021-10-20 05:18:17,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 99 transitions. [2021-10-20 05:18:17,920 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 99 transitions. Word has length 8 [2021-10-20 05:18:17,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 05:18:17,920 INFO L470 AbstractCegarLoop]: Abstraction has 80 states and 99 transitions. [2021-10-20 05:18:17,921 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:18:17,921 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 99 transitions. [2021-10-20 05:18:17,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-20 05:18:17,922 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 05:18:17,922 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-20 05:18:17,922 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-20 05:18:17,923 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 14 more)] === [2021-10-20 05:18:17,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 05:18:17,923 INFO L82 PathProgramCache]: Analyzing trace with hash -456155771, now seen corresponding path program 1 times [2021-10-20 05:18:17,924 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-20 05:18:17,924 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312407543] [2021-10-20 05:18:17,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 05:18:17,924 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-20 05:18:17,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 05:18:17,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:18:17,972 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-20 05:18:17,972 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312407543] [2021-10-20 05:18:17,972 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312407543] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-20 05:18:17,972 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-20 05:18:17,972 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-20 05:18:17,973 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511439839] [2021-10-20 05:18:17,973 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-20 05:18:17,973 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-20 05:18:17,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-20 05:18:17,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-20 05:18:17,974 INFO L87 Difference]: Start difference. First operand 80 states and 99 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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) [2021-10-20 05:18:18,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 05:18:18,033 INFO L93 Difference]: Finished difference Result 74 states and 93 transitions. [2021-10-20 05:18:18,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-20 05:18:18,034 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-20 05:18:18,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 05:18:18,035 INFO L225 Difference]: With dead ends: 74 [2021-10-20 05:18:18,035 INFO L226 Difference]: Without dead ends: 74 [2021-10-20 05:18:18,036 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-20 05:18:18,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-10-20 05:18:18,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2021-10-20 05:18:18,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 70 states have (on average 1.3285714285714285) internal successors, (93), 73 states have internal predecessors, (93), 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) [2021-10-20 05:18:18,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 93 transitions. [2021-10-20 05:18:18,051 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 93 transitions. Word has length 14 [2021-10-20 05:18:18,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 05:18:18,051 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 93 transitions. [2021-10-20 05:18:18,051 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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) [2021-10-20 05:18:18,051 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 93 transitions. [2021-10-20 05:18:18,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-20 05:18:18,052 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 05:18:18,052 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-20 05:18:18,053 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-20 05:18:18,053 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 14 more)] === [2021-10-20 05:18:18,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 05:18:18,053 INFO L82 PathProgramCache]: Analyzing trace with hash -1250203262, now seen corresponding path program 1 times [2021-10-20 05:18:18,054 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-20 05:18:18,054 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609955719] [2021-10-20 05:18:18,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 05:18:18,054 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-20 05:18:18,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 05:18:18,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:18:18,108 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-20 05:18:18,108 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609955719] [2021-10-20 05:18:18,109 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609955719] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-20 05:18:18,109 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-20 05:18:18,109 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-20 05:18:18,109 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633547749] [2021-10-20 05:18:18,110 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-20 05:18:18,110 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-20 05:18:18,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-20 05:18:18,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-20 05:18:18,111 INFO L87 Difference]: Start difference. First operand 74 states and 93 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:18:18,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 05:18:18,150 INFO L93 Difference]: Finished difference Result 71 states and 89 transitions. [2021-10-20 05:18:18,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-20 05:18:18,151 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-20 05:18:18,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 05:18:18,151 INFO L225 Difference]: With dead ends: 71 [2021-10-20 05:18:18,152 INFO L226 Difference]: Without dead ends: 71 [2021-10-20 05:18:18,152 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-20 05:18:18,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2021-10-20 05:18:18,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2021-10-20 05:18:18,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 68 states have (on average 1.3088235294117647) internal successors, (89), 70 states have internal predecessors, (89), 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) [2021-10-20 05:18:18,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 89 transitions. [2021-10-20 05:18:18,155 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 89 transitions. Word has length 15 [2021-10-20 05:18:18,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 05:18:18,155 INFO L470 AbstractCegarLoop]: Abstraction has 71 states and 89 transitions. [2021-10-20 05:18:18,155 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:18:18,156 