./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread/queue_longer.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version e04fb08f 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_869d8882-4dde-4a69-b78f-a1d0b299bb5b/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_869d8882-4dde-4a69-b78f-a1d0b299bb5b/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_869d8882-4dde-4a69-b78f-a1d0b299bb5b/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_869d8882-4dde-4a69-b78f-a1d0b299bb5b/bin/uautomizer-tPACEb0tL8/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread/queue_longer.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_869d8882-4dde-4a69-b78f-a1d0b299bb5b/bin/uautomizer-tPACEb0tL8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_869d8882-4dde-4a69-b78f-a1d0b299bb5b/bin/uautomizer-tPACEb0tL8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9f874a9872f93f025fac23ebed37f94a1f3b80bd0133ea4d7e298577c4fec427 --- 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-e04fb08 [2022-11-16 11:12:57,956 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 11:12:57,960 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 11:12:58,005 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 11:12:58,006 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 11:12:58,007 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 11:12:58,009 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 11:12:58,011 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 11:12:58,013 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 11:12:58,015 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 11:12:58,016 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 11:12:58,017 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 11:12:58,018 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 11:12:58,019 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 11:12:58,021 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 11:12:58,022 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 11:12:58,023 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 11:12:58,025 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 11:12:58,027 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 11:12:58,030 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 11:12:58,032 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 11:12:58,033 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 11:12:58,035 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 11:12:58,036 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 11:12:58,041 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 11:12:58,041 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 11:12:58,042 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 11:12:58,043 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 11:12:58,044 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 11:12:58,045 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 11:12:58,046 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 11:12:58,047 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 11:12:58,048 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 11:12:58,049 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 11:12:58,050 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 11:12:58,051 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 11:12:58,052 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 11:12:58,052 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 11:12:58,053 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 11:12:58,054 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 11:12:58,055 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 11:12:58,056 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_869d8882-4dde-4a69-b78f-a1d0b299bb5b/bin/uautomizer-tPACEb0tL8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-11-16 11:12:58,093 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 11:12:58,098 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 11:12:58,100 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 11:12:58,100 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 11:12:58,102 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 11:12:58,102 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 11:12:58,103 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 11:12:58,103 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 11:12:58,103 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 11:12:58,104 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 11:12:58,105 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 11:12:58,105 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 11:12:58,106 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 11:12:58,106 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 11:12:58,106 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 11:12:58,106 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-16 11:12:58,107 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-16 11:12:58,107 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-16 11:12:58,107 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 11:12:58,107 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-16 11:12:58,108 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 11:12:58,108 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 11:12:58,108 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 11:12:58,109 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 11:12:58,109 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 11:12:58,109 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:12:58,111 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 11:12:58,111 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 11:12:58,112 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 11:12:58,112 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 11:12:58,112 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_869d8882-4dde-4a69-b78f-a1d0b299bb5b/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_869d8882-4dde-4a69-b78f-a1d0b299bb5b/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9f874a9872f93f025fac23ebed37f94a1f3b80bd0133ea4d7e298577c4fec427 [2022-11-16 11:12:58,449 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 11:12:58,489 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 11:12:58,494 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 11:12:58,496 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 11:12:58,497 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 11:12:58,500 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_869d8882-4dde-4a69-b78f-a1d0b299bb5b/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/pthread/queue_longer.i [2022-11-16 11:12:58,587 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_869d8882-4dde-4a69-b78f-a1d0b299bb5b/bin/uautomizer-tPACEb0tL8/data/09850f01c/3f91b597841a45beb1808d8adcd80f44/FLAG3fc6357cb [2022-11-16 11:12:59,380 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 11:12:59,382 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_869d8882-4dde-4a69-b78f-a1d0b299bb5b/sv-benchmarks/c/pthread/queue_longer.i [2022-11-16 11:12:59,409 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_869d8882-4dde-4a69-b78f-a1d0b299bb5b/bin/uautomizer-tPACEb0tL8/data/09850f01c/3f91b597841a45beb1808d8adcd80f44/FLAG3fc6357cb [2022-11-16 11:12:59,428 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_869d8882-4dde-4a69-b78f-a1d0b299bb5b/bin/uautomizer-tPACEb0tL8/data/09850f01c/3f91b597841a45beb1808d8adcd80f44 [2022-11-16 11:12:59,430 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 11:12:59,431 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 11:12:59,433 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 11:12:59,433 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 11:12:59,437 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 11:12:59,437 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:12:59" (1/1) ... [2022-11-16 11:12:59,439 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a70e187 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:12:59, skipping insertion in model container [2022-11-16 11:12:59,439 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:12:59" (1/1) ... [2022-11-16 11:12:59,446 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 11:12:59,486 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:13:00,051 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_869d8882-4dde-4a69-b78f-a1d0b299bb5b/sv-benchmarks/c/pthread/queue_longer.i[43296,43309] [2022-11-16 11:13:00,057 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_869d8882-4dde-4a69-b78f-a1d0b299bb5b/sv-benchmarks/c/pthread/queue_longer.i[43503,43516] [2022-11-16 11:13:00,061 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_869d8882-4dde-4a69-b78f-a1d0b299bb5b/sv-benchmarks/c/pthread/queue_longer.i[43783,43796] [2022-11-16 11:13:00,067 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:13:00,079 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 11:13:00,133 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_869d8882-4dde-4a69-b78f-a1d0b299bb5b/sv-benchmarks/c/pthread/queue_longer.i[43296,43309] [2022-11-16 11:13:00,136 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_869d8882-4dde-4a69-b78f-a1d0b299bb5b/sv-benchmarks/c/pthread/queue_longer.i[43503,43516] [2022-11-16 11:13:00,139 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_869d8882-4dde-4a69-b78f-a1d0b299bb5b/sv-benchmarks/c/pthread/queue_longer.i[43783,43796] [2022-11-16 11:13:00,143 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:13:00,209 INFO L208 MainTranslator]: Completed translation [2022-11-16 11:13:00,210 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:13:00 WrapperNode [2022-11-16 11:13:00,210 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 11:13:00,211 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 11:13:00,211 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 11:13:00,212 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 11:13:00,221 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:13:00" (1/1) ... [2022-11-16 11:13:00,256 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:13:00" (1/1) ... [2022-11-16 11:13:00,316 INFO L138 Inliner]: procedures = 274, calls = 62, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 243 [2022-11-16 11:13:00,317 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 11:13:00,318 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 11:13:00,318 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 11:13:00,318 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 11:13:00,328 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:13:00" (1/1) ... [2022-11-16 11:13:00,328 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:13:00" (1/1) ... [2022-11-16 11:13:00,333 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:13:00" (1/1) ... [2022-11-16 11:13:00,334 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:13:00" (1/1) ... [2022-11-16 11:13:00,346 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:13:00" (1/1) ... [2022-11-16 11:13:00,350 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:13:00" (1/1) ... [2022-11-16 11:13:00,353 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:13:00" (1/1) ... [2022-11-16 11:13:00,355 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:13:00" (1/1) ... [2022-11-16 11:13:00,359 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 11:13:00,360 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 11:13:00,361 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 11:13:00,361 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 11:13:00,367 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:13:00" (1/1) ... [2022-11-16 11:13:00,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:13:00,391 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_869d8882-4dde-4a69-b78f-a1d0b299bb5b/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:13:00,406 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_869d8882-4dde-4a69-b78f-a1d0b299bb5b/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 11:13:00,443 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_869d8882-4dde-4a69-b78f-a1d0b299bb5b/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 11:13:00,480 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2022-11-16 11:13:00,480 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2022-11-16 11:13:00,481 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2022-11-16 11:13:00,483 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2022-11-16 11:13:00,483 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 11:13:00,483 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 11:13:00,483 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 11:13:00,484 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 11:13:00,485 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-16 11:13:00,485 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 11:13:00,485 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 11:13:00,485 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 11:13:00,486 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 11:13:00,488 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-16 11:13:00,717 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 11:13:00,719 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 11:13:01,642 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 11:13:01,655 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 11:13:01,655 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-16 11:13:01,658 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:13:01 BoogieIcfgContainer [2022-11-16 11:13:01,659 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 11:13:01,661 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 11:13:01,662 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 11:13:01,666 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 11:13:01,666 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 11:12:59" (1/3) ... [2022-11-16 11:13:01,667 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1671f80a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:13:01, skipping insertion in model container [2022-11-16 11:13:01,667 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:13:00" (2/3) ... [2022-11-16 11:13:01,668 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1671f80a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:13:01, skipping insertion in model container [2022-11-16 11:13:01,668 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:13:01" (3/3) ... [2022-11-16 11:13:01,670 INFO L112 eAbstractionObserver]: Analyzing ICFG queue_longer.i [2022-11-16 11:13:01,693 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 11:13:01,693 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 80 error locations. [2022-11-16 11:13:01,694 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 11:13:01,864 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-16 11:13:01,911 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-16 11:13:01,930 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 346 places, 354 transitions, 724 flow [2022-11-16 11:13:01,933 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 346 places, 354 transitions, 724 flow [2022-11-16 11:13:01,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 346 places, 354 transitions, 724 flow [2022-11-16 11:13:02,175 INFO L130 PetriNetUnfolder]: 15/352 cut-off events. [2022-11-16 11:13:02,175 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-16 11:13:02,187 INFO L83 FinitePrefix]: Finished finitePrefix Result has 361 conditions, 352 events. 15/352 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 768 event pairs, 0 based on Foata normal form. 0/257 useless extension candidates. Maximal degree in co-relation 253. Up to 2 conditions per place. [2022-11-16 11:13:02,206 INFO L119 LiptonReduction]: Number of co-enabled transitions 30160 [2022-11-16 11:13:32,718 INFO L134 LiptonReduction]: Checked pairs total: 102888 [2022-11-16 11:13:32,718 INFO L136 LiptonReduction]: Total number of compositions: 575 [2022-11-16 11:13:32,733 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 139 places, 142 transitions, 300 flow [2022-11-16 11:13:33,202 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 9813 states, 7156 states have (on average 3.938932364449413) internal successors, (28187), 9812 states have internal predecessors, (28187), 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) [2022-11-16 11:13:33,232 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:13:33,243 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;@1e6a7e92, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:13:33,244 INFO L358 AbstractCegarLoop]: Starting to check reachability of 142 error locations. [2022-11-16 11:13:33,278 INFO L276 IsEmpty]: Start isEmpty. Operand has 9813 states, 7156 states have (on average 3.938932364449413) internal successors, (28187), 9812 states have internal predecessors, (28187), 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) [2022-11-16 11:13:33,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2022-11-16 11:13:33,292 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:13:33,293 INFO L195 NwaCegarLoop]: trace histogram [1] [2022-11-16 11:13:33,294 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2022-11-16 11:13:33,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:13:33,305 INFO L85 PathProgramCache]: Analyzing trace with hash 1567, now seen corresponding path program 1 times [2022-11-16 11:13:33,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:13:33,318 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485513589] [2022-11-16 11:13:33,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:13:33,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:13:33,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:33,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:13:33,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:13:33,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485513589] [2022-11-16 11:13:33,481 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485513589] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:13:33,481 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:13:33,482 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-11-16 11:13:33,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524287817] [2022-11-16 11:13:33,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:13:33,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-16 11:13:33,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:13:33,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-16 11:13:33,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 11:13:33,545 INFO L87 Difference]: Start difference. First operand has 9813 states, 7156 states have (on average 3.938932364449413) internal successors, (28187), 9812 states have internal predecessors, (28187), 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) [2022-11-16 11:13:33,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:13:33,852 INFO L93 Difference]: Finished difference Result 4512 states and 12954 transitions. [2022-11-16 11:13:33,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-16 11:13:33,863 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1 [2022-11-16 11:13:33,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:13:33,925 INFO L225 Difference]: With dead ends: 4512 [2022-11-16 11:13:33,925 INFO L226 Difference]: Without dead ends: 4512 [2022-11-16 11:13:33,926 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 [2022-11-16 11:13:33,929 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:13:33,930 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 8 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 11:13:33,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4512 states. [2022-11-16 11:13:34,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4512 to 4512. [2022-11-16 11:13:34,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4512 states, 3943 states have (on average 3.2853157494293685) internal successors, (12954), 4511 states have internal predecessors, (12954), 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) [2022-11-16 11:13:34,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4512 states to 4512 states and 12954 transitions. [2022-11-16 11:13:34,215 INFO L78 Accepts]: Start accepts. Automaton has 4512 states and 12954 transitions. Word has length 1 [2022-11-16 11:13:34,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:13:34,216 INFO L495 AbstractCegarLoop]: Abstraction has 4512 states and 12954 transitions. [2022-11-16 11:13:34,216 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) [2022-11-16 11:13:34,216 INFO L276 IsEmpty]: Start isEmpty. Operand 4512 states and 12954 transitions. [2022-11-16 11:13:34,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-16 11:13:34,217 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:13:34,217 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-16 11:13:34,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 11:13:34,218 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2022-11-16 11:13:34,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:13:34,219 INFO L85 PathProgramCache]: Analyzing trace with hash 1583870, now seen corresponding path program 1 times [2022-11-16 11:13:34,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:13:34,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545359507] [2022-11-16 11:13:34,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:13:34,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:13:34,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:34,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:13:34,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:13:34,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545359507] [2022-11-16 11:13:34,787 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545359507] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:13:34,788 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:13:34,788 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 11:13:34,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817930573] [2022-11-16 11:13:34,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:13:34,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:13:34,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:13:34,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:13:34,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:13:34,791 INFO L87 Difference]: Start difference. First operand 4512 states and 12954 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) [2022-11-16 11:13:35,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:13:35,103 INFO L93 Difference]: Finished difference Result 3956 states and 11392 transitions. [2022-11-16 11:13:35,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:13:35,104 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 [2022-11-16 11:13:35,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:13:35,132 INFO L225 Difference]: With dead ends: 3956 [2022-11-16 11:13:35,133 INFO L226 Difference]: Without dead ends: 3956 [2022-11-16 11:13:35,133 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 [2022-11-16 11:13:35,135 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 83 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:13:35,135 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 5 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 11:13:35,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3956 states. [2022-11-16 11:13:35,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3956 to 3956. [2022-11-16 11:13:35,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3956 states, 3550 states have (on average 3.209014084507042) internal successors, (11392), 3955 states have internal predecessors, (11392), 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) [2022-11-16 11:13:35,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3956 states to 3956 states and 11392 transitions. [2022-11-16 11:13:35,291 INFO L78 Accepts]: Start accepts. Automaton has 3956 states and 11392 transitions. Word has length 3 [2022-11-16 11:13:35,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:13:35,293 INFO L495 AbstractCegarLoop]: Abstraction has 3956 states and 11392 transitions. [2022-11-16 11:13:35,293 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) [2022-11-16 11:13:35,293 INFO L276 IsEmpty]: Start isEmpty. Operand 3956 states and 11392 transitions. [2022-11-16 11:13:35,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-16 11:13:35,294 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:13:35,294 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-16 11:13:35,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 11:13:35,295 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2022-11-16 11:13:35,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:13:35,295 INFO L85 PathProgramCache]: Analyzing trace with hash 1583871, now seen corresponding path program 1 times [2022-11-16 11:13:35,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:13:35,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462643029] [2022-11-16 11:13:35,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:13:35,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:13:35,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:35,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:13:35,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:13:35,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462643029] [2022-11-16 11:13:35,394 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462643029] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:13:35,395 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:13:35,395 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 11:13:35,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632266308] [2022-11-16 11:13:35,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:13:35,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:13:35,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:13:35,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:13:35,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:13:35,397 INFO L87 Difference]: Start difference. First operand 3956 states and 11392 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) [2022-11-16 11:13:35,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:13:35,591 INFO L93 Difference]: Finished difference Result 3520 states and 10165 transitions. [2022-11-16 11:13:35,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:13:35,592 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 [2022-11-16 11:13:35,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:13:35,612 INFO L225 Difference]: With dead ends: 3520 [2022-11-16 11:13:35,612 INFO L226 Difference]: Without dead ends: 3520 [2022-11-16 11:13:35,613 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 [2022-11-16 11:13:35,614 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 78 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:13:35,614 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 5 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 11:13:35,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3520 states. [2022-11-16 11:13:35,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3520 to 3520. [2022-11-16 11:13:35,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3520 states, 3230 states have (on average 3.1470588235294117) internal successors, (10165), 3519 states have internal predecessors, (10165), 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) [2022-11-16 11:13:35,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3520 states to 3520 states and 10165 transitions. [2022-11-16 11:13:35,793 INFO L78 Accepts]: Start accepts. Automaton has 3520 states and 10165 transitions. Word has length 3 [2022-11-16 11:13:35,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:13:35,794 INFO L495 AbstractCegarLoop]: Abstraction has 3520 states and 10165 transitions. [2022-11-16 11:13:35,794 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) [2022-11-16 11:13:35,795 INFO L276 IsEmpty]: Start isEmpty. Operand 3520 states and 10165 transitions. [2022-11-16 11:13:35,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-16 11:13:35,795 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:13:35,796 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-16 11:13:35,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 11:13:35,799 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2022-11-16 11:13:35,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:13:35,800 INFO L85 PathProgramCache]: Analyzing trace with hash 1583753, now seen corresponding path program 1 times [2022-11-16 11:13:35,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:13:35,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127593991] [2022-11-16 11:13:35,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:13:35,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:13:35,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:35,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:13:35,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:13:35,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127593991] [2022-11-16 11:13:35,908 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [127593991] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:13:35,908 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:13:35,908 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 11:13:35,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682342223] [2022-11-16 11:13:35,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:13:35,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:13:35,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:13:35,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:13:35,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:13:35,911 INFO L87 Difference]: Start difference. First operand 3520 states and 10165 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) [2022-11-16 11:13:36,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:13:36,097 INFO L93 Difference]: Finished difference Result 3460 states and 10039 transitions. [2022-11-16 11:13:36,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:13:36,098 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 [2022-11-16 11:13:36,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:13:36,127 INFO L225 Difference]: With dead ends: 3460 [2022-11-16 11:13:36,128 INFO L226 Difference]: Without dead ends: 3460 [2022-11-16 11:13:36,128 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 [2022-11-16 11:13:36,129 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 76 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:13:36,130 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 5 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 11:13:36,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3460 states. [2022-11-16 11:13:36,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3460 to 3460. [2022-11-16 11:13:36,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3460 states, 3189 states have (on average 3.148008780181875) internal successors, (10039), 3459 states have internal predecessors, (10039), 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) [2022-11-16 11:13:36,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3460 states to 3460 states and 10039 transitions. [2022-11-16 11:13:36,267 INFO L78 Accepts]: Start accepts. Automaton has 3460 states and 10039 transitions. Word has length 3 [2022-11-16 11:13:36,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:13:36,267 INFO L495 AbstractCegarLoop]: Abstraction has 3460 states and 10039 transitions. [2022-11-16 11:13:36,268 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) [2022-11-16 11:13:36,268 INFO L276 IsEmpty]: Start isEmpty. Operand 3460 states and 10039 transitions. [2022-11-16 11:13:36,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-16 11:13:36,268 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:13:36,268 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-16 11:13:36,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 11:13:36,269 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2022-11-16 11:13:36,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:13:36,270 INFO L85 PathProgramCache]: Analyzing trace with hash 1583754, now seen corresponding path program 1 times [2022-11-16 11:13:36,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:13:36,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237692618] [2022-11-16 11:13:36,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:13:36,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:13:36,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:36,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:13:36,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:13:36,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237692618] [2022-11-16 11:13:36,361 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237692618] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:13:36,362 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:13:36,362 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 11:13:36,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922754319] [2022-11-16 11:13:36,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:13:36,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:13:36,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:13:36,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:13:36,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:13:36,364 INFO L87 Difference]: Start difference. First operand 3460 states and 10039 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) [2022-11-16 11:13:36,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:13:36,542 INFO L93 Difference]: Finished difference Result 3400 states and 9913 transitions. [2022-11-16 11:13:36,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:13:36,543 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 [2022-11-16 11:13:36,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:13:36,566 INFO L225 Difference]: With dead ends: 3400 [2022-11-16 11:13:36,566 INFO L226 Difference]: Without dead ends: 3400 [2022-11-16 11:13:36,566 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 [2022-11-16 11:13:36,567 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 74 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:13:36,568 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 5 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 11:13:36,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3400 states. [2022-11-16 11:13:36,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3400 to 3400. [2022-11-16 11:13:36,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3400 states, 3148 states have (on average 3.1489834815756037) internal successors, (9913), 3399 states have internal predecessors, (9913), 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) [2022-11-16 11:13:36,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3400 states to 3400 states and 9913 transitions. [2022-11-16 11:13:36,841 INFO L78 Accepts]: Start accepts. Automaton has 3400 states and 9913 transitions. Word has length 3 [2022-11-16 11:13:36,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:13:36,842 INFO L495 AbstractCegarLoop]: Abstraction has 3400 states and 9913 transitions. [2022-11-16 11:13:36,842 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) [2022-11-16 11:13:36,842 INFO L276 IsEmpty]: Start isEmpty. Operand 3400 states and 9913 transitions. [2022-11-16 11:13:36,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-16 11:13:36,843 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:13:36,843 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-16 11:13:36,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 11:13:36,843 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2022-11-16 11:13:36,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:13:36,844 INFO L85 PathProgramCache]: Analyzing trace with hash 49096720, now seen corresponding path program 1 times [2022-11-16 11:13:36,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:13:36,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756761404] [2022-11-16 11:13:36,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:13:36,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:13:36,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:38,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:13:38,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:13:38,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756761404] [2022-11-16 11:13:38,607 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756761404] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:13:38,607 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:13:38,607 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 11:13:38,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335665929] [2022-11-16 11:13:38,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:13:38,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:13:38,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:13:38,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:13:38,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:13:38,609 INFO L87 Difference]: Start difference. First operand 3400 states and 9913 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) [2022-11-16 11:13:39,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:13:39,129 INFO L93 Difference]: Finished difference Result 3399 states and 9911 transitions. [2022-11-16 11:13:39,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:13:39,131 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 [2022-11-16 11:13:39,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:13:39,164 INFO L225 Difference]: With dead ends: 3399 [2022-11-16 11:13:39,165 INFO L226 Difference]: Without dead ends: 3399 [2022-11-16 11:13:39,165 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:13:39,166 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 1 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-16 11:13:39,167 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 12 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-16 11:13:39,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3399 states. [2022-11-16 11:13:39,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3399 to 3399. [2022-11-16 11:13:39,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3399 states, 3147 states have (on average 3.1493485859548778) internal successors, (9911), 3398 states have internal predecessors, (9911), 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) [2022-11-16 11:13:39,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3399 states to 3399 states and 9911 transitions. [2022-11-16 11:13:39,285 INFO L78 Accepts]: Start accepts. Automaton has 3399 states and 9911 transitions. Word has length 4 [2022-11-16 11:13:39,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:13:39,286 INFO L495 AbstractCegarLoop]: Abstraction has 3399 states and 9911 transitions. [2022-11-16 11:13:39,286 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) [2022-11-16 11:13:39,286 INFO L276 IsEmpty]: Start isEmpty. Operand 3399 states and 9911 transitions. [2022-11-16 11:13:39,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-16 11:13:39,287 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:13:39,288 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-16 11:13:39,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 11:13:39,288 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2022-11-16 11:13:39,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:13:39,289 INFO L85 PathProgramCache]: Analyzing trace with hash 1522021029, now seen corresponding path program 1 times [2022-11-16 11:13:39,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:13:39,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393780235] [2022-11-16 11:13:39,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:13:39,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:13:39,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:39,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:13:39,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:13:39,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393780235] [2022-11-16 11:13:39,479 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393780235] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:13:39,479 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:13:39,479 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:13:39,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083935195] [2022-11-16 11:13:39,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:13:39,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:13:39,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:13:39,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:13:39,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:13:39,482 INFO L87 Difference]: Start difference. First operand 3399 states and 9911 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:13:39,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:13:39,655 INFO L93 Difference]: Finished difference Result 2580 states and 7292 transitions. [2022-11-16 11:13:39,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:13:39,656 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-16 11:13:39,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:13:39,669 INFO L225 Difference]: With dead ends: 2580 [2022-11-16 11:13:39,670 INFO L226 Difference]: Without dead ends: 2580 [2022-11-16 11:13:39,670 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:13:39,671 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 145 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:13:39,672 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 5 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 11:13:39,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2580 states. [2022-11-16 11:13:39,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2580 to 2580. [2022-11-16 11:13:39,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2580 states, 2412 states have (on average 3.0232172470978442) internal successors, (7292), 2579 states have internal predecessors, (7292), 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) [2022-11-16 11:13:39,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2580 states to 2580 states and 7292 transitions. [2022-11-16 11:13:39,755 INFO L78 Accepts]: Start accepts. Automaton has 2580 states and 7292 transitions. Word has length 5 [2022-11-16 11:13:39,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:13:39,755 INFO L495 AbstractCegarLoop]: Abstraction has 2580 states and 7292 transitions. [2022-11-16 11:13:39,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:13:39,756 INFO L276 IsEmpty]: Start isEmpty. Operand 2580 states and 7292 transitions. [2022-11-16 11:13:39,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-16 11:13:39,757 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:13:39,757 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-16 11:13:39,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-16 11:13:39,757 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2022-11-16 11:13:39,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:13:39,758 INFO L85 PathProgramCache]: Analyzing trace with hash 1522021030, now seen corresponding path program 1 times [2022-11-16 11:13:39,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:13:39,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732972131] [2022-11-16 11:13:39,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:13:39,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:13:39,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:39,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:13:39,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:13:39,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732972131] [2022-11-16 11:13:39,873 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732972131] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:13:39,873 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:13:39,873 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:13:39,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806087856] [2022-11-16 11:13:39,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:13:39,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:13:39,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:13:39,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:13:39,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:13:39,877 INFO L87 Difference]: Start difference. First operand 2580 states and 7292 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:13:40,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:13:40,017 INFO L93 Difference]: Finished difference Result 1761 states and 4673 transitions. [2022-11-16 11:13:40,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:13:40,018 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-16 11:13:40,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:13:40,027 INFO L225 Difference]: With dead ends: 1761 [2022-11-16 11:13:40,027 INFO L226 Difference]: Without dead ends: 1761 [2022-11-16 11:13:40,027 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:13:40,030 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 143 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:13:40,030 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 5 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 11:13:40,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1761 states. [2022-11-16 11:13:40,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1761 to 1761. [2022-11-16 11:13:40,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1761 states, 1677 states have (on average 2.7865235539654143) internal successors, (4673), 1760 states have internal predecessors, (4673), 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) [2022-11-16 11:13:40,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1761 states to 1761 states and 4673 transitions. [2022-11-16 11:13:40,084 INFO L78 Accepts]: Start accepts. Automaton has 1761 states and 4673 transitions. Word has length 5 [2022-11-16 11:13:40,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:13:40,085 INFO L495 AbstractCegarLoop]: Abstraction has 1761 states and 4673 transitions. [2022-11-16 11:13:40,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:13:40,085 INFO L276 IsEmpty]: Start isEmpty. Operand 1761 states and 4673 transitions. [2022-11-16 11:13:40,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-16 11:13:40,086 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:13:40,086 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-16 11:13:40,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 11:13:40,088 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2022-11-16 11:13:40,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:13:40,089 INFO L85 PathProgramCache]: Analyzing trace with hash 1522031030, now seen corresponding path program 1 times [2022-11-16 11:13:40,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:13:40,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283615263] [2022-11-16 11:13:40,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:13:40,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:13:40,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:40,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:13:40,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:13:40,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283615263] [2022-11-16 11:13:40,688 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283615263] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:13:40,688 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:13:40,689 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:13:40,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633491264] [2022-11-16 11:13:40,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:13:40,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:13:40,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:13:40,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:13:40,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:13:40,691 INFO L87 Difference]: Start difference. First operand 1761 states and 4673 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:13:40,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:13:40,932 INFO L93 Difference]: Finished difference Result 1818 states and 4842 transitions. [2022-11-16 11:13:40,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:13:40,933 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-16 11:13:40,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:13:40,940 INFO L225 Difference]: With dead ends: 1818 [2022-11-16 11:13:40,941 INFO L226 Difference]: Without dead ends: 1818 [2022-11-16 11:13:40,941 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:13:40,942 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 15 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:13:40,943 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 16 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 205 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 11:13:40,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1818 states. [2022-11-16 11:13:40,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1818 to 1798. [2022-11-16 11:13:40,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1798 states, 1714 states have (on average 2.7829638273045507) internal successors, (4770), 1797 states have internal predecessors, (4770), 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) [2022-11-16 11:13:40,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1798 states to 1798 states and 4770 transitions. [2022-11-16 11:13:40,996 INFO L78 Accepts]: Start accepts. Automaton has 1798 states and 4770 transitions. Word has length 5 [2022-11-16 11:13:40,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:13:41,000 INFO L495 AbstractCegarLoop]: Abstraction has 1798 states and 4770 transitions. [2022-11-16 11:13:41,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:13:41,001 INFO L276 IsEmpty]: Start isEmpty. Operand 1798 states and 4770 transitions. [2022-11-16 11:13:41,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-16 11:13:41,002 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:13:41,002 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-16 11:13:41,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-16 11:13:41,002 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2022-11-16 11:13:41,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:13:41,003 INFO L85 PathProgramCache]: Analyzing trace with hash 1521999576, now seen corresponding path program 1 times [2022-11-16 11:13:41,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:13:41,003 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229599883] [2022-11-16 11:13:41,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:13:41,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:13:41,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:41,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:13:41,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:13:41,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229599883] [2022-11-16 11:13:41,130 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229599883] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:13:41,130 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:13:41,130 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:13:41,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997319292] [2022-11-16 11:13:41,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:13:41,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:13:41,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:13:41,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:13:41,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:13:41,132 INFO L87 Difference]: Start difference. First operand 1798 states and 4770 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:13:41,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:13:41,336 INFO L93 Difference]: Finished difference Result 1622 states and 4318 transitions. [2022-11-16 11:13:41,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:13:41,336 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-16 11:13:41,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:13:41,344 INFO L225 Difference]: With dead ends: 1622 [2022-11-16 11:13:41,344 INFO L226 Difference]: Without dead ends: 1622 [2022-11-16 11:13:41,344 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 [2022-11-16 11:13:41,345 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 132 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:13:41,346 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 7 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 11:13:41,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1622 states. [2022-11-16 11:13:41,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1622 to 1622. [2022-11-16 11:13:41,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1622 states, 1566 states have (on average 2.7573435504469987) internal successors, (4318), 1621 states have internal predecessors, (4318), 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) [2022-11-16 11:13:41,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1622 states to 1622 states and 4318 transitions. [2022-11-16 11:13:41,396 INFO L78 Accepts]: Start accepts. Automaton has 1622 states and 4318 transitions. Word has length 5 [2022-11-16 11:13:41,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:13:41,396 INFO L495 AbstractCegarLoop]: Abstraction has 1622 states and 4318 transitions. [2022-11-16 11:13:41,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:13:41,397 INFO L276 IsEmpty]: Start isEmpty. Operand 1622 states and 4318 transitions. [2022-11-16 11:13:41,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-16 11:13:41,399 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:13:41,399 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:13:41,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-16 11:13:41,399 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2022-11-16 11:13:41,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:13:41,400 INFO L85 PathProgramCache]: Analyzing trace with hash -1921524417, now seen corresponding path program 1 times [2022-11-16 11:13:41,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:13:41,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931918083] [2022-11-16 11:13:41,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:13:41,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:13:41,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:41,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:13:41,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:13:41,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931918083] [2022-11-16 11:13:41,511 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931918083] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:13:41,512 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:13:41,512 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 11:13:41,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32793623] [2022-11-16 11:13:41,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:13:41,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:13:41,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:13:41,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:13:41,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:13:41,513 INFO L87 Difference]: Start difference. First operand 1622 states and 4318 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) [2022-11-16 11:13:41,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:13:41,696 INFO L93 Difference]: Finished difference Result 1250 states and 3250 transitions. [2022-11-16 11:13:41,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:13:41,697 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 [2022-11-16 11:13:41,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:13:41,702 INFO L225 Difference]: With dead ends: 1250 [2022-11-16 11:13:41,702 INFO L226 Difference]: Without dead ends: 1246 [2022-11-16 11:13:41,703 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 [2022-11-16 11:13:41,703 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 46 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:13:41,704 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 13 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 11:13:41,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1246 states. [2022-11-16 11:13:41,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1246 to 1208. [2022-11-16 11:13:41,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1208 states, 1171 states have (on average 2.71733561058924) internal successors, (3182), 1207 states have internal predecessors, (3182), 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) [2022-11-16 11:13:41,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1208 states to 1208 states and 3182 transitions. [2022-11-16 11:13:41,741 INFO L78 Accepts]: Start accepts. Automaton has 1208 states and 3182 transitions. Word has length 7 [2022-11-16 11:13:41,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:13:41,742 INFO L495 AbstractCegarLoop]: Abstraction has 1208 states and 3182 transitions. [2022-11-16 11:13:41,742 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) [2022-11-16 11:13:41,742 INFO L276 IsEmpty]: Start isEmpty. Operand 1208 states and 3182 transitions. [2022-11-16 11:13:41,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-16 11:13:41,743 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:13:41,743 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:13:41,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-16 11:13:41,744 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2022-11-16 11:13:41,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:13:41,744 INFO L85 PathProgramCache]: Analyzing trace with hash 1636194671, now seen corresponding path program 1 times [2022-11-16 11:13:41,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:13:41,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842586404] [2022-11-16 11:13:41,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:13:41,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:13:41,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:42,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:13:42,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:13:42,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842586404] [2022-11-16 11:13:42,332 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842586404] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:13:42,332 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:13:42,332 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:13:42,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619716758] [2022-11-16 11:13:42,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:13:42,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:13:42,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:13:42,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:13:42,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:13:42,334 INFO L87 Difference]: Start difference. First operand 1208 states and 3182 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:13:42,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:13:42,613 INFO L93 Difference]: Finished difference Result 1207 states and 3179 transitions. [2022-11-16 11:13:42,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 11:13:42,614 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-16 11:13:42,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:13:42,619 INFO L225 Difference]: With dead ends: 1207 [2022-11-16 11:13:42,619 INFO L226 Difference]: Without dead ends: 1207 [2022-11-16 11:13:42,620 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:13:42,620 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 3 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 11:13:42,621 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 22 Invalid, 262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 11:13:42,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1207 states. [2022-11-16 11:13:42,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1207 to 1207. [2022-11-16 11:13:42,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1207 states, 1170 states have (on average 2.717094017094017) internal successors, (3179), 1206 states have internal predecessors, (3179), 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) [2022-11-16 11:13:42,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1207 states to 1207 states and 3179 transitions. [2022-11-16 11:13:42,659 INFO L78 Accepts]: Start accepts. Automaton has 1207 states and 3179 transitions. Word has length 10 [2022-11-16 11:13:42,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:13:42,660 INFO L495 AbstractCegarLoop]: Abstraction has 1207 states and 3179 transitions. [2022-11-16 11:13:42,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:13:42,660 INFO L276 IsEmpty]: Start isEmpty. Operand 1207 states and 3179 transitions. [2022-11-16 11:13:42,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-16 11:13:42,667 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:13:42,668 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:13:42,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-16 11:13:42,668 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2022-11-16 11:13:42,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:13:42,669 INFO L85 PathProgramCache]: Analyzing trace with hash -743229803, now seen corresponding path program 1 times [2022-11-16 11:13:42,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:13:42,669 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395032996] [2022-11-16 11:13:42,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:13:42,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:13:42,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:42,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:13:42,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:13:42,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395032996] [2022-11-16 11:13:42,886 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395032996] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:13:42,887 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:13:42,887 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:13:42,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627400136] [2022-11-16 11:13:42,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:13:42,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:13:42,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:13:42,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:13:42,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:13:42,889 INFO L87 Difference]: Start difference. First operand 1207 states and 3179 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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) [2022-11-16 11:13:43,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:13:43,001 INFO L93 Difference]: Finished difference Result 1195 states and 3150 transitions. [2022-11-16 11:13:43,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:13:43,002 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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 11 [2022-11-16 11:13:43,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:13:43,006 INFO L225 Difference]: With dead ends: 1195 [2022-11-16 11:13:43,006 INFO L226 Difference]: Without dead ends: 1195 [2022-11-16 11:13:43,006 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:13:43,007 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 126 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:13:43,008 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 5 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 11:13:43,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1195 states. [2022-11-16 11:13:43,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1195 to 1195. [2022-11-16 11:13:43,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1195 states, 1160 states have (on average 2.7155172413793105) internal successors, (3150), 1194 states have internal predecessors, (3150), 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) [2022-11-16 11:13:43,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1195 states to 1195 states and 3150 transitions. [2022-11-16 11:13:43,045 INFO L78 Accepts]: Start accepts. Automaton has 1195 states and 3150 transitions. Word has length 11 [2022-11-16 11:13:43,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:13:43,046 INFO L495 AbstractCegarLoop]: Abstraction has 1195 states and 3150 transitions. [2022-11-16 11:13:43,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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) [2022-11-16 11:13:43,047 INFO L276 IsEmpty]: Start isEmpty. Operand 1195 states and 3150 transitions. [2022-11-16 11:13:43,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-16 11:13:43,049 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:13:43,049 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:13:43,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-16 11:13:43,050 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t1Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2022-11-16 11:13:43,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:13:43,050 INFO L85 PathProgramCache]: Analyzing trace with hash -743229802, now seen corresponding path program 1 times [2022-11-16 11:13:43,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:13:43,051 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166160564] [2022-11-16 11:13:43,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:13:43,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:13:43,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:44,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:13:44,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:13:44,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166160564] [2022-11-16 11:13:44,204 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166160564] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:13:44,205 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:13:44,205 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:13:44,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407774622] [2022-11-16 11:13:44,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:13:44,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:13:44,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:13:44,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:13:44,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:13:44,206 INFO L87 Difference]: Start difference. First operand 1195 states and 3150 transitions. Second operand has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 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) [2022-11-16 11:13:44,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:13:44,771 INFO L93 Difference]: Finished difference Result 1261 states and 3312 transitions. [2022-11-16 11:13:44,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 11:13:44,771 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 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 11 [2022-11-16 11:13:44,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:13:44,777 INFO L225 Difference]: With dead ends: 1261 [2022-11-16 11:13:44,777 INFO L226 Difference]: Without dead ends: 1261 [2022-11-16 11:13:44,777 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:13:44,778 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 41 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-16 11:13:44,778 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 22 Invalid, 269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 265 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-16 11:13:44,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1261 states. [2022-11-16 11:13:44,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1261 to 1239. [2022-11-16 11:13:44,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1239 states, 1204 states have (on average 2.7059800664451825) internal successors, (3258), 1238 states have internal predecessors, (3258), 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) [2022-11-16 11:13:44,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1239 states to 1239 states and 3258 transitions. [2022-11-16 11:13:44,813 INFO L78 Accepts]: Start accepts. Automaton has 1239 states and 3258 transitions. Word has length 11 [2022-11-16 11:13:44,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:13:44,814 INFO L495 AbstractCegarLoop]: Abstraction has 1239 states and 3258 transitions. [2022-11-16 11:13:44,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 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) [2022-11-16 11:13:44,814 INFO L276 IsEmpty]: Start isEmpty. Operand 1239 states and 3258 transitions. [2022-11-16 11:13:44,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-16 11:13:44,815 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:13:44,815 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:13:44,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-16 11:13:44,816 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t1Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2022-11-16 11:13:44,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:13:44,816 INFO L85 PathProgramCache]: Analyzing trace with hash -330179010, now seen corresponding path program 2 times [2022-11-16 11:13:44,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:13:44,817 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465623384] [2022-11-16 11:13:44,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:13:44,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:13:44,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:45,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:13:45,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:13:45,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465623384] [2022-11-16 11:13:45,354 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465623384] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:13:45,355 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:13:45,355 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:13:45,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077360268] [2022-11-16 11:13:45,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:13:45,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:13:45,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:13:45,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:13:45,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:13:45,357 INFO L87 Difference]: Start difference. First operand 1239 states and 3258 transitions. Second operand has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 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) [2022-11-16 11:13:45,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:13:45,738 INFO L93 Difference]: Finished difference Result 1228 states and 3220 transitions. [2022-11-16 11:13:45,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:13:45,739 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 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 11 [2022-11-16 11:13:45,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:13:45,744 INFO L225 Difference]: With dead ends: 1228 [2022-11-16 11:13:45,744 INFO L226 Difference]: Without dead ends: 1228 [2022-11-16 11:13:45,745 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:13:45,745 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 27 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 11:13:45,746 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 22 Invalid, 265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 11:13:45,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1228 states. [2022-11-16 11:13:45,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1228 to 1184. [2022-11-16 11:13:45,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1184 states, 1149 states have (on average 2.708442123585727) internal successors, (3112), 1183 states have internal predecessors, (3112), 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) [2022-11-16 11:13:45,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1184 states to 1184 states and 3112 transitions. [2022-11-16 11:13:45,777 INFO L78 Accepts]: Start accepts. Automaton has 1184 states and 3112 transitions. Word has length 11 [2022-11-16 11:13:45,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:13:45,778 INFO L495 AbstractCegarLoop]: Abstraction has 1184 states and 3112 transitions. [2022-11-16 11:13:45,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 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) [2022-11-16 11:13:45,778 INFO L276 IsEmpty]: Start isEmpty. Operand 1184 states and 3112 transitions. [2022-11-16 11:13:45,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-16 11:13:45,779 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:13:45,779 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:13:45,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-16 11:13:45,780 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t1Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2022-11-16 11:13:45,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:13:45,780 INFO L85 PathProgramCache]: Analyzing trace with hash -819395161, now seen corresponding path program 1 times [2022-11-16 11:13:45,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:13:45,781 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287466586] [2022-11-16 11:13:45,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:13:45,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:13:45,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:45,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:13:45,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:13:45,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287466586] [2022-11-16 11:13:45,906 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287466586] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:13:45,906 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:13:45,907 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 11:13:45,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546030170] [2022-11-16 11:13:45,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:13:45,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:13:45,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:13:45,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:13:45,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:13:45,910 INFO L87 Difference]: Start difference. First operand 1184 states and 3112 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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) [2022-11-16 11:13:46,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:13:46,024 INFO L93 Difference]: Finished difference Result 1082 states and 2851 transitions. [2022-11-16 11:13:46,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:13:46,025 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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 11 [2022-11-16 11:13:46,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:13:46,030 INFO L225 Difference]: With dead ends: 1082 [2022-11-16 11:13:46,030 INFO L226 Difference]: Without dead ends: 1082 [2022-11-16 11:13:46,030 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 [2022-11-16 11:13:46,031 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 53 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:13:46,032 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 5 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 11:13:46,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1082 states. [2022-11-16 11:13:46,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1082 to 1082. [2022-11-16 11:13:46,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1082 states, 1060 states have (on average 2.689622641509434) internal successors, (2851), 1081 states have internal predecessors, (2851), 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) [2022-11-16 11:13:46,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1082 states to 1082 states and 2851 transitions. [2022-11-16 11:13:46,062 INFO L78 Accepts]: Start accepts. Automaton has 1082 states and 2851 transitions. Word has length 11 [2022-11-16 11:13:46,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:13:46,063 INFO L495 AbstractCegarLoop]: Abstraction has 1082 states and 2851 transitions. [2022-11-16 11:13:46,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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) [2022-11-16 11:13:46,063 INFO L276 IsEmpty]: Start isEmpty. Operand 1082 states and 2851 transitions. [2022-11-16 11:13:46,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-16 11:13:46,064 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:13:46,064 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:13:46,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-16 11:13:46,065 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t1Err40ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2022-11-16 11:13:46,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:13:46,067 INFO L85 PathProgramCache]: Analyzing trace with hash 368555265, now seen corresponding path program 1 times [2022-11-16 11:13:46,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:13:46,067 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126096887] [2022-11-16 11:13:46,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:13:46,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:13:46,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:46,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:13:46,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:13:46,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126096887] [2022-11-16 11:13:46,148 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126096887] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:13:46,148 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:13:46,148 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:13:46,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846976942] [2022-11-16 11:13:46,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:13:46,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:13:46,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:13:46,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:13:46,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:13:46,150 INFO L87 Difference]: Start difference. First operand 1082 states and 2851 transitions. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:13:46,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:13:46,300 INFO L93 Difference]: Finished difference Result 1082 states and 2839 transitions. [2022-11-16 11:13:46,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:13:46,301 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-16 11:13:46,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:13:46,305 INFO L225 Difference]: With dead ends: 1082 [2022-11-16 11:13:46,306 INFO L226 Difference]: Without dead ends: 1082 [2022-11-16 11:13:46,306 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 [2022-11-16 11:13:46,307 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 8 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:13:46,307 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 16 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 11:13:46,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1082 states. [2022-11-16 11:13:46,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1082 to 1082. [2022-11-16 11:13:46,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1082 states, 1060 states have (on average 2.6783018867924526) internal successors, (2839), 1081 states have internal predecessors, (2839), 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) [2022-11-16 11:13:46,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1082 states to 1082 states and 2839 transitions. [2022-11-16 11:13:46,337 INFO L78 Accepts]: Start accepts. Automaton has 1082 states and 2839 transitions. Word has length 12 [2022-11-16 11:13:46,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:13:46,337 INFO L495 AbstractCegarLoop]: Abstraction has 1082 states and 2839 transitions. [2022-11-16 11:13:46,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:13:46,338 INFO L276 IsEmpty]: Start isEmpty. Operand 1082 states and 2839 transitions. [2022-11-16 11:13:46,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-16 11:13:46,339 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:13:46,339 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:13:46,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-16 11:13:46,339 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting t1Err40ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2022-11-16 11:13:46,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:13:46,340 INFO L85 PathProgramCache]: Analyzing trace with hash 1995850313, now seen corresponding path program 1 times [2022-11-16 11:13:46,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:13:46,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934781398] [2022-11-16 11:13:46,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:13:46,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:13:46,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:47,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:13:47,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:13:47,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934781398] [2022-11-16 11:13:47,404 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934781398] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:13:47,404 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:13:47,405 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-16 11:13:47,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005047399] [2022-11-16 11:13:47,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:13:47,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-16 11:13:47,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:13:47,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-16 11:13:47,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-16 11:13:47,407 INFO L87 Difference]: Start difference. First operand 1082 states and 2839 transitions. Second operand has 9 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 8 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:13:47,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:13:47,826 INFO L93 Difference]: Finished difference Result 1080 states and 2835 transitions. [2022-11-16 11:13:47,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 11:13:47,826 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 8 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-16 11:13:47,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:13:47,831 INFO L225 Difference]: With dead ends: 1080 [2022-11-16 11:13:47,831 INFO L226 Difference]: Without dead ends: 1080 [2022-11-16 11:13:47,831 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2022-11-16 11:13:47,832 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 15 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 376 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 376 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 11:13:47,832 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 31 Invalid, 382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 376 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-16 11:13:47,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1080 states. [2022-11-16 11:13:47,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1080 to 1080. [2022-11-16 11:13:47,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1080 states, 1058 states have (on average 2.679584120982987) internal successors, (2835), 1079 states have internal predecessors, (2835), 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) [2022-11-16 11:13:47,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1080 states to 1080 states and 2835 transitions. [2022-11-16 11:13:47,866 INFO L78 Accepts]: Start accepts. Automaton has 1080 states and 2835 transitions. Word has length 14 [2022-11-16 11:13:47,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:13:47,866 INFO L495 AbstractCegarLoop]: Abstraction has 1080 states and 2835 transitions. [2022-11-16 11:13:47,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 8 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:13:47,866 INFO L276 IsEmpty]: Start isEmpty. Operand 1080 states and 2835 transitions. [2022-11-16 11:13:47,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-16 11:13:47,867 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:13:47,868 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:13:47,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-16 11:13:47,868 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting t1Err40ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2022-11-16 11:13:47,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:13:47,869 INFO L85 PathProgramCache]: Analyzing trace with hash 528751727, now seen corresponding path program 1 times [2022-11-16 11:13:47,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:13:47,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293507678] [2022-11-16 11:13:47,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:13:47,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:13:47,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:49,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:13:49,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:13:49,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293507678] [2022-11-16 11:13:49,413 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293507678] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:13:49,413 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:13:49,413 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-16 11:13:49,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86316128] [2022-11-16 11:13:49,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:13:49,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 11:13:49,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:13:49,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 11:13:49,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-11-16 11:13:49,415 INFO L87 Difference]: Start difference. First operand 1080 states and 2835 transitions. Second operand has 10 states, 10 states have (on average 1.5) internal successors, (15), 9 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:13:50,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:13:50,259 INFO L93 Difference]: Finished difference Result 1209 states and 3156 transitions. [2022-11-16 11:13:50,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 11:13:50,260 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.5) internal successors, (15), 9 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-11-16 11:13:50,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:13:50,264 INFO L225 Difference]: With dead ends: 1209 [2022-11-16 11:13:50,264 INFO L226 Difference]: Without dead ends: 1209 [2022-11-16 11:13:50,264 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2022-11-16 11:13:50,265 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 63 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 673 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 684 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 673 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-16 11:13:50,265 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 46 Invalid, 684 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 673 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-16 11:13:50,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1209 states. [2022-11-16 11:13:50,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1209 to 1113. [2022-11-16 11:13:50,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1113 states, 1091 states have (on average 2.6727772685609534) internal successors, (2916), 1112 states have internal predecessors, (2916), 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) [2022-11-16 11:13:50,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1113 states to 1113 states and 2916 transitions. [2022-11-16 11:13:50,293 INFO L78 Accepts]: Start accepts. Automaton has 1113 states and 2916 transitions. Word has length 15 [2022-11-16 11:13:50,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:13:50,293 INFO L495 AbstractCegarLoop]: Abstraction has 1113 states and 2916 transitions. [2022-11-16 11:13:50,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.5) internal successors, (15), 9 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:13:50,294 INFO L276 IsEmpty]: Start isEmpty. Operand 1113 states and 2916 transitions. [2022-11-16 11:13:50,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-16 11:13:50,294 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:13:50,294 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:13:50,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-16 11:13:50,295 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting t1Err40ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2022-11-16 11:13:50,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:13:50,295 INFO L85 PathProgramCache]: Analyzing trace with hash 1784057779, now seen corresponding path program 2 times [2022-11-16 11:13:50,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:13:50,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971222926] [2022-11-16 11:13:50,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:13:50,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:13:50,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:51,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:13:51,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:13:51,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971222926] [2022-11-16 11:13:51,554 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971222926] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:13:51,554 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:13:51,554 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-16 11:13:51,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30217828] [2022-11-16 11:13:51,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:13:51,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 11:13:51,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:13:51,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 11:13:51,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-16 11:13:51,556 INFO L87 Difference]: Start difference. First operand 1113 states and 2916 transitions. Second operand has 10 states, 10 states have (on average 1.5) internal successors, (15), 9 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:13:52,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:13:52,356 INFO L93 Difference]: Finished difference Result 1186 states and 3100 transitions. [2022-11-16 11:13:52,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 11:13:52,356 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.5) internal successors, (15), 9 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-11-16 11:13:52,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:13:52,361 INFO L225 Difference]: With dead ends: 1186 [2022-11-16 11:13:52,361 INFO L226 Difference]: Without dead ends: 1186 [2022-11-16 11:13:52,361 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2022-11-16 11:13:52,362 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 94 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 534 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 534 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-16 11:13:52,362 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 34 Invalid, 548 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 534 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-16 11:13:52,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1186 states. [2022-11-16 11:13:52,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1186 to 1091. [2022-11-16 11:13:52,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1091 states, 1069 states have (on average 2.677268475210477) internal successors, (2862), 1090 states have internal predecessors, (2862), 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) [2022-11-16 11:13:52,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1091 states to 1091 states and 2862 transitions. [2022-11-16 11:13:52,391 INFO L78 Accepts]: Start accepts. Automaton has 1091 states and 2862 transitions. Word has length 15 [2022-11-16 11:13:52,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:13:52,391 INFO L495 AbstractCegarLoop]: Abstraction has 1091 states and 2862 transitions. [2022-11-16 11:13:52,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.5) internal successors, (15), 9 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:13:52,392 INFO L276 IsEmpty]: Start isEmpty. Operand 1091 states and 2862 transitions. [2022-11-16 11:13:52,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-16 11:13:52,392 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:13:52,393 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:13:52,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-16 11:13:52,393 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting t1Err40ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2022-11-16 11:13:52,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:13:52,394 INFO L85 PathProgramCache]: Analyzing trace with hash 1741706509, now seen corresponding path program 3 times [2022-11-16 11:13:52,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:13:52,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059282417] [2022-11-16 11:13:52,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:13:52,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:13:52,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:53,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:13:53,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:13:53,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059282417] [2022-11-16 11:13:53,543 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059282417] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:13:53,543 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:13:53,543 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-16 11:13:53,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580599442] [2022-11-16 11:13:53,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:13:53,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 11:13:53,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:13:53,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 11:13:53,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-16 11:13:53,549 INFO L87 Difference]: Start difference. First operand 1091 states and 2862 transitions. Second operand has 10 states, 10 states have (on average 1.5) internal successors, (15), 9 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:13:54,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:13:54,343 INFO L93 Difference]: Finished difference Result 1130 states and 2965 transitions. [2022-11-16 11:13:54,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 11:13:54,344 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.5) internal successors, (15), 9 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-11-16 11:13:54,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:13:54,348 INFO L225 Difference]: With dead ends: 1130 [2022-11-16 11:13:54,349 INFO L226 Difference]: Without dead ends: 1130 [2022-11-16 11:13:54,349 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2022-11-16 11:13:54,350 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 98 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 585 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 603 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 585 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-16 11:13:54,350 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 33 Invalid, 603 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 585 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-16 11:13:54,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1130 states. [2022-11-16 11:13:54,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1130 to 1058. [2022-11-16 11:13:54,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1058 states, 1038 states have (on average 2.679190751445087) internal successors, (2781), 1057 states have internal predecessors, (2781), 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) [2022-11-16 11:13:54,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1058 states to 1058 states and 2781 transitions. [2022-11-16 11:13:54,378 INFO L78 Accepts]: Start accepts. Automaton has 1058 states and 2781 transitions. Word has length 15 [2022-11-16 11:13:54,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:13:54,378 INFO L495 AbstractCegarLoop]: Abstraction has 1058 states and 2781 transitions. [2022-11-16 11:13:54,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.5) internal successors, (15), 9 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:13:54,379 INFO L276 IsEmpty]: Start isEmpty. Operand 1058 states and 2781 transitions. [2022-11-16 11:13:54,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-16 11:13:54,380 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:13:54,380 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:13:54,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-16 11:13:54,381 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting t1Err25REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2022-11-16 11:13:54,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:13:54,381 INFO L85 PathProgramCache]: Analyzing trace with hash -1839458642, now seen corresponding path program 1 times [2022-11-16 11:13:54,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:13:54,382 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139894686] [2022-11-16 11:13:54,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:13:54,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:13:54,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:55,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:13:55,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:13:55,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139894686] [2022-11-16 11:13:55,489 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139894686] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:13:55,489 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:13:55,489 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 11:13:55,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299101979] [2022-11-16 11:13:55,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:13:55,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-16 11:13:55,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:13:55,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-16 11:13:55,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-11-16 11:13:55,490 INFO L87 Difference]: Start difference. First operand 1058 states and 2781 transitions. Second operand has 9 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:13:56,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:13:56,151 INFO L93 Difference]: Finished difference Result 1186 states and 3100 transitions. [2022-11-16 11:13:56,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 11:13:56,152 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-16 11:13:56,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:13:56,156 INFO L225 Difference]: With dead ends: 1186 [2022-11-16 11:13:56,156 INFO L226 Difference]: Without dead ends: 1186 [2022-11-16 11:13:56,157 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2022-11-16 11:13:56,158 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 60 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 486 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 492 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 486 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-16 11:13:56,159 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 25 Invalid, 492 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 486 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-16 11:13:56,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1186 states. [2022-11-16 11:13:56,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1186 to 1156. [2022-11-16 11:13:56,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1156 states, 1136 states have (on average 2.6778169014084505) internal successors, (3042), 1155 states have internal predecessors, (3042), 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) [2022-11-16 11:13:56,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1156 states to 1156 states and 3042 transitions. [2022-11-16 11:13:56,186 INFO L78 Accepts]: Start accepts. Automaton has 1156 states and 3042 transitions. Word has length 16 [2022-11-16 11:13:56,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:13:56,186 INFO L495 AbstractCegarLoop]: Abstraction has 1156 states and 3042 transitions. [2022-11-16 11:13:56,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:13:56,187 INFO L276 IsEmpty]: Start isEmpty. Operand 1156 states and 3042 transitions. [2022-11-16 11:13:56,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-16 11:13:56,188 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:13:56,188 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:13:56,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-16 11:13:56,189 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting t1Err25REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2022-11-16 11:13:56,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:13:56,189 INFO L85 PathProgramCache]: Analyzing trace with hash 1323040596, now seen corresponding path program 1 times [2022-11-16 11:13:56,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:13:56,190 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867951638] [2022-11-16 11:13:56,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:13:56,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:13:56,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:57,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:13:57,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:13:57,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867951638] [2022-11-16 11:13:57,336 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [867951638] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:13:57,336 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:13:57,336 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-16 11:13:57,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690636075] [2022-11-16 11:13:57,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:13:57,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 11:13:57,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:13:57,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 11:13:57,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-11-16 11:13:57,337 INFO L87 Difference]: Start difference. First operand 1156 states and 3042 transitions. Second operand has 10 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 9 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:13:58,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:13:58,013 INFO L93 Difference]: Finished difference Result 1274 states and 3336 transitions. [2022-11-16 11:13:58,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 11:13:58,013 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 9 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-16 11:13:58,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:13:58,018 INFO L225 Difference]: With dead ends: 1274 [2022-11-16 11:13:58,019 INFO L226 Difference]: Without dead ends: 1274 [2022-11-16 11:13:58,019 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2022-11-16 11:13:58,020 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 82 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 597 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 608 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 597 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-16 11:13:58,023 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 33 Invalid, 608 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 597 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-16 11:13:58,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1274 states. [2022-11-16 11:13:58,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1274 to 1145. [2022-11-16 11:13:58,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1145 states, 1125 states have (on average 2.68) internal successors, (3015), 1144 states have internal predecessors, (3015), 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) [2022-11-16 11:13:58,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1145 states to 1145 states and 3015 transitions. [2022-11-16 11:13:58,055 INFO L78 Accepts]: Start accepts. Automaton has 1145 states and 3015 transitions. Word has length 17 [2022-11-16 11:13:58,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:13:58,055 INFO L495 AbstractCegarLoop]: Abstraction has 1145 states and 3015 transitions. [2022-11-16 11:13:58,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 9 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:13:58,056 INFO L276 IsEmpty]: Start isEmpty. Operand 1145 states and 3015 transitions. [2022-11-16 11:13:58,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-16 11:13:58,057 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:13:58,057 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:13:58,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-16 11:13:58,057 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting t1Err25REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2022-11-16 11:13:58,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:13:58,058 INFO L85 PathProgramCache]: Analyzing trace with hash 786346392, now seen corresponding path program 2 times [2022-11-16 11:13:58,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:13:58,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851377245] [2022-11-16 11:13:58,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:13:58,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:13:58,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:59,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:13:59,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:13:59,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851377245] [2022-11-16 11:13:59,157 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851377245] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:13:59,157 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:13:59,157 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-16 11:13:59,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848168953] [2022-11-16 11:13:59,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:13:59,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 11:13:59,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:13:59,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 11:13:59,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-11-16 11:13:59,159 INFO L87 Difference]: Start difference. First operand 1145 states and 3015 transitions. Second operand has 10 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 9 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:13:59,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:13:59,835 INFO L93 Difference]: Finished difference Result 1196 states and 3145 transitions. [2022-11-16 11:13:59,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 11:13:59,836 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 9 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-16 11:13:59,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:13:59,840 INFO L225 Difference]: With dead ends: 1196 [2022-11-16 11:13:59,841 INFO L226 Difference]: Without dead ends: 1196 [2022-11-16 11:13:59,841 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2022-11-16 11:13:59,843 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 99 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 458 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 458 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-16 11:13:59,843 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 25 Invalid, 472 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 458 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-16 11:13:59,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1196 states. [2022-11-16 11:13:59,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1196 to 1086. [2022-11-16 11:13:59,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1086 states, 1066 states have (on average 2.6885553470919326) internal successors, (2866), 1085 states have internal predecessors, (2866), 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) [2022-11-16 11:13:59,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1086 states to 1086 states and 2866 transitions. [2022-11-16 11:13:59,872 INFO L78 Accepts]: Start accepts. Automaton has 1086 states and 2866 transitions. Word has length 17 [2022-11-16 11:13:59,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:13:59,873 INFO L495 AbstractCegarLoop]: Abstraction has 1086 states and 2866 transitions. [2022-11-16 11:13:59,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 9 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:13:59,873 INFO L276 IsEmpty]: Start isEmpty. Operand 1086 states and 2866 transitions. [2022-11-16 11:13:59,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-16 11:13:59,875 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:13:59,875 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:13:59,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-11-16 11:13:59,876 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting t1Err39REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2022-11-16 11:13:59,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:13:59,876 INFO L85 PathProgramCache]: Analyzing trace with hash -565672094, now seen corresponding path program 1 times [2022-11-16 11:13:59,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:13:59,877 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051212478] [2022-11-16 11:13:59,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:13:59,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:13:59,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:14:01,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:14:01,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:14:01,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051212478] [2022-11-16 11:14:01,246 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051212478] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:14:01,247 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:14:01,247 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-16 11:14:01,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425403201] [2022-11-16 11:14:01,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:14:01,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 11:14:01,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:14:01,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 11:14:01,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2022-11-16 11:14:01,249 INFO L87 Difference]: Start difference. First operand 1086 states and 2866 transitions. Second operand has 12 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 11 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:14:02,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:14:02,401 INFO L93 Difference]: Finished difference Result 1409 states and 3676 transitions. [2022-11-16 11:14:02,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-16 11:14:02,402 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 11 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-11-16 11:14:02,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:14:02,407 INFO L225 Difference]: With dead ends: 1409 [2022-11-16 11:14:02,408 INFO L226 Difference]: Without dead ends: 1409 [2022-11-16 11:14:02,408 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2022-11-16 11:14:02,414 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 124 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 1025 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 1044 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1025 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:14:02,415 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 48 Invalid, 1044 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1025 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-16 11:14:02,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1409 states. [2022-11-16 11:14:02,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1409 to 1240. [2022-11-16 11:14:02,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 1220 states have (on average 2.6745901639344263) internal successors, (3263), 1239 states have internal predecessors, (3263), 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) [2022-11-16 11:14:02,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 3263 transitions. [2022-11-16 11:14:02,462 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 3263 transitions. Word has length 22 [2022-11-16 11:14:02,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:14:02,462 INFO L495 AbstractCegarLoop]: Abstraction has 1240 states and 3263 transitions. [2022-11-16 11:14:02,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 11 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:14:02,463 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 3263 transitions. [2022-11-16 11:14:02,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-16 11:14:02,469 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:14:02,469 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:14:02,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-11-16 11:14:02,470 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting t1Err39REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2022-11-16 11:14:02,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:14:02,470 INFO L85 PathProgramCache]: Analyzing trace with hash -226174072, now seen corresponding path program 1 times [2022-11-16 11:14:02,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:14:02,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317338944] [2022-11-16 11:14:02,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:14:02,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:14:02,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:14:03,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:14:03,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:14:03,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317338944] [2022-11-16 11:14:03,815 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317338944] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:14:03,815 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:14:03,815 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-16 11:14:03,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641739340] [2022-11-16 11:14:03,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:14:03,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-16 11:14:03,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:14:03,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-16 11:14:03,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2022-11-16 11:14:03,816 INFO L87 Difference]: Start difference. First operand 1240 states and 3263 transitions. Second operand has 13 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 12 states have internal predecessors, (23), 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) [2022-11-16 11:14:04,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:14:04,856 INFO L93 Difference]: Finished difference Result 1530 states and 3993 transitions. [2022-11-16 11:14:04,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-16 11:14:04,857 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 12 states have internal predecessors, (23), 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 23 [2022-11-16 11:14:04,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:14:04,862 INFO L225 Difference]: With dead ends: 1530 [2022-11-16 11:14:04,862 INFO L226 Difference]: Without dead ends: 1530 [2022-11-16 11:14:04,863 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=108, Invalid=312, Unknown=0, NotChecked=0, Total=420 [2022-11-16 11:14:04,863 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 179 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 849 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 873 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 849 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-16 11:14:04,864 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 41 Invalid, 873 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 849 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-16 11:14:04,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1530 states. [2022-11-16 11:14:04,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1530 to 1229. [2022-11-16 11:14:04,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1229 states, 1209 states have (on average 2.6765922249793217) internal successors, (3236), 1228 states have internal predecessors, (3236), 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) [2022-11-16 11:14:04,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1229 states to 1229 states and 3236 transitions. [2022-11-16 11:14:04,898 INFO L78 Accepts]: Start accepts. Automaton has 1229 states and 3236 transitions. Word has length 23 [2022-11-16 11:14:04,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:14:04,898 INFO L495 AbstractCegarLoop]: Abstraction has 1229 states and 3236 transitions. [2022-11-16 11:14:04,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 12 states have internal predecessors, (23), 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) [2022-11-16 11:14:04,899 INFO L276 IsEmpty]: Start isEmpty. Operand 1229 states and 3236 transitions. [2022-11-16 11:14:04,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-16 11:14:04,900 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:14:04,900 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:14:04,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-11-16 11:14:04,901 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting t1Err39REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2022-11-16 11:14:04,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:14:04,902 INFO L85 PathProgramCache]: Analyzing trace with hash 1801571020, now seen corresponding path program 2 times [2022-11-16 11:14:04,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:14:04,902 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092485060] [2022-11-16 11:14:04,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:14:04,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:14:04,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:14:06,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:14:06,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:14:06,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092485060] [2022-11-16 11:14:06,540 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1092485060] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:14:06,540 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:14:06,541 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-16 11:14:06,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955781861] [2022-11-16 11:14:06,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:14:06,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-16 11:14:06,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:14:06,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-16 11:14:06,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2022-11-16 11:14:06,542 INFO L87 Difference]: Start difference. First operand 1229 states and 3236 transitions. Second operand has 13 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 12 states have internal predecessors, (23), 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) [2022-11-16 11:14:07,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:14:07,616 INFO L93 Difference]: Finished difference Result 1434 states and 3742 transitions. [2022-11-16 11:14:07,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-16 11:14:07,616 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 12 states have internal predecessors, (23), 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 23 [2022-11-16 11:14:07,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:14:07,621 INFO L225 Difference]: With dead ends: 1434 [2022-11-16 11:14:07,621 INFO L226 Difference]: Without dead ends: 1434 [2022-11-16 11:14:07,622 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=119, Invalid=343, Unknown=0, NotChecked=0, Total=462 [2022-11-16 11:14:07,623 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 215 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 825 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 857 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 825 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-16 11:14:07,623 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [215 Valid, 44 Invalid, 857 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 825 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-16 11:14:07,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1434 states. [2022-11-16 11:14:07,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1434 to 1141. [2022-11-16 11:14:07,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1141 states, 1121 states have (on average 2.6761819803746656) internal successors, (3000), 1140 states have internal predecessors, (3000), 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) [2022-11-16 11:14:07,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1141 states to 1141 states and 3000 transitions. [2022-11-16 11:14:07,656 INFO L78 Accepts]: Start accepts. Automaton has 1141 states and 3000 transitions. Word has length 23 [2022-11-16 11:14:07,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:14:07,657 INFO L495 AbstractCegarLoop]: Abstraction has 1141 states and 3000 transitions. [2022-11-16 11:14:07,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 12 states have internal predecessors, (23), 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) [2022-11-16 11:14:07,658 INFO L276 IsEmpty]: Start isEmpty. Operand 1141 states and 3000 transitions. [2022-11-16 11:14:07,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-16 11:14:07,659 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:14:07,659 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:14:07,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-11-16 11:14:07,660 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting t1Err39REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2022-11-16 11:14:07,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:14:07,660 INFO L85 PathProgramCache]: Analyzing trace with hash -1484178726, now seen corresponding path program 3 times [2022-11-16 11:14:07,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:14:07,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909147318] [2022-11-16 11:14:07,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:14:07,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:14:07,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:14:08,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:14:08,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:14:08,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909147318] [2022-11-16 11:14:08,904 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909147318] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:14:08,904 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:14:08,904 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-16 11:14:08,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18571063] [2022-11-16 11:14:08,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:14:08,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-16 11:14:08,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:14:08,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-16 11:14:08,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2022-11-16 11:14:08,906 INFO L87 Difference]: Start difference. First operand 1141 states and 3000 transitions. Second operand has 13 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 12 states have internal predecessors, (23), 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) [2022-11-16 11:14:10,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:14:10,053 INFO L93 Difference]: Finished difference Result 1342 states and 3499 transitions. [2022-11-16 11:14:10,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-16 11:14:10,054 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 12 states have internal predecessors, (23), 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 23 [2022-11-16 11:14:10,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:14:10,059 INFO L225 Difference]: With dead ends: 1342 [2022-11-16 11:14:10,059 INFO L226 Difference]: Without dead ends: 1342 [2022-11-16 11:14:10,060 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=106, Invalid=314, Unknown=0, NotChecked=0, Total=420 [2022-11-16 11:14:10,060 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 219 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 789 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 828 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 789 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-16 11:14:10,061 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [219 Valid, 42 Invalid, 828 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 789 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-16 11:14:10,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1342 states. [2022-11-16 11:14:10,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1342 to 1135. [2022-11-16 11:14:10,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1135 states, 1115 states have (on average 2.6780269058295962) internal successors, (2986), 1134 states have internal predecessors, (2986), 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) [2022-11-16 11:14:10,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1135 states to 1135 states and 2986 transitions. [2022-11-16 11:14:10,094 INFO L78 Accepts]: Start accepts. Automaton has 1135 states and 2986 transitions. Word has length 23 [2022-11-16 11:14:10,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:14:10,094 INFO L495 AbstractCegarLoop]: Abstraction has 1135 states and 2986 transitions. [2022-11-16 11:14:10,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 12 states have internal predecessors, (23), 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) [2022-11-16 11:14:10,094 INFO L276 IsEmpty]: Start isEmpty. Operand 1135 states and 2986 transitions. [2022-11-16 11:14:10,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-16 11:14:10,096 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:14:10,096 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:14:10,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-11-16 11:14:10,096 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting t1Err39REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2022-11-16 11:14:10,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:14:10,097 INFO L85 PathProgramCache]: Analyzing trace with hash -351935520, now seen corresponding path program 4 times [2022-11-16 11:14:10,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:14:10,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102121334] [2022-11-16 11:14:10,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:14:10,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:14:10,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:14:11,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:14:11,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:14:11,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102121334] [2022-11-16 11:14:11,459 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102121334] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:14:11,459 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:14:11,460 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-16 11:14:11,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246519874] [2022-11-16 11:14:11,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:14:11,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-16 11:14:11,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:14:11,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-16 11:14:11,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2022-11-16 11:14:11,461 INFO L87 Difference]: Start difference. First operand 1135 states and 2986 transitions. Second operand has 13 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 12 states have internal predecessors, (23), 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) [2022-11-16 11:14:12,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:14:12,627 INFO L93 Difference]: Finished difference Result 1280 states and 3346 transitions. [2022-11-16 11:14:12,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-16 11:14:12,633 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 12 states have internal predecessors, (23), 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 23 [2022-11-16 11:14:12,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:14:12,635 INFO L225 Difference]: With dead ends: 1280 [2022-11-16 11:14:12,635 INFO L226 Difference]: Without dead ends: 1280 [2022-11-16 11:14:12,636 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=111, Invalid=309, Unknown=0, NotChecked=0, Total=420 [2022-11-16 11:14:12,636 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 208 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 845 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 883 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 845 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-16 11:14:12,637 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [208 Valid, 43 Invalid, 883 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 845 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-16 11:14:12,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1280 states. [2022-11-16 11:14:12,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1280 to 1126. [2022-11-16 11:14:12,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1126 states, 1106 states have (on average 2.678119349005425) internal successors, (2962), 1125 states have internal predecessors, (2962), 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) [2022-11-16 11:14:12,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1126 states to 1126 states and 2962 transitions. [2022-11-16 11:14:12,667 INFO L78 Accepts]: Start accepts. Automaton has 1126 states and 2962 transitions. Word has length 23 [2022-11-16 11:14:12,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:14:12,668 INFO L495 AbstractCegarLoop]: Abstraction has 1126 states and 2962 transitions. [2022-11-16 11:14:12,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 12 states have internal predecessors, (23), 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) [2022-11-16 11:14:12,668 INFO L276 IsEmpty]: Start isEmpty. Operand 1126 states and 2962 transitions. [2022-11-16 11:14:12,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-16 11:14:12,669 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:14:12,669 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:14:12,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-11-16 11:14:12,670 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting t1Err39REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2022-11-16 11:14:12,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:14:12,671 INFO L85 PathProgramCache]: Analyzing trace with hash -355982942, now seen corresponding path program 1 times [2022-11-16 11:14:12,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:14:12,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862565792] [2022-11-16 11:14:12,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:14:12,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:14:12,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:14:12,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:14:12,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:14:12,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862565792] [2022-11-16 11:14:12,924 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862565792] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:14:12,925 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:14:12,925 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:14:12,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994046957] [2022-11-16 11:14:12,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:14:12,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:14:12,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:14:12,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:14:12,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:14:12,927 INFO L87 Difference]: Start difference. First operand 1126 states and 2962 transitions. Second operand has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 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) [2022-11-16 11:14:13,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:14:13,106 INFO L93 Difference]: Finished difference Result 1378 states and 3601 transitions. [2022-11-16 11:14:13,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:14:13,107 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 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 23 [2022-11-16 11:14:13,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:14:13,110 INFO L225 Difference]: With dead ends: 1378 [2022-11-16 11:14:13,111 INFO L226 Difference]: Without dead ends: 1378 [2022-11-16 11:14:13,111 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:14:13,112 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 109 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:14:13,112 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 8 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 11:14:13,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1378 states. [2022-11-16 11:14:13,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1378 to 1234. [2022-11-16 11:14:13,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1234 states, 1214 states have (on average 2.6647446457990114) internal successors, (3235), 1233 states have internal predecessors, (3235), 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) [2022-11-16 11:14:13,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1234 states to 1234 states and 3235 transitions. [2022-11-16 11:14:13,144 INFO L78 Accepts]: Start accepts. Automaton has 1234 states and 3235 transitions. Word has length 23 [2022-11-16 11:14:13,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:14:13,144 INFO L495 AbstractCegarLoop]: Abstraction has 1234 states and 3235 transitions. [2022-11-16 11:14:13,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 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) [2022-11-16 11:14:13,145 INFO L276 IsEmpty]: Start isEmpty. Operand 1234 states and 3235 transitions. [2022-11-16 11:14:13,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-16 11:14:13,146 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:14:13,146 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:14:13,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-11-16 11:14:13,147 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting t1Err39REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2022-11-16 11:14:13,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:14:13,147 INFO L85 PathProgramCache]: Analyzing trace with hash 1049378647, now seen corresponding path program 1 times [2022-11-16 11:14:13,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:14:13,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773716706] [2022-11-16 11:14:13,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:14:13,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:14:13,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:14:13,205 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:14:13,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:14:13,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773716706] [2022-11-16 11:14:13,206 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773716706] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:14:13,206 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:14:13,207 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:14:13,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062863037] [2022-11-16 11:14:13,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:14:13,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:14:13,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:14:13,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:14:13,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:14:13,208 INFO L87 Difference]: Start difference. First operand 1234 states and 3235 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 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) [2022-11-16 11:14:13,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:14:13,355 INFO L93 Difference]: Finished difference Result 734 states and 1837 transitions. [2022-11-16 11:14:13,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:14:13,356 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 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 26 [2022-11-16 11:14:13,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:14:13,357 INFO L225 Difference]: With dead ends: 734 [2022-11-16 11:14:13,358 INFO L226 Difference]: Without dead ends: 702 [2022-11-16 11:14:13,358 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 [2022-11-16 11:14:13,359 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 30 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:14:13,359 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 10 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 11:14:13,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 702 states. [2022-11-16 11:14:13,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 702 to 670. [2022-11-16 11:14:13,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 670 states, 655 states have (on average 2.5618320610687024) internal successors, (1678), 669 states have internal predecessors, (1678), 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) [2022-11-16 11:14:13,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 670 states to 670 states and 1678 transitions. [2022-11-16 11:14:13,376 INFO L78 Accepts]: Start accepts. Automaton has 670 states and 1678 transitions. Word has length 26 [2022-11-16 11:14:13,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:14:13,376 INFO L495 AbstractCegarLoop]: Abstraction has 670 states and 1678 transitions. [2022-11-16 11:14:13,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 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) [2022-11-16 11:14:13,376 INFO L276 IsEmpty]: Start isEmpty. Operand 670 states and 1678 transitions. [2022-11-16 11:14:13,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-16 11:14:13,378 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:14:13,378 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:14:13,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-11-16 11:14:13,378 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2022-11-16 11:14:13,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:14:13,379 INFO L85 PathProgramCache]: Analyzing trace with hash -526888523, now seen corresponding path program 1 times [2022-11-16 11:14:13,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:14:13,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732143928] [2022-11-16 11:14:13,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:14:13,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:14:13,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:14:13,489 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:14:13,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:14:13,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732143928] [2022-11-16 11:14:13,490 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732143928] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:14:13,490 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:14:13,490 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:14:13,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452153947] [2022-11-16 11:14:13,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:14:13,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:14:13,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:14:13,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:14:13,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:14:13,492 INFO L87 Difference]: Start difference. First operand 670 states and 1678 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 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) [2022-11-16 11:14:13,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:14:13,672 INFO L93 Difference]: Finished difference Result 1070 states and 2692 transitions. [2022-11-16 11:14:13,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:14:13,673 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 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 27 [2022-11-16 11:14:13,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:14:13,675 INFO L225 Difference]: With dead ends: 1070 [2022-11-16 11:14:13,675 INFO L226 Difference]: Without dead ends: 1070 [2022-11-16 11:14:13,676 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 [2022-11-16 11:14:13,676 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 52 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:14:13,677 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 19 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 11:14:13,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1070 states. [2022-11-16 11:14:13,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1070 to 736. [2022-11-16 11:14:13,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 736 states, 721 states have (on average 2.636615811373093) internal successors, (1901), 735 states have internal predecessors, (1901), 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) [2022-11-16 11:14:13,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 736 states to 736 states and 1901 transitions. [2022-11-16 11:14:13,698 INFO L78 Accepts]: Start accepts. Automaton has 736 states and 1901 transitions. Word has length 27 [2022-11-16 11:14:13,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:14:13,699 INFO L495 AbstractCegarLoop]: Abstraction has 736 states and 1901 transitions. [2022-11-16 11:14:13,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 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) [2022-11-16 11:14:13,699 INFO L276 IsEmpty]: Start isEmpty. Operand 736 states and 1901 transitions. [2022-11-16 11:14:13,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-16 11:14:13,701 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:14:13,701 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:14:13,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-11-16 11:14:13,701 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2022-11-16 11:14:13,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:14:13,702 INFO L85 PathProgramCache]: Analyzing trace with hash -1147091493, now seen corresponding path program 1 times [2022-11-16 11:14:13,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:14:13,702 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77726978] [2022-11-16 11:14:13,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:14:13,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:14:13,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:14:13,878 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:14:13,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:14:13,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77726978] [2022-11-16 11:14:13,879 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77726978] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:14:13,879 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:14:13,879 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:14:13,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461121237] [2022-11-16 11:14:13,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:14:13,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:14:13,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:14:13,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:14:13,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:14:13,882 INFO L87 Difference]: Start difference. First operand 736 states and 1901 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 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) [2022-11-16 11:14:14,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:14:14,010 INFO L93 Difference]: Finished difference Result 534 states and 1174 transitions. [2022-11-16 11:14:14,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:14:14,011 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 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 29 [2022-11-16 11:14:14,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:14:14,012 INFO L225 Difference]: With dead ends: 534 [2022-11-16 11:14:14,013 INFO L226 Difference]: Without dead ends: 520 [2022-11-16 11:14:14,013 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 [2022-11-16 11:14:14,014 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 42 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:14:14,014 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 6 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 11:14:14,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 520 states. [2022-11-16 11:14:14,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 520 to 520. [2022-11-16 11:14:14,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 520 states, 512 states have (on average 2.23046875) internal successors, (1142), 519 states have internal predecessors, (1142), 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) [2022-11-16 11:14:14,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 520 states to 520 states and 1142 transitions. [2022-11-16 11:14:14,026 INFO L78 Accepts]: Start accepts. Automaton has 520 states and 1142 transitions. Word has length 29 [2022-11-16 11:14:14,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:14:14,026 INFO L495 AbstractCegarLoop]: Abstraction has 520 states and 1142 transitions. [2022-11-16 11:14:14,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 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) [2022-11-16 11:14:14,026 INFO L276 IsEmpty]: Start isEmpty. Operand 520 states and 1142 transitions. [2022-11-16 11:14:14,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-16 11:14:14,028 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:14:14,028 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:14:14,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-11-16 11:14:14,028 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2022-11-16 11:14:14,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:14:14,029 INFO L85 PathProgramCache]: Analyzing trace with hash 1484256437, now seen corresponding path program 2 times [2022-11-16 11:14:14,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:14:14,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553093879] [2022-11-16 11:14:14,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:14:14,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:14:14,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:14:14,133 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:14:14,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:14:14,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553093879] [2022-11-16 11:14:14,133 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553093879] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:14:14,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1304942749] [2022-11-16 11:14:14,134 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:14:14,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:14:14,134 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_869d8882-4dde-4a69-b78f-a1d0b299bb5b/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:14:14,139 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_869d8882-4dde-4a69-b78f-a1d0b299bb5b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:14:14,141 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_869d8882-4dde-4a69-b78f-a1d0b299bb5b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 11:14:14,416 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-16 11:14:14,417 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:14:14,420 INFO L263 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-16 11:14:14,427 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:14:14,854 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 11:14:14,855 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:14:14,855 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1304942749] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:14:14,855 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:14:14,855 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2022-11-16 11:14:14,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74457836] [2022-11-16 11:14:14,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:14:14,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:14:14,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:14:14,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:14:14,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:14:14,857 INFO L87 Difference]: Start difference. First operand 520 states and 1142 transitions. Second operand has 3 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 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) [2022-11-16 11:14:14,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:14:14,918 INFO L93 Difference]: Finished difference Result 549 states and 1206 transitions. [2022-11-16 11:14:14,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:14:14,918 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 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 29 [2022-11-16 11:14:14,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:14:14,920 INFO L225 Difference]: With dead ends: 549 [2022-11-16 11:14:14,920 INFO L226 Difference]: Without dead ends: 492 [2022-11-16 11:14:14,920 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:14:14,921 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 0 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 56 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:14:14,921 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 10 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 56 Unchecked, 0.1s Time] [2022-11-16 11:14:14,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492 states. [2022-11-16 11:14:14,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492 to 492. [2022-11-16 11:14:14,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 492 states, 484 states have (on average 2.2107438016528924) internal successors, (1070), 491 states have internal predecessors, (1070), 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) [2022-11-16 11:14:14,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 492 states to 492 states and 1070 transitions. [2022-11-16 11:14:14,931 INFO L78 Accepts]: Start accepts. Automaton has 492 states and 1070 transitions. Word has length 29 [2022-11-16 11:14:14,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:14:14,931 INFO L495 AbstractCegarLoop]: Abstraction has 492 states and 1070 transitions. [2022-11-16 11:14:14,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 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) [2022-11-16 11:14:14,932 INFO L276 IsEmpty]: Start isEmpty. Operand 492 states and 1070 transitions. [2022-11-16 11:14:14,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-11-16 11:14:14,933 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:14:14,933 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:14:14,946 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_869d8882-4dde-4a69-b78f-a1d0b299bb5b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-16 11:14:15,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_869d8882-4dde-4a69-b78f-a1d0b299bb5b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:14:15,147 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting t2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2022-11-16 11:14:15,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:14:15,148 INFO L85 PathProgramCache]: Analyzing trace with hash 986435019, now seen corresponding path program 1 times [2022-11-16 11:14:15,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:14:15,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229124243] [2022-11-16 11:14:15,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:14:15,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:14:15,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat