./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 8393723b 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_a779140c-df19-4a8b-87ae-1fff73edbef4/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a779140c-df19-4a8b-87ae-1fff73edbef4/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a779140c-df19-4a8b-87ae-1fff73edbef4/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a779140c-df19-4a8b-87ae-1fff73edbef4/bin/uautomizer-TMbwUNV5ro/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a779140c-df19-4a8b-87ae-1fff73edbef4/bin/uautomizer-TMbwUNV5ro/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a779140c-df19-4a8b-87ae-1fff73edbef4/bin/uautomizer-TMbwUNV5ro --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 2f8161fc7f730bddeac54a8f174c52e5ef9cd819e9497e3a4087e68b96d46105 --- 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-8393723 [2022-11-18 20:01:46,439 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 20:01:46,441 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 20:01:46,470 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 20:01:46,470 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 20:01:46,479 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 20:01:46,481 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 20:01:46,483 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 20:01:46,485 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 20:01:46,486 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 20:01:46,487 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 20:01:46,488 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 20:01:46,489 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 20:01:46,490 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 20:01:46,491 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 20:01:46,492 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 20:01:46,493 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 20:01:46,501 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 20:01:46,508 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 20:01:46,516 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 20:01:46,519 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 20:01:46,523 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 20:01:46,524 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 20:01:46,525 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 20:01:46,528 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 20:01:46,529 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 20:01:46,529 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 20:01:46,530 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 20:01:46,530 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 20:01:46,531 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 20:01:46,532 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 20:01:46,533 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 20:01:46,533 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 20:01:46,534 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 20:01:46,544 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 20:01:46,544 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 20:01:46,545 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 20:01:46,545 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 20:01:46,545 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 20:01:46,546 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 20:01:46,547 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 20:01:46,548 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a779140c-df19-4a8b-87ae-1fff73edbef4/bin/uautomizer-TMbwUNV5ro/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-11-18 20:01:46,595 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 20:01:46,595 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 20:01:46,596 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 20:01:46,596 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 20:01:46,597 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 20:01:46,597 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 20:01:46,598 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 20:01:46,598 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 20:01:46,598 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 20:01:46,598 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 20:01:46,599 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 20:01:46,600 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 20:01:46,600 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 20:01:46,600 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 20:01:46,600 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 20:01:46,600 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-18 20:01:46,600 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-18 20:01:46,601 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-18 20:01:46,601 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 20:01:46,601 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-18 20:01:46,601 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 20:01:46,601 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 20:01:46,602 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 20:01:46,602 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 20:01:46,602 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 20:01:46,602 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:01:46,604 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 20:01:46,604 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 20:01:46,604 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 20:01:46,604 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 20:01:46,604 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_a779140c-df19-4a8b-87ae-1fff73edbef4/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a779140c-df19-4a8b-87ae-1fff73edbef4/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2f8161fc7f730bddeac54a8f174c52e5ef9cd819e9497e3a4087e68b96d46105 [2022-11-18 20:01:46,954 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 20:01:46,981 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 20:01:46,984 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 20:01:46,986 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 20:01:46,987 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 20:01:46,988 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a779140c-df19-4a8b-87ae-1fff73edbef4/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-1.i [2022-11-18 20:01:47,073 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a779140c-df19-4a8b-87ae-1fff73edbef4/bin/uautomizer-TMbwUNV5ro/data/9dda41650/1c92a76f1a7e4f9abfca2dbfe599513c/FLAGd006be7d7 [2022-11-18 20:01:47,752 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 20:01:47,753 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a779140c-df19-4a8b-87ae-1fff73edbef4/sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-1.i [2022-11-18 20:01:47,779 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a779140c-df19-4a8b-87ae-1fff73edbef4/bin/uautomizer-TMbwUNV5ro/data/9dda41650/1c92a76f1a7e4f9abfca2dbfe599513c/FLAGd006be7d7 [2022-11-18 20:01:48,017 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a779140c-df19-4a8b-87ae-1fff73edbef4/bin/uautomizer-TMbwUNV5ro/data/9dda41650/1c92a76f1a7e4f9abfca2dbfe599513c [2022-11-18 20:01:48,020 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 20:01:48,024 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 20:01:48,029 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 20:01:48,029 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 20:01:48,033 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 20:01:48,034 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:01:48" (1/1) ... [2022-11-18 20:01:48,035 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36821c99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:01:48, skipping insertion in model container [2022-11-18 20:01:48,035 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:01:48" (1/1) ... [2022-11-18 20:01:48,043 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 20:01:48,102 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 20:01:48,509 WARN L234 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_a779140c-df19-4a8b-87ae-1fff73edbef4/sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-1.i[22569,22582] [2022-11-18 20:01:48,515 WARN L234 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_a779140c-df19-4a8b-87ae-1fff73edbef4/sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-1.i[22645,22658] [2022-11-18 20:01:48,518 WARN L234 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_a779140c-df19-4a8b-87ae-1fff73edbef4/sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-1.i[22715,22728] [2022-11-18 20:01:48,520 WARN L234 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_a779140c-df19-4a8b-87ae-1fff73edbef4/sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-1.i[22822,22835] [2022-11-18 20:01:48,520 WARN L234 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_a779140c-df19-4a8b-87ae-1fff73edbef4/sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-1.i[22894,22907] [2022-11-18 20:01:48,522 WARN L234 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_a779140c-df19-4a8b-87ae-1fff73edbef4/sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-1.i[23045,23058] [2022-11-18 20:01:48,523 WARN L234 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_a779140c-df19-4a8b-87ae-1fff73edbef4/sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-1.i[23119,23132] [2022-11-18 20:01:48,529 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:01:48,547 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 20:01:48,582 WARN L234 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_a779140c-df19-4a8b-87ae-1fff73edbef4/sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-1.i[22569,22582] [2022-11-18 20:01:48,583 WARN L234 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_a779140c-df19-4a8b-87ae-1fff73edbef4/sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-1.i[22645,22658] [2022-11-18 20:01:48,584 WARN L234 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_a779140c-df19-4a8b-87ae-1fff73edbef4/sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-1.i[22715,22728] [2022-11-18 20:01:48,585 WARN L234 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_a779140c-df19-4a8b-87ae-1fff73edbef4/sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-1.i[22822,22835] [2022-11-18 20:01:48,586 WARN L234 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_a779140c-df19-4a8b-87ae-1fff73edbef4/sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-1.i[22894,22907] [2022-11-18 20:01:48,587 WARN L234 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_a779140c-df19-4a8b-87ae-1fff73edbef4/sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-1.i[23045,23058] [2022-11-18 20:01:48,588 WARN L234 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_a779140c-df19-4a8b-87ae-1fff73edbef4/sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-1.i[23119,23132] [2022-11-18 20:01:48,592 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:01:48,626 INFO L208 MainTranslator]: Completed translation [2022-11-18 20:01:48,626 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:01:48 WrapperNode [2022-11-18 20:01:48,626 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 20:01:48,627 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 20:01:48,628 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 20:01:48,628 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 20:01:48,636 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:01:48" (1/1) ... [2022-11-18 20:01:48,663 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:01:48" (1/1) ... [2022-11-18 20:01:48,685 INFO L138 Inliner]: procedures = 119, calls = 39, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 159 [2022-11-18 20:01:48,685 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 20:01:48,686 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 20:01:48,686 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 20:01:48,686 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 20:01:48,695 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:01:48" (1/1) ... [2022-11-18 20:01:48,696 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:01:48" (1/1) ... [2022-11-18 20:01:48,699 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:01:48" (1/1) ... [2022-11-18 20:01:48,700 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:01:48" (1/1) ... [2022-11-18 20:01:48,709 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:01:48" (1/1) ... [2022-11-18 20:01:48,714 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:01:48" (1/1) ... [2022-11-18 20:01:48,726 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:01:48" (1/1) ... [2022-11-18 20:01:48,727 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:01:48" (1/1) ... [2022-11-18 20:01:48,730 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 20:01:48,731 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 20:01:48,731 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 20:01:48,731 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 20:01:48,732 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:01:48" (1/1) ... [2022-11-18 20:01:48,739 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:01:48,752 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a779140c-df19-4a8b-87ae-1fff73edbef4/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:01:48,767 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a779140c-df19-4a8b-87ae-1fff73edbef4/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 20:01:48,769 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a779140c-df19-4a8b-87ae-1fff73edbef4/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 20:01:48,805 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 20:01:48,805 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 20:01:48,805 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-18 20:01:48,805 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 20:01:48,805 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-18 20:01:48,805 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-18 20:01:48,806 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 20:01:48,806 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 20:01:48,806 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 20:01:48,806 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 20:01:48,952 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 20:01:48,954 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 20:01:49,596 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 20:01:49,604 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 20:01:49,604 INFO L300 CfgBuilder]: Removed 17 assume(true) statements. [2022-11-18 20:01:49,606 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:01:49 BoogieIcfgContainer [2022-11-18 20:01:49,607 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 20:01:49,609 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 20:01:49,610 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 20:01:49,614 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 20:01:49,614 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:01:48" (1/3) ... [2022-11-18 20:01:49,615 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69b9c107 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:01:49, skipping insertion in model container [2022-11-18 20:01:49,615 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:01:48" (2/3) ... [2022-11-18 20:01:49,615 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69b9c107 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:01:49, skipping insertion in model container [2022-11-18 20:01:49,616 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:01:49" (3/3) ... [2022-11-18 20:01:49,617 INFO L112 eAbstractionObserver]: Analyzing ICFG dll-rb-cnstr_1-1.i [2022-11-18 20:01:49,637 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 20:01:49,637 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 71 error locations. [2022-11-18 20:01:49,687 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:01:49,694 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;@37b612e6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:01:49,694 INFO L358 AbstractCegarLoop]: Starting to check reachability of 71 error locations. [2022-11-18 20:01:49,699 INFO L276 IsEmpty]: Start isEmpty. Operand has 156 states, 84 states have (on average 2.2023809523809526) internal successors, (185), 155 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:01:49,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-18 20:01:49,706 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:01:49,706 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-18 20:01:49,707 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 68 more)] === [2022-11-18 20:01:49,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:01:49,713 INFO L85 PathProgramCache]: Analyzing trace with hash 29857, now seen corresponding path program 1 times [2022-11-18 20:01:49,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:01:49,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100634312] [2022-11-18 20:01:49,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:01:49,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:01:49,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:49,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:01:49,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:01:49,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100634312] [2022-11-18 20:01:49,969 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100634312] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:01:49,971 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:01:49,971 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 20:01:49,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630386705] [2022-11-18 20:01:49,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:01:49,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:01:49,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:01:50,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:01:50,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:01:50,024 INFO L87 Difference]: Start difference. First operand has 156 states, 84 states have (on average 2.2023809523809526) internal successors, (185), 155 states have internal predecessors, (185), 0 states have call successors, (0), 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 3 states, 2 states have (on average 1.5) internal successors, (3), 3 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) [2022-11-18 20:01:50,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:01:50,300 INFO L93 Difference]: Finished difference Result 157 states and 162 transitions. [2022-11-18 20:01:50,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:01:50,303 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 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 [2022-11-18 20:01:50,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:01:50,316 INFO L225 Difference]: With dead ends: 157 [2022-11-18 20:01:50,316 INFO L226 Difference]: Without dead ends: 153 [2022-11-18 20:01:50,318 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:01:50,322 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 137 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 20:01:50,324 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 95 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 20:01:50,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2022-11-18 20:01:50,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 149. [2022-11-18 20:01:50,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 85 states have (on average 1.8352941176470587) internal successors, (156), 148 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:01:50,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 156 transitions. [2022-11-18 20:01:50,381 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 156 transitions. Word has length 3 [2022-11-18 20:01:50,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:01:50,381 INFO L495 AbstractCegarLoop]: Abstraction has 149 states and 156 transitions. [2022-11-18 20:01:50,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 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) [2022-11-18 20:01:50,383 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 156 transitions. [2022-11-18 20:01:50,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-18 20:01:50,383 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:01:50,383 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-18 20:01:50,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 20:01:50,383 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 68 more)] === [2022-11-18 20:01:50,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:01:50,385 INFO L85 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2022-11-18 20:01:50,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:01:50,386 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29400476] [2022-11-18 20:01:50,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:01:50,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:01:50,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:50,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:01:50,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:01:50,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29400476] [2022-11-18 20:01:50,518 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29400476] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:01:50,518 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:01:50,518 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 20:01:50,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863602097] [2022-11-18 20:01:50,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:01:50,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:01:50,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:01:50,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:01:50,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:01:50,521 INFO L87 Difference]: Start difference. First operand 149 states and 156 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 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) [2022-11-18 20:01:50,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:01:50,683 INFO L93 Difference]: Finished difference Result 166 states and 172 transitions. [2022-11-18 20:01:50,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:01:50,684 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 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 [2022-11-18 20:01:50,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:01:50,685 INFO L225 Difference]: With dead ends: 166 [2022-11-18 20:01:50,686 INFO L226 Difference]: Without dead ends: 166 [2022-11-18 20:01:50,686 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:01:50,687 INFO L413 NwaCegarLoop]: 87 mSDtfsCounter, 131 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:01:50,688 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 100 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:01:50,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2022-11-18 20:01:50,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 153. [2022-11-18 20:01:50,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 92 states have (on average 1.7391304347826086) internal successors, (160), 152 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:01:50,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 160 transitions. [2022-11-18 20:01:50,697 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 160 transitions. Word has length 3 [2022-11-18 20:01:50,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:01:50,698 INFO L495 AbstractCegarLoop]: Abstraction has 153 states and 160 transitions. [2022-11-18 20:01:50,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 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) [2022-11-18 20:01:50,698 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 160 transitions. [2022-11-18 20:01:50,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-18 20:01:50,699 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:01:50,699 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:01:50,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 20:01:50,699 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 68 more)] === [2022-11-18 20:01:50,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:01:50,700 INFO L85 PathProgramCache]: Analyzing trace with hash 1837112042, now seen corresponding path program 1 times [2022-11-18 20:01:50,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:01:50,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260660415] [2022-11-18 20:01:50,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:01:50,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:01:50,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:50,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:01:50,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:01:50,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260660415] [2022-11-18 20:01:50,932 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260660415] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:01:50,932 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:01:50,932 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:01:50,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449032517] [2022-11-18 20:01:50,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:01:50,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:01:50,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:01:50,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:01:50,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:01:50,934 INFO L87 Difference]: Start difference. First operand 153 states and 160 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:01:51,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:01:51,128 INFO L93 Difference]: Finished difference Result 154 states and 162 transitions. [2022-11-18 20:01:51,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:01:51,128 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-18 20:01:51,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:01:51,129 INFO L225 Difference]: With dead ends: 154 [2022-11-18 20:01:51,130 INFO L226 Difference]: Without dead ends: 154 [2022-11-18 20:01:51,130 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:01:51,131 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 215 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 20:01:51,132 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [215 Valid, 77 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 20:01:51,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2022-11-18 20:01:51,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 140. [2022-11-18 20:01:51,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 94 states have (on average 1.5851063829787233) internal successors, (149), 139 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:01:51,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 149 transitions. [2022-11-18 20:01:51,140 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 149 transitions. Word has length 9 [2022-11-18 20:01:51,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:01:51,141 INFO L495 AbstractCegarLoop]: Abstraction has 140 states and 149 transitions. [2022-11-18 20:01:51,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:01:51,141 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 149 transitions. [2022-11-18 20:01:51,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-18 20:01:51,142 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:01:51,142 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:01:51,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 20:01:51,143 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 68 more)] === [2022-11-18 20:01:51,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:01:51,144 INFO L85 PathProgramCache]: Analyzing trace with hash 1837112043, now seen corresponding path program 1 times [2022-11-18 20:01:51,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:01:51,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266141001] [2022-11-18 20:01:51,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:01:51,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:01:51,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:51,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:01:51,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:01:51,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266141001] [2022-11-18 20:01:51,443 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266141001] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:01:51,443 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:01:51,443 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:01:51,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700441526] [2022-11-18 20:01:51,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:01:51,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:01:51,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:01:51,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:01:51,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:01:51,446 INFO L87 Difference]: Start difference. First operand 140 states and 149 transitions. Second operand has 6 states, 5 states have (on average 1.8) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:01:51,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:01:51,801 INFO L93 Difference]: Finished difference Result 179 states and 189 transitions. [2022-11-18 20:01:51,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:01:51,802 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-18 20:01:51,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:01:51,803 INFO L225 Difference]: With dead ends: 179 [2022-11-18 20:01:51,803 INFO L226 Difference]: Without dead ends: 179 [2022-11-18 20:01:51,803 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:01:51,812 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 324 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 324 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 20:01:51,814 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [324 Valid, 140 Invalid, 293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 20:01:51,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2022-11-18 20:01:51,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 150. [2022-11-18 20:01:51,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 105 states have (on average 1.542857142857143) internal successors, (162), 149 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:01:51,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 162 transitions. [2022-11-18 20:01:51,835 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 162 transitions. Word has length 9 [2022-11-18 20:01:51,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:01:51,835 INFO L495 AbstractCegarLoop]: Abstraction has 150 states and 162 transitions. [2022-11-18 20:01:51,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:01:51,836 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 162 transitions. [2022-11-18 20:01:51,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-18 20:01:51,836 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:01:51,836 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:01:51,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 20:01:51,837 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 68 more)] === [2022-11-18 20:01:51,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:01:51,838 INFO L85 PathProgramCache]: Analyzing trace with hash 233166301, now seen corresponding path program 1 times [2022-11-18 20:01:51,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:01:51,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244252587] [2022-11-18 20:01:51,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:01:51,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:01:51,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:51,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:01:51,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:01:51,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244252587] [2022-11-18 20:01:51,914 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244252587] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:01:51,915 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:01:51,915 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 20:01:51,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597685049] [2022-11-18 20:01:51,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:01:51,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:01:51,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:01:51,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:01:51,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:01:51,918 INFO L87 Difference]: Start difference. First operand 150 states and 162 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 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) [2022-11-18 20:01:52,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:01:52,105 INFO L93 Difference]: Finished difference Result 164 states and 172 transitions. [2022-11-18 20:01:52,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:01:52,109 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 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 [2022-11-18 20:01:52,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:01:52,110 INFO L225 Difference]: With dead ends: 164 [2022-11-18 20:01:52,110 INFO L226 Difference]: Without dead ends: 164 [2022-11-18 20:01:52,112 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:01:52,113 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 150 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 20:01:52,117 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 175 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 20:01:52,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2022-11-18 20:01:52,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 148. [2022-11-18 20:01:52,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 104 states have (on average 1.5192307692307692) internal successors, (158), 147 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:01:52,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 158 transitions. [2022-11-18 20:01:52,132 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 158 transitions. Word has length 11 [2022-11-18 20:01:52,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:01:52,132 INFO L495 AbstractCegarLoop]: Abstraction has 148 states and 158 transitions. [2022-11-18 20:01:52,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 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) [2022-11-18 20:01:52,133 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 158 transitions. [2022-11-18 20:01:52,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-18 20:01:52,134 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:01:52,135 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:01:52,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 20:01:52,135 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 68 more)] === [2022-11-18 20:01:52,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:01:52,136 INFO L85 PathProgramCache]: Analyzing trace with hash -1363413642, now seen corresponding path program 1 times [2022-11-18 20:01:52,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:01:52,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921412864] [2022-11-18 20:01:52,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:01:52,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:01:52,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:52,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:01:52,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:01:52,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921412864] [2022-11-18 20:01:52,375 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921412864] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:01:52,375 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:01:52,375 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 20:01:52,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622194576] [2022-11-18 20:01:52,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:01:52,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:01:52,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:01:52,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:01:52,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:01:52,377 INFO L87 Difference]: Start difference. First operand 148 states and 158 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:01:52,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:01:52,582 INFO L93 Difference]: Finished difference Result 147 states and 156 transitions. [2022-11-18 20:01:52,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:01:52,583 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-18 20:01:52,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:01:52,583 INFO L225 Difference]: With dead ends: 147 [2022-11-18 20:01:52,583 INFO L226 Difference]: Without dead ends: 147 [2022-11-18 20:01:52,584 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:01:52,584 INFO L413 NwaCegarLoop]: 124 mSDtfsCounter, 7 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 323 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 20:01:52,585 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 323 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 20:01:52,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2022-11-18 20:01:52,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2022-11-18 20:01:52,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 104 states have (on average 1.5) internal successors, (156), 146 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:01:52,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 156 transitions. [2022-11-18 20:01:52,589 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 156 transitions. Word has length 12 [2022-11-18 20:01:52,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:01:52,589 INFO L495 AbstractCegarLoop]: Abstraction has 147 states and 156 transitions. [2022-11-18 20:01:52,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:01:52,589 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 156 transitions. [2022-11-18 20:01:52,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-18 20:01:52,589 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:01:52,590 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:01:52,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-18 20:01:52,590 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 68 more)] === [2022-11-18 20:01:52,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:01:52,595 INFO L85 PathProgramCache]: Analyzing trace with hash -1363413643, now seen corresponding path program 1 times [2022-11-18 20:01:52,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:01:52,595 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512443981] [2022-11-18 20:01:52,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:01:52,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:01:52,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:52,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:01:52,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:01:52,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512443981] [2022-11-18 20:01:52,757 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512443981] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:01:52,757 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:01:52,757 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 20:01:52,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669778694] [2022-11-18 20:01:52,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:01:52,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:01:52,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:01:52,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:01:52,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:01:52,759 INFO L87 Difference]: Start difference. First operand 147 states and 156 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:01:52,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:01:52,927 INFO L93 Difference]: Finished difference Result 146 states and 154 transitions. [2022-11-18 20:01:52,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 20:01:52,928 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-18 20:01:52,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:01:52,929 INFO L225 Difference]: With dead ends: 146 [2022-11-18 20:01:52,929 INFO L226 Difference]: Without dead ends: 146 [2022-11-18 20:01:52,930 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:01:52,932 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 8 mSDsluCounter, 215 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 338 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:01:52,932 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 338 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:01:52,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2022-11-18 20:01:52,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2022-11-18 20:01:52,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 104 states have (on average 1.4807692307692308) internal successors, (154), 145 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:01:52,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 154 transitions. [2022-11-18 20:01:52,937 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 154 transitions. Word has length 12 [2022-11-18 20:01:52,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:01:52,938 INFO L495 AbstractCegarLoop]: Abstraction has 146 states and 154 transitions. [2022-11-18 20:01:52,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:01:52,938 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 154 transitions. [2022-11-18 20:01:52,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-18 20:01:52,939 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:01:52,939 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:01:52,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-18 20:01:52,941 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 68 more)] === [2022-11-18 20:01:52,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:01:52,942 INFO L85 PathProgramCache]: Analyzing trace with hash 1299214142, now seen corresponding path program 1 times [2022-11-18 20:01:52,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:01:52,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769794176] [2022-11-18 20:01:52,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:01:52,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:01:52,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:53,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:01:53,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:01:53,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769794176] [2022-11-18 20:01:53,142 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769794176] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:01:53,142 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:01:53,142 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 20:01:53,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693602190] [2022-11-18 20:01:53,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:01:53,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:01:53,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:01:53,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:01:53,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:01:53,149 INFO L87 Difference]: Start difference. First operand 146 states and 154 transitions. Second operand has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 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) [2022-11-18 20:01:53,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:01:53,418 INFO L93 Difference]: Finished difference Result 200 states and 212 transitions. [2022-11-18 20:01:53,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:01:53,418 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 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 [2022-11-18 20:01:53,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:01:53,419 INFO L225 Difference]: With dead ends: 200 [2022-11-18 20:01:53,419 INFO L226 Difference]: Without dead ends: 200 [2022-11-18 20:01:53,420 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-11-18 20:01:53,420 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 204 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 294 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 20:01:53,421 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [204 Valid, 294 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 20:01:53,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2022-11-18 20:01:53,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 151. [2022-11-18 20:01:53,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 109 states have (on average 1.4587155963302751) internal successors, (159), 150 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:01:53,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 159 transitions. [2022-11-18 20:01:53,425 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 159 transitions. Word has length 14 [2022-11-18 20:01:53,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:01:53,426 INFO L495 AbstractCegarLoop]: Abstraction has 151 states and 159 transitions. [2022-11-18 20:01:53,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 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) [2022-11-18 20:01:53,426 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 159 transitions. [2022-11-18 20:01:53,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-18 20:01:53,427 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:01:53,427 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:01:53,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-18 20:01:53,427 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 68 more)] === [2022-11-18 20:01:53,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:01:53,428 INFO L85 PathProgramCache]: Analyzing trace with hash 1546362871, now seen corresponding path program 1 times [2022-11-18 20:01:53,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:01:53,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398798936] [2022-11-18 20:01:53,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:01:53,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:01:53,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:53,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:01:53,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:01:53,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398798936] [2022-11-18 20:01:53,703 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398798936] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:01:53,704 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:01:53,704 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-18 20:01:53,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395095293] [2022-11-18 20:01:53,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:01:53,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 20:01:53,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:01:53,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 20:01:53,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-11-18 20:01:53,707 INFO L87 Difference]: Start difference. First operand 151 states and 159 transitions. Second operand has 9 states, 8 states have (on average 2.0) internal successors, (16), 9 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) [2022-11-18 20:01:54,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:01:54,060 INFO L93 Difference]: Finished difference Result 150 states and 158 transitions. [2022-11-18 20:01:54,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 20:01:54,060 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.0) internal successors, (16), 9 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 [2022-11-18 20:01:54,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:01:54,061 INFO L225 Difference]: With dead ends: 150 [2022-11-18 20:01:54,061 INFO L226 Difference]: Without dead ends: 150 [2022-11-18 20:01:54,061 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2022-11-18 20:01:54,062 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 191 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 351 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 221 SdHoareTripleChecker+Invalid, 365 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 351 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 20:01:54,062 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [191 Valid, 221 Invalid, 365 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 351 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 20:01:54,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2022-11-18 20:01:54,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2022-11-18 20:01:54,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 109 states have (on average 1.4495412844036697) internal successors, (158), 149 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:01:54,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 158 transitions. [2022-11-18 20:01:54,066 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 158 transitions. Word has length 16 [2022-11-18 20:01:54,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:01:54,066 INFO L495 AbstractCegarLoop]: Abstraction has 150 states and 158 transitions. [2022-11-18 20:01:54,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.0) internal successors, (16), 9 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) [2022-11-18 20:01:54,068 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 158 transitions. [2022-11-18 20:01:54,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-18 20:01:54,069 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:01:54,069 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:01:54,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-18 20:01:54,069 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 68 more)] === [2022-11-18 20:01:54,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:01:54,070 INFO L85 PathProgramCache]: Analyzing trace with hash 1546362872, now seen corresponding path program 1 times [2022-11-18 20:01:54,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:01:54,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73205063] [2022-11-18 20:01:54,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:01:54,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:01:54,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:54,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:01:54,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:01:54,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73205063] [2022-11-18 20:01:54,535 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73205063] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:01:54,535 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:01:54,535 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-18 20:01:54,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457773956] [2022-11-18 20:01:54,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:01:54,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 20:01:54,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:01:54,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 20:01:54,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-18 20:01:54,537 INFO L87 Difference]: Start difference. First operand 150 states and 158 transitions. Second operand has 10 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 10 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) [2022-11-18 20:01:55,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:01:55,281 INFO L93 Difference]: Finished difference Result 168 states and 177 transitions. [2022-11-18 20:01:55,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-18 20:01:55,282 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 10 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 [2022-11-18 20:01:55,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:01:55,283 INFO L225 Difference]: With dead ends: 168 [2022-11-18 20:01:55,283 INFO L226 Difference]: Without dead ends: 168 [2022-11-18 20:01:55,283 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=140, Invalid=366, Unknown=0, NotChecked=0, Total=506 [2022-11-18 20:01:55,284 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 238 mSDsluCounter, 289 mSDsCounter, 0 mSdLazyCounter, 579 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 238 SdHoareTripleChecker+Valid, 355 SdHoareTripleChecker+Invalid, 606 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 579 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 20:01:55,284 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [238 Valid, 355 Invalid, 606 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 579 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-18 20:01:55,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2022-11-18 20:01:55,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 154. [2022-11-18 20:01:55,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 119 states have (on average 1.3949579831932772) internal successors, (166), 153 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:01:55,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 166 transitions. [2022-11-18 20:01:55,288 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 166 transitions. Word has length 16 [2022-11-18 20:01:55,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:01:55,288 INFO L495 AbstractCegarLoop]: Abstraction has 154 states and 166 transitions. [2022-11-18 20:01:55,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 10 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) [2022-11-18 20:01:55,288 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 166 transitions. [2022-11-18 20:01:55,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-18 20:01:55,289 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:01:55,289 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:01:55,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-18 20:01:55,289 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr43REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 68 more)] === [2022-11-18 20:01:55,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:01:55,290 INFO L85 PathProgramCache]: Analyzing trace with hash -1997554901, now seen corresponding path program 1 times [2022-11-18 20:01:55,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:01:55,290 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71139846] [2022-11-18 20:01:55,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:01:55,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:01:55,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:55,504 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:01:55,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:01:55,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71139846] [2022-11-18 20:01:55,505 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71139846] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:01:55,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1506479736] [2022-11-18 20:01:55,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:01:55,505 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:01:55,505 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a779140c-df19-4a8b-87ae-1fff73edbef4/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:01:55,509 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a779140c-df19-4a8b-87ae-1fff73edbef4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:01:55,545 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a779140c-df19-4a8b-87ae-1fff73edbef4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 20:01:55,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:55,618 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 31 conjunts are in the unsatisfiable core [2022-11-18 20:01:55,632 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:01:55,710 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 20:01:55,744 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 20:01:55,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:01:55,786 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-18 20:01:55,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:01:55,796 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-18 20:01:55,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:01:55,816 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-18 20:01:55,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:01:55,824 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-18 20:01:55,944 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:01:55,945 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-18 20:01:55,951 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:01:55,954 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:01:55,954 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 10 [2022-11-18 20:01:55,968 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:01:55,968 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:01:56,482 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-18 20:01:56,488 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2022-11-18 20:01:56,499 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-18 20:01:56,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:01:56,516 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:01:56,516 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1506479736] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:01:56,516 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:01:56,517 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 12 [2022-11-18 20:01:56,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989975380] [2022-11-18 20:01:56,517 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:01:56,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 20:01:56,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:01:56,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 20:01:56,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2022-11-18 20:01:56,519 INFO L87 Difference]: Start difference. First operand 154 states and 166 transitions. Second operand has 12 states, 12 states have (on average 4.583333333333333) internal successors, (55), 12 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:01:56,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:01:56,981 INFO L93 Difference]: Finished difference Result 205 states and 221 transitions. [2022-11-18 20:01:56,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 20:01:56,982 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.583333333333333) internal successors, (55), 12 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-11-18 20:01:56,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:01:56,983 INFO L225 Difference]: With dead ends: 205 [2022-11-18 20:01:56,983 INFO L226 Difference]: Without dead ends: 205 [2022-11-18 20:01:56,983 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 36 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2022-11-18 20:01:56,984 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 357 mSDsluCounter, 420 mSDsCounter, 0 mSdLazyCounter, 331 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 357 SdHoareTripleChecker+Valid, 503 SdHoareTripleChecker+Invalid, 410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 331 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 54 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 20:01:56,984 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [357 Valid, 503 Invalid, 410 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 331 Invalid, 0 Unknown, 54 Unchecked, 0.3s Time] [2022-11-18 20:01:56,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2022-11-18 20:01:56,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 161. [2022-11-18 20:01:56,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 126 states have (on average 1.380952380952381) internal successors, (174), 160 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:01:56,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 174 transitions. [2022-11-18 20:01:56,988 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 174 transitions. Word has length 21 [2022-11-18 20:01:56,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:01:56,988 INFO L495 AbstractCegarLoop]: Abstraction has 161 states and 174 transitions. [2022-11-18 20:01:56,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.583333333333333) internal successors, (55), 12 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:01:56,988 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 174 transitions. [2022-11-18 20:01:56,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-18 20:01:56,989 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:01:56,989 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] [2022-11-18 20:01:57,001 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a779140c-df19-4a8b-87ae-1fff73edbef4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-18 20:01:57,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a779140c-df19-4a8b-87ae-1fff73edbef4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-18 20:01:57,191 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr47ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 68 more)] === [2022-11-18 20:01:57,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:01:57,191 INFO L85 PathProgramCache]: Analyzing trace with hash -2039573154, now seen corresponding path program 1 times [2022-11-18 20:01:57,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:01:57,191 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19383077] [2022-11-18 20:01:57,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:01:57,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:01:57,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:57,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:01:57,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:01:57,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19383077] [2022-11-18 20:01:57,313 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19383077] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:01:57,313 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:01:57,313 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:01:57,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071709492] [2022-11-18 20:01:57,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:01:57,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:01:57,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:01:57,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:01:57,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:01:57,315 INFO L87 Difference]: Start difference. First operand 161 states and 174 transitions. Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:01:57,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:01:57,495 INFO L93 Difference]: Finished difference Result 165 states and 176 transitions. [2022-11-18 20:01:57,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:01:57,495 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-11-18 20:01:57,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:01:57,496 INFO L225 Difference]: With dead ends: 165 [2022-11-18 20:01:57,496 INFO L226 Difference]: Without dead ends: 165 [2022-11-18 20:01:57,496 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:01:57,497 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 26 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 315 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 20:01:57,497 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 315 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 20:01:57,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2022-11-18 20:01:57,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 160. [2022-11-18 20:01:57,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 125 states have (on average 1.368) internal successors, (171), 159 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:01:57,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 171 transitions. [2022-11-18 20:01:57,501 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 171 transitions. Word has length 21 [2022-11-18 20:01:57,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:01:57,501 INFO L495 AbstractCegarLoop]: Abstraction has 160 states and 171 transitions. [2022-11-18 20:01:57,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:01:57,501 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 171 transitions. [2022-11-18 20:01:57,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-18 20:01:57,502 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:01:57,502 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] [2022-11-18 20:01:57,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-18 20:01:57,503 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 68 more)] === [2022-11-18 20:01:57,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:01:57,504 INFO L85 PathProgramCache]: Analyzing trace with hash 1819127547, now seen corresponding path program 1 times [2022-11-18 20:01:57,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:01:57,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309082764] [2022-11-18 20:01:57,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:01:57,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:01:57,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:57,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:01:57,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:01:57,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309082764] [2022-11-18 20:01:57,609 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309082764] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:01:57,609 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:01:57,609 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 20:01:57,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810100032] [2022-11-18 20:01:57,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:01:57,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:01:57,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:01:57,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:01:57,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:01:57,610 INFO L87 Difference]: Start difference. First operand 160 states and 171 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:01:57,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:01:57,750 INFO L93 Difference]: Finished difference Result 162 states and 172 transitions. [2022-11-18 20:01:57,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:01:57,751 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-11-18 20:01:57,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:01:57,752 INFO L225 Difference]: With dead ends: 162 [2022-11-18 20:01:57,752 INFO L226 Difference]: Without dead ends: 162 [2022-11-18 20:01:57,752 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:01:57,752 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 21 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 268 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:01:57,753 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 268 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:01:57,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2022-11-18 20:01:57,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 158. [2022-11-18 20:01:57,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 124 states have (on average 1.3548387096774193) internal successors, (168), 157 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:01:57,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 168 transitions. [2022-11-18 20:01:57,757 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 168 transitions. Word has length 22 [2022-11-18 20:01:57,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:01:57,757 INFO L495 AbstractCegarLoop]: Abstraction has 158 states and 168 transitions. [2022-11-18 20:01:57,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:01:57,757 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 168 transitions. [2022-11-18 20:01:57,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-18 20:01:57,758 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:01:57,758 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] [2022-11-18 20:01:57,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-18 20:01:57,758 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 68 more)] === [2022-11-18 20:01:57,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:01:57,759 INFO L85 PathProgramCache]: Analyzing trace with hash 391604008, now seen corresponding path program 1 times [2022-11-18 20:01:57,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:01:57,759 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934794374] [2022-11-18 20:01:57,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:01:57,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:01:57,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:57,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:01:57,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:01:57,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934794374] [2022-11-18 20:01:57,903 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934794374] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:01:57,903 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:01:57,903 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 20:01:57,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904953471] [2022-11-18 20:01:57,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:01:57,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:01:57,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:01:57,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:01:57,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:01:57,906 INFO L87 Difference]: Start difference. First operand 158 states and 168 transitions. Second operand has 5 states, 4 states have (on average 6.0) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:01:58,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:01:58,070 INFO L93 Difference]: Finished difference Result 157 states and 167 transitions. [2022-11-18 20:01:58,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 20:01:58,071 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.0) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 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 24 [2022-11-18 20:01:58,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:01:58,071 INFO L225 Difference]: With dead ends: 157 [2022-11-18 20:01:58,072 INFO L226 Difference]: Without dead ends: 157 [2022-11-18 20:01:58,072 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:01:58,072 INFO L413 NwaCegarLoop]: 114 mSDtfsCounter, 7 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 313 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:01:58,073 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 313 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:01:58,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2022-11-18 20:01:58,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2022-11-18 20:01:58,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 124 states have (on average 1.346774193548387) internal successors, (167), 156 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:01:58,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 167 transitions. [2022-11-18 20:01:58,078 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 167 transitions. Word has length 24 [2022-11-18 20:01:58,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:01:58,078 INFO L495 AbstractCegarLoop]: Abstraction has 157 states and 167 transitions. [2022-11-18 20:01:58,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.0) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:01:58,079 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 167 transitions. [2022-11-18 20:01:58,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-18 20:01:58,083 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:01:58,084 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] [2022-11-18 20:01:58,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-18 20:01:58,084 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 68 more)] === [2022-11-18 20:01:58,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:01:58,085 INFO L85 PathProgramCache]: Analyzing trace with hash 391604009, now seen corresponding path program 1 times [2022-11-18 20:01:58,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:01:58,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119994722] [2022-11-18 20:01:58,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:01:58,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:01:58,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:58,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:01:58,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:01:58,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119994722] [2022-11-18 20:01:58,320 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119994722] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:01:58,320 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:01:58,321 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 20:01:58,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341218169] [2022-11-18 20:01:58,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:01:58,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:01:58,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:01:58,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:01:58,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:01:58,322 INFO L87 Difference]: Start difference. First operand 157 states and 167 transitions. Second operand has 5 states, 4 states have (on average 6.0) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:01:58,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:01:58,511 INFO L93 Difference]: Finished difference Result 156 states and 166 transitions. [2022-11-18 20:01:58,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:01:58,512 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.0) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 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 24 [2022-11-18 20:01:58,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:01:58,512 INFO L225 Difference]: With dead ends: 156 [2022-11-18 20:01:58,512 INFO L226 Difference]: Without dead ends: 156 [2022-11-18 20:01:58,513 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:01:58,513 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 3 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 303 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 20:01:58,514 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 303 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 20:01:58,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2022-11-18 20:01:58,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 156. [2022-11-18 20:01:58,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 124 states have (on average 1.3387096774193548) internal successors, (166), 155 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:01:58,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 166 transitions. [2022-11-18 20:01:58,517 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 166 transitions. Word has length 24 [2022-11-18 20:01:58,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:01:58,517 INFO L495 AbstractCegarLoop]: Abstraction has 156 states and 166 transitions. [2022-11-18 20:01:58,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.0) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:01:58,518 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 166 transitions. [2022-11-18 20:01:58,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-18 20:01:58,518 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:01:58,518 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] [2022-11-18 20:01:58,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-18 20:01:58,518 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 68 more)] === [2022-11-18 20:01:58,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:01:58,519 INFO L85 PathProgramCache]: Analyzing trace with hash -264588155, now seen corresponding path program 1 times [2022-11-18 20:01:58,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:01:58,519 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094852229] [2022-11-18 20:01:58,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:01:58,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:01:58,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:58,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:01:58,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:01:58,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094852229] [2022-11-18 20:01:58,724 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094852229] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:01:58,724 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:01:58,724 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 20:01:58,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649996999] [2022-11-18 20:01:58,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:01:58,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:01:58,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:01:58,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:01:58,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:01:58,726 INFO L87 Difference]: Start difference. First operand 156 states and 166 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:01:58,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:01:58,844 INFO L93 Difference]: Finished difference Result 155 states and 164 transitions. [2022-11-18 20:01:58,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:01:58,845 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 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 25 [2022-11-18 20:01:58,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:01:58,845 INFO L225 Difference]: With dead ends: 155 [2022-11-18 20:01:58,845 INFO L226 Difference]: Without dead ends: 155 [2022-11-18 20:01:58,846 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:01:58,846 INFO L413 NwaCegarLoop]: 107 mSDtfsCounter, 16 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 255 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:01:58,847 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 255 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:01:58,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2022-11-18 20:01:58,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 154. [2022-11-18 20:01:58,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 123 states have (on average 1.3252032520325203) internal successors, (163), 153 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:01:58,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 163 transitions. [2022-11-18 20:01:58,850 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 163 transitions. Word has length 25 [2022-11-18 20:01:58,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:01:58,851 INFO L495 AbstractCegarLoop]: Abstraction has 154 states and 163 transitions. [2022-11-18 20:01:58,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:01:58,851 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 163 transitions. [2022-11-18 20:01:58,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-18 20:01:58,852 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:01:58,852 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] [2022-11-18 20:01:58,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-18 20:01:58,852 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr68ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 68 more)] === [2022-11-18 20:01:58,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:01:58,853 INFO L85 PathProgramCache]: Analyzing trace with hash 201988172, now seen corresponding path program 1 times [2022-11-18 20:01:58,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:01:58,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235875666] [2022-11-18 20:01:58,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:01:58,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:01:58,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:58,892 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:01:58,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:01:58,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235875666] [2022-11-18 20:01:58,893 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235875666] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:01:58,893 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:01:58,893 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 20:01:58,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127255816] [2022-11-18 20:01:58,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:01:58,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:01:58,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:01:58,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:01:58,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:01:58,895 INFO L87 Difference]: Start difference. First operand 154 states and 163 transitions. Second operand has 3 states, 2 states have (on average 13.5) 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) [2022-11-18 20:01:58,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:01:58,938 INFO L93 Difference]: Finished difference Result 156 states and 165 transitions. [2022-11-18 20:01:58,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:01:58,939 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 13.5) 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 [2022-11-18 20:01:58,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:01:58,939 INFO L225 Difference]: With dead ends: 156 [2022-11-18 20:01:58,940 INFO L226 Difference]: Without dead ends: 156 [2022-11-18 20:01:58,940 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:01:58,941 INFO L413 NwaCegarLoop]: 101 mSDtfsCounter, 72 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:01:58,941 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 114 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 20:01:58,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2022-11-18 20:01:58,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 156. [2022-11-18 20:01:58,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 125 states have (on average 1.32) internal successors, (165), 155 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:01:58,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 165 transitions. [2022-11-18 20:01:58,945 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 165 transitions. Word has length 27 [2022-11-18 20:01:58,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:01:58,945 INFO L495 AbstractCegarLoop]: Abstraction has 156 states and 165 transitions. [2022-11-18 20:01:58,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 13.5) 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) [2022-11-18 20:01:58,945 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 165 transitions. [2022-11-18 20:01:58,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-18 20:01:58,946 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:01:58,946 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] [2022-11-18 20:01:58,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-18 20:01:58,946 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 68 more)] === [2022-11-18 20:01:58,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:01:58,947 INFO L85 PathProgramCache]: Analyzing trace with hash -866016759, now seen corresponding path program 1 times [2022-11-18 20:01:58,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:01:58,947 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389362863] [2022-11-18 20:01:58,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:01:58,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:01:58,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:59,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:01:59,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:01:59,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389362863] [2022-11-18 20:01:59,089 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389362863] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:01:59,089 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:01:59,089 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:01:59,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324420828] [2022-11-18 20:01:59,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:01:59,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:01:59,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:01:59,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:01:59,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:01:59,091 INFO L87 Difference]: Start difference. First operand 156 states and 165 transitions. Second operand has 6 states, 6 states have (on average 4.5) internal successors, (27), 5 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) [2022-11-18 20:01:59,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:01:59,265 INFO L93 Difference]: Finished difference Result 169 states and 178 transitions. [2022-11-18 20:01:59,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 20:01:59,265 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 5 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 [2022-11-18 20:01:59,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:01:59,266 INFO L225 Difference]: With dead ends: 169 [2022-11-18 20:01:59,266 INFO L226 Difference]: Without dead ends: 169 [2022-11-18 20:01:59,267 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:01:59,267 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 266 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 266 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:01:59,268 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [266 Valid, 172 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:01:59,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2022-11-18 20:01:59,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 154. [2022-11-18 20:01:59,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 124 states have (on average 1.3064516129032258) internal successors, (162), 153 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:01:59,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 162 transitions. [2022-11-18 20:01:59,271 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 162 transitions. Word has length 27 [2022-11-18 20:01:59,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:01:59,271 INFO L495 AbstractCegarLoop]: Abstraction has 154 states and 162 transitions. [2022-11-18 20:01:59,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 5 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) [2022-11-18 20:01:59,272 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 162 transitions. [2022-11-18 20:01:59,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-18 20:01:59,272 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:01:59,272 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] [2022-11-18 20:01:59,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-18 20:01:59,273 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 68 more)] === [2022-11-18 20:01:59,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:01:59,273 INFO L85 PathProgramCache]: Analyzing trace with hash 1099927530, now seen corresponding path program 1 times [2022-11-18 20:01:59,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:01:59,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265847079] [2022-11-18 20:01:59,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:01:59,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:01:59,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:59,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:01:59,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:01:59,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265847079] [2022-11-18 20:01:59,571 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265847079] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:01:59,571 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:01:59,571 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 20:01:59,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629122526] [2022-11-18 20:01:59,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:01:59,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 20:01:59,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:01:59,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 20:01:59,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:01:59,573 INFO L87 Difference]: Start difference. First operand 154 states and 162 transitions. Second operand has 8 states, 7 states have (on average 4.0) internal successors, (28), 8 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:01:59,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:01:59,927 INFO L93 Difference]: Finished difference Result 154 states and 162 transitions. [2022-11-18 20:01:59,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 20:01:59,928 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.0) internal successors, (28), 8 states have internal predecessors, (28), 0 states have call successors, (0), 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 28 [2022-11-18 20:01:59,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:01:59,928 INFO L225 Difference]: With dead ends: 154 [2022-11-18 20:01:59,928 INFO L226 Difference]: Without dead ends: 154 [2022-11-18 20:01:59,929 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2022-11-18 20:01:59,929 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 58 mSDsluCounter, 264 mSDsCounter, 0 mSdLazyCounter, 397 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 348 SdHoareTripleChecker+Invalid, 407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 20:01:59,929 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 348 Invalid, 407 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 397 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 20:01:59,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2022-11-18 20:01:59,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 153. [2022-11-18 20:01:59,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 124 states have (on average 1.2983870967741935) internal successors, (161), 152 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:01:59,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 161 transitions. [2022-11-18 20:01:59,933 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 161 transitions. Word has length 28 [2022-11-18 20:01:59,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:01:59,933 INFO L495 AbstractCegarLoop]: Abstraction has 153 states and 161 transitions. [2022-11-18 20:01:59,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.0) internal successors, (28), 8 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:01:59,933 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 161 transitions. [2022-11-18 20:01:59,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-18 20:01:59,934 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:01:59,934 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] [2022-11-18 20:01:59,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-18 20:01:59,934 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 68 more)] === [2022-11-18 20:01:59,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:01:59,935 INFO L85 PathProgramCache]: Analyzing trace with hash 1099927531, now seen corresponding path program 1 times [2022-11-18 20:01:59,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:01:59,935 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167687577] [2022-11-18 20:01:59,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:01:59,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:01:59,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:02:00,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:02:00,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:02:00,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167687577] [2022-11-18 20:02:00,311 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167687577] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:02:00,311 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:02:00,312 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-18 20:02:00,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379574692] [2022-11-18 20:02:00,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:02:00,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 20:02:00,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:02:00,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 20:02:00,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-11-18 20:02:00,314 INFO L87 Difference]: Start difference. First operand 153 states and 161 transitions. Second operand has 9 states, 8 states have (on average 3.5) internal successors, (28), 9 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:02:00,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:02:00,819 INFO L93 Difference]: Finished difference Result 149 states and 157 transitions. [2022-11-18 20:02:00,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 20:02:00,820 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.5) internal successors, (28), 9 states have internal predecessors, (28), 0 states have call successors, (0), 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 28 [2022-11-18 20:02:00,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:02:00,821 INFO L225 Difference]: With dead ends: 149 [2022-11-18 20:02:00,821 INFO L226 Difference]: Without dead ends: 149 [2022-11-18 20:02:00,821 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2022-11-18 20:02:00,822 INFO L413 NwaCegarLoop]: 95 mSDtfsCounter, 68 mSDsluCounter, 358 mSDsCounter, 0 mSdLazyCounter, 477 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 453 SdHoareTripleChecker+Invalid, 495 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 477 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 20:02:00,822 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 453 Invalid, 495 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 477 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-18 20:02:00,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2022-11-18 20:02:00,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 130. [2022-11-18 20:02:00,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 108 states have (on average 1.2685185185185186) internal successors, (137), 129 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:02:00,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 137 transitions. [2022-11-18 20:02:00,827 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 137 transitions. Word has length 28 [2022-11-18 20:02:00,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:02:00,827 INFO L495 AbstractCegarLoop]: Abstraction has 130 states and 137 transitions. [2022-11-18 20:02:00,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.5) internal successors, (28), 9 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:02:00,828 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 137 transitions. [2022-11-18 20:02:00,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-18 20:02:00,828 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:02:00,829 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] [2022-11-18 20:02:00,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-18 20:02:00,829 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr60REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 68 more)] === [2022-11-18 20:02:00,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:02:00,830 INFO L85 PathProgramCache]: Analyzing trace with hash 2136034553, now seen corresponding path program 1 times [2022-11-18 20:02:00,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:02:00,830 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254432262] [2022-11-18 20:02:00,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:02:00,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:02:00,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:02:01,015 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:02:01,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:02:01,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254432262] [2022-11-18 20:02:01,016 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254432262] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:02:01,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [625703723] [2022-11-18 20:02:01,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:02:01,016 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:02:01,016 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a779140c-df19-4a8b-87ae-1fff73edbef4/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:02:01,017 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a779140c-df19-4a8b-87ae-1fff73edbef4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:02:01,047 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a779140c-df19-4a8b-87ae-1fff73edbef4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 20:02:01,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:02:01,146 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 20:02:01,148 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:02:01,155 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-18 20:02:01,196 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-11-18 20:02:01,208 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:02:01,209 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:02:01,209 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [625703723] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:02:01,209 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:02:01,209 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 9 [2022-11-18 20:02:01,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441977704] [2022-11-18 20:02:01,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:02:01,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:02:01,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:02:01,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:02:01,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-18 20:02:01,213 INFO L87 Difference]: Start difference. First operand 130 states and 137 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 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) [2022-11-18 20:02:01,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:02:01,315 INFO L93 Difference]: Finished difference Result 139 states and 146 transitions. [2022-11-18 20:02:01,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:02:01,316 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 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 [2022-11-18 20:02:01,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:02:01,317 INFO L225 Difference]: With dead ends: 139 [2022-11-18 20:02:01,317 INFO L226 Difference]: Without dead ends: 139 [2022-11-18 20:02:01,317 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-11-18 20:02:01,318 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 7 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:02:01,319 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 238 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:02:01,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2022-11-18 20:02:01,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 133. [2022-11-18 20:02:01,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 111 states have (on average 1.2612612612612613) internal successors, (140), 132 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:02:01,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 140 transitions. [2022-11-18 20:02:01,323 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 140 transitions. Word has length 29 [2022-11-18 20:02:01,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:02:01,323 INFO L495 AbstractCegarLoop]: Abstraction has 133 states and 140 transitions. [2022-11-18 20:02:01,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 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) [2022-11-18 20:02:01,323 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 140 transitions. [2022-11-18 20:02:01,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-18 20:02:01,324 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:02:01,325 INFO L195 NwaCegarLoop]: trace histogram [2, 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] [2022-11-18 20:02:01,335 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a779140c-df19-4a8b-87ae-1fff73edbef4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-18 20:02:01,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a779140c-df19-4a8b-87ae-1fff73edbef4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:02:01,531 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr53REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 68 more)] === [2022-11-18 20:02:01,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:02:01,531 INFO L85 PathProgramCache]: Analyzing trace with hash 180762931, now seen corresponding path program 1 times [2022-11-18 20:02:01,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:02:01,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431105819] [2022-11-18 20:02:01,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:02:01,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:02:01,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:02:01,743 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:02:01,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:02:01,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431105819] [2022-11-18 20:02:01,743 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431105819] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:02:01,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1432458772] [2022-11-18 20:02:01,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:02:01,744 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:02:01,744 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a779140c-df19-4a8b-87ae-1fff73edbef4/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:02:01,745 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a779140c-df19-4a8b-87ae-1fff73edbef4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:02:01,767 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a779140c-df19-4a8b-87ae-1fff73edbef4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 20:02:01,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:02:01,872 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-18 20:02:01,878 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:02:01,883 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 20:02:01,888 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 20:02:01,898 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-18 20:02:01,903 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-18 20:02:01,913 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-18 20:02:01,919 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-18 20:02:02,006 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-18 20:02:02,009 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-18 20:02:02,029 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:02:02,029 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:02:02,134 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:02:02,134 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1432458772] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:02:02,134 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:02:02,134 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6, 6] total 9 [2022-11-18 20:02:02,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171684484] [2022-11-18 20:02:02,135 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:02:02,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 20:02:02,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:02:02,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 20:02:02,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-18 20:02:02,136 INFO L87 Difference]: Start difference. First operand 133 states and 140 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:02:02,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:02:02,676 INFO L93 Difference]: Finished difference Result 181 states and 191 transitions. [2022-11-18 20:02:02,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 20:02:02,678 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 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 30 [2022-11-18 20:02:02,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:02:02,679 INFO L225 Difference]: With dead ends: 181 [2022-11-18 20:02:02,679 INFO L226 Difference]: Without dead ends: 181 [2022-11-18 20:02:02,679 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2022-11-18 20:02:02,680 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 80 mSDsluCounter, 386 mSDsCounter, 0 mSdLazyCounter, 479 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 468 SdHoareTripleChecker+Invalid, 488 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 479 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 20:02:02,680 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 468 Invalid, 488 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 479 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-18 20:02:02,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2022-11-18 20:02:02,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 144. [2022-11-18 20:02:02,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 122 states have (on average 1.2540983606557377) internal successors, (153), 143 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:02:02,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 153 transitions. [2022-11-18 20:02:02,684 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 153 transitions. Word has length 30 [2022-11-18 20:02:02,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:02:02,684 INFO L495 AbstractCegarLoop]: Abstraction has 144 states and 153 transitions. [2022-11-18 20:02:02,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:02:02,684 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 153 transitions. [2022-11-18 20:02:02,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-11-18 20:02:02,685 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:02:02,685 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] [2022-11-18 20:02:02,695 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a779140c-df19-4a8b-87ae-1fff73edbef4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-18 20:02:02,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a779140c-df19-4a8b-87ae-1fff73edbef4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-11-18 20:02:02,891 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr70ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 68 more)] === [2022-11-18 20:02:02,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:02:02,892 INFO L85 PathProgramCache]: Analyzing trace with hash 1308683207, now seen corresponding path program 1 times [2022-11-18 20:02:02,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:02:02,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917806396] [2022-11-18 20:02:02,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:02:02,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:02:02,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:02:02,999 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:02:02,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:02:03,000 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917806396] [2022-11-18 20:02:03,000 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917806396] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:02:03,000 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1144501802] [2022-11-18 20:02:03,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:02:03,000 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:02:03,000 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a779140c-df19-4a8b-87ae-1fff73edbef4/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:02:03,002 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a779140c-df19-4a8b-87ae-1fff73edbef4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:02:03,019 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a779140c-df19-4a8b-87ae-1fff73edbef4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-18 20:02:03,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:02:03,130 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-18 20:02:03,132 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:02:03,197 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-18 20:02:03,230 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:02:03,230 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:02:03,280 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:02:03,281 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1144501802] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:02:03,281 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:02:03,281 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2022-11-18 20:02:03,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523414558] [2022-11-18 20:02:03,282 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:02:03,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:02:03,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:02:03,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:02:03,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:02:03,283 INFO L87 Difference]: Start difference. First operand 144 states and 153 transitions. Second operand has 5 states, 4 states have (on average 8.75) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:02:03,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:02:03,394 INFO L93 Difference]: Finished difference Result 152 states and 160 transitions. [2022-11-18 20:02:03,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:02:03,395 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 8.75) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 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 31 [2022-11-18 20:02:03,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:02:03,396 INFO L225 Difference]: With dead ends: 152 [2022-11-18 20:02:03,396 INFO L226 Difference]: Without dead ends: 129 [2022-11-18 20:02:03,396 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 59 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:02:03,396 INFO L413 NwaCegarLoop]: 92 mSDtfsCounter, 0 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 273 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 44 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:02:03,397 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 273 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 102 Invalid, 0 Unknown, 44 Unchecked, 0.1s Time] [2022-11-18 20:02:03,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2022-11-18 20:02:03,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2022-11-18 20:02:03,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 107 states have (on average 1.280373831775701) internal successors, (137), 128 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:02:03,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 137 transitions. [2022-11-18 20:02:03,400 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 137 transitions. Word has length 31 [2022-11-18 20:02:03,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:02:03,400 INFO L495 AbstractCegarLoop]: Abstraction has 129 states and 137 transitions. [2022-11-18 20:02:03,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 8.75) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:02:03,401 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 137 transitions. [2022-11-18 20:02:03,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-11-18 20:02:03,401 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:02:03,401 INFO L195 NwaCegarLoop]: trace histogram [2, 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, 1, 1] [2022-11-18 20:02:03,411 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a779140c-df19-4a8b-87ae-1fff73edbef4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-18 20:02:03,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a779140c-df19-4a8b-87ae-1fff73edbef4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-11-18 20:02:03,602 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 68 more)] === [2022-11-18 20:02:03,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:02:03,602 INFO L85 PathProgramCache]: Analyzing trace with hash 929038273, now seen corresponding path program 1 times [2022-11-18 20:02:03,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:02:03,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513381838] [2022-11-18 20:02:03,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:02:03,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:02:03,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:02:04,213 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:02:04,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:02:04,214 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513381838] [2022-11-18 20:02:04,214 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513381838] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:02:04,214 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1254534241] [2022-11-18 20:02:04,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:02:04,214 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:02:04,214 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a779140c-df19-4a8b-87ae-1fff73edbef4/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:02:04,216 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a779140c-df19-4a8b-87ae-1fff73edbef4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:02:04,235 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a779140c-df19-4a8b-87ae-1fff73edbef4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-18 20:02:04,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:02:04,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 37 conjunts are in the unsatisfiable core [2022-11-18 20:02:04,383 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:02:04,388 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-18 20:02:04,407 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-18 20:02:04,467 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-18 20:02:04,468 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-18 20:02:04,494 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 20:02:04,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:02:04,505 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-18 20:02:04,581 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-18 20:02:04,581 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2022-11-18 20:02:04,591 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 22 [2022-11-18 20:02:04,618 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2022-11-18 20:02:04,638 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-18 20:02:04,666 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-18 20:02:04,727 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-18 20:02:04,730 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:02:04,730 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:02:04,830 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_915 (Array Int Int))) (= ~unnamed1~0~BLACK (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_#t~mem5#1.base| v_ArrVal_915) |c_ULTIMATE.start_main_~list~0#1.base|) (+ |c_ULTIMATE.start_main_~list~0#1.offset| 8)))) is different from false [2022-11-18 20:02:04,884 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_913 (Array Int Int)) (v_ArrVal_912 (Array Int Int)) (v_ArrVal_915 (Array Int Int))) (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_#t~mem4#1.base| v_ArrVal_913) (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem4#1.base| v_ArrVal_912) |c_ULTIMATE.start_main_~end~0#1.base|) |c_ULTIMATE.start_main_~end~0#1.offset|) v_ArrVal_915) |c_ULTIMATE.start_main_~list~0#1.base|) (+ |c_ULTIMATE.start_main_~list~0#1.offset| 8)) ~unnamed1~0~BLACK)) is different from false [2022-11-18 20:02:04,893 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_913 (Array Int Int)) (v_ArrVal_912 (Array Int Int)) (v_ArrVal_915 (Array Int Int))) (= ~unnamed1~0~BLACK (select (select (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~end~0#1.base|) |c_ULTIMATE.start_main_~end~0#1.offset|))) (store (store |c_#memory_int| .cse0 v_ArrVal_913) (select (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_912) |c_ULTIMATE.start_main_~end~0#1.base|) |c_ULTIMATE.start_main_~end~0#1.offset|) v_ArrVal_915)) |c_ULTIMATE.start_main_~list~0#1.base|) (+ |c_ULTIMATE.start_main_~list~0#1.offset| 8)))) is different from false [2022-11-18 20:02:04,908 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:02:04,909 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 39 [2022-11-18 20:02:04,913 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 62 [2022-11-18 20:02:04,920 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 27 [2022-11-18 20:02:08,289 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:02:08,295 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:02:08,296 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 31 [2022-11-18 20:02:08,300 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 24 [2022-11-18 20:02:08,303 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-18 20:02:08,338 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:02:08,338 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1254534241] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:02:08,339 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:02:08,339 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 15] total 26 [2022-11-18 20:02:08,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194930980] [2022-11-18 20:02:08,339 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:02:08,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-18 20:02:08,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:02:08,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-18 20:02:08,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=410, Unknown=12, NotChecked=132, Total=650 [2022-11-18 20:02:08,340 INFO L87 Difference]: Start difference. First operand 129 states and 137 transitions. Second operand has 26 states, 26 states have (on average 2.6538461538461537) internal successors, (69), 26 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:02:12,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:02:12,033 INFO L93 Difference]: Finished difference Result 221 states and 236 transitions. [2022-11-18 20:02:12,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-18 20:02:12,034 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.6538461538461537) internal successors, (69), 26 states have internal predecessors, (69), 0 states have call successors, (0), 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 35 [2022-11-18 20:02:12,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:02:12,036 INFO L225 Difference]: With dead ends: 221 [2022-11-18 20:02:12,036 INFO L226 Difference]: Without dead ends: 221 [2022-11-18 20:02:12,037 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 58 SyntacticMatches, 5 SemanticMatches, 35 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 252 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=273, Invalid=848, Unknown=13, NotChecked=198, Total=1332 [2022-11-18 20:02:12,038 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 324 mSDsluCounter, 495 mSDsCounter, 0 mSdLazyCounter, 686 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 324 SdHoareTripleChecker+Valid, 552 SdHoareTripleChecker+Invalid, 1584 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 686 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 861 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:02:12,038 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [324 Valid, 552 Invalid, 1584 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 686 Invalid, 0 Unknown, 861 Unchecked, 1.0s Time] [2022-11-18 20:02:12,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2022-11-18 20:02:12,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 155. [2022-11-18 20:02:12,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 133 states have (on average 1.2406015037593985) internal successors, (165), 154 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:02:12,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 165 transitions. [2022-11-18 20:02:12,043 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 165 transitions. Word has length 35 [2022-11-18 20:02:12,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:02:12,043 INFO L495 AbstractCegarLoop]: Abstraction has 155 states and 165 transitions. [2022-11-18 20:02:12,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.6538461538461537) internal successors, (69), 26 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:02:12,044 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 165 transitions. [2022-11-18 20:02:12,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-11-18 20:02:12,044 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:02:12,045 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 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, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:02:12,055 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a779140c-df19-4a8b-87ae-1fff73edbef4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-18 20:02:12,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a779140c-df19-4a8b-87ae-1fff73edbef4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:02:12,251 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr43REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 68 more)] === [2022-11-18 20:02:12,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:02:12,251 INFO L85 PathProgramCache]: Analyzing trace with hash 899162440, now seen corresponding path program 1 times [2022-11-18 20:02:12,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:02:12,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952203022] [2022-11-18 20:02:12,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:02:12,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:02:12,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:02:12,892 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:02:12,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:02:12,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952203022] [2022-11-18 20:02:12,892 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [952203022] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:02:12,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [28228565] [2022-11-18 20:02:12,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:02:12,893 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:02:12,893 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a779140c-df19-4a8b-87ae-1fff73edbef4/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:02:12,894 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a779140c-df19-4a8b-87ae-1fff73edbef4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:02:12,920 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a779140c-df19-4a8b-87ae-1fff73edbef4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-18 20:02:13,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:02:13,046 INFO L263 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 36 conjunts are in the unsatisfiable core [2022-11-18 20:02:13,048 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:02:13,056 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-18 20:02:13,210 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-18 20:02:13,210 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-18 20:02:13,291 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 20:02:13,501 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-18 20:02:13,501 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 29 [2022-11-18 20:02:13,707 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-18 20:02:13,707 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 29 [2022-11-18 20:02:13,786 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-18 20:02:13,786 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 29 [2022-11-18 20:02:14,217 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:02:14,218 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2022-11-18 20:02:14,387 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:02:14,388 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:02:17,443 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:02:17,444 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 31 [2022-11-18 20:02:17,463 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:02:17,464 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 252 treesize of output 227 [2022-11-18 20:02:17,483 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 212 treesize of output 204 [2022-11-18 20:02:17,505 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:02:17,506 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 204 treesize of output 196 [2022-11-18 20:02:23,766 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:02:23,767 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [28228565] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:02:23,767 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:02:23,767 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 13] total 33 [2022-11-18 20:02:23,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908213455] [2022-11-18 20:02:23,767 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:02:23,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-11-18 20:02:23,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:02:23,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-11-18 20:02:23,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=940, Unknown=20, NotChecked=0, Total=1122 [2022-11-18 20:02:23,769 INFO L87 Difference]: Start difference. First operand 155 states and 165 transitions. Second operand has 34 states, 33 states have (on average 3.6666666666666665) internal successors, (121), 34 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:02:25,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:02:25,335 INFO L93 Difference]: Finished difference Result 304 states and 326 transitions. [2022-11-18 20:02:25,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-18 20:02:25,335 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 3.6666666666666665) internal successors, (121), 34 states have internal predecessors, (121), 0 states have call successors, (0), 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 42 [2022-11-18 20:02:25,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:02:25,336 INFO L225 Difference]: With dead ends: 304 [2022-11-18 20:02:25,337 INFO L226 Difference]: Without dead ends: 304 [2022-11-18 20:02:25,337 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 65 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 477 ImplicationChecksByTransitivity, 8.7s TimeCoverageRelationStatistics Valid=298, Invalid=1404, Unknown=20, NotChecked=0, Total=1722 [2022-11-18 20:02:25,338 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 683 mSDsluCounter, 802 mSDsCounter, 0 mSdLazyCounter, 730 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 683 SdHoareTripleChecker+Valid, 855 SdHoareTripleChecker+Invalid, 2357 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 730 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1566 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:02:25,338 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [683 Valid, 855 Invalid, 2357 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 730 Invalid, 0 Unknown, 1566 Unchecked, 1.1s Time] [2022-11-18 20:02:25,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2022-11-18 20:02:25,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 163. [2022-11-18 20:02:25,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 141 states have (on average 1.2411347517730495) internal successors, (175), 162 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:02:25,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 175 transitions. [2022-11-18 20:02:25,343 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 175 transitions. Word has length 42 [2022-11-18 20:02:25,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:02:25,343 INFO L495 AbstractCegarLoop]: Abstraction has 163 states and 175 transitions. [2022-11-18 20:02:25,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 3.6666666666666665) internal successors, (121), 34 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:02:25,344 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 175 transitions. [2022-11-18 20:02:25,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-11-18 20:02:25,345 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:02:25,345 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 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, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:02:25,355 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a779140c-df19-4a8b-87ae-1fff73edbef4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-18 20:02:25,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a779140c-df19-4a8b-87ae-1fff73edbef4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:02:25,551 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr44REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 68 more)] === [2022-11-18 20:02:25,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:02:25,551 INFO L85 PathProgramCache]: Analyzing trace with hash 899162441, now seen corresponding path program 1 times [2022-11-18 20:02:25,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:02:25,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255604427] [2022-11-18 20:02:25,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:02:25,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:02:25,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:02:26,429 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:02:26,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:02:26,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255604427] [2022-11-18 20:02:26,429 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255604427] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:02:26,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1946963095] [2022-11-18 20:02:26,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:02:26,430 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:02:26,430 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a779140c-df19-4a8b-87ae-1fff73edbef4/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:02:26,439 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a779140c-df19-4a8b-87ae-1fff73edbef4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:02:26,463 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a779140c-df19-4a8b-87ae-1fff73edbef4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-18 20:02:26,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:02:26,607 INFO L263 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 48 conjunts are in the unsatisfiable core [2022-11-18 20:02:26,610 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:02:26,616 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-18 20:02:26,758 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-18 20:02:26,783 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-18 20:02:26,783 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-18 20:02:26,845 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 20:02:26,858 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 20:02:27,047 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-18 20:02:27,047 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 37 [2022-11-18 20:02:27,053 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-11-18 20:02:27,258 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-18 20:02:27,258 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-18 20:02:27,270 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-18 20:02:27,295 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-18 20:02:27,296 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 29 [2022-11-18 20:02:27,402 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-18 20:02:27,403 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 37 [2022-11-18 20:02:27,409 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-11-18 20:02:27,784 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:02:27,785 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-18 20:02:27,797 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:02:27,800 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:02:27,801 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 16 [2022-11-18 20:02:27,919 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:02:27,919 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:02:29,473 WARN L837 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_1118 (Array Int Int)) (|v_ULTIMATE.start_main_~end~0#1.offset_86| Int) (v_ArrVal_1114 (Array Int Int)) (v_ArrVal_1113 (Array Int Int))) (or (<= 0 (+ (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem4#1.base| v_ArrVal_1114) (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem4#1.base| v_ArrVal_1113) |c_ULTIMATE.start_main_~end~0#1.base|) |c_ULTIMATE.start_main_~end~0#1.offset|) v_ArrVal_1118) |c_ULTIMATE.start_main_~list~0#1.base|) |v_ULTIMATE.start_main_~end~0#1.offset_86|) 8)) (not (<= 0 |v_ULTIMATE.start_main_~end~0#1.offset_86|)) (not (<= |v_ULTIMATE.start_main_~end~0#1.offset_86| |c_ULTIMATE.start_main_~list~0#1.offset|)))) (forall ((v_ArrVal_1118 (Array Int Int)) (v_ArrVal_1117 (Array Int Int)) (|v_ULTIMATE.start_main_~end~0#1.offset_86| Int) (v_ArrVal_1114 (Array Int Int)) (v_ArrVal_1113 (Array Int Int))) (or (let ((.cse1 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem4#1.base| v_ArrVal_1113))) (let ((.cse0 (select (select .cse1 |c_ULTIMATE.start_main_~end~0#1.base|) |c_ULTIMATE.start_main_~end~0#1.offset|))) (<= (+ (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem4#1.base| v_ArrVal_1114) .cse0 v_ArrVal_1118) |c_ULTIMATE.start_main_~list~0#1.base|) |v_ULTIMATE.start_main_~end~0#1.offset_86|) 12) (select |c_#length| (select (select (store .cse1 .cse0 v_ArrVal_1117) |c_ULTIMATE.start_main_~list~0#1.base|) |v_ULTIMATE.start_main_~end~0#1.offset_86|))))) (not (<= 0 |v_ULTIMATE.start_main_~end~0#1.offset_86|)) (not (<= |v_ULTIMATE.start_main_~end~0#1.offset_86| |c_ULTIMATE.start_main_~list~0#1.offset|))))) is different from false [2022-11-18 20:02:29,517 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~end~0#1.base|) |c_ULTIMATE.start_main_~end~0#1.offset|))) (and (forall ((v_ArrVal_1118 (Array Int Int)) (v_ArrVal_1117 (Array Int Int)) (|v_ULTIMATE.start_main_~end~0#1.offset_86| Int) (v_ArrVal_1114 (Array Int Int)) (v_ArrVal_1113 (Array Int Int))) (or (not (<= 0 |v_ULTIMATE.start_main_~end~0#1.offset_86|)) (not (<= |v_ULTIMATE.start_main_~end~0#1.offset_86| |c_ULTIMATE.start_main_~list~0#1.offset|)) (let ((.cse2 (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_1113))) (let ((.cse1 (select (select .cse2 |c_ULTIMATE.start_main_~end~0#1.base|) |c_ULTIMATE.start_main_~end~0#1.offset|))) (<= (+ (select (select (store (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_1114) .cse1 v_ArrVal_1118) |c_ULTIMATE.start_main_~list~0#1.base|) |v_ULTIMATE.start_main_~end~0#1.offset_86|) 12) (select |c_#length| (select (select (store .cse2 .cse1 v_ArrVal_1117) |c_ULTIMATE.start_main_~list~0#1.base|) |v_ULTIMATE.start_main_~end~0#1.offset_86|))))))) (forall ((v_ArrVal_1118 (Array Int Int)) (|v_ULTIMATE.start_main_~end~0#1.offset_86| Int) (v_ArrVal_1114 (Array Int Int)) (v_ArrVal_1113 (Array Int Int))) (or (not (<= 0 |v_ULTIMATE.start_main_~end~0#1.offset_86|)) (not (<= |v_ULTIMATE.start_main_~end~0#1.offset_86| |c_ULTIMATE.start_main_~list~0#1.offset|)) (<= 0 (+ (select (select (store (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_1114) (select (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_1113) |c_ULTIMATE.start_main_~end~0#1.base|) |c_ULTIMATE.start_main_~end~0#1.offset|) v_ArrVal_1118) |c_ULTIMATE.start_main_~list~0#1.base|) |v_ULTIMATE.start_main_~end~0#1.offset_86|) 8)))))) is different from false [2022-11-18 20:02:29,573 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:02:29,574 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 39 [2022-11-18 20:02:29,584 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:02:29,585 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 31 [2022-11-18 20:02:29,592 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 46 [2022-11-18 20:02:29,611 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:02:29,612 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 186 treesize of output 181 [2022-11-18 20:02:29,642 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 166 treesize of output 156 [2022-11-18 20:02:29,651 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 130 treesize of output 126 [2022-11-18 20:02:29,660 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 126 treesize of output 114 [2022-11-18 20:02:29,847 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:02:29,847 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 74 [2022-11-18 20:02:29,860 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:02:29,860 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 50 [2022-11-18 20:02:29,865 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:02:29,866 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:02:29,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:02:29,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:02:29,872 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 74 treesize of output 50 [2022-11-18 20:02:29,877 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:02:29,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:02:29,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:02:29,884 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 30 [2022-11-18 20:02:29,891 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 11 [2022-11-18 20:02:30,464 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:02:30,465 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1946963095] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:02:30,465 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:02:30,465 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 13] total 35 [2022-11-18 20:02:30,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390700252] [2022-11-18 20:02:30,465 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:02:30,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-11-18 20:02:30,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:02:30,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-11-18 20:02:30,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=1008, Unknown=8, NotChecked=130, Total=1260 [2022-11-18 20:02:30,467 INFO L87 Difference]: Start difference. First operand 163 states and 175 transitions. Second operand has 36 states, 35 states have (on average 3.5428571428571427) internal successors, (124), 36 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:02:34,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:02:34,456 INFO L93 Difference]: Finished difference Result 231 states and 247 transitions. [2022-11-18 20:02:34,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-11-18 20:02:34,457 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 35 states have (on average 3.5428571428571427) internal successors, (124), 36 states have internal predecessors, (124), 0 states have call successors, (0), 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 42 [2022-11-18 20:02:34,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:02:34,459 INFO L225 Difference]: With dead ends: 231 [2022-11-18 20:02:34,459 INFO L226 Difference]: Without dead ends: 231 [2022-11-18 20:02:34,460 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 62 SyntacticMatches, 6 SemanticMatches, 57 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 607 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=485, Invalid=2707, Unknown=8, NotChecked=222, Total=3422 [2022-11-18 20:02:34,461 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 845 mSDsluCounter, 780 mSDsCounter, 0 mSdLazyCounter, 1255 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 845 SdHoareTripleChecker+Valid, 837 SdHoareTripleChecker+Invalid, 2285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 1255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 965 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-18 20:02:34,461 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [845 Valid, 837 Invalid, 2285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 1255 Invalid, 0 Unknown, 965 Unchecked, 1.7s Time] [2022-11-18 20:02:34,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2022-11-18 20:02:34,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 166. [2022-11-18 20:02:34,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 144 states have (on average 1.2361111111111112) internal successors, (178), 165 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:02:34,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 178 transitions. [2022-11-18 20:02:34,466 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 178 transitions. Word has length 42 [2022-11-18 20:02:34,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:02:34,466 INFO L495 AbstractCegarLoop]: Abstraction has 166 states and 178 transitions. [2022-11-18 20:02:34,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 35 states have (on average 3.5428571428571427) internal successors, (124), 36 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:02:34,467 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 178 transitions. [2022-11-18 20:02:34,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-18 20:02:34,467 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:02:34,468 INFO L195 NwaCegarLoop]: trace histogram [2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:02:34,474 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a779140c-df19-4a8b-87ae-1fff73edbef4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-18 20:02:34,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a779140c-df19-4a8b-87ae-1fff73edbef4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-11-18 20:02:34,674 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 68 more)] === [2022-11-18 20:02:34,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:02:34,674 INFO L85 PathProgramCache]: Analyzing trace with hash 1421280140, now seen corresponding path program 1 times [2022-11-18 20:02:34,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:02:34,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495559172] [2022-11-18 20:02:34,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:02:34,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:02:34,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:02:36,338 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:02:36,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:02:36,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495559172] [2022-11-18 20:02:36,338 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495559172] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:02:36,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [350689322] [2022-11-18 20:02:36,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:02:36,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:02:36,339 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a779140c-df19-4a8b-87ae-1fff73edbef4/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:02:36,343 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a779140c-df19-4a8b-87ae-1fff73edbef4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:02:36,347 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a779140c-df19-4a8b-87ae-1fff73edbef4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-18 20:02:36,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:02:36,519 INFO L263 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 58 conjunts are in the unsatisfiable core [2022-11-18 20:02:36,528 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:02:36,533 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-18 20:02:36,557 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-18 20:02:36,674 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-18 20:02:36,675 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-18 20:02:36,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:02:36,746 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-18 20:02:36,769 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 20:02:37,033 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-18 20:02:37,033 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2022-11-18 20:02:37,042 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 22 [2022-11-18 20:02:37,077 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2022-11-18 20:02:37,111 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-18 20:02:37,182 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-18 20:02:37,244 INFO L321 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2022-11-18 20:02:37,244 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2022-11-18 20:02:37,261 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-18 20:02:37,277 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 20:02:37,464 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-18 20:02:37,464 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 36 [2022-11-18 20:02:37,473 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 22 [2022-11-18 20:02:37,534 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2022-11-18 20:02:37,553 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-18 20:02:37,570 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-18 20:02:37,705 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-18 20:02:37,708 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:02:37,709 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:02:37,921 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1280 (Array Int Int)) (v_ArrVal_1278 (Array Int Int)) (v_ArrVal_1277 (Array Int Int))) (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_#t~mem8#1.base| v_ArrVal_1278) (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem8#1.base| v_ArrVal_1277) |c_ULTIMATE.start_main_~end~0#1.base|) |c_ULTIMATE.start_main_~end~0#1.offset|) v_ArrVal_1280) |c_ULTIMATE.start_main_~list~0#1.base|) (+ |c_ULTIMATE.start_main_~list~0#1.offset| 8)) ~unnamed1~0~BLACK)) is different from false [2022-11-18 20:02:38,035 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:02:38,035 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 34 [2022-11-18 20:02:38,039 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 52 [2022-11-18 20:02:38,044 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 22 [2022-11-18 20:02:38,897 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:02:38,897 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 55 [2022-11-18 20:02:38,904 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 104 treesize of output 92 [2022-11-18 20:02:38,913 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 53 [2022-11-18 20:02:39,024 INFO L321 Elim1Store]: treesize reduction 14, result has 71.4 percent of original size [2022-11-18 20:02:39,024 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 35 treesize of output 61 [2022-11-18 20:02:39,281 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (= |c_ULTIMATE.start_main_#t~malloc3#1.base| |c_ULTIMATE.start_main_~end~0#1.base|)) (.cse1 (select |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base|)) (.cse2 (+ |c_ULTIMATE.start_main_~list~0#1.offset| 8))) (and (or .cse0 (and (forall ((|v_ULTIMATE.start_main_#t~malloc7#1.base_11| Int)) (or (= |v_ULTIMATE.start_main_#t~malloc7#1.base_11| |c_ULTIMATE.start_main_#t~malloc3#1.base|) (= |v_ULTIMATE.start_main_#t~malloc7#1.base_11| |c_ULTIMATE.start_main_~end~0#1.base|) (forall ((v_ArrVal_1280 (Array Int Int)) (v_ArrVal_1269 Int) (v_ArrVal_1274 (Array Int Int))) (= ~unnamed1~0~BLACK (select (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| (store .cse1 |c_ULTIMATE.start_main_~end~0#1.offset| v_ArrVal_1269)) |c_ULTIMATE.start_main_#t~malloc3#1.base| v_ArrVal_1274) |v_ULTIMATE.start_main_#t~malloc7#1.base_11| v_ArrVal_1280) |c_ULTIMATE.start_main_~list~0#1.base|) .cse2))))) (forall ((|v_ULTIMATE.start_main_#t~malloc7#1.base_11| Int)) (or (= |v_ULTIMATE.start_main_#t~malloc7#1.base_11| |c_ULTIMATE.start_main_#t~malloc3#1.base|) (= |v_ULTIMATE.start_main_#t~malloc7#1.base_11| |c_ULTIMATE.start_main_~end~0#1.base|) (forall ((v_ArrVal_1280 (Array Int Int)) (v_arrayElimCell_84 Int) (v_ArrVal_1269 Int) (v_ArrVal_1274 (Array Int Int))) (let ((.cse3 (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| (store .cse1 |c_ULTIMATE.start_main_~end~0#1.offset| v_ArrVal_1269)))) (or (forall ((v_ArrVal_1270 (Array Int Int))) (= ~unnamed1~0~BLACK (select (select (store (store (store .cse3 |c_ULTIMATE.start_main_#t~malloc3#1.base| v_ArrVal_1270) v_arrayElimCell_84 v_ArrVal_1274) |v_ULTIMATE.start_main_#t~malloc7#1.base_11| v_ArrVal_1280) |c_ULTIMATE.start_main_~list~0#1.base|) .cse2))) (= ~unnamed1~0~BLACK (select (select (store (store .cse3 |c_ULTIMATE.start_main_#t~malloc3#1.base| v_ArrVal_1274) |v_ULTIMATE.start_main_#t~malloc7#1.base_11| v_ArrVal_1280) |c_ULTIMATE.start_main_~list~0#1.base|) .cse2))))))))) (forall ((|v_ULTIMATE.start_main_#t~malloc7#1.base_11| Int)) (or (= |v_ULTIMATE.start_main_#t~malloc7#1.base_11| |c_ULTIMATE.start_main_#t~malloc3#1.base|) (= |v_ULTIMATE.start_main_#t~malloc7#1.base_11| |c_ULTIMATE.start_main_~end~0#1.base|) (forall ((v_arrayElimCell_84 Int)) (or (= |v_ULTIMATE.start_main_#t~malloc7#1.base_11| v_arrayElimCell_84) (forall ((v_ArrVal_1280 (Array Int Int)) (v_ArrVal_1269 Int) (v_ArrVal_1274 (Array Int Int))) (let ((.cse4 (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| (store .cse1 |c_ULTIMATE.start_main_~end~0#1.offset| v_ArrVal_1269)))) (or (forall ((v_ArrVal_1270 (Array Int Int))) (= ~unnamed1~0~BLACK (select (select (store (store (store .cse4 |c_ULTIMATE.start_main_#t~malloc3#1.base| v_ArrVal_1270) v_arrayElimCell_84 v_ArrVal_1274) |v_ULTIMATE.start_main_#t~malloc7#1.base_11| v_ArrVal_1280) |c_ULTIMATE.start_main_~list~0#1.base|) .cse2))) (= ~unnamed1~0~BLACK (select (select (store (store .cse4 |c_ULTIMATE.start_main_#t~malloc3#1.base| v_ArrVal_1274) |v_ULTIMATE.start_main_#t~malloc7#1.base_11| v_ArrVal_1280) |c_ULTIMATE.start_main_~list~0#1.base|) .cse2))))))))) (or (not .cse0) (forall ((v_ArrVal_1280 (Array Int Int)) (v_arrayElimCell_84 Int) (|v_ULTIMATE.start_main_#t~malloc7#1.base_11| Int) (v_ArrVal_1269 Int) (v_ArrVal_1274 (Array Int Int)) (v_ArrVal_1270 (Array Int Int))) (or (= |v_ULTIMATE.start_main_#t~malloc7#1.base_11| v_arrayElimCell_84) (= |v_ULTIMATE.start_main_#t~malloc7#1.base_11| |c_ULTIMATE.start_main_~end~0#1.base|) (= ~unnamed1~0~BLACK (select (select (store (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| (store .cse1 |c_ULTIMATE.start_main_~end~0#1.offset| v_ArrVal_1269)) |c_ULTIMATE.start_main_#t~malloc3#1.base| v_ArrVal_1270) v_arrayElimCell_84 v_ArrVal_1274) |v_ULTIMATE.start_main_#t~malloc7#1.base_11| v_ArrVal_1280) |c_ULTIMATE.start_main_~list~0#1.base|) .cse2))))) (or .cse0 (forall ((v_ArrVal_1280 (Array Int Int)) (|v_ULTIMATE.start_main_#t~malloc7#1.base_11| Int) (v_ArrVal_1269 Int) (v_ArrVal_1274 (Array Int Int))) (or (= |v_ULTIMATE.start_main_#t~malloc7#1.base_11| |c_ULTIMATE.start_main_#t~malloc3#1.base|) (= |v_ULTIMATE.start_main_#t~malloc7#1.base_11| |c_ULTIMATE.start_main_~end~0#1.base|) (= ~unnamed1~0~BLACK (select (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| (store .cse1 |c_ULTIMATE.start_main_~end~0#1.offset| v_ArrVal_1269)) |c_ULTIMATE.start_main_#t~malloc3#1.base| v_ArrVal_1274) |v_ULTIMATE.start_main_#t~malloc7#1.base_11| v_ArrVal_1280) |c_ULTIMATE.start_main_~list~0#1.base|) .cse2))))))) is different from false [2022-11-18 20:03:00,743 WARN L233 SmtUtils]: Spent 6.04s on a formula simplification that was a NOOP. DAG size: 71 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 20:03:00,842 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:03:00,845 INFO L321 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2022-11-18 20:03:00,845 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 1 [2022-11-18 20:03:00,854 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:03:00,857 INFO L321 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2022-11-18 20:03:00,858 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 1 [2022-11-18 20:03:00,865 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:03:00,868 INFO L321 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2022-11-18 20:03:00,868 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 60 treesize of output 1 [2022-11-18 20:03:00,875 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:03:00,885 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:03:00,886 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 60 treesize of output 52 [2022-11-18 20:03:00,894 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:03:00,899 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 95 treesize of output 77 [2022-11-18 20:03:00,908 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-18 20:03:00,912 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-18 20:03:01,006 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:03:01,006 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [350689322] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:03:01,006 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:03:01,006 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 19, 21] total 45 [2022-11-18 20:03:01,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606650963] [2022-11-18 20:03:01,007 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:03:01,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-11-18 20:03:01,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:03:01,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-11-18 20:03:01,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=1505, Unknown=31, NotChecked=166, Total=1980 [2022-11-18 20:03:01,008 INFO L87 Difference]: Start difference. First operand 166 states and 178 transitions. Second operand has 45 states, 45 states have (on average 2.3333333333333335) internal successors, (105), 45 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:03:04,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:03:04,651 INFO L93 Difference]: Finished difference Result 202 states and 215 transitions. [2022-11-18 20:03:04,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-18 20:03:04,652 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 2.3333333333333335) internal successors, (105), 45 states have internal predecessors, (105), 0 states have call successors, (0), 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 45 [2022-11-18 20:03:04,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:03:04,653 INFO L225 Difference]: With dead ends: 202 [2022-11-18 20:03:04,653 INFO L226 Difference]: Without dead ends: 202 [2022-11-18 20:03:04,654 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 70 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 947 ImplicationChecksByTransitivity, 25.5s TimeCoverageRelationStatistics Valid=454, Invalid=2279, Unknown=31, NotChecked=206, Total=2970 [2022-11-18 20:03:04,655 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 108 mSDsluCounter, 898 mSDsCounter, 0 mSdLazyCounter, 634 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 988 SdHoareTripleChecker+Invalid, 1360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 634 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 707 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-18 20:03:04,655 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 988 Invalid, 1360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 634 Invalid, 0 Unknown, 707 Unchecked, 0.9s Time] [2022-11-18 20:03:04,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2022-11-18 20:03:04,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 192. [2022-11-18 20:03:04,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 170 states have (on average 1.2058823529411764) internal successors, (205), 191 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:03:04,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 205 transitions. [2022-11-18 20:03:04,659 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 205 transitions. Word has length 45 [2022-11-18 20:03:04,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:03:04,659 INFO L495 AbstractCegarLoop]: Abstraction has 192 states and 205 transitions. [2022-11-18 20:03:04,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 2.3333333333333335) internal successors, (105), 45 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:03:04,660 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 205 transitions. [2022-11-18 20:03:04,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-11-18 20:03:04,660 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:03:04,660 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 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, 1, 1, 1] [2022-11-18 20:03:04,676 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a779140c-df19-4a8b-87ae-1fff73edbef4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-18 20:03:04,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a779140c-df19-4a8b-87ae-1fff73edbef4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-11-18 20:03:04,866 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr43REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 68 more)] === [2022-11-18 20:03:04,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:03:04,867 INFO L85 PathProgramCache]: Analyzing trace with hash 1605357382, now seen corresponding path program 2 times [2022-11-18 20:03:04,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:03:04,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741406199] [2022-11-18 20:03:04,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:03:04,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:03:04,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:05,834 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:03:05,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:03:05,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741406199] [2022-11-18 20:03:05,835 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741406199] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:03:05,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1394524631] [2022-11-18 20:03:05,835 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:03:05,835 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:03:05,835 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a779140c-df19-4a8b-87ae-1fff73edbef4/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:03:05,836 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a779140c-df19-4a8b-87ae-1fff73edbef4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:03:05,867 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a779140c-df19-4a8b-87ae-1fff73edbef4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-18 20:03:06,017 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 20:03:06,018 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:03:06,020 INFO L263 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 53 conjunts are in the unsatisfiable core [2022-11-18 20:03:06,022 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:03:06,368 INFO L321 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2022-11-18 20:03:06,369 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 26 [2022-11-18 20:03:06,424 INFO L321 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2022-11-18 20:03:06,425 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 26 [2022-11-18 20:03:06,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:03:06,610 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 28 [2022-11-18 20:03:06,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:03:06,633 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 28 [2022-11-18 20:03:08,179 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:03:08,181 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:03:08,222 INFO L321 Elim1Store]: treesize reduction 24, result has 41.5 percent of original size [2022-11-18 20:03:08,222 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 78 treesize of output 64 [2022-11-18 20:03:08,229 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:03:08,258 INFO L321 Elim1Store]: treesize reduction 53, result has 11.7 percent of original size [2022-11-18 20:03:08,259 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 56 treesize of output 40 [2022-11-18 20:03:08,278 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:03:08,278 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:03:26,416 INFO L321 Elim1Store]: treesize reduction 44, result has 92.2 percent of original size [2022-11-18 20:03:26,416 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 11 select indices, 11 select index equivalence classes, 0 disjoint index pairs (out of 55 index pairs), introduced 15 new quantified variables, introduced 55 case distinctions, treesize of input 11737 treesize of output 8602 [2022-11-18 20:03:42,015 WARN L233 SmtUtils]: Spent 14.96s on a formula simplification. DAG size of input: 798 DAG size of output: 570 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-18 20:03:42,019 INFO L321 Elim1Store]: treesize reduction 836, result has 65.1 percent of original size [2022-11-18 20:03:42,020 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 22 select indices, 22 select index equivalence classes, 0 disjoint index pairs (out of 231 index pairs), introduced 24 new quantified variables, introduced 231 case distinctions, treesize of input 60909 treesize of output 42340