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 89 transitions. [2021-10-20 05:18:18,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-20 05:18:18,156 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 05:18:18,157 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-20 05:18:18,157 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-20 05:18:18,157 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 14 more)] === [2021-10-20 05:18:18,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 05:18:18,158 INFO L82 PathProgramCache]: Analyzing trace with hash -883878841, now seen corresponding path program 1 times [2021-10-20 05:18:18,158 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-20 05:18:18,158 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584396963] [2021-10-20 05:18:18,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 05:18:18,158 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-20 05:18:18,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 05:18:18,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:18:18,200 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-20 05:18:18,201 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584396963] [2021-10-20 05:18:18,201 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584396963] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-20 05:18:18,201 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-20 05:18:18,201 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-20 05:18:18,201 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692614984] [2021-10-20 05:18:18,202 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-20 05:18:18,202 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-20 05:18:18,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-20 05:18:18,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-20 05:18:18,203 INFO L87 Difference]: Start difference. First operand 71 states and 89 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 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) [2021-10-20 05:18:18,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 05:18:18,238 INFO L93 Difference]: Finished difference Result 83 states and 103 transitions. [2021-10-20 05:18:18,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-20 05:18:18,238 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-20 05:18:18,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 05:18:18,239 INFO L225 Difference]: With dead ends: 83 [2021-10-20 05:18:18,239 INFO L226 Difference]: Without dead ends: 83 [2021-10-20 05:18:18,240 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 21.3ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-20 05:18:18,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2021-10-20 05:18:18,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 69. [2021-10-20 05:18:18,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 66 states have (on average 1.303030303030303) internal successors, (86), 68 states have internal predecessors, (86), 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) [2021-10-20 05:18:18,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 86 transitions. [2021-10-20 05:18:18,242 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 86 transitions. Word has length 16 [2021-10-20 05:18:18,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 05:18:18,243 INFO L470 AbstractCegarLoop]: Abstraction has 69 states and 86 transitions. [2021-10-20 05:18:18,243 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 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) [2021-10-20 05:18:18,243 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 86 transitions. [2021-10-20 05:18:18,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-20 05:18:18,244 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 05:18:18,244 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-20 05:18:18,244 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-20 05:18:18,245 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 14 more)] === [2021-10-20 05:18:18,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 05:18:18,245 INFO L82 PathProgramCache]: Analyzing trace with hash 1517958952, now seen corresponding path program 1 times [2021-10-20 05:18:18,245 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-20 05:18:18,245 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793766021] [2021-10-20 05:18:18,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 05:18:18,246 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-20 05:18:18,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 05:18:18,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:18:18,306 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-20 05:18:18,306 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793766021] [2021-10-20 05:18:18,306 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793766021] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-20 05:18:18,306 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-20 05:18:18,306 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-20 05:18:18,307 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077668220] [2021-10-20 05:18:18,307 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-20 05:18:18,307 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-20 05:18:18,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-20 05:18:18,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-20 05:18:18,308 INFO L87 Difference]: Start difference. First operand 69 states and 86 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 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) [2021-10-20 05:18:18,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 05:18:18,395 INFO L93 Difference]: Finished difference Result 80 states and 98 transitions. [2021-10-20 05:18:18,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-20 05:18:18,396 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-20 05:18:18,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 05:18:18,397 INFO L225 Difference]: With dead ends: 80 [2021-10-20 05:18:18,397 INFO L226 Difference]: Without dead ends: 80 [2021-10-20 05:18:18,397 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.1ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-20 05:18:18,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-10-20 05:18:18,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 69. [2021-10-20 05:18:18,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 66 states have (on average 1.2878787878787878) internal successors, (85), 68 states have internal predecessors, (85), 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) [2021-10-20 05:18:18,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 85 transitions. [2021-10-20 05:18:18,401 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 85 transitions. Word has length 17 [2021-10-20 05:18:18,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 05:18:18,404 INFO L470 AbstractCegarLoop]: Abstraction has 69 states and 85 transitions. [2021-10-20 05:18:18,404 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 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) [2021-10-20 05:18:18,404 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 85 transitions. [2021-10-20 05:18:18,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-20 