./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_array_list_ensure_capacity_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eef7acd8-2fe6-4b7b-9c2a-2780b0ed5e21/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eef7acd8-2fe6-4b7b-9c2a-2780b0ed5e21/bin/uautomizer-DQz5hQGWxF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eef7acd8-2fe6-4b7b-9c2a-2780b0ed5e21/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eef7acd8-2fe6-4b7b-9c2a-2780b0ed5e21/bin/uautomizer-DQz5hQGWxF/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_array_list_ensure_capacity_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eef7acd8-2fe6-4b7b-9c2a-2780b0ed5e21/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eef7acd8-2fe6-4b7b-9c2a-2780b0ed5e21/bin/uautomizer-DQz5hQGWxF --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 c12ad62b7b197015493bfb3c1dd9a5de2922d9b16e39f249961c276d8b82591b --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 07:30:53,030 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 07:30:53,032 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 07:30:53,065 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 07:30:53,066 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 07:30:53,067 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 07:30:53,069 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 07:30:53,071 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 07:30:53,074 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 07:30:53,075 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 07:30:53,076 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 07:30:53,078 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 07:30:53,078 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 07:30:53,079 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 07:30:53,081 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 07:30:53,084 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 07:30:53,090 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 07:30:53,094 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 07:30:53,097 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 07:30:53,103 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 07:30:53,111 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 07:30:53,113 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 07:30:53,114 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 07:30:53,120 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 07:30:53,124 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 07:30:53,125 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 07:30:53,129 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 07:30:53,131 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 07:30:53,131 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 07:30:53,132 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 07:30:53,133 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 07:30:53,134 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 07:30:53,137 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 07:30:53,138 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 07:30:53,140 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 07:30:53,141 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 07:30:53,142 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 07:30:53,143 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 07:30:53,143 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 07:30:53,144 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 07:30:53,145 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 07:30:53,146 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eef7acd8-2fe6-4b7b-9c2a-2780b0ed5e21/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-20 07:30:53,191 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 07:30:53,191 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 07:30:53,192 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 07:30:53,192 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 07:30:53,199 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 07:30:53,199 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 07:30:53,200 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 07:30:53,200 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 07:30:53,201 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 07:30:53,201 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 07:30:53,202 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 07:30:53,202 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 07:30:53,203 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 07:30:53,203 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 07:30:53,203 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 07:30:53,203 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 07:30:53,203 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 07:30:53,204 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 07:30:53,204 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 07:30:53,204 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 07:30:53,204 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 07:30:53,205 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 07:30:53,205 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 07:30:53,205 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 07:30:53,206 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 07:30:53,206 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-20 07:30:53,206 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 07:30:53,206 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-20 07:30:53,206 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-20 07:30:53,208 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 07:30:53,208 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 07:30:53,209 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_eef7acd8-2fe6-4b7b-9c2a-2780b0ed5e21/bin/uautomizer-DQz5hQGWxF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eef7acd8-2fe6-4b7b-9c2a-2780b0ed5e21/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c12ad62b7b197015493bfb3c1dd9a5de2922d9b16e39f249961c276d8b82591b [2021-11-20 07:30:53,472 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 07:30:53,503 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 07:30:53,506 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 07:30:53,507 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 07:30:53,508 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 07:30:53,510 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eef7acd8-2fe6-4b7b-9c2a-2780b0ed5e21/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/aws-c-common/aws_array_list_ensure_capacity_harness.i [2021-11-20 07:30:53,584 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eef7acd8-2fe6-4b7b-9c2a-2780b0ed5e21/bin/uautomizer-DQz5hQGWxF/data/e70d9b33b/d56eb50caa984f52bb91df85d6be381e/FLAGc2dc7fbaf [2021-11-20 07:30:54,392 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 07:30:54,392 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eef7acd8-2fe6-4b7b-9c2a-2780b0ed5e21/sv-benchmarks/c/aws-c-common/aws_array_list_ensure_capacity_harness.i [2021-11-20 07:30:54,453 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eef7acd8-2fe6-4b7b-9c2a-2780b0ed5e21/bin/uautomizer-DQz5hQGWxF/data/e70d9b33b/d56eb50caa984f52bb91df85d6be381e/FLAGc2dc7fbaf [2021-11-20 07:30:54,884 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eef7acd8-2fe6-4b7b-9c2a-2780b0ed5e21/bin/uautomizer-DQz5hQGWxF/data/e70d9b33b/d56eb50caa984f52bb91df85d6be381e [2021-11-20 07:30:54,897 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 07:30:54,898 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 07:30:54,899 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 07:30:54,899 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 07:30:54,902 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 07:30:54,903 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:30:54" (1/1) ... [2021-11-20 07:30:54,904 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a53a501 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:30:54, skipping insertion in model container [2021-11-20 07:30:54,904 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:30:54" (1/1) ... [2021-11-20 07:30:54,912 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 07:30:55,026 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 07:30:55,352 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_eef7acd8-2fe6-4b7b-9c2a-2780b0ed5e21/sv-benchmarks/c/aws-c-common/aws_array_list_ensure_capacity_harness.i[4504,4517] [2021-11-20 07:30:55,360 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_eef7acd8-2fe6-4b7b-9c2a-2780b0ed5e21/sv-benchmarks/c/aws-c-common/aws_array_list_ensure_capacity_harness.i[4564,4577] [2021-11-20 07:30:56,306 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-20 07:30:56,385 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 07:30:56,386 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 07:30:56,387 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 07:30:56,388 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 07:30:56,389 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 07:30:56,406 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 07:30:56,407 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 07:30:56,409 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 07:30:56,410 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 07:30:56,412 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 07:30:56,413 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 07:30:56,414 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 07:30:56,414 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 07:30:56,785 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-20 07:30:56,787 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-20 07:30:56,788 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-20 07:30:56,789 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-20 07:30:56,791 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-20 07:30:56,791 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-20 07:30:56,792 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-20 07:30:56,793 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-20 07:30:56,794 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-20 07:30:56,795 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-20 07:30:56,940 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 07:30:56,940 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 07:30:56,959 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 07:30:56,966 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 07:30:57,047 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 07:30:57,051 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 07:30:57,078 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 07:30:57,092 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_eef7acd8-2fe6-4b7b-9c2a-2780b0ed5e21/sv-benchmarks/c/aws-c-common/aws_array_list_ensure_capacity_harness.i[4504,4517] [2021-11-20 07:30:57,093 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_eef7acd8-2fe6-4b7b-9c2a-2780b0ed5e21/sv-benchmarks/c/aws-c-common/aws_array_list_ensure_capacity_harness.i[4564,4577] [2021-11-20 07:30:57,150 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-20 07:30:57,181 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 07:30:57,181 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 07:30:57,182 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 07:30:57,182 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 07:30:57,183 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 07:30:57,195 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 07:30:57,199 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 07:30:57,201 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 07:30:57,202 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 07:30:57,204 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 07:30:57,205 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 07:30:57,206 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 07:30:57,208 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 07:30:57,250 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-20 07:30:57,251 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-20 07:30:57,252 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-20 07:30:57,253 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-20 07:30:57,258 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-20 07:30:57,259 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-20 07:30:57,259 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-20 07:30:57,260 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-20 07:30:57,260 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-20 07:30:57,261 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-20 07:30:57,303 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 07:30:57,304 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 07:30:57,305 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 07:30:57,310 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 07:30:57,334 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 07:30:57,338 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 07:30:57,651 INFO L208 MainTranslator]: Completed translation [2021-11-20 07:30:57,652 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:30:57 WrapperNode [2021-11-20 07:30:57,652 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 07:30:57,653 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 07:30:57,653 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 07:30:57,653 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 07:30:57,661 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:30:57" (1/1) ... [2021-11-20 07:30:57,779 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:30:57" (1/1) ... [2021-11-20 07:30:57,896 INFO L137 Inliner]: procedures = 691, calls = 1684, calls flagged for inlining = 52, calls inlined = 11, statements flattened = 804 [2021-11-20 07:30:57,897 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 07:30:57,897 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 07:30:57,898 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 07:30:57,898 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 07:30:57,907 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:30:57" (1/1) ... [2021-11-20 07:30:57,907 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:30:57" (1/1) ... [2021-11-20 07:30:57,916 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:30:57" (1/1) ... [2021-11-20 07:30:57,917 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:30:57" (1/1) ... [2021-11-20 07:30:57,958 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:30:57" (1/1) ... [2021-11-20 07:30:57,962 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:30:57" (1/1) ... [2021-11-20 07:30:57,972 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:30:57" (1/1) ... [2021-11-20 07:30:57,987 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 07:30:57,988 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 07:30:57,988 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 07:30:57,988 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 07:30:58,002 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:30:57" (1/1) ... [2021-11-20 07:30:58,010 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 07:30:58,021 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eef7acd8-2fe6-4b7b-9c2a-2780b0ed5e21/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:30:58,032 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eef7acd8-2fe6-4b7b-9c2a-2780b0ed5e21/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 07:30:58,035 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eef7acd8-2fe6-4b7b-9c2a-2780b0ed5e21/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 07:30:58,072 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-20 07:30:58,072 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2021-11-20 07:30:58,072 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2021-11-20 07:30:58,072 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2021-11-20 07:30:58,073 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2021-11-20 07:30:58,073 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-11-20 07:30:58,073 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-11-20 07:30:58,073 INFO L130 BoogieDeclarations]: Found specification of procedure aws_allocator_is_valid [2021-11-20 07:30:58,073 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_allocator_is_valid [2021-11-20 07:30:58,073 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-20 07:30:58,074 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2021-11-20 07:30:58,074 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2021-11-20 07:30:58,074 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-20 07:30:58,074 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-20 07:30:58,074 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-20 07:30:58,075 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 07:30:58,075 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-20 07:30:58,075 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2021-11-20 07:30:58,075 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2021-11-20 07:30:58,075 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 07:30:58,075 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 07:30:58,076 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-11-20 07:30:58,076 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-11-20 07:30:58,076 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2021-11-20 07:30:58,076 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2021-11-20 07:30:58,076 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2021-11-20 07:30:58,077 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2021-11-20 07:30:58,077 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2021-11-20 07:30:58,077 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2021-11-20 07:30:58,077 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_release [2021-11-20 07:30:58,077 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_release [2021-11-20 