./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/goblint-regression/36-apron_22-traces-write-centered-vs-meet-mutex_true_no-overflow.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beebb027-ecfd-4d37-a895-6820ad3fcade/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beebb027-ecfd-4d37-a895-6820ad3fcade/bin/utaipan-g80aRyZoba/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beebb027-ecfd-4d37-a895-6820ad3fcade/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beebb027-ecfd-4d37-a895-6820ad3fcade/bin/utaipan-g80aRyZoba/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/goblint-regression/36-apron_22-traces-write-centered-vs-meet-mutex_true_no-overflow.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beebb027-ecfd-4d37-a895-6820ad3fcade/bin/utaipan-g80aRyZoba/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beebb027-ecfd-4d37-a895-6820ad3fcade/bin/utaipan-g80aRyZoba --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 6883737711af32a6a824eca7af237353e2fdaf7712a6b3c22083c0d47b565ee7 --- 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-b5237d8 [2022-11-22 00:11:06,395 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 00:11:06,400 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 00:11:06,425 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 00:11:06,428 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 00:11:06,432 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 00:11:06,434 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 00:11:06,438 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 00:11:06,440 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 00:11:06,446 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 00:11:06,448 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 00:11:06,450 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 00:11:06,450 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 00:11:06,455 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 00:11:06,457 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 00:11:06,460 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 00:11:06,462 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 00:11:06,463 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 00:11:06,464 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 00:11:06,471 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 00:11:06,473 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 00:11:06,475 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 00:11:06,476 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 00:11:06,477 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 00:11:06,487 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 00:11:06,487 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 00:11:06,488 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 00:11:06,490 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 00:11:06,490 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 00:11:06,492 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 00:11:06,493 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 00:11:06,494 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 00:11:06,495 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 00:11:06,496 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 00:11:06,498 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 00:11:06,499 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 00:11:06,499 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 00:11:06,500 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 00:11:06,500 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 00:11:06,502 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 00:11:06,502 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 00:11:06,503 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beebb027-ecfd-4d37-a895-6820ad3fcade/bin/utaipan-g80aRyZoba/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2022-11-22 00:11:06,525 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 00:11:06,525 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 00:11:06,526 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 00:11:06,526 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 00:11:06,527 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 00:11:06,527 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 00:11:06,527 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 00:11:06,527 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 00:11:06,527 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 00:11:06,527 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-22 00:11:06,528 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 00:11:06,528 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 00:11:06,528 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-22 00:11:06,528 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-22 00:11:06,528 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 00:11:06,529 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-22 00:11:06,529 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-22 00:11:06,529 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-22 00:11:06,530 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-22 00:11:06,530 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-22 00:11:06,530 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 00:11:06,530 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-22 00:11:06,530 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-22 00:11:06,530 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-22 00:11:06,531 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-22 00:11:06,531 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 00:11:06,531 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-22 00:11:06,531 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-22 00:11:06,531 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-22 00:11:06,531 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 00:11:06,532 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-22 00:11:06,532 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-22 00:11:06,532 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 00:11:06,532 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 00:11:06,532 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 00:11:06,533 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 00:11:06,533 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 00:11:06,533 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-22 00:11:06,533 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 00:11:06,533 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-22 00:11:06,533 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-22 00:11:06,534 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 00:11:06,534 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_beebb027-ecfd-4d37-a895-6820ad3fcade/bin/utaipan-g80aRyZoba/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beebb027-ecfd-4d37-a895-6820ad3fcade/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6883737711af32a6a824eca7af237353e2fdaf7712a6b3c22083c0d47b565ee7 [2022-11-22 00:11:06,880 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 00:11:06,901 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 00:11:06,904 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 00:11:06,905 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 00:11:06,906 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 00:11:06,907 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beebb027-ecfd-4d37-a895-6820ad3fcade/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/goblint-regression/36-apron_22-traces-write-centered-vs-meet-mutex_true_no-overflow.i [2022-11-22 00:11:09,931 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 00:11:10,217 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 00:11:10,236 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beebb027-ecfd-4d37-a895-6820ad3fcade/sv-benchmarks/c/goblint-regression/36-apron_22-traces-write-centered-vs-meet-mutex_true_no-overflow.i [2022-11-22 00:11:10,262 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beebb027-ecfd-4d37-a895-6820ad3fcade/bin/utaipan-g80aRyZoba/data/8218c5bdd/1e9c964fbae04d4aa25f34d485a1956b/FLAGcbc47a7b0 [2022-11-22 00:11:10,289 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beebb027-ecfd-4d37-a895-6820ad3fcade/bin/utaipan-g80aRyZoba/data/8218c5bdd/1e9c964fbae04d4aa25f34d485a1956b [2022-11-22 00:11:10,292 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 00:11:10,293 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 00:11:10,295 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 00:11:10,295 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 00:11:10,299 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 00:11:10,299 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:11:10" (1/1) ... [2022-11-22 00:11:10,301 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29946c98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:11:10, skipping insertion in model container [2022-11-22 00:11:10,301 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:11:10" (1/1) ... [2022-11-22 00:11:10,308 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 00:11:10,347 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 00:11:10,581 