./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_hash_table_put_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9036b10f-8758-4e3e-93cd-44f46c118ffe/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9036b10f-8758-4e3e-93cd-44f46c118ffe/bin/uautomizer-J5u9QxTXDZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9036b10f-8758-4e3e-93cd-44f46c118ffe/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9036b10f-8758-4e3e-93cd-44f46c118ffe/bin/uautomizer-J5u9QxTXDZ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_hash_table_put_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9036b10f-8758-4e3e-93cd-44f46c118ffe/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9036b10f-8758-4e3e-93cd-44f46c118ffe/bin/uautomizer-J5u9QxTXDZ --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 7e3410638a547f2efce35a13c7d23c64ee660b1c493ec273ce9d4043edc218c3 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-dbf71c6-m [2022-10-17 10:52:19,667 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 10:52:19,671 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 10:52:19,723 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 10:52:19,723 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 10:52:19,727 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 10:52:19,730 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 10:52:19,735 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 10:52:19,738 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 10:52:19,743 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 10:52:19,744 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 10:52:19,747 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 10:52:19,747 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 10:52:19,750 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 10:52:19,752 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 10:52:19,754 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 10:52:19,756 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 10:52:19,757 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 10:52:19,759 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 10:52:19,766 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 10:52:19,768 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 10:52:19,769 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 10:52:19,772 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 10:52:19,773 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 10:52:19,783 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 10:52:19,783 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 10:52:19,784 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 10:52:19,786 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 10:52:19,786 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 10:52:19,787 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 10:52:19,788 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 10:52:19,789 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 10:52:19,792 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 10:52:19,793 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 10:52:19,794 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 10:52:19,795 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 10:52:19,795 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 10:52:19,796 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 10:52:19,796 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 10:52:19,797 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 10:52:19,798 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 10:52:19,799 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9036b10f-8758-4e3e-93cd-44f46c118ffe/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-10-17 10:52:19,849 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 10:52:19,849 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 10:52:19,850 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 10:52:19,850 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 10:52:19,851 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 10:52:19,852 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 10:52:19,852 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 10:52:19,853 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 10:52:19,853 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 10:52:19,853 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 10:52:19,854 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 10:52:19,855 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 10:52:19,855 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 10:52:19,855 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 10:52:19,855 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 10:52:19,855 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 10:52:19,856 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 10:52:19,856 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 10:52:19,856 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 10:52:19,856 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 10:52:19,857 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 10:52:19,857 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:52:19,869 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 10:52:19,869 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 10:52:19,869 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 10:52:19,869 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-17 10:52:19,869 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 10:52:19,870 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-17 10:52:19,870 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-10-17 10:52:19,870 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 10:52:19,870 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_9036b10f-8758-4e3e-93cd-44f46c118ffe/bin/uautomizer-J5u9QxTXDZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9036b10f-8758-4e3e-93cd-44f46c118ffe/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7e3410638a547f2efce35a13c7d23c64ee660b1c493ec273ce9d4043edc218c3 [2022-10-17 10:52:20,128 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 10:52:20,159 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 10:52:20,163 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 10:52:20,164 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 10:52:20,165 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 10:52:20,166 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9036b10f-8758-4e3e-93cd-44f46c118ffe/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/aws-c-common/aws_hash_table_put_harness.i [2022-10-17 10:52:20,243 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9036b10f-8758-4e3e-93cd-44f46c118ffe/bin/uautomizer-J5u9QxTXDZ/data/c6023bbd2/1de9e3bfc5d24f64bf4ca2a02bc54c15/FLAGc28f4d0fb [2022-10-17 10:52:21,145 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 10:52:21,146 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9036b10f-8758-4e3e-93cd-44f46c118ffe/sv-benchmarks/c/aws-c-common/aws_hash_table_put_harness.i [2022-10-17 10:52:21,185 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9036b10f-8758-4e3e-93cd-44f46c118ffe/bin/uautomizer-J5u9QxTXDZ/data/c6023bbd2/1de9e3bfc5d24f64bf4ca2a02bc54c15/FLAGc28f4d0fb [2022-10-17 10:52:21,564 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9036b10f-8758-4e3e-93cd-44f46c118ffe/bin/uautomizer-J5u9QxTXDZ/data/c6023bbd2/1de9e3bfc5d24f64bf4ca2a02bc54c15 [2022-10-17 10:52:21,567 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 10:52:21,568 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 10:52:21,569 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 10:52:21,569 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 10:52:21,573 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 10:52:21,574 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:52:21" (1/1) ... [2022-10-17 10:52:21,575 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d86ae47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:52:21, skipping insertion in model container [2022-10-17 10:52:21,575 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:52:21" (1/1) ... [2022-10-17 10:52:21,582 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 10:52:21,707 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 10:52:21,988 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_9036b10f-8758-4e3e-93cd-44f46c118ffe/sv-benchmarks/c/aws-c-common/aws_hash_table_put_harness.i[4492,4505] [2022-10-17 10:52:21,996 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_9036b10f-8758-4e3e-93cd-44f46c118ffe/sv-benchmarks/c/aws-c-common/aws_hash_table_put_harness.i[4552,4565] [2022-10-17 10:52:23,111 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:52:23,112 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:52:23,113 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:52:23,113 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:52:23,115 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:52:23,129 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:52:23,130 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:52:23,132 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:52:23,133 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:52:23,135 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:52:23,136 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:52:23,137 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:52:23,137 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:52:23,649 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-10-17 10:52:23,650 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-10-17 10:52:23,651 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-10-17 10:52:23,652 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-10-17 10:52:23,654 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-10-17 10:52:23,660 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-10-17 10:52:23,661 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-10-17 10:52:23,662 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-10-17 10:52:23,662 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-10-17 10:52:23,663 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-10-17 10:52:23,897 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-10-17 10:52:24,286 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:52:24,287 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:52:24,309 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:52:24,310 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:52:24,316 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:52:24,316 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:52:24,331 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:52:24,332 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:52:24,333 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:52:24,333 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:52:24,333 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:52:24,334 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:52:24,334 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:52:24,368 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:52:24,397 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 10:52:24,410 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_9036b10f-8758-4e3e-93cd-44f46c118ffe/sv-benchmarks/c/aws-c-common/aws_hash_table_put_harness.i[4492,4505] [2022-10-17 10:52:24,411 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_9036b10f-8758-4e3e-93cd-44f46c118ffe/sv-benchmarks/c/aws-c-common/aws_hash_table_put_harness.i[4552,4565] [2022-10-17 10:52:24,479 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:52:24,479 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:52:24,480 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:52:24,480 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:52:24,481 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:52:24,491 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:52:24,492 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:52:24,493 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:52:24,493 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:52:24,494 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:52:24,495 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:52:24,495 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:52:24,496 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:52:24,538 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-10-17 10:52:24,539 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-10-17 10:52:24,540 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-10-17 10:52:24,541 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-10-17 10:52:24,542 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-10-17 10:52:24,543 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-10-17 10:52:24,543 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-10-17 10:52:24,544 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-10-17 10:52:24,544 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-10-17 10:52:24,544 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-10-17 10:52:24,589 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-10-17 10:52:24,729 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:52:24,730 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:52:24,738 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:52:24,739 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:52:24,743 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:52:24,743 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:52:24,757 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:52:24,758 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:52:24,760 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:52:24,761 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:52:24,761 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:52:24,762 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:52:24,762 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:52:24,821 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:52:25,110 INFO L208 MainTranslator]: Completed translation [2022-10-17 10:52:25,111 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:52:25 WrapperNode [2022-10-17 10:52:25,111 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 10:52:25,112 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 10:52:25,112 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 10:52:25,112 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 10:52:25,119 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:52:25" (1/1) ... [2022-10-17 10:52:25,292 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:52:25" (1/1) ... [2022-10-17 10:52:25,423 INFO L138 Inliner]: procedures = 775, calls = 2489, calls flagged for inlining = 70, calls inlined = 25, statements flattened = 1393 [2022-10-17 10:52:25,424 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 10:52:25,425 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 10:52:25,425 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 10:52:25,425 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 10:52:25,434 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:52:25" (1/1) ... [2022-10-17 10:52:25,434 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:52:25" (1/1) ... [2022-10-17 10:52:25,452 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:52:25" (1/1) ... [2022-10-17 10:52:25,453 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:52:25" (1/1) ... [2022-10-17 10:52:25,522 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:52:25" (1/1) ... [2022-10-17 10:52:25,541 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:52:25" (1/1) ... [2022-10-17 