07:30:58,077 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-20 07:30:58,078 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-20 07:30:58,078 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2021-11-20 07:30:58,078 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2021-11-20 07:30:58,078 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_acquire [2021-11-20 07:30:58,078 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_acquire [2021-11-20 07:30:58,079 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-20 07:30:58,079 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2021-11-20 07:30:58,079 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2021-11-20 07:30:58,079 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-20 07:30:58,079 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-20 07:30:58,079 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2021-11-20 07:30:58,080 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2021-11-20 07:30:58,080 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2021-11-20 07:30:58,080 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2021-11-20 07:30:58,080 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2021-11-20 07:30:58,080 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2021-11-20 07:30:58,081 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_ensure_capacity [2021-11-20 07:30:58,081 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_ensure_capacity [2021-11-20 07:30:58,081 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-20 07:30:58,081 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2021-11-20 07:30:58,081 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2021-11-20 07:30:58,081 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-20 07:30:58,457 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 07:30:58,467 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 07:30:59,571 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 07:30:59,584 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 07:30:59,585 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-20 07:30:59,595 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:30:59 BoogieIcfgContainer [2021-11-20 07:30:59,595 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 07:30:59,597 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 07:30:59,597 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 07:30:59,601 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 07:30:59,602 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 07:30:54" (1/3) ... [2021-11-20 07:30:59,603 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63ff6baf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 07:30:59, skipping insertion in model container [2021-11-20 07:30:59,603 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:30:57" (2/3) ... [2021-11-20 07:30:59,603 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63ff6baf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 07:30:59, skipping insertion in model container [2021-11-20 07:30:59,609 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:30:59" (3/3) ... [2021-11-20 07:30:59,611 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_array_list_ensure_capacity_harness.i [2021-11-20 07:30:59,616 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 07:30:59,616 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-20 07:30:59,669 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 07:30:59,686 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-20 07:30:59,686 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-20 07:30:59,730 INFO L276 IsEmpty]: Start isEmpty. Operand has 241 states, 145 states have (on average 1.206896551724138) internal successors, (175), 146 states have internal predecessors, (175), 73 states have call successors, (73), 21 states have call predecessors, (73), 21 states have return successors, (73), 73 states have call predecessors, (73), 73 states have call successors, (73) [2021-11-20 07:30:59,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-20 07:30:59,743 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:30:59,744 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:30:59,745 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:30:59,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:30:59,750 INFO L85 PathProgramCache]: Analyzing trace with hash -1087274047, now seen corresponding path program 1 times [2021-11-20 07:30:59,759 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:30:59,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043767165] [2021-11-20 07:30:59,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:30:59,761 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:31:00,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:31:00,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 07:31:00,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:31:00,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:31:00,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:31:00,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-20 07:31:00,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:31:00,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-20 07:31:00,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:31:00,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-20 07:31:00,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:31:00,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-11-20 07:31:00,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:31:00,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-20 07:31:00,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:31:00,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-11-20 07:31:00,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:31:00,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-11-20 07:31:00,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:31:00,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-11-20 07:31:00,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:31:00,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-11-20 07:31:00,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:31:00,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-20 07:31:00,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:31:00,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:31:00,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:31:00,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-11-20 07:31:00,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:31:00,622 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-11-20 07:31:00,623 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:31:00,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043767165] [2021-11-20 07:31:00,624 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043767165] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:31:00,624 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:31:00,624 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 07:31:00,626 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912289941] [2021-11-20 07:31:00,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:31:00,631 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 07:31:00,631 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:31:00,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 07:31:00,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-20 07:31:00,678 INFO L87 Difference]: Start difference. First operand has 241 states, 145 states have (on average 1.206896551724138) internal successors, (175), 146 states have internal predecessors, (175), 73 states have call successors, (73), 21 states have call predecessors, (73), 21 states have return successors, (73), 73 states have call predecessors, (73), 73 states have call successors, (73) Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (16), 5 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-20 07:31:01,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:31:01,601 INFO L93 Difference]: Finished difference Result 502 states and 720 transitions. [2021-11-20 07:31:01,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 07:31:01,604 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (16), 5 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 87 [2021-11-20 07:31:01,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:31:01,619 INFO L225 Difference]: With dead ends: 502 [2021-11-20 07:31:01,637 INFO L226 Difference]: Without dead ends: 257 [2021-11-20 07:31:01,645 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-20 07:31:01,649 INFO L933 BasicCegarLoop]: 288 mSDtfsCounter, 78 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 442 SdHoareTripleChecker+Invalid, 331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-20 07:31:01,660 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [94 Valid, 442 Invalid, 331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 248 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-20 07:31:01,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2021-11-20 07:31:01,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 230. [2021-11-20 07:31:01,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 136 states have (on average 1.1838235294117647) internal successors, (161), 138 states have internal predecessors, (161), 73 states have call successors, (73), 21 states have call predecessors, (73), 20 states have return successors, (70), 70 states have call predecessors, (70), 70 states have call successors, (70) [2021-11-20 07:31:01,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 304 transitions. [2021-11-20 07:31:01,760 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 304 transitions. Word has length 87 [2021-11-20 07:31:01,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:31:01,760 INFO L470 AbstractCegarLoop]: Abstraction has 230 states and 304 transitions. [2021-11-20 07:31:01,760 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (16), 5 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-20 07:31:01,761 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 304 transitions. [2021-11-20 07:31:01,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-20 07:31:01,766 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:31:01,766 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:31:01,767 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-20 07:31:01,767 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:31:01,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:31:01,768 INFO L85 PathProgramCache]: Analyzing trace with hash 672902535, now seen corresponding path program 1 times [2021-11-20 07:31:01,768 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:31:01,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635357894] [2021-11-20 07:31:01,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:31:01,768 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:31:01,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:31:02,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 07:31:02,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:31:02,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:31:02,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:31:02,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-20 07:31:02,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:31:02,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-20 07:31:02,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:31:02,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-20 07:31:02,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:31:02,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-11-20 07:31:02,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:31:02,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-20 07:31:02,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:31:02,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-11-20 07:31:02,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:31:02,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-11-20 07:31:02,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:31:02,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-11-20 07:31:02,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:31:02,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-11-20 07:31:02,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:31:02,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-20 07:31:02,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:31:02,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:31:02,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:31:02,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-11-20 07:31:02,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:31:02,311 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-20 07:31:02,312 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:31:02,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635357894] [2021-11-20 07:31:02,312 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635357894] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 07:31:02,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [684598984] [2021-11-20 07:31:02,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:31:02,313 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:31:02,313 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eef7acd8-2fe6-4b7b-9c2a-2780b0ed5e21/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:31:02,318 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eef7acd8-2fe6-4b7b-9c2a-2780b0ed5e21/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:31:02,325 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eef7acd8-2fe6-4b7b-9c2a-2780b0ed5e21/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-20 07:31:02,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:31:02,788 INFO L263 TraceCheckSpWp]: Trace formula consists of 2193 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-20 07:31:02,798 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:31:03,077 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-11-20 07:31:03,078 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 07:31:03,079 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [684598984] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:31:03,079 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 07:31:03,080 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2021-11-20 07:31:03,080 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176988466] [2021-11-20 07:31:03,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:31:03,082 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 07:31:03,082 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:31:03,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 07:31:03,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-11-20 07:31:03,085 INFO L87 Difference]: Start difference. First operand 230 states and 304 transitions. Second operand has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-11-20 07:31:03,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:31:03,384 INFO L93 Difference]: Finished difference Result 436 states and 585 transitions. [2021-11-20 07:31:03,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 07:31:03,385 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 87 [2021-11-20 07:31:03,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:31:03,398 INFO L225 Difference]: With dead ends: 436 [2021-11-20 07:31:03,399 INFO L226 Difference]: Without dead ends: 232 [2021-11-20 07:31:03,404 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2021-11-20 07:31:03,406 INFO L933 BasicCegarLoop]: 257 mSDtfsCounter, 306 mSDsluCounter, 724 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 326 SdHoareTripleChecker+Valid, 981 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 07:31:03,410 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [326 Valid, 981 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 07:31:03,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2021-11-20 07:31:03,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 232. [2021-11-20 07:31:03,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 137 states have (on average 1.1824817518248176) internal successors, (162), 140 states have internal predecessors, (162), 73 states have call successors, (73), 21 states have call predecessors, (73), 21 states have return successors, (80), 70 states have call predecessors, (80), 70 states have call successors, (80) [2021-11-20 07:31:03,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 315 transitions. [2021-11-20 07:31:03,462 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 315 transitions. Word has length 87 [2021-11-20 07:31:03,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:31:03,463 INFO L470 AbstractCegarLoop]: Abstraction has 232 states and 315 transitions. [2021-11-20 07:31:03,463 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-11-20 07:31:03,463 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 315 transitions. [2021-11-20 07:31:03,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-11-20 07:31:03,476 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:31:03,476 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:31:03,516 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eef7acd8-2fe6-4b7b-9c2a-2780b0ed5e21/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-20 07:31:03,689 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eef7acd8-2fe6-4b7b-9c2a-2780b0ed5e21/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:31:03,690 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:31:03,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:31:03,690 INFO L85 PathProgramCache]: Analyzing trace with hash -149436210, now seen corresponding path program 1 times [2021-11-20 07:31:03,690 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:31:03,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224051140] [2021-11-20 07:31:03,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:31:03,691 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:31:03,748 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 07:31:03,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1272907793] [2021-11-20 07:31:03,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:31:03,748 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:31:03,748 