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_beebb027-ecfd-4d37-a895-6820ad3fcade/sv-benchmarks/c/goblint-regression/36-apron_22-traces-write-centered-vs-meet-mutex_true_no-overflow.i[1120,1133] [2022-11-22 00:11:10,845 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 00:11:10,863 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 00:11:10,876 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_beebb027-ecfd-4d37-a895-6820ad3fcade/sv-benchmarks/c/goblint-regression/36-apron_22-traces-write-centered-vs-meet-mutex_true_no-overflow.i[1120,1133] [2022-11-22 00:11:10,913 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 00:11:10,955 INFO L208 MainTranslator]: Completed translation [2022-11-22 00:11:10,956 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:11:10 WrapperNode [2022-11-22 00:11:10,956 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 00:11:10,958 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 00:11:10,958 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 00:11:10,959 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 00:11:10,967 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:11:10" (1/1) ... [2022-11-22 00:11:10,998 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:11:10" (1/1) ... [2022-11-22 00:11:11,045 INFO L138 Inliner]: procedures = 165, calls = 42, calls flagged for inlining = 9, calls inlined = 11, statements flattened = 139 [2022-11-22 00:11:11,046 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 00:11:11,046 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 00:11:11,047 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 00:11:11,047 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 00:11:11,057 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:11:10" (1/1) ... [2022-11-22 00:11:11,058 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:11:10" (1/1) ... [2022-11-22 00:11:11,078 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:11:10" (1/1) ... [2022-11-22 00:11:11,078 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:11:10" (1/1) ... [2022-11-22 00:11:11,083 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:11:10" (1/1) ... [2022-11-22 00:11:11,100 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:11:10" (1/1) ... [2022-11-22 00:11:11,101 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:11:10" (1/1) ... [2022-11-22 00:11:11,103 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:11:10" (1/1) ... [2022-11-22 00:11:11,105 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 00:11:11,106 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 00:11:11,107 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 00:11:11,107 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 00:11:11,108 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:11:10" (1/1) ... [2022-11-22 00:11:11,114 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 00:11:11,127 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beebb027-ecfd-4d37-a895-6820ad3fcade/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:11:11,148 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beebb027-ecfd-4d37-a895-6820ad3fcade/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 00:11:11,154 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beebb027-ecfd-4d37-a895-6820ad3fcade/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 00:11:11,191 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-22 00:11:11,195 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-22 00:11:11,196 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-22 00:11:11,196 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-22 00:11:11,196 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-11-22 00:11:11,196 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-11-22 00:11:11,196 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-22 00:11:11,197 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-22 00:11:11,197 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 00:11:11,197 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 00:11:11,199 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-22 00:11:11,368 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 00:11:11,371 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 00:11:11,709 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 00:11:11,718 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 00:11:11,718 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-22 00:11:11,721 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:11:11 BoogieIcfgContainer [2022-11-22 00:11:11,721 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 00:11:11,723 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 00:11:11,724 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 00:11:11,727 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 00:11:11,727 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 12:11:10" (1/3) ... [2022-11-22 00:11:11,728 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e0defbd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:11:11, skipping insertion in model container [2022-11-22 00:11:11,728 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:11:10" (2/3) ... [2022-11-22 00:11:11,729 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e0defbd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:11:11, skipping insertion in model container [2022-11-22 00:11:11,729 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:11:11" (3/3) ... [2022-11-22 00:11:11,730 INFO L112 eAbstractionObserver]: Analyzing ICFG 36-apron_22-traces-write-centered-vs-meet-mutex_true_no-overflow.i [2022-11-22 00:11:11,768 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 00:11:11,769 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-11-22 00:11:11,769 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-22 00:11:11,887 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-22 00:11:11,941 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-22 00:11:11,960 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 184 places, 189 transitions, 383 flow [2022-11-22 00:11:11,967 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 184 places, 189 transitions, 383 flow [2022-11-22 00:11:11,969 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 184 places, 189 transitions, 383 flow [2022-11-22 00:11:12,120 INFO L130 PetriNetUnfolder]: 8/195 cut-off events. [2022-11-22 00:11:12,120 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-22 00:11:12,132 INFO L83 FinitePrefix]: Finished finitePrefix Result has 199 conditions, 195 events. 8/195 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 188 event pairs, 0 based on Foata normal form. 0/179 useless extension candidates. Maximal degree in co-relation 139. Up to 2 conditions per place. [2022-11-22 00:11:12,139 INFO L119 LiptonReduction]: Number of co-enabled transitions 9240 [2022-11-22 00:11:20,331 INFO L134 LiptonReduction]: Checked pairs total: 15610 [2022-11-22 00:11:20,331 INFO L136 LiptonReduction]: Total number of compositions: 212 [2022-11-22 00:11:20,339 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 37 places, 37 transitions, 79 flow [2022-11-22 00:11:20,368 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 227 states, 217 states have (on average 2.1382488479262673) internal successors, (464), 226 states have internal predecessors, (464), 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) [2022-11-22 00:11:20,394 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 00:11:20,400 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;@47d86c31, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 00:11:20,400 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2022-11-22 00:11:20,403 INFO L276 IsEmpty]: Start isEmpty. Operand has 227 states, 217 states have (on average 2.1382488479262673) internal successors, (464), 226 states have internal predecessors, (464), 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) [2022-11-22 00:11:20,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2022-11-22 00:11:20,408 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:11:20,408 INFO L195 NwaCegarLoop]: trace histogram [1] [2022-11-22 00:11:20,409 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2022-11-22 00:11:20,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:11:20,414 INFO L85 PathProgramCache]: Analyzing trace with hash 743, now seen corresponding path program 1 times [2022-11-22 00:11:20,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:11:20,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097363273] [2022-11-22 00:11:20,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:11:20,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:11:20,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:11:20,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:11:20,530 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:11:20,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097363273] [2022-11-22 00:11:20,531 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097363273] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:11:20,531 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:11:20,531 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-11-22 00:11:20,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431280858] [2022-11-22 00:11:20,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:11:20,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-22 