./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/goblint-regression/09-regions_04-list2_nr.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19813d26-277a-4b9a-8d1e-43728c475fa4/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19813d26-277a-4b9a-8d1e-43728c475fa4/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_19813d26-277a-4b9a-8d1e-43728c475fa4/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19813d26-277a-4b9a-8d1e-43728c475fa4/bin/utaipan-g80aRyZoba/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/goblint-regression/09-regions_04-list2_nr.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19813d26-277a-4b9a-8d1e-43728c475fa4/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_19813d26-277a-4b9a-8d1e-43728c475fa4/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 22e95fa30ebde8538537e9926c639bef97cab57433fef0bd6d73df06023fa7d1 --- 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 01:19:54,234 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 01:19:54,236 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 01:19:54,277 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 01:19:54,278 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 01:19:54,282 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 01:19:54,284 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 01:19:54,287 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 01:19:54,290 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 01:19:54,296 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 01:19:54,298 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 01:19:54,301 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 01:19:54,301 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 01:19:54,303 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 01:19:54,305 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 01:19:54,307 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 01:19:54,308 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 01:19:54,309 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 01:19:54,311 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 01:19:54,320 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 01:19:54,321 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 01:19:54,324 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 01:19:54,325 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 01:19:54,326 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 01:19:54,337 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 01:19:54,337 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 01:19:54,337 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 01:19:54,339 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 01:19:54,340 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 01:19:54,341 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 01:19:54,341 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 01:19:54,342 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 01:19:54,344 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 01:19:54,346 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 01:19:54,347 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 01:19:54,347 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 01:19:54,348 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 01:19:54,348 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 01:19:54,349 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 01:19:54,350 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 01:19:54,351 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 01:19:54,352 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19813d26-277a-4b9a-8d1e-43728c475fa4/bin/utaipan-g80aRyZoba/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2022-11-22 01:19:54,396 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 01:19:54,396 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 01:19:54,397 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 01:19:54,397 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 01:19:54,398 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 01:19:54,398 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 01:19:54,398 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 01:19:54,398 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 01:19:54,399 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 01:19:54,399 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-22 01:19:54,400 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 01:19:54,400 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 01:19:54,400 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-22 01:19:54,400 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-22 01:19:54,401 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 01:19:54,401 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-22 01:19:54,401 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-22 01:19:54,401 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-22 01:19:54,402 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-22 01:19:54,403 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-22 01:19:54,403 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 01:19:54,403 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-22 01:19:54,403 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-22 01:19:54,404 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-22 01:19:54,404 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-22 01:19:54,405 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 01:19:54,405 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-22 01:19:54,405 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-22 01:19:54,405 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-22 01:19:54,406 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 01:19:54,406 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-22 01:19:54,406 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-22 01:19:54,406 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 01:19:54,406 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 01:19:54,407 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 01:19:54,407 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 01:19:54,407 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 01:19:54,407 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-22 01:19:54,407 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 01:19:54,408 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-22 01:19:54,408 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-22 01:19:54,408 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 01:19:54,408 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19813d26-277a-4b9a-8d1e-43728c475fa4/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19813d26-277a-4b9a-8d1e-43728c475fa4/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 22e95fa30ebde8538537e9926c639bef97cab57433fef0bd6d73df06023fa7d1 [2022-11-22 01:19:54,696 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 01:19:54,735 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 01:19:54,738 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 01:19:54,739 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 01:19:54,739 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 01:19:54,741 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19813d26-277a-4b9a-8d1e-43728c475fa4/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/goblint-regression/09-regions_04-list2_nr.i [2022-11-22 01:19:57,755 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 01:19:58,141 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 01:19:58,141 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19813d26-277a-4b9a-8d1e-43728c475fa4/sv-benchmarks/c/goblint-regression/09-regions_04-list2_nr.i [2022-11-22 01:19:58,164 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19813d26-277a-4b9a-8d1e-43728c475fa4/bin/utaipan-g80aRyZoba/data/d7ead1ad2/db66c7fd0a304d91be26bab9116b6998/FLAGda9c8f546 [2022-11-22 01:19:58,185 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19813d26-277a-4b9a-8d1e-43728c475fa4/bin/utaipan-g80aRyZoba/data/d7ead1ad2/db66c7fd0a304d91be26bab9116b6998 [2022-11-22 01:19:58,188 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 01:19:58,190 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 01:19:58,192 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 01:19:58,192 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 01:19:58,196 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 01:19:58,196 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:19:58" (1/1) ... [2022-11-22 01:19:58,198 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ca1aa30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:19:58, skipping insertion in model container [2022-11-22 01:19:58,198 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:19:58" (1/1) ... [2022-11-22 01:19:58,206 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 01:19:58,268 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 01:19:58,870 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 01:19:58,886 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 01:19:58,977 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 01:19:59,081 INFO L208 MainTranslator]: Completed translation [2022-11-22 01:19:59,081 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:19:59 WrapperNode [2022-11-22 01:19:59,082 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 01:19:59,083 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 01:19:59,083 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 01:19:59,084 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 01:19:59,091 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:19:59" (1/1) ... [2022-11-22 01:19:59,137 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:19:59" (1/1) ... [2022-11-22 01:19:59,180 INFO L138 Inliner]: procedures = 368, calls = 45, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 86 [2022-11-22 01:19:59,180 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 01:19:59,181 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 01:19:59,182 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 01:19:59,182 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 01:19:59,193 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:19:59" (1/1) ... [2022-11-22 01:19:59,193 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:19:59" (1/1) ... [2022-11-22 01:19:59,209 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:19:59" (1/1) ... [2022-11-22 01:19:59,217 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:19:59" (1/1) ... [2022-11-22 01:19:59,235 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:19:59" (1/1) ... [2022-11-22 01:19:59,236 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:19:59" (1/1) ... [2022-11-22 01:19:59,238 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:19:59" (1/1) ... [2022-11-22 01:19:59,240 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:19:59" (1/1) ... [2022-11-22 01:19:59,242 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 01:19:59,243 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 01:19:59,243 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 01:19:59,244 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 01:19:59,244 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:19:59" (1/1) ... [2022-11-22 01:19:59,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 01:19:59,264 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19813d26-277a-4b9a-8d1e-43728c475fa4/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:19:59,287 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19813d26-277a-4b9a-8d1e-43728c475fa4/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 01:19:59,318 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19813d26-277a-4b9a-8d1e-43728c475fa4/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 01:19:59,338 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-22 01:19:59,339 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-22 01:19:59,339 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-22 01:19:59,339 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-22 01:19:59,339 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-22 01:19:59,339 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-22 01:19:59,340 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-22 01:19:59,340 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-22 01:19:59,340 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-22 01:19:59,340 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-11-22 01:19:59,340 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-11-22 01:19:59,341 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-22 01:19:59,341 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 01:19:59,341 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 01:19:59,343 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 01:19:59,519 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 01:19:59,521 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 01:20:00,058 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 01:20:00,066 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 01:20:00,066 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-22 01:20:00,076 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:20:00 BoogieIcfgContainer [2022-11-22 01:20:00,076 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 01:20:00,078 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 01:20:00,078 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 01:20:00,082 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 01:20:00,082 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:19:58" (1/3) ... [2022-11-22 01:20:00,083 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a597d96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:20:00, skipping insertion in model container [2022-11-22 01:20:00,083 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:19:59" (2/3) ... [2022-11-22 01:20:00,083 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a597d96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:20:00, skipping insertion in model container [2022-11-22 01:20:00,083 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:20:00" (3/3) ... [2022-11-22 01:20:00,085 INFO L112 eAbstractionObserver]: Analyzing ICFG 09-regions_04-list2_nr.i [2022-11-22 01:20:00,106 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 01:20:00,107 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 43 error locations. [2022-11-22 01:20:00,107 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-22 01:20:00,228 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-22 01:20:00,270 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-22 01:20:00,287 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 175 places, 171 transitions, 347 flow [2022-11-22 01:20:00,289 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 175 places, 171 transitions, 347 flow [2022-11-22 01:20:00,291 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 175 places, 171 transitions, 347 flow [2022-11-22 01:20:00,391 INFO L130 PetriNetUnfolder]: 0/170 cut-off events. [2022-11-22 01:20:00,391 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-22 01:20:00,395 INFO L83 FinitePrefix]: Finished finitePrefix Result has 174 conditions, 170 events. 