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eef7acd8-2fe6-4b7b-9c2a-2780b0ed5e21/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:31:03,749 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eef7acd8-2fe6-4b7b-9c2a-2780b0ed5e21/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:31:03,769 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eef7acd8-2fe6-4b7b-9c2a-2780b0ed5e21/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-20 07:31:04,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:31:04,205 INFO L263 TraceCheckSpWp]: Trace formula consists of 2307 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 07:31:04,212 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:31:04,418 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-11-20 07:31:04,418 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 07:31:04,418 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:31:04,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224051140] [2021-11-20 07:31:04,419 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 07:31:04,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1272907793] [2021-11-20 07:31:04,419 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1272907793] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:31:04,419 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:31:04,419 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 07:31:04,419 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903118333] [2021-11-20 07:31:04,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:31:04,420 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 07:31:04,420 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:31:04,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 07:31:04,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 07:31:04,421 INFO L87 Difference]: Start difference. First operand 232 states and 315 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-11-20 07:31:04,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:31:04,480 INFO L93 Difference]: Finished difference Result 443 states and 614 transitions. [2021-11-20 07:31:04,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 07:31:04,481 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 102 [2021-11-20 07:31:04,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:31:04,488 INFO L225 Difference]: With dead ends: 443 [2021-11-20 07:31:04,489 INFO L226 Difference]: Without dead ends: 237 [2021-11-20 07:31:04,490 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-20 07:31:04,493 INFO L933 BasicCegarLoop]: 303 mSDtfsCounter, 10 mSDsluCounter, 596 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 899 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 07:31:04,494 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 899 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 07:31:04,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2021-11-20 07:31:04,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 234. [2021-11-20 07:31:04,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 139 states have (on average 1.1798561151079137) internal successors, (164), 142 states have internal predecessors, (164), 73 states have call successors, (73), 21 states have call predecessors, (73), 21 states have return successors, (80), 70 states have call predecessors, (80), 70 states have call successors, (80) [2021-11-20 07:31:04,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 317 transitions. [2021-11-20 07:31:04,541 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 317 transitions. Word has length 102 [2021-11-20 07:31:04,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:31:04,542 INFO L470 AbstractCegarLoop]: Abstraction has 234 states and 317 transitions. [2021-11-20 07:31:04,542 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-11-20 07:31:04,542 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 317 transitions. [2021-11-20 07:31:04,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-11-20 07:31:04,549 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:31:04,550 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:31:04,593 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eef7acd8-2fe6-4b7b-9c2a-2780b0ed5e21/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-20 07:31:04,766 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eef7acd8-2fe6-4b7b-9c2a-2780b0ed5e21/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:31:04,766 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:31:04,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:31:04,767 INFO L85 PathProgramCache]: Analyzing trace with hash -710135988, now seen corresponding path program 1 times [2021-11-20 07:31:04,767 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:31:04,767 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86747687] [2021-11-20 07:31:04,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:31:04,767 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:31:04,845 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 07:31:04,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [969016119] [2021-11-20 07:31:04,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:31:04,846 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:31:04,846 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eef7acd8-2fe6-4b7b-9c2a-2780b0ed5e21/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:31:04,847 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eef7acd8-2fe6-4b7b-9c2a-2780b0ed5e21/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:31:04,854 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eef7acd8-2fe6-4b7b-9c2a-2780b0ed5e21/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-20 07:31:05,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:31:05,289 INFO L263 TraceCheckSpWp]: Trace formula consists of 2312 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-20 07:31:05,297 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:31:05,554 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-20 07:31:05,555 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 07:31:05,555 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:31:05,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86747687] [2021-11-20 07:31:05,555 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 07:31:05,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [969016119] [2021-11-20 07:31:05,556 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [969016119] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:31:05,556 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:31:05,556 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-20 07:31:05,556 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562287444] [2021-11-20 07:31:05,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:31:05,557 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-20 07:31:05,557 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:31:05,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-20 07:31:05,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-20 07:31:05,558 INFO L87 Difference]: Start difference. First operand 234 states and 317 transitions. Second operand has 8 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 4 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) [2021-11-20 07:31:06,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:31:06,050 INFO L93 Difference]: Finished difference Result 432 states and 583 transitions. [2021-11-20 07:31:06,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-20 07:31:06,050 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 4 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) Word has length 102 [2021-11-20 07:31:06,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:31:06,053 INFO L225 Difference]: With dead ends: 432 [2021-11-20 07:31:06,053 INFO L226 Difference]: Without dead ends: 234 [2021-11-20 07:31:06,054 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2021-11-20 07:31:06,055 INFO L933 BasicCegarLoop]: 230 mSDtfsCounter, 354 mSDsluCounter, 1046 mSDsCounter, 0 mSdLazyCounter, 358 mSolverCounterSat, 144 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 354 SdHoareTripleChecker+Valid, 1276 SdHoareTripleChecker+Invalid, 502 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Valid, 358 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-20 07:31:06,056 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [354 Valid, 1276 Invalid, 502 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [144 Valid, 358 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-20 07:31:06,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2021-11-20 07:31:06,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 234. [2021-11-20 07:31:06,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 139 states have (on average 1.1798561151079137) internal successors, (164), 142 states have internal predecessors, (164), 73 states have call successors, (73), 21 states have call predecessors, (73), 21 states have return successors, (74), 70 states have call predecessors, (74), 70 states have call successors, (74) [2021-11-20 07:31:06,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 311 transitions. [2021-11-20 07:31:06,076 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 311 transitions. Word has length 102 [2021-11-20 07:31:06,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:31:06,077 INFO L470 AbstractCegarLoop]: Abstraction has 234 states and 311 transitions. [2021-11-20 07:31:06,077 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 4 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) [2021-11-20 07:31:06,078 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 311 transitions. [2021-11-20 07:31:06,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-11-20 07:31:06,079 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:31:06,080 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-20 07:31:06,117 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eef7acd8-2fe6-4b7b-9c2a-2780b0ed5e21/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-20 07:31:06,297 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eef7acd8-2fe6-4b7b-9c2a-2780b0ed5e21/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2021-11-20 07:31:06,298 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:31:06,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:31:06,298 INFO L85 PathProgramCache]: Analyzing trace with hash 191134547, now seen corresponding path program 2 times [2021-11-20 07:31:06,298 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:31:06,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541839175] [2021-11-20 07:31:06,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:31:06,299 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:31:06,375 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 07:31:06,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2027472447] [2021-11-20 07:31:06,376 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-20 07:31:06,376 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:31:06,376 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eef7acd8-2fe6-4b7b-9c2a-2780b0ed5e21/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:31:06,377 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eef7acd8-2fe6-4b7b-9c2a-2780b0ed5e21/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:31:06,397 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eef7acd8-2fe6-4b7b-9c2a-2780b0ed5e21/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-20 07:31:06,759 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-20 07:31:06,759 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 07:31:06,766 INFO L263 TraceCheckSpWp]: Trace formula consists of 1894 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-20 07:31:06,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:31:07,025 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2021-11-20 07:31:07,025 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 07:31:07,025 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:31:07,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541839175] [2021-11-20 07:31:07,025 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 07:31:07,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2027472447] [2021-11-20 07:31:07,026 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2027472447] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:31:07,026 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:31:07,026 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 07:31:07,026 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368583844] [2021-11-20 07:31:07,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:31:07,028 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 07:31:07,028 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:31:07,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 07:31:07,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 07:31:07,029 INFO L87 Difference]: Start difference. First operand 234 states and 311 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2021-11-20 07:31:07,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:31:07,071 INFO L93 Difference]: Finished difference Result 409 states and 535 transitions. [2021-11-20 07:31:07,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 07:31:07,071 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) Word has length 117 [2021-11-20 07:31:07,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:31:07,076 INFO L225 Difference]: With dead ends: 409 [2021-11-20 07:31:07,077 INFO L226 Difference]: Without dead ends: 239 [2021-11-20 07:31:07,078 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-20 07:31:07,079 INFO L933 BasicCegarLoop]: 301 mSDtfsCounter, 2 mSDsluCounter, 898 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1199 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 07:31:07,080 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 1199 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 07:31:07,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2021-11-20 07:31:07,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 239. [2021-11-20 07:31:07,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 143 states have (on average 1.1748251748251748) internal successors, (168), 146 states have internal predecessors, (168), 73 states have call successors, (73), 21 states have call predecessors, (73), 22 states have return successors, (75), 71 states have call predecessors, (75), 70 states have call successors, (75) [2021-11-20 07:31:07,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 316 transitions. [2021-11-20 07:31:07,103 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 316 transitions. Word has length 117 [2021-11-20 07:31:07,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:31:07,104 INFO L470 AbstractCegarLoop]: Abstraction has 239 states and 316 transitions. [2021-11-20 07:31:07,104 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2021-11-20 07:31:07,104 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 316 transitions. [2021-11-20 07:31:07,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-11-20 07:31:07,106 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:31:07,106 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-20 07:31:07,146 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eef7acd8-2fe6-4b7b-9c2a-2780b0ed5e21/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-20 07:31:07,320 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eef7acd8-2fe6-4b7b-9c2a-2780b0ed5e21/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:31:07,321 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:31:07,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:31:07,321 INFO L85 PathProgramCache]: Analyzing trace with hash 389087133, now seen corresponding path program 1 times [2021-11-20 07:31:07,321 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:31:07,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675755037] [2021-11-20 07:31:07,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:31:07,322 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:31:07,372 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 07:31:07,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [5972913] [2021-11-20 07:31:07,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:31:07,373 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:31:07,373 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eef7acd8-2fe6-4b7b-9c2a-2780b0ed5e21/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:31:07,373 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eef7acd8-2fe6-4b7b-9c2a-2780b0ed5e21/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:31:07,389 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eef7acd8-2fe6-4b7b-9c2a-2780b0ed5e21/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-20 07:31:07,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:31:07,857 INFO L263 TraceCheckSpWp]: Trace formula consists of 2447 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-20 07:31:07,861 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:31:08,159 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-11-20 07:31:08,159 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 07:31:08,159 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:31:08,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675755037] [2021-11-20 07:31:08,160 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 07:31:08,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [5972913] [2021-11-20 07:31:08,160 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [5972913] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:31:08,160 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:31:08,160 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-20 07:31:08,160 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650196048] [2021-11-20 07:31:08,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:31:08,161 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-20 07:31:08,161 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:31:08,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-20 07:31:08,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-20 07:31:08,162 INFO L87 Difference]: Start difference. First operand 239 states and 316 transitions. Second