00:11:20,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:11:20,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-22 00:11:20,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-22 00:11:20,561 INFO L87 Difference]: Start difference. First operand has 227 states, 217 states have (on average 2.1382488479262673) internal successors, (464), 226 states have internal predecessors, (464), 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) [2022-11-22 00:11:20,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:11:20,618 INFO L93 Difference]: Finished difference Result 225 states and 431 transitions. [2022-11-22 00:11:20,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-22 00:11:20,620 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 [2022-11-22 00:11:20,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:11:20,630 INFO L225 Difference]: With dead ends: 225 [2022-11-22 00:11:20,630 INFO L226 Difference]: Without dead ends: 225 [2022-11-22 00:11:20,631 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 [2022-11-22 00:11:20,634 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 00:11:20,635 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 7 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 00:11:20,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2022-11-22 00:11:20,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 225. [2022-11-22 00:11:20,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 217 states have (on average 1.9861751152073732) internal successors, (431), 224 states have internal predecessors, (431), 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) [2022-11-22 00:11:20,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 431 transitions. [2022-11-22 00:11:20,683 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 431 transitions. Word has length 1 [2022-11-22 00:11:20,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:11:20,683 INFO L495 AbstractCegarLoop]: Abstraction has 225 states and 431 transitions. [2022-11-22 00:11:20,683 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) [2022-11-22 00:11:20,684 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 431 transitions. [2022-11-22 00:11:20,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-22 00:11:20,684 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:11:20,684 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-22 00:11:20,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-22 00:11:20,685 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2022-11-22 00:11:20,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:11:20,686 INFO L85 PathProgramCache]: Analyzing trace with hash 23146, now seen corresponding path program 1 times [2022-11-22 00:11:20,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:11:20,686 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170249034] [2022-11-22 00:11:20,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:11:20,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:11:20,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:11:20,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:11:20,762 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:11:20,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170249034] [2022-11-22 00:11:20,763 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170249034] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:11:20,764 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:11:20,766 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-22 00:11:20,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157068879] [2022-11-22 00:11:20,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:11:20,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 00:11:20,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:11:20,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 00:11:20,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:11:20,771 INFO L87 Difference]: Start difference. First operand 225 states and 431 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2022-11-22 00:11:20,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:11:20,876 INFO L93 Difference]: Finished difference Result 224 states and 430 transitions. [2022-11-22 00:11:20,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 00:11:20,877 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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 2 [2022-11-22 00:11:20,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:11:20,879 INFO L225 Difference]: With dead ends: 224 [2022-11-22 00:11:20,881 INFO L226 Difference]: Without dead ends: 223 [2022-11-22 00:11:20,881 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 [2022-11-22 00:11:20,883 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 10 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 00:11:20,884 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 13 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 00:11:20,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2022-11-22 00:11:20,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 223. [2022-11-22 00:11:20,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 216 states have (on average 1.9861111111111112) internal successors, (429), 222 states have internal predecessors, (429), 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) [2022-11-22 00:11:20,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 429 transitions. [2022-11-22 00:11:20,909 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 429 transitions. Word has length 2 [2022-11-22 00:11:20,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:11:20,909 INFO L495 AbstractCegarLoop]: Abstraction has 223 states and 429 transitions. [2022-11-22 00:11:20,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2022-11-22 00:11:20,910 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 429 transitions. [2022-11-22 00:11:20,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-22 00:11:20,910 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:11:20,910 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-22 00:11:20,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-22 00:11:20,911 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2022-11-22 00:11:20,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:11:20,911 INFO L85 PathProgramCache]: Analyzing trace with hash 254695930, now seen corresponding path program 1 times [2022-11-22 00:11:20,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:11:20,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139030467] [2022-11-22 00:11:20,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:11:20,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:11:20,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:11:21,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:11:21,230 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:11:21,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139030467] [2022-11-22 00:11:21,231 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139030467] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:11:21,231 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:11:21,231 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 00:11:21,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977768114] [2022-11-22 00:11:21,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:11:21,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 00:11:21,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:11:21,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 00:11:21,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-22 00:11:21,233 INFO L87 Difference]: Start difference. First operand 223 states and 429 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2022-11-22 00:11:21,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:11:21,338 INFO L93 Difference]: Finished difference Result 233 states and 444 transitions. [2022-11-22 00:11:21,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 00:11:21,339 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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 6 [2022-11-22 00:11:21,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:11:21,342 INFO L225 Difference]: With dead ends: 233 [2022-11-22 00:11:21,342 INFO L226 Difference]: Without dead ends: 233 [2022-11-22 00:11:21,342 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 [2022-11-22 00:11:21,344 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 36 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 00:11:21,344 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 21 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 00:11:21,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2022-11-22 00:11:21,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 220. [2022-11-22 00:11:21,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 213 states have (on average 1.9859154929577465) internal successors, (423), 219 states have internal predecessors, (423), 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) [2022-11-22 00:11:21,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 423 transitions. [2022-11-22 00:11:21,383 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 423 transitions. Word has length 6 [2022-11-22 00:11:21,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:11:21,383 INFO L495 AbstractCegarLoop]: Abstraction has 220 states and 423 transitions. [2022-11-22 00:11:21,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2022-11-22 00:11:21,383 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 423 transitions. [2022-11-22 00:11:21,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-22 00:11:21,384 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:11:21,384 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:11:21,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-22 00:11:21,385 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2022-11-22 00:11:21,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:11:21,385 INFO L85 PathProgramCache]: Analyzing trace with hash -50383086, now seen corresponding path program 1 times [2022-11-22 00:11:21,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:11:21,386 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916378454] [2022-11-22 00:11:21,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:11:21,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:11:21,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:11:21,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:11:21,589 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:11:21,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916378454] [2022-11-22 00:11:21,592 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916378454] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:11:21,593 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:11:21,593 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-22 00:11:21,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101449816] [2022-11-22 00:11:21,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:11:21,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-22 00:11:21,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:11:21,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-22 00:11:21,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-22 00:11:21,594 INFO L87 Difference]: Start difference. First operand 220 states and 423 transitions. Second operand has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 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) [2022-11-22 00:11:21,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:11:21,830 INFO L93 Difference]: Finished difference Result 324 states and 595 transitions. [2022-11-22 00:11:21,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-22 00:11:21,831 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 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 [2022-11-22 00:11:21,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:11:21,835 INFO L225 Difference]: With dead ends: 324 [2022-11-22 00:11:21,835 INFO L226 Difference]: Without dead ends: 324 [2022-11-22 00:11:21,836 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2022-11-22 00:11:21,841 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 106 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-22 00:11:21,843 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 88 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-22 00:11:21,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2022-11-22 00:11:21,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 240. [2022-11-22 00:11:21,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 233 states have (on average 1.9785407725321889) internal successors, (461), 239 states have internal predecessors, (461), 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) [2022-11-22 00:11:21,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 461 transitions. [2022-11-22 00:11:21,864 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 461 transitions. Word has length 8 [2022-11-22 00:11:21,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:11:21,864 INFO L495 AbstractCegarLoop]: Abstraction has 240 states and 461 transitions. [2022-11-22 00:11:21,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 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) [2022-11-22 00:11:21,865 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 461 transitions. [2022-11-22 00:11:21,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-22 00:11:21,866 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:11:21,866 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:11:21,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-22 00:11:21,866 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2022-11-22 00:11:21,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:11:21,867 INFO L85 PathProgramCache]: Analyzing trace with hash -1902791666, now seen corresponding path program 1 times [2022-11-22 00:11:21,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:11:21,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120246998] [2022-11-22 00:11:21,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:11:21,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:11:21,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:11:21,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:11:21,984 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:11:21,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120246998] [2022-11-22 00:11:21,985 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120246998] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:11:21,985 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:11:21,985 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-22 00:11:21,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833465177] [2022-11-22 00:11:21,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:11:21,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 00:11:21,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:11:21,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 00:11:21,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-22 00:11:21,987 INFO L87 Difference]: Start difference. First operand 240 states and 461 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 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) [2022-11-22 00:11:22,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:11:22,086 INFO L93 Difference]: Finished difference Result 194 states and 330 transitions. [2022-11-22 00:11:22,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-22 00:11:22,087 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 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 [2022-11-22 00:11:22,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:11:22,088 INFO L225 Difference]: With dead ends: 194 [2022-11-22 00:11:22,088 INFO L226 Difference]: Without dead ends: 194 [2022-11-22 00:11:22,088 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-22 00:11:22,090 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 44 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 00:11:22,091 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 8 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 00:11:22,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2022-11-22 00:11:22,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 159. [2022-11-22 00:11:22,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 148 states have (on average 1.8716216216216217) internal successors, (277), 158 states have internal predecessors, (277), 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) [2022-11-22 00:11:22,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 277 transitions. [2022-11-22 00:11:22,118 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 277 transitions. Word has length 10 [2022-11-22 00:11:22,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:11:22,119 INFO L495 AbstractCegarLoop]: Abstraction has 159 states and 277 transitions. [2022-11-22 00:11:22,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 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) [2022-11-22 00:11:22,120 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 277 transitions. [2022-11-22 00:11:22,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-22 00:11:22,122 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:11:22,123 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:11:22,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-22 00:11:22,123 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2022-11-22 00:11:22,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:11:22,124 INFO L85 PathProgramCache]: Analyzing trace with hash -1173321416, now seen corresponding path program 1 times [2022-11-22 00:11:22,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:11:22,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310064610] [2022-11-22 00:11:22,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:11:22,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:11:22,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:11:22,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:11:22,372 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:11:22,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310064610] [2022-11-22 00:11:22,373 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310064610] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:11:22,373 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:11:22,373 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-22 00:11:22,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982414626] [2022-11-22 00:11:22,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:11:22,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-22 00:11:22,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:11:22,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-22 00:11:22,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-22 00:11:22,376 INFO L87 Difference]: Start difference. First operand 159 states and 277 transitions. Second operand has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 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) [2022-11-22 00:11:22,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:11:22,501 INFO L93 Difference]: Finished difference Result 181 states and 305 transitions. [2022-11-22 00:11:22,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-22 00:11:22,502 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 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 [2022-11-22 00:11:22,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:11:22,503 INFO L225 Difference]: With dead ends: 181 [2022-11-22 00:11:22,503 INFO L226 Difference]: Without dead ends: 181 [2022-11-22 00:11:22,503 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-11-22 00:11:22,504 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 40 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 00:11:22,504 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 46 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 00:11:22,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2022-11-22 00:11:22,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 157. [2022-11-22 00:11:22,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 147 states have (on average 1.8639455782312926) internal successors, (274), 156 states have internal predecessors, (274), 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) [2022-11-22 00:11:22,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 274 transitions. [2022-11-22 00:11:22,510 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 274 transitions. Word has length 10 [2022-11-22 00:11:22,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:11:22,510 INFO L495 AbstractCegarLoop]: Abstraction has 157 states and 274 transitions. [2022-11-22 00:11:22,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 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) [2022-11-22 00:11:22,510 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 274 transitions. [2022-11-22 00:11:22,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-22 00:11:22,511 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:11:22,511 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:11:22,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-22 00:11:22,512 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2022-11-22 00:11:22,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:11:22,512 INFO L85 PathProgramCache]: Analyzing trace with hash -812325136, now seen corresponding path program 1 times [2022-11-22 00:11:22,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:11:22,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924880892] [2022-11-22 00:11:22,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:11:22,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:11:22,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:11:22,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:11:22,666 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:11:22,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924880892] [2022-11-22 00:11:22,666 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924880892] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:11:22,666 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:11:22,667 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-22 00:11:22,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189200063] [2022-11-22 00:11:22,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:11:22,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 00:11:22,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:11:22,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 00:11:22,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 00:11:22,668 INFO L87 Difference]: Start difference. First operand 157 states and 274 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 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) [2022-11-22 00:11:22,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:11:22,806 INFO L93 Difference]: Finished difference Result 160 states and 279 transitions. [2022-11-22 00:11:22,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 00:11:22,807 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 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 [2022-11-22 00:11:22,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:11:22,807 INFO L225 Difference]: With dead ends: 160 [2022-11-22 00:11:22,808 INFO L226 Difference]: Without dead ends: 160 [2022-11-22 00:11:22,808 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-22 00:11:22,809 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 58 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 00:11:22,809 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 21 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 00:11:22,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2022-11-22 00:11:22,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 156. [2022-11-22 00:11:22,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 147 states have (on average 1.8571428571428572) internal successors, (273), 155 states have internal predecessors, (273), 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) [2022-11-22 00:11:22,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 273 transitions. [2022-11-22 00:11:22,814 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 273 transitions. Word has length 12 [2022-11-22 00:11:22,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:11:22,814 INFO L495 AbstractCegarLoop]: Abstraction has 156 states and 273 transitions. [2022-11-22 00:11:22,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 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) [2022-11-22 00:11:22,815 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 273 transitions. [2022-11-22 00:11:22,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-22 00:11:22,815 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:11:22,815 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:11:22,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-22 00:11:22,816 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2022-11-22 00:11:22,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:11:22,816 INFO L85 PathProgramCache]: Analyzing trace with hash 1039556232, now seen corresponding path program 1 times [2022-11-22 00:11:22,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:11:22,817 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514608727] [2022-11-22 00:11:22,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:11:22,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:11:22,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:11:22,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:11:22,976 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:11:22,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514608727] [2022-11-22 00:11:22,977 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514608727] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:11:22,977 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:11:22,977 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-22 00:11:22,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290981025] [2022-11-22 00:11:22,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:11:22,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 00:11:22,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:11:22,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 00:11:22,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-22 00:11:22,978 INFO L87 Difference]: Start difference. First operand 156 states and 273 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 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) [2022-11-22 00:11:23,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:11:23,062 INFO L93 Difference]: Finished difference Result 158 states and 269 transitions. [2022-11-22 00:11:23,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-22 00:11:23,062 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 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 [2022-11-22 00:11:23,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:11:23,063 INFO L225 Difference]: With dead ends: 158 [2022-11-22 00:11:23,063 INFO L226 Difference]: Without dead ends: 152 [2022-11-22 00:11:23,063 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-22 00:11:23,065 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 63 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 00:11:23,066 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 6 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 00:11:23,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2022-11-22 00:11:23,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 137. [2022-11-22 00:11:23,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 130 states have (on average 1.853846153846154) internal successors, (241), 136 states have internal predecessors, (241), 