0/170 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 220 event pairs, 0 based on Foata normal form. 0/127 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2022-11-22 01:20:00,398 INFO L119 LiptonReduction]: Number of co-enabled transitions 2590 [2022-11-22 01:20:58,513 WARN L233 SmtUtils]: Spent 19.18s on a formula simplification. DAG size of input: 239 DAG size of output: 227 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-22 01:21:05,797 WARN L233 SmtUtils]: Spent 7.28s on a formula simplification that was a NOOP. DAG size: 212 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-22 01:21:27,556 WARN L233 SmtUtils]: Spent 21.76s on a formula simplification. DAG size of input: 239 DAG size of output: 230 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-22 01:21:36,453 WARN L233 SmtUtils]: Spent 8.89s on a formula simplification that was a NOOP. DAG size: 216 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-22 01:22:00,863 WARN L233 SmtUtils]: Spent 24.41s on a formula simplification. DAG size of input: 244 DAG size of output: 235 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-22 01:22:10,724 WARN L233 SmtUtils]: Spent 9.86s on a formula simplification that was a NOOP. DAG size: 218 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-22 01:22:32,747 WARN L233 SmtUtils]: Spent 22.02s on a formula simplification. DAG size of input: 244 DAG size of output: 232 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-22 01:22:39,458 WARN L233 SmtUtils]: Spent 6.71s on a formula simplification that was a NOOP. DAG size: 217 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-22 01:23:15,917 WARN L233 SmtUtils]: Spent 36.18s on a formula simplification. DAG size of input: 258 DAG size of output: 249 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-22 01:23:32,289 WARN L233 SmtUtils]: Spent 16.37s on a formula simplification that was a NOOP. DAG size: 235 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-22 01:24:19,921 WARN L233 SmtUtils]: Spent 47.63s on a formula simplification. DAG size of input: 258 DAG size of output: 249 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-22 01:24:39,521 WARN L233 SmtUtils]: Spent 19.60s on a formula simplification that was a NOOP. DAG size: 234 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-22 01:26:02,428 WARN L233 SmtUtils]: Spent 1.38m on a formula simplification. DAG size of input: 324 DAG size of output: 315 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-22 01:26:27,559 WARN L233 SmtUtils]: Spent 25.12s on a formula simplification that was a NOOP. DAG size: 296 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-22 01:27:26,580 WARN L233 SmtUtils]: Spent 59.02s on a formula simplification. DAG size of input: 323 DAG size of output: 314 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-22 01:27:51,003 WARN L233 SmtUtils]: Spent 24.42s on a formula simplification that was a NOOP. DAG size: 295 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-22 01:27:51,596 INFO L134 LiptonReduction]: Checked pairs total: 11020 [2022-11-22 01:27:51,596 INFO L136 LiptonReduction]: Total number of compositions: 238 [2022-11-22 01:27:51,604 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 68 places, 64 transitions, 133 flow [2022-11-22 01:27:51,642 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 436 states, 285 states have (on average 2.831578947368421) internal successors, (807), 435 states have internal predecessors, (807), 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 01:27:51,664 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 01:27:51,675 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;@5b62ac9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 01:27:51,675 INFO L358 AbstractCegarLoop]: Starting to check reachability of 56 error locations. [2022-11-22 01:27:51,679 INFO L276 IsEmpty]: Start isEmpty. Operand has 436 states, 285 states have (on average 2.831578947368421) internal successors, (807), 435 states have internal predecessors, (807), 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 01:27:51,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2022-11-22 01:27:51,684 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:27:51,685 INFO L195 NwaCegarLoop]: trace histogram [1] [2022-11-22 01:27:51,685 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2022-11-22 01:27:51,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:27:51,691 INFO L85 PathProgramCache]: Analyzing trace with hash 639, now seen corresponding path program 1 times [2022-11-22 01:27:51,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:27:51,702 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018090376] [2022-11-22 01:27:51,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:27:51,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:27:51,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:27:51,836 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 01:27:51,839 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:27:51,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018090376] [2022-11-22 01:27:51,840 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018090376] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:27:51,841 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:27:51,841 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-11-22 01:27:51,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303880042] [2022-11-22 01:27:51,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:27:51,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-22 01:27:51,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:27:51,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-22 01:27:51,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-22 01:27:51,882 INFO L87 Difference]: Start difference. First operand has 436 states, 285 states have (on average 2.831578947368421) internal successors, (807), 435 states have internal predecessors, (807), 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 01:27:52,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:27:52,168 INFO L93 Difference]: Finished difference Result 378 states and 715 transitions. [2022-11-22 01:27:52,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-22 01:27:52,176 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 01:27:52,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:27:52,190 INFO L225 Difference]: With dead ends: 378 [2022-11-22 01:27:52,190 INFO L226 Difference]: Without dead ends: 378 [2022-11-22 01:27:52,191 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 01:27:52,195 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-22 01:27:52,196 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-22 01:27:52,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2022-11-22 01:27:52,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 378. [2022-11-22 01:27:52,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 378 states, 269 states have (on average 2.657992565055762) internal successors, (715), 377 states have internal predecessors, (715), 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 01:27:52,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 715 transitions. [2022-11-22 01:27:52,264 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 715 transitions. Word has length 1 [2022-11-22 01:27:52,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:27:52,265 INFO L495 AbstractCegarLoop]: Abstraction has 378 states and 715 transitions. [2022-11-22 01:27:52,265 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 01:27:52,265 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 715 transitions. [2022-11-22 01:27:52,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-22 01:27:52,266 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:27:52,266 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-22 01:27:52,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-22 01:27:52,267 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2022-11-22 01:27:52,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:27:52,268 INFO L85 PathProgramCache]: Analyzing trace with hash 631261, now seen corresponding path program 1 times [2022-11-22 01:27:52,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:27:52,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055116251] [2022-11-22 01:27:52,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:27:52,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:27:52,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:27:52,970 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 01:27:52,970 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:27:52,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055116251] [2022-11-22 01:27:52,971 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055116251] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:27:52,971 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:27:52,971 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-22 01:27:52,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430593244] [2022-11-22 01:27:52,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:27:52,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:27:52,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:27:52,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:27:52,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:27:52,976 INFO L87 Difference]: Start difference. First operand 378 states and 715 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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 01:27:53,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:27:53,255 INFO L93 Difference]: Finished difference Result 340 states and 641 transitions. [2022-11-22 01:27:53,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:27:53,278 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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 3 [2022-11-22 01:27:53,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:27:53,280 INFO L225 Difference]: With dead ends: 340 [2022-11-22 01:27:53,281 INFO L226 Difference]: Without dead ends: 340 [2022-11-22 01:27:53,281 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 01:27:53,282 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 35 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-22 01:27:53,282 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 5 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-22 01:27:53,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2022-11-22 01:27:53,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 340. [2022-11-22 01:27:53,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 340 states, 251 states have (on average 2.553784860557769) internal successors, (641), 339 states have internal predecessors, (641), 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 01:27:53,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 641 transitions. [2022-11-22 01:27:53,303 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 641 transitions. Word has length 3 [2022-11-22 01:27:53,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:27:53,304 INFO L495 AbstractCegarLoop]: Abstraction has 340 states and 641 transitions. [2022-11-22 01:27:53,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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 01:27:53,304 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 641 transitions. [2022-11-22 01:27:53,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-22 01:27:53,305 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:27:53,305 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-22 01:27:53,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-22 01:27:53,305 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2022-11-22 01:27:53,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:27:53,306 INFO L85 PathProgramCache]: Analyzing trace with hash 631263, now seen corresponding path program 1 times [2022-11-22 01:27:53,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:27:53,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277341778] [2022-11-22 01:27:53,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:27:53,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:27:53,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:27:54,943 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 01:27:54,943 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:27:54,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277341778] [2022-11-22 01:27:54,944 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277341778] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:27:54,944 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:27:54,944 