operand has 9 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 5 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 4 states have call predecessors, (17), 5 states have call successors, (17) [2021-11-20 07:31:08,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:31:08,683 INFO L93 Difference]: Finished difference Result 439 states and 576 transitions. [2021-11-20 07:31:08,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-20 07:31:08,684 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 5 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 4 states have call predecessors, (17), 5 states have call successors, (17) Word has length 123 [2021-11-20 07:31:08,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:31:08,686 INFO L225 Difference]: With dead ends: 439 [2021-11-20 07:31:08,686 INFO L226 Difference]: Without dead ends: 237 [2021-11-20 07:31:08,688 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2021-11-20 07:31:08,688 INFO L933 BasicCegarLoop]: 229 mSDtfsCounter, 392 mSDsluCounter, 1245 mSDsCounter, 0 mSdLazyCounter, 400 mSolverCounterSat, 153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 392 SdHoareTripleChecker+Valid, 1474 SdHoareTripleChecker+Invalid, 553 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 153 IncrementalHoareTripleChecker+Valid, 400 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-20 07:31:08,689 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [392 Valid, 1474 Invalid, 553 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [153 Valid, 400 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-20 07:31:08,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2021-11-20 07:31:08,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 237. [2021-11-20 07:31:08,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 142 states have (on average 1.1690140845070423) internal successors, (166), 144 states have internal predecessors, (166), 73 states have call successors, (73), 21 states have call predecessors, (73), 21 states have return successors, (71), 71 states have call predecessors, (71), 70 states have call successors, (71) [2021-11-20 07:31:08,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 310 transitions. [2021-11-20 07:31:08,707 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 310 transitions. Word has length 123 [2021-11-20 07:31:08,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:31:08,707 INFO L470 AbstractCegarLoop]: Abstraction has 237 states and 310 transitions. [2021-11-20 07:31:08,708 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 5 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 4 states have call predecessors, (17), 5 states have call successors, (17) [2021-11-20 07:31:08,708 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 310 transitions. [2021-11-20 07:31:08,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2021-11-20 07:31:08,710 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:31:08,710 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:31:08,746 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eef7acd8-2fe6-4b7b-9c2a-2780b0ed5e21/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-20 07:31:08,924 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eef7acd8-2fe6-4b7b-9c2a-2780b0ed5e21/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:31:08,924 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:31:08,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:31:08,925 INFO L85 PathProgramCache]: Analyzing trace with hash 1195830657, now seen corresponding path program 1 times [2021-11-20 07:31:08,925 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:31:08,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187819693] [2021-11-20 07:31:08,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:31:08,925 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:31:08,976 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 07:31:08,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1299451632] [2021-11-20 07:31:08,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:31:08,976 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:31:08,977 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eef7acd8-2fe6-4b7b-9c2a-2780b0ed5e21/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:31:08,977 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eef7acd8-2fe6-4b7b-9c2a-2780b0ed5e21/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:31:08,991 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eef7acd8-2fe6-4b7b-9c2a-2780b0ed5e21/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-20 07:31:09,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:31:09,652 INFO L263 TraceCheckSpWp]: Trace formula consists of 2685 conjuncts, 270 conjunts are in the unsatisfiable core [2021-11-20 07:31:09,662 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:31:09,722 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 07:31:10,347 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2021-11-20 07:31:10,352 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2021-11-20 07:31:14,136 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-20 07:31:15,756 INFO L354 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2021-11-20 07:31:15,757 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 32 treesize of output 29 [2021-11-20 07:31:16,163 INFO L354 Elim1Store]: treesize reduction 162, result has 21.0 percent of original size [2021-11-20 07:31:16,163 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 43 treesize of output 71 [2021-11-20 07:31:24,468 WARN L227 SmtUtils]: Spent 5.54s on a formula simplification that was a NOOP. DAG size: 3 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-20 07:31:27,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:31:27,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:31:27,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:31:27,132 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 115 treesize of output 117 [2021-11-20 07:31:27,302 INFO L354 Elim1Store]: treesize reduction 184, result has 10.2 percent of original size [2021-11-20 07:31:27,302 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 112 treesize of output 115 [2021-11-20 07:31:29,841 INFO L354 Elim1Store]: treesize reduction 368, result has 16.6 percent of original size [2021-11-20 07:31:29,844 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 44 case distinctions, treesize of input 130 treesize of output 183 [2021-11-20 07:31:39,594 WARN L860 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~b#1| Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset| Int) (|aws_mul_size_checked_aws_mul_u64_checked_~a#1| Int)) (= |c_#memory_int| (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| (store (select |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base|) |aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset| (* |aws_mul_size_checked_aws_mul_u64_checked_~b#1| |aws_mul_size_checked_aws_mul_u64_checked_~a#1|))))) is different from true [2021-11-20 07:32:03,636 INFO L354 Elim1Store]: treesize reduction 216, result has 27.3 percent of original size [2021-11-20 07:32:03,636 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 36 case distinctions, treesize of input 193 treesize of output 225 [2021-11-20 07:32:04,254 INFO L354 Elim1Store]: treesize reduction 244, result has 32.4 percent of original size [2021-11-20 07:32:04,255 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 239 treesize of output 335 [2021-11-20 07:36:57,838 WARN L227 SmtUtils]: Spent 14.69s on a formula simplification. DAG size of input: 64 DAG size of output: 35 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-20 07:36:57,839 INFO L354 Elim1Store]: treesize reduction 80, result has 38.0 percent of original size [2021-11-20 07:36:57,840 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 6 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 237 treesize of output 185 [2021-11-20 07:37:07,997 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 28 proven. 108 refuted. 0 times theorem prover too weak. 9 trivial. 9 not checked. [2021-11-20 07:37:07,997 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:37:32,111 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|v_aws_mul_size_checked_#in~r#1.base_7| Int)) (let ((.cse0 (let ((.cse1 (select |c_#memory_int| |c_aws_array_list_ensure_capacity_aws_array_list_calc_necessary_size_~list#1.base|))) (* (select .cse1 (+ 16 |c_aws_array_list_ensure_capacity_aws_array_list_calc_necessary_size_~list#1.offset|)) (select .cse1 (+ |c_aws_array_list_ensure_capacity_aws_array_list_calc_necessary_size_~list#1.offset| 24)))))) (<= (mod .cse0 18446744073709551616) (mod (select (select (store |c_#memory_int| |v_aws_mul_size_checked_#in~r#1.base_7| (store (select |c_#memory_int| |v_aws_mul_size_checked_#in~r#1.base_7|) 0 .cse0)) |c_aws_array_list_ensure_capacity_aws_array_list_calc_necessary_size_~list#1.base|) (+ |c_aws_array_list_ensure_capacity_aws_array_list_calc_necessary_size_~list#1.offset| 8)) 18446744073709551616)))) (forall ((|v_aws_mul_size_checked_#in~r#1.base_7| Int)) (let ((.cse3 (+ |c_aws_array_list_ensure_capacity_aws_array_list_calc_necessary_size_~list#1.offset| 24))) (let ((.cse4 (let ((.cse5 (select |c_#memory_int| |c_aws_array_list_ensure_capacity_aws_array_list_calc_necessary_size_~list#1.base|))) (* (select .cse5 (+ 16 |c_aws_array_list_ensure_capacity_aws_array_list_calc_necessary_size_~list#1.offset|)) (select .cse5 .cse3))))) (let ((.cse2 (select (store |c_#memory_int| |v_aws_mul_size_checked_#in~r#1.base_7| (store (select |c_#memory_int| |v_aws_mul_size_checked_#in~r#1.base_7|) 0 .cse4)) |c_aws_array_list_ensure_capacity_aws_array_list_calc_necessary_size_~list#1.base|))) (or (not (= (mod (select .cse2 .cse3) 18446744073709551616) 0)) (< (mod (select .cse2 (+ |c_aws_array_list_ensure_capacity_aws_array_list_calc_necessary_size_~list#1.offset| 8)) 18446744073709551616) (mod .cse4 18446744073709551616)))))))) is different from false [2021-11-20 07:37:32,115 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:37:32,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187819693] [2021-11-20 07:37:32,116 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 07:37:32,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1299451632] [2021-11-20 07:37:32,116 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1299451632] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 07:37:32,116 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-11-20 07:37:32,116 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [60] total 60 [2021-11-20 07:37:32,116 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495218691] [2021-11-20 07:37:32,116 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-11-20 07:37:32,117 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2021-11-20 07:37:32,117 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:37:32,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2021-11-20 07:37:32,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=223, Invalid=3539, Unknown=28, NotChecked=242, Total=4032 [2021-11-20 07:37:32,120 INFO L87 Difference]: Start difference. First operand 237 states and 310 transitions. Second operand has 60 states, 48 states have (on average 2.1041666666666665) internal successors, (101), 47 states have internal predecessors, (101), 20 states have call successors, (25), 11 states have call predecessors, (25), 17 states have return successors, (23), 17 states have call predecessors, (23), 18 states have call successors, (23) [2021-11-20 07:38:15,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:38:15,164 INFO L93 Difference]: Finished difference Result 369 states and 487 transitions. [2021-11-20 07:38:15,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2021-11-20 07:38:15,166 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 48 states have (on average 2.1041666666666665) internal successors, (101), 47 states have internal predecessors, (101), 20 states have call successors, (25), 11 states have call predecessors, (25), 17 states have return successors, (23), 17 states have call predecessors, (23), 18 states have call successors, (23) Word has length 153 [2021-11-20 07:38:15,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:38:15,169 INFO L225 Difference]: With dead ends: 369 [2021-11-20 07:38:15,169 INFO L226 Difference]: Without dead ends: 367 [2021-11-20 07:38:15,173 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 95 SyntacticMatches, 6 SemanticMatches, 92 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 2504 ImplicationChecksByTransitivity, 108.3s TimeCoverageRelationStatistics Valid=462, Invalid=7877, Unknown=41, NotChecked=362, Total=8742 [2021-11-20 07:38:15,174 INFO L933 BasicCegarLoop]: 297 mSDtfsCounter, 157 mSDsluCounter, 4985 mSDsCounter, 0 mSdLazyCounter, 2715 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 5282 SdHoareTripleChecker+Invalid, 6908 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 2715 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 4094 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2021-11-20 07:38:15,174 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [172 Valid, 5282 Invalid, 6908 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 2715 Invalid, 0 Unknown, 4094 Unchecked, 2.6s Time] [2021-11-20 07:38:15,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2021-11-20 07:38:15,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 327. [2021-11-20 07:38:15,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 327 states, 205 states have (on average 1.175609756097561) internal successors, (241), 209 states have internal predecessors, (241), 88 states have call successors, (88), 31 states have call predecessors, (88), 33 states have return successors, (109), 86 states have call predecessors, (109), 85 states have call successors, (109) [2021-11-20 07:38:15,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 438 transitions. [2021-11-20 07:38:15,204 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 438 transitions. Word has length 153 [2021-11-20 07:38:15,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:38:15,205 INFO L470 AbstractCegarLoop]: Abstraction has 327 states and 438 transitions. [2021-11-20 07:38:15,206 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 48 states have (on average 2.1041666666666665) internal successors, (101), 47 states have internal predecessors, (101), 20 states have call successors, (25), 11 states have call predecessors, (25), 17 states have return successors, (23), 17 states have call predecessors, (23), 18 states have call successors, (23) [2021-11-20 07:38:15,206 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 438 transitions. [2021-11-20 07:38:15,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-11-20 07:38:15,209 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:38:15,209 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:38:15,249 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eef7acd8-2fe6-4b7b-9c2a-2780b0ed5e21/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-20 07:38:15,425 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eef7acd8-2fe6-4b7b-9c2a-2780b0ed5e21/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:38:15,426 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:38:15,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:38:15,426 INFO L85 PathProgramCache]: Analyzing trace with hash -1180527824, now seen corresponding path program 1 times [2021-11-20 07:38:15,426 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:38:15,426 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514301808] [2021-11-20 07:38:15,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:38:15,426 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:38:15,532 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 07:38:15,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [724052982] [2021-11-20 07:38:15,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:38:15,533 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:38:15,533 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eef7acd8-2fe6-4b7b-9c2a-2780b0ed5e21/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:38:15,534 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eef7acd8-2fe6-4b7b-9c2a-2780b0ed5e21/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:38:15,550 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eef7acd8-2fe6-4b7b-9c2a-2780b0ed5e21/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-20 07:38:16,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:38:16,098 INFO L263 TraceCheckSpWp]: Trace formula consists of 2708 conjuncts, 53 conjunts are in the unsatisfiable core [2021-11-20 07:38:16,102 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:38:16,112 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 07:38:16,322 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2021-11-20 07:38:16,370 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2021-11-20 07:38:16,524 INFO L354 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2021-11-20 07:38:16,524 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 32 [2021-11-20 07:38:16,592 INFO L354 Elim1Store]: treesize reduction 30, result has 34.8 percent of original size [2021-11-20 07:38:16,592 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 29 treesize of output 33 [2021-11-20 07:38:18,871 WARN L860 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset| Int)) (= (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base|) |aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset| (select (select |c_#memory_$Pointer$.base| |c_aws_mul_size_checked_#in~r#1.base|) |aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset|))) |c_#memory_$Pointer$.base|)) is different from true [2021-11-20 07:38:19,430 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 81 proven. 