10:52:25,573 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:52:25" (1/1) ... [2022-10-17 10:52:25,583 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:52:25" (1/1) ... [2022-10-17 10:52:25,604 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 10:52:25,605 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 10:52:25,605 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 10:52:25,605 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 10:52:25,606 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:52:25" (1/1) ... [2022-10-17 10:52:25,612 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:52:25,624 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9036b10f-8758-4e3e-93cd-44f46c118ffe/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:52:25,636 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9036b10f-8758-4e3e-93cd-44f46c118ffe/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 10:52:25,649 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9036b10f-8758-4e3e-93cd-44f46c118ffe/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 10:52:25,692 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2022-10-17 10:52:25,692 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-10-17 10:52:25,693 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-10-17 10:52:25,693 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-17 10:52:25,693 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2022-10-17 10:52:25,693 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2022-10-17 10:52:25,695 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-10-17 10:52:25,695 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-10-17 10:52:25,695 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_is_valid [2022-10-17 10:52:25,695 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_is_valid [2022-10-17 10:52:25,695 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-10-17 10:52:25,695 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 10:52:25,696 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-10-17 10:52:25,696 INFO L130 BoogieDeclarations]: Found specification of procedure s_emplace_item [2022-10-17 10:52:25,696 INFO L138 BoogieDeclarations]: Found implementation of procedure s_emplace_item [2022-10-17 10:52:25,696 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 10:52:25,696 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 10:52:25,697 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-10-17 10:52:25,697 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-10-17 10:52:25,697 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2022-10-17 10:52:25,697 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2022-10-17 10:52:25,697 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_release [2022-10-17 10:52:25,697 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_release [2022-10-17 10:52:25,698 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-17 10:52:25,698 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2022-10-17 10:52:25,698 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2022-10-17 10:52:25,698 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-10-17 10:52:25,699 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2022-10-17 10:52:25,699 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2022-10-17 10:52:25,699 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-17 10:52:25,699 INFO L130 BoogieDeclarations]: Found specification of procedure s_hash_for [2022-10-17 10:52:25,699 INFO L138 BoogieDeclarations]: Found implementation of procedure s_hash_for [2022-10-17 10:52:25,700 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_power_of_two [2022-10-17 10:52:25,700 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_power_of_two [2022-10-17 10:52:25,700 INFO L130 BoogieDeclarations]: Found specification of procedure s_update_template_size [2022-10-17 10:52:25,700 INFO L138 BoogieDeclarations]: Found implementation of procedure s_update_template_size [2022-10-17 10:52:25,700 INFO L130 BoogieDeclarations]: Found specification of procedure s_hash_keys_eq [2022-10-17 10:52:25,701 INFO L138 BoogieDeclarations]: Found implementation of procedure s_hash_keys_eq [2022-10-17 10:52:25,701 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_uninterpreted_equals [2022-10-17 10:52:25,701 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_uninterpreted_equals [2022-10-17 10:52:25,701 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-17 10:52:25,702 INFO L130 BoogieDeclarations]: Found specification of procedure aws_allocator_is_valid [2022-10-17 10:52:25,702 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_allocator_is_valid [2022-10-17 10:52:25,705 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2022-10-17 10:52:25,706 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_calloc [2022-10-17 10:52:25,706 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_calloc [2022-10-17 10:52:25,706 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2022-10-17 10:52:25,706 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_required_bytes [2022-10-17 10:52:25,707 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_required_bytes [2022-10-17 10:52:25,707 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-10-17 10:52:25,707 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-10-17 10:52:25,708 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_uninterpreted_hasher [2022-10-17 10:52:25,713 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_uninterpreted_hasher [2022-10-17 10:52:25,714 INFO L130 BoogieDeclarations]: Found specification of procedure s_safe_eq_check [2022-10-17 10:52:25,714 INFO L138 BoogieDeclarations]: Found implementation of procedure s_safe_eq_check [2022-10-17 10:52:25,714 INFO L130 BoogieDeclarations]: Found specification of procedure s_find_entry [2022-10-17 10:52:25,714 INFO L138 BoogieDeclarations]: Found implementation of procedure s_find_entry [2022-10-17 10:52:25,714 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-10-17 10:52:25,714 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-10-17 10:52:25,714 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_table_is_valid [2022-10-17 10:52:25,715 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_table_is_valid [2022-10-17 10:52:25,715 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-10-17 10:52:25,715 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2022-10-17 10:52:25,715 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2022-10-17 10:52:25,715 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2022-10-17 10:52:25,715 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2022-10-17 10:52:25,715 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2022-10-17 10:52:25,716 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2022-10-17 10:52:25,716 INFO L130 BoogieDeclarations]: Found specification of procedure s_alloc_state [2022-10-17 10:52:25,716 INFO L138 BoogieDeclarations]: Found implementation of procedure s_alloc_state [2022-10-17 10:52:25,716 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-10-17 10:52:25,716 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-10-17 10:52:25,716 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 10:52:26,207 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 10:52:26,209 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 10:52:26,532 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##5: assume !true; [2022-10-17 10:52:26,601 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume !true; [2022-10-17 10:52:27,243 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##7: assume !true; [2022-10-17 10:52:27,243 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##29: assume !true; [2022-10-17 10:52:28,211 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 10:52:28,226 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 10:52:28,226 INFO L300 CfgBuilder]: Removed 11 assume(true) statements. [2022-10-17 10:52:28,230 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:52:28 BoogieIcfgContainer [2022-10-17 10:52:28,231 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 10:52:28,233 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 10:52:28,233 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 10:52:28,237 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 10:52:28,237 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 10:52:21" (1/3) ... [2022-10-17 10:52:28,238 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f7fcc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:52:28, skipping insertion in model container [2022-10-17 10:52:28,238 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:52:25" (2/3) ... [2022-10-17 10:52:28,238 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f7fcc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:52:28, skipping insertion in model container [2022-10-17 10:52:28,238 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:52:28" (3/3) ... [2022-10-17 10:52:28,240 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_hash_table_put_harness.i [2022-10-17 10:52:28,257 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 10:52:28,258 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-17 10:52:28,343 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 10:52:28,355 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@3b9b289a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 10:52:28,356 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-17 10:52:28,366 INFO L276 IsEmpty]: Start isEmpty. Operand has 361 states, 248 states have (on average 1.282258064516129) internal successors, (318), 245 states have internal predecessors, (318), 86 states have call successors, (86), 29 states have call predecessors, (86), 29 states have return successors, (86), 86 states have call predecessors, (86), 86 states have call successors, (86) [2022-10-17 10:52:28,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-10-17 10:52:28,390 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:52:28,391 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:52:28,391 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:52:28,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:52:28,400 INFO L85 PathProgramCache]: Analyzing trace with hash 200610363, now seen corresponding path program 1 times [2022-10-17 10:52:28,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:52:28,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675901735] [2022-10-17 10:52:28,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:52:28,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:52:28,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:52:29,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:52:29,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675901735] [2022-10-17 10:52:29,048 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-10-17 10:52:29,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1170018921] [2022-10-17 10:52:29,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:52:29,049 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:52:29,049 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9036b10f-8758-4e3e-93cd-44f46c118ffe/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:52:29,051 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9036b10f-8758-4e3e-93cd-44f46c118ffe/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:52:29,055 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9036b10f-8758-4e3e-93cd-44f46c118ffe/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-10-17 10:52:29,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:52:29,873 INFO L263 TraceCheckSpWp]: Trace formula consists of 2859 conjuncts, 1 conjunts are in the unsatisfiable core [2022-10-17 10:52:29,885 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:52:29,924 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2022-10-17 10:52:29,924 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:52:29,925 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1170018921] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:52:29,925 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:52:29,925 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 10:52:29,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496494966] [2022-10-17 10:52:29,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:52:29,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-10-17 10:52:29,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:52:29,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-10-17 10:52:29,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-17 10:52:29,968 INFO L87 Difference]: Start difference. First operand has 361 states, 248 states have (on average 1.282258064516129) internal successors, (318), 245 states have internal predecessors, (318), 86 states have call successors, (86), 29 states have call predecessors, (86), 29 states have return successors, (86), 86 states have call predecessors, (86), 86 states have call successors, (86) Second operand has 2 states, 2 states have (on average 34.0) internal successors, (68), 2 states have internal predecessors, (68), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-10-17 10:52:30,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:52:30,052 INFO L93 Difference]: Finished difference Result 716 states and 1017 transitions. [2022-10-17 10:52:30,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-17 10:52:30,054 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 34.0) internal successors, (68), 2 states have internal predecessors, (68), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 136 [2022-10-17 10:52:30,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:52:30,069 INFO L225 Difference]: With dead ends: 716 [2022-10-17 10:52:30,069 INFO L226 Difference]: Without dead ends: 355 [2022-10-17 10:52:30,080 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-17 10:52:30,085 INFO L413 NwaCegarLoop]: 479 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, 479 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 [2022-10-17 10:52:30,086 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 479 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 10:52:30,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2022-10-17 10:52:30,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 355. [2022-10-17 10:52:30,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 355 states, 239 states have (on average 1.2677824267782427) internal successors, (303), 240 states have internal predecessors, (303), 86 states have call successors, (86), 29 states have call predecessors, (86), 29 states have return successors, (85), 85 states have call predecessors, (85), 85 states have call successors, (85) [2022-10-17 10:52:30,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 474 transitions. [2022-10-17 10:52:30,171 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 474 transitions. Word has length 136 [2022-10-17 10:52:30,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:52:30,172 INFO L495 AbstractCegarLoop]: Abstraction has 355 states and 474 transitions. [2022-10-17 10:52:30,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 34.0) internal successors, (68), 2 states have internal predecessors, (68), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-10-17 10:52:30,173 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 474 transitions. [2022-10-17 10:52:30,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-10-17 10:52:30,177 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:52:30,177 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:52:30,219 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9036b10f-8758-4e3e-93cd-44f46c118ffe/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-10-17 10:52:30,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9036b10f-8758-4e3e-93cd-44f46c118ffe/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-10-17 10:52:30,406 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:52:30,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:52:30,407 INFO L85 PathProgramCache]: Analyzing trace with hash 810580097, now seen corresponding path program 1 times [2022-10-17 10:52:30,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:52:30,407 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387482924] [2022-10-17 10:52:30,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:52:30,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:52:30,618 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-17 10:52:30,619 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1956978488] [2022-10-17 10:52:30,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:52:30,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:52:30,622 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9036b10f-8758-4e3e-93cd-44f46c118ffe/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:52:30,627 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9036b10f-8758-4e3e-93cd-44f46c118ffe/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:52:30,644 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9036b10f-8758-4e3e-93cd-44f46c118ffe/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-10-17 10:52:31,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:52:31,416 INFO L263 TraceCheckSpWp]: Trace formula consists of 2859 conjuncts, 6 conjunts are in the unsatisfiable core [2022-10-17 10:52:31,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:52:31,692 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2022-10-17 10:52:31,692 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:52:31,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:52:31,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387482924] [2022-10-17 10:52:31,693 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-17 10:52:31,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1956978488] [2022-10-17 10:52:31,694 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1956978488] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:52:31,694 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:52:31,694 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-17 10:52:31,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110560181] [2022-10-17 10:52:31,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:52:31,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-17 10:52:31,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:52:31,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-17 10:52:31,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-10-17 10:52:31,698 INFO L87 Difference]: Start difference. First operand 355 states and 474 transitions. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-10-17 10:52:32,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:52:32,222 INFO L93 Difference]: Finished difference Result 727 states and 982 transitions. [2022-10-17 10:52:32,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-17 10:52:32,223 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 136 [2022-10-17 10:52:32,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:52:32,230 INFO L225 Difference]: With dead ends: 727 [2022-10-17 10:52:32,231 INFO L226 Difference]: Without dead ends: 419 [2022-10-17 10:52:32,234 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-10-17 10:52:32,235 INFO L413 NwaCegarLoop]: 442 mSDtfsCounter, 704 mSDsluCounter, 1249 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 704 SdHoareTripleChecker+Valid, 1691 SdHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-10-17 10:52:32,236 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [704 Valid, 1691 Invalid, 241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-10-17 10:52:32,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2022-10-17 10:52:32,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 357. [2022-10-17 10:52:32,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 357 states, 241 states have (on average 1.2655601659751037) internal successors, (305), 242 states have internal predecessors, (305), 86 states have call successors, (86), 29 states have call predecessors, (86), 29 states have return successors, (85), 85 states have call predecessors, (85), 85 states have call successors, (85) [2022-10-17 10:52:32,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 476 transitions. [2022-10-17 10:52:32,283 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 476 transitions. Word has length 136 [2022-10-17 10:52:32,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:52:32,284 INFO L495 AbstractCegarLoop]: Abstraction has 357 states and 476 transitions. [2022-10-17 10:52:32,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-10-17 10:52:32,284 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 476 transitions. [2022-10-17 10:52:32,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-10-17 10:52:32,287 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:52:32,288 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:52:32,327 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9036b10f-8758-4e3e-93cd-44f46c118ffe/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-10-17 10:52:32,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9036b10f-8758-4e3e-93cd-44f46c118ffe/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:52:32,514 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:52:32,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:52:32,515 INFO L85 PathProgramCache]: Analyzing trace with hash 1233281923, now seen corresponding path program 1 times [2022-10-17 10:52:32,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:52:32,515 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757151123] [2022-10-17 10:52:32,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:52:32,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:52:32,649 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-17 10:52:32,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2103143808] [2022-10-17 10:52:32,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:52:32,649 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:52:32,650 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9036b10f-8758-4e3e-93cd-44f46c118ffe/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:52:32,654 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9036b10f-8758-4e3e-93cd-44f46c118ffe/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:52:32,660 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9036b10f-8758-4e3e-93cd-44f46c118ffe/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-10-17 10:52:33,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:52:33,432 INFO L263 TraceCheckSpWp]: Trace formula consists of 2852 conjuncts, 7 conjunts are in the unsatisfiable core [2022-10-17 10:52:33,438 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:52:33,466 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2022-10-17 10:52:33,466 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:52:33,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:52:33,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757151123] [2022-10-17 10:52:33,466 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-17 10:52:33,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2103143808] [2022-10-17 10:52:33,467 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2103143808] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:52:33,467 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:52:33,467 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-17 10:52:33,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199237874] [2022-10-17 10:52:33,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:52:33,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-17 10:52:33,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:52:33,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-17 10:52:33,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-17 10:52:33,470 INFO L87 Difference]: Start difference. First operand 357 states and 476 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2022-10-17 10:52:33,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:52:33,546 INFO L93 Difference]: Finished difference Result 710 states and 950 transitions. [2022-10-17 10:52:33,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-17 10:52:33,548 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) Word has length 136 [2022-10-17 10:52:33,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:52:33,554 INFO L225 Difference]: With dead ends: 710 [2022-10-17 10:52:33,555 INFO L226 Difference]: Without dead ends: 362 [2022-10-17 10:52:33,557 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-10-17 10:52:33,560 INFO L413 NwaCegarLoop]: 471 mSDtfsCounter, 2 mSDsluCounter, 1405 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1876 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 10:52:33,561 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1876 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 10:52:33,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2022-10-17 10:52:33,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 362. [2022-10-17 10:52:33,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 362 states, 245 states have (on average 1.2612244897959184) internal successors, (309), 246 states have internal predecessors, (309), 86 states have call successors, (86), 29 states have call predecessors, (86), 30 states have return successors, (89), 86 states have call predecessors, (89), 85 states have call successors, (89) [2022-10-17 10:52:33,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 484 transitions. [2022-10-17 10:52:33,617 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 484 transitions. Word has length 136 [2022-10-17 10:52:33,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:52:33,618 INFO L495 AbstractCegarLoop]: Abstraction has 362 states and 484 transitions. [2022-10-17 10:52:33,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2022-10-17 10:52:33,618 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 484 transitions. [2022-10-17 10:52:33,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-10-17 10:52:33,628 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:52:33,629 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:52:33,670 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9036b10f-8758-4e3e-93cd-44f46c118ffe/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-10-17 10:52:33,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9036b10f-8758-4e3e-93cd-44f46c118ffe/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:52:33,853 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:52:33,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:52:33,853 INFO L85 PathProgramCache]: Analyzing trace with hash 292227623, now seen corresponding path program 1 times [2022-10-17 10:52:33,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:52:33,854 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167609246] [2022-10-17 10:52:33,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:52:33,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:52:34,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:52:36,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-17 10:52:36,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:52:36,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-10-17 10:52:36,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:52:36,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-10-17 10:52:36,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:52:36,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-10-17 10:52:36,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:52:36,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-10-17 10:52:36,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:52:36,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:52:36,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:52:36,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:52:36,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:52:36,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-17 10:52:36,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:52:36,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-10-17 10:52:36,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:52:36,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-10-17 10:52:36,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:52:36,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:52:36,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:52:36,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-10-17 10:52:36,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:52:36,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-10-17 10:52:36,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:52:36,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-10-17 10:52:36,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:52:36,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-10-17 10:52:36,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:52:36,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-10-17 10:52:36,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:52:36,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-10-17 10:52:36,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:52:36,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-10-17 10:52:36,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:52:36,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-10-17 10:52:36,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:52:36,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-10-17 10:52:36,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:52:36,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-10-17 10:52:36,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:52:36,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-10-17 10:52:36,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:52:36,715 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2022-10-17 10:52:36,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:52:36,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167609246] [2022-10-17 10:52:36,716 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167609246] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:52:36,716 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:52:36,716 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-10-17 10:52:36,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542440060] [2022-10-17 10:52:36,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:52:36,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-10-17 10:52:36,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:52:36,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-10-17 10:52:36,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-10-17 10:52:36,720 INFO L87 Difference]: Start difference. First operand 362 states and 484 transitions. Second operand has 13 states, 13 states have (on average 5.230769230769231) internal successors, (68), 9 states have internal predecessors, (68), 4 states have call successors, (24), 5 states have call predecessors, (24), 3 states have return successors, (22), 4 states have call predecessors, (22), 4 states have call successors, (22) [2022-10-17 10:52:42,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:52:42,262 INFO L93 Difference]: Finished difference Result 761 states and 1022 transitions. [2022-10-17 10:52:42,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-10-17 10:52:42,263 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.230769230769231) internal successors, (68), 9 states have internal predecessors, (68), 4 states have call successors, (24), 5 states have call predecessors, (24), 3 states have return successors, (22), 4 states have call predecessors, (22), 4 states have call successors, (22) Word has length 142 [2022-10-17 10:52:42,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:52:42,266 INFO L225 Difference]: With dead ends: 761 [2022-10-17 10:52:42,266 INFO L226 Difference]: Without dead ends: 420 [2022-10-17 10:52:42,268 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=92, Invalid=328, Unknown=0, NotChecked=0, Total=420 [2022-10-17 10:52:42,269 INFO L413 NwaCegarLoop]: 420 mSDtfsCounter, 560 mSDsluCounter, 1658 mSDsCounter, 0 mSdLazyCounter, 2493 mSolverCounterSat, 369 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 627 SdHoareTripleChecker+Valid, 2078 SdHoareTripleChecker+Invalid, 2862 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 369 IncrementalHoareTripleChecker+Valid, 2493 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2022-10-17 10:52:42,269 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [627 Valid, 2078 Invalid, 2862 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [369 Valid, 2493 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2022-10-17 10:52:42,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 420 states. [2022-10-17 10:52:42,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 420 to 367. [2022-10-17 10:52:42,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 367 states, 249 states have (on average 1.2610441767068272) internal successors, (314), 251 states have internal predecessors, (314), 86 states have call successors, (86), 29 states have call predecessors, (86), 31 states have return successors, (90), 86 states have call predecessors, (90), 85 states have call successors, (90) [2022-10-17 10:52:42,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 490 transitions. [2022-10-17 10:52:42,306 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 490 transitions. Word has length 142 [2022-10-17 10:52:42,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:52:42,306 INFO L495 AbstractCegarLoop]: Abstraction has 367 states and 490 transitions. [2022-10-17 10:52:42,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.230769230769231) internal successors, (68), 9 states have internal predecessors, (68), 4 states have call successors, (24), 5 states have call predecessors, (24), 3 states have return successors, (22), 4 states have call predecessors, (22), 4 states have call successors, (22) [2022-10-17 10:52:42,307 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 490 transitions. [2022-10-17 10:52:42,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-10-17 10:52:42,309 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:52:42,309 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:52:42,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-17 10:52:42,310 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:52:42,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:52:42,310 INFO L85 PathProgramCache]: Analyzing trace with hash 319293225, now seen corresponding path program 1 times [2022-10-17 10:52:42,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:52:42,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203357145] [2022-10-17 10:52:42,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:52:42,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:52:42,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:52:42,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-17 10:52:42,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:52:42,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-10-17 10:52:42,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:52:42,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-10-17 10:52:42,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:52:42,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-10-17 10:52:42,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:52:43,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-10-17 10:52:43,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:52:43,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:52:43,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:52:43,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:52:43,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:52:43,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-17 10:52:43,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:52:43,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-10-17 10:52:43,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:52:43,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-10-17 10:52:43,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:52:43,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:52:43,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:52:43,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-10-17 10:52:43,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:52:43,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-10-17 10:52:43,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:52:43,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-10-17 10:52:43,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:52:43,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-10-17 10:52:43,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:52:43,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-10-17 10:52:43,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:52:43,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-10-17 10:52:43,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:52:43,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-10-17 10:52:43,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:52:43,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-10-17 10:52:43,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:52:43,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-10-17 10:52:43,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:52:43,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-10-17 10:52:43,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:52:43,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-10-17 10:52:43,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:52:43,389 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2022-10-17 10:52:43,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:52:43,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203357145] [2022-10-17 10:52:43,390 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203357145] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:52:43,390 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:52:43,390 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-10-17 10:52:43,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879031961] [2022-10-17 10:52:43,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:52:43,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-17 10:52:43,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:52:43,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-17 10:52:43,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-10-17 10:52:43,393 INFO L87 Difference]: Start difference. First operand 367 states and 490 transitions. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 5 states have internal predecessors, (68), 3 states have call successors, (24), 5 states have call predecessors, (24), 2 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2022-10-17 10:52:45,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:52:45,587 INFO L93 Difference]: Finished difference Result 768 states and 1030 transitions. [2022-10-17 10:52:45,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-17 10:52:45,588 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 5 states have internal predecessors, (68), 3 states have call successors, (24), 5 states have call predecessors, (24), 2 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) Word has length 142 [2022-10-17 10:52:45,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:52:45,591 INFO L225 Difference]: With dead ends: 768 [2022-10-17 10:52:45,592 INFO L226 Difference]: Without dead ends: 415 [2022-10-17 10:52:45,593 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2022-10-17 10:52:45,594 INFO L413 NwaCegarLoop]: 431 mSDtfsCounter, 525 mSDsluCounter, 618 mSDsCounter, 0 mSdLazyCounter, 852 mSolverCounterSat, 357 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 594 SdHoareTripleChecker+Valid, 1049 SdHoareTripleChecker+Invalid, 1209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 357 IncrementalHoareTripleChecker+Valid, 852 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-10-17 10:52:45,594 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [594 Valid, 1049 Invalid, 1209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [357 Valid, 852 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-10-17 10:52:45,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2022-10-17 10:52:45,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 365. [2022-10-17 10:52:45,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 365 states, 247 states have (on average 1.2550607287449393) internal successors, (310), 249 states have internal predecessors, (310), 86 states have call successors, (86), 29 states have call predecessors, (86), 31 states have return successors, (90), 86 states have call predecessors, (90), 85 states have call successors, (90) [2022-10-17 10:52:45,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 486 transitions. [2022-10-17 10:52:45,628 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 486 transitions. Word has length 142 [2022-10-17 10:52:45,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:52:45,629 INFO L495 AbstractCegarLoop]: Abstraction has 365 states and 486 transitions. [2022-10-17 10:52:45,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 5 states have internal predecessors, (68), 3 states have call successors, (24), 5 states have call predecessors, (24), 2 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2022-10-17 10:52:45,629 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 486 transitions. [2022-10-17 10:52:45,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-10-17 10:52:45,631 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:52:45,631 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:52:45,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-10-17 10:52:45,632 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:52:45,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:52:45,633 INFO L85 PathProgramCache]: Analyzing trace with hash 1626460037, now seen corresponding path program 1 times [2022-10-17 10:52:45,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:52:45,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097420012] [2022-10-17 10:52:45,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:52:45,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:52:45,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:52:46,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-17 10:52:46,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:52:46,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-10-17 10:52:46,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:52:46,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-10-17 10:52:46,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:52:46,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-10-17 10:52:46,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:52:46,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-10-17 10:52:46,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:52:46,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:52:46,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:52:46,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:52:46,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:52:46,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-17 10:52:46,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:52:46,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-10-17 10:52:46,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:52:46,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-10-17 10:52:46,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:52:46,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:52:46,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:52:46,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-10-17 10:52:46,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:52:46,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-10-17 10:52:46,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:52:47,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-10-17 10:52:47,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:52:47,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-10-17 10:52:47,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:52:47,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-10-17 10:52:47,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:52:47,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-10-17 10:52:47,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:52:47,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-10-17 10:52:47,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:52:47,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-10-17 10:52:47,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:52:47,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-10-17 10:52:47,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:52:47,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-10-17 10:52:47,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:52:47,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-10-17 10:52:47,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:52:47,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-10-17 10:52:47,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:52:47,111 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2022-10-17 10:52:47,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:52:47,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097420012] [2022-10-17 10:52:47,111 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097420012] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 10:52:47,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [273859689] [2022-10-17 10:52:47,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:52:47,112 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:52:47,112 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9036b10f-8758-4e3e-93cd-44f46c118ffe/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:52:47,114 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9036b10f-8758-4e3e-93cd-44f46c118ffe/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:52:47,125 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9036b10f-8758-4e3e-93cd-44f46c118ffe/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-10-17 10:52:47,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:52:47,973 INFO L263 TraceCheckSpWp]: Trace formula consists of 2880 conjuncts, 23 conjunts are in the unsatisfiable core [2022-10-17 10:52:47,979 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:52:49,364 WARN L855 $PredicateComparison]: unable to prove that (or (exists ((aws_hash_table_is_valid_~map.base Int) (aws_hash_table_is_valid_~map.offset Int)) (not (= 0 (select (select |c_#memory_$Pointer$.offset| aws_hash_table_is_valid_~map.base) aws_hash_table_is_valid_~map.offset)))) (exists ((aws_hash_table_is_valid_~map.base Int) (aws_hash_table_is_valid_~map.offset Int)) (not (= (select (select |c_#memory_$Pointer$.base| aws_hash_table_is_valid_~map.base) aws_hash_table_is_valid_~map.offset) 0)))) is different from true