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) [2022-11-22 00:11:23,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 241 transitions. [2022-11-22 00:11:23,071 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 241 transitions. Word has length 14 [2022-11-22 00:11:23,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:11:23,071 INFO L495 AbstractCegarLoop]: Abstraction has 137 states and 241 transitions. [2022-11-22 00:11:23,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 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) [2022-11-22 00:11:23,072 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 241 transitions. [2022-11-22 00:11:23,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-22 00:11:23,073 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:11:23,073 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:11:23,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-22 00:11:23,073 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2022-11-22 00:11:23,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:11:23,074 INFO L85 PathProgramCache]: Analyzing trace with hash -1992089466, now seen corresponding path program 1 times [2022-11-22 00:11:23,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:11:23,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718138250] [2022-11-22 00:11:23,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:11:23,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:11:23,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:11:23,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:11:23,187 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:11:23,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718138250] [2022-11-22 00:11:23,187 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718138250] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:11:23,187 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:11:23,188 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-22 00:11:23,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895323824] [2022-11-22 00:11:23,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:11:23,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 00:11:23,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:11:23,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 00:11:23,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 00:11:23,190 INFO L87 Difference]: Start difference. First operand 137 states and 241 transitions. Second operand has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:11:23,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:11:23,300 INFO L93 Difference]: Finished difference Result 145 states and 246 transitions. [2022-11-22 00:11:23,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-22 00:11:23,302 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-11-22 00:11:23,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:11:23,303 INFO L225 Difference]: With dead ends: 145 [2022-11-22 00:11:23,303 INFO L226 Difference]: Without dead ends: 145 [2022-11-22 00:11:23,303 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-11-22 00:11:23,304 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 65 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 00:11:23,304 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 22 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 00:11:23,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2022-11-22 00:11:23,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 130. [2022-11-22 00:11:23,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 125 states have (on average 1.824) internal successors, (228), 129 states have internal predecessors, (228), 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) [2022-11-22 00:11:23,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 228 transitions. [2022-11-22 00:11:23,309 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 228 transitions. Word has length 15 [2022-11-22 00:11:23,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:11:23,309 INFO L495 AbstractCegarLoop]: Abstraction has 130 states and 228 transitions. [2022-11-22 00:11:23,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:11:23,309 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 228 transitions. [2022-11-22 00:11:23,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-22 00:11:23,315 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:11:23,315 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:11:23,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-22 00:11:23,316 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2022-11-22 00:11:23,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:11:23,316 INFO L85 PathProgramCache]: Analyzing trace with hash 351737913, now seen corresponding path program 1 times [2022-11-22 00:11:23,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:11:23,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078053261] [2022-11-22 00:11:23,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:11:23,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:11:23,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:11:23,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:11:23,500 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:11:23,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078053261] [2022-11-22 00:11:23,501 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078053261] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:11:23,501 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:11:23,501 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 00:11:23,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886486129] [2022-11-22 00:11:23,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:11:23,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 00:11:23,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:11:23,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 00:11:23,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-22 00:11:23,507 INFO L87 Difference]: Start difference. First operand 130 states and 228 transitions. Second operand has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:11:23,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:11:23,578 INFO L93 Difference]: Finished difference Result 117 states and 202 transitions. [2022-11-22 00:11:23,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-22 00:11:23,579 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-22 00:11:23,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:11:23,579 INFO L225 Difference]: With dead ends: 117 [2022-11-22 00:11:23,580 INFO L226 Difference]: Without dead ends: 75 [2022-11-22 00:11:23,580 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-22 00:11:23,581 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 27 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 00:11:23,582 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 12 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 00:11:23,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2022-11-22 00:11:23,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2022-11-22 00:11:23,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 73 states have (on average 1.6849315068493151) internal successors, (123), 74 states have internal predecessors, (123), 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) [2022-11-22 00:11:23,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 123 transitions. [2022-11-22 00:11:23,585 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 123 transitions. Word has length 16 [2022-11-22 00:11:23,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:11:23,586 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 123 transitions. [2022-11-22 00:11:23,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:11:23,587 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 123 transitions. [2022-11-22 00:11:23,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-22 00:11:23,587 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:11:23,587 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:11:23,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-22 00:11:23,588 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t_funErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2022-11-22 00:11:23,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:11:23,589 INFO L85 PathProgramCache]: Analyzing trace with hash -1566243857, now seen corresponding path program 1 times [2022-11-22 00:11:23,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:11:23,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578482170] [2022-11-22 00:11:23,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:11:23,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:11:23,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:11:23,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:11:23,805 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:11:23,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578482170] [2022-11-22 00:11:23,806 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578482170] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:11:23,806 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:11:23,806 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-22 00:11:23,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603030018] [2022-11-22 00:11:23,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:11:23,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-22 00:11:23,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:11:23,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-22 00:11:23,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-22 00:11:23,808 INFO L87 Difference]: Start difference. First operand 75 states and 123 transitions. Second operand has 7 states, 6 states have (on average 3.0) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:11:23,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:11:23,952 INFO L93 Difference]: Finished difference Result 70 states and 114 transitions. [2022-11-22 00:11:23,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-22 00:11:23,952 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-11-22 00:11:23,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:11:23,953 INFO L225 Difference]: With dead ends: 70 [2022-11-22 00:11:23,953 INFO L226 Difference]: Without dead ends: 70 [2022-11-22 00:11:23,953 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-11-22 00:11:23,954 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 55 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 00:11:23,954 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 38 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 00:11:23,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2022-11-22 00:11:23,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2022-11-22 00:11:23,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 69 states have (on average 1.6521739130434783) internal successors, (114), 69 states have internal predecessors, (114), 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) [2022-11-22 00:11:23,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 114 transitions. [2022-11-22 00:11:23,958 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 114 transitions. Word has length 18 [2022-11-22 00:11:23,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:11:23,958 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 114 transitions. [2022-11-22 00:11:23,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:11:23,959 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 114 transitions. [2022-11-22 00:11:23,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-22 00:11:23,959 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:11:23,959 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:11:23,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-22 00:11:23,960 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t_funErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2022-11-22 00:11:23,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:11:23,960 INFO L85 PathProgramCache]: Analyzing trace with hash -1921609003, now seen corresponding path program 1 times [2022-11-22 00:11:23,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:11:23,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241883594] [2022-11-22 00:11:23,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:11:23,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:11:23,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:11:24,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:11:24,126 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:11:24,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241883594] [2022-11-22 00:11:24,126 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241883594] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:11:24,127 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:11:24,127 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 00:11:24,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743147361] [2022-11-22 00:11:24,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:11:24,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 00:11:24,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:11:24,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 00:11:24,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-22 00:11:24,128 INFO L87 Difference]: Start difference. First operand 70 states and 114 transitions. Second operand has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:11:24,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:11:24,182 INFO L93 Difference]: Finished difference Result 71 states and 112 transitions. [2022-11-22 00:11:24,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-22 00:11:24,183 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-11-22 00:11:24,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:11:24,183 INFO L225 Difference]: With dead ends: 71 [2022-11-22 00:11:24,184 INFO L226 Difference]: Without dead ends: 47 [2022-11-22 00:11:24,184 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-22 00:11:24,184 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 7 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 00:11:24,185 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 21 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 00:11:24,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2022-11-22 00:11:24,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2022-11-22 00:11:24,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 46 states have (on average 1.4782608695652173) internal successors, (68), 46 states have internal predecessors, (68), 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) [2022-11-22 00:11:24,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 68 transitions. [2022-11-22 00:11:24,187 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 68 transitions. Word has length 20 [2022-11-22 00:11:24,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:11:24,189 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 68 transitions. [2022-11-22 00:11:24,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:11:24,190 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 68 transitions. [2022-11-22 00:11:24,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-22 00:11:24,190 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:11:24,191 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:11:24,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-22 00:11:24,192 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t_funErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2022-11-22 00:11:24,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:11:24,192 INFO L85 PathProgramCache]: Analyzing trace with hash 1009782707, now seen corresponding path program 1 times [2022-11-22 00:11:24,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:11:24,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534664798] [2022-11-22 00:11:24,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:11:24,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:11:24,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:11:24,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:11:24,519 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:11:24,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534664798] [2022-11-22 00:11:24,520 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1534664798] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:11:24,520 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:11:24,520 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-22 00:11:24,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837040354] [2022-11-22 00:11:24,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:11:24,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 00:11:24,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:11:24,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 00:11:24,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-22 00:11:24,522 INFO L87 Difference]: Start difference. First operand 47 states and 68 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:11:24,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:11:24,571 INFO L93 Difference]: Finished difference Result 34 states and 46 transitions. [2022-11-22 00:11:24,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-22 00:11:24,571 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-11-22 00:11:24,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:11:24,572 INFO L225 Difference]: With dead ends: 34 [2022-11-22 00:11:24,572 INFO L226 Difference]: Without dead ends: 0 [2022-11-22 00:11:24,572 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-22 00:11:24,573 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 21 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 00:11:24,573 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 3 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 00:11:24,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-22 00:11:24,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-22 00:11:24,574 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) [2022-11-22 00:11:24,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-22 00:11:24,574 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 22 [2022-11-22 00:11:24,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:11:24,574 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-22 00:11:24,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:11:24,575 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-22 00:11:24,575 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-22 00:11:24,577 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (9 of 10 remaining) [2022-11-22 00:11:24,578 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 10 remaining) [2022-11-22 00:11:24,578 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 10 remaining) [2022-11-22 00:11:24,578 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 10 remaining) [2022-11-22 00:11:24,578 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONMEMORY_LEAK (5 of 10 remaining) [2022-11-22 00:11:24,578 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONMEMORY_LEAK (4 of 10 remaining) [2022-11-22 00:11:24,578 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONMEMORY_LEAK (3 of 10 remaining) [2022-11-22 00:11:24,579 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONMEMORY_LEAK (2 of 10 remaining) [2022-11-22 00:11:24,579 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONMEMORY_LEAK (1 of 10 remaining) [2022-11-22 00:11:24,579 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONMEMORY_LEAK (0 of 10 remaining) [2022-11-22 00:11:24,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-22 00:11:24,581 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:11:24,586 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-22 00:11:24,586 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-22 00:11:24,588 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 12:11:24 BasicIcfg [2022-11-22 00:11:24,588 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-22 00:11:24,589 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-22 00:11:24,589 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-22 00:11:24,589 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-22 00:11:24,590 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:11:11" (3/4) ... [2022-11-22 00:11:24,592 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-22 00:11:24,598 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t_fun [2022-11-22 00:11:24,602 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2022-11-22 00:11:24,603 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-11-22 00:11:24,603 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-11-22 00:11:24,603 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-22 00:11:24,637 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beebb027-ecfd-4d37-a895-6820ad3fcade/bin/utaipan-g80aRyZoba/witness.graphml [2022-11-22 00:11:24,637 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-22 00:11:24,638 INFO L158 Benchmark]: Toolchain (without parser) took 14344.35ms. Allocated memory was 180.4MB in the beginning and 262.1MB in the end (delta: 81.8MB). Free memory was 150.0MB in the beginning and 212.6MB in the end (delta: -62.6MB). Peak memory consumption was 21.1MB. Max. memory is 16.1GB. [2022-11-22 00:11:24,638 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 130.0MB. Free memory was 96.4MB in the beginning and 96.3MB in the end (delta: 70.1kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-22 00:11:24,638 INFO L158 Benchmark]: CACSL2BoogieTranslator took 662.45ms. Allocated memory is still 180.4MB. Free memory was 150.0MB in the beginning and 129.9MB in the end (delta: 20.1MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-11-22 00:11:24,638 INFO L158 Benchmark]: Boogie Procedure Inliner took 87.86ms. Allocated memory is still 180.4MB. Free memory was 129.9MB in the beginning and 127.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-22 00:11:24,639 INFO L158 Benchmark]: Boogie Preprocessor took 59.29ms. Allocated memory is still 180.4MB. Free memory was 127.0MB in the beginning and 126.1MB in the end (delta: 861.4kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-22 00:11:24,639 INFO L158 Benchmark]: RCFGBuilder took 614.64ms. Allocated memory is still 180.4MB. Free memory was 126.1MB in the beginning and 106.9MB in the end (delta: 19.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-11-22 00:11:24,639 INFO L158 Benchmark]: TraceAbstraction took 12865.18ms. Allocated memory was 180.4MB in the beginning and 262.1MB in the end (delta: 81.8MB). Free memory was 106.0MB in the beginning and 215.8MB in the end (delta: -109.8MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-22 00:11:24,639 INFO L158 Benchmark]: Witness Printer took 48.08ms. Allocated memory is still 262.1MB. Free memory was 215.8MB in the beginning and 212.6MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-22 00:11:24,641 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 130.0MB. Free memory was 96.4MB in the beginning and 96.3MB in the end (delta: 70.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 662.45ms. Allocated memory is still 180.4MB. Free memory was 150.0MB in the beginning and 129.9MB in the end (delta: 20.1MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 87.86ms. Allocated memory is still 180.4MB. Free memory was 129.9MB in the beginning and 127.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 59.29ms. Allocated memory is still 180.4MB. Free memory was 127.0MB in the beginning and 126.1MB in the end (delta: 861.4kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 614.64ms. Allocated memory is still 180.4MB. Free memory was 126.1MB in the beginning and 106.9MB in the end (delta: 19.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 12865.18ms. Allocated memory was 180.4MB in the beginning and 262.1MB in the end (delta: 81.8MB). Free memory was 106.0MB in the beginning and 215.8MB in the end (delta: -109.8MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 48.08ms. Allocated memory is still 262.1MB. Free memory was 215.8MB in the beginning and 212.6MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 8.4s, 184 PlacesBefore, 37 PlacesAfterwards, 189 TransitionsBefore, 37 TransitionsAfterwards, 9240 CoEnabledTransitionPairs, 8 FixpointIterations, 56 TrivialSequentialCompositions, 116 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 35 ConcurrentYvCompositions, 5 ChoiceCompositions, 212 TotalNumberOfCompositions, 15610 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 9565, independent: 9231, independent conditional: 0, independent unconditional: 9231, dependent: 334, dependent conditional: 0, dependent unconditional: 334, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 6942, independent: 6849, independent conditional: 0, independent unconditional: 6849, dependent: 93, dependent conditional: 0, dependent unconditional: 93, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 6942, independent: 6767, independent conditional: 0, independent unconditional: 6767, dependent: 175, dependent conditional: 0, dependent unconditional: 175, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 175, independent: 82, independent conditional: 0, independent unconditional: 82, dependent: 93, dependent conditional: 0, dependent unconditional: 93, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 423, independent: 161, independent conditional: 0, independent unconditional: 161, dependent: 262, dependent conditional: 0, dependent unconditional: 262, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 9565, independent: 2382, independent conditional: 0, independent unconditional: 2382, dependent: 241, dependent conditional: 0, dependent unconditional: 241, unknown: 6942, unknown conditional: 0, unknown unconditional: 6942] , Statistics on independence cache: Total cache size (in pairs): 225, Positive cache size: 191, Positive conditional cache size: 0, Positive unconditional cache size: 191, Negative cache size: 34, Negative conditional cache size: 0, Negative unconditional cache size: 34, 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: 730]: all allocated memory was freed For all program executions holds that all allocated memory was freed 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: 19]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 19]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 19]: 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 3 procedures, 261 locations, 10 error locations. Started 1 CEGAR loops. OverallTime: 12.6s, OverallIterations: 13, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 8.4s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 532 SdHoareTripleChecker+Valid, 1.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 532 mSDsluCounter, 306 SdHoareTripleChecker+Invalid, 0.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 194 mSDsCounter, 50 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1104 IncrementalHoareTripleChecker+Invalid, 1154 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 50 mSolverCounterUnsat, 112 mSDtfsCounter, 1104 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 74 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=240occurred in iteration=4, InterpolantAutomatonStates: 70, 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, 13 MinimizatonAttempts, 190 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 154 NumberOfCodeBlocks, 154 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 141 ConstructedInterpolants, 0 QuantifiedInterpolants, 726 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 13 InterpolantComputations, 13 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 6 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-22 00:11:24,666 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beebb027-ecfd-4d37-a895-6820ad3fcade/bin/utaipan-g80aRyZoba/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