4 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2021-11-20 07:38:19,430 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:38:19,896 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:38:19,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514301808] [2021-11-20 07:38:19,897 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 07:38:19,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [724052982] [2021-11-20 07:38:19,897 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [724052982] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 07:38:19,897 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-11-20 07:38:19,897 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2021-11-20 07:38:19,897 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718741399] [2021-11-20 07:38:19,898 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-11-20 07:38:19,898 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-20 07:38:19,898 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:38:19,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-20 07:38:19,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=398, Unknown=1, NotChecked=40, Total=506 [2021-11-20 07:38:19,899 INFO L87 Difference]: Start difference. First operand 327 states and 438 transitions. Second operand has 22 states, 20 states have (on average 3.75) internal successors, (75), 18 states have internal predecessors, (75), 8 states have call successors, (22), 7 states have call predecessors, (22), 8 states have return successors, (20), 8 states have call predecessors, (20), 8 states have call successors, (20) [2021-11-20 07:38:30,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:38:30,613 INFO L93 Difference]: Finished difference Result 593 states and 788 transitions. [2021-11-20 07:38:30,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-20 07:38:30,615 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 20 states have (on average 3.75) internal successors, (75), 18 states have internal predecessors, (75), 8 states have call successors, (22), 7 states have call predecessors, (22), 8 states have return successors, (20), 8 states have call predecessors, (20), 8 states have call successors, (20) Word has length 159 [2021-11-20 07:38:30,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:38:30,618 INFO L225 Difference]: With dead ends: 593 [2021-11-20 07:38:30,618 INFO L226 Difference]: Without dead ends: 366 [2021-11-20 07:38:30,619 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 241 SyntacticMatches, 4 SemanticMatches, 25 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 12.4s TimeCoverageRelationStatistics Valid=89, Invalid=560, Unknown=5, NotChecked=48, Total=702 [2021-11-20 07:38:30,620 INFO L933 BasicCegarLoop]: 286 mSDtfsCounter, 106 mSDsluCounter, 1389 mSDsCounter, 0 mSdLazyCounter, 769 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 1675 SdHoareTripleChecker+Invalid, 2050 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 769 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1192 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-20 07:38:30,620 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [123 Valid, 1675 Invalid, 2050 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 769 Invalid, 0 Unknown, 1192 Unchecked, 0.8s Time] [2021-11-20 07:38:30,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2021-11-20 07:38:30,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 350. [2021-11-20 07:38:30,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 350 states, 220 states have (on average 1.1727272727272726) internal successors, (258), 225 states have internal predecessors, (258), 92 states have call successors, (92), 34 states have call predecessors, (92), 37 states have return successors, (115), 90 states have call predecessors, (115), 89 states have call successors, (115) [2021-11-20 07:38:30,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 465 transitions. [2021-11-20 07:38:30,650 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 465 transitions. Word has length 159 [2021-11-20 07:38:30,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:38:30,650 INFO L470 AbstractCegarLoop]: Abstraction has 350 states and 465 transitions. [2021-11-20 07:38:30,651 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 20 states have (on average 3.75) internal successors, (75), 18 states have internal predecessors, (75), 8 states have call successors, (22), 7 states have call predecessors, (22), 8 states have return successors, (20), 8 states have call predecessors, (20), 8 states have call successors, (20) [2021-11-20 07:38:30,651 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 465 transitions. [2021-11-20 07:38:30,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-11-20 07:38:30,654 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:38:30,654 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:38:30,695 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eef7acd8-2fe6-4b7b-9c2a-2780b0ed5e21/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-20 07:38:30,872 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eef7acd8-2fe6-4b7b-9c2a-2780b0ed5e21/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-11-20 07:38:30,872 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:38:30,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:38:30,873 INFO L85 PathProgramCache]: Analyzing trace with hash 867805371, now seen corresponding path program 1 times [2021-11-20 07:38:30,873 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:38:30,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26366749] [2021-11-20 07:38:30,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:38:30,873 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:38:30,932 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 07:38:30,933 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1766176892] [2021-11-20 07:38:30,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:38:30,933 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:38:30,933 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eef7acd8-2fe6-4b7b-9c2a-2780b0ed5e21/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:38:30,934 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eef7acd8-2fe6-4b7b-9c2a-2780b0ed5e21/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:38:30,939 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eef7acd8-2fe6-4b7b-9c2a-2780b0ed5e21/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-20 07:38:31,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:38:31,475 INFO L263 TraceCheckSpWp]: Trace formula consists of 2733 conjuncts, 55 conjunts are in the unsatisfiable core [2021-11-20 07:38:31,480 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:38:32,239 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 120 proven. 16 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2021-11-20 07:38:32,239 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:38:33,465 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 19 proven. 31 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2021-11-20 07:38:33,465 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:38:33,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26366749] [2021-11-20 07:38:33,465 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 07:38:33,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1766176892] [2021-11-20 07:38:33,466 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1766176892] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 07:38:33,466 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 07:38:33,466 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 15] total 27 [2021-11-20 07:38:33,466 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023818750] [2021-11-20 07:38:33,466 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 07:38:33,467 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-11-20 07:38:33,467 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:38:33,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-11-20 07:38:33,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=643, Unknown=0, NotChecked=0, Total=702 [2021-11-20 07:38:33,469 INFO L87 Difference]: Start difference. First operand 350 states and 465 transitions. Second operand has 27 states, 23 states have (on average 5.217391304347826) internal successors, (120), 19 states have internal predecessors, (120), 8 states have call successors, (36), 5 states have call predecessors, (36), 9 states have return successors, (37), 10 states have call predecessors, (37), 7 states have call successors, (37) [2021-11-20 07:38:35,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:38:35,907 INFO L93 Difference]: Finished difference Result 584 states and 787 transitions. [2021-11-20 07:38:35,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-20 07:38:35,909 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 23 states have (on average 5.217391304347826) internal successors, (120), 19 states have internal predecessors, (120), 8 states have call successors, (36), 5 states have call predecessors, (36), 9 states have return successors, (37), 10 states have call predecessors, (37), 7 states have call successors, (37) Word has length 171 [2021-11-20 07:38:35,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:38:35,912 INFO L225 Difference]: With dead ends: 584 [2021-11-20 07:38:35,913 INFO L226 Difference]: Without dead ends: 370 [2021-11-20 07:38:35,915 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 362 GetRequests, 314 SyntacticMatches, 4 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=164, Invalid=1906, Unknown=0, NotChecked=0, Total=2070 [2021-11-20 07:38:35,916 INFO L933 BasicCegarLoop]: 277 mSDtfsCounter, 118 mSDsluCounter, 4361 mSDsCounter, 0 mSdLazyCounter, 2267 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 4638 SdHoareTripleChecker+Invalid, 2600 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 2267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 242 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-11-20 07:38:35,916 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [139 Valid, 4638 Invalid, 2600 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 2267 Invalid, 0 Unknown, 242 Unchecked, 1.9s Time] [2021-11-20 07:38:35,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2021-11-20 07:38:35,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 360. [2021-11-20 07:38:35,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 360 states, 228 states have (on average 1.1710526315789473) internal successors, (267), 235 states have internal predecessors, (267), 92 states have call successors, (92), 34 states have call predecessors, (92), 39 states have return successors, (129), 90 states have call predecessors, (129), 89 states have call successors, (129) [2021-11-20 07:38:35,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 488 transitions. [2021-11-20 07:38:35,949 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 488 transitions. Word has length 171 [2021-11-20 07:38:35,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:38:35,950 INFO L470 AbstractCegarLoop]: Abstraction has 360 states and 488 transitions. [2021-11-20 07:38:35,950 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 23 states have (on average 5.217391304347826) internal successors, (120), 19 states have internal predecessors, (120), 8 states have call successors, (36), 5 states have call predecessors, (36), 9 states have return successors, (37), 10 states have call predecessors, (37), 7 states have call successors, (37) [2021-11-20 07:38:35,950 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 488 transitions. [2021-11-20 07:38:35,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2021-11-20 07:38:35,953 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:38:35,954 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:38:35,993 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eef7acd8-2fe6-4b7b-9c2a-2780b0ed5e21/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-20 07:38:36,169 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eef7acd8-2fe6-4b7b-9c2a-2780b0ed5e21/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:38:36,170 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:38:36,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:38:36,170 INFO L85 PathProgramCache]: Analyzing trace with hash 137537217, now seen corresponding path program 1 times [2021-11-20 07:38:36,170 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:38:36,170 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883710455] [2021-11-20 07:38:36,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:38:36,170 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:38:36,243 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 07:38:36,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [305966090] [2021-11-20 07:38:36,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:38:36,244 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:38:36,244 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eef7acd8-2fe6-4b7b-9c2a-2780b0ed5e21/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:38:36,245 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eef7acd8-2fe6-4b7b-9c2a-2780b0ed5e21/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:38:36,261 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eef7acd8-2fe6-4b7b-9c2a-2780b0ed5e21/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-20 07:38:36,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:38:36,728 INFO L263 TraceCheckSpWp]: Trace formula consists of 2721 conjuncts, 43 conjunts are in the unsatisfiable core [2021-11-20 07:38:36,735 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:38:36,831 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-11-20 07:38:36,991 INFO L354 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2021-11-20 07:38:36,991 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 21 [2021-11-20 07:38:39,247 WARN L860 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| (select (select |c_#memory_$Pointer$.base| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset|))) |c_#memory_$Pointer$.base|)) is different from true [2021-11-20 07:39:28,317 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2021-11-20 07:39:28,318 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 07:39:28,318 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:39:28,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883710455] [2021-11-20 07:39:28,318 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 07:39:28,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [305966090] [2021-11-20 07:39:28,318 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [305966090] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:39:28,318 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:39:28,318 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-11-20 07:39:28,318 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136634404] [2021-11-20 07:39:28,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:39:28,319 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-20 07:39:28,319 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:39:28,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-20 07:39:28,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=239, Unknown=21, NotChecked=32, Total=342 [2021-11-20 07:39:28,320 INFO L87 Difference]: Start difference. First operand 360 states and 488 transitions. Second operand has 19 states, 17 states have (on average 4.411764705882353) internal successors, (75), 16 states have internal predecessors, (75), 8 states have call successors, (23), 4 states have call predecessors, (23), 7 states have return successors, (21), 8 states have call predecessors, (21), 8 states have call successors, (21) [2021-11-20 07:39:29,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:39:29,453 INFO L93 Difference]: Finished difference Result 635 states and 878 transitions. [2021-11-20 07:39:29,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-20 07:39:29,455 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 4.411764705882353) internal successors, (75), 16 states have internal predecessors, (75), 8 states have call successors, (23), 4 states have call predecessors, (23), 7 states have return successors, (21), 8 states have call predecessors, (21), 8 states have call successors, (21) Word has length 164 [2021-11-20 07:39:29,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:39:29,459 INFO L225 Difference]: With dead ends: 635 [2021-11-20 07:39:29,459 INFO L226 Difference]: Without dead ends: 401 [2021-11-20 07:39:29,461 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 143 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 51.1s TimeCoverageRelationStatistics Valid=68, Invalid=377, Unknown=21, NotChecked=40, Total=506 [2021-11-20 07:39:29,462 INFO L933 BasicCegarLoop]: 288 mSDtfsCounter, 118 mSDsluCounter, 1441 mSDsCounter, 0 mSdLazyCounter, 850 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 1729 SdHoareTripleChecker+Invalid, 2404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 850 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1465 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-20 07:39:29,463 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [145 Valid, 1729 Invalid, 2404 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 850 Invalid, 0 Unknown, 1465 Unchecked, 1.0s Time] [2021-11-20 07:39:29,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2021-11-20 07:39:29,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 366. [2021-11-20 07:39:29,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 366 states, 232 states have (on average 1.168103448275862) internal successors, (271), 240 states have internal predecessors, (271), 92 states have call successors, (92), 35 states have call predecessors, (92), 41 states have return successors, (141), 90 states have call predecessors, (141), 89 states have call successors, (141) [2021-11-20 07:39:29,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366 states to 366 states and 504 transitions. [2021-11-20 07:39:29,502 INFO L78 Accepts]: Start accepts. Automaton has 366 states and 504 transitions. Word has length 164 [2021-11-20 07:39:29,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:39:29,502 INFO L470 AbstractCegarLoop]: Abstraction has 366 states and 504 transitions. [2021-11-20 07:39:29,502 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 4.411764705882353) internal successors, (75), 16 states have internal predecessors, (75), 8 states have call successors, (23), 4 states have call predecessors, (23), 7 states have return successors, (21), 8 states have call predecessors, (21), 8 states have call successors, (21) [2021-11-20 07:39:29,503 INFO L276 IsEmpty]: Start isEmpty. Operand 366 states and 504 transitions. [2021-11-20 07:39:29,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-11-20 07:39:29,505 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:39:29,505 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:39:29,546 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eef7acd8-2fe6-4b7b-9c2a-2780b0ed5e21/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-20 07:39:29,725 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eef7acd8-2fe6-4b7b-9c2a-2780b0ed5e21/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-20 07:39:29,725 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:39:29,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:39:29,726 INFO L85 PathProgramCache]: Analyzing trace with hash 939814841, now seen corresponding path program 1 times [2021-11-20 07:39:29,726 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:39:29,726 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534602400] [2021-11-20 07:39:29,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:39:29,726 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:39:29,779 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 07:39:29,779 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [838597098] [2021-11-20 07:39:29,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:39:29,779 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:39:29,780 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eef7acd8-2fe6-4b7b-9c2a-2780b0ed5e21/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:39:29,781 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eef7acd8-2fe6-4b7b-9c2a-2780b0ed5e21/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:39:29,807 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eef7acd8-2fe6-4b7b-9c2a-2780b0ed5e21/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-20 07:39:30,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:39:30,314 INFO L263 TraceCheckSpWp]: Trace formula consists of 2685 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-20 07:39:30,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:39:30,657 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 100 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2021-11-20 07:39:30,657 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 07:39:30,658 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:39:30,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534602400] [2021-11-20 07:39:30,658 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 07:39:30,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [838597098] [2021-11-20 07:39:30,658 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [838597098] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:39:30,658 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:39:30,659 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 07:39:30,659 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047139340] [2021-11-20 07:39:30,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:39:30,660 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 07:39:30,660 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:39:30,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 07:39:30,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 07:39:30,661 INFO L87 Difference]: Start difference. First operand 366 states and 504 transitions. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-11-20 07:39:31,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:39:31,028 INFO L93 Difference]: Finished difference Result 652 states and 961 transitions. [2021-11-20 07:39:31,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 07:39:31,029 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 155 [2021-11-20 07:39:31,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:39:31,032 INFO L225 Difference]: With dead ends: 652 [2021-11-20 07:39:31,032 INFO L226 Difference]: Without dead ends: 378 [2021-11-20 07:39:31,035 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-20 07:39:31,035 INFO L933 BasicCegarLoop]: 311 mSDtfsCounter, 7 mSDsluCounter, 840 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 1151 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-20 07:39:31,035 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 1151 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-20 07:39:31,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2021-11-20 07:39:31,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 370. [2021-11-20 07:39:31,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 370 states, 236 states have (on average 1.1610169491525424) internal successors, (274), 244 states have internal predecessors, (274), 92 states have call successors, (92), 35 states have call predecessors, (92), 41 states have return successors, (141), 90 states have call predecessors, (141), 89 states have call successors, (141) [2021-11-20 07:39:31,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 507 transitions. [2021-11-20 07:39:31,071 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 507 transitions. Word has length 155 [2021-11-20 07:39:31,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:39:31,072 INFO L470 AbstractCegarLoop]: Abstraction has 370 states and 507 transitions. [2021-11-20 07:39:31,072 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-11-20 07:39:31,072 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 507 transitions. [2021-11-20 07:39:31,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-11-20 07:39:31,076 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:39:31,076 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:39:31,117 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eef7acd8-2fe6-4b7b-9c2a-2780b0ed5e21/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-20 07:39:31,289 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eef7acd8-2fe6-4b7b-9c2a-2780b0ed5e21/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-11-20 07:39:31,289 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:39:31,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:39:31,290 INFO L85 PathProgramCache]: Analyzing trace with hash 1180054587, now seen corresponding path program 1 times [2021-11-20 07:39:31,290 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:39:31,290 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842587155] [2021-11-20 07:39:31,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:39:31,290 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:39:31,344 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 07:39:31,344 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1894631600] [2021-11-20 07:39:31,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:39:31,345 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:39:31,345 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eef7acd8-2fe6-4b7b-9c2a-2780b0ed5e21/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:39:31,346 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eef7acd8-2fe6-4b7b-9c2a-2780b0ed5e21/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:39:31,369 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eef7acd8-2fe6-4b7b-9c2a-2780b0ed5e21/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-20 07:39:31,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:39:31,917 INFO L263 TraceCheckSpWp]: Trace formula consists of 2690 conjuncts, 107 conjunts are in the unsatisfiable core [2021-11-20 07:39:31,923 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:39:32,001 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-20 07:39:34,092 WARN L860 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~b#1| Int) (|aws_mul_size_checked_aws_mul_u64_checked_~a#1| Int)) (= |c_#memory_int| (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| (store (select |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| (* |aws_mul_size_checked_aws_mul_u64_checked_~b#1| |aws_mul_size_checked_aws_mul_u64_checked_~a#1|))))) is different from true [2021-11-20 07:39:35,659 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-20 07:39:35,660 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 25 [2021-11-20 07:39:35,794 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 119 proven. 5 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-11-20 07:39:35,794 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:39:36,557 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:39:36,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842587155] [2021-11-20 07:39:36,558 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 07:39:36,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1894631600] [2021-11-20 07:39:36,558 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1894631600] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 07:39:36,558 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-11-20 07:39:36,558 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2021-11-20 07:39:36,561 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414879442] [2021-11-20 07:39:36,561 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-11-20 07:39:36,562 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-20 07:39:36,563 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:39:36,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-20 07:39:36,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=261, Unknown=1, NotChecked=32, Total=342 [2021-11-20 07:39:36,564 INFO L87 Difference]: Start difference. First operand 370 states and 507 transitions. Second operand has 18 states, 16 states have (on average 5.3125) internal successors, (85), 15 states have internal predecessors, (85), 8 states have call successors, (23), 5 states have call predecessors, (23), 6 states have return successors, (21), 7 states have call predecessors, (21), 8 states have call successors, (21) [2021-11-20 07:39:39,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:39:39,002 INFO L93 Difference]: Finished difference Result 664 states and 955 transitions. [2021-11-20 07:39:39,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-20 07:39:39,004 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 5.3125) internal successors, (85), 15 states have internal predecessors, (85), 8 states have call successors, (23), 5 states have call predecessors, (23), 6 states have return successors, (21), 7 states have call predecessors, (21), 8 states have call successors, (21) Word has length 155 [2021-11-20 07:39:39,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:39:39,008 INFO L225 Difference]: With dead ends: 664 [2021-11-20 07:39:39,008 INFO L226 Difference]: Without dead ends: 434 [2021-11-20 07:39:39,011 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 186 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=87, Invalid=468, Unknown=1, NotChecked=44, Total=600 [2021-11-20 07:39:39,011 INFO L933 BasicCegarLoop]: 274 mSDtfsCounter, 109 mSDsluCounter, 1465 mSDsCounter, 0 mSdLazyCounter, 1482 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 1739 SdHoareTripleChecker+Invalid, 2703 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 1482 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1127 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-11-20 07:39:39,012 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [143 Valid, 1739 Invalid, 2703 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 1482 Invalid, 0 Unknown, 1127 Unchecked, 2.1s Time] [2021-11-20 07:39:39,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2021-11-20 07:39:39,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 395. [2021-11-20 07:39:39,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395 states, 253 states have (on average 1.1541501976284585) internal successors, (292), 263 states have internal predecessors, (292), 97 states have call successors, (97), 39 states have call predecessors, (97), 44 states have return successors, (176), 92 states have call predecessors, (176), 94 states have call successors, (176) [2021-11-20 07:39:39,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 565 transitions. [2021-11-20 07:39:39,049 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 565 transitions. Word has length 155 [2021-11-20 07:39:39,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:39:39,050 INFO L470 AbstractCegarLoop]: Abstraction has 395 states and 565 transitions. [2021-11-20 07:39:39,050 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 5.3125) internal successors, (85), 15 states have internal predecessors, (85), 8 states have call successors, (23), 5 states have call predecessors, (23), 6 states have return successors, (21), 7 states have call predecessors, (21), 8 states have call successors, (21) [2021-11-20 07:39:39,050 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 565 transitions. [2021-11-20 07:39:39,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-11-20 07:39:39,053 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:39:39,053 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:39:39,099 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eef7acd8-2fe6-4b7b-9c2a-2780b0ed5e21/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-20 07:39:39,281 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eef7acd8-2fe6-4b7b-9c2a-2780b0ed5e21/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-11-20 07:39:39,281 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:39:39,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:39:39,282 INFO L85 PathProgramCache]: Analyzing trace with hash -138376521, now seen corresponding path program 1 times [2021-11-20 07:39:39,282 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:39:39,282 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883959456] [2021-11-20 07:39:39,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:39:39,282 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:39:39,347 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 07:39:39,347 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [500799627] [2021-11-20 07:39:39,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:39:39,347 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:39:39,348 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eef7acd8-2fe6-4b7b-9c2a-2780b0ed5e21/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:39:39,349 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eef7acd8-2fe6-4b7b-9c2a-2780b0ed5e21/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:39:39,365 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eef7acd8-2fe6-4b7b-9c2a-2780b0ed5e21/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-20 07:39:39,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:39:39,921 INFO L263 TraceCheckSpWp]: Trace formula consists of 2722 conjuncts, 31 conjunts are in the unsatisfiable core [2021-11-20 07:39:39,927 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:39:40,372 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 99 proven. 1 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2021-11-20 07:39:40,372 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:39:41,352 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 32 proven. 15 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2021-11-20 07:39:41,352 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:39:41,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883959456] [2021-11-20 07:39:41,352 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 07:39:41,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [500799627] [2021-11-20 07:39:41,352 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [500799627] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 07:39:41,352 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 07:39:41,353 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 15] total 21 [2021-11-20 07:39:41,353 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072720793] [2021-11-20 07:39:41,353 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 07:39:41,354 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-20 07:39:41,354 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:39:41,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-20 07:39:41,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=375, Unknown=0, NotChecked=0, Total=420 [2021-11-20 07:39:41,355 INFO L87 Difference]: Start difference. First operand 395 states and 565 transitions. Second operand has 21 states, 18 states have (on average 6.0) internal successors, (108), 14 states have internal predecessors, (108), 5 states have call successors, (29), 3 states have call predecessors, (29), 7 states have return successors, (30), 8 states have call predecessors, (30), 4 states have call successors, (30) [2021-11-20 07:39:41,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:39:41,910 INFO L93 Difference]: Finished difference Result 630 states and 904 transitions. [2021-11-20 07:39:41,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-20 07:39:41,912 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 18 states have (on average 6.0) internal successors, (108), 14 states have internal predecessors, (108), 5 states have call successors, (29), 3 states have call predecessors, (29), 7 states have return successors, (30), 8 states have call predecessors, (30), 4 states have call successors, (30) Word has length 167 [2021-11-20 07:39:41,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:39:41,916 INFO L225 Difference]: With dead ends: 630 [2021-11-20 07:39:41,916 INFO L226 Difference]: Without dead ends: 396 [2021-11-20 07:39:41,918 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 336 GetRequests, 312 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=65, Invalid=535, Unknown=0, NotChecked=0, Total=600 [2021-11-20 07:39:41,919 INFO L933 BasicCegarLoop]: 303 mSDtfsCounter, 21 mSDsluCounter, 4461 mSDsCounter, 0 mSdLazyCounter, 389 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 4764 SdHoareTripleChecker+Invalid, 392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-20 07:39:41,919 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 4764 Invalid, 392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 389 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-20 07:39:41,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2021-11-20 07:39:41,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 392. [2021-11-20 07:39:41,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 251 states have (on average 1.155378486055777) internal successors, (290), 261 states have internal predecessors, (290), 96 states have call successors, (96), 38 states have call predecessors, (96), 44 states have return successors, (168), 92 states have call predecessors, (168), 93 states have call successors, (168) [2021-11-20 07:39:41,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 554 transitions. [2021-11-20 07:39:41,954 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 554 transitions. Word has length 167 [2021-11-20 07:39:41,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:39:41,954 INFO L470 AbstractCegarLoop]: Abstraction has 392 states and 554 transitions. [2021-11-20 07:39:41,955 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 18 states have (on average 6.0) internal successors, (108), 14 states have internal predecessors, (108), 5 states have call successors, (29), 3 states have call predecessors, (29), 7 states have return successors, (30), 8 states have call predecessors, (30), 4 states have call successors, (30) [2021-11-20 07:39:41,955 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 554 transitions. [2021-11-20 07:39:41,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-11-20 07:39:41,958 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:39:41,958 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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] [2021-11-20 07:39:42,000 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eef7acd8-2fe6-4b7b-9c2a-2780b0ed5e21/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-11-20 07:39:42,185 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eef7acd8-2fe6-4b7b-9c2a-2780b0ed5e21/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-11-20 07:39:42,185 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:39:42,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:39:42,186 INFO L85 PathProgramCache]: Analyzing trace with hash -1482041927, now seen corresponding path program 1 times [2021-11-20 07:39:42,186 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:39:42,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241565189] [2021-11-20 07:39:42,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:39:42,186 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:39:42,240 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 07:39:42,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1874435235] [2021-11-20 07:39:42,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:39:42,241 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:39:42,241 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eef7acd8-2fe6-4b7b-9c2a-2780b0ed5e21/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:39:42,242 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eef7acd8-2fe6-4b7b-9c2a-2780b0ed5e21/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:39:42,261 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eef7acd8-2fe6-4b7b-9c2a-2780b0ed5e21/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-20 07:39:42,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:39:42,760 INFO L263 TraceCheckSpWp]: Trace formula consists of 2706 conjuncts, 72 conjunts are in the unsatisfiable core [2021-11-20 07:39:42,766 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:39:42,787 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 07:39:50,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:39:50,463 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-11-20 07:39:50,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:39:50,475 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-11-20 07:39:54,349 WARN L860 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset| Int)) (and (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base|) |aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset| (select (select |c_#memory_$Pointer$.offset| |c_aws_mul_size_checked_#in~r#1.base|) |aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset|)))) (= (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base|) |aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset| (select (select |c_#memory_$Pointer$.base| |c_aws_mul_size_checked_#in~r#1.base|) |aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset|))) |c_#memory_$Pointer$.base|))) is different from true [2021-11-20 07:39:55,437 INFO L354 Elim1Store]: treesize reduction 43, result has 2.3 percent of original size [2021-11-20 07:39:55,437 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 59 treesize of output 1 [2021-11-20 07:39:55,731 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 81 proven. 4 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2021-11-20 07:39:55,732 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:39:56,617 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:39:56,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241565189] [2021-11-20 07:39:56,618 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 07:39:56,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1874435235] [2021-11-20 07:39:56,618 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1874435235] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 07:39:56,618 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-11-20 07:39:56,619 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2021-11-20 07:39:56,619 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315114033] [2021-11-20 07:39:56,619 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-11-20 07:39:56,619 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-20 07:39:56,619 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:39:56,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-20 07:39:56,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=4, NotChecked=28, Total=272 [2021-11-20 07:39:56,620 INFO L87 Difference]: Start difference. First operand 392 states and 554 transitions. Second operand has 16 states, 15 states have (on average 5.0) internal successors, (75), 14 states have internal predecessors, (75), 5 states have call successors, (22), 5 states have call predecessors, (22), 6 states have return successors, (20), 5 states have call predecessors, (20), 5 states have call successors, (20) [2021-11-20 07:40:02,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:40:02,581 INFO L93 Difference]: Finished difference Result 671 states and 951 transitions. [2021-11-20 07:40:02,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-20 07:40:02,582 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 5.0) internal successors, (75), 14 states have internal predecessors, (75), 5 states have call successors, (22), 5 states have call predecessors, (22), 6 states have return successors, (20), 5 states have call predecessors, (20), 5 states have call successors, (20) Word has length 161 [2021-11-20 07:40:02,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:40:02,587 INFO L225 Difference]: With dead ends: 671 [2021-11-20 07:40:02,587 INFO L226 Difference]: Without dead ends: 413 [2021-11-20 07:40:02,589 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 254 SyntacticMatches, 3 SemanticMatches, 17 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 15.8s TimeCoverageRelationStatistics Valid=51, Invalid=253, Unknown=6, NotChecked=32, Total=342 [2021-11-20 07:40:02,590 INFO L933 BasicCegarLoop]: 284 mSDtfsCounter, 105 mSDsluCounter, 846 mSDsCounter, 0 mSdLazyCounter, 725 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 1130 SdHoareTripleChecker+Invalid, 2812 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 725 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1995 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-11-20 07:40:02,591 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [120 Valid, 1130 Invalid, 2812 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 725 Invalid, 0 Unknown, 1995 Unchecked, 1.8s Time] [2021-11-20 07:40:02,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2021-11-20 07:40:02,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 392. [2021-11-20 07:40:02,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 251 states have (on average 1.155378486055777) internal successors, (290), 261 states have internal predecessors, (290), 96 states have call successors, (96), 38 states have call predecessors, (96), 44 states have return successors, (167), 92 states have call predecessors, (167), 93 states have call successors, (167) [2021-11-20 07:40:02,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 553 transitions. [2021-11-20 07:40:02,627 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 553 transitions. Word has length 161 [2021-11-20 07:40:02,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:40:02,628 INFO L470 AbstractCegarLoop]: Abstraction has 392 states and 553 transitions. [2021-11-20 07:40:02,628 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 5.0) internal successors, (75), 14 states have internal predecessors, (75), 5 states have call successors, (22), 5 states have call predecessors, (22), 6 states have return successors, (20), 5 states have call predecessors, (20), 5 states have call successors, (20) [2021-11-20 07:40:02,628 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 553 transitions. [2021-11-20 07:40:02,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2021-11-20 07:40:02,630 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:40:02,631 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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] [2021-11-20 07:40:02,669 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eef7acd8-2fe6-4b7b-9c2a-2780b0ed5e21/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-11-20 07:40:02,845 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eef7acd8-2fe6-4b7b-9c2a-2780b0ed5e21/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:40:02,846 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:40:02,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:40:02,846 INFO L85 PathProgramCache]: Analyzing trace with hash -756527367, now seen corresponding path program 1 times [2021-11-20 07:40:02,846 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:40:02,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236256714] [2021-11-20 07:40:02,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:40:02,847 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:40:02,933 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 07:40:02,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1530889747] [2021-11-20 07:40:02,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:40:02,934 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:40:02,935 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eef7acd8-2fe6-4b7b-9c2a-2780b0ed5e21/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:40:02,935 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eef7acd8-2fe6-4b7b-9c2a-2780b0ed5e21/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:40:02,956 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eef7acd8-2fe6-4b7b-9c2a-2780b0ed5e21/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-11-20 07:40:03,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:40:03,375 INFO L263 TraceCheckSpWp]: Trace formula consists of 2742 conjuncts, 88 conjunts are in the unsatisfiable core [2021-11-20 07:40:03,381 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:40:06,653 WARN L860 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (and (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| (select (select |c_#memory_$Pointer$.offset| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset|)))) (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| (select (select |c_#memory_$Pointer$.base| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset|))) |c_#memory_$Pointer$.base|))) is different from true [2021-11-20 07:41:03,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:41:03,455 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 07:41:03,462 INFO L354 Elim1Store]: treesize reduction 2, result has 33.3 percent of original size [2021-11-20 07:41:03,463 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 1 [2021-11-20 07:41:03,782 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 121 proven. 3 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-11-20 07:41:03,782 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:41:06,887 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_127| Int) (v_DerPreprocessor_6 Int) (v_DerPreprocessor_5 Int)) (let ((.cse0 (+ |c_aws_array_list_ensure_capacity_~list#1.offset| 32))) (or (not (= (select (select (store |c_#memory_$Pointer$.base| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_127| (store (select |c_#memory_$Pointer$.base| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_127|) 0 v_DerPreprocessor_5)) |c_aws_array_list_ensure_capacity_~list#1.base|) .cse0) 0)) (not (= (select (select (store |c_#memory_$Pointer$.offset| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_127| (store (select |c_#memory_$Pointer$.offset| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_127|) 0 v_DerPreprocessor_6)) |c_aws_array_list_ensure_capacity_~list#1.base|) .cse0) 0))))) is different from false [2021-11-20 07:41:06,891 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:41:06,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236256714] [2021-11-20 07:41:06,891 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 07:41:06,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1530889747] [2021-11-20 07:41:06,892 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1530889747] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 07:41:06,892 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-11-20 07:41:06,892 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2021-11-20 07:41:06,892 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144926079] [2021-11-20 07:41:06,892 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-11-20 07:41:06,893 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-20 07:41:06,893 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:41:06,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-20 07:41:06,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=274, Unknown=22, NotChecked=70, Total=420 [2021-11-20 07:41:06,893 INFO L87 Difference]: Start difference. First operand 392 states and 553 transitions. Second operand has 20 states, 18 states have (on average 5.222222222222222) internal successors, (94), 18 states have internal predecessors, (94), 8 states have call successors, (26), 5 states have call predecessors, (26), 6 states have return successors, (24), 7 states have call predecessors, (24), 8 states have call successors, (24) [2021-11-20 07:41:14,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:41:14,050 INFO L93 Difference]: Finished difference Result 676 states and 967 transitions. [2021-11-20 07:41:14,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-20 07:41:14,050 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 18 states have (on average 5.222222222222222) internal successors, (94), 18 states have internal predecessors, (94), 8 states have call successors, (26), 5 states have call predecessors, (26), 6 states have return successors, (24), 7 states have call predecessors, (24), 8 states have call successors, (24) Word has length 172 [2021-11-20 07:41:14,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:41:14,055 INFO L225 Difference]: With dead ends: 676 [2021-11-20 07:41:14,055 INFO L226 Difference]: Without dead ends: 439 [2021-11-20 07:41:14,058 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 233 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 61.7s TimeCoverageRelationStatistics Valid=94, Invalid=492, Unknown=22, NotChecked=94, Total=702 [2021-11-20 07:41:14,058 INFO L933 BasicCegarLoop]: 299 mSDtfsCounter, 102 mSDsluCounter, 1936 mSDsCounter, 0 mSdLazyCounter, 1808 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 2235 SdHoareTripleChecker+Invalid, 3224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 1808 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1336 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2021-11-20 07:41:14,059 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [131 Valid, 2235 Invalid, 3224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 1808 Invalid, 0 Unknown, 1336 Unchecked, 6.5s Time] [2021-11-20 07:41:14,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2021-11-20 07:41:14,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 403. [2021-11-20 07:41:14,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 403 states, 258 states have (on average 1.1550387596899225) internal successors, (298), 268 states have internal predecessors, (298), 99 states have call successors, (99), 40 states have call predecessors, (99), 45 states have return successors, (170), 94 states have call predecessors, (170), 96 states have call successors, (170) [2021-11-20 07:41:14,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 567 transitions. [2021-11-20 07:41:14,095 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 567 transitions. Word has length 172 [2021-11-20 07:41:14,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:41:14,095 INFO L470 AbstractCegarLoop]: Abstraction has 403 states and 567 transitions. [2021-11-20 07:41:14,096 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 18 states have (on average 5.222222222222222) internal successors, (94), 18 states have internal predecessors, (94), 8 states have call successors, (26), 5 states have call predecessors, (26), 6 states have return successors, (24), 7 states have call predecessors, (24), 8 states have call successors, (24) [2021-11-20 07:41:14,096 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 567 transitions. [2021-11-20 07:41:14,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-11-20 07:41:14,098 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:41:14,098 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:41:14,140 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eef7acd8-2fe6-4b7b-9c2a-2780b0ed5e21/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-11-20 07:41:14,321 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eef7acd8-2fe6-4b7b-9c2a-2780b0ed5e21/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-11-20 07:41:14,321 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:41:14,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:41:14,322 INFO L85 PathProgramCache]: Analyzing trace with hash 118296445, now seen corresponding path program 2 times [2021-11-20 07:41:14,322 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:41:14,322 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585365152] [2021-11-20 07:41:14,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:41:14,322 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:41:14,379 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 07:41:14,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [53811684] [2021-11-20 07:41:14,380 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-20 07:41:14,380 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:41:14,380 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eef7acd8-2fe6-4b7b-9c2a-2780b0ed5e21/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:41:14,381 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eef7acd8-2fe6-4b7b-9c2a-2780b0ed5e21/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:41:14,423 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eef7acd8-2fe6-4b7b-9c2a-2780b0ed5e21/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-11-20 07:41:15,192 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-20 07:41:15,192 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 07:41:15,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 2717 conjuncts, 66 conjunts are in the unsatisfiable core [2021-11-20 07:41:15,208 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:41:16,220 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-20 07:41:16,230 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-20 07:41:17,422 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 91 proven. 