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-22 01:27:54,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382940142] [2022-11-22 01:27:54,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:27:54,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:27:54,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:27:54,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:27:54,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:27:54,947 INFO L87 Difference]: Start difference. First operand 340 states and 641 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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 01:27:55,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:27:55,152 INFO L93 Difference]: Finished difference Result 316 states and 594 transitions. [2022-11-22 01:27:55,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:27:55,153 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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 3 [2022-11-22 01:27:55,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:27:55,154 INFO L225 Difference]: With dead ends: 316 [2022-11-22 01:27:55,155 INFO L226 Difference]: Without dead ends: 316 [2022-11-22 01:27:55,155 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 01:27:55,156 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 21 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-22 01:27:55,156 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 8 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-22 01:27:55,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2022-11-22 01:27:55,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 316. [2022-11-22 01:27:55,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 316 states, 239 states have (on average 2.485355648535565) internal successors, (594), 315 states have internal predecessors, (594), 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 01:27:55,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 594 transitions. [2022-11-22 01:27:55,187 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 594 transitions. Word has length 3 [2022-11-22 01:27:55,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:27:55,188 INFO L495 AbstractCegarLoop]: Abstraction has 316 states and 594 transitions. [2022-11-22 01:27:55,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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 01:27:55,188 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 594 transitions. [2022-11-22 01:27:55,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-22 01:27:55,189 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:27:55,189 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-22 01:27:55,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-22 01:27:55,189 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2022-11-22 01:27:55,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:27:55,191 INFO L85 PathProgramCache]: Analyzing trace with hash 631267, now seen corresponding path program 1 times [2022-11-22 01:27:55,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:27:55,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391019018] [2022-11-22 01:27:55,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:27:55,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:27:55,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:27:55,611 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 01:27:55,611 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:27:55,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391019018] [2022-11-22 01:27:55,611 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391019018] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:27:55,612 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:27:55,612 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-22 01:27:55,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47179542] [2022-11-22 01:27:55,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:27:55,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:27:55,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:27:55,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:27:55,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:27:55,615 INFO L87 Difference]: Start difference. First operand 316 states and 594 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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 01:27:55,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:27:55,878 INFO L93 Difference]: Finished difference Result 314 states and 556 transitions. [2022-11-22 01:27:55,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:27:55,879 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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 3 [2022-11-22 01:27:55,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:27:55,880 INFO L225 Difference]: With dead ends: 314 [2022-11-22 01:27:55,881 INFO L226 Difference]: Without dead ends: 314 [2022-11-22 01:27:55,881 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 01:27:55,882 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 30 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-22 01:27:55,883 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 2 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-22 01:27:55,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2022-11-22 01:27:55,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 284. [2022-11-22 01:27:55,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 216 states have (on average 2.4537037037037037) internal successors, (530), 283 states have internal predecessors, (530), 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 01:27:55,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 530 transitions. [2022-11-22 01:27:55,909 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 530 transitions. Word has length 3 [2022-11-22 01:27:55,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:27:55,910 INFO L495 AbstractCegarLoop]: Abstraction has 284 states and 530 transitions. [2022-11-22 01:27:55,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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 01:27:55,910 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 530 transitions. [2022-11-22 01:27:55,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-22 01:27:55,912 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:27:55,912 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-22 01:27:55,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-22 01:27:55,913 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2022-11-22 01:27:55,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:27:55,919 INFO L85 PathProgramCache]: Analyzing trace with hash 19569479, now seen corresponding path program 1 times [2022-11-22 01:27:55,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:27:55,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712591239] [2022-11-22 01:27:55,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:27:55,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:27:55,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:27:55,980 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 01:27:55,981 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:27:55,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712591239] [2022-11-22 01:27:55,981 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712591239] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:27:55,982 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:27:55,982 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 01:27:55,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671193487] [2022-11-22 01:27:55,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:27:55,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:27:55,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:27:55,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:27:55,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:27:55,984 INFO L87 Difference]: Start difference. First operand 284 states and 530 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:27:56,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:27:56,361 INFO L93 Difference]: Finished difference Result 273 states and 505 transitions. [2022-11-22 01:27:56,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:27:56,362 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-11-22 01:27:56,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:27:56,363 INFO L225 Difference]: With dead ends: 273 [2022-11-22 01:27:56,363 INFO L226 Difference]: Without dead ends: 273 [2022-11-22 01:27:56,364 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:27:56,365 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 12 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-22 01:27:56,365 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 8 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-22 01:27:56,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2022-11-22 01:27:56,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 273. [2022-11-22 01:27:56,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 210 states have (on average 2.4047619047619047) internal successors, (505), 272 states have internal predecessors, (505), 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 01:27:56,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 505 transitions. [2022-11-22 01:27:56,380 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 505 transitions. Word has length 4 [2022-11-22 01:27:56,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:27:56,381 INFO L495 AbstractCegarLoop]: Abstraction has 273 states and 505 transitions. [2022-11-22 01:27:56,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:27:56,381 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 505 transitions. [2022-11-22 01:27:56,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-22 01:27:56,382 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:27:56,382 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-22 01:27:56,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-22 01:27:56,383 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2022-11-22 01:27:56,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:27:56,384 INFO L85 PathProgramCache]: Analyzing trace with hash 19567659, now seen corresponding path program 1 times [2022-11-22 01:27:56,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:27:56,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942137975] [2022-11-22 01:27:56,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:27:56,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:27:56,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:27:57,195 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 01:27:57,195 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:27:57,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942137975] [2022-11-22 01:27:57,196 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942137975] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:27:57,197 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:27:57,197 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-22 01:27:57,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121969601] [2022-11-22 01:27:57,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:27:57,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:27:57,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:27:57,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:27:57,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:27:57,199 INFO L87 Difference]: Start difference. First operand 273 states and 505 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:27:57,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:27:57,476 INFO L93 Difference]: Finished difference Result 268 states and 495 transitions. [2022-11-22 01:27:57,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:27:57,477 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-11-22 01:27:57,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:27:57,478 INFO L225 Difference]: With dead ends: 268 [2022-11-22 01:27:57,478 INFO L226 Difference]: Without dead ends: 268 [2022-11-22 01:27:57,478 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 01:27:57,479 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 14 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-22 01:27:57,480 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 6 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-22 01:27:57,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2022-11-22 01:27:57,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 268. [2022-11-22 01:27:57,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 207 states have (on average 2.391304347826087) internal successors, (495), 267 states have internal predecessors, (495), 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 01:27:57,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 495 transitions. [2022-11-22 01:27:57,488 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 495 transitions. Word has length 4 [2022-11-22 01:27:57,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:27:57,489 INFO L495 AbstractCegarLoop]: Abstraction has 268 states and 495 transitions. [2022-11-22 01:27:57,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:27:57,489 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 495 transitions. [2022-11-22 01:27:57,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-22 01:27:57,490 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:27:57,490 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-22 01:27:57,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-22 01:27:57,490 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2022-11-22 01:27:57,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:27:57,491 INFO L85 PathProgramCache]: Analyzing trace with hash 19569537, now seen corresponding path program 1 times [2022-11-22 01:27:57,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:27:57,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024269497] [2022-11-22 