05:18:18,406 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 05:18:18,406 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-20 05:18:18,406 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-20 05:18:18,407 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 14 more)] === [2021-10-20 05:18:18,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 05:18:18,412 INFO L82 PathProgramCache]: Analyzing trace with hash -1203144406, now seen corresponding path program 1 times [2021-10-20 05:18:18,413 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-20 05:18:18,413 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938438790] [2021-10-20 05:18:18,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 05:18:18,414 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-20 05:18:18,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 05:18:18,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:18:18,515 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-20 05:18:18,515 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938438790] [2021-10-20 05:18:18,515 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938438790] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-20 05:18:18,515 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-20 05:18:18,516 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-20 05:18:18,516 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710392528] [2021-10-20 05:18:18,516 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-20 05:18:18,517 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-20 05:18:18,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-20 05:18:18,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-20 05:18:18,518 INFO L87 Difference]: Start difference. First operand 69 states and 85 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 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) [2021-10-20 05:18:18,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 05:18:18,631 INFO L93 Difference]: Finished difference Result 88 states and 107 transitions. [2021-10-20 05:18:18,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-20 05:18:18,632 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-20 05:18:18,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 05:18:18,633 INFO L225 Difference]: With dead ends: 88 [2021-10-20 05:18:18,633 INFO L226 Difference]: Without dead ends: 88 [2021-10-20 05:18:18,634 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 23.4ms TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-10-20 05:18:18,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2021-10-20 05:18:18,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 69. [2021-10-20 05:18:18,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 66 states have (on average 1.2878787878787878) internal successors, (85), 68 states have internal predecessors, (85), 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) [2021-10-20 05:18:18,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 85 transitions. [2021-10-20 05:18:18,637 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 85 transitions. Word has length 18 [2021-10-20 05:18:18,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 05:18:18,637 INFO L470 AbstractCegarLoop]: Abstraction has 69 states and 85 transitions. [2021-10-20 05:18:18,638 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 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) [2021-10-20 05:18:18,638 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 85 transitions. [2021-10-20 05:18:18,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-20 05:18:18,639 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 05:18:18,639 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-20 05:18:18,639 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-20 05:18:18,640 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 14 more)] === [2021-10-20 05:18:18,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 05:18:18,640 INFO L82 PathProgramCache]: Analyzing trace with hash 1302547040, now seen corresponding path program 1 times [2021-10-20 05:18:18,641 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-20 05:18:18,641 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080266724] [2021-10-20 05:18:18,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 05:18:18,641 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-20 05:18:18,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 05:18:18,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:18:18,674 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-20 05:18:18,674 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080266724] [2021-10-20 05:18:18,674 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080266724] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-20 05:18:18,674 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-20 05:18:18,675 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-20 05:18:18,675 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136067074] [2021-10-20 05:18:18,675 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-20 05:18:18,676 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-20 05:18:18,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-20 05:18:18,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-20 05:18:18,678 INFO L87 Difference]: Start difference. First operand 69 states and 85 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 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) [2021-10-20 05:18:18,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 05:18:18,722 INFO L93 Difference]: Finished difference Result 80 states and 98 transitions. [2021-10-20 05:18:18,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-20 05:18:18,723 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-10-20 05:18:18,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 05:18:18,724 INFO L225 Difference]: With dead ends: 80 [2021-10-20 05:18:18,724 INFO L226 Difference]: Without dead ends: 80 [2021-10-20 05:18:18,724 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-20 05:18:18,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-10-20 05:18:18,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 71. [2021-10-20 05:18:18,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 68 states have (on average 1.2941176470588236) internal successors, (88), 70 states have internal predecessors, (88), 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) [2021-10-20 05:18:18,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 88 transitions. [2021-10-20 05:18:18,727 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 88 transitions. Word has length 19 [2021-10-20 05:18:18,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 05:18:18,728 INFO L470 AbstractCegarLoop]: Abstraction has 71 states and 88 transitions. [2021-10-20 05:18:18,728 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 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) [2021-10-20 05:18:18,728 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 88 transitions. [2021-10-20 05:18:18,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-20 05:18:18,729 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 05:18:18,730 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-20 05:18:18,730 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-20 05:18:18,730 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 14 more)] === [2021-10-20 05:18:18,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 05:18:18,734 INFO L82 PathProgramCache]: Analyzing trace with hash 1716593601, now seen corresponding path program 1 times [2021-10-20 05:18:18,735 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-20 05:18:18,740 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823085270] [2021-10-20 05:18:18,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 05:18:18,740 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-20 05:18:18,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 05:18:18,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:18:18,794 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-20 05:18:18,794 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823085270] [2021-10-20 05:18:18,795 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823085270] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-20 05:18:18,795 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-20 05:18:18,795 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-20 05:18:18,795 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578762774] [2021-10-20 05:18:18,795 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-20 05:18:18,795 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-20 05:18:18,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-20 05:18:18,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-20 05:18:18,796 INFO L87 Difference]: Start difference. First operand 71 states and 88 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 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) [2021-10-20 05:18:18,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 05:18:18,806 INFO L93 Difference]: Finished difference Result 84 states and 102 transitions. [2021-10-20 05:18:18,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-20 05:18:18,807 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-20 05:18:18,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 05:18:18,808 INFO L225 Difference]: With dead ends: 84 [2021-10-20 05:18:18,808 INFO L226 Difference]: Without dead ends: 84 [2021-10-20 05:18:18,808 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-20 05:18:18,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2021-10-20 05:18:18,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 67. [2021-10-20 05:18:18,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 65 states have (on average 1.2615384615384615) internal successors, (82), 66 states have internal predecessors, (82), 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) [2021-10-20 05:18:18,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 82 transitions. [2021-10-20 05:18:18,811 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 82 transitions. Word has length 20 [2021-10-20 05:18:18,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 05:18:18,812 INFO L470 AbstractCegarLoop]: Abstraction has 67 states and 82 transitions. [2021-10-20 05:18:18,812 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 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) [2021-10-20 05:18:18,812 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 82 transitions. [2021-10-20 05:18:18,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-20 05:18:18,813 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 05:18:18,813 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-20 05:18:18,813 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-20 05:18:18,814 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 14 more)] === [2021-10-20 05:18:18,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 05:18:18,814 INFO L82 PathProgramCache]: Analyzing trace with hash -887733495, now seen corresponding path program 1 times [2021-10-20 05:18:18,815 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-20 05:18:18,815 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925315158] [2021-10-20 05:18:18,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 05:18:18,815 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-20 05:18:18,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 05:18:18,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:18:18,856 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-20 05:18:18,856 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925315158] [2021-10-20 05:18:18,856 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925315158] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-20 05:18:18,857 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-20 05:18:18,857 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-20 05:18:18,857 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585064816] [2021-10-20 05:18:18,857 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-20 05:18:18,858 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-20 05:18:18,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-20 05:18:18,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-20 05:18:18,859 INFO L87 Difference]: Start difference. First operand 67 states and 82 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 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) [2021-10-20 05:18:18,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 05:18:18,915 INFO L93 Difference]: Finished difference Result 78 states and 92 transitions. [2021-10-20 05:18:18,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-20 05:18:18,915 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-10-20 05:18:18,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 05:18:18,916 INFO L225 Difference]: With dead ends: 78 [2021-10-20 05:18:18,916 INFO L226 Difference]: Without dead ends: 78 [2021-10-20 05:18:18,916 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.7ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-20 05:18:18,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-10-20 05:18:18,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 67. [2021-10-20 05:18:18,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 65 states have (on average 1.2153846153846153) internal successors, (79), 66 states have internal predecessors, (79), 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) [2021-10-20 05:18:18,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 79 transitions. [2021-10-20 05:18:18,919 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 79 transitions. Word has length 21 [2021-10-20 05:18:18,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 05:18:18,919 INFO L470 AbstractCegarLoop]: Abstraction has 67 states and 79 transitions. [2021-10-20 05:18:18,920 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 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) [2021-10-20 05:18:18,920 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 79 transitions. [2021-10-20 05:18:18,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-20 05:18:18,920 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 05:18:18,921 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-20 05:18:18,921 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-10-20 05:18:18,921 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 14 more)] === [2021-10-20 05:18:18,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 05:18:18,922 INFO L82 PathProgramCache]: Analyzing trace with hash 19895836, now seen corresponding path program 1 times [2021-10-20 05:18:18,922 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-20 05:18:18,922 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528255852] [2021-10-20 05:18:18,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 05:18:18,922 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-20 05:18:18,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 05:18:18,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:18:18,971 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-20 05:18:18,971 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528255852] [2021-10-20 05:18:18,971 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528255852] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-20 05:18:18,971 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-20 05:18:18,971 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-20 05:18:18,972 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869685562] [2021-10-20 05:18:18,972 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-20 05:18:18,972 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-20 05:18:18,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-20 05:18:18,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-20 05:18:18,973 INFO L87 Difference]: Start difference. First operand 67 states and 79 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 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) [2021-10-20 05:18:18,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 05:18:18,998 INFO L93 Difference]: Finished difference Result 62 states and 72 transitions. [2021-10-20 05:18:18,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-20 05:18:18,999 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-20 05:18:18,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 05:18:18,999 INFO L225 Difference]: With dead ends: 62 [2021-10-20 05:18:18,999 INFO L226 Difference]: Without dead ends: 23 [2021-10-20 05:18:19,000 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 19.8ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-10-20 05:18:19,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-10-20 05:18:19,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2021-10-20 05:18:19,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.0) internal successors, (22), 22 states have internal predecessors, (22), 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) [2021-10-20 05:18:19,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 22 transitions. [2021-10-20 05:18:19,001 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 22 transitions. Word has length 22 [2021-10-20 05:18:19,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 05:18:19,002 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 22 transitions. [2021-10-20 05:18:19,002 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 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) [2021-10-20 05:18:19,002 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 22 transitions. [2021-10-20 05:18:19,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-20 05:18:19,002 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 05:18:19,003 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-20 05:18:19,003 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-10-20 05:18:19,003 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 14 more)] === [2021-10-20 05:18:19,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 05:18:19,004 INFO L82 PathProgramCache]: Analyzing trace with hash -829278152, now seen corresponding path program 1 times [2021-10-20 05:18:19,004 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-20 05:18:19,004 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756490329] [2021-10-20 05:18:19,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 05:18:19,004 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-20 05:18:19,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 05:18:19,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:18:19,050 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-20 05:18:19,050 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756490329] [2021-10-20 05:18:19,050 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756490329] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-20 05:18:19,050 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-20 05:18:19,051 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-20 05:18:19,051 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509132213] [2021-10-20 05:18:19,051 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-20 05:18:19,051 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-20 05:18:19,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-20 05:18:19,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-20 05:18:19,052 INFO L87 Difference]: Start difference. First operand 23 states and 22 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 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) [2021-10-20 05:18:19,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 05:18:19,063 INFO L93 Difference]: Finished difference Result 21 states and 20 transitions. [2021-10-20 05:18:19,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-20 05:18:19,063 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-20 05:18:19,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 05:18:19,064 INFO L225 Difference]: With dead ends: 21 [2021-10-20 05:18:19,064 INFO L226 Difference]: Without dead ends: 0 [2021-10-20 05:18:19,065 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.9ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-20 05:18:19,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-20 05:18:19,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-20 05:18:19,066 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) [2021-10-20 05:18:19,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-20 05:18:19,066 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 22 [2021-10-20 05:18:19,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 05:18:19,066 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-20 05:18:19,066 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 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) [2021-10-20 05:18:19,067 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-20 05:18:19,067 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-20 05:18:19,069 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK [2021-10-20 05:18:19,070 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK [2021-10-20 05:18:19,070 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK [2021-10-20 05:18:19,070 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK [2021-10-20 05:18:19,071 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK [2021-10-20 05:18:19,071 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK [2021-10-20 05:18:19,071 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK [2021-10-20 05:18:19,071 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK [2021-10-20 05:18:19,071 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK [2021-10-20 05:18:19,072 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK [2021-10-20 05:18:19,073 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK [2021-10-20 05:18:19,073 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK [2021-10-20 05:18:19,073 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK [2021-10-20 05:18:19,073 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK [2021-10-20 05:18:19,073 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK [2021-10-20 05:18:19,074 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK [2021-10-20 05:18:19,074 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK [2021-10-20 05:18:19,074 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-10-20 05:18:19,079 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-20 05:18:19,082 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 05:18:19 BoogieIcfgContainer [2021-10-20 05:18:19,082 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-20 05:18:19,083 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-20 05:18:19,083 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-20 05:18:19,083 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-20 05:18:19,084 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 05:18:16" (3/4) ... [2021-10-20 05:18:19,087 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-20 05:18:19,118 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 97 nodes and edges [2021-10-20 05:18:19,119 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2021-10-20 05:18:19,121 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-10-20 05:18:19,122 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-20 05:18:19,264 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389452d5-f8c3-4265-b109-2fa8cb794c7e/bin/utaipan-tZwUujhuQw/witness.graphml [2021-10-20 05:18:19,264 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-20 05:18:19,266 INFO L168 Benchmark]: Toolchain (without parser) took 4517.92 ms. Allocated memory was 125.8 MB in the beginning and 159.4 MB in the end (delta: 33.6 MB). Free memory was 93.8 MB in the beginning and 128.7 MB in the end (delta: -34.9 MB). Peak memory consumption was 70.1 MB. Max. memory is 16.1 GB. [2021-10-20 05:18:19,266 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 79.7 MB. Free memory is still 37.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-20 05:18:19,267 INFO L168 Benchmark]: CACSL2BoogieTranslator took 383.48 ms. Allocated memory is still 125.8 MB. Free memory was 93.4 MB in the beginning and 97.9 MB in the end (delta: -4.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-20 05:18:19,268 INFO L168 Benchmark]: Boogie Procedure Inliner took 78.31 ms. Allocated memory is still 125.8 MB. Free memory was 97.9 MB in the beginning and 94.2 MB in the end (delta: 3.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-20 05:18:19,268 INFO L168 Benchmark]: Boogie Preprocessor took 49.51 ms. Allocated memory is still 125.8 MB. Free memory was 94.2 MB in the beginning and 92.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-20 05:18:19,268 INFO L168 Benchmark]: RCFGBuilder took 1680.28 ms. Allocated memory is still 125.8 MB. Free memory was 91.7 MB in the beginning and 76.0 MB in the end (delta: 15.7 MB). Peak memory consumption was 48.9 MB. Max. memory is 16.1 GB. [2021-10-20 05:18:19,269 INFO L168 Benchmark]: TraceAbstraction took 2133.42 ms. Allocated memory was 125.8 MB in the beginning and 159.4 MB in the end (delta: 33.6 MB). Free memory was 75.3 MB in the beginning and 69.8 MB in the end (delta: 5.5 MB). Peak memory consumption was 38.9 MB. Max. memory is 16.1 GB. [2021-10-20 05:18:19,269 INFO L168 Benchmark]: Witness Printer took 181.27 ms. Allocated memory is still 159.4 MB. Free memory was 69.8 MB in the beginning and 128.7 MB in the end (delta: -58.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-20 05:18:19,271 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 79.7 MB. Free memory is still 37.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 383.48 ms. Allocated memory is still 125.8 MB. Free memory was 93.4 MB in the beginning and 97.9 MB in the end (delta: -4.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 78.31 ms. Allocated memory is still 125.8 MB. Free memory was 97.9 MB in the beginning and 94.2 MB in the end (delta: 3.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 49.51 ms. Allocated memory is still 125.8 MB. Free memory was 94.2 MB in the beginning and 92.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1680.28 ms. Allocated memory is still 125.8 MB. Free memory was 91.7 MB in the beginning and 76.0 MB in the end (delta: 15.7 MB). Peak memory consumption was 48.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2133.42 ms. Allocated memory was 125.8 MB in the beginning and 159.4 MB in the end (delta: 33.6 MB). Free memory was 75.3 MB in the beginning and 69.8 MB in the end (delta: 5.5 MB). Peak memory consumption was 38.9 MB. Max. memory is 16.1 GB. * Witness Printer took 181.27 ms. Allocated memory is still 159.4 MB. Free memory was 69.8 MB in the beginning and 128.7 MB in the end (delta: -58.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 581]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 581]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 581]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 581]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 581]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 581]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 581]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 581]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 581]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 581]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 581]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 581]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 581]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 581]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 581]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 581]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 288]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 100 locations, 17 error locations. Started 1 CEGAR loops. OverallTime: 2059.6ms, OverallIterations: 14, TraceHistogramMax: 1, EmptinessCheckTime: 25.6ms, AutomataDifference: 751.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 16.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 1154 SDtfs, 1132 SDslu, 495 SDs, 0 SdLazy, 482 SolverSat, 67 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 383.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 56 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 126.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=100occurred in iteration=0, InterpolantAutomatonStates: 55, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 107.1ms AutomataMinimizationTime, 14 MinimizatonAttempts, 113 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 84.5ms SsaConstructionTime, 261.6ms SatisfiabilityAnalysisTime, 524.2ms InterpolantComputationTime, 208 NumberOfCodeBlocks, 208 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 194 ConstructedInterpolants, 0 QuantifiedInterpolants, 509 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 14 InterpolantComputations, 14 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 17 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-10-20 05:18:19,323 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389452d5-f8c3-4265-b109-2fa8cb794c7e/bin/utaipan-tZwUujhuQw/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...