8 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2021-11-20 07:41:17,422 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:41:21,392 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 6 proven. 41 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2021-11-20 07:41:21,393 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:41:21,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585365152] [2021-11-20 07:41:21,393 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 07:41:21,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [53811684] [2021-11-20 07:41:21,393 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [53811684] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 07:41:21,393 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 07:41:21,393 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 15] total 26 [2021-11-20 07:41:21,393 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812863334] [2021-11-20 07:41:21,393 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 07:41:21,394 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-11-20 07:41:21,394 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:41:21,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-11-20 07:41:21,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=593, Unknown=0, NotChecked=0, Total=650 [2021-11-20 07:41:21,395 INFO L87 Difference]: Start difference. First operand 403 states and 567 transitions. Second operand has 26 states, 22 states have (on average 5.409090909090909) internal successors, (119), 18 states have internal predecessors, (119), 8 states have call successors, (38), 5 states have call predecessors, (38), 9 states have return successors, (39), 10 states have call predecessors, (39), 7 states have call successors, (39) [2021-11-20 07:41:30,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:41:30,757 INFO L93 Difference]: Finished difference Result 668 states and 949 transitions. [2021-11-20 07:41:30,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-20 07:41:30,759 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 22 states have (on average 5.409090909090909) internal successors, (119), 18 states have internal predecessors, (119), 8 states have call successors, (38), 5 states have call predecessors, (38), 9 states have return successors, (39), 10 states have call predecessors, (39), 7 states have call successors, (39) Word has length 165 [2021-11-20 07:41:30,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:41:30,763 INFO L225 Difference]: With dead ends: 668 [2021-11-20 07:41:30,763 INFO L226 Difference]: Without dead ends: 395 [2021-11-20 07:41:30,765 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 348 GetRequests, 303 SyntacticMatches, 4 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=150, Invalid=1656, Unknown=0, NotChecked=0, Total=1806 [2021-11-20 07:41:30,766 INFO L933 BasicCegarLoop]: 278 mSDtfsCounter, 114 mSDsluCounter, 4240 mSDsCounter, 0 mSdLazyCounter, 2187 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 4518 SdHoareTripleChecker+Invalid, 2510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 2187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 237 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2021-11-20 07:41:30,766 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [135 Valid, 4518 Invalid, 2510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 2187 Invalid, 0 Unknown, 237 Unchecked, 7.4s Time] [2021-11-20 07:41:30,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2021-11-20 07:41:30,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 380. [2021-11-20 07:41:30,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 243 states have (on average 1.1563786008230452) internal successors, (281), 250 states have internal predecessors, (281), 95 states have call successors, (95), 38 states have call predecessors, (95), 41 states have return successors, (137), 91 states have call predecessors, (137), 92 states have call successors, (137) [2021-11-20 07:41:30,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 513 transitions. [2021-11-20 07:41:30,795 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 513 transitions. Word has length 165 [2021-11-20 07:41:30,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:41:30,795 INFO L470 AbstractCegarLoop]: Abstraction has 380 states and 513 transitions. [2021-11-20 07:41:30,795 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 22 states have (on average 5.409090909090909) internal successors, (119), 18 states have internal predecessors, (119), 8 states have call successors, (38), 5 states have call predecessors, (38), 9 states have return successors, (39), 10 states have call predecessors, (39), 7 states have call successors, (39) [2021-11-20 07:41:30,796 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 513 transitions. [2021-11-20 07:41:30,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-11-20 07:41:30,798 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:41:30,798 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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] [2021-11-20 07:41:30,834 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eef7acd8-2fe6-4b7b-9c2a-2780b0ed5e21/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-11-20 07:41:31,014 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eef7acd8-2fe6-4b7b-9c2a-2780b0ed5e21/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-11-20 07:41:31,015 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:41:31,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:41:31,015 INFO L85 PathProgramCache]: Analyzing trace with hash -1395585415, now seen corresponding path program 2 times [2021-11-20 07:41:31,015 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:41:31,015 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786464900] [2021-11-20 07:41:31,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:41:31,016 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:41:31,062 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 07:41:31,062 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1582546593] [2021-11-20 07:41:31,062 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-20 07:41:31,063 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:41:31,063 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eef7acd8-2fe6-4b7b-9c2a-2780b0ed5e21/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:41:31,065 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eef7acd8-2fe6-4b7b-9c2a-2780b0ed5e21/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:41:31,074 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eef7acd8-2fe6-4b7b-9c2a-2780b0ed5e21/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-11-20 07:41:31,709 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-20 07:41:31,709 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 07:41:31,719 INFO L263 TraceCheckSpWp]: Trace formula consists of 2706 conjuncts, 98 conjunts are in the unsatisfiable core [2021-11-20 07:41:31,723 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:41:32,957 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2021-11-20 07:41:32,967 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2021-11-20 07:41:36,010 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 41 [2021-11-20 07:41:36,017 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 30 [2021-11-20 07:41:36,029 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 19 [2021-11-20 07:41:36,556 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 85 proven. 8 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2021-11-20 07:41:36,556 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:41:40,487 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 189 treesize of output 171 [2021-11-20 07:41:40,500 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 171 treesize of output 153 [2021-11-20 07:41:40,529 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 153 treesize of output 141 [2021-11-20 07:41:41,921 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-20 07:41:41,921 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 53 treesize of output 56 [2021-11-20 07:41:41,967 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-20 07:41:41,967 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 59 [2021-11-20 07:41:42,671 INFO L354 Elim1Store]: treesize reduction 8, result has 46.7 percent of original size [2021-11-20 07:41:42,671 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 25 [2021-11-20 07:41:44,972 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 9 proven. 39 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2021-11-20 07:41:44,973 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:41:44,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786464900] [2021-11-20 07:41:44,973 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 07:41:44,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1582546593] [2021-11-20 07:41:44,973 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1582546593] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 07:41:44,973 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 07:41:44,973 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 24] total 46 [2021-11-20 07:41:44,973 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121067451] [2021-11-20 07:41:44,973 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 07:41:44,974 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2021-11-20 07:41:44,974 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:41:44,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2021-11-20 07:41:44,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=335, Invalid=1735, Unknown=0, NotChecked=0, Total=2070 [2021-11-20 07:41:44,976 INFO L87 Difference]: Start difference. First operand 380 states and 513 transitions. Second operand has 46 states, 40 states have (on average 3.5) internal successors, (140), 36 states have internal predecessors, (140), 16 states have call successors, (42), 8 states have call predecessors, (42), 12 states have return successors, (39), 16 states have call predecessors, (39), 15 states have call successors, (39) [2021-11-20 07:42:12,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:42:12,743 INFO L93 Difference]: Finished difference Result 660 states and 911 transitions. [2021-11-20 07:42:12,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-11-20 07:42:12,746 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 40 states have (on average 3.5) internal successors, (140), 36 states have internal predecessors, (140), 16 states have call successors, (42), 8 states have call predecessors, (42), 12 states have return successors, (39), 16 states have call predecessors, (39), 15 states have call successors, (39) Word has length 161 [2021-11-20 07:42:12,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:42:12,749 INFO L225 Difference]: With dead ends: 660 [2021-11-20 07:42:12,749 INFO L226 Difference]: Without dead ends: 426 [2021-11-20 07:42:12,753 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 276 SyntacticMatches, 3 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1399 ImplicationChecksByTransitivity, 14.0s TimeCoverageRelationStatistics Valid=918, Invalid=4934, Unknown=0, NotChecked=0, Total=5852 [2021-11-20 07:42:12,753 INFO L933 BasicCegarLoop]: 254 mSDtfsCounter, 575 mSDsluCounter, 2663 mSDsCounter, 0 mSdLazyCounter, 5702 mSolverCounterSat, 499 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 640 SdHoareTripleChecker+Valid, 2917 SdHoareTripleChecker+Invalid, 7587 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 499 IncrementalHoareTripleChecker+Valid, 5702 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1386 IncrementalHoareTripleChecker+Unchecked, 19.5s IncrementalHoareTripleChecker+Time [2021-11-20 07:42:12,754 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [640 Valid, 2917 Invalid, 7587 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [499 Valid, 5702 Invalid, 0 Unknown, 1386 Unchecked, 19.5s Time] [2021-11-20 07:42:12,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426 states. [2021-11-20 07:42:12,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426 to 384. [2021-11-20 07:42:12,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 246 states have (on average 1.1504065040650406) internal successors, (283), 253 states have internal predecessors, (283), 95 states have call successors, (95), 39 states have call predecessors, (95), 42 states have return successors, (137), 91 states have call predecessors, (137), 92 states have call successors, (137) [2021-11-20 07:42:12,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 515 transitions. [2021-11-20 07:42:12,785 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 515 transitions. Word has length 161 [2021-11-20 07:42:12,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:42:12,785 INFO L470 AbstractCegarLoop]: Abstraction has 384 states and 515 transitions. [2021-11-20 07:42:12,786 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 40 states have (on average 3.5) internal successors, (140), 36 states have internal predecessors, (140), 16 states have call successors, (42), 8 states have call predecessors, (42), 12 states have return successors, (39), 16 states have call predecessors, (39), 15 states have call successors, (39) [2021-11-20 07:42:12,786 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 515 transitions. [2021-11-20 07:42:12,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2021-11-20 07:42:12,788 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:42:12,788 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2021-11-20 07:42:12,821 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eef7acd8-2fe6-4b7b-9c2a-2780b0ed5e21/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-11-20 07:42:13,001 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eef7acd8-2fe6-4b7b-9c2a-2780b0ed5e21/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-11-20 07:42:13,001 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:42:13,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:42:13,002 INFO L85 PathProgramCache]: Analyzing trace with hash -1420648395, now seen corresponding path program 1 times [2021-11-20 07:42:13,002 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:42:13,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419346511] [2021-11-20 07:42:13,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:42:13,002 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:42:13,051 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 07:42:13,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1804982177] [2021-11-20 07:42:13,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:42:13,052 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:42:13,052 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eef7acd8-2fe6-4b7b-9c2a-2780b0ed5e21/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:42:13,057 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eef7acd8-2fe6-4b7b-9c2a-2780b0ed5e21/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:42:13,084 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eef7acd8-2fe6-4b7b-9c2a-2780b0ed5e21/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-11-20 07:42:13,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:42:13,556 INFO L263 TraceCheckSpWp]: Trace formula consists of 2731 conjuncts, 143 conjunts are in the unsatisfiable core [2021-11-20 07:42:13,560 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:42:13,811 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-20 07:42:14,273 INFO L354 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2021-11-20 07:42:14,273 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 20 [2021-11-20 07:42:16,999 WARN L860 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| (select (select |c_#memory_$Pointer$.offset| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset|))))) is different from true [2021-11-20 07:43:14,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:43:14,946 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-11-20 07:43:49,263 WARN L860 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (and (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| (select (select |c_#memory_$Pointer$.offset| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset|)))) (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| (select (select |c_#memory_$Pointer$.base| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset|))) |c_#memory_$Pointer$.base|))) is different from true