01:27:57,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:27:57,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:27:57,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:27:58,288 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 01:27:58,288 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:27:58,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024269497] [2022-11-22 01:27:58,288 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024269497] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:27:58,289 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:27:58,289 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 01:27:58,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495672316] [2022-11-22 01:27:58,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:27:58,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 01:27:58,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:27:58,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 01:27:58,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-22 01:27:58,290 INFO L87 Difference]: Start difference. First operand 268 states and 495 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:27:58,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:27:58,744 INFO L93 Difference]: Finished difference Result 256 states and 470 transitions. [2022-11-22 01:27:58,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-22 01:27:58,745 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-11-22 01:27:58,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:27:58,746 INFO L225 Difference]: With dead ends: 256 [2022-11-22 01:27:58,746 INFO L226 Difference]: Without dead ends: 256 [2022-11-22 01:27:58,746 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 01:27:58,747 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 25 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-22 01:27:58,747 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 9 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-22 01:27:58,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2022-11-22 01:27:58,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 256. [2022-11-22 01:27:58,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 195 states have (on average 2.41025641025641) internal successors, (470), 255 states have internal predecessors, (470), 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 01:27:58,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 470 transitions. [2022-11-22 01:27:58,756 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 470 transitions. Word has length 4 [2022-11-22 01:27:58,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:27:58,756 INFO L495 AbstractCegarLoop]: Abstraction has 256 states and 470 transitions. [2022-11-22 01:27:58,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:27:58,757 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 470 transitions. [2022-11-22 01:27:58,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-22 01:27:58,757 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:27:58,757 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-22 01:27:58,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-22 01:27:58,758 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2022-11-22 01:27:58,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:27:58,758 INFO L85 PathProgramCache]: Analyzing trace with hash 1626518556, now seen corresponding path program 1 times [2022-11-22 01:27:58,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:27:58,759 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803858421] [2022-11-22 01:27:58,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:27:58,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:27:58,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:27:58,985 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 01:27:58,986 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:27:58,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803858421] [2022-11-22 01:27:58,986 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [803858421] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:27:58,986 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:27:58,986 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-22 01:27:58,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942332291] [2022-11-22 01:27:58,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:27:58,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:27:58,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:27:58,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:27:58,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:27:58,988 INFO L87 Difference]: Start difference. First operand 256 states and 470 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 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 01:27:59,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:27:59,203 INFO L93 Difference]: Finished difference Result 225 states and 410 transitions. [2022-11-22 01:27:59,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:27:59,204 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 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 01:27:59,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:27:59,205 INFO L225 Difference]: With dead ends: 225 [2022-11-22 01:27:59,205 INFO L226 Difference]: Without dead ends: 225 [2022-11-22 01:27:59,206 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 01:27:59,206 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 28 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-22 01:27:59,206 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 5 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-22 01:27:59,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2022-11-22 01:27:59,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 225. [2022-11-22 01:27:59,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 179 states have (on average 2.2905027932960893) internal successors, (410), 224 states have internal predecessors, (410), 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 01:27:59,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 410 transitions. [2022-11-22 01:27:59,217 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 410 transitions. Word has length 6 [2022-11-22 01:27:59,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:27:59,217 INFO L495 AbstractCegarLoop]: Abstraction has 225 states and 410 transitions. [2022-11-22 01:27:59,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 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 01:27:59,217 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 410 transitions. [2022-11-22 01:27:59,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-22 01:27:59,218 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:27:59,218 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-22 01:27:59,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-22 01:27:59,223 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2022-11-22 01:27:59,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:27:59,224 INFO L85 PathProgramCache]: Analyzing trace with hash 1626518554, now seen corresponding path program 1 times [2022-11-22 01:27:59,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:27:59,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946778846] [2022-11-22 01:27:59,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:27:59,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:27:59,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:28:00,760 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 01:28:00,761 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:28:00,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946778846] [2022-11-22 01:28:00,761 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946778846] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:28:00,761 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:28:00,762 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 01:28:00,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883523688] [2022-11-22 01:28:00,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:28:00,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 01:28:00,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:28:00,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 01:28:00,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:28:00,767 INFO L87 Difference]: Start difference. First operand 225 states and 410 transitions. Second operand has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 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 01:28:01,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:28:01,294 INFO L93 Difference]: Finished difference Result 198 states and 357 transitions. [2022-11-22 01:28:01,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 01:28:01,295 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 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 01:28:01,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:28:01,296 INFO L225 Difference]: With dead ends: 198 [2022-11-22 01:28:01,296 INFO L226 Difference]: Without dead ends: 198 [2022-11-22 01:28:01,296 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-11-22 01:28:01,297 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 50 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-22 01:28:01,297 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 8 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-22 01:28:01,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2022-11-22 01:28:01,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 198. [2022-11-22 01:28:01,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 164 states have (on average 2.176829268292683) internal successors, (357), 197 states have internal predecessors, (357), 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 01:28:01,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 357 transitions. [2022-11-22 01:28:01,305 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 357 transitions. Word has length 6 [2022-11-22 01:28:01,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:28:01,306 INFO L495 AbstractCegarLoop]: Abstraction has 198 states and 357 transitions. [2022-11-22 01:28:01,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 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 01:28:01,306 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 357 transitions. [2022-11-22 01:28:01,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-22 01:28:01,308 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:28:01,308 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-22 01:28:01,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-22 01:28:01,308 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2022-11-22 01:28:01,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:28:01,309 INFO L85 PathProgramCache]: Analyzing trace with hash 1626519075, now seen corresponding path program 1 times [2022-11-22 01:28:01,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:28:01,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862076932] [2022-11-22 01:28:01,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:28:01,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:28:01,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:28:01,442 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 01:28:01,442 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:28:01,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862076932] [2022-11-22 01:28:01,442 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862076932] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:28:01,442 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:28:01,443 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 01:28:01,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8055629] [2022-11-22 01:28:01,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:28:01,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:28:01,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:28:01,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:28:01,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:28:01,444 INFO L87 Difference]: Start difference. First operand 198 states and 357 transitions. Second operand has 3 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 01:28:01,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:28:01,946 INFO L93 Difference]: Finished difference Result 207 states and 347 transitions. [2022-11-22 01:28:01,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:28:01,947 INFO L78 Accepts]: Start accepts. Automaton has has 3 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 01:28:01,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:28:01,948 INFO L225 Difference]: With dead ends: 207 [2022-11-22 01:28:01,948 INFO L226 Difference]: Without dead ends: 205 [2022-11-22 01:28:01,949 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 01:28:01,949 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 15 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-22 01:28:01,950 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 16 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-22 01:28:01,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2022-11-22 01:28:01,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 182. [2022-11-22 01:28:01,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 148 states have (on average 2.1621621621621623) internal successors, (320), 181 states have internal predecessors, (320), 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 01:28:01,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 320 transitions. [2022-11-22 01:28:01,956 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 320 transitions. Word has length 6 [2022-11-22 01:28:01,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:28:01,957 INFO L495 AbstractCegarLoop]: Abstraction has 182 states and 320 transitions. [2022-11-22 01:28:01,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 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 01:28:01,957 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 320 transitions. [2022-11-22 01:28:01,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-22 01:28:01,957 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:28:01,958 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:28:01,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-22 01:28:01,958 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t_funErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2022-11-22 01:28:01,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:28:01,958 INFO L85 PathProgramCache]: Analyzing trace with hash -1117531978, now seen corresponding path program 1 times [2022-11-22 01:28:01,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:28:01,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813880126] [2022-11-22 01:28:01,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:28:01,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:28:02,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:28:02,821 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 01:28:02,822 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:28:02,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813880126] [2022-11-22 01:28:02,822 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813880126] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:28:02,822 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:28:02,822 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-22 01:28:02,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753406249] [2022-11-22 01:28:02,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:28:02,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-22 01:28:02,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:28:02,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-22 01:28:02,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-22 01:28:02,824 INFO L87 Difference]: Start difference. First operand 182 states and 320 transitions. Second operand has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:28:03,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:28:03,652 INFO L93 Difference]: Finished difference Result 158 states and 258 transitions. [2022-11-22 01:28:03,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 01:28:03,653 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-22 01:28:03,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:28:03,655 INFO L225 Difference]: With dead ends: 158 [2022-11-22 01:28:03,655 INFO L226 Difference]: Without dead ends: 157 [2022-11-22 01:28:03,655 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-11-22 01:28:03,656 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 41 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-22 01:28:03,656 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 14 Invalid, 217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 205 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-22 01:28:03,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2022-11-22 01:28:03,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 149. [2022-11-22 01:28:03,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 123 states have (on average 2.032520325203252) internal successors, (250), 148 states have internal predecessors, (250), 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 01:28:03,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 250 transitions. [2022-11-22 01:28:03,662 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 250 transitions. Word has length 7 [2022-11-22 01:28:03,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:28:03,662 INFO L495 AbstractCegarLoop]: Abstraction has 149 states and 250 transitions. [2022-11-22 01:28:03,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:28:03,662 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 250 transitions. [2022-11-22 01:28:03,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-22 01:28:03,663 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:28:03,663 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:28:03,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-22 01:28:03,663 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2022-11-22 01:28:03,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:28:03,664 INFO L85 PathProgramCache]: Analyzing trace with hash -1117534926, now seen corresponding path program 1 times [2022-11-22 01:28:03,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:28:03,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688647902] [2022-11-22 01:28:03,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:28:03,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:28:03,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:28:03,771 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 01:28:03,772 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:28:03,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688647902] [2022-11-22 01:28:03,772 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688647902] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:28:03,772 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:28:03,772 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-22 01:28:03,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060464610] [2022-11-22 01:28:03,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:28:03,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:28:03,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:28:03,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:28:03,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:28:03,774 INFO L87 Difference]: Start difference. First operand 149 states and 250 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:28:04,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:28:04,015 INFO L93 Difference]: Finished difference Result 133 states and 209 transitions. [2022-11-22 01:28:04,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:28:04,016 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-22 01:28:04,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:28:04,017 INFO L225 Difference]: With dead ends: 133 [2022-11-22 01:28:04,017 INFO L226 Difference]: Without dead ends: 133 [2022-11-22 01:28:04,017 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 01:28:04,018 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 18 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-22 01:28:04,018 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 6 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-22 01:28:04,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2022-11-22 01:28:04,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 127. [2022-11-22 01:28:04,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 106 states have (on average 1.9433962264150944) internal successors, (206), 126 states have internal predecessors, (206), 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 01:28:04,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 206 transitions. [2022-11-22 01:28:04,022 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 206 transitions. Word has length 7 [2022-11-22 01:28:04,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:28:04,023 INFO L495 AbstractCegarLoop]: Abstraction has 127 states and 206 transitions. [2022-11-22 01:28:04,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:28:04,023 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 206 transitions. [2022-11-22 01:28:04,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-22 01:28:04,023 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:28:04,023 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:28:04,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-22 01:28:04,024 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2022-11-22 01:28:04,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:28:04,024 INFO L85 PathProgramCache]: Analyzing trace with hash -1117532571, now seen corresponding path program 1 times [2022-11-22 01:28:04,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:28:04,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314023245] [2022-11-22 01:28:04,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:28:04,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:28:04,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:28:04,921 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 01:28:04,921 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:28:04,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314023245] [2022-11-22 01:28:04,921 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314023245] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:28:04,921 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:28:04,921 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 01:28:04,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812302467] [2022-11-22 01:28:04,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:28:04,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 01:28:04,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:28:04,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 01:28:04,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:28:04,923 INFO L87 Difference]: Start difference. First operand 127 states and 206 transitions. Second operand has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:28:05,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:28:05,287 INFO L93 Difference]: Finished difference Result 125 states and 199 transitions. [2022-11-22 01:28:05,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 01:28:05,287 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-22 01:28:05,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:28:05,288 INFO L225 Difference]: With dead ends: 125 [2022-11-22 01:28:05,288 INFO L226 Difference]: Without dead ends: 125 [2022-11-22 01:28:05,288 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-11-22 01:28:05,289 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 53 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-22 01:28:05,289 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 9 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-22 01:28:05,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2022-11-22 01:28:05,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 123. [2022-11-22 01:28:05,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 104 states have (on average 1.9038461538461537) internal successors, (198), 122 states have internal predecessors, (198), 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 01:28:05,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 198 transitions. [2022-11-22 01:28:05,294 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 198 transitions. Word has length 7 [2022-11-22 01:28:05,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:28:05,294 INFO L495 AbstractCegarLoop]: Abstraction has 123 states and 198 transitions. [2022-11-22 01:28:05,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:28:05,295 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 198 transitions. [2022-11-22 01:28:05,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-22 01:28:05,295 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:28:05,295 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:28:05,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-22 01:28:05,296 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2022-11-22 01:28:05,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:28:05,296 INFO L85 PathProgramCache]: Analyzing trace with hash -1117532570, now seen corresponding path program 1 times [2022-11-22 01:28:05,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:28:05,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674402656] [2022-11-22 01:28:05,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:28:05,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:28:05,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:28:06,075 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 01:28:06,075 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:28:06,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674402656] [2022-11-22 01:28:06,076 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674402656] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:28:06,076 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:28:06,076 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 01:28:06,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425453982] [2022-11-22 01:28:06,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:28:06,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 01:28:06,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:28:06,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 01:28:06,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:28:06,078 INFO L87 Difference]: Start difference. First operand 123 states and 198 transitions. Second operand has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:28:06,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:28:06,477 INFO L93 Difference]: Finished difference Result 145 states and 214 transitions. [2022-11-22 01:28:06,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 01:28:06,477 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-22 01:28:06,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:28:06,478 INFO L225 Difference]: With dead ends: 145 [2022-11-22 01:28:06,478 INFO L226 Difference]: Without dead ends: 145 [2022-11-22 01:28:06,479 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-11-22 01:28:06,479 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 46 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-22 01:28:06,480 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 11 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-22 01:28:06,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2022-11-22 01:28:06,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 119. [2022-11-22 01:28:06,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 102 states have (on average 1.8627450980392157) internal successors, (190), 118 states have internal predecessors, (190), 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 01:28:06,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 190 transitions. [2022-11-22 01:28:06,484 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 190 transitions. Word has length 7 [2022-11-22 01:28:06,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:28:06,484 INFO L495 AbstractCegarLoop]: Abstraction has 119 states and 190 transitions. [2022-11-22 01:28:06,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:28:06,484 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 190 transitions. [2022-11-22 01:28:06,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-22 01:28:06,485 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:28:06,485 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:28:06,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-22 01:28:06,485 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2022-11-22 01:28:06,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:28:06,486 INFO L85 PathProgramCache]: Analyzing trace with hash -206190857, now seen corresponding path program 1 times [2022-11-22 01:28:06,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:28:06,486 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78759918] [2022-11-22 01:28:06,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:28:06,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:28:06,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:28:07,863 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 01:28:07,864 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:28:07,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78759918] [2022-11-22 01:28:07,864 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78759918] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:28:07,864 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:28:07,864 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 01:28:07,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226566351] [2022-11-22 01:28:07,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:28:07,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-22 01:28:07,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:28:07,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-22 01:28:07,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-11-22 01:28:07,865 INFO L87 Difference]: Start difference. First operand 119 states and 190 transitions. Second operand has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:28:08,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:28:08,916 INFO L93 Difference]: Finished difference Result 117 states and 187 transitions. [2022-11-22 01:28:08,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 01:28:08,917 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-22 01:28:08,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:28:08,918 INFO L225 Difference]: With dead ends: 117 [2022-11-22 01:28:08,918 INFO L226 Difference]: Without dead ends: 117 [2022-11-22 01:28:08,918 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2022-11-22 01:28:08,919 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 71 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-22 01:28:08,919 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 9 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-22 01:28:08,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2022-11-22 01:28:08,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2022-11-22 01:28:08,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 101 states have (on average 1.8514851485148516) internal successors, (187), 116 states have internal predecessors, (187), 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 01:28:08,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 187 transitions. [2022-11-22 01:28:08,922 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 187 transitions. Word has length 9 [2022-11-22 01:28:08,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:28:08,923 INFO L495 AbstractCegarLoop]: Abstraction has 117 states and 187 transitions. [2022-11-22 01:28:08,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:28:08,923 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 187 transitions. [2022-11-22 01:28:08,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-22 01:28:08,924 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:28:08,924 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:28:08,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-22 01:28:08,925 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2022-11-22 01:28:08,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:28:08,925 INFO L85 PathProgramCache]: Analyzing trace with hash -206190856, now seen corresponding path program 1 times [2022-11-22 01:28:08,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:28:08,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896989750] [2022-11-22 01:28:08,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:28:08,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:28:08,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:28:09,831 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 01:28:09,832 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:28:09,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896989750] [2022-11-22 01:28:09,832 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1896989750] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:28:09,832 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:28:09,832 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 01:28:09,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746934946] [2022-11-22 01:28:09,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:28:09,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-22 01:28:09,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:28:09,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-22 01:28:09,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-11-22 01:28:09,834 INFO L87 Difference]: Start difference. First operand 117 states and 187 transitions. Second operand has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:28:10,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:28:10,491 INFO L93 Difference]: Finished difference Result 143 states and 209 transitions. [2022-11-22 01:28:10,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-22 01:28:10,492 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-22 01:28:10,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:28:10,493 INFO L225 Difference]: With dead ends: 143 [2022-11-22 01:28:10,493 INFO L226 Difference]: Without dead ends: 143 [2022-11-22 01:28:10,493 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2022-11-22 01:28:10,494 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 64 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-22 01:28:10,494 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 13 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-22 01:28:10,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2022-11-22 01:28:10,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 115. [2022-11-22 01:28:10,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 100 states have (on average 1.84) internal successors, (184), 114 states have internal predecessors, (184), 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 01:28:10,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 184 transitions. [2022-11-22 01:28:10,498 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 184 transitions. Word has length 9 [2022-11-22 01:28:10,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:28:10,498 INFO L495 AbstractCegarLoop]: Abstraction has 115 states and 184 transitions. [2022-11-22 01:28:10,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:28:10,498 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 184 transitions. [2022-11-22 01:28:10,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-22 01:28:10,499 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:28:10,499 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:28:10,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-22 01:28:10,499 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2022-11-22 01:28:10,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:28:10,500 INFO L85 PathProgramCache]: Analyzing trace with hash 1619892036, now seen corresponding path program 1 times [2022-11-22 01:28:10,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:28:10,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922502292] [2022-11-22 01:28:10,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:28:10,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:28:10,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-22 01:28:10,546 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-22 01:28:10,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-22 01:28:10,602 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-22 01:28:10,602 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-22 01:28:10,603 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (55 of 56 remaining) [2022-11-22 01:28:10,605 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (54 of 56 remaining) [2022-11-22 01:28:10,605 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (53 of 56 remaining) [2022-11-22 01:28:10,606 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (52 of 56 remaining) [2022-11-22 01:28:10,609 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (51 of 56 remaining) [2022-11-22 01:28:10,609 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (50 of 56 remaining) [2022-11-22 01:28:10,609 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (49 of 56 remaining) [2022-11-22 01:28:10,609 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (48 of 56 remaining) [2022-11-22 01:28:10,609 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (47 of 56 remaining) [2022-11-22 01:28:10,610 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (46 of 56 remaining) [2022-11-22 01:28:10,610 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (45 of 56 remaining) [2022-11-22 01:28:10,610 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (44 of 56 remaining) [2022-11-22 01:28:10,610 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (43 of 56 remaining) [2022-11-22 01:28:10,610 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (42 of 56 remaining) [2022-11-22 01:28:10,610 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (41 of 56 remaining) [2022-11-22 01:28:10,611 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (40 of 56 remaining) [2022-11-22 01:28:10,611 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (39 of 56 remaining) [2022-11-22 01:28:10,611 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (38 of 56 remaining) [2022-11-22 01:28:10,611 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (37 of 56 remaining) [2022-11-22 01:28:10,611 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (36 of 56 remaining) [2022-11-22 01:28:10,611 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (35 of 56 remaining) [2022-11-22 01:28:10,612 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (34 of 56 remaining) [2022-11-22 01:28:10,612 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (33 of 56 remaining) [2022-11-22 01:28:10,612 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (32 of 56 remaining) [2022-11-22 01:28:10,612 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (31 of 56 remaining) [2022-11-22 01:28:10,612 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 56 remaining) [2022-11-22 01:28:10,613 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (29 of 56 remaining) [2022-11-22 01:28:10,613 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 56 remaining) [2022-11-22 01:28:10,613 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 56 remaining) [2022-11-22 01:28:10,613 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 56 remaining) [2022-11-22 01:28:10,613 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 56 remaining) [2022-11-22 01:28:10,613 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (24 of 56 remaining) [2022-11-22 01:28:10,614 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 56 remaining) [2022-11-22 01:28:10,614 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 56 remaining) [2022-11-22 01:28:10,614 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 56 remaining) [2022-11-22 01:28:10,614 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 56 remaining) [2022-11-22 01:28:10,614 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 56 remaining) [2022-11-22 01:28:10,614 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 56 remaining) [2022-11-22 01:28:10,615 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 56 remaining) [2022-11-22 01:28:10,615 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 56 remaining) [2022-11-22 01:28:10,616 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 56 remaining) [2022-11-22 01:28:10,616 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 56 remaining) [2022-11-22 01:28:10,616 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 56 remaining) [2022-11-22 01:28:10,616 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 56 remaining) [2022-11-22 01:28:10,616 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 56 remaining) [2022-11-22 01:28:10,616 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 56 remaining) [2022-11-22 01:28:10,617 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 56 remaining) [2022-11-22 01:28:10,617 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 56 remaining) [2022-11-22 01:28:10,617 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 56 remaining) [2022-11-22 01:28:10,618 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 56 remaining) [2022-11-22 01:28:10,618 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 56 remaining) [2022-11-22 01:28:10,619 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 56 remaining) [2022-11-22 01:28:10,619 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 56 remaining) [2022-11-22 01:28:10,619 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 56 remaining) [2022-11-22 01:28:10,619 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 56 remaining) [2022-11-22 01:28:10,620 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 56 remaining) [2022-11-22 01:28:10,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-22 01:28:10,622 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:28:10,629 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-22 01:28:10,629 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-22 01:28:10,676 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 01:28:10 BasicIcfg [2022-11-22 01:28:10,676 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-22 01:28:10,677 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-22 01:28:10,677 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-22 01:28:10,677 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-22 01:28:10,678 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:20:00" (3/4) ... [2022-11-22 01:28:10,681 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-22 01:28:10,681 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-22 01:28:10,682 INFO L158 Benchmark]: Toolchain (without parser) took 492491.69ms. Allocated memory was 190.8MB in the beginning and 352.3MB in the end (delta: 161.5MB). Free memory was 143.1MB in the beginning and 174.6MB in the end (delta: -31.5MB). Peak memory consumption was 132.0MB. Max. memory is 16.1GB. [2022-11-22 01:28:10,682 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 144.7MB. Free memory is still 85.6MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-22 01:28:10,682 INFO L158 Benchmark]: CACSL2BoogieTranslator took 890.53ms. Allocated memory is still 190.8MB. Free memory was 142.5MB in the beginning and 104.7MB in the end (delta: 37.7MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. [2022-11-22 01:28:10,683 INFO L158 Benchmark]: Boogie Procedure Inliner took 97.63ms. Allocated memory is still 190.8MB. Free memory was 104.1MB in the beginning and 102.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-22 01:28:10,683 INFO L158 Benchmark]: Boogie Preprocessor took 61.24ms. Allocated memory is still 190.8MB. Free memory was 102.0MB in the beginning and 99.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-22 01:28:10,683 INFO L158 Benchmark]: RCFGBuilder took 833.17ms. Allocated memory is still 190.8MB. Free memory was 99.9MB in the beginning and 144.5MB in the end (delta: -44.7MB). Peak memory consumption was 17.4MB. Max. memory is 16.1GB. [2022-11-22 01:28:10,684 INFO L158 Benchmark]: TraceAbstraction took 490598.45ms. Allocated memory was 190.8MB in the beginning and 352.3MB in the end (delta: 161.5MB). Free memory was 143.5MB in the beginning and 175.7MB in the end (delta: -32.2MB). Peak memory consumption was 129.3MB. Max. memory is 16.1GB. [2022-11-22 01:28:10,684 INFO L158 Benchmark]: Witness Printer took 4.13ms. Allocated memory is still 352.3MB. Free memory is still 174.6MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-22 01:28:10,685 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 144.7MB. Free memory is still 85.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 890.53ms. Allocated memory is still 190.8MB. Free memory was 142.5MB in the beginning and 104.7MB in the end (delta: 37.7MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 97.63ms. Allocated memory is still 190.8MB. Free memory was 104.1MB in the beginning and 102.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 61.24ms. Allocated memory is still 190.8MB. Free memory was 102.0MB in the beginning and 99.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 833.17ms. Allocated memory is still 190.8MB. Free memory was 99.9MB in the beginning and 144.5MB in the end (delta: -44.7MB). Peak memory consumption was 17.4MB. Max. memory is 16.1GB. * TraceAbstraction took 490598.45ms. Allocated memory was 190.8MB in the beginning and 352.3MB in the end (delta: 161.5MB). Free memory was 143.5MB in the beginning and 175.7MB in the end (delta: -32.2MB). Peak memory consumption was 129.3MB. Max. memory is 16.1GB. * Witness Printer took 4.13ms. Allocated memory is still 352.3MB. Free memory is still 174.6MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 471.3s, 175 PlacesBefore, 68 PlacesAfterwards, 171 TransitionsBefore, 64 TransitionsAfterwards, 2590 CoEnabledTransitionPairs, 8 FixpointIterations, 168 TrivialSequentialCompositions, 70 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 238 TotalNumberOfCompositions, 11020 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 4358, independent: 3920, independent conditional: 0, independent unconditional: 3920, dependent: 438, dependent conditional: 0, dependent unconditional: 438, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1928, independent: 1850, independent conditional: 0, independent unconditional: 1850, dependent: 78, dependent conditional: 0, dependent unconditional: 78, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1928, independent: 1784, independent conditional: 0, independent unconditional: 1784, dependent: 144, dependent conditional: 0, dependent unconditional: 144, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 144, independent: 66, independent conditional: 0, independent unconditional: 66, dependent: 78, dependent conditional: 0, dependent unconditional: 78, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 347, independent: 108, independent conditional: 0, independent unconditional: 108, dependent: 239, dependent conditional: 0, dependent unconditional: 239, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 4358, independent: 2070, independent conditional: 0, independent unconditional: 2070, dependent: 360, dependent conditional: 0, dependent unconditional: 360, unknown: 1928, unknown conditional: 0, unknown unconditional: 1928] , Statistics on independence cache: Total cache size (in pairs): 300, Positive cache size: 250, Positive conditional cache size: 0, Positive unconditional cache size: 250, Negative cache size: 50, Negative conditional cache size: 0, Negative unconditional cache size: 50, 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 - UnprovableResult [Line: 1242]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 1242. Possible FailurePath: [L1223-L1226] 0 struct s { int datum; struct s *next; } *A, *B; [L1231] 0 pthread_mutex_t A_mutex = { { 0, 0, 0, 0, 0, { { 0, 0 } } } }; [L1232] 0 pthread_mutex_t B_mutex = { { 0, 0, 0, 0, 0, { { 0, 0 } } } }; [L1243] 0 pthread_t t1; [L1244] 0 struct s *p = malloc(sizeof(struct s)); [L1245] CALL 0 init(p,9) [L1228] 0 p -> datum = x [L1229] 0 p -> next = ((void *)0) [L1245] RET 0 init(p,9) [L1246] 0 A = malloc(sizeof(struct s)) [L1247] CALL 0 init(A,3) [L1228] 0 p -> datum = x [L1229] 0 p -> next = ((void *)0) [L1247] RET 0 init(A,3) [L1248] 0 A->next = p [L1249] 0 B = malloc(sizeof(struct s)) [L1250] CALL 0 init(B,5) [L1228] 0 p -> datum = x [L1229] 0 p -> next = ((void *)0) [L1250] RET 0 init(B,5) [L1251] 0 p = malloc(sizeof(struct s)) [L1252] CALL 0 init(p,9) [L1228] 0 p -> datum = x [L1229] 0 p -> next = ((void *)0) [L1252] RET 0 init(p,9) [L1253] 0 B->next = p [L1254] FCALL, FORK 0 pthread_create(&t1, ((void *)0), t_fun, ((void *)0)) VAL [A={-2:0}, A_mutex={1:0}, arg={0:0}, B={11:0}, B_mutex={2:0}, p={-4:0}, pthread_create(&t1, ((void *)0), t_fun, ((void *)0))=-1, t1={13:0}] [L1256] EXPR 0 A->next [L1256] 0 p = A->next [L1257] 0 p->datum [L1260] EXPR 0 B->next [L1260] 0 p = B->next [L1261] 0 p->datum VAL [A={-2:0}, A_mutex={1:0}, arg={0:0}, B={11:0}, B_mutex={2:0}, p={-4:0}, t1={13:0}] [L1263] 0 return 0; VAL [\result=0, A={-2:0}, A_mutex={1:0}, arg={0:0}, B={11:0}, B_mutex={2:0}, p={-4:0}, t1={13:0}] [L1263] 0 return 0; - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1254]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 209 locations, 56 error locations. Started 1 CEGAR loops. OverallTime: 490.4s, OverallIterations: 17, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 7.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 471.4s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 523 SdHoareTripleChecker+Valid, 6.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 523 mSDsluCounter, 135 SdHoareTripleChecker+Invalid, 6.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 47 mSDsCounter, 60 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1354 IncrementalHoareTripleChecker+Invalid, 1414 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 60 mSolverCounterUnsat, 88 mSDtfsCounter, 1354 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 46 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=436occurred in iteration=0, InterpolantAutomatonStates: 64, 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, 16 MinimizatonAttempts, 123 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 10.3s InterpolantComputationTime, 96 NumberOfCodeBlocks, 96 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 70 ConstructedInterpolants, 0 QuantifiedInterpolants, 1310 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 16 InterpolantComputations, 16 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 RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-22 01:28:10,720 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19813d26-277a-4b9a-8d1e-43728c475fa4/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 Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19813d26-277a-4b9a-8d1e-43728c475fa4/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19813d26-277a-4b9a-8d1e-43728c475fa4/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_19813d26-277a-4b9a-8d1e-43728c475fa4/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19813d26-277a-4b9a-8d1e-43728c475fa4/bin/utaipan-g80aRyZoba/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/goblint-regression/09-regions_04-list2_nr.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19813d26-277a-4b9a-8d1e-43728c475fa4/bin/utaipan-g80aRyZoba/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19813d26-277a-4b9a-8d1e-43728c475fa4/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 22e95fa30ebde8538537e9926c639bef97cab57433fef0bd6d73df06023fa7d1 --- 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 01:28:13,267 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 01:28:13,269 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 01:28:13,312 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 01:28:13,312 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 01:28:13,316 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 01:28:13,319 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 01:28:13,323 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 01:28:13,325 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 01:28:13,331 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 01:28:13,332 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 01:28:13,335 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 01:28:13,335 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 01:28:13,337 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 01:28:13,339 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 01:28:13,346 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 01:28:13,347 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 01:28:13,348 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 01:28:13,350 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 01:28:13,357 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 01:28:13,358 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 01:28:13,363 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 01:28:13,365 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 01:28:13,366 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 01:28:13,374 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 01:28:13,374 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 01:28:13,375 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 01:28:13,377 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 01:28:13,377 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 01:28:13,378 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 01:28:13,379 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 01:28:13,380 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 01:28:13,382 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 01:28:13,383 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 01:28:13,396 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 01:28:13,396 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 01:28:13,397 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 01:28:13,397 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 01:28:13,398 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 01:28:13,399 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 01:28:13,400 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 01:28:13,401 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19813d26-277a-4b9a-8d1e-43728c475fa4/bin/utaipan-g80aRyZoba/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2022-11-22 01:28:13,446 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 01:28:13,447 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 01:28:13,448 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 01:28:13,448 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 01:28:13,449 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 01:28:13,449 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 01:28:13,450 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 01:28:13,450 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 01:28:13,450 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 01:28:13,450 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 01:28:13,451 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 01:28:13,452 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 01:28:13,453 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-22 01:28:13,453 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-22 01:28:13,453 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 01:28:13,453 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-22 01:28:13,454 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-22 01:28:13,454 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-22 01:28:13,454 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-22 01:28:13,454 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 01:28:13,455 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-22 01:28:13,455 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-22 01:28:13,455 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-22 01:28:13,455 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 01:28:13,456 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-22 01:28:13,456 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-22 01:28:13,456 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-22 01:28:13,456 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-22 01:28:13,456 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 01:28:13,457 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 01:28:13,457 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-22 01:28:13,457 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 01:28:13,458 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 01:28:13,458 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 01:28:13,458 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 01:28:13,458 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-22 01:28:13,459 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-22 01:28:13,459 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 01:28:13,459 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-22 01:28:13,459 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_19813d26-277a-4b9a-8d1e-43728c475fa4/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19813d26-277a-4b9a-8d1e-43728c475fa4/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 22e95fa30ebde8538537e9926c639bef97cab57433fef0bd6d73df06023fa7d1 [2022-11-22 01:28:13,877 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 01:28:13,901 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 01:28:13,904 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 01:28:13,905 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 01:28:13,906 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 01:28:13,908 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19813d26-277a-4b9a-8d1e-43728c475fa4/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/goblint-regression/09-regions_04-list2_nr.i [2022-11-22 01:28:17,224 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 01:28:17,510 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 01:28:17,523 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19813d26-277a-4b9a-8d1e-43728c475fa4/sv-benchmarks/c/goblint-regression/09-regions_04-list2_nr.i [2022-11-22 01:28:17,549 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19813d26-277a-4b9a-8d1e-43728c475fa4/bin/utaipan-g80aRyZoba/data/f57852e85/3100abb22c06471f9dfba4923d4fbc9e/FLAGcaaebc39d [2022-11-22 01:28:17,578 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19813d26-277a-4b9a-8d1e-43728c475fa4/bin/utaipan-g80aRyZoba/data/f57852e85/3100abb22c06471f9dfba4923d4fbc9e [2022-11-22 01:28:17,580 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 01:28:17,582 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 01:28:17,586 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 01:28:17,586 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 01:28:17,591 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 01:28:17,592 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:28:17" (1/1) ... [2022-11-22 01:28:17,593 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54edaffe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:28:17, skipping insertion in model container [2022-11-22 01:28:17,593 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:28:17" (1/1) ... [2022-11-22 01:28:17,601 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 01:28:17,665 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 01:28:18,276 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 01:28:18,295 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 01:28:18,379 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 01:28:18,482 INFO L208 MainTranslator]: Completed translation [2022-11-22 01:28:18,483 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:28:18 WrapperNode [2022-11-22 01:28:18,483 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 01:28:18,484 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 01:28:18,484 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 01:28:18,484 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 01:28:18,491 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:28:18" (1/1) ... [2022-11-22 01:28:18,514 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:28:18" (1/1) ... [2022-11-22 01:28:18,539 INFO L138 Inliner]: procedures = 369, calls = 45, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 87 [2022-11-22 01:28:18,539 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 01:28:18,540 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 01:28:18,540 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 01:28:18,540 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 01:28:18,550 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:28:18" (1/1) ... [2022-11-22 01:28:18,550 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:28:18" (1/1) ... [2022-11-22 01:28:18,555 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:28:18" (1/1) ... [2022-11-22 01:28:18,556 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:28:18" (1/1) ... [2022-11-22 01:28:18,565 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:28:18" (1/1) ... [2022-11-22 01:28:18,567 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:28:18" (1/1) ... [2022-11-22 01:28:18,569 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:28:18" (1/1) ... [2022-11-22 01:28:18,571 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:28:18" (1/1) ... [2022-11-22 01:28:18,575 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 01:28:18,576 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 01:28:18,576 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 01:28:18,577 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 01:28:18,578 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:28:18" (1/1) ... [2022-11-22 01:28:18,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 01:28:18,602 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19813d26-277a-4b9a-8d1e-43728c475fa4/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:28:18,614 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19813d26-277a-4b9a-8d1e-43728c475fa4/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 01:28:18,616 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19813d26-277a-4b9a-8d1e-43728c475fa4/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 01:28:18,648 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-22 01:28:18,648 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-22 01:28:18,648 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-22 01:28:18,649 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-22 01:28:18,649 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-22 01:28:18,649 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2022-11-22 01:28:18,649 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-22 01:28:18,649 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-22 01:28:18,649 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-22 01:28:18,650 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-22 01:28:18,650 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-11-22 01:28:18,650 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-11-22 01:28:18,650 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 01:28:18,650 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 01:28:18,652 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-22 01:28:18,861 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 01:28:18,863 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 01:28:19,539 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 01:28:19,555 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 01:28:19,556 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-22 01:28:19,558 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:28:19 BoogieIcfgContainer [2022-11-22 01:28:19,559 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 01:28:19,561 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 01:28:19,562 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 01:28:19,565 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 01:28:19,566 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:28:17" (1/3) ... [2022-11-22 01:28:19,568 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e1af857 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:28:19, skipping insertion in model container [2022-11-22 01:28:19,568 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:28:18" (2/3) ... [2022-11-22 01:28:19,570 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e1af857 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:28:19, skipping insertion in model container [2022-11-22 01:28:19,571 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:28:19" (3/3) ... [2022-11-22 01:28:19,572 INFO L112 eAbstractionObserver]: Analyzing ICFG 09-regions_04-list2_nr.i [2022-11-22 01:28:19,590 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 01:28:19,591 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 43 error locations. [2022-11-22 01:28:19,591 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-22 01:28:19,685 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-22 01:28:19,727 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-22 01:28:19,758 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 176 places, 172 transitions, 349 flow [2022-11-22 01:28:19,770 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 176 places, 172 transitions, 349 flow [2022-11-22 01:28:19,772 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 176 places, 172 transitions, 349 flow [2022-11-22 01:28:19,883 INFO L130 PetriNetUnfolder]: 0/171 cut-off events. [2022-11-22 01:28:19,885 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-22 01:28:19,889 INFO L83 FinitePrefix]: Finished finitePrefix Result has 175 conditions, 171 events. 0/171 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 219 event pairs, 0 based on Foata normal form. 0/128 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2022-11-22 01:28:19,892 INFO L119 LiptonReduction]: Number of co-enabled transitions 2590 [2022-11-22 01:29:29,241 WARN L233 SmtUtils]: Spent 5.17s on a formula simplification that was a NOOP. DAG size: 98 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-22 01:29:34,761 WARN L233 SmtUtils]: Spent 5.52s on a formula simplification that was a NOOP. DAG size: 94 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-22 01:29:48,482 WARN L233 SmtUtils]: Spent 5.11s on a formula simplification that was a NOOP. DAG size: 94 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-22 01:30:28,213 WARN L233 SmtUtils]: Spent 19.77s on a formula simplification that was a NOOP. DAG size: 113 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-22 01:30:45,262 WARN L233 SmtUtils]: Spent 17.05s on a formula simplification that was a NOOP. DAG size: 109 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-22 01:31:08,221 WARN L233 SmtUtils]: Spent 22.96s on a formula simplification that was a NOOP. DAG size: 113 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-22 01:31:30,309 WARN L233 SmtUtils]: Spent 22.09s on a formula simplification that was a NOOP. DAG size: 109 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-22 01:31:53,744 WARN L233 SmtUtils]: Spent 20.46s on a formula simplification. DAG size of input: 104 DAG size of output: 103 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-22 01:32:01,733 WARN L233 SmtUtils]: Spent 7.99s on a formula simplification that was a NOOP. DAG size: 99 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-22 01:32:23,109 WARN L233 SmtUtils]: Spent 21.37s on a formula simplification. DAG size of input: 104 DAG size of output: 103 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-22 01:32:29,557 WARN L233 SmtUtils]: Spent 6.45s on a formula simplification that was a NOOP. DAG size: 99 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-22 01:33:01,732 WARN L233 SmtUtils]: Spent 24.69s on a formula simplification that was a NOOP. DAG size: 119 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-22 01:33:17,683 WARN L233 SmtUtils]: Spent 15.95s on a formula simplification that was a NOOP. DAG size: 119 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-22 01:33:41,375 WARN L233 SmtUtils]: Spent 23.69s on a formula simplification that was a NOOP. DAG size: 119 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-22 01:34:09,200 WARN L233 SmtUtils]: Spent 27.82s on a formula simplification that was a NOOP. DAG size: 119 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-22 01:34:16,697 WARN L233 SmtUtils]: Spent 7.50s on a formula simplification that was a NOOP. DAG size: 104 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-22 01:34:25,546 WARN L233 SmtUtils]: Spent 8.85s on a formula simplification that was a NOOP. DAG size: 104 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-22 01:34:34,014 WARN L233 SmtUtils]: Spent 8.47s on a formula simplification that was a NOOP. DAG size: 104 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-22 01:34:40,687 WARN L233 SmtUtils]: Spent 6.67s on a formula simplification that was a NOOP. DAG size: 104 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-22 01:34:48,367 WARN L233 SmtUtils]: Spent 6.31s on a formula simplification that was a NOOP. DAG size: 100 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition)