./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_linked_list_remove_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7dca2e9-3903-46b6-90b3-995dd8654bd7/bin/uautomizer-w2VwFs6gM0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7dca2e9-3903-46b6-90b3-995dd8654bd7/bin/uautomizer-w2VwFs6gM0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7dca2e9-3903-46b6-90b3-995dd8654bd7/bin/uautomizer-w2VwFs6gM0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7dca2e9-3903-46b6-90b3-995dd8654bd7/bin/uautomizer-w2VwFs6gM0/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_linked_list_remove_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7dca2e9-3903-46b6-90b3-995dd8654bd7/bin/uautomizer-w2VwFs6gM0/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7dca2e9-3903-46b6-90b3-995dd8654bd7/bin/uautomizer-w2VwFs6gM0 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 588c504bc2fd23c9ce280a0a1b43a680048f163183a3674ad6d00cde5eb05799 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-22 15:10:30,769 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-22 15:10:30,772 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-22 15:10:30,816 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-22 15:10:30,817 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-22 15:10:30,819 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-22 15:10:30,821 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-22 15:10:30,825 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-22 15:10:30,827 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-22 15:10:30,829 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-22 15:10:30,830 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-22 15:10:30,832 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-22 15:10:30,833 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-22 15:10:30,835 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-22 15:10:30,837 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-22 15:10:30,839 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-22 15:10:30,841 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-22 15:10:30,843 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-22 15:10:30,846 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-22 15:10:30,849 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-22 15:10:30,852 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-22 15:10:30,855 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-22 15:10:30,857 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-22 15:10:30,859 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-22 15:10:30,863 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-22 15:10:30,864 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-22 15:10:30,865 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-22 15:10:30,867 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-22 15:10:30,868 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-22 15:10:30,869 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-22 15:10:30,883 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-22 15:10:30,885 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-22 15:10:30,886 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-22 15:10:30,888 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-22 15:10:30,889 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-22 15:10:30,890 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-22 15:10:30,891 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-22 15:10:30,892 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-22 15:10:30,892 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-22 15:10:30,894 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-22 15:10:30,895 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-22 15:10:30,896 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7dca2e9-3903-46b6-90b3-995dd8654bd7/bin/uautomizer-w2VwFs6gM0/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-22 15:10:30,945 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-22 15:10:30,946 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-22 15:10:30,947 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-22 15:10:30,947 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-22 15:10:30,949 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-22 15:10:30,949 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-22 15:10:30,950 INFO L138 SettingsManager]: * Use SBE=true [2021-11-22 15:10:30,950 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-22 15:10:30,950 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-22 15:10:30,951 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-22 15:10:30,951 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-22 15:10:30,951 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-22 15:10:30,951 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-22 15:10:30,952 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-22 15:10:30,952 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-22 15:10:30,952 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-22 15:10:30,953 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-22 15:10:30,953 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-22 15:10:30,953 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-22 15:10:30,953 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 15:10:30,954 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-22 15:10:30,954 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-22 15:10:30,954 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-22 15:10:30,955 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-22 15:10:30,955 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-22 15:10:30,955 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-22 15:10:30,955 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-22 15:10:30,956 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-22 15:10:30,956 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-22 15:10:30,956 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_f7dca2e9-3903-46b6-90b3-995dd8654bd7/bin/uautomizer-w2VwFs6gM0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7dca2e9-3903-46b6-90b3-995dd8654bd7/bin/uautomizer-w2VwFs6gM0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 588c504bc2fd23c9ce280a0a1b43a680048f163183a3674ad6d00cde5eb05799 [2021-11-22 15:10:31,349 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-22 15:10:31,387 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-22 15:10:31,390 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-22 15:10:31,393 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-22 15:10:31,396 INFO L275 PluginConnector]: CDTParser initialized [2021-11-22 15:10:31,397 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7dca2e9-3903-46b6-90b3-995dd8654bd7/bin/uautomizer-w2VwFs6gM0/../../sv-benchmarks/c/aws-c-common/aws_linked_list_remove_harness.i [2021-11-22 15:10:31,503 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7dca2e9-3903-46b6-90b3-995dd8654bd7/bin/uautomizer-w2VwFs6gM0/data/81f4f55dc/2f8703fb77114447896985a89274171d/FLAG81af51103 [2021-11-22 15:10:32,442 INFO L306 CDTParser]: Found 1 translation units. [2021-11-22 15:10:32,444 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7dca2e9-3903-46b6-90b3-995dd8654bd7/sv-benchmarks/c/aws-c-common/aws_linked_list_remove_harness.i [2021-11-22 15:10:32,501 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7dca2e9-3903-46b6-90b3-995dd8654bd7/bin/uautomizer-w2VwFs6gM0/data/81f4f55dc/2f8703fb77114447896985a89274171d/FLAG81af51103 [2021-11-22 15:10:32,914 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7dca2e9-3903-46b6-90b3-995dd8654bd7/bin/uautomizer-w2VwFs6gM0/data/81f4f55dc/2f8703fb77114447896985a89274171d [2021-11-22 15:10:32,918 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-22 15:10:32,921 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-22 15:10:32,928 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-22 15:10:32,928 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-22 15:10:32,932 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-22 15:10:32,934 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 03:10:32" (1/1) ... [2021-11-22 15:10:32,937 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20f2fbe1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:10:32, skipping insertion in model container [2021-11-22 15:10:32,938 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 03:10:32" (1/1) ... [2021-11-22 15:10:32,947 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-22 15:10:33,074 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-22 15:10:33,459 WARN L230 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_f7dca2e9-3903-46b6-90b3-995dd8654bd7/sv-benchmarks/c/aws-c-common/aws_linked_list_remove_harness.i[4496,4509] [2021-11-22 15:10:33,469 WARN L230 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_f7dca2e9-3903-46b6-90b3-995dd8654bd7/sv-benchmarks/c/aws-c-common/aws_linked_list_remove_harness.i[4556,4569] [2021-11-22 15:10:34,651 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 15:10:34,652 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 15:10:34,654 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 15:10:34,655 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 15:10:34,657 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 15:10:34,692 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 15:10:34,699 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 15:10:34,708 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 15:10:34,709 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 15:10:34,714 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 15:10:34,718 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 15:10:34,719 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 15:10:34,720 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 15:10:35,165 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-22 15:10:35,167 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-22 15:10:35,169 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-22 15:10:35,170 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-22 15:10:35,172 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-22 15:10:35,173 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-22 15:10:35,175 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-22 15:10:35,176 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-22 15:10:35,176 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-22 15:10:35,177 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-22 15:10:35,343 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-22 15:10:35,373 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 15:10:35,434 INFO L203 MainTranslator]: Completed pre-run [2021-11-22 15:10:35,472 WARN L230 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_f7dca2e9-3903-46b6-90b3-995dd8654bd7/sv-benchmarks/c/aws-c-common/aws_linked_list_remove_harness.i[4496,4509] [2021-11-22 15:10:35,473 WARN L230 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_f7dca2e9-3903-46b6-90b3-995dd8654bd7/sv-benchmarks/c/aws-c-common/aws_linked_list_remove_harness.i[4556,4569] [2021-11-22 15:10:35,578 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 15:10:35,579 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 15:10:35,579 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 15:10:35,580 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 15:10:35,581 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 15:10:35,592 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 15:10:35,593 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 15:10:35,595 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 15:10:35,596 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 15:10:35,597 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 15:10:35,598 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 15:10:35,599 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 15:10:35,600 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 15:10:35,649 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-22 15:10:35,650 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-22 15:10:35,651 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-22 15:10:35,653 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-22 15:10:35,654 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-22 15:10:35,655 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-22 15:10:35,656 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-22 15:10:35,656 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-22 15:10:35,657 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-22 15:10:35,658 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-22 15:10:35,708 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-22 15:10:35,734 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 15:10:36,096 INFO L208 MainTranslator]: Completed translation [2021-11-22 15:10:36,097 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:10:36 WrapperNode [2021-11-22 15:10:36,097 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-22 15:10:36,099 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-22 15:10:36,099 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-22 15:10:36,100 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-22 15:10:36,109 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:10:36" (1/1) ... [2021-11-22 15:10:36,265 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:10:36" (1/1) ... [2021-11-22 15:10:36,362 INFO L137 Inliner]: procedures = 679, calls = 1048, calls flagged for inlining = 547, calls inlined = 21, statements flattened = 220 [2021-11-22 15:10:36,365 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-22 15:10:36,367 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-22 15:10:36,367 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-22 15:10:36,367 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-22 15:10:36,378 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:10:36" (1/1) ... [2021-11-22 15:10:36,379 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:10:36" (1/1) ... [2021-11-22 15:10:36,391 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:10:36" (1/1) ... [2021-11-22 15:10:36,392 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:10:36" (1/1) ... [2021-11-22 15:10:36,438 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:10:36" (1/1) ... [2021-11-22 15:10:36,444 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:10:36" (1/1) ... [2021-11-22 15:10:36,458 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:10:36" (1/1) ... [2021-11-22 15:10:36,474 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-22 15:10:36,484 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-22 15:10:36,484 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-22 15:10:36,485 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-22 15:10:36,486 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:10:36" (1/1) ... [2021-11-22 15:10:36,500 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 15:10:36,515 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7dca2e9-3903-46b6-90b3-995dd8654bd7/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:10:36,537 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7dca2e9-3903-46b6-90b3-995dd8654bd7/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-22 15:10:36,556 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7dca2e9-3903-46b6-90b3-995dd8654bd7/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-22 15:10:36,599 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-22 15:10:36,599 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-22 15:10:36,599 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-22 15:10:36,600 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-22 15:10:36,600 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-22 15:10:36,601 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-22 15:10:36,601 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-22 15:10:36,602 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-22 15:10:36,602 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-22 15:10:36,604 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-22 15:10:36,997 INFO L236 CfgBuilder]: Building ICFG [2021-11-22 15:10:37,000 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-22 15:10:37,500 INFO L277 CfgBuilder]: Performing block encoding [2021-11-22 15:10:37,514 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-22 15:10:37,515 INFO L301 CfgBuilder]: Removed 3 assume(true) statements. [2021-11-22 15:10:37,518 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 03:10:37 BoogieIcfgContainer [2021-11-22 15:10:37,519 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-22 15:10:37,521 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-22 15:10:37,522 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-22 15:10:37,526 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-22 15:10:37,527 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 03:10:32" (1/3) ... [2021-11-22 15:10:37,528 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ace7815 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 03:10:37, skipping insertion in model container [2021-11-22 15:10:37,528 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:10:36" (2/3) ... [2021-11-22 15:10:37,529 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ace7815 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 03:10:37, skipping insertion in model container [2021-11-22 15:10:37,530 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 03:10:37" (3/3) ... [2021-11-22 15:10:37,532 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_linked_list_remove_harness.i [2021-11-22 15:10:37,540 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-22 15:10:37,540 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2021-11-22 15:10:37,613 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-22 15:10:37,621 INFO L339 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=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-22 15:10:37,622 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-11-22 15:10:37,645 INFO L276 IsEmpty]: Start isEmpty. Operand has 74 states, 66 states have (on average 1.4848484848484849) internal successors, (98), 73 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:10:37,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-22 15:10:37,656 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:10:37,657 INFO L514 BasicCegarLoop]: 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] [2021-11-22 15:10:37,658 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-22 15:10:37,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:10:37,665 INFO L85 PathProgramCache]: Analyzing trace with hash 444327765, now seen corresponding path program 1 times [2021-11-22 15:10:37,677 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:10:37,678 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094820073] [2021-11-22 15:10:37,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:10:37,680 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:10:38,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:10:38,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:10:38,212 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:10:38,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094820073] [2021-11-22 15:10:38,213 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094820073] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:10:38,214 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:10:38,214 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-22 15:10:38,216 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825247226] [2021-11-22 15:10:38,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:10:38,224 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-22 15:10:38,224 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:10:38,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-22 15:10:38,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-22 15:10:38,275 INFO L87 Difference]: Start difference. First operand has 74 states, 66 states have (on average 1.4848484848484849) internal successors, (98), 73 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 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) [2021-11-22 15:10:38,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:10:38,314 INFO L93 Difference]: Finished difference Result 140 states and 185 transitions. [2021-11-22 15:10:38,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-22 15:10:38,317 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 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 [2021-11-22 15:10:38,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:10:38,336 INFO L225 Difference]: With dead ends: 140 [2021-11-22 15:10:38,337 INFO L226 Difference]: Without dead ends: 69 [2021-11-22 15:10:38,341 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-22 15:10:38,347 INFO L933 BasicCegarLoop]: 85 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:10:38,349 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:10:38,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2021-11-22 15:10:38,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2021-11-22 15:10:38,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 62 states have (on average 1.2903225806451613) internal successors, (80), 68 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:10:38,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 80 transitions. [2021-11-22 15:10:38,405 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 80 transitions. Word has length 25 [2021-11-22 15:10:38,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:10:38,408 INFO L470 AbstractCegarLoop]: Abstraction has 69 states and 80 transitions. [2021-11-22 15:10:38,409 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 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) [2021-11-22 15:10:38,409 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 80 transitions. [2021-11-22 15:10:38,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-22 15:10:38,411 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:10:38,411 INFO L514 BasicCegarLoop]: 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] [2021-11-22 15:10:38,412 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-22 15:10:38,412 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-22 15:10:38,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:10:38,420 INFO L85 PathProgramCache]: Analyzing trace with hash 88335055, now seen corresponding path program 1 times [2021-11-22 15:10:38,420 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:10:38,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067673176] [2021-11-22 15:10:38,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:10:38,421 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:10:38,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:10:38,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:10:38,700 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:10:38,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067673176] [2021-11-22 15:10:38,700 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067673176] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:10:38,701 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:10:38,708 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 15:10:38,708 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158123963] [2021-11-22 15:10:38,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:10:38,710 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:10:38,711 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:10:38,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:10:38,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:10:38,712 INFO L87 Difference]: Start difference. First operand 69 states and 80 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 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) [2021-11-22 15:10:38,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:10:38,813 INFO L93 Difference]: Finished difference Result 111 states and 126 transitions. [2021-11-22 15:10:38,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 15:10:38,814 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 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 [2021-11-22 15:10:38,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:10:38,816 INFO L225 Difference]: With dead ends: 111 [2021-11-22 15:10:38,816 INFO L226 Difference]: Without dead ends: 109 [2021-11-22 15:10:38,817 INFO L932 BasicCegarLoop]: 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 [2021-11-22 15:10:38,819 INFO L933 BasicCegarLoop]: 78 mSDtfsCounter, 49 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:10:38,820 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [49 Valid, 214 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:10:38,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2021-11-22 15:10:38,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 71. [2021-11-22 15:10:38,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 64 states have (on average 1.28125) internal successors, (82), 70 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:10:38,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 82 transitions. [2021-11-22 15:10:38,831 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 82 transitions. Word has length 28 [2021-11-22 15:10:38,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:10:38,832 INFO L470 AbstractCegarLoop]: Abstraction has 71 states and 82 transitions. [2021-11-22 15:10:38,832 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 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) [2021-11-22 15:10:38,833 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 82 transitions. [2021-11-22 15:10:38,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-22 15:10:38,834 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:10:38,834 INFO L514 BasicCegarLoop]: 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] [2021-11-22 15:10:38,834 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-22 15:10:38,835 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-22 15:10:38,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:10:38,836 INFO L85 PathProgramCache]: Analyzing trace with hash 89943769, now seen corresponding path program 1 times [2021-11-22 15:10:38,836 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:10:38,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608793592] [2021-11-22 15:10:38,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:10:38,837 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:10:38,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:10:39,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:10:39,092 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:10:39,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608793592] [2021-11-22 15:10:39,095 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608793592] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:10:39,096 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:10:39,096 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:10:39,096 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39738892] [2021-11-22 15:10:39,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:10:39,097 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:10:39,100 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:10:39,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:10:39,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:10:39,103 INFO L87 Difference]: Start difference. First operand 71 states and 82 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 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) [2021-11-22 15:10:39,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:10:39,136 INFO L93 Difference]: Finished difference Result 123 states and 141 transitions. [2021-11-22 15:10:39,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:10:39,143 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 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 [2021-11-22 15:10:39,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:10:39,145 INFO L225 Difference]: With dead ends: 123 [2021-11-22 15:10:39,145 INFO L226 Difference]: Without dead ends: 72 [2021-11-22 15:10:39,146 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:10:39,148 INFO L933 BasicCegarLoop]: 79 mSDtfsCounter, 0 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:10:39,148 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 156 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:10:39,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2021-11-22 15:10:39,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2021-11-22 15:10:39,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 65 states have (on average 1.2769230769230768) internal successors, (83), 71 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:10:39,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 83 transitions. [2021-11-22 15:10:39,163 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 83 transitions. Word has length 28 [2021-11-22 15:10:39,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:10:39,164 INFO L470 AbstractCegarLoop]: Abstraction has 72 states and 83 transitions. [2021-11-22 15:10:39,164 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 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) [2021-11-22 15:10:39,164 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 83 transitions. [2021-11-22 15:10:39,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-22 15:10:39,167 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:10:39,167 INFO L514 BasicCegarLoop]: 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] [2021-11-22 15:10:39,167 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-22 15:10:39,168 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-22 15:10:39,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:10:39,169 INFO L85 PathProgramCache]: Analyzing trace with hash -549704168, now seen corresponding path program 1 times [2021-11-22 15:10:39,169 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:10:39,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218375252] [2021-11-22 15:10:39,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:10:39,170 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:10:39,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:10:39,515 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:10:39,517 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:10:39,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218375252] [2021-11-22 15:10:39,520 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218375252] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 15:10:39,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [947242454] [2021-11-22 15:10:39,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:10:39,521 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:10:39,521 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7dca2e9-3903-46b6-90b3-995dd8654bd7/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:10:39,530 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7dca2e9-3903-46b6-90b3-995dd8654bd7/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 15:10:39,553 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7dca2e9-3903-46b6-90b3-995dd8654bd7/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-22 15:10:40,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:10:40,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-22 15:10:40,028 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:10:40,190 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:10:40,191 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:10:40,297 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:10:40,297 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [947242454] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 15:10:40,298 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-22 15:10:40,298 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2021-11-22 15:10:40,298 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906704043] [2021-11-22 15:10:40,299 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-22 15:10:40,299 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-22 15:10:40,301 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:10:40,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-22 15:10:40,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2021-11-22 15:10:40,306 INFO L87 Difference]: Start difference. First operand 72 states and 83 transitions. Second operand has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 7 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:10:40,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:10:40,381 INFO L93 Difference]: Finished difference Result 126 states and 146 transitions. [2021-11-22 15:10:40,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-22 15:10:40,383 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 7 states have internal predecessors, (34), 0 states have call successors, (0), 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 [2021-11-22 15:10:40,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:10:40,384 INFO L225 Difference]: With dead ends: 126 [2021-11-22 15:10:40,384 INFO L226 Difference]: Without dead ends: 75 [2021-11-22 15:10:40,385 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=30, Unknown=0, NotChecked=0, Total=56 [2021-11-22 15:10:40,386 INFO L933 BasicCegarLoop]: 79 mSDtfsCounter, 0 mSDsluCounter, 308 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 387 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:10:40,387 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 387 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:10:40,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2021-11-22 15:10:40,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2021-11-22 15:10:40,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 68 states have (on average 1.2647058823529411) internal successors, (86), 74 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:10:40,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 86 transitions. [2021-11-22 15:10:40,395 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 86 transitions. Word has length 29 [2021-11-22 15:10:40,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:10:40,396 INFO L470 AbstractCegarLoop]: Abstraction has 75 states and 86 transitions. [2021-11-22 15:10:40,396 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 7 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:10:40,397 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 86 transitions. [2021-11-22 15:10:40,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-11-22 15:10:40,398 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:10:40,398 INFO L514 BasicCegarLoop]: trace histogram [4, 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] [2021-11-22 15:10:40,434 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7dca2e9-3903-46b6-90b3-995dd8654bd7/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-22 15:10:40,625 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7dca2e9-3903-46b6-90b3-995dd8654bd7/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:10:40,626 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-22 15:10:40,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:10:40,626 INFO L85 PathProgramCache]: Analyzing trace with hash 1592903321, now seen corresponding path program 2 times [2021-11-22 15:10:40,627 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:10:40,627 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955801589] [2021-11-22 15:10:40,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:10:40,627 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:10:40,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:10:40,889 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:10:40,889 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:10:40,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955801589] [2021-11-22 15:10:40,890 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955801589] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 15:10:40,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1577975305] [2021-11-22 15:10:40,890 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-22 15:10:40,890 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:10:40,891 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7dca2e9-3903-46b6-90b3-995dd8654bd7/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:10:40,892 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7dca2e9-3903-46b6-90b3-995dd8654bd7/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 15:10:40,911 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7dca2e9-3903-46b6-90b3-995dd8654bd7/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-22 15:10:41,567 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-22 15:10:41,567 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-22 15:10:41,571 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 46 conjunts are in the unsatisfiable core [2021-11-22 15:10:41,575 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:10:41,758 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 14 treesize of output 10 [2021-11-22 15:10:41,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:10:41,837 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-22 15:10:41,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:10:41,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:10:41,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:10:41,924 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2021-11-22 15:10:42,045 INFO L354 Elim1Store]: treesize reduction 104, result has 20.0 percent of original size [2021-11-22 15:10:42,049 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 57 treesize of output 44 [2021-11-22 15:10:42,283 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-11-22 15:10:42,283 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 4 new quantified variables, introduced 6 case distinctions, treesize of input 60 treesize of output 16 [2021-11-22 15:10:42,312 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:10:42,312 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:10:42,960 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 568 treesize of output 560 [2021-11-22 15:10:43,334 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:10:43,334 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1577975305] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 15:10:43,334 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-22 15:10:43,335 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 9] total 21 [2021-11-22 15:10:43,335 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477584106] [2021-11-22 15:10:43,335 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-22 15:10:43,338 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-22 15:10:43,338 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:10:43,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-22 15:10:43,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=358, Unknown=0, NotChecked=0, Total=420 [2021-11-22 15:10:43,340 INFO L87 Difference]: Start difference. First operand 75 states and 86 transitions. Second operand has 21 states, 21 states have (on average 2.5714285714285716) internal successors, (54), 21 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:10:45,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:10:45,711 INFO L93 Difference]: Finished difference Result 444 states and 505 transitions. [2021-11-22 15:10:45,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-22 15:10:45,712 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.5714285714285716) internal successors, (54), 21 states have internal predecessors, (54), 0 states have call successors, (0), 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 32 [2021-11-22 15:10:45,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:10:45,717 INFO L225 Difference]: With dead ends: 444 [2021-11-22 15:10:45,717 INFO L226 Difference]: Without dead ends: 393 [2021-11-22 15:10:45,719 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=181, Invalid=941, Unknown=0, NotChecked=0, Total=1122 [2021-11-22 15:10:45,720 INFO L933 BasicCegarLoop]: 72 mSDtfsCounter, 789 mSDsluCounter, 1034 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 789 SdHoareTripleChecker+Valid, 1106 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-22 15:10:45,721 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [789 Valid, 1106 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-22 15:10:45,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2021-11-22 15:10:45,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 84. [2021-11-22 15:10:45,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 77 states have (on average 1.2857142857142858) internal successors, (99), 83 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:10:45,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 99 transitions. [2021-11-22 15:10:45,738 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 99 transitions. Word has length 32 [2021-11-22 15:10:45,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:10:45,738 INFO L470 AbstractCegarLoop]: Abstraction has 84 states and 99 transitions. [2021-11-22 15:10:45,738 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.5714285714285716) internal successors, (54), 21 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:10:45,739 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 99 transitions. [2021-11-22 15:10:45,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-22 15:10:45,740 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:10:45,740 INFO L514 BasicCegarLoop]: trace histogram [5, 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] [2021-11-22 15:10:45,787 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7dca2e9-3903-46b6-90b3-995dd8654bd7/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-11-22 15:10:45,953 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7dca2e9-3903-46b6-90b3-995dd8654bd7/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:10:45,954 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-22 15:10:45,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:10:45,954 INFO L85 PathProgramCache]: Analyzing trace with hash -695961392, now seen corresponding path program 1 times [2021-11-22 15:10:45,954 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:10:45,954 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188565741] [2021-11-22 15:10:45,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:10:45,955 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:10:46,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:10:46,295 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-22 15:10:46,296 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:10:46,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188565741] [2021-11-22 15:10:46,296 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188565741] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 15:10:46,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1508334527] [2021-11-22 15:10:46,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:10:46,301 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:10:46,301 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7dca2e9-3903-46b6-90b3-995dd8654bd7/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:10:46,302 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7dca2e9-3903-46b6-90b3-995dd8654bd7/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 15:10:46,344 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7dca2e9-3903-46b6-90b3-995dd8654bd7/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-22 15:10:46,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:10:46,590 INFO L263 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 38 conjunts are in the unsatisfiable core [2021-11-22 15:10:46,594 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:10:46,743 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-22 15:10:46,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:10:46,843 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-22 15:10:46,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:10:46,958 INFO L354 Elim1Store]: treesize reduction 46, result has 27.0 percent of original size [2021-11-22 15:10:46,959 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 38 treesize of output 40 [2021-11-22 15:10:47,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:10:47,128 INFO L354 Elim1Store]: treesize reduction 94, result has 21.7 percent of original size [2021-11-22 15:10:47,128 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 52 treesize of output 57 [2021-11-22 15:10:47,385 INFO L354 Elim1Store]: treesize reduction 164, result has 17.6 percent of original size [2021-11-22 15:10:47,386 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 85 treesize of output 69 [2021-11-22 15:11:00,309 INFO L354 Elim1Store]: treesize reduction 112, result has 0.9 percent of original size [2021-11-22 15:11:00,310 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 66 treesize of output 32 [2021-11-22 15:11:00,357 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 3 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:11:00,357 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:11:02,346 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr680#1_24| Int)) (or (< |v_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr680#1_24| (+ |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr680#1| 1)) (let ((.cse0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.base| (store (store (select |c_#memory_int| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.base|) (+ |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.offset| |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr680#1|) |c_ULTIMATE.start_#Ultimate.C_memset_#value#1|) (+ |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.offset| |v_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr680#1_24|) |c_ULTIMATE.start_#Ultimate.C_memset_#value#1|)) |c_ULTIMATE.start_aws_linked_list_node_reset_~node#1.base|) (+ |c_ULTIMATE.start_aws_linked_list_node_reset_~node#1.offset| 1)))) (<= (div (* .cse0 (- 1)) (- 256)) (+ (div (+ (- 256) .cse0) 256) 1))))) is different from false [2021-11-22 15:11:10,625 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 1253 treesize of output 1241 [2021-11-22 15:11:11,837 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 11 refuted. 1 times theorem prover too weak. 0 trivial. 5 not checked. [2021-11-22 15:11:11,841 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1508334527] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 15:11:11,841 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-22 15:11:11,841 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11, 11] total 26 [2021-11-22 15:11:11,841 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948750153] [2021-11-22 15:11:11,842 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-22 15:11:11,842 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-11-22 15:11:11,842 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:11:11,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-11-22 15:11:11,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=519, Unknown=6, NotChecked=46, Total=650 [2021-11-22 15:11:11,844 INFO L87 Difference]: Start difference. First operand 84 states and 99 transitions. Second operand has 26 states, 26 states have (on average 2.5) internal successors, (65), 26 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:11:13,842 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#memory_int| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.base|))) (and (= |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.base| |c_ULTIMATE.start_aws_linked_list_node_reset_~node#1.base|) (<= |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr680#1| 2) (= |c_ULTIMATE.start_#Ultimate.C_memset_#amount#1| 16) (= (select .cse0 (+ |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.offset| 1)) |c_ULTIMATE.start_#Ultimate.C_memset_#value#1|) (= |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.offset| |c_ULTIMATE.start_aws_linked_list_node_reset_~node#1.offset|) (<= 2 |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr680#1|) (forall ((|v_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr680#1_24| Int)) (or (< |v_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr680#1_24| (+ |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr680#1| 1)) (let ((.cse1 (select (select (store |c_#memory_int| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.base| (store (store (select |c_#memory_int| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.base|) (+ |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.offset| |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr680#1|) |c_ULTIMATE.start_#Ultimate.C_memset_#value#1|) (+ |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.offset| |v_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr680#1_24|) |c_ULTIMATE.start_#Ultimate.C_memset_#value#1|)) |c_ULTIMATE.start_aws_linked_list_node_reset_~node#1.base|) (+ |c_ULTIMATE.start_aws_linked_list_node_reset_~node#1.offset| 1)))) (<= (div (* .cse1 (- 1)) (- 256)) (+ (div (+ (- 256) .cse1) 256) 1))))) (= |c_ULTIMATE.start_#Ultimate.C_memset_#value#1| (select .cse0 |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.offset|)) (= |c_ULTIMATE.start_#Ultimate.C_memset_#value#1| 0))) is different from false [2021-11-22 15:11:15,153 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#memory_int| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.base|))) (and (= |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.base| |c_ULTIMATE.start_aws_linked_list_node_reset_~node#1.base|) (= |c_ULTIMATE.start_#Ultimate.C_memset_#amount#1| 16) (= (select .cse0 (+ |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.offset| 1)) |c_ULTIMATE.start_#Ultimate.C_memset_#value#1|) (= |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.offset| |c_ULTIMATE.start_aws_linked_list_node_reset_~node#1.offset|) (exists ((|v_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr680#1_20| Int)) (and (= (select (select |c_#memory_int| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.base|) (+ |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.offset| |v_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr680#1_20|)) |c_ULTIMATE.start_#Ultimate.C_memset_#value#1|) (<= 2 |v_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr680#1_20|) (<= (+ |v_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr680#1_20| 1) |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr680#1|))) (<= |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr680#1| 3) (forall ((|v_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr680#1_24| Int)) (or (< |v_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr680#1_24| (+ |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr680#1| 1)) (let ((.cse1 (select (select (store |c_#memory_int| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.base| (store (store (select |c_#memory_int| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.base|) (+ |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.offset| |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr680#1|) |c_ULTIMATE.start_#Ultimate.C_memset_#value#1|) (+ |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.offset| |v_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr680#1_24|) |c_ULTIMATE.start_#Ultimate.C_memset_#value#1|)) |c_ULTIMATE.start_aws_linked_list_node_reset_~node#1.base|) (+ |c_ULTIMATE.start_aws_linked_list_node_reset_~node#1.offset| 1)))) (<= (div (* .cse1 (- 1)) (- 256)) (+ (div (+ (- 256) .cse1) 256) 1))))) (= |c_ULTIMATE.start_#Ultimate.C_memset_#value#1| (select .cse0 |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.offset|)) (= |c_ULTIMATE.start_#Ultimate.C_memset_#value#1| 0) (<= 3 |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr680#1|))) is different from false [2021-11-22 15:11:16,678 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 (select |c_#memory_int| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.base|))) (and (= |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.base| |c_ULTIMATE.start_aws_linked_list_node_reset_~node#1.base|) (exists ((|v_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr680#1_20| Int) (|v_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr680#1_21| Int)) (let ((.cse0 (select |c_#memory_int| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.base|))) (and (= (select .cse0 (+ |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.offset| |v_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr680#1_21|)) |c_ULTIMATE.start_#Ultimate.C_memset_#value#1|) (<= (+ |v_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr680#1_20| 1) |v_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr680#1_21|) (<= (+ |v_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr680#1_21| 1) |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr680#1|) (= (select .cse0 (+ |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.offset| |v_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr680#1_20|)) |c_ULTIMATE.start_#Ultimate.C_memset_#value#1|) (<= 2 |v_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr680#1_20|)))) (= |c_ULTIMATE.start_#Ultimate.C_memset_#amount#1| 16) (= (select .cse1 (+ |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.offset| 1)) |c_ULTIMATE.start_#Ultimate.C_memset_#value#1|) (= |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.offset| |c_ULTIMATE.start_aws_linked_list_node_reset_~node#1.offset|) (<= 4 |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr680#1|) (forall ((|v_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr680#1_24| Int)) (or (< |v_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr680#1_24| (+ |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr680#1| 1)) (let ((.cse2 (select (select (store |c_#memory_int| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.base| (store (store (select |c_#memory_int| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.base|) (+ |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.offset| |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr680#1|) |c_ULTIMATE.start_#Ultimate.C_memset_#value#1|) (+ |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.offset| |v_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr680#1_24|) |c_ULTIMATE.start_#Ultimate.C_memset_#value#1|)) |c_ULTIMATE.start_aws_linked_list_node_reset_~node#1.base|) (+ |c_ULTIMATE.start_aws_linked_list_node_reset_~node#1.offset| 1)))) (<= (div (* .cse2 (- 1)) (- 256)) (+ (div (+ (- 256) .cse2) 256) 1))))) (= |c_ULTIMATE.start_#Ultimate.C_memset_#value#1| (select .cse1 |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.offset|)) (= |c_ULTIMATE.start_#Ultimate.C_memset_#value#1| 0) (<= |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr680#1| 4))) is different from false [2021-11-22 15:11:17,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:11:17,344 INFO L93 Difference]: Finished difference Result 276 states and 315 transitions. [2021-11-22 15:11:17,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-22 15:11:17,345 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.5) internal successors, (65), 26 states have internal predecessors, (65), 0 states have call successors, (0), 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 36 [2021-11-22 15:11:17,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:11:17,349 INFO L225 Difference]: With dead ends: 276 [2021-11-22 15:11:17,349 INFO L226 Difference]: Without dead ends: 223 [2021-11-22 15:11:17,354 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 27.5s TimeCoverageRelationStatistics Valid=120, Invalid=817, Unknown=9, NotChecked=244, Total=1190 [2021-11-22 15:11:17,357 INFO L933 BasicCegarLoop]: 123 mSDtfsCounter, 241 mSDsluCounter, 2044 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 2167 SdHoareTripleChecker+Invalid, 398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 241 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-22 15:11:17,358 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [241 Valid, 2167 Invalid, 398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 147 Invalid, 0 Unknown, 241 Unchecked, 0.4s Time] [2021-11-22 15:11:17,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2021-11-22 15:11:17,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 90. [2021-11-22 15:11:17,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 83 states have (on average 1.2650602409638554) internal successors, (105), 89 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) [2021-11-22 15:11:17,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 105 transitions. [2021-11-22 15:11:17,386 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 105 transitions. Word has length 36 [2021-11-22 15:11:17,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:11:17,387 INFO L470 AbstractCegarLoop]: Abstraction has 90 states and 105 transitions. [2021-11-22 15:11:17,387 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.5) internal successors, (65), 26 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:11:17,388 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 105 transitions. [2021-11-22 15:11:17,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-22 15:11:17,397 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:11:17,400 INFO L514 BasicCegarLoop]: trace histogram [8, 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] [2021-11-22 15:11:17,449 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7dca2e9-3903-46b6-90b3-995dd8654bd7/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-22 15:11:17,618 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7dca2e9-3903-46b6-90b3-995dd8654bd7/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-11-22 15:11:17,618 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-22 15:11:17,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:11:17,619 INFO L85 PathProgramCache]: Analyzing trace with hash -1164624295, now seen corresponding path program 3 times [2021-11-22 15:11:17,619 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:11:17,619 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941552899] [2021-11-22 15:11:17,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:11:17,620 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:11:17,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:11:18,058 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:11:18,058 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:11:18,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941552899] [2021-11-22 15:11:18,059 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941552899] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 15:11:18,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [741878478] [2021-11-22 15:11:18,059 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-22 15:11:18,059 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:11:18,059 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7dca2e9-3903-46b6-90b3-995dd8654bd7/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:11:18,065 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7dca2e9-3903-46b6-90b3-995dd8654bd7/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 15:11:18,071 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7dca2e9-3903-46b6-90b3-995dd8654bd7/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-22 15:11:19,682 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-11-22 15:11:19,682 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-22 15:11:19,687 INFO L263 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 70 conjunts are in the unsatisfiable core [2021-11-22 15:11:19,690 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:11:19,883 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-22 15:11:19,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:11:19,960 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-22 15:11:20,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:11:20,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:11:20,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:11:20,053 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2021-11-22 15:11:20,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:11:20,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:11:20,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:11:20,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:11:20,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:11:20,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:11:20,170 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 44 [2021-11-22 15:11:20,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:11:20,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:11:20,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:11:20,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:11:20,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:11:20,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:11:20,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:11:20,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:11:20,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:11:20,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:11:20,288 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 56 [2021-11-22 15:11:20,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:11:20,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:11:20,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:11:20,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:11:20,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:11:20,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:11:20,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:11:20,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:11:20,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:11:20,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:11:20,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:11:20,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:11:20,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:11:20,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:11:20,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:11:20,432 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 69 [2021-11-22 15:11:20,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:11:20,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:11:20,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:11:20,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:11:20,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:11:20,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:11:20,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:11:20,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:11:20,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:11:20,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:11:20,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:11:20,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:11:20,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:11:20,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:11:20,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:11:20,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:11:20,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:11:20,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:11:20,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:11:20,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:11:20,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:11:20,583 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 80 [2021-11-22 15:11:20,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:11:20,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:11:20,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:11:20,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:11:20,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:11:20,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:11:20,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:11:20,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:11:20,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:11:20,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:11:20,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:11:20,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:11:20,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:11:20,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:11:20,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:11:20,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:11:20,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:11:20,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:11:20,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:11:20,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:11:20,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:11:20,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:11:20,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:11:20,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:11:20,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:11:20,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:11:20,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:11:20,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:11:20,781 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-22 15:11:20,782 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 28 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 117 treesize of output 92 [2021-11-22 15:11:21,166 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-22 15:11:21,167 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 92 treesize of output 28 [2021-11-22 15:11:21,211 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:11:21,211 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:11:23,020 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 9392 treesize of output 9384 [2021-11-22 15:11:24,155 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:11:24,156 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [741878478] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 15:11:24,156 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-22 15:11:24,156 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 15, 13] total 35 [2021-11-22 15:11:24,156 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085086341] [2021-11-22 15:11:24,156 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-22 15:11:24,157 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2021-11-22 15:11:24,157 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:11:24,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-11-22 15:11:24,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=1039, Unknown=0, NotChecked=0, Total=1190 [2021-11-22 15:11:24,159 INFO L87 Difference]: Start difference. First operand 90 states and 105 transitions. Second operand has 35 states, 35 states have (on average 2.3714285714285714) internal successors, (83), 35 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:11:47,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:11:47,617 INFO L93 Difference]: Finished difference Result 831 states and 948 transitions. [2021-11-22 15:11:47,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-11-22 15:11:47,618 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.3714285714285714) internal successors, (83), 35 states have internal predecessors, (83), 0 states have call successors, (0), 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 36 [2021-11-22 15:11:47,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:11:47,622 INFO L225 Difference]: With dead ends: 831 [2021-11-22 15:11:47,623 INFO L226 Difference]: Without dead ends: 769 [2021-11-22 15:11:47,625 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 656 ImplicationChecksByTransitivity, 22.0s TimeCoverageRelationStatistics Valid=731, Invalid=3691, Unknown=0, NotChecked=0, Total=4422 [2021-11-22 15:11:47,626 INFO L933 BasicCegarLoop]: 67 mSDtfsCounter, 4644 mSDsluCounter, 1488 mSDsCounter, 0 mSdLazyCounter, 448 mSolverCounterSat, 151 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4644 SdHoareTripleChecker+Valid, 1555 SdHoareTripleChecker+Invalid, 599 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 151 IncrementalHoareTripleChecker+Valid, 448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:11:47,627 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4644 Valid, 1555 Invalid, 599 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [151 Valid, 448 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2021-11-22 15:11:47,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 769 states. [2021-11-22 15:11:47,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 769 to 92. [2021-11-22 15:11:47,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 85 states have (on average 1.3058823529411765) internal successors, (111), 91 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:11:47,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 111 transitions. [2021-11-22 15:11:47,656 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 111 transitions. Word has length 36 [2021-11-22 15:11:47,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:11:47,658 INFO L470 AbstractCegarLoop]: Abstraction has 92 states and 111 transitions. [2021-11-22 15:11:47,658 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.3714285714285714) internal successors, (83), 35 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:11:47,658 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 111 transitions. [2021-11-22 15:11:47,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-22 15:11:47,659 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:11:47,659 INFO L514 BasicCegarLoop]: trace histogram [9, 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] [2021-11-22 15:11:47,669 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7dca2e9-3903-46b6-90b3-995dd8654bd7/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-22 15:11:47,865 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7dca2e9-3903-46b6-90b3-995dd8654bd7/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:11:47,865 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-22 15:11:47,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:11:47,867 INFO L85 PathProgramCache]: Analyzing trace with hash 1076236432, now seen corresponding path program 2 times [2021-11-22 15:11:47,867 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:11:47,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085357964] [2021-11-22 15:11:47,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:11:47,867 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:11:47,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:11:48,315 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-22 15:11:48,316 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:11:48,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085357964] [2021-11-22 15:11:48,316 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085357964] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 15:11:48,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1380239587] [2021-11-22 15:11:48,317 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-22 15:11:48,317 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:11:48,317 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7dca2e9-3903-46b6-90b3-995dd8654bd7/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:11:48,321 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7dca2e9-3903-46b6-90b3-995dd8654bd7/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 15:11:48,341 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7dca2e9-3903-46b6-90b3-995dd8654bd7/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-22 15:11:48,625 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-22 15:11:48,625 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-22 15:11:48,628 INFO L263 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 57 conjunts are in the unsatisfiable core [2021-11-22 15:11:48,633 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:11:48,706 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-22 15:11:48,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:11:48,762 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-22 15:11:48,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:11:48,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:11:48,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:11:48,849 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2021-11-22 15:11:48,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:11:48,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:11:48,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:11:48,962 INFO L354 Elim1Store]: treesize reduction 72, result has 26.5 percent of original size [2021-11-22 15:11:48,962 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 47 treesize of output 52 [2021-11-22 15:11:49,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:11:49,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:11:49,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:11:49,118 INFO L354 Elim1Store]: treesize reduction 132, result has 21.0 percent of original size [2021-11-22 15:11:49,119 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 61 treesize of output 69 [2021-11-22 15:11:51,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:11:51,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:11:51,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:11:51,330 INFO L354 Elim1Store]: treesize reduction 204, result has 17.7 percent of original size [2021-11-22 15:11:51,331 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 12 case distinctions, treesize of input 75 treesize of output 86 [2021-11-22 15:11:55,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:11:55,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:11:55,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:11:55,590 INFO L354 Elim1Store]: treesize reduction 288, result has 15.5 percent of original size [2021-11-22 15:11:55,590 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 18 case distinctions, treesize of input 89 treesize of output 103 [2021-11-22 15:12:01,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:12:01,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:12:01,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:12:01,982 INFO L354 Elim1Store]: treesize reduction 384, result has 13.9 percent of original size [2021-11-22 15:12:01,983 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 3 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 25 case distinctions, treesize of input 103 treesize of output 120 [2021-11-22 15:12:10,508 INFO L354 Elim1Store]: treesize reduction 524, result has 11.9 percent of original size [2021-11-22 15:12:10,509 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 36 case distinctions, treesize of input 160 treesize of output 132 [2021-11-22 15:12:24,523 INFO L354 Elim1Store]: treesize reduction 416, result has 0.2 percent of original size [2021-11-22 15:12:24,524 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 165 treesize of output 59 [2021-11-22 15:12:24,567 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 5 proven. 32 refuted. 10 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:12:24,567 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:12:26,954 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr680#1_56| Int)) (or (let ((.cse0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.base| (store (store (select |c_#memory_int| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.base|) (+ |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.offset| |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr680#1|) |c_ULTIMATE.start_#Ultimate.C_memset_#value#1|) (+ |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.offset| |v_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr680#1_56|) |c_ULTIMATE.start_#Ultimate.C_memset_#value#1|)) |c_ULTIMATE.start_aws_linked_list_node_reset_~node#1.base|) (+ |c_ULTIMATE.start_aws_linked_list_node_reset_~node#1.offset| 1)))) (<= (div (* .cse0 (- 1)) (- 256)) (+ (div (+ (- 256) .cse0) 256) 1))) (< |v_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr680#1_56| (+ |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr680#1| 1)))) is different from false [2021-11-22 15:14:07,181 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 20018 treesize of output 20006 [2021-11-22 15:14:07,287 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-11-22 15:14:07,287 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-11-22 15:14:07,287 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2021-11-22 15:14:07,287 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363179797] [2021-11-22 15:14:07,288 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-11-22 15:14:07,288 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-22 15:14:07,288 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:14:07,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-22 15:14:07,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=1052, Unknown=55, NotChecked=68, Total=1332 [2021-11-22 15:14:07,290 INFO L87 Difference]: Start difference. First operand 92 states and 111 transitions. Second operand has 12 states, 12 states have (on average 3.25) internal successors, (39), 12 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:14:07,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:14:07,460 INFO L93 Difference]: Finished difference Result 145 states and 171 transitions. [2021-11-22 15:14:07,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-22 15:14:07,461 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.25) internal successors, (39), 12 states have internal predecessors, (39), 0 states have call successors, (0), 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 40 [2021-11-22 15:14:07,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:14:07,464 INFO L225 Difference]: With dead ends: 145 [2021-11-22 15:14:07,464 INFO L226 Difference]: Without dead ends: 92 [2021-11-22 15:14:07,467 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 134.1s TimeCoverageRelationStatistics Valid=157, Invalid=1052, Unknown=55, NotChecked=68, Total=1332 [2021-11-22 15:14:07,468 INFO L933 BasicCegarLoop]: 79 mSDtfsCounter, 0 mSDsluCounter, 616 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 695 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 15:14:07,468 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 695 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 15:14:07,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2021-11-22 15:14:07,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2021-11-22 15:14:07,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 85 states have (on average 1.2941176470588236) internal successors, (110), 91 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:14:07,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 110 transitions. [2021-11-22 15:14:07,480 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 110 transitions. Word has length 40 [2021-11-22 15:14:07,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:14:07,483 INFO L470 AbstractCegarLoop]: Abstraction has 92 states and 110 transitions. [2021-11-22 15:14:07,484 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.25) internal successors, (39), 12 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:14:07,484 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 110 transitions. [2021-11-22 15:14:07,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-22 15:14:07,488 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:14:07,489 INFO L514 BasicCegarLoop]: trace histogram [10, 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] [2021-11-22 15:14:07,532 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7dca2e9-3903-46b6-90b3-995dd8654bd7/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-22 15:14:07,705 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7dca2e9-3903-46b6-90b3-995dd8654bd7/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:14:07,705 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-22 15:14:07,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:14:07,706 INFO L85 PathProgramCache]: Analyzing trace with hash -1214387889, now seen corresponding path program 3 times [2021-11-22 15:14:07,706 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:14:07,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063766990] [2021-11-22 15:14:07,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:14:07,707 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:14:07,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:14:08,085 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-22 15:14:08,085 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:14:08,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063766990] [2021-11-22 15:14:08,086 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063766990] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 15:14:08,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [544941410] [2021-11-22 15:14:08,086 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-22 15:14:08,086 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:14:08,086 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7dca2e9-3903-46b6-90b3-995dd8654bd7/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:14:08,095 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7dca2e9-3903-46b6-90b3-995dd8654bd7/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 15:14:08,096 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7dca2e9-3903-46b6-90b3-995dd8654bd7/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-22 15:14:11,260 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-11-22 15:14:11,260 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-22 15:14:11,266 INFO L263 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 82 conjunts are in the unsatisfiable core [2021-11-22 15:14:11,273 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:14:11,406 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 14 treesize of output 10 [2021-11-22 15:14:11,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:14:11,476 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 25 treesize of output 24 [2021-11-22 15:14:11,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:14:11,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:14:11,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:14:11,554 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 37 [2021-11-22 15:14:11,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:14:11,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:14:11,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:14:11,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:14:11,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:14:11,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:14:11,629 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 44 [2021-11-22 15:14:11,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:14:11,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:14:11,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:14:11,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:14:11,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:14:11,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:14:11,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:14:11,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:14:11,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:14:11,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:14:11,713 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 57 [2021-11-22 15:14:11,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:14:11,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:14:11,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:14:11,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:14:11,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:14:11,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:14:11,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:14:11,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:14:11,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:14:11,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:14:11,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:14:11,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:14:11,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:14:11,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:14:11,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:14:11,819 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 70 [2021-11-22 15:14:11,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:14:11,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:14:11,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:14:11,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:14:11,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:14:11,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:14:11,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:14:11,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:14:11,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:14:11,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:14:11,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:14:11,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:14:11,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:14:11,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:14:11,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:14:11,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:14:11,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:14:11,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:14:11,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:14:11,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:14:11,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:14:11,946 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 83 [2021-11-22 15:14:12,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:14:12,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:14:12,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:14:12,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:14:12,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:14:12,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:14:12,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:14:12,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:14:12,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:14:12,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:14:12,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:14:12,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:14:12,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:14:12,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:14:12,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:14:12,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:14:12,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:14:12,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:14:12,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:14:12,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:14:12,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:14:12,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:14:12,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:14:12,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:14:12,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:14:12,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:14:12,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:14:12,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:14:12,071 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 28 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 92 [2021-11-22 15:14:12,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:14:12,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:14:12,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:14:12,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:14:12,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:14:12,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:14:12,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:14:12,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:14:12,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:14:12,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:14:12,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:14:12,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:14:12,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:14:12,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:14:12,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:14:12,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:14:12,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:14:12,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:14:12,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:14:12,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:14:12,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:14:12,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:14:12,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:14:12,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:14:12,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:14:12,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:14:12,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:14:12,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:14:12,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:14:12,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:14:12,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:14:12,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:14:12,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:14:12,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:14:12,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:14:12,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:14:12,224 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 36 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 104 [2021-11-22 15:14:12,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:14:12,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:14:12,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:14:12,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:14:12,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:14:12,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:14:12,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:14:12,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:14:12,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:14:12,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:14:12,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:14:12,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:14:12,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:14:12,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:14:12,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:14:12,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:14:12,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:14:12,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:14:12,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:14:12,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:14:12,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:14:12,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:14:12,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:14:12,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:14:12,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:14:12,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:14:12,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:14:12,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:14:12,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:14:12,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:14:12,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:14:12,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:14:12,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:14:12,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:14:12,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:14:12,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:14:12,512 INFO L354 Elim1Store]: treesize reduction 228, result has 26.0 percent of original size [2021-11-22 15:14:12,512 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 36 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 45 case distinctions, treesize of input 150 treesize of output 119 [2021-11-22 15:14:13,176 INFO L354 Elim1Store]: treesize reduction 72, result has 1.4 percent of original size [2021-11-22 15:14:13,176 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 36 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 117 treesize of output 37 [2021-11-22 15:14:13,216 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:14:13,216 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:14:30,875 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr680#1_75| Int)) (or (< |v_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr680#1_75| (+ 2 |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr680#1|)) (let ((.cse0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.base| (store (store (store (select |c_#memory_int| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.base|) (+ |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.offset| |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr680#1|) |c_ULTIMATE.start_#Ultimate.C_memset_#value#1|) (+ |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.offset| |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr680#1| 1) |c_ULTIMATE.start_#Ultimate.C_memset_#value#1|) (+ |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.offset| |v_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr680#1_75|) |c_ULTIMATE.start_#Ultimate.C_memset_#value#1|)) |c_ULTIMATE.start_aws_linked_list_node_reset_~node#1.base|) (+ |c_ULTIMATE.start_aws_linked_list_node_reset_~node#1.offset| 1)))) (<= (div (* .cse0 (- 1)) (- 256)) (+ (div (+ (- 256) .cse0) 256) 1))))) is different from false [2021-11-22 15:16:28,615 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 41457 treesize of output 41445