./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-wmm/safe031_tso.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfc2a930-f755-4603-8949-793b44ff3626/bin/utaipan-6cKwYrpEi9/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfc2a930-f755-4603-8949-793b44ff3626/bin/utaipan-6cKwYrpEi9/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfc2a930-f755-4603-8949-793b44ff3626/bin/utaipan-6cKwYrpEi9/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfc2a930-f755-4603-8949-793b44ff3626/bin/utaipan-6cKwYrpEi9/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-wmm/safe031_tso.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfc2a930-f755-4603-8949-793b44ff3626/bin/utaipan-6cKwYrpEi9/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfc2a930-f755-4603-8949-793b44ff3626/bin/utaipan-6cKwYrpEi9 --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 26b6897a83c9df9076ea7ea4c612ce46453382fa627c0d6af54da2d169befd96 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 20:10:11,430 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 20:10:11,433 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 20:10:11,472 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 20:10:11,473 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 20:10:11,474 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 20:10:11,477 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 20:10:11,482 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 20:10:11,485 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 20:10:11,488 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 20:10:11,490 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 20:10:11,493 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 20:10:11,494 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 20:10:11,499 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 20:10:11,500 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 20:10:11,501 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 20:10:11,502 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 20:10:11,503 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 20:10:11,505 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 20:10:11,507 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 20:10:11,509 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 20:10:11,510 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 20:10:11,512 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 20:10:11,513 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 20:10:11,517 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 20:10:11,517 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 20:10:11,517 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 20:10:11,518 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 20:10:11,519 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 20:10:11,520 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 20:10:11,521 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 20:10:11,522 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 20:10:11,523 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 20:10:11,524 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 20:10:11,525 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 20:10:11,525 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 20:10:11,526 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 20:10:11,526 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 20:10:11,527 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 20:10:11,528 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 20:10:11,529 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 20:10:11,530 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfc2a930-f755-4603-8949-793b44ff3626/bin/utaipan-6cKwYrpEi9/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2022-11-20 20:10:11,564 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 20:10:11,564 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 20:10:11,565 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 20:10:11,565 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 20:10:11,566 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 20:10:11,567 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 20:10:11,567 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-20 20:10:11,567 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-20 20:10:11,567 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-20 20:10:11,568 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-20 20:10:11,569 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-20 20:10:11,569 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-20 20:10:11,569 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-20 20:10:11,570 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-20 20:10:11,570 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-20 20:10:11,570 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-20 20:10:11,570 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-20 20:10:11,571 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-20 20:10:11,571 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 20:10:11,572 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 20:10:11,572 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 20:10:11,572 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 20:10:11,572 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 20:10:11,573 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 20:10:11,573 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 20:10:11,574 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 20:10:11,574 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-20 20:10:11,574 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-20 20:10:11,574 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-20 20:10:11,575 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 20:10:11,575 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-20 20:10:11,575 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 20:10:11,575 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 20:10:11,576 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 20:10:11,576 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 20:10:11,576 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 20:10:11,576 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 20:10:11,577 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-20 20:10:11,577 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 20:10:11,577 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-20 20:10:11,577 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 20:10:11,578 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-20 20:10:11,578 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfc2a930-f755-4603-8949-793b44ff3626/bin/utaipan-6cKwYrpEi9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfc2a930-f755-4603-8949-793b44ff3626/bin/utaipan-6cKwYrpEi9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 26b6897a83c9df9076ea7ea4c612ce46453382fa627c0d6af54da2d169befd96 [2022-11-20 20:10:11,881 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 20:10:11,918 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 20:10:11,920 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 20:10:11,923 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 20:10:11,923 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 20:10:11,925 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfc2a930-f755-4603-8949-793b44ff3626/bin/utaipan-6cKwYrpEi9/../../sv-benchmarks/c/pthread-wmm/safe031_tso.i [2022-11-20 20:10:14,981 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 20:10:15,277 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 20:10:15,278 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfc2a930-f755-4603-8949-793b44ff3626/sv-benchmarks/c/pthread-wmm/safe031_tso.i [2022-11-20 20:10:15,292 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfc2a930-f755-4603-8949-793b44ff3626/bin/utaipan-6cKwYrpEi9/data/12d5149bf/25a1e6a860df42d18ad67c3194648a79/FLAG1c82a1faa [2022-11-20 20:10:15,309 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfc2a930-f755-4603-8949-793b44ff3626/bin/utaipan-6cKwYrpEi9/data/12d5149bf/25a1e6a860df42d18ad67c3194648a79 [2022-11-20 20:10:15,312 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 20:10:15,317 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 20:10:15,321 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 20:10:15,322 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 20:10:15,326 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 20:10:15,327 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 08:10:15" (1/1) ... [2022-11-20 20:10:15,328 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20aaa2f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:10:15, skipping insertion in model container [2022-11-20 20:10:15,328 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 08:10:15" (1/1) ... [2022-11-20 20:10:15,337 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 20:10:15,375 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 20:10:15,573 WARN L237 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_cfc2a930-f755-4603-8949-793b44ff3626/sv-benchmarks/c/pthread-wmm/safe031_tso.i[945,958] [2022-11-20 20:10:15,833 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 20:10:15,845 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 20:10:15,861 WARN L237 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_cfc2a930-f755-4603-8949-793b44ff3626/sv-benchmarks/c/pthread-wmm/safe031_tso.i[945,958] [2022-11-20 20:10:15,914 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 20:10:15,957 INFO L208 MainTranslator]: Completed translation [2022-11-20 20:10:15,958 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:10:15 WrapperNode [2022-11-20 20:10:15,958 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 20:10:15,960 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 20:10:15,960 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 20:10:15,960 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 20:10:15,969 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:10:15" (1/1) ... [2022-11-20 20:10:16,003 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:10:15" (1/1) ... [2022-11-20 20:10:16,033 INFO L138 Inliner]: procedures = 176, calls = 55, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 70 [2022-11-20 20:10:16,033 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 20:10:16,034 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 20:10:16,034 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 20:10:16,034 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 20:10:16,044 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:10:15" (1/1) ... [2022-11-20 20:10:16,046 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:10:15" (1/1) ... [2022-11-20 20:10:16,059 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:10:15" (1/1) ... [2022-11-20 20:10:16,068 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:10:15" (1/1) ... [2022-11-20 20:10:16,072 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:10:15" (1/1) ... [2022-11-20 20:10:16,074 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:10:15" (1/1) ... [2022-11-20 20:10:16,076 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:10:15" (1/1) ... [2022-11-20 20:10:16,078 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:10:15" (1/1) ... [2022-11-20 20:10:16,092 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 20:10:16,094 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 20:10:16,101 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 20:10:16,101 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 20:10:16,102 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:10:15" (1/1) ... [2022-11-20 20:10:16,108 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 20:10:16,121 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfc2a930-f755-4603-8949-793b44ff3626/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:10:16,135 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfc2a930-f755-4603-8949-793b44ff3626/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 20:10:16,139 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfc2a930-f755-4603-8949-793b44ff3626/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 20:10:16,173 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 20:10:16,173 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-20 20:10:16,173 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 20:10:16,174 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 20:10:16,174 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 20:10:16,174 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-11-20 20:10:16,174 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-11-20 20:10:16,174 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-11-20 20:10:16,175 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-11-20 20:10:16,175 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-11-20 20:10:16,175 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-11-20 20:10:16,175 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 20:10:16,175 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-20 20:10:16,176 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 20:10:16,176 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 20:10:16,177 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-20 20:10:16,303 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 20:10:16,305 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 20:10:16,481 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 20:10:16,507 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 20:10:16,507 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-20 20:10:16,510 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:10:16 BoogieIcfgContainer [2022-11-20 20:10:16,510 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 20:10:16,512 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 20:10:16,513 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 20:10:16,516 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 20:10:16,516 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 08:10:15" (1/3) ... [2022-11-20 20:10:16,517 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ee65f39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 08:10:16, skipping insertion in model container [2022-11-20 20:10:16,517 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:10:15" (2/3) ... [2022-11-20 20:10:16,517 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ee65f39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 08:10:16, skipping insertion in model container [2022-11-20 20:10:16,518 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:10:16" (3/3) ... [2022-11-20 20:10:16,519 INFO L112 eAbstractionObserver]: Analyzing ICFG safe031_tso.i [2022-11-20 20:10:16,537 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 20:10:16,537 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-11-20 20:10:16,537 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 20:10:16,682 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-20 20:10:16,742 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-20 20:10:16,762 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 109 places, 101 transitions, 217 flow [2022-11-20 20:10:16,771 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 109 places, 101 transitions, 217 flow [2022-11-20 20:10:16,773 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 109 places, 101 transitions, 217 flow [2022-11-20 20:10:16,888 INFO L130 PetriNetUnfolder]: 2/98 cut-off events. [2022-11-20 20:10:16,890 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 20:10:16,896 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108 conditions, 98 events. 2/98 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 63 event pairs, 0 based on Foata normal form. 0/88 useless extension candidates. Maximal degree in co-relation 75. Up to 2 conditions per place. [2022-11-20 20:10:16,900 INFO L119 LiptonReduction]: Number of co-enabled transitions 1800 [2022-11-20 20:10:20,556 INFO L134 LiptonReduction]: Checked pairs total: 3364 [2022-11-20 20:10:20,557 INFO L136 LiptonReduction]: Total number of compositions: 105 [2022-11-20 20:10:20,568 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 38 places, 28 transitions, 71 flow [2022-11-20 20:10:20,625 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 340 states, 332 states have (on average 2.891566265060241) internal successors, (960), 339 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:10:20,644 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 20:10:20,650 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@47f728fd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 20:10:20,651 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2022-11-20 20:10:20,654 INFO L276 IsEmpty]: Start isEmpty. Operand has 340 states, 332 states have (on average 2.891566265060241) internal successors, (960), 339 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:10:20,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2022-11-20 20:10:20,659 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:10:20,660 INFO L195 NwaCegarLoop]: trace histogram [1] [2022-11-20 20:10:20,660 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-11-20 20:10:20,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:10:20,666 INFO L85 PathProgramCache]: Analyzing trace with hash 361, now seen corresponding path program 1 times [2022-11-20 20:10:20,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:10:20,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572220593] [2022-11-20 20:10:20,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:10:20,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:10:20,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:10:20,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:10:20,773 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:10:20,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572220593] [2022-11-20 20:10:20,774 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572220593] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:10:20,774 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:10:20,775 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-11-20 20:10:20,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734148792] [2022-11-20 20:10:20,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:10:20,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-20 20:10:20,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:10:20,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-20 20:10:20,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 20:10:20,808 INFO L87 Difference]: Start difference. First operand has 340 states, 332 states have (on average 2.891566265060241) internal successors, (960), 339 states have internal predecessors, (960), 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 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:10:20,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:10:20,861 INFO L93 Difference]: Finished difference Result 298 states and 864 transitions. [2022-11-20 20:10:20,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-20 20:10:20,863 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 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 1 [2022-11-20 20:10:20,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:10:20,877 INFO L225 Difference]: With dead ends: 298 [2022-11-20 20:10:20,877 INFO L226 Difference]: Without dead ends: 298 [2022-11-20 20:10:20,878 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 20:10:20,881 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 20:10:20,882 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 20:10:20,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2022-11-20 20:10:20,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2022-11-20 20:10:20,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 296 states have (on average 2.918918918918919) internal successors, (864), 297 states have internal predecessors, (864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:10:20,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2022-11-20 20:10:20,943 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 1 [2022-11-20 20:10:20,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:10:20,944 INFO L495 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2022-11-20 20:10:20,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:10:20,944 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2022-11-20 20:10:20,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-20 20:10:20,945 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:10:20,946 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:10:20,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 20:10:20,946 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-11-20 20:10:20,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:10:20,947 INFO L85 PathProgramCache]: Analyzing trace with hash 1244671120, now seen corresponding path program 1 times [2022-11-20 20:10:20,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:10:20,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69707406] [2022-11-20 20:10:20,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:10:20,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:10:21,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:10:21,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:10:21,558 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:10:21,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69707406] [2022-11-20 20:10:21,559 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69707406] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:10:21,560 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:10:21,560 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 20:10:21,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509005033] [2022-11-20 20:10:21,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:10:21,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 20:10:21,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:10:21,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 20:10:21,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 20:10:21,570 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:10:21,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:10:21,663 INFO L93 Difference]: Finished difference Result 234 states and 656 transitions. [2022-11-20 20:10:21,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 20:10:21,664 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-20 20:10:21,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:10:21,666 INFO L225 Difference]: With dead ends: 234 [2022-11-20 20:10:21,667 INFO L226 Difference]: Without dead ends: 234 [2022-11-20 20:10:21,667 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 20:10:21,668 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 19 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 20:10:21,669 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 18 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 20:10:21,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2022-11-20 20:10:21,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 234. [2022-11-20 20:10:21,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 233 states have (on average 2.815450643776824) internal successors, (656), 233 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:10:21,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 656 transitions. [2022-11-20 20:10:21,704 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 656 transitions. Word has length 8 [2022-11-20 20:10:21,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:10:21,705 INFO L495 AbstractCegarLoop]: Abstraction has 234 states and 656 transitions. [2022-11-20 20:10:21,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:10:21,706 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 656 transitions. [2022-11-20 20:10:21,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-20 20:10:21,707 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:10:21,707 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:10:21,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 20:10:21,708 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-11-20 20:10:21,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:10:21,710 INFO L85 PathProgramCache]: Analyzing trace with hash 1244671118, now seen corresponding path program 1 times [2022-11-20 20:10:21,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:10:21,710 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757149376] [2022-11-20 20:10:21,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:10:21,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:10:21,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:10:21,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:10:21,895 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:10:21,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757149376] [2022-11-20 20:10:21,896 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757149376] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:10:21,896 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:10:21,896 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 20:10:21,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11940832] [2022-11-20 20:10:21,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:10:21,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:10:21,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:10:21,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:10:21,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:10:21,898 INFO L87 Difference]: Start difference. First operand 234 states and 656 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:10:21,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:10:21,941 INFO L93 Difference]: Finished difference Result 356 states and 928 transitions. [2022-11-20 20:10:21,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:10:21,943 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-20 20:10:21,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:10:21,945 INFO L225 Difference]: With dead ends: 356 [2022-11-20 20:10:21,946 INFO L226 Difference]: Without dead ends: 316 [2022-11-20 20:10:21,946 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:10:21,947 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 4 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 20:10:21,948 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 5 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 20:10:21,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2022-11-20 20:10:21,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 278. [2022-11-20 20:10:21,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 277 states have (on average 2.6389891696750905) internal successors, (731), 277 states have internal predecessors, (731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:10:21,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 731 transitions. [2022-11-20 20:10:21,983 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 731 transitions. Word has length 8 [2022-11-20 20:10:21,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:10:21,984 INFO L495 AbstractCegarLoop]: Abstraction has 278 states and 731 transitions. [2022-11-20 20:10:21,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:10:21,984 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 731 transitions. [2022-11-20 20:10:21,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-20 20:10:21,986 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:10:21,987 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:10:21,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 20:10:21,987 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-11-20 20:10:21,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:10:21,989 INFO L85 PathProgramCache]: Analyzing trace with hash -115440261, now seen corresponding path program 1 times [2022-11-20 20:10:21,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:10:21,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106523664] [2022-11-20 20:10:21,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:10:21,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:10:22,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:10:22,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:10:22,180 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:10:22,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106523664] [2022-11-20 20:10:22,184 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106523664] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:10:22,186 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:10:22,186 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 20:10:22,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166077118] [2022-11-20 20:10:22,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:10:22,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 20:10:22,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:10:22,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 20:10:22,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 20:10:22,190 INFO L87 Difference]: Start difference. First operand 278 states and 731 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:10:22,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:10:22,253 INFO L93 Difference]: Finished difference Result 304 states and 773 transitions. [2022-11-20 20:10:22,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 20:10:22,253 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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 9 [2022-11-20 20:10:22,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:10:22,256 INFO L225 Difference]: With dead ends: 304 [2022-11-20 20:10:22,256 INFO L226 Difference]: Without dead ends: 304 [2022-11-20 20:10:22,257 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 20:10:22,260 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 14 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 20:10:22,261 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 8 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 20:10:22,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2022-11-20 20:10:22,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 272. [2022-11-20 20:10:22,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 271 states have (on average 2.6162361623616235) internal successors, (709), 271 states have internal predecessors, (709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:10:22,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 709 transitions. [2022-11-20 20:10:22,299 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 709 transitions. Word has length 9 [2022-11-20 20:10:22,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:10:22,301 INFO L495 AbstractCegarLoop]: Abstraction has 272 states and 709 transitions. [2022-11-20 20:10:22,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:10:22,301 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 709 transitions. [2022-11-20 20:10:22,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-20 20:10:22,303 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:10:22,303 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:10:22,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 20:10:22,304 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-11-20 20:10:22,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:10:22,305 INFO L85 PathProgramCache]: Analyzing trace with hash -69902656, now seen corresponding path program 1 times [2022-11-20 20:10:22,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:10:22,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286220654] [2022-11-20 20:10:22,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:10:22,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:10:22,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:10:22,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:10:22,419 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:10:22,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286220654] [2022-11-20 20:10:22,419 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286220654] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:10:22,422 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:10:22,422 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 20:10:22,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123224005] [2022-11-20 20:10:22,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:10:22,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:10:22,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:10:22,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:10:22,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:10:22,424 INFO L87 Difference]: Start difference. First operand 272 states and 709 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:10:22,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:10:22,467 INFO L93 Difference]: Finished difference Result 260 states and 676 transitions. [2022-11-20 20:10:22,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:10:22,467 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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 9 [2022-11-20 20:10:22,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:10:22,470 INFO L225 Difference]: With dead ends: 260 [2022-11-20 20:10:22,471 INFO L226 Difference]: Without dead ends: 260 [2022-11-20 20:10:22,472 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:10:22,473 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 3 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 20:10:22,474 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 5 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 20:10:22,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2022-11-20 20:10:22,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 256. [2022-11-20 20:10:22,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 255 states have (on average 2.603921568627451) internal successors, (664), 255 states have internal predecessors, (664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:10:22,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 664 transitions. [2022-11-20 20:10:22,484 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 664 transitions. Word has length 9 [2022-11-20 20:10:22,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:10:22,485 INFO L495 AbstractCegarLoop]: Abstraction has 256 states and 664 transitions. [2022-11-20 20:10:22,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:10:22,486 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 664 transitions. [2022-11-20 20:10:22,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-20 20:10:22,492 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:10:22,493 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:10:22,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 20:10:22,493 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-11-20 20:10:22,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:10:22,494 INFO L85 PathProgramCache]: Analyzing trace with hash 716317555, now seen corresponding path program 1 times [2022-11-20 20:10:22,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:10:22,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112015077] [2022-11-20 20:10:22,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:10:22,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:10:22,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:10:22,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:10:22,642 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:10:22,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112015077] [2022-11-20 20:10:22,642 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112015077] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:10:22,642 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:10:22,643 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 20:10:22,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944911378] [2022-11-20 20:10:22,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:10:22,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 20:10:22,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:10:22,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 20:10:22,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 20:10:22,644 INFO L87 Difference]: Start difference. First operand 256 states and 664 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:10:22,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:10:22,708 INFO L93 Difference]: Finished difference Result 289 states and 680 transitions. [2022-11-20 20:10:22,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 20:10:22,710 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-20 20:10:22,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:10:22,711 INFO L225 Difference]: With dead ends: 289 [2022-11-20 20:10:22,712 INFO L226 Difference]: Without dead ends: 209 [2022-11-20 20:10:22,712 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 20:10:22,714 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 22 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 20:10:22,715 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 15 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 20:10:22,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2022-11-20 20:10:22,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 209. [2022-11-20 20:10:22,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 208 states have (on average 2.3125) internal successors, (481), 208 states have internal predecessors, (481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:10:22,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 481 transitions. [2022-11-20 20:10:22,723 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 481 transitions. Word has length 10 [2022-11-20 20:10:22,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:10:22,723 INFO L495 AbstractCegarLoop]: Abstraction has 209 states and 481 transitions. [2022-11-20 20:10:22,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:10:22,723 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 481 transitions. [2022-11-20 20:10:22,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-20 20:10:22,725 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:10:22,725 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:10:22,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 20:10:22,726 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-11-20 20:10:22,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:10:22,726 INFO L85 PathProgramCache]: Analyzing trace with hash -886068572, now seen corresponding path program 1 times [2022-11-20 20:10:22,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:10:22,726 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744143181] [2022-11-20 20:10:22,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:10:22,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:10:22,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:10:22,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:10:22,872 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:10:22,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744143181] [2022-11-20 20:10:22,872 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744143181] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:10:22,872 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:10:22,872 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 20:10:22,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851671467] [2022-11-20 20:10:22,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:10:22,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 20:10:22,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:10:22,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 20:10:22,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 20:10:22,874 INFO L87 Difference]: Start difference. First operand 209 states and 481 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:10:22,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:10:22,936 INFO L93 Difference]: Finished difference Result 276 states and 600 transitions. [2022-11-20 20:10:22,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 20:10:22,937 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-20 20:10:22,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:10:22,938 INFO L225 Difference]: With dead ends: 276 [2022-11-20 20:10:22,939 INFO L226 Difference]: Without dead ends: 224 [2022-11-20 20:10:22,939 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 20:10:22,940 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 18 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 20:10:22,940 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 6 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 20:10:22,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2022-11-20 20:10:22,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 180. [2022-11-20 20:10:22,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 179 states have (on average 2.2402234636871508) internal successors, (401), 179 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:10:22,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 401 transitions. [2022-11-20 20:10:22,947 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 401 transitions. Word has length 12 [2022-11-20 20:10:22,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:10:22,948 INFO L495 AbstractCegarLoop]: Abstraction has 180 states and 401 transitions. [2022-11-20 20:10:22,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:10:22,948 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 401 transitions. [2022-11-20 20:10:22,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-20 20:10:22,949 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:10:22,949 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:10:22,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 20:10:22,953 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-11-20 20:10:22,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:10:22,954 INFO L85 PathProgramCache]: Analyzing trace with hash -1631952070, now seen corresponding path program 1 times [2022-11-20 20:10:22,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:10:22,954 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481950737] [2022-11-20 20:10:22,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:10:22,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:10:22,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:10:23,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:10:23,108 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:10:23,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481950737] [2022-11-20 20:10:23,108 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481950737] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:10:23,108 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:10:23,109 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 20:10:23,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269778175] [2022-11-20 20:10:23,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:10:23,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 20:10:23,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:10:23,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 20:10:23,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-20 20:10:23,110 INFO L87 Difference]: Start difference. First operand 180 states and 401 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:10:23,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:10:23,189 INFO L93 Difference]: Finished difference Result 175 states and 361 transitions. [2022-11-20 20:10:23,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 20:10:23,190 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-20 20:10:23,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:10:23,191 INFO L225 Difference]: With dead ends: 175 [2022-11-20 20:10:23,191 INFO L226 Difference]: Without dead ends: 129 [2022-11-20 20:10:23,191 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-20 20:10:23,192 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 34 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 20:10:23,192 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 19 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 20:10:23,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2022-11-20 20:10:23,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 125. [2022-11-20 20:10:23,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 124 states have (on average 2.032258064516129) internal successors, (252), 124 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:10:23,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 252 transitions. [2022-11-20 20:10:23,197 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 252 transitions. Word has length 12 [2022-11-20 20:10:23,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:10:23,198 INFO L495 AbstractCegarLoop]: Abstraction has 125 states and 252 transitions. [2022-11-20 20:10:23,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:10:23,198 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 252 transitions. [2022-11-20 20:10:23,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-20 20:10:23,199 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:10:23,199 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:10:23,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 20:10:23,199 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-11-20 20:10:23,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:10:23,200 INFO L85 PathProgramCache]: Analyzing trace with hash 1866971365, now seen corresponding path program 1 times [2022-11-20 20:10:23,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:10:23,200 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288326143] [2022-11-20 20:10:23,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:10:23,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:10:23,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:10:23,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:10:23,279 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:10:23,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288326143] [2022-11-20 20:10:23,279 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288326143] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:10:23,279 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:10:23,279 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 20:10:23,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167606603] [2022-11-20 20:10:23,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:10:23,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:10:23,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:10:23,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:10:23,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:10:23,281 INFO L87 Difference]: Start difference. First operand 125 states and 252 transitions. Second operand has 3 states, 2 states have (on average 7.0) 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) [2022-11-20 20:10:23,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:10:23,314 INFO L93 Difference]: Finished difference Result 153 states and 295 transitions. [2022-11-20 20:10:23,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:10:23,314 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.0) 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 [2022-11-20 20:10:23,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:10:23,315 INFO L225 Difference]: With dead ends: 153 [2022-11-20 20:10:23,315 INFO L226 Difference]: Without dead ends: 120 [2022-11-20 20:10:23,316 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:10:23,316 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 2 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 20:10:23,317 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 6 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 20:10:23,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2022-11-20 20:10:23,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 118. [2022-11-20 20:10:23,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 117 states have (on average 1.9914529914529915) internal successors, (233), 117 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:10:23,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 233 transitions. [2022-11-20 20:10:23,321 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 233 transitions. Word has length 14 [2022-11-20 20:10:23,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:10:23,322 INFO L495 AbstractCegarLoop]: Abstraction has 118 states and 233 transitions. [2022-11-20 20:10:23,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.0) 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) [2022-11-20 20:10:23,322 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 233 transitions. [2022-11-20 20:10:23,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-20 20:10:23,323 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:10:23,323 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:10:23,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-20 20:10:23,323 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-11-20 20:10:23,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:10:23,324 INFO L85 PathProgramCache]: Analyzing trace with hash 1891140953, now seen corresponding path program 2 times [2022-11-20 20:10:23,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:10:23,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647022355] [2022-11-20 20:10:23,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:10:23,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:10:23,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:10:23,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:10:23,433 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:10:23,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647022355] [2022-11-20 20:10:23,434 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647022355] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:10:23,434 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:10:23,434 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 20:10:23,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349375944] [2022-11-20 20:10:23,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:10:23,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 20:10:23,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:10:23,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 20:10:23,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-20 20:10:23,436 INFO L87 Difference]: Start difference. First operand 118 states and 233 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 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) [2022-11-20 20:10:23,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:10:23,512 INFO L93 Difference]: Finished difference Result 112 states and 219 transitions. [2022-11-20 20:10:23,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 20:10:23,512 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 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 [2022-11-20 20:10:23,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:10:23,513 INFO L225 Difference]: With dead ends: 112 [2022-11-20 20:10:23,513 INFO L226 Difference]: Without dead ends: 36 [2022-11-20 20:10:23,513 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-11-20 20:10:23,514 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 37 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 20:10:23,514 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 12 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 20:10:23,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-11-20 20:10:23,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2022-11-20 20:10:23,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.6) internal successors, (56), 35 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:10:23,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 56 transitions. [2022-11-20 20:10:23,517 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 56 transitions. Word has length 14 [2022-11-20 20:10:23,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:10:23,517 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 56 transitions. [2022-11-20 20:10:23,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 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) [2022-11-20 20:10:23,517 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 56 transitions. [2022-11-20 20:10:23,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-20 20:10:23,518 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:10:23,518 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:10:23,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-20 20:10:23,519 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-11-20 20:10:23,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:10:23,519 INFO L85 PathProgramCache]: Analyzing trace with hash -1433587248, now seen corresponding path program 1 times [2022-11-20 20:10:23,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:10:23,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513922119] [2022-11-20 20:10:23,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:10:23,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:10:23,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:10:23,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:10:23,622 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:10:23,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513922119] [2022-11-20 20:10:23,623 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513922119] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:10:23,623 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:10:23,623 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 20:10:23,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893244290] [2022-11-20 20:10:23,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:10:23,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 20:10:23,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:10:23,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 20:10:23,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 20:10:23,625 INFO L87 Difference]: Start difference. First operand 36 states and 56 transitions. Second operand has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 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) [2022-11-20 20:10:23,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:10:23,662 INFO L93 Difference]: Finished difference Result 35 states and 55 transitions. [2022-11-20 20:10:23,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 20:10:23,663 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 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 [2022-11-20 20:10:23,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:10:23,663 INFO L225 Difference]: With dead ends: 35 [2022-11-20 20:10:23,663 INFO L226 Difference]: Without dead ends: 0 [2022-11-20 20:10:23,664 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 20:10:23,664 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 12 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 20:10:23,665 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 20:10:23,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-20 20:10:23,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-20 20:10:23,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:10:23,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-20 20:10:23,666 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2022-11-20 20:10:23,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:10:23,666 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-20 20:10:23,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 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) [2022-11-20 20:10:23,667 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-20 20:10:23,667 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-20 20:10:23,669 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 11 remaining) [2022-11-20 20:10:23,670 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 11 remaining) [2022-11-20 20:10:23,670 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 11 remaining) [2022-11-20 20:10:23,671 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 11 remaining) [2022-11-20 20:10:23,671 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 11 remaining) [2022-11-20 20:10:23,671 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 11 remaining) [2022-11-20 20:10:23,671 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK (4 of 11 remaining) [2022-11-20 20:10:23,671 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK (3 of 11 remaining) [2022-11-20 20:10:23,672 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 11 remaining) [2022-11-20 20:10:23,672 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 11 remaining) [2022-11-20 20:10:23,672 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 11 remaining) [2022-11-20 20:10:23,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-20 20:10:23,675 INFO L444 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:10:23,678 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-20 20:10:23,678 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-20 20:10:23,680 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 08:10:23 BasicIcfg [2022-11-20 20:10:23,681 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-20 20:10:23,681 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 20:10:23,681 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 20:10:23,682 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 20:10:23,682 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:10:16" (3/4) ... [2022-11-20 20:10:23,696 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-20 20:10:23,703 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2022-11-20 20:10:23,703 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2022-11-20 20:10:23,703 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2022-11-20 20:10:23,708 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2022-11-20 20:10:23,708 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-20 20:10:23,708 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-11-20 20:10:23,708 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-20 20:10:23,741 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfc2a930-f755-4603-8949-793b44ff3626/bin/utaipan-6cKwYrpEi9/witness.graphml [2022-11-20 20:10:23,741 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 20:10:23,742 INFO L158 Benchmark]: Toolchain (without parser) took 8424.93ms. Allocated memory was 167.8MB in the beginning and 201.3MB in the end (delta: 33.6MB). Free memory was 129.3MB in the beginning and 167.5MB in the end (delta: -38.2MB). Peak memory consumption was 108.2MB. Max. memory is 16.1GB. [2022-11-20 20:10:23,742 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 136.3MB. Free memory was 101.4MB in the beginning and 101.3MB in the end (delta: 25.8kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 20:10:23,743 INFO L158 Benchmark]: CACSL2BoogieTranslator took 637.56ms. Allocated memory is still 167.8MB. Free memory was 129.3MB in the beginning and 108.4MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2022-11-20 20:10:23,743 INFO L158 Benchmark]: Boogie Procedure Inliner took 73.85ms. Allocated memory is still 167.8MB. Free memory was 108.4MB in the beginning and 106.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 20:10:23,743 INFO L158 Benchmark]: Boogie Preprocessor took 59.24ms. Allocated memory is still 167.8MB. Free memory was 106.3MB in the beginning and 105.1MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 20:10:23,744 INFO L158 Benchmark]: RCFGBuilder took 416.60ms. Allocated memory is still 167.8MB. Free memory was 105.1MB in the beginning and 90.4MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-20 20:10:23,744 INFO L158 Benchmark]: TraceAbstraction took 7168.39ms. Allocated memory was 167.8MB in the beginning and 201.3MB in the end (delta: 33.6MB). Free memory was 90.1MB in the beginning and 57.4MB in the end (delta: 32.7MB). Peak memory consumption was 68.3MB. Max. memory is 16.1GB. [2022-11-20 20:10:23,744 INFO L158 Benchmark]: Witness Printer took 60.19ms. Allocated memory is still 201.3MB. Free memory was 57.4MB in the beginning and 167.5MB in the end (delta: -110.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 20:10:23,746 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 136.3MB. Free memory was 101.4MB in the beginning and 101.3MB in the end (delta: 25.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 637.56ms. Allocated memory is still 167.8MB. Free memory was 129.3MB in the beginning and 108.4MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 73.85ms. Allocated memory is still 167.8MB. Free memory was 108.4MB in the beginning and 106.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 59.24ms. Allocated memory is still 167.8MB. Free memory was 106.3MB in the beginning and 105.1MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 416.60ms. Allocated memory is still 167.8MB. Free memory was 105.1MB in the beginning and 90.4MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 7168.39ms. Allocated memory was 167.8MB in the beginning and 201.3MB in the end (delta: 33.6MB). Free memory was 90.1MB in the beginning and 57.4MB in the end (delta: 32.7MB). Peak memory consumption was 68.3MB. Max. memory is 16.1GB. * Witness Printer took 60.19ms. Allocated memory is still 201.3MB. Free memory was 57.4MB in the beginning and 167.5MB in the end (delta: -110.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.8s, 109 PlacesBefore, 38 PlacesAfterwards, 101 TransitionsBefore, 28 TransitionsAfterwards, 1800 CoEnabledTransitionPairs, 6 FixpointIterations, 33 TrivialSequentialCompositions, 61 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 2 ChoiceCompositions, 105 TotalNumberOfCompositions, 3364 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2076, independent: 1976, independent conditional: 0, independent unconditional: 1976, dependent: 100, dependent conditional: 0, dependent unconditional: 100, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1304, independent: 1262, independent conditional: 0, independent unconditional: 1262, dependent: 42, dependent conditional: 0, dependent unconditional: 42, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1304, independent: 1254, independent conditional: 0, independent unconditional: 1254, dependent: 50, dependent conditional: 0, dependent unconditional: 50, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 50, independent: 8, independent conditional: 0, independent unconditional: 8, dependent: 42, dependent conditional: 0, dependent unconditional: 42, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 188, independent: 32, independent conditional: 0, independent unconditional: 32, dependent: 156, dependent conditional: 0, dependent unconditional: 156, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 2076, independent: 714, independent conditional: 0, independent unconditional: 714, dependent: 58, dependent conditional: 0, dependent unconditional: 58, unknown: 1304, unknown conditional: 0, unknown unconditional: 1304] , Statistics on independence cache: Total cache size (in pairs): 92, Positive cache size: 78, Positive conditional cache size: 0, Positive unconditional cache size: 78, Negative cache size: 14, Negative conditional cache size: 0, Negative unconditional cache size: 14, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 18]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 776]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 124 locations, 11 error locations. Started 1 CEGAR loops. OverallTime: 6.9s, OverallIterations: 11, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 165 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 165 mSDsluCounter, 99 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 51 mSDsCounter, 23 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 465 IncrementalHoareTripleChecker+Invalid, 488 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 23 mSolverCounterUnsat, 48 mSDtfsCounter, 465 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=340occurred in iteration=0, InterpolantAutomatonStates: 47, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 11 MinimizatonAttempts, 124 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 114 NumberOfCodeBlocks, 114 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 103 ConstructedInterpolants, 0 QuantifiedInterpolants, 621 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 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 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-20 20:10:23,770 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfc2a930-f755-4603-8949-793b44ff3626/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE