./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_priority_queue_top_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc0bf69-7570-460a-bab0-b64288f260d1/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc0bf69-7570-460a-bab0-b64288f260d1/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc0bf69-7570-460a-bab0-b64288f260d1/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc0bf69-7570-460a-bab0-b64288f260d1/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_priority_queue_top_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc0bf69-7570-460a-bab0-b64288f260d1/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc0bf69-7570-460a-bab0-b64288f260d1/bin/uautomizer-tPACEb0tL8 --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 1b920ac3045decc1a5a84e4c4a6d200f349784425219a23e0b9ddb547b7159b4 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-e04fb08 [2022-11-16 12:10:24,197 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 12:10:24,200 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 12:10:24,223 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 12:10:24,224 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 12:10:24,225 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 12:10:24,227 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 12:10:24,229 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 12:10:24,231 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 12:10:24,232 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 12:10:24,233 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 12:10:24,234 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 12:10:24,235 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 12:10:24,236 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 12:10:24,237 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 12:10:24,239 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 12:10:24,240 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 12:10:24,241 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 12:10:24,243 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 12:10:24,245 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 12:10:24,247 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 12:10:24,248 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 12:10:24,250 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 12:10:24,251 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 12:10:24,256 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 12:10:24,256 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 12:10:24,257 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 12:10:24,258 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 12:10:24,258 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 12:10:24,260 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 12:10:24,260 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 12:10:24,261 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 12:10:24,262 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 12:10:24,263 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 12:10:24,264 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 12:10:24,264 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 12:10:24,265 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 12:10:24,266 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 12:10:24,266 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 12:10:24,267 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 12:10:24,268 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 12:10:24,269 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc0bf69-7570-460a-bab0-b64288f260d1/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-16 12:10:24,293 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 12:10:24,293 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 12:10:24,294 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 12:10:24,294 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 12:10:24,295 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 12:10:24,295 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 12:10:24,296 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 12:10:24,296 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 12:10:24,296 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 12:10:24,297 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 12:10:24,297 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 12:10:24,297 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 12:10:24,297 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 12:10:24,298 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 12:10:24,298 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 12:10:24,298 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 12:10:24,298 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 12:10:24,299 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 12:10:24,299 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 12:10:24,299 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 12:10:24,299 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 12:10:24,300 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:10:24,300 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 12:10:24,300 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 12:10:24,300 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 12:10:24,301 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 12:10:24,301 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 12:10:24,301 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 12:10:24,301 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 12:10:24,302 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 12:10:24,302 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_bcc0bf69-7570-460a-bab0-b64288f260d1/bin/uautomizer-tPACEb0tL8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc0bf69-7570-460a-bab0-b64288f260d1/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1b920ac3045decc1a5a84e4c4a6d200f349784425219a23e0b9ddb547b7159b4 [2022-11-16 12:10:24,564 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 12:10:24,595 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 12:10:24,600 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 12:10:24,603 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 12:10:24,603 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 12:10:24,605 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc0bf69-7570-460a-bab0-b64288f260d1/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/aws-c-common/aws_priority_queue_top_harness.i [2022-11-16 12:10:24,690 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc0bf69-7570-460a-bab0-b64288f260d1/bin/uautomizer-tPACEb0tL8/data/a7b679d32/242db7c3a850406db57360ef31683cbe/FLAG96d7b88b8 [2022-11-16 12:10:25,523 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:10:25,524 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc0bf69-7570-460a-bab0-b64288f260d1/sv-benchmarks/c/aws-c-common/aws_priority_queue_top_harness.i [2022-11-16 12:10:25,558 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc0bf69-7570-460a-bab0-b64288f260d1/bin/uautomizer-tPACEb0tL8/data/a7b679d32/242db7c3a850406db57360ef31683cbe/FLAG96d7b88b8 [2022-11-16 12:10:25,639 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc0bf69-7570-460a-bab0-b64288f260d1/bin/uautomizer-tPACEb0tL8/data/a7b679d32/242db7c3a850406db57360ef31683cbe [2022-11-16 12:10:25,641 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:10:25,643 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:10:25,644 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:10:25,644 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:10:25,650 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:10:25,650 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:10:25" (1/1) ... [2022-11-16 12:10:25,653 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d88ac8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:10:25, skipping insertion in model container [2022-11-16 12:10:25,653 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:10:25" (1/1) ... [2022-11-16 12:10:25,660 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:10:25,763 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:10:26,157 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc0bf69-7570-460a-bab0-b64288f260d1/sv-benchmarks/c/aws-c-common/aws_priority_queue_top_harness.i[4496,4509] [2022-11-16 12:10:26,167 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc0bf69-7570-460a-bab0-b64288f260d1/sv-benchmarks/c/aws-c-common/aws_priority_queue_top_harness.i[4556,4569] [2022-11-16 12:10:27,022 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-16 12:10:27,092 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:10:27,093 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:10:27,094 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:10:27,095 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:10:27,096 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:10:27,109 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:10:27,110 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:10:27,112 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:10:27,113 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:10:27,484 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-16 12:10:27,485 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-16 12:10:27,486 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-16 12:10:27,487 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-16 12:10:27,489 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-16 12:10:27,490 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-16 12:10:27,490 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-16 12:10:27,491 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-16 12:10:27,492 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-16 12:10:27,493 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-16 12:10:27,646 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:10:27,646 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:10:27,698 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:10:27,734 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 12:10:27,766 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc0bf69-7570-460a-bab0-b64288f260d1/sv-benchmarks/c/aws-c-common/aws_priority_queue_top_harness.i[4496,4509] [2022-11-16 12:10:27,768 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc0bf69-7570-460a-bab0-b64288f260d1/sv-benchmarks/c/aws-c-common/aws_priority_queue_top_harness.i[4556,4569] [2022-11-16 12:10:27,825 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-16 12:10:27,862 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:10:27,863 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:10:27,865 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:10:27,866 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:10:27,867 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:10:27,879 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:10:27,882 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:10:27,886 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:10:27,911 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:10:28,011 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-16 12:10:28,012 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-16 12:10:28,012 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-16 12:10:28,013 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-16 12:10:28,014 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-16 12:10:28,015 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-16 12:10:28,015 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-16 12:10:28,015 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-16 12:10:28,016 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-16 12:10:28,016 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-16 12:10:28,061 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:10:28,061 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:10:28,107 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:10:28,396 INFO L208 MainTranslator]: Completed translation [2022-11-16 12:10:28,396 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:10:28 WrapperNode [2022-11-16 12:10:28,397 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 12:10:28,398 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 12:10:28,398 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 12:10:28,398 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 12:10:28,406 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:10:28" (1/1) ... [2022-11-16 12:10:28,503 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:10:28" (1/1) ... [2022-11-16 12:10:28,592 INFO L138 Inliner]: procedures = 689, calls = 1536, calls flagged for inlining = 55, calls inlined = 11, statements flattened = 719 [2022-11-16 12:10:28,592 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 12:10:28,593 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 12:10:28,593 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 12:10:28,593 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 12:10:28,603 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:10:28" (1/1) ... [2022-11-16 12:10:28,603 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:10:28" (1/1) ... [2022-11-16 12:10:28,624 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:10:28" (1/1) ... [2022-11-16 12:10:28,625 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:10:28" (1/1) ... [2022-11-16 12:10:28,689 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:10:28" (1/1) ... [2022-11-16 12:10:28,694 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:10:28" (1/1) ... [2022-11-16 12:10:28,700 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:10:28" (1/1) ... [2022-11-16 12:10:28,716 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:10:28" (1/1) ... [2022-11-16 12:10:28,724 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 12:10:28,739 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 12:10:28,739 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 12:10:28,739 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 12:10:28,740 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:10:28" (1/1) ... [2022-11-16 12:10:28,747 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:10:28,758 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc0bf69-7570-460a-bab0-b64288f260d1/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:10:28,772 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc0bf69-7570-460a-bab0-b64288f260d1/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 12:10:28,798 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc0bf69-7570-460a-bab0-b64288f260d1/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 12:10:28,814 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2022-11-16 12:10:28,814 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2022-11-16 12:10:28,814 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 12:10:28,814 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2022-11-16 12:10:28,815 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2022-11-16 12:10:28,815 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2022-11-16 12:10:28,815 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2022-11-16 12:10:28,845 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-11-16 12:10:28,845 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-11-16 12:10:28,845 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 12:10:28,845 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2022-11-16 12:10:28,846 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2022-11-16 12:10:28,846 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-16 12:10:28,846 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-16 12:10:28,846 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-16 12:10:28,846 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 12:10:28,846 INFO L130 BoogieDeclarations]: Found specification of procedure save_byte_from_array [2022-11-16 12:10:28,847 INFO L138 BoogieDeclarations]: Found implementation of procedure save_byte_from_array [2022-11-16 12:10:28,847 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-16 12:10:28,847 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 12:10:28,847 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 12:10:28,847 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-11-16 12:10:28,847 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-11-16 12:10:28,847 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2022-11-16 12:10:28,848 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2022-11-16 12:10:28,848 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2022-11-16 12:10:28,848 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2022-11-16 12:10:28,848 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_is_valid [2022-11-16 12:10:28,848 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_is_valid [2022-11-16 12:10:28,848 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2022-11-16 12:10:28,848 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2022-11-16 12:10:28,849 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-16 12:10:28,849 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-16 12:10:28,849 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 12:10:28,849 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-16 12:10:28,849 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-16 12:10:28,849 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2022-11-16 12:10:28,849 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2022-11-16 12:10:28,849 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2022-11-16 12:10:28,850 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2022-11-16 12:10:28,850 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 12:10:28,850 INFO L130 BoogieDeclarations]: Found specification of procedure assert_array_list_equivalence [2022-11-16 12:10:28,850 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_array_list_equivalence [2022-11-16 12:10:28,850 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2022-11-16 12:10:28,851 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2022-11-16 12:10:28,851 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 12:10:29,291 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 12:10:29,293 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 12:10:30,471 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 12:10:30,483 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 12:10:30,484 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-16 12:10:30,486 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:10:30 BoogieIcfgContainer [2022-11-16 12:10:30,486 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 12:10:30,490 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 12:10:30,490 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 12:10:30,494 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 12:10:30,494 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:10:25" (1/3) ... [2022-11-16 12:10:30,495 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30edc0c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:10:30, skipping insertion in model container [2022-11-16 12:10:30,495 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:10:28" (2/3) ... [2022-11-16 12:10:30,496 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30edc0c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:10:30, skipping insertion in model container [2022-11-16 12:10:30,496 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:10:30" (3/3) ... [2022-11-16 12:10:30,501 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_priority_queue_top_harness.i [2022-11-16 12:10:30,539 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 12:10:30,539 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 12:10:30,626 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:10:30,635 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@56b31982, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:10:30,636 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-16 12:10:30,641 INFO L276 IsEmpty]: Start isEmpty. Operand has 192 states, 124 states have (on average 1.2338709677419355) internal successors, (153), 124 states have internal predecessors, (153), 50 states have call successors, (50), 17 states have call predecessors, (50), 17 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2022-11-16 12:10:30,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-11-16 12:10:30,658 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:10:30,659 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 2, 2, 2, 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] [2022-11-16 12:10:30,659 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:10:30,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:10:30,675 INFO L85 PathProgramCache]: Analyzing trace with hash -2080692148, now seen corresponding path program 1 times [2022-11-16 12:10:30,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:10:30,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959904775] [2022-11-16 12:10:30,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:10:30,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:10:31,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:10:31,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 12:10:31,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:10:31,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 12:10:31,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:10:31,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-16 12:10:31,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:10:31,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-16 12:10:31,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:10:31,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-16 12:10:31,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:10:31,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-16 12:10:31,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:10:31,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-16 12:10:31,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:10:31,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-16 12:10:31,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:10:31,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-16 12:10:31,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:10:31,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-16 12:10:31,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:10:31,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-16 12:10:31,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:10:31,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-16 12:10:31,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:10:31,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-16 12:10:31,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:10:31,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-16 12:10:31,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:10:31,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:10:31,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:10:31,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-11-16 12:10:31,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:10:31,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-16 12:10:31,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:10:31,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-11-16 12:10:31,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:10:31,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-16 12:10:31,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:10:31,812 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2022-11-16 12:10:31,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:10:31,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959904775] [2022-11-16 12:10:31,814 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959904775] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:10:31,814 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:10:31,814 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 12:10:31,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398925467] [2022-11-16 12:10:31,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:10:31,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:10:31,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:10:31,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:10:31,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:10:31,864 INFO L87 Difference]: Start difference. First operand has 192 states, 124 states have (on average 1.2338709677419355) internal successors, (153), 124 states have internal predecessors, (153), 50 states have call successors, (50), 17 states have call predecessors, (50), 17 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) Second operand has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 2 states have internal predecessors, (44), 2 states have call successors, (19), 6 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-16 12:10:32,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:10:32,858 INFO L93 Difference]: Finished difference Result 443 states and 653 transitions. [2022-11-16 12:10:32,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:10:32,865 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 2 states have internal predecessors, (44), 2 states have call successors, (19), 6 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 118 [2022-11-16 12:10:32,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:10:32,889 INFO L225 Difference]: With dead ends: 443 [2022-11-16 12:10:32,890 INFO L226 Difference]: Without dead ends: 257 [2022-11-16 12:10:32,900 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:10:32,904 INFO L413 NwaCegarLoop]: 174 mSDtfsCounter, 322 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 211 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 341 SdHoareTripleChecker+Valid, 325 SdHoareTripleChecker+Invalid, 473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 211 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-16 12:10:32,907 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [341 Valid, 325 Invalid, 473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [211 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-16 12:10:32,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2022-11-16 12:10:33,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 187. [2022-11-16 12:10:33,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 119 states have (on average 1.2100840336134453) internal successors, (144), 120 states have internal predecessors, (144), 50 states have call successors, (50), 17 states have call predecessors, (50), 17 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2022-11-16 12:10:33,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 243 transitions. [2022-11-16 12:10:33,009 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 243 transitions. Word has length 118 [2022-11-16 12:10:33,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:10:33,010 INFO L495 AbstractCegarLoop]: Abstraction has 187 states and 243 transitions. [2022-11-16 12:10:33,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 2 states have internal predecessors, (44), 2 states have call successors, (19), 6 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-16 12:10:33,011 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 243 transitions. [2022-11-16 12:10:33,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-11-16 12:10:33,024 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:10:33,025 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 2, 2, 2, 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] [2022-11-16 12:10:33,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 12:10:33,025 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:10:33,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:10:33,026 INFO L85 PathProgramCache]: Analyzing trace with hash 440490954, now seen corresponding path program 1 times [2022-11-16 12:10:33,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:10:33,031 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220220696] [2022-11-16 12:10:33,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:10:33,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:10:33,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:10:33,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 12:10:33,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:10:33,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 12:10:33,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:10:33,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-16 12:10:33,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:10:33,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-16 12:10:33,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:10:33,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-16 12:10:33,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:10:33,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-16 12:10:33,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:10:33,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-16 12:10:33,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:10:33,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-16 12:10:33,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:10:33,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-16 12:10:33,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:10:33,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-16 12:10:33,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:10:33,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-16 12:10:33,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:10:33,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-16 12:10:33,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:10:33,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-16 12:10:33,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:10:33,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-16 12:10:33,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:10:33,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:10:33,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:10:33,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-11-16 12:10:33,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:10:33,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-16 12:10:33,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:10:33,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-11-16 12:10:33,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:10:33,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-16 12:10:33,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:10:33,911 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2022-11-16 12:10:33,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:10:33,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220220696] [2022-11-16 12:10:33,916 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220220696] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:10:33,916 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:10:33,916 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-16 12:10:33,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641234589] [2022-11-16 12:10:33,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:10:33,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-16 12:10:33,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:10:33,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-16 12:10:33,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:10:33,927 INFO L87 Difference]: Start difference. First operand 187 states and 243 transitions. Second operand has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 5 states have internal predecessors, (44), 3 states have call successors, (19), 6 states have call predecessors, (19), 2 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-16 12:10:35,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:10:35,061 INFO L93 Difference]: Finished difference Result 407 states and 561 transitions. [2022-11-16 12:10:35,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 12:10:35,062 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 5 states have internal predecessors, (44), 3 states have call successors, (19), 6 states have call predecessors, (19), 2 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 118 [2022-11-16 12:10:35,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:10:35,065 INFO L225 Difference]: With dead ends: 407 [2022-11-16 12:10:35,065 INFO L226 Difference]: Without dead ends: 257 [2022-11-16 12:10:35,066 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2022-11-16 12:10:35,067 INFO L413 NwaCegarLoop]: 143 mSDtfsCounter, 392 mSDsluCounter, 442 mSDsCounter, 0 mSdLazyCounter, 689 mSolverCounterSat, 224 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 441 SdHoareTripleChecker+Valid, 585 SdHoareTripleChecker+Invalid, 913 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 224 IncrementalHoareTripleChecker+Valid, 689 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:10:35,067 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [441 Valid, 585 Invalid, 913 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [224 Valid, 689 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-16 12:10:35,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2022-11-16 12:10:35,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 187. [2022-11-16 12:10:35,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 119 states have (on average 1.2016806722689075) internal successors, (143), 120 states have internal predecessors, (143), 50 states have call successors, (50), 17 states have call predecessors, (50), 17 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2022-11-16 12:10:35,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 242 transitions. [2022-11-16 12:10:35,114 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 242 transitions. Word has length 118 [2022-11-16 12:10:35,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:10:35,117 INFO L495 AbstractCegarLoop]: Abstraction has 187 states and 242 transitions. [2022-11-16 12:10:35,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 5 states have internal predecessors, (44), 3 states have call successors, (19), 6 states have call predecessors, (19), 2 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-16 12:10:35,117 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 242 transitions. [2022-11-16 12:10:35,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-11-16 12:10:35,125 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:10:35,125 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 3, 3, 3, 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] [2022-11-16 12:10:35,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 12:10:35,128 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:10:35,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:10:35,129 INFO L85 PathProgramCache]: Analyzing trace with hash -1705196580, now seen corresponding path program 1 times [2022-11-16 12:10:35,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:10:35,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70706022] [2022-11-16 12:10:35,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:10:35,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:10:35,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:10:35,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 12:10:35,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:10:35,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 12:10:35,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:10:35,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-16 12:10:35,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:10:35,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-16 12:10:35,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:10:35,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-16 12:10:35,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:10:35,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-16 12:10:35,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:10:35,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-16 12:10:35,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:10:35,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-16 12:10:35,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:10:36,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-16 12:10:36,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:10:36,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-16 12:10:36,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:10:36,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 12:10:36,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:10:36,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-16 12:10:36,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:10:36,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-16 12:10:36,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:10:36,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-11-16 12:10:36,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:10:36,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-11-16 12:10:36,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:10:36,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:10:36,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:10:36,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-11-16 12:10:36,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:10:36,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-11-16 12:10:36,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:10:36,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-11-16 12:10:36,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:10:36,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-11-16 12:10:36,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:10:36,280 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2022-11-16 12:10:36,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:10:36,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70706022] [2022-11-16 12:10:36,281 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70706022] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:10:36,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1942376792] [2022-11-16 12:10:36,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:10:36,281 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:10:36,282 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc0bf69-7570-460a-bab0-b64288f260d1/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:10:36,287 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc0bf69-7570-460a-bab0-b64288f260d1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:10:36,306 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc0bf69-7570-460a-bab0-b64288f260d1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 12:10:36,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:10:36,861 INFO L263 TraceCheckSpWp]: Trace formula consists of 2405 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-16 12:10:36,872 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:10:37,093 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2022-11-16 12:10:37,102 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:10:37,103 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1942376792] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:10:37,103 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:10:37,103 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [12] total 17 [2022-11-16 12:10:37,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797561570] [2022-11-16 12:10:37,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:10:37,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:10:37,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:10:37,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:10:37,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2022-11-16 12:10:37,105 INFO L87 Difference]: Start difference. First operand 187 states and 242 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 4 states have call successors, (20), 2 states have call predecessors, (20), 4 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) [2022-11-16 12:10:37,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:10:37,347 INFO L93 Difference]: Finished difference Result 356 states and 472 transitions. [2022-11-16 12:10:37,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:10:37,348 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 4 states have call successors, (20), 2 states have call predecessors, (20), 4 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) Word has length 126 [2022-11-16 12:10:37,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:10:37,351 INFO L225 Difference]: With dead ends: 356 [2022-11-16 12:10:37,352 INFO L226 Difference]: Without dead ends: 189 [2022-11-16 12:10:37,355 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=294, Unknown=0, NotChecked=0, Total=342 [2022-11-16 12:10:37,358 INFO L413 NwaCegarLoop]: 237 mSDtfsCounter, 78 mSDsluCounter, 1040 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 1277 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 12:10:37,359 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 1277 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 12:10:37,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2022-11-16 12:10:37,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 189. [2022-11-16 12:10:37,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 120 states have (on average 1.2) internal successors, (144), 122 states have internal predecessors, (144), 50 states have call successors, (50), 17 states have call predecessors, (50), 18 states have return successors, (55), 49 states have call predecessors, (55), 49 states have call successors, (55) [2022-11-16 12:10:37,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 249 transitions. [2022-11-16 12:10:37,391 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 249 transitions. Word has length 126 [2022-11-16 12:10:37,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:10:37,392 INFO L495 AbstractCegarLoop]: Abstraction has 189 states and 249 transitions. [2022-11-16 12:10:37,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 4 states have call successors, (20), 2 states have call predecessors, (20), 4 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) [2022-11-16 12:10:37,392 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 249 transitions. [2022-11-16 12:10:37,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-11-16 12:10:37,395 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:10:37,395 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 3, 3, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:10:37,410 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc0bf69-7570-460a-bab0-b64288f260d1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 12:10:37,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc0bf69-7570-460a-bab0-b64288f260d1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:10:37,605 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:10:37,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:10:37,606 INFO L85 PathProgramCache]: Analyzing trace with hash -371731420, now seen corresponding path program 1 times [2022-11-16 12:10:37,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:10:37,606 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324294282] [2022-11-16 12:10:37,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:10:37,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:10:37,696 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:10:37,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [172240456] [2022-11-16 12:10:37,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:10:37,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:10:37,697 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc0bf69-7570-460a-bab0-b64288f260d1/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:10:37,698 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc0bf69-7570-460a-bab0-b64288f260d1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:10:37,718 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc0bf69-7570-460a-bab0-b64288f260d1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 12:10:38,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:10:38,321 INFO L263 TraceCheckSpWp]: Trace formula consists of 2541 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 12:10:38,326 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:10:38,362 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2022-11-16 12:10:38,362 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:10:38,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:10:38,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324294282] [2022-11-16 12:10:38,363 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:10:38,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [172240456] [2022-11-16 12:10:38,363 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [172240456] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:10:38,363 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:10:38,363 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 12:10:38,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796577214] [2022-11-16 12:10:38,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:10:38,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:10:38,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:10:38,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:10:38,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:10:38,366 INFO L87 Difference]: Start difference. First operand 189 states and 249 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-16 12:10:38,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:10:38,408 INFO L93 Difference]: Finished difference Result 344 states and 467 transitions. [2022-11-16 12:10:38,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:10:38,409 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 141 [2022-11-16 12:10:38,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:10:38,414 INFO L225 Difference]: With dead ends: 344 [2022-11-16 12:10:38,417 INFO L226 Difference]: Without dead ends: 194 [2022-11-16 12:10:38,418 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:10:38,419 INFO L413 NwaCegarLoop]: 241 mSDtfsCounter, 10 mSDsluCounter, 472 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 713 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 [2022-11-16 12:10:38,421 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 713 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:10:38,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2022-11-16 12:10:38,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 191. [2022-11-16 12:10:38,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 122 states have (on average 1.1967213114754098) internal successors, (146), 124 states have internal predecessors, (146), 50 states have call successors, (50), 17 states have call predecessors, (50), 18 states have return successors, (55), 49 states have call predecessors, (55), 49 states have call successors, (55) [2022-11-16 12:10:38,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 251 transitions. [2022-11-16 12:10:38,438 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 251 transitions. Word has length 141 [2022-11-16 12:10:38,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:10:38,439 INFO L495 AbstractCegarLoop]: Abstraction has 191 states and 251 transitions. [2022-11-16 12:10:38,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-16 12:10:38,440 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 251 transitions. [2022-11-16 12:10:38,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-11-16 12:10:38,444 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:10:38,445 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 3, 3, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:10:38,460 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc0bf69-7570-460a-bab0-b64288f260d1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 12:10:38,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc0bf69-7570-460a-bab0-b64288f260d1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:10:38,655 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:10:38,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:10:38,656 INFO L85 PathProgramCache]: Analyzing trace with hash 120894754, now seen corresponding path program 1 times [2022-11-16 12:10:38,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:10:38,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463996324] [2022-11-16 12:10:38,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:10:38,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:10:38,772 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:10:38,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [920112220] [2022-11-16 12:10:38,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:10:38,773 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:10:38,773 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc0bf69-7570-460a-bab0-b64288f260d1/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:10:38,774 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc0bf69-7570-460a-bab0-b64288f260d1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:10:38,798 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc0bf69-7570-460a-bab0-b64288f260d1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 12:10:39,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:10:39,369 INFO L263 TraceCheckSpWp]: Trace formula consists of 2546 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 12:10:39,375 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:10:39,476 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2022-11-16 12:10:39,476 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:10:39,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:10:39,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463996324] [2022-11-16 12:10:39,477 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:10:39,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [920112220] [2022-11-16 12:10:39,477 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [920112220] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:10:39,478 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:10:39,478 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:10:39,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728030377] [2022-11-16 12:10:39,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:10:39,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:10:39,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:10:39,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:10:39,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:10:39,480 INFO L87 Difference]: Start difference. First operand 191 states and 251 transitions. Second operand has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 4 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) [2022-11-16 12:10:39,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:10:39,820 INFO L93 Difference]: Finished difference Result 346 states and 457 transitions. [2022-11-16 12:10:39,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:10:39,823 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 4 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) Word has length 141 [2022-11-16 12:10:39,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:10:39,825 INFO L225 Difference]: With dead ends: 346 [2022-11-16 12:10:39,825 INFO L226 Difference]: Without dead ends: 191 [2022-11-16 12:10:39,826 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-11-16 12:10:39,826 INFO L413 NwaCegarLoop]: 197 mSDtfsCounter, 278 mSDsluCounter, 710 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 278 SdHoareTripleChecker+Valid, 907 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 12:10:39,826 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [278 Valid, 907 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 12:10:39,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2022-11-16 12:10:39,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 191. [2022-11-16 12:10:39,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 122 states have (on average 1.1885245901639345) internal successors, (145), 124 states have internal predecessors, (145), 50 states have call successors, (50), 17 states have call predecessors, (50), 18 states have return successors, (55), 49 states have call predecessors, (55), 49 states have call successors, (55) [2022-11-16 12:10:39,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 250 transitions. [2022-11-16 12:10:39,871 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 250 transitions. Word has length 141 [2022-11-16 12:10:39,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:10:39,872 INFO L495 AbstractCegarLoop]: Abstraction has 191 states and 250 transitions. [2022-11-16 12:10:39,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 4 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) [2022-11-16 12:10:39,872 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 250 transitions. [2022-11-16 12:10:39,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-11-16 12:10:39,874 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:10:39,874 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:10:39,887 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc0bf69-7570-460a-bab0-b64288f260d1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-16 12:10:40,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc0bf69-7570-460a-bab0-b64288f260d1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:10:40,085 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:10:40,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:10:40,086 INFO L85 PathProgramCache]: Analyzing trace with hash -1915037087, now seen corresponding path program 1 times [2022-11-16 12:10:40,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:10:40,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297763717] [2022-11-16 12:10:40,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:10:40,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:10:40,168 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:10:40,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [979770151] [2022-11-16 12:10:40,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:10:40,169 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:10:40,169 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc0bf69-7570-460a-bab0-b64288f260d1/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:10:40,170 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc0bf69-7570-460a-bab0-b64288f260d1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:10:40,175 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc0bf69-7570-460a-bab0-b64288f260d1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 12:10:40,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:10:40,788 INFO L263 TraceCheckSpWp]: Trace formula consists of 2618 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 12:10:40,794 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:10:40,940 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-16 12:10:40,940 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:10:40,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:10:40,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297763717] [2022-11-16 12:10:40,941 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:10:40,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [979770151] [2022-11-16 12:10:40,941 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [979770151] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:10:40,941 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:10:40,941 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-16 12:10:40,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737291423] [2022-11-16 12:10:40,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:10:40,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 12:10:40,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:10:40,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 12:10:40,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:10:40,943 INFO L87 Difference]: Start difference. First operand 191 states and 250 transitions. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 5 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (21), 5 states have call predecessors, (21), 5 states have call successors, (21) [2022-11-16 12:10:41,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:10:41,220 INFO L93 Difference]: Finished difference Result 359 states and 474 transitions. [2022-11-16 12:10:41,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 12:10:41,221 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 5 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (21), 5 states have call predecessors, (21), 5 states have call successors, (21) Word has length 157 [2022-11-16 12:10:41,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:10:41,223 INFO L225 Difference]: With dead ends: 359 [2022-11-16 12:10:41,223 INFO L226 Difference]: Without dead ends: 191 [2022-11-16 12:10:41,224 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-11-16 12:10:41,225 INFO L413 NwaCegarLoop]: 213 mSDtfsCounter, 116 mSDsluCounter, 1140 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 1353 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 12:10:41,226 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 1353 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 12:10:41,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2022-11-16 12:10:41,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 191. [2022-11-16 12:10:41,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 122 states have (on average 1.1885245901639345) internal successors, (145), 124 states have internal predecessors, (145), 50 states have call successors, (50), 17 states have call predecessors, (50), 18 states have return successors, (54), 49 states have call predecessors, (54), 49 states have call successors, (54) [2022-11-16 12:10:41,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 249 transitions. [2022-11-16 12:10:41,249 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 249 transitions. Word has length 157 [2022-11-16 12:10:41,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:10:41,250 INFO L495 AbstractCegarLoop]: Abstraction has 191 states and 249 transitions. [2022-11-16 12:10:41,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 5 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (21), 5 states have call predecessors, (21), 5 states have call successors, (21) [2022-11-16 12:10:41,251 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 249 transitions. [2022-11-16 12:10:41,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-11-16 12:10:41,253 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:10:41,253 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:10:41,264 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc0bf69-7570-460a-bab0-b64288f260d1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-11-16 12:10:41,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc0bf69-7570-460a-bab0-b64288f260d1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-16 12:10:41,463 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:10:41,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:10:41,463 INFO L85 PathProgramCache]: Analyzing trace with hash 725110269, now seen corresponding path program 2 times [2022-11-16 12:10:41,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:10:41,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295262671] [2022-11-16 12:10:41,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:10:41,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:10:41,582 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:10:41,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [127274855] [2022-11-16 12:10:41,582 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:10:41,582 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:10:41,583 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc0bf69-7570-460a-bab0-b64288f260d1/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:10:41,584 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc0bf69-7570-460a-bab0-b64288f260d1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:10:41,616 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc0bf69-7570-460a-bab0-b64288f260d1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-16 12:10:42,306 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 12:10:42,306 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:10:42,319 INFO L263 TraceCheckSpWp]: Trace formula consists of 2759 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-16 12:10:42,325 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:10:42,469 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2022-11-16 12:10:42,470 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:10:42,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:10:42,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295262671] [2022-11-16 12:10:42,470 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:10:42,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [127274855] [2022-11-16 12:10:42,471 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [127274855] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:10:42,471 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:10:42,471 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-16 12:10:42,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721990391] [2022-11-16 12:10:42,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:10:42,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-16 12:10:42,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:10:42,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-16 12:10:42,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:10:42,473 INFO L87 Difference]: Start difference. First operand 191 states and 249 transitions. Second operand has 9 states, 8 states have (on average 9.125) internal successors, (73), 8 states have internal predecessors, (73), 5 states have call successors, (23), 3 states have call predecessors, (23), 2 states have return successors, (21), 4 states have call predecessors, (21), 3 states have call successors, (21) [2022-11-16 12:10:42,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:10:42,942 INFO L93 Difference]: Finished difference Result 334 states and 442 transitions. [2022-11-16 12:10:42,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 12:10:42,942 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 9.125) internal successors, (73), 8 states have internal predecessors, (73), 5 states have call successors, (23), 3 states have call predecessors, (23), 2 states have return successors, (21), 4 states have call predecessors, (21), 3 states have call successors, (21) Word has length 172 [2022-11-16 12:10:42,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:10:42,944 INFO L225 Difference]: With dead ends: 334 [2022-11-16 12:10:42,945 INFO L226 Difference]: Without dead ends: 203 [2022-11-16 12:10:42,946 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2022-11-16 12:10:42,947 INFO L413 NwaCegarLoop]: 193 mSDtfsCounter, 270 mSDsluCounter, 1068 mSDsCounter, 0 mSdLazyCounter, 356 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 276 SdHoareTripleChecker+Valid, 1261 SdHoareTripleChecker+Invalid, 439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 12:10:42,947 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [276 Valid, 1261 Invalid, 439 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 356 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-16 12:10:42,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2022-11-16 12:10:42,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 203. [2022-11-16 12:10:42,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 128 states have (on average 1.1875) internal successors, (152), 130 states have internal predecessors, (152), 55 states have call successors, (55), 18 states have call predecessors, (55), 19 states have return successors, (59), 54 states have call predecessors, (59), 54 states have call successors, (59) [2022-11-16 12:10:42,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 266 transitions. [2022-11-16 12:10:42,966 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 266 transitions. Word has length 172 [2022-11-16 12:10:42,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:10:42,966 INFO L495 AbstractCegarLoop]: Abstraction has 203 states and 266 transitions. [2022-11-16 12:10:42,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 9.125) internal successors, (73), 8 states have internal predecessors, (73), 5 states have call successors, (23), 3 states have call predecessors, (23), 2 states have return successors, (21), 4 states have call predecessors, (21), 3 states have call successors, (21) [2022-11-16 12:10:42,967 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 266 transitions. [2022-11-16 12:10:42,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2022-11-16 12:10:42,970 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:10:42,970 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:10:42,991 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc0bf69-7570-460a-bab0-b64288f260d1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-16 12:10:43,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc0bf69-7570-460a-bab0-b64288f260d1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-16 12:10:43,183 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:10:43,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:10:43,184 INFO L85 PathProgramCache]: Analyzing trace with hash -606014439, now seen corresponding path program 1 times [2022-11-16 12:10:43,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:10:43,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846707672] [2022-11-16 12:10:43,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:10:43,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:10:43,273 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:10:43,273 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [558599524] [2022-11-16 12:10:43,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:10:43,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:10:43,274 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc0bf69-7570-460a-bab0-b64288f260d1/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:10:43,275 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc0bf69-7570-460a-bab0-b64288f260d1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:10:43,303 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc0bf69-7570-460a-bab0-b64288f260d1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-16 12:10:44,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:10:44,088 INFO L263 TraceCheckSpWp]: Trace formula consists of 3041 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-16 12:10:44,094 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:10:44,245 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 124 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2022-11-16 12:10:44,245 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:10:44,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:10:44,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846707672] [2022-11-16 12:10:44,245 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:10:44,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [558599524] [2022-11-16 12:10:44,246 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [558599524] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:10:44,246 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:10:44,246 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 12:10:44,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101128760] [2022-11-16 12:10:44,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:10:44,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:10:44,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:10:44,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:10:44,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:10:44,248 INFO L87 Difference]: Start difference. First operand 203 states and 266 transitions. Second operand has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-11-16 12:10:44,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:10:44,624 INFO L93 Difference]: Finished difference Result 385 states and 510 transitions. [2022-11-16 12:10:44,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 12:10:44,625 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 202 [2022-11-16 12:10:44,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:10:44,626 INFO L225 Difference]: With dead ends: 385 [2022-11-16 12:10:44,627 INFO L226 Difference]: Without dead ends: 221 [2022-11-16 12:10:44,627 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:10:44,628 INFO L413 NwaCegarLoop]: 236 mSDtfsCounter, 23 mSDsluCounter, 832 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 1068 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 12:10:44,628 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 1068 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 12:10:44,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2022-11-16 12:10:44,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 207. [2022-11-16 12:10:44,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 132 states have (on average 1.1893939393939394) internal successors, (157), 134 states have internal predecessors, (157), 55 states have call successors, (55), 18 states have call predecessors, (55), 19 states have return successors, (59), 54 states have call predecessors, (59), 54 states have call successors, (59) [2022-11-16 12:10:44,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 271 transitions. [2022-11-16 12:10:44,650 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 271 transitions. Word has length 202 [2022-11-16 12:10:44,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:10:44,651 INFO L495 AbstractCegarLoop]: Abstraction has 207 states and 271 transitions. [2022-11-16 12:10:44,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-11-16 12:10:44,651 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 271 transitions. [2022-11-16 12:10:44,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2022-11-16 12:10:44,655 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:10:44,655 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:10:44,672 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc0bf69-7570-460a-bab0-b64288f260d1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-16 12:10:44,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc0bf69-7570-460a-bab0-b64288f260d1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:10:44,868 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:10:44,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:10:44,868 INFO L85 PathProgramCache]: Analyzing trace with hash 995056667, now seen corresponding path program 1 times [2022-11-16 12:10:44,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:10:44,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910451008] [2022-11-16 12:10:44,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:10:44,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:10:44,956 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:10:44,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [316330162] [2022-11-16 12:10:44,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:10:44,956 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:10:44,957 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc0bf69-7570-460a-bab0-b64288f260d1/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:10:44,958 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc0bf69-7570-460a-bab0-b64288f260d1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:10:44,983 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc0bf69-7570-460a-bab0-b64288f260d1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-16 12:10:45,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:10:45,726 INFO L263 TraceCheckSpWp]: Trace formula consists of 3038 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 12:10:45,732 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:10:45,755 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 124 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2022-11-16 12:10:45,756 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:10:45,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:10:45,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910451008] [2022-11-16 12:10:45,761 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:10:45,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [316330162] [2022-11-16 12:10:45,761 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [316330162] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:10:45,761 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:10:45,761 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 12:10:45,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114061553] [2022-11-16 12:10:45,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:10:45,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:10:45,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:10:45,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:10:45,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:10:45,764 INFO L87 Difference]: Start difference. First operand 207 states and 271 transitions. Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-11-16 12:10:45,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:10:45,814 INFO L93 Difference]: Finished difference Result 379 states and 500 transitions. [2022-11-16 12:10:45,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:10:45,815 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 202 [2022-11-16 12:10:45,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:10:45,817 INFO L225 Difference]: With dead ends: 379 [2022-11-16 12:10:45,817 INFO L226 Difference]: Without dead ends: 211 [2022-11-16 12:10:45,818 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:10:45,821 INFO L413 NwaCegarLoop]: 238 mSDtfsCounter, 3 mSDsluCounter, 471 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 709 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 [2022-11-16 12:10:45,822 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 709 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:10:45,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2022-11-16 12:10:45,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 209. [2022-11-16 12:10:45,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 134 states have (on average 1.1865671641791045) internal successors, (159), 136 states have internal predecessors, (159), 55 states have call successors, (55), 18 states have call predecessors, (55), 19 states have return successors, (59), 54 states have call predecessors, (59), 54 states have call successors, (59) [2022-11-16 12:10:45,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 273 transitions. [2022-11-16 12:10:45,845 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 273 transitions. Word has length 202 [2022-11-16 12:10:45,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:10:45,845 INFO L495 AbstractCegarLoop]: Abstraction has 209 states and 273 transitions. [2022-11-16 12:10:45,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-11-16 12:10:45,846 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 273 transitions. [2022-11-16 12:10:45,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2022-11-16 12:10:45,848 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:10:45,849 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:10:45,864 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc0bf69-7570-460a-bab0-b64288f260d1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-16 12:10:46,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc0bf69-7570-460a-bab0-b64288f260d1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:10:46,060 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:10:46,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:10:46,060 INFO L85 PathProgramCache]: Analyzing trace with hash -1948525411, now seen corresponding path program 1 times [2022-11-16 12:10:46,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:10:46,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946855565] [2022-11-16 12:10:46,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:10:46,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:10:46,147 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:10:46,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [19110121] [2022-11-16 12:10:46,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:10:46,148 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:10:46,148 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc0bf69-7570-460a-bab0-b64288f260d1/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:10:46,150 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc0bf69-7570-460a-bab0-b64288f260d1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:10:46,173 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc0bf69-7570-460a-bab0-b64288f260d1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-16 12:10:46,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:10:46,875 INFO L263 TraceCheckSpWp]: Trace formula consists of 3033 conjuncts, 39 conjunts are in the unsatisfiable core [2022-11-16 12:10:46,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:10:47,142 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2022-11-16 12:10:47,175 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 133 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-11-16 12:10:47,175 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:10:47,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:10:47,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946855565] [2022-11-16 12:10:47,176 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:10:47,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [19110121] [2022-11-16 12:10:47,176 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [19110121] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:10:47,176 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:10:47,176 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-16 12:10:47,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346247531] [2022-11-16 12:10:47,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:10:47,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-16 12:10:47,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:10:47,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-16 12:10:47,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-11-16 12:10:47,178 INFO L87 Difference]: Start difference. First operand 209 states and 273 transitions. Second operand has 11 states, 11 states have (on average 8.545454545454545) internal successors, (94), 11 states have internal predecessors, (94), 6 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (24), 6 states have call predecessors, (24), 6 states have call successors, (24) [2022-11-16 12:10:47,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:10:47,920 INFO L93 Difference]: Finished difference Result 405 states and 542 transitions. [2022-11-16 12:10:47,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-16 12:10:47,921 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.545454545454545) internal successors, (94), 11 states have internal predecessors, (94), 6 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (24), 6 states have call predecessors, (24), 6 states have call successors, (24) Word has length 202 [2022-11-16 12:10:47,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:10:47,922 INFO L225 Difference]: With dead ends: 405 [2022-11-16 12:10:47,922 INFO L226 Difference]: Without dead ends: 235 [2022-11-16 12:10:47,923 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=81, Invalid=299, Unknown=0, NotChecked=0, Total=380 [2022-11-16 12:10:47,924 INFO L413 NwaCegarLoop]: 213 mSDtfsCounter, 127 mSDsluCounter, 1681 mSDsCounter, 0 mSdLazyCounter, 486 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 1894 SdHoareTripleChecker+Invalid, 497 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 486 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-16 12:10:47,925 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 1894 Invalid, 497 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 486 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-16 12:10:47,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2022-11-16 12:10:47,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 216. [2022-11-16 12:10:47,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 140 states have (on average 1.1857142857142857) internal successors, (166), 142 states have internal predecessors, (166), 55 states have call successors, (55), 18 states have call predecessors, (55), 20 states have return successors, (68), 55 states have call predecessors, (68), 54 states have call successors, (68) [2022-11-16 12:10:47,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 289 transitions. [2022-11-16 12:10:47,946 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 289 transitions. Word has length 202 [2022-11-16 12:10:47,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:10:47,949 INFO L495 AbstractCegarLoop]: Abstraction has 216 states and 289 transitions. [2022-11-16 12:10:47,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.545454545454545) internal successors, (94), 11 states have internal predecessors, (94), 6 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (24), 6 states have call predecessors, (24), 6 states have call successors, (24) [2022-11-16 12:10:47,949 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 289 transitions. [2022-11-16 12:10:47,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2022-11-16 12:10:47,954 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:10:47,954 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:10:47,971 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc0bf69-7570-460a-bab0-b64288f260d1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-16 12:10:48,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc0bf69-7570-460a-bab0-b64288f260d1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-16 12:10:48,167 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:10:48,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:10:48,167 INFO L85 PathProgramCache]: Analyzing trace with hash 425026459, now seen corresponding path program 1 times [2022-11-16 12:10:48,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:10:48,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179867388] [2022-11-16 12:10:48,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:10:48,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:10:48,255 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:10:48,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1533247338] [2022-11-16 12:10:48,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:10:48,256 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:10:48,256 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc0bf69-7570-460a-bab0-b64288f260d1/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:10:48,257 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc0bf69-7570-460a-bab0-b64288f260d1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:10:48,271 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc0bf69-7570-460a-bab0-b64288f260d1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-16 12:10:48,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:10:48,990 INFO L263 TraceCheckSpWp]: Trace formula consists of 3036 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-16 12:10:48,996 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:10:49,092 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 124 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2022-11-16 12:10:49,092 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:10:49,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:10:49,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179867388] [2022-11-16 12:10:49,093 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:10:49,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1533247338] [2022-11-16 12:10:49,093 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1533247338] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:10:49,093 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:10:49,094 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:10:49,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285458436] [2022-11-16 12:10:49,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:10:49,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:10:49,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:10:49,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:10:49,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:10:49,096 INFO L87 Difference]: Start difference. First operand 216 states and 289 transitions. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-11-16 12:10:49,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:10:49,163 INFO L93 Difference]: Finished difference Result 403 states and 544 transitions. [2022-11-16 12:10:49,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:10:49,164 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 202 [2022-11-16 12:10:49,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:10:49,167 INFO L225 Difference]: With dead ends: 403 [2022-11-16 12:10:49,167 INFO L226 Difference]: Without dead ends: 226 [2022-11-16 12:10:49,168 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:10:49,169 INFO L413 NwaCegarLoop]: 240 mSDtfsCounter, 9 mSDsluCounter, 707 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 947 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:10:49,169 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 947 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:10:49,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2022-11-16 12:10:49,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 220. [2022-11-16 12:10:49,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 144 states have (on average 1.1805555555555556) internal successors, (170), 146 states have internal predecessors, (170), 55 states have call successors, (55), 18 states have call predecessors, (55), 20 states have return successors, (68), 55 states have call predecessors, (68), 54 states have call successors, (68) [2022-11-16 12:10:49,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 293 transitions. [2022-11-16 12:10:49,194 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 293 transitions. Word has length 202 [2022-11-16 12:10:49,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:10:49,195 INFO L495 AbstractCegarLoop]: Abstraction has 220 states and 293 transitions. [2022-11-16 12:10:49,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-11-16 12:10:49,195 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 293 transitions. [2022-11-16 12:10:49,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2022-11-16 12:10:49,199 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:10:49,199 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:10:49,216 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc0bf69-7570-460a-bab0-b64288f260d1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-16 12:10:49,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc0bf69-7570-460a-bab0-b64288f260d1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:10:49,411 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:10:49,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:10:49,412 INFO L85 PathProgramCache]: Analyzing trace with hash -2039492555, now seen corresponding path program 1 times [2022-11-16 12:10:49,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:10:49,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264528666] [2022-11-16 12:10:49,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:10:49,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:10:49,530 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:10:49,530 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [886022947] [2022-11-16 12:10:49,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:10:49,531 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:10:49,531 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc0bf69-7570-460a-bab0-b64288f260d1/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:10:49,532 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc0bf69-7570-460a-bab0-b64288f260d1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:10:49,536 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc0bf69-7570-460a-bab0-b64288f260d1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-16 12:10:50,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:10:50,261 INFO L263 TraceCheckSpWp]: Trace formula consists of 3033 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 12:10:50,267 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:10:50,369 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 124 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2022-11-16 12:10:50,372 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:10:50,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:10:50,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264528666] [2022-11-16 12:10:50,373 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:10:50,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [886022947] [2022-11-16 12:10:50,373 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [886022947] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:10:50,374 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:10:50,374 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:10:50,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447416072] [2022-11-16 12:10:50,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:10:50,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:10:50,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:10:50,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:10:50,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:10:50,376 INFO L87 Difference]: Start difference. First operand 220 states and 293 transitions. Second operand has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-11-16 12:10:50,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:10:50,658 INFO L93 Difference]: Finished difference Result 401 states and 550 transitions. [2022-11-16 12:10:50,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:10:50,659 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 204 [2022-11-16 12:10:50,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:10:50,661 INFO L225 Difference]: With dead ends: 401 [2022-11-16 12:10:50,661 INFO L226 Difference]: Without dead ends: 220 [2022-11-16 12:10:50,662 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:10:50,663 INFO L413 NwaCegarLoop]: 244 mSDtfsCounter, 10 mSDsluCounter, 651 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 895 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 12:10:50,663 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 895 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 12:10:50,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2022-11-16 12:10:50,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 220. [2022-11-16 12:10:50,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 144 states have (on average 1.1736111111111112) internal successors, (169), 146 states have internal predecessors, (169), 55 states have call successors, (55), 18 states have call predecessors, (55), 20 states have return successors, (68), 55 states have call predecessors, (68), 54 states have call successors, (68) [2022-11-16 12:10:50,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 292 transitions. [2022-11-16 12:10:50,682 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 292 transitions. Word has length 204 [2022-11-16 12:10:50,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:10:50,683 INFO L495 AbstractCegarLoop]: Abstraction has 220 states and 292 transitions. [2022-11-16 12:10:50,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-11-16 12:10:50,683 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 292 transitions. [2022-11-16 12:10:50,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2022-11-16 12:10:50,686 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:10:50,687 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:10:50,699 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc0bf69-7570-460a-bab0-b64288f260d1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-16 12:10:50,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc0bf69-7570-460a-bab0-b64288f260d1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-16 12:10:50,898 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:10:50,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:10:50,899 INFO L85 PathProgramCache]: Analyzing trace with hash 113614263, now seen corresponding path program 1 times [2022-11-16 12:10:50,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:10:50,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538013785] [2022-11-16 12:10:50,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:10:50,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:10:50,986 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:10:50,987 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1925568111] [2022-11-16 12:10:50,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:10:50,987 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:10:50,987 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc0bf69-7570-460a-bab0-b64288f260d1/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:10:50,988 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc0bf69-7570-460a-bab0-b64288f260d1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:10:50,992 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc0bf69-7570-460a-bab0-b64288f260d1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-16 12:10:51,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:10:51,836 INFO L263 TraceCheckSpWp]: Trace formula consists of 3038 conjuncts, 103 conjunts are in the unsatisfiable core [2022-11-16 12:10:51,846 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:10:53,764 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-16 12:10:53,765 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 13 [2022-11-16 12:10:53,779 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-16 12:10:53,779 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 20 [2022-11-16 12:10:53,787 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-16 12:10:53,788 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 16 [2022-11-16 12:10:53,979 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 145 proven. 4 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2022-11-16 12:10:53,979 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:10:57,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:10:57,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538013785] [2022-11-16 12:10:57,024 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:10:57,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1925568111] [2022-11-16 12:10:57,025 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1925568111] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:10:57,025 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:10:57,025 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2022-11-16 12:10:57,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495609140] [2022-11-16 12:10:57,026 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-16 12:10:57,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-16 12:10:57,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:10:57,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-16 12:10:57,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=843, Unknown=0, NotChecked=0, Total=930 [2022-11-16 12:10:57,028 INFO L87 Difference]: Start difference. First operand 220 states and 292 transitions. Second operand has 22 states, 21 states have (on average 4.857142857142857) internal successors, (102), 20 states have internal predecessors, (102), 8 states have call successors, (26), 5 states have call predecessors, (26), 7 states have return successors, (24), 7 states have call predecessors, (24), 8 states have call successors, (24) [2022-11-16 12:11:03,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:11:03,078 INFO L93 Difference]: Finished difference Result 499 states and 686 transitions. [2022-11-16 12:11:03,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-11-16 12:11:03,083 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 4.857142857142857) internal successors, (102), 20 states have internal predecessors, (102), 8 states have call successors, (26), 5 states have call predecessors, (26), 7 states have return successors, (24), 7 states have call predecessors, (24), 8 states have call successors, (24) Word has length 204 [2022-11-16 12:11:03,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:11:03,089 INFO L225 Difference]: With dead ends: 499 [2022-11-16 12:11:03,089 INFO L226 Difference]: Without dead ends: 330 [2022-11-16 12:11:03,095 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 250 SyntacticMatches, 2 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 717 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=354, Invalid=3186, Unknown=0, NotChecked=0, Total=3540 [2022-11-16 12:11:03,098 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 348 mSDsluCounter, 1297 mSDsCounter, 0 mSdLazyCounter, 3334 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 398 SdHoareTripleChecker+Valid, 1443 SdHoareTripleChecker+Invalid, 3784 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 3334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 307 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-11-16 12:11:03,099 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [398 Valid, 1443 Invalid, 3784 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [143 Valid, 3334 Invalid, 0 Unknown, 307 Unchecked, 3.7s Time] [2022-11-16 12:11:03,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2022-11-16 12:11:03,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 245. [2022-11-16 12:11:03,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 162 states have (on average 1.1666666666666667) internal successors, (189), 166 states have internal predecessors, (189), 59 states have call successors, (59), 19 states have call predecessors, (59), 23 states have return successors, (77), 59 states have call predecessors, (77), 58 states have call successors, (77) [2022-11-16 12:11:03,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 325 transitions. [2022-11-16 12:11:03,144 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 325 transitions. Word has length 204 [2022-11-16 12:11:03,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:11:03,145 INFO L495 AbstractCegarLoop]: Abstraction has 245 states and 325 transitions. [2022-11-16 12:11:03,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 4.857142857142857) internal successors, (102), 20 states have internal predecessors, (102), 8 states have call successors, (26), 5 states have call predecessors, (26), 7 states have return successors, (24), 7 states have call predecessors, (24), 8 states have call successors, (24) [2022-11-16 12:11:03,146 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 325 transitions. [2022-11-16 12:11:03,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2022-11-16 12:11:03,147 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:11:03,147 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:11:03,165 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc0bf69-7570-460a-bab0-b64288f260d1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-16 12:11:03,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc0bf69-7570-460a-bab0-b64288f260d1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-16 12:11:03,359 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:11:03,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:11:03,360 INFO L85 PathProgramCache]: Analyzing trace with hash -249329005, now seen corresponding path program 1 times [2022-11-16 12:11:03,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:11:03,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733089787] [2022-11-16 12:11:03,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:11:03,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:11:03,457 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:11:03,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1085185996] [2022-11-16 12:11:03,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:11:03,459 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:11:03,459 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc0bf69-7570-460a-bab0-b64288f260d1/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:11:03,460 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc0bf69-7570-460a-bab0-b64288f260d1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:11:03,485 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc0bf69-7570-460a-bab0-b64288f260d1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-16 12:11:04,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:11:04,290 INFO L263 TraceCheckSpWp]: Trace formula consists of 3083 conjuncts, 150 conjunts are in the unsatisfiable core [2022-11-16 12:11:04,302 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:11:04,312 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 12:11:04,768 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-16 12:11:04,779 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-16 12:11:06,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:11:06,872 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-16 12:11:06,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:11:06,880 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-16 12:11:09,233 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((|v___CPROVER_overflow_mult_~#c~1.base_88| Int) (v_ArrVal_1995 Int)) (and (= (select |c_old(#valid)| |v___CPROVER_overflow_mult_~#c~1.base_88|) 0) (= |c_#valid| (store |c_old(#valid)| |v___CPROVER_overflow_mult_~#c~1.base_88| v_ArrVal_1995)))) (exists ((v_ArrVal_1997 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_1997))) (exists ((v_ArrVal_1996 (Array Int Int))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_1996)))) is different from true [2022-11-16 12:11:09,727 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_2000 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_2000))) (exists ((v_ArrVal_1999 (Array Int Int))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_1999)))) is different from true [2022-11-16 12:11:10,597 INFO L321 Elim1Store]: treesize reduction 30, result has 38.8 percent of original size [2022-11-16 12:11:10,598 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 125 treesize of output 135 [2022-11-16 12:11:10,630 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 12:11:10,630 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 27 [2022-11-16 12:11:10,658 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 12:11:10,659 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 27 [2022-11-16 12:11:16,997 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-16 12:11:16,997 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 10 [2022-11-16 12:11:17,004 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-16 12:11:17,005 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 10 [2022-11-16 12:11:17,207 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 155 proven. 41 refuted. 3 times theorem prover too weak. 43 trivial. 3 not checked. [2022-11-16 12:11:17,207 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:11:19,813 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse6 (+ |c_ULTIMATE.start_aws_priority_queue_top_harness_~#queue~0#1.offset| 80))) (let ((.cse0 (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_aws_priority_queue_top_harness_~#queue~0#1.base|) .cse6)) (.cse3 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_aws_priority_queue_top_harness_~#queue~0#1.base|) .cse6))) (and (forall ((|v_ULTIMATE.start_aws_priority_queue_top_harness_~#old_backpointers~0#1.offset_8| Int) (|v_ULTIMATE.start_aws_priority_queue_top_harness_~#old_backpointers~0#1.base_8| Int)) (let ((.cse1 (+ 32 |v_ULTIMATE.start_aws_priority_queue_top_harness_~#old_backpointers~0#1.offset_8|))) (let ((.cse2 (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_priority_queue_top_harness_~#old_backpointers~0#1.base_8|) .cse1))) (or (not (= .cse0 (select (select |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_aws_priority_queue_top_harness_~#old_backpointers~0#1.base_8|) .cse1))) (not (= .cse2 .cse3)) (= .cse2 0))))) (forall ((|v_ULTIMATE.start_aws_priority_queue_top_harness_~#old_backpointers~0#1.offset_8| Int) (|v_ULTIMATE.start_aws_priority_queue_top_harness_~#old_backpointers~0#1.base_8| Int)) (let ((.cse5 (+ 32 |v_ULTIMATE.start_aws_priority_queue_top_harness_~#old_backpointers~0#1.offset_8|))) (let ((.cse4 (select (select |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_aws_priority_queue_top_harness_~#old_backpointers~0#1.base_8|) .cse5))) (or (not (= .cse0 .cse4)) (not (= (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_priority_queue_top_harness_~#old_backpointers~0#1.base_8|) .cse5) .cse3)) (= .cse4 0)))))))) is different from false [2022-11-16 12:11:19,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:11:19,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733089787] [2022-11-16 12:11:19,862 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:11:19,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1085185996] [2022-11-16 12:11:19,862 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1085185996] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:11:19,862 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:11:19,862 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2022-11-16 12:11:19,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368605745] [2022-11-16 12:11:19,863 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-16 12:11:19,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-11-16 12:11:19,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:11:19,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-11-16 12:11:19,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=1558, Unknown=41, NotChecked=246, Total=1980 [2022-11-16 12:11:19,865 INFO L87 Difference]: Start difference. First operand 245 states and 325 transitions. Second operand has 37 states, 31 states have (on average 3.967741935483871) internal successors, (123), 35 states have internal predecessors, (123), 16 states have call successors, (30), 8 states have call predecessors, (30), 16 states have return successors, (28), 14 states have call predecessors, (28), 16 states have call successors, (28) [2022-11-16 12:11:20,756 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((|v___CPROVER_overflow_mult_~#c~1.base_88| Int) (v_ArrVal_1995 Int)) (and (= (select |c_old(#valid)| |v___CPROVER_overflow_mult_~#c~1.base_88|) 0) (= |c_#valid| (store |c_old(#valid)| |v___CPROVER_overflow_mult_~#c~1.base_88| v_ArrVal_1995)))) (exists ((v_ArrVal_1997 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_1997))) (exists ((v_ArrVal_2000 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_2000))) (exists ((v_ArrVal_1999 (Array Int Int))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_1999))) (exists ((v_ArrVal_1996 (Array Int Int))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_1996)))) is different from true [2022-11-16 12:11:36,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:11:36,683 INFO L93 Difference]: Finished difference Result 520 states and 719 transitions. [2022-11-16 12:11:36,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-11-16 12:11:36,684 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 31 states have (on average 3.967741935483871) internal successors, (123), 35 states have internal predecessors, (123), 16 states have call successors, (30), 8 states have call predecessors, (30), 16 states have return successors, (28), 14 states have call predecessors, (28), 16 states have call successors, (28) Word has length 211 [2022-11-16 12:11:36,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:11:36,687 INFO L225 Difference]: With dead ends: 520 [2022-11-16 12:11:36,687 INFO L226 Difference]: Without dead ends: 335 [2022-11-16 12:11:36,690 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 316 GetRequests, 245 SyntacticMatches, 7 SemanticMatches, 64 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 907 ImplicationChecksByTransitivity, 29.0s TimeCoverageRelationStatistics Valid=279, Invalid=3454, Unknown=65, NotChecked=492, Total=4290 [2022-11-16 12:11:36,691 INFO L413 NwaCegarLoop]: 181 mSDtfsCounter, 169 mSDsluCounter, 2540 mSDsCounter, 0 mSdLazyCounter, 1695 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 2721 SdHoareTripleChecker+Invalid, 4348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 1695 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2531 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-16 12:11:36,691 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [180 Valid, 2721 Invalid, 4348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 1695 Invalid, 0 Unknown, 2531 Unchecked, 1.5s Time] [2022-11-16 12:11:36,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2022-11-16 12:11:36,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 301. [2022-11-16 12:11:36,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 205 states have (on average 1.1609756097560975) internal successors, (238), 212 states have internal predecessors, (238), 64 states have call successors, (64), 22 states have call predecessors, (64), 31 states have return successors, (111), 66 states have call predecessors, (111), 63 states have call successors, (111) [2022-11-16 12:11:36,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 413 transitions. [2022-11-16 12:11:36,725 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 413 transitions. Word has length 211 [2022-11-16 12:11:36,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:11:36,726 INFO L495 AbstractCegarLoop]: Abstraction has 301 states and 413 transitions. [2022-11-16 12:11:36,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 31 states have (on average 3.967741935483871) internal successors, (123), 35 states have internal predecessors, (123), 16 states have call successors, (30), 8 states have call predecessors, (30), 16 states have return successors, (28), 14 states have call predecessors, (28), 16 states have call successors, (28) [2022-11-16 12:11:36,727 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 413 transitions. [2022-11-16 12:11:36,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2022-11-16 12:11:36,729 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:11:36,729 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:11:36,780 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc0bf69-7570-460a-bab0-b64288f260d1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-16 12:11:36,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc0bf69-7570-460a-bab0-b64288f260d1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-16 12:11:36,971 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:11:36,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:11:36,973 INFO L85 PathProgramCache]: Analyzing trace with hash -1128698038, now seen corresponding path program 1 times [2022-11-16 12:11:36,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:11:36,973 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898399982] [2022-11-16 12:11:36,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:11:36,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:11:37,064 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:11:37,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1592058767] [2022-11-16 12:11:37,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:11:37,065 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:11:37,066 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc0bf69-7570-460a-bab0-b64288f260d1/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:11:37,067 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc0bf69-7570-460a-bab0-b64288f260d1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:11:37,091 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc0bf69-7570-460a-bab0-b64288f260d1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-16 12:11:37,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:11:37,833 INFO L263 TraceCheckSpWp]: Trace formula consists of 3134 conjuncts, 36 conjunts are in the unsatisfiable core [2022-11-16 12:11:37,839 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:11:37,992 INFO L134 CoverageAnalysis]: Checked inductivity of 261 backedges. 128 proven. 0 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2022-11-16 12:11:37,993 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:11:37,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:11:37,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898399982] [2022-11-16 12:11:37,993 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:11:37,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1592058767] [2022-11-16 12:11:37,994 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1592058767] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:11:37,994 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:11:37,994 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-11-16 12:11:37,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043192899] [2022-11-16 12:11:37,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:11:37,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-16 12:11:37,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:11:37,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-16 12:11:37,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2022-11-16 12:11:37,997 INFO L87 Difference]: Start difference. First operand 301 states and 413 transitions. Second operand has 14 states, 12 states have (on average 9.916666666666666) internal successors, (119), 11 states have internal predecessors, (119), 4 states have call successors, (30), 2 states have call predecessors, (30), 6 states have return successors, (30), 5 states have call predecessors, (30), 4 states have call successors, (30) [2022-11-16 12:11:38,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:11:38,373 INFO L93 Difference]: Finished difference Result 517 states and 722 transitions. [2022-11-16 12:11:38,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-16 12:11:38,374 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 9.916666666666666) internal successors, (119), 11 states have internal predecessors, (119), 4 states have call successors, (30), 2 states have call predecessors, (30), 6 states have return successors, (30), 5 states have call predecessors, (30), 4 states have call successors, (30) Word has length 235 [2022-11-16 12:11:38,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:11:38,377 INFO L225 Difference]: With dead ends: 517 [2022-11-16 12:11:38,377 INFO L226 Difference]: Without dead ends: 311 [2022-11-16 12:11:38,378 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2022-11-16 12:11:38,379 INFO L413 NwaCegarLoop]: 246 mSDtfsCounter, 12 mSDsluCounter, 2860 mSDsCounter, 0 mSdLazyCounter, 290 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 3106 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 12:11:38,379 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 3106 Invalid, 293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 290 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 12:11:38,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2022-11-16 12:11:38,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 305. [2022-11-16 12:11:38,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 305 states, 208 states have (on average 1.1586538461538463) internal successors, (241), 216 states have internal predecessors, (241), 64 states have call successors, (64), 22 states have call predecessors, (64), 32 states have return successors, (116), 66 states have call predecessors, (116), 63 states have call successors, (116) [2022-11-16 12:11:38,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 421 transitions. [2022-11-16 12:11:38,411 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 421 transitions. Word has length 235 [2022-11-16 12:11:38,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:11:38,412 INFO L495 AbstractCegarLoop]: Abstraction has 305 states and 421 transitions. [2022-11-16 12:11:38,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 9.916666666666666) internal successors, (119), 11 states have internal predecessors, (119), 4 states have call successors, (30), 2 states have call predecessors, (30), 6 states have return successors, (30), 5 states have call predecessors, (30), 4 states have call successors, (30) [2022-11-16 12:11:38,412 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 421 transitions. [2022-11-16 12:11:38,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2022-11-16 12:11:38,414 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:11:38,415 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:11:38,432 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc0bf69-7570-460a-bab0-b64288f260d1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-16 12:11:38,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc0bf69-7570-460a-bab0-b64288f260d1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-16 12:11:38,628 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:11:38,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:11:38,628 INFO L85 PathProgramCache]: Analyzing trace with hash 1543527827, now seen corresponding path program 1 times [2022-11-16 12:11:38,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:11:38,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421804679] [2022-11-16 12:11:38,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:11:38,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:11:38,710 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:11:38,711 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2073754343] [2022-11-16 12:11:38,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:11:38,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:11:38,711 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc0bf69-7570-460a-bab0-b64288f260d1/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:11:38,712 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc0bf69-7570-460a-bab0-b64288f260d1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:11:38,734 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc0bf69-7570-460a-bab0-b64288f260d1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-16 12:11:39,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:11:39,534 INFO L263 TraceCheckSpWp]: Trace formula consists of 3091 conjuncts, 33 conjunts are in the unsatisfiable core [2022-11-16 12:11:39,540 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:11:39,644 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 152 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2022-11-16 12:11:39,645 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:11:39,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:11:39,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421804679] [2022-11-16 12:11:39,645 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:11:39,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2073754343] [2022-11-16 12:11:39,646 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2073754343] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:11:39,646 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:11:39,646 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-16 12:11:39,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407315804] [2022-11-16 12:11:39,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:11:39,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-16 12:11:39,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:11:39,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-16 12:11:39,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-11-16 12:11:39,648 INFO L87 Difference]: Start difference. First operand 305 states and 421 transitions. Second operand has 11 states, 11 states have (on average 9.909090909090908) internal successors, (109), 8 states have internal predecessors, (109), 2 states have call successors, (28), 2 states have call predecessors, (28), 5 states have return successors, (27), 5 states have call predecessors, (27), 2 states have call successors, (27) [2022-11-16 12:11:39,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:11:39,815 INFO L93 Difference]: Finished difference Result 561 states and 784 transitions. [2022-11-16 12:11:39,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-16 12:11:39,816 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 9.909090909090908) internal successors, (109), 8 states have internal predecessors, (109), 2 states have call successors, (28), 2 states have call predecessors, (28), 5 states have return successors, (27), 5 states have call predecessors, (27), 2 states have call successors, (27) Word has length 223 [2022-11-16 12:11:39,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:11:39,819 INFO L225 Difference]: With dead ends: 561 [2022-11-16 12:11:39,819 INFO L226 Difference]: Without dead ends: 315 [2022-11-16 12:11:39,820 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 213 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2022-11-16 12:11:39,821 INFO L413 NwaCegarLoop]: 261 mSDtfsCounter, 13 mSDsluCounter, 2293 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2554 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:11:39,821 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 2554 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:11:39,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2022-11-16 12:11:39,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 303. [2022-11-16 12:11:39,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 207 states have (on average 1.1594202898550725) internal successors, (240), 213 states have internal predecessors, (240), 64 states have call successors, (64), 22 states have call predecessors, (64), 31 states have return successors, (108), 67 states have call predecessors, (108), 63 states have call successors, (108) [2022-11-16 12:11:39,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 412 transitions. [2022-11-16 12:11:39,853 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 412 transitions. Word has length 223 [2022-11-16 12:11:39,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:11:39,854 INFO L495 AbstractCegarLoop]: Abstraction has 303 states and 412 transitions. [2022-11-16 12:11:39,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.909090909090908) internal successors, (109), 8 states have internal predecessors, (109), 2 states have call successors, (28), 2 states have call predecessors, (28), 5 states have return successors, (27), 5 states have call predecessors, (27), 2 states have call successors, (27) [2022-11-16 12:11:39,854 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 412 transitions. [2022-11-16 12:11:39,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2022-11-16 12:11:39,857 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:11:39,857 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:11:39,875 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc0bf69-7570-460a-bab0-b64288f260d1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-16 12:11:40,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc0bf69-7570-460a-bab0-b64288f260d1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-16 12:11:40,070 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:11:40,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:11:40,070 INFO L85 PathProgramCache]: Analyzing trace with hash 1478572234, now seen corresponding path program 2 times [2022-11-16 12:11:40,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:11:40,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735168262] [2022-11-16 12:11:40,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:11:40,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:11:40,160 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:11:40,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [600557445] [2022-11-16 12:11:40,160 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:11:40,160 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:11:40,161 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc0bf69-7570-460a-bab0-b64288f260d1/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:11:40,162 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc0bf69-7570-460a-bab0-b64288f260d1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:11:40,190 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc0bf69-7570-460a-bab0-b64288f260d1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-16 12:11:41,333 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 12:11:41,333 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:11:41,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 3126 conjuncts, 199 conjunts are in the unsatisfiable core [2022-11-16 12:11:41,360 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:11:41,371 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 12:11:41,923 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2022-11-16 12:11:56,652 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:11:56,652 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 39 [2022-11-16 12:11:56,664 INFO L350 Elim1Store]: Elim1 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 12 treesize of output 9 [2022-11-16 12:12:03,063 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 62 [2022-11-16 12:12:03,102 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-16 12:12:03,102 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-16 12:12:03,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:12:03,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:12:03,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:12:03,255 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 51 [2022-11-16 12:12:04,297 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2603 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_2603))) is different from true [2022-11-16 12:12:04,706 WARN L855 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_2604 Int)) (= (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_2604)) |c_#memory_int|)) is different from true [2022-11-16 12:12:04,718 WARN L855 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_2604 Int)) (= (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_2604)) |c_#memory_int|)) is different from true [2022-11-16 12:12:08,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:12:08,665 INFO L321 Elim1Store]: treesize reduction 96, result has 1.0 percent of original size [2022-11-16 12:12:08,665 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 71 treesize of output 1 [2022-11-16 12:12:08,672 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 143 proven. 15 refuted. 4 times theorem prover too weak. 71 trivial. 10 not checked. [2022-11-16 12:12:08,673 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:12:11,412 WARN L833 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_aws_priority_queue_top_harness_~#old_backpointers~0#1.base_9| Int) (|v_ULTIMATE.start_aws_priority_queue_top_harness_~#old_backpointers~0#1.offset_9| Int)) (not (= (select (select |c_#memory_int| |c_ULTIMATE.start_aws_priority_queue_top_harness_~#queue~0#1.base|) (+ 56 |c_ULTIMATE.start_aws_priority_queue_top_harness_~#queue~0#1.offset|)) (select (select |c_#memory_int| |v_ULTIMATE.start_aws_priority_queue_top_harness_~#old_backpointers~0#1.base_9|) (+ |v_ULTIMATE.start_aws_priority_queue_top_harness_~#old_backpointers~0#1.offset_9| 8))))) is different from false [2022-11-16 12:12:11,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:12:11,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735168262] [2022-11-16 12:12:11,429 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:12:11,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [600557445] [2022-11-16 12:12:11,429 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [600557445] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:12:11,429 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:12:11,429 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45] total 45 [2022-11-16 12:12:11,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77112092] [2022-11-16 12:12:11,429 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-16 12:12:11,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-11-16 12:12:11,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:12:11,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-11-16 12:12:11,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=2069, Unknown=29, NotChecked=380, Total=2652 [2022-11-16 12:12:11,431 INFO L87 Difference]: Start difference. First operand 303 states and 412 transitions. Second operand has 45 states, 39 states have (on average 3.230769230769231) internal successors, (126), 41 states have internal predecessors, (126), 17 states have call successors, (32), 8 states have call predecessors, (32), 13 states have return successors, (30), 15 states have call predecessors, (30), 17 states have call successors, (30) [2022-11-16 12:12:11,981 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_2603 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_2603))) (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_2604 Int)) (= (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_2604)) |c_#memory_int|))) is different from true [2022-11-16 12:12:12,004 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_2604 Int)) (= (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_2604)) |c_#memory_int|)) (exists ((|aws_array_list_is_valid_~#required_size~0.base| Int)) (and (exists ((v_ArrVal_2603 (Array Int Int))) (= (store |c_old(#memory_int)| |aws_array_list_is_valid_~#required_size~0.base| v_ArrVal_2603) |c_#memory_int|)) (= (select |c_old(#valid)| |aws_array_list_is_valid_~#required_size~0.base|) 0)))) is different from true [2022-11-16 12:12:12,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:12:12,859 INFO L93 Difference]: Finished difference Result 640 states and 882 transitions. [2022-11-16 12:12:12,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-11-16 12:12:12,860 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 39 states have (on average 3.230769230769231) internal successors, (126), 41 states have internal predecessors, (126), 17 states have call successors, (32), 8 states have call predecessors, (32), 13 states have return successors, (30), 15 states have call predecessors, (30), 17 states have call successors, (30) Word has length 223 [2022-11-16 12:12:12,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:12:12,863 INFO L225 Difference]: With dead ends: 640 [2022-11-16 12:12:12,864 INFO L226 Difference]: Without dead ends: 397 [2022-11-16 12:12:12,866 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 322 GetRequests, 258 SyntacticMatches, 8 SemanticMatches, 56 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 1155 ImplicationChecksByTransitivity, 28.2s TimeCoverageRelationStatistics Valid=200, Invalid=2444, Unknown=32, NotChecked=630, Total=3306 [2022-11-16 12:12:12,871 INFO L413 NwaCegarLoop]: 243 mSDtfsCounter, 80 mSDsluCounter, 2602 mSDsCounter, 0 mSdLazyCounter, 1143 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 2845 SdHoareTripleChecker+Invalid, 4542 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 1143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3267 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:12:12,873 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 2845 Invalid, 4542 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 1143 Invalid, 0 Unknown, 3267 Unchecked, 1.1s Time] [2022-11-16 12:12:12,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397 states. [2022-11-16 12:12:12,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397 to 371. [2022-11-16 12:12:12,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 256 states have (on average 1.16015625) internal successors, (297), 263 states have internal predecessors, (297), 74 states have call successors, (74), 29 states have call predecessors, (74), 40 states have return successors, (142), 78 states have call predecessors, (142), 73 states have call successors, (142) [2022-11-16 12:12:12,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 513 transitions. [2022-11-16 12:12:12,917 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 513 transitions. Word has length 223 [2022-11-16 12:12:12,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:12:12,919 INFO L495 AbstractCegarLoop]: Abstraction has 371 states and 513 transitions. [2022-11-16 12:12:12,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 39 states have (on average 3.230769230769231) internal successors, (126), 41 states have internal predecessors, (126), 17 states have call successors, (32), 8 states have call predecessors, (32), 13 states have return successors, (30), 15 states have call predecessors, (30), 17 states have call successors, (30) [2022-11-16 12:12:12,919 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 513 transitions. [2022-11-16 12:12:12,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2022-11-16 12:12:12,922 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:12:12,922 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:12:12,944 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc0bf69-7570-460a-bab0-b64288f260d1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-16 12:12:13,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc0bf69-7570-460a-bab0-b64288f260d1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:12:13,137 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:12:13,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:12:13,137 INFO L85 PathProgramCache]: Analyzing trace with hash -1799281102, now seen corresponding path program 1 times [2022-11-16 12:12:13,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:12:13,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852511867] [2022-11-16 12:12:13,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:12:13,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:12:13,224 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:12:13,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [417214540] [2022-11-16 12:12:13,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:12:13,225 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:12:13,225 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc0bf69-7570-460a-bab0-b64288f260d1/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:12:13,226 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc0bf69-7570-460a-bab0-b64288f260d1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:12:13,246 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc0bf69-7570-460a-bab0-b64288f260d1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-16 12:12:14,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:12:14,175 INFO L263 TraceCheckSpWp]: Trace formula consists of 3127 conjuncts, 242 conjunts are in the unsatisfiable core [2022-11-16 12:12:14,188 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:12:14,398 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 12:12:15,233 WARN L855 $PredicateComparison]: unable to prove that (and (< 0 |c_#StackHeapBarrier|) (exists ((v_ArrVal_2845 Int)) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_2845)))) (exists ((v_ArrVal_2847 Int)) (= (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_2847)) |c_#memory_$Pointer$.offset|)) (exists ((v_ArrVal_2844 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| v_ArrVal_2844)) |c_#memory_int|))) is different from true [2022-11-16 12:12:15,622 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-16 12:12:15,622 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 50 [2022-11-16 12:12:15,657 INFO L321 Elim1Store]: treesize reduction 33, result has 38.9 percent of original size [2022-11-16 12:12:15,658 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 31 treesize of output 37 [2022-11-16 12:12:15,684 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-16 12:12:15,685 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 44 [2022-11-16 12:12:17,374 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 165 proven. 11 refuted. 0 times theorem prover too weak. 66 trivial. 3 not checked. [2022-11-16 12:12:17,374 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:12:17,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:12:17,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852511867] [2022-11-16 12:12:17,952 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:12:17,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [417214540] [2022-11-16 12:12:17,952 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [417214540] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:12:17,952 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:12:17,952 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2022-11-16 12:12:17,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083467693] [2022-11-16 12:12:17,952 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-16 12:12:17,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-11-16 12:12:17,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:12:17,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-11-16 12:12:17,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=954, Unknown=1, NotChecked=62, Total=1122 [2022-11-16 12:12:17,954 INFO L87 Difference]: Start difference. First operand 371 states and 513 transitions. Second operand has 30 states, 27 states have (on average 4.407407407407407) internal successors, (119), 24 states have internal predecessors, (119), 10 states have call successors, (31), 5 states have call predecessors, (31), 8 states have return successors, (29), 10 states have call predecessors, (29), 10 states have call successors, (29) [2022-11-16 12:12:34,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:12:34,922 INFO L93 Difference]: Finished difference Result 933 states and 1320 transitions. [2022-11-16 12:12:34,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-16 12:12:34,923 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 27 states have (on average 4.407407407407407) internal successors, (119), 24 states have internal predecessors, (119), 10 states have call successors, (31), 5 states have call predecessors, (31), 8 states have return successors, (29), 10 states have call predecessors, (29), 10 states have call successors, (29) Word has length 219 [2022-11-16 12:12:34,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:12:34,927 INFO L225 Difference]: With dead ends: 933 [2022-11-16 12:12:34,928 INFO L226 Difference]: Without dead ends: 672 [2022-11-16 12:12:34,930 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 220 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 675 ImplicationChecksByTransitivity, 15.1s TimeCoverageRelationStatistics Valid=243, Invalid=2616, Unknown=7, NotChecked=104, Total=2970 [2022-11-16 12:12:34,931 INFO L413 NwaCegarLoop]: 208 mSDtfsCounter, 370 mSDsluCounter, 1299 mSDsCounter, 0 mSdLazyCounter, 2918 mSolverCounterSat, 184 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 425 SdHoareTripleChecker+Valid, 1507 SdHoareTripleChecker+Invalid, 4623 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 184 IncrementalHoareTripleChecker+Valid, 2918 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1521 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-11-16 12:12:34,931 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [425 Valid, 1507 Invalid, 4623 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [184 Valid, 2918 Invalid, 0 Unknown, 1521 Unchecked, 3.3s Time] [2022-11-16 12:12:34,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 672 states. [2022-11-16 12:12:34,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 672 to 602. [2022-11-16 12:12:34,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 602 states, 419 states have (on average 1.162291169451074) internal successors, (487), 425 states have internal predecessors, (487), 122 states have call successors, (122), 45 states have call predecessors, (122), 60 states have return successors, (251), 131 states have call predecessors, (251), 120 states have call successors, (251) [2022-11-16 12:12:34,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 602 states to 602 states and 860 transitions. [2022-11-16 12:12:34,997 INFO L78 Accepts]: Start accepts. Automaton has 602 states and 860 transitions. Word has length 219 [2022-11-16 12:12:34,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:12:34,997 INFO L495 AbstractCegarLoop]: Abstraction has 602 states and 860 transitions. [2022-11-16 12:12:34,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 27 states have (on average 4.407407407407407) internal successors, (119), 24 states have internal predecessors, (119), 10 states have call successors, (31), 5 states have call predecessors, (31), 8 states have return successors, (29), 10 states have call predecessors, (29), 10 states have call successors, (29) [2022-11-16 12:12:34,998 INFO L276 IsEmpty]: Start isEmpty. Operand 602 states and 860 transitions. [2022-11-16 12:12:35,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2022-11-16 12:12:35,001 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:12:35,001 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:12:35,014 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc0bf69-7570-460a-bab0-b64288f260d1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-11-16 12:12:35,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc0bf69-7570-460a-bab0-b64288f260d1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-16 12:12:35,214 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:12:35,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:12:35,215 INFO L85 PathProgramCache]: Analyzing trace with hash -837676811, now seen corresponding path program 1 times [2022-11-16 12:12:35,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:12:35,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90968852] [2022-11-16 12:12:35,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:12:35,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:12:35,300 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:12:35,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [748404468] [2022-11-16 12:12:35,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:12:35,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:12:35,301 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc0bf69-7570-460a-bab0-b64288f260d1/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:12:35,302 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc0bf69-7570-460a-bab0-b64288f260d1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:12:35,326 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc0bf69-7570-460a-bab0-b64288f260d1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-16 12:12:36,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:12:36,236 INFO L263 TraceCheckSpWp]: Trace formula consists of 3068 conjuncts, 198 conjunts are in the unsatisfiable core [2022-11-16 12:12:36,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:12:37,216 WARN L855 $PredicateComparison]: unable to prove that (and (< 0 |c_#StackHeapBarrier|) (exists ((v_ArrVal_3061 Int) (v_ArrVal_3063 (Array Int Int)) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_3064 Int)) (and (= (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_3063) |c_#memory_int|) (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_3061)) |c_#memory_$Pointer$.base|) (= |c_#memory_$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| v_ArrVal_3064)))))) is different from true [2022-11-16 12:12:37,255 WARN L855 $PredicateComparison]: unable to prove that (and (< 0 |c_#StackHeapBarrier|) (exists ((v_ArrVal_3063 (Array Int Int)) (v_ArrVal_3061 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_3064 Int)) (and (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_3061))) (= (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_3063) |c_#memory_int|) (= (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_3064)) |c_#memory_$Pointer$.offset|)))) is different from true [2022-11-16 12:12:37,367 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-16 12:12:37,367 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 50 [2022-11-16 12:12:37,402 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-16 12:12:37,402 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 44 [2022-11-16 12:12:37,423 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 12:12:37,423 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 25 [2022-11-16 12:12:37,471 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 6 [2022-11-16 12:12:38,322 INFO L321 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2022-11-16 12:12:38,323 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 7 [2022-11-16 12:12:39,749 WARN L855 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_3067 Int) (v_ArrVal_3068 Int)) (and (= |c_#memory_$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$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_3067))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$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| v_ArrVal_3068))))) is different from true [2022-11-16 12:12:49,006 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 97 proven. 62 refuted. 0 times theorem prover too weak. 35 trivial. 23 not checked. [2022-11-16 12:12:49,006 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:12:51,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:12:51,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90968852] [2022-11-16 12:12:51,600 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:12:51,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [748404468] [2022-11-16 12:12:51,600 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [748404468] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:12:51,600 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:12:51,600 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44] total 44 [2022-11-16 12:12:51,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850354465] [2022-11-16 12:12:51,600 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-16 12:12:51,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-11-16 12:12:51,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:12:51,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-11-16 12:12:51,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=1792, Unknown=55, NotChecked=264, Total=2256 [2022-11-16 12:12:51,603 INFO L87 Difference]: Start difference. First operand 602 states and 860 transitions. Second operand has 44 states, 38 states have (on average 3.4473684210526314) internal successors, (131), 40 states have internal predecessors, (131), 18 states have call successors, (30), 7 states have call predecessors, (30), 14 states have return successors, (28), 15 states have call predecessors, (28), 17 states have call successors, (28) [2022-11-16 12:12:52,973 WARN L855 $PredicateComparison]: unable to prove that (and (< 0 |c_#StackHeapBarrier|) (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_3067 Int) (v_ArrVal_3068 Int)) (and (= |c_#memory_$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$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_3067))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_3068))))) (exists ((v_ArrVal_3061 Int) (v_ArrVal_3063 (Array Int Int)) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_3064 Int)) (and (= (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_3063) |c_#memory_int|) (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_3061)) |c_#memory_$Pointer$.base|) (= |c_#memory_$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| v_ArrVal_3064)))))) is different from true [2022-11-16 12:13:28,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:13:28,604 INFO L93 Difference]: Finished difference Result 1484 states and 2191 transitions. [2022-11-16 12:13:28,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-11-16 12:13:28,605 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 38 states have (on average 3.4473684210526314) internal successors, (131), 40 states have internal predecessors, (131), 18 states have call successors, (30), 7 states have call predecessors, (30), 14 states have return successors, (28), 15 states have call predecessors, (28), 17 states have call successors, (28) Word has length 211 [2022-11-16 12:13:28,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:13:28,613 INFO L225 Difference]: With dead ends: 1484 [2022-11-16 12:13:28,613 INFO L226 Difference]: Without dead ends: 1215 [2022-11-16 12:13:28,617 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 194 SyntacticMatches, 4 SemanticMatches, 84 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 1923 ImplicationChecksByTransitivity, 44.4s TimeCoverageRelationStatistics Valid=414, Invalid=6129, Unknown=115, NotChecked=652, Total=7310 [2022-11-16 12:13:28,618 INFO L413 NwaCegarLoop]: 218 mSDtfsCounter, 518 mSDsluCounter, 2699 mSDsCounter, 0 mSdLazyCounter, 5330 mSolverCounterSat, 210 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 587 SdHoareTripleChecker+Valid, 2917 SdHoareTripleChecker+Invalid, 8883 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 210 IncrementalHoareTripleChecker+Valid, 5330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3343 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2022-11-16 12:13:28,619 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [587 Valid, 2917 Invalid, 8883 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [210 Valid, 5330 Invalid, 0 Unknown, 3343 Unchecked, 5.5s Time] [2022-11-16 12:13:28,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1215 states. [2022-11-16 12:13:28,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1215 to 1094. [2022-11-16 12:13:28,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1094 states, 774 states have (on average 1.1627906976744187) internal successors, (900), 784 states have internal predecessors, (900), 215 states have call successors, (215), 74 states have call predecessors, (215), 104 states have return successors, (529), 235 states have call predecessors, (529), 211 states have call successors, (529) [2022-11-16 12:13:28,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1094 states to 1094 states and 1644 transitions. [2022-11-16 12:13:28,769 INFO L78 Accepts]: Start accepts. Automaton has 1094 states and 1644 transitions. Word has length 211 [2022-11-16 12:13:28,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:13:28,769 INFO L495 AbstractCegarLoop]: Abstraction has 1094 states and 1644 transitions. [2022-11-16 12:13:28,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 38 states have (on average 3.4473684210526314) internal successors, (131), 40 states have internal predecessors, (131), 18 states have call successors, (30), 7 states have call predecessors, (30), 14 states have return successors, (28), 15 states have call predecessors, (28), 17 states have call successors, (28) [2022-11-16 12:13:28,769 INFO L276 IsEmpty]: Start isEmpty. Operand 1094 states and 1644 transitions. [2022-11-16 12:13:28,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2022-11-16 12:13:28,773 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:13:28,773 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:13:28,787 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc0bf69-7570-460a-bab0-b64288f260d1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-11-16 12:13:28,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc0bf69-7570-460a-bab0-b64288f260d1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:13:28,983 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:13:28,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:13:28,983 INFO L85 PathProgramCache]: Analyzing trace with hash 1801140301, now seen corresponding path program 1 times [2022-11-16 12:13:28,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:13:28,983 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816861528] [2022-11-16 12:13:28,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:13:28,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:13:29,060 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:13:29,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1712211608] [2022-11-16 12:13:29,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:13:29,061 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:13:29,061 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc0bf69-7570-460a-bab0-b64288f260d1/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:13:29,062 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc0bf69-7570-460a-bab0-b64288f260d1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:13:29,090 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc0bf69-7570-460a-bab0-b64288f260d1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-11-16 12:13:29,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:13:29,923 INFO L263 TraceCheckSpWp]: Trace formula consists of 3077 conjuncts, 201 conjunts are in the unsatisfiable core [2022-11-16 12:13:29,933 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:13:30,799 WARN L855 $PredicateComparison]: unable to prove that (and (< 0 |c_#StackHeapBarrier|) (exists ((v_ArrVal_3254 (Array Int Int)) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_3255 Int) (v_ArrVal_3252 Int)) (and (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_3252))) (= (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_3255)) |c_#memory_$Pointer$.offset|) (= (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_3254) |c_#memory_int|)))) is different from true [2022-11-16 12:13:30,841 WARN L855 $PredicateComparison]: unable to prove that (and (< 0 |c_#StackHeapBarrier|) (exists ((v_ArrVal_3254 (Array Int Int)) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_3255 Int) (v_ArrVal_3252 Int)) (and (= |c_#memory_$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$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_3255))) (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_3252)) |c_#memory_$Pointer$.base|) (= (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_3254) |c_#memory_int|)))) is different from true [2022-11-16 12:13:30,995 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-16 12:13:30,996 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 50 [2022-11-16 12:13:31,023 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-16 12:13:31,024 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 44 [2022-11-16 12:13:31,043 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 12:13:31,043 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 25 [2022-11-16 12:13:31,090 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 6 [2022-11-16 12:13:32,076 INFO L321 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2022-11-16 12:13:32,077 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 22 [2022-11-16 12:13:32,406 INFO L321 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2022-11-16 12:13:32,408 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 32 [2022-11-16 12:13:33,637 WARN L855 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_3257 (Array Int Int))) (= (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_3257) |c_#memory_int|)) is different from true [2022-11-16 12:13:33,866 WARN L855 $PredicateComparison]: unable to prove that (and (not (= 0 (mod (select (select |c_#memory_int| |c_aws_array_list_is_valid_#in~list.base|) (+ |c_aws_array_list_is_valid_#in~list.offset| 8)) 18446744073709551616))) (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_3257 (Array Int Int))) (= (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_3257) |c_#memory_int|))) is different from true [2022-11-16 12:13:33,934 INFO L321 Elim1Store]: treesize reduction 26, result has 44.7 percent of original size [2022-11-16 12:13:33,934 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 31 treesize of output 44 [2022-11-16 12:13:33,943 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2022-11-16 12:13:38,947 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 16 proven. 110 refuted. 2 times theorem prover too weak. 43 trivial. 48 not checked. [2022-11-16 12:13:38,948 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:13:40,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:13:40,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816861528] [2022-11-16 12:13:40,141 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:13:40,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1712211608] [2022-11-16 12:13:40,141 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1712211608] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:13:40,141 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:13:40,142 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54] total 54 [2022-11-16 12:13:40,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026302147] [2022-11-16 12:13:40,142 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-16 12:13:40,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-11-16 12:13:40,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:13:40,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-11-16 12:13:40,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=3167, Unknown=59, NotChecked=468, Total=3906 [2022-11-16 12:13:40,145 INFO L87 Difference]: Start difference. First operand 1094 states and 1644 transitions. Second operand has 54 states, 49 states have (on average 2.693877551020408) internal successors, (132), 46 states have internal predecessors, (132), 19 states have call successors, (29), 9 states have call predecessors, (29), 17 states have return successors, (28), 18 states have call predecessors, (28), 17 states have call successors, (28) [2022-11-16 12:13:41,759 WARN L855 $PredicateComparison]: unable to prove that (and (< 0 |c_#StackHeapBarrier|) (exists ((v_ArrVal_3254 (Array Int Int)) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_3255 Int) (v_ArrVal_3252 Int)) (and (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_3252))) (= (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_3255)) |c_#memory_$Pointer$.offset|) (= (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_3254) |c_#memory_int|))) (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_3257 (Array Int Int))) (= (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_3257) |c_#memory_int|))) is different from true [2022-11-16 12:14:03,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:14:03,543 INFO L93 Difference]: Finished difference Result 1923 states and 2781 transitions. [2022-11-16 12:14:03,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2022-11-16 12:14:03,544 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 49 states have (on average 2.693877551020408) internal successors, (132), 46 states have internal predecessors, (132), 19 states have call successors, (29), 9 states have call predecessors, (29), 17 states have return successors, (28), 18 states have call predecessors, (28), 17 states have call successors, (28) Word has length 219 [2022-11-16 12:14:03,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:14:03,554 INFO L225 Difference]: With dead ends: 1923 [2022-11-16 12:14:03,554 INFO L226 Difference]: Without dead ends: 1640 [2022-11-16 12:14:03,559 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 172 SyntacticMatches, 5 SemanticMatches, 100 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 2824 ImplicationChecksByTransitivity, 24.5s TimeCoverageRelationStatistics Valid=572, Invalid=8638, Unknown=122, NotChecked=970, Total=10302 [2022-11-16 12:14:03,560 INFO L413 NwaCegarLoop]: 225 mSDtfsCounter, 569 mSDsluCounter, 4074 mSDsCounter, 0 mSdLazyCounter, 6622 mSolverCounterSat, 282 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 626 SdHoareTripleChecker+Valid, 4299 SdHoareTripleChecker+Invalid, 12632 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 282 IncrementalHoareTripleChecker+Valid, 6622 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 5728 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2022-11-16 12:14:03,560 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [626 Valid, 4299 Invalid, 12632 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [282 Valid, 6622 Invalid, 0 Unknown, 5728 Unchecked, 6.3s Time] [2022-11-16 12:14:03,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1640 states. [2022-11-16 12:14:03,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1640 to 1501. [2022-11-16 12:14:03,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1501 states, 1077 states have (on average 1.1652739090064996) internal successors, (1255), 1095 states have internal predecessors, (1255), 275 states have call successors, (275), 108 states have call predecessors, (275), 148 states have return successors, (657), 297 states have call predecessors, (657), 270 states have call successors, (657) [2022-11-16 12:14:03,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1501 states to 1501 states and 2187 transitions. [2022-11-16 12:14:03,718 INFO L78 Accepts]: Start accepts. Automaton has 1501 states and 2187 transitions. Word has length 219 [2022-11-16 12:14:03,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:14:03,719 INFO L495 AbstractCegarLoop]: Abstraction has 1501 states and 2187 transitions. [2022-11-16 12:14:03,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 49 states have (on average 2.693877551020408) internal successors, (132), 46 states have internal predecessors, (132), 19 states have call successors, (29), 9 states have call predecessors, (29), 17 states have return successors, (28), 18 states have call predecessors, (28), 17 states have call successors, (28) [2022-11-16 12:14:03,719 INFO L276 IsEmpty]: Start isEmpty. Operand 1501 states and 2187 transitions. [2022-11-16 12:14:03,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2022-11-16 12:14:03,725 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:14:03,725 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:14:03,742 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc0bf69-7570-460a-bab0-b64288f260d1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-11-16 12:14:03,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc0bf69-7570-460a-bab0-b64288f260d1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:14:03,937 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:14:03,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:14:03,937 INFO L85 PathProgramCache]: Analyzing trace with hash 729170886, now seen corresponding path program 1 times [2022-11-16 12:14:03,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:14:03,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199256249] [2022-11-16 12:14:03,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:14:03,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:14:04,022 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:14:04,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1258219520] [2022-11-16 12:14:04,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:14:04,022 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:14:04,022 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc0bf69-7570-460a-bab0-b64288f260d1/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:14:04,023 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc0bf69-7570-460a-bab0-b64288f260d1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:14:04,032 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc0bf69-7570-460a-bab0-b64288f260d1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-11-16 12:14:04,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:14:04,899 INFO L263 TraceCheckSpWp]: Trace formula consists of 3117 conjuncts, 123 conjunts are in the unsatisfiable core [2022-11-16 12:14:04,906 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:14:25,360 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-16 12:14:25,361 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 20 [2022-11-16 12:14:25,372 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-16 12:14:25,372 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 16 [2022-11-16 12:14:25,383 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-16 12:14:25,383 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 13 [2022-11-16 12:14:25,581 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 160 proven. 9 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-11-16 12:14:25,581 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:14:31,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:14:31,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199256249] [2022-11-16 12:14:31,114 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:14:31,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1258219520] [2022-11-16 12:14:31,115 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1258219520] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:14:31,115 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:14:31,115 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2022-11-16 12:14:31,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044768247] [2022-11-16 12:14:31,115 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-16 12:14:31,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-11-16 12:14:31,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:14:31,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-11-16 12:14:31,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=1203, Unknown=6, NotChecked=0, Total=1332 [2022-11-16 12:14:31,117 INFO L87 Difference]: Start difference. First operand 1501 states and 2187 transitions. Second operand has 27 states, 25 states have (on average 5.32) internal successors, (133), 21 states have internal predecessors, (133), 9 states have call successors, (33), 6 states have call predecessors, (33), 9 states have return successors, (31), 10 states have call predecessors, (31), 9 states have call successors, (31) [2022-11-16 12:15:09,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:15:09,879 INFO L93 Difference]: Finished difference Result 2896 states and 4191 transitions. [2022-11-16 12:15:09,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-11-16 12:15:09,880 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 25 states have (on average 5.32) internal successors, (133), 21 states have internal predecessors, (133), 9 states have call successors, (33), 6 states have call predecessors, (33), 9 states have return successors, (31), 10 states have call predecessors, (31), 9 states have call successors, (31) Word has length 231 [2022-11-16 12:15:09,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:15:09,893 INFO L225 Difference]: With dead ends: 2896 [2022-11-16 12:15:09,893 INFO L226 Difference]: Without dead ends: 1999 [2022-11-16 12:15:09,900 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 352 GetRequests, 287 SyntacticMatches, 2 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 961 ImplicationChecksByTransitivity, 60.0s TimeCoverageRelationStatistics Valid=357, Invalid=3780, Unknown=23, NotChecked=0, Total=4160 [2022-11-16 12:15:09,901 INFO L413 NwaCegarLoop]: 172 mSDtfsCounter, 275 mSDsluCounter, 1401 mSDsCounter, 0 mSdLazyCounter, 2286 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 316 SdHoareTripleChecker+Valid, 1573 SdHoareTripleChecker+Invalid, 2718 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 2286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 345 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-16 12:15:09,901 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [316 Valid, 1573 Invalid, 2718 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 2286 Invalid, 0 Unknown, 345 Unchecked, 2.5s Time] [2022-11-16 12:15:09,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1999 states. [2022-11-16 12:15:10,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1999 to 1628. [2022-11-16 12:15:10,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1628 states, 1184 states have (on average 1.1630067567567568) internal successors, (1377), 1206 states have internal predecessors, (1377), 286 states have call successors, (286), 112 states have call predecessors, (286), 157 states have return successors, (709), 309 states have call predecessors, (709), 281 states have call successors, (709) [2022-11-16 12:15:10,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1628 states to 1628 states and 2372 transitions. [2022-11-16 12:15:10,084 INFO L78 Accepts]: Start accepts. Automaton has 1628 states and 2372 transitions. Word has length 231 [2022-11-16 12:15:10,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:15:10,085 INFO L495 AbstractCegarLoop]: Abstraction has 1628 states and 2372 transitions. [2022-11-16 12:15:10,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 25 states have (on average 5.32) internal successors, (133), 21 states have internal predecessors, (133), 9 states have call successors, (33), 6 states have call predecessors, (33), 9 states have return successors, (31), 10 states have call predecessors, (31), 9 states have call successors, (31) [2022-11-16 12:15:10,085 INFO L276 IsEmpty]: Start isEmpty. Operand 1628 states and 2372 transitions. [2022-11-16 12:15:10,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2022-11-16 12:15:10,091 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:15:10,091 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:15:10,102 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc0bf69-7570-460a-bab0-b64288f260d1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2022-11-16 12:15:10,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc0bf69-7570-460a-bab0-b64288f260d1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2022-11-16 12:15:10,302 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:15:10,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:15:10,302 INFO L85 PathProgramCache]: Analyzing trace with hash 1324160482, now seen corresponding path program 1 times [2022-11-16 12:15:10,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:15:10,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911247278] [2022-11-16 12:15:10,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:15:10,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:15:10,380 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:15:10,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1221774528] [2022-11-16 12:15:10,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:15:10,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:15:10,381 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc0bf69-7570-460a-bab0-b64288f260d1/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:15:10,382 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc0bf69-7570-460a-bab0-b64288f260d1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:15:10,392 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc0bf69-7570-460a-bab0-b64288f260d1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-11-16 12:15:11,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:15:11,355 INFO L263 TraceCheckSpWp]: Trace formula consists of 3149 conjuncts, 102 conjunts are in the unsatisfiable core [2022-11-16 12:15:11,363 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:15:11,552 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-16 12:15:11,554 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-16 12:15:13,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:15:13,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:15:13,800 INFO L321 Elim1Store]: treesize reduction 64, result has 30.4 percent of original size [2022-11-16 12:15:13,800 INFO L350 Elim1Store]: Elim1 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 2 case distinctions, treesize of input 51 treesize of output 70 [2022-11-16 12:15:13,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:15:13,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:15:13,850 INFO L321 Elim1Store]: treesize reduction 64, result has 30.4 percent of original size [2022-11-16 12:15:13,851 INFO L350 Elim1Store]: Elim1 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 2 case distinctions, treesize of input 51 treesize of output 70 [2022-11-16 12:15:14,501 WARN L855 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_3677 Int) (v_ArrVal_3675 Int)) (and (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_3677)) |c_#memory_$Pointer$.base|) (= |c_#memory_$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| v_ArrVal_3675))))) is different from true [2022-11-16 12:15:23,212 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 162 proven. 3 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2022-11-16 12:15:23,213 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:15:25,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:15:25,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911247278] [2022-11-16 12:15:25,580 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:15:25,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1221774528] [2022-11-16 12:15:25,580 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1221774528] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:15:25,580 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:15:25,580 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2022-11-16 12:15:25,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281133256] [2022-11-16 12:15:25,581 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-16 12:15:25,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-16 12:15:25,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:15:25,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-16 12:15:25,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=384, Unknown=21, NotChecked=40, Total=506 [2022-11-16 12:15:25,582 INFO L87 Difference]: Start difference. First operand 1628 states and 2372 transitions. Second operand has 22 states, 19 states have (on average 6.578947368421052) internal successors, (125), 21 states have internal predecessors, (125), 11 states have call successors, (32), 5 states have call predecessors, (32), 7 states have return successors, (30), 9 states have call predecessors, (30), 10 states have call successors, (30) [2022-11-16 12:15:27,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:15:27,666 INFO L93 Difference]: Finished difference Result 3129 states and 4673 transitions. [2022-11-16 12:15:27,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-16 12:15:27,669 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 19 states have (on average 6.578947368421052) internal successors, (125), 21 states have internal predecessors, (125), 11 states have call successors, (32), 5 states have call predecessors, (32), 7 states have return successors, (30), 9 states have call predecessors, (30), 10 states have call successors, (30) Word has length 224 [2022-11-16 12:15:27,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:15:27,683 INFO L225 Difference]: With dead ends: 3129 [2022-11-16 12:15:27,683 INFO L226 Difference]: Without dead ends: 1810 [2022-11-16 12:15:27,690 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 231 SyntacticMatches, 3 SemanticMatches, 26 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 13.7s TimeCoverageRelationStatistics Valid=93, Invalid=592, Unknown=21, NotChecked=50, Total=756 [2022-11-16 12:15:27,691 INFO L413 NwaCegarLoop]: 175 mSDtfsCounter, 109 mSDsluCounter, 1708 mSDsCounter, 0 mSdLazyCounter, 1573 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 1883 SdHoareTripleChecker+Invalid, 3509 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 1573 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1880 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-16 12:15:27,691 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 1883 Invalid, 3509 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 1573 Invalid, 0 Unknown, 1880 Unchecked, 1.5s Time] [2022-11-16 12:15:27,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1810 states. [2022-11-16 12:15:27,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1810 to 1698. [2022-11-16 12:15:27,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1698 states, 1227 states have (on average 1.1605541972290139) internal successors, (1424), 1249 states have internal predecessors, (1424), 305 states have call successors, (305), 124 states have call predecessors, (305), 165 states have return successors, (734), 324 states have call predecessors, (734), 300 states have call successors, (734) [2022-11-16 12:15:27,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1698 states to 1698 states and 2463 transitions. [2022-11-16 12:15:27,876 INFO L78 Accepts]: Start accepts. Automaton has 1698 states and 2463 transitions. Word has length 224 [2022-11-16 12:15:27,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:15:27,877 INFO L495 AbstractCegarLoop]: Abstraction has 1698 states and 2463 transitions. [2022-11-16 12:15:27,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 19 states have (on average 6.578947368421052) internal successors, (125), 21 states have internal predecessors, (125), 11 states have call successors, (32), 5 states have call predecessors, (32), 7 states have return successors, (30), 9 states have call predecessors, (30), 10 states have call successors, (30) [2022-11-16 12:15:27,877 INFO L276 IsEmpty]: Start isEmpty. Operand 1698 states and 2463 transitions. [2022-11-16 12:15:27,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2022-11-16 12:15:27,883 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:15:27,883 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:15:27,903 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc0bf69-7570-460a-bab0-b64288f260d1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-11-16 12:15:28,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc0bf69-7570-460a-bab0-b64288f260d1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-11-16 12:15:28,096 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:15:28,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:15:28,097 INFO L85 PathProgramCache]: Analyzing trace with hash -410438404, now seen corresponding path program 1 times [2022-11-16 12:15:28,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:15:28,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448535988] [2022-11-16 12:15:28,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:15:28,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:15:28,196 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:15:28,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1073988001] [2022-11-16 12:15:28,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:15:28,196 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:15:28,197 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc0bf69-7570-460a-bab0-b64288f260d1/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:15:28,198 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc0bf69-7570-460a-bab0-b64288f260d1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:15:28,218 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc0bf69-7570-460a-bab0-b64288f260d1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-11-16 12:15:29,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:15:29,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 3152 conjuncts, 157 conjunts are in the unsatisfiable core [2022-11-16 12:15:29,144 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:15:30,138 WARN L855 $PredicateComparison]: unable to prove that (and (< 0 |c_#StackHeapBarrier|) (exists ((v_ArrVal_3928 (Array Int Int)) (v_ArrVal_3929 (Array Int Int)) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_3930 (Array Int Int))) (and (= |c_#memory_int| (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_3930)) (= (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_3929) |c_#memory_$Pointer$.offset|) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_3928))))) is different from true [2022-11-16 12:15:30,665 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 12:15:30,665 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 42 [2022-11-16 12:15:30,686 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 12:15:30,686 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 40 [2022-11-16 12:15:30,706 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 12:15:30,707 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 25 [2022-11-16 12:15:30,749 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 6 [2022-11-16 12:15:30,759 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2022-11-16 12:15:30,761 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-16 12:15:33,855 INFO L321 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2022-11-16 12:15:33,856 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 7 [2022-11-16 12:15:34,288 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-16 12:15:34,288 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 10 [2022-11-16 12:15:34,292 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-16 12:15:34,292 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 10 [2022-11-16 12:15:34,424 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 160 proven. 26 refuted. 0 times theorem prover too weak. 54 trivial. 3 not checked. [2022-11-16 12:15:34,425 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:15:36,942 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse6 (+ |c_ULTIMATE.start_aws_priority_queue_top_harness_~#queue~0#1.offset| 80))) (let ((.cse1 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_aws_priority_queue_top_harness_~#queue~0#1.base|) .cse6)) (.cse3 (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_aws_priority_queue_top_harness_~#queue~0#1.base|) .cse6))) (and (forall ((|v_ULTIMATE.start_aws_priority_queue_top_harness_~#old_backpointers~0#1.base_11| Int) (|v_ULTIMATE.start_aws_priority_queue_top_harness_~#old_backpointers~0#1.offset_11| Int)) (let ((.cse0 (+ 32 |v_ULTIMATE.start_aws_priority_queue_top_harness_~#old_backpointers~0#1.offset_11|))) (let ((.cse2 (select (select |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_aws_priority_queue_top_harness_~#old_backpointers~0#1.base_11|) .cse0))) (or (not (= (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_priority_queue_top_harness_~#old_backpointers~0#1.base_11|) .cse0) .cse1)) (not (= .cse2 .cse3)) (= .cse2 0))))) (forall ((|v_ULTIMATE.start_aws_priority_queue_top_harness_~#old_backpointers~0#1.base_11| Int) (|v_ULTIMATE.start_aws_priority_queue_top_harness_~#old_backpointers~0#1.offset_11| Int)) (let ((.cse5 (+ 32 |v_ULTIMATE.start_aws_priority_queue_top_harness_~#old_backpointers~0#1.offset_11|))) (let ((.cse4 (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_priority_queue_top_harness_~#old_backpointers~0#1.base_11|) .cse5))) (or (= .cse4 0) (not (= .cse4 .cse1)) (not (= (select (select |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_aws_priority_queue_top_harness_~#old_backpointers~0#1.base_11|) .cse5) .cse3))))))))) is different from false [2022-11-16 12:15:49,330 WARN L233 SmtUtils]: Spent 12.05s on a formula simplification. DAG size of input: 46 DAG size of output: 45 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 12:15:49,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:15:49,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448535988] [2022-11-16 12:15:49,332 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:15:49,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1073988001] [2022-11-16 12:15:49,332 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1073988001] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:15:49,332 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:15:49,332 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2022-11-16 12:15:49,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155136373] [2022-11-16 12:15:49,333 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-16 12:15:49,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-11-16 12:15:49,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:15:49,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-11-16 12:15:49,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=1721, Unknown=24, NotChecked=170, Total=2070 [2022-11-16 12:15:49,335 INFO L87 Difference]: Start difference. First operand 1698 states and 2463 transitions. Second operand has 37 states, 34 states have (on average 3.676470588235294) internal successors, (125), 31 states have internal predecessors, (125), 13 states have call successors, (32), 7 states have call predecessors, (32), 11 states have return successors, (30), 12 states have call predecessors, (30), 13 states have call successors, (30) [2022-11-16 12:16:09,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:16:09,785 INFO L93 Difference]: Finished difference Result 2958 states and 4276 transitions. [2022-11-16 12:16:09,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-11-16 12:16:09,786 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 34 states have (on average 3.676470588235294) internal successors, (125), 31 states have internal predecessors, (125), 13 states have call successors, (32), 7 states have call predecessors, (32), 11 states have return successors, (30), 12 states have call predecessors, (30), 13 states have call successors, (30) Word has length 224 [2022-11-16 12:16:09,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:16:09,799 INFO L225 Difference]: With dead ends: 2958 [2022-11-16 12:16:09,799 INFO L226 Difference]: Without dead ends: 2630 [2022-11-16 12:16:09,804 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 337 GetRequests, 264 SyntacticMatches, 1 SemanticMatches, 72 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 1317 ImplicationChecksByTransitivity, 32.4s TimeCoverageRelationStatistics Valid=396, Invalid=4659, Unknown=65, NotChecked=282, Total=5402 [2022-11-16 12:16:09,804 INFO L413 NwaCegarLoop]: 229 mSDtfsCounter, 390 mSDsluCounter, 3363 mSDsCounter, 0 mSdLazyCounter, 5622 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 454 SdHoareTripleChecker+Valid, 3592 SdHoareTripleChecker+Invalid, 9117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 5622 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3371 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:16:09,805 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [454 Valid, 3592 Invalid, 9117 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [124 Valid, 5622 Invalid, 0 Unknown, 3371 Unchecked, 6.0s Time] [2022-11-16 12:16:09,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2630 states. [2022-11-16 12:16:10,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2630 to 2074. [2022-11-16 12:16:10,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2074 states, 1494 states have (on average 1.1606425702811245) internal successors, (1734), 1521 states have internal predecessors, (1734), 373 states have call successors, (373), 159 states have call predecessors, (373), 206 states have return successors, (897), 393 states have call predecessors, (897), 367 states have call successors, (897) [2022-11-16 12:16:10,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2074 states to 2074 states and 3004 transitions. [2022-11-16 12:16:10,036 INFO L78 Accepts]: Start accepts. Automaton has 2074 states and 3004 transitions. Word has length 224 [2022-11-16 12:16:10,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:16:10,037 INFO L495 AbstractCegarLoop]: Abstraction has 2074 states and 3004 transitions. [2022-11-16 12:16:10,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 34 states have (on average 3.676470588235294) internal successors, (125), 31 states have internal predecessors, (125), 13 states have call successors, (32), 7 states have call predecessors, (32), 11 states have return successors, (30), 12 states have call predecessors, (30), 13 states have call successors, (30) [2022-11-16 12:16:10,038 INFO L276 IsEmpty]: Start isEmpty. Operand 2074 states and 3004 transitions. [2022-11-16 12:16:10,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2022-11-16 12:16:10,044 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:16:10,044 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:16:10,063 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc0bf69-7570-460a-bab0-b64288f260d1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-11-16 12:16:10,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc0bf69-7570-460a-bab0-b64288f260d1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:16:10,259 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:16:10,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:16:10,259 INFO L85 PathProgramCache]: Analyzing trace with hash 1438231798, now seen corresponding path program 1 times [2022-11-16 12:16:10,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:16:10,259 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69280497] [2022-11-16 12:16:10,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:16:10,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:16:10,329 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:16:10,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1485851790] [2022-11-16 12:16:10,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:16:10,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:16:10,330 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc0bf69-7570-460a-bab0-b64288f260d1/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:16:10,331 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc0bf69-7570-460a-bab0-b64288f260d1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:16:10,347 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc0bf69-7570-460a-bab0-b64288f260d1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-11-16 12:16:11,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:11,240 INFO L263 TraceCheckSpWp]: Trace formula consists of 3081 conjuncts, 35 conjunts are in the unsatisfiable core [2022-11-16 12:16:11,244 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:16:11,326 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 141 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-11-16 12:16:11,326 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:16:11,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:16:11,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69280497] [2022-11-16 12:16:11,327 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:16:11,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1485851790] [2022-11-16 12:16:11,327 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1485851790] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:16:11,327 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:16:11,327 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 12:16:11,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527890045] [2022-11-16 12:16:11,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:16:11,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 12:16:11,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:16:11,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 12:16:11,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:16:11,330 INFO L87 Difference]: Start difference. First operand 2074 states and 3004 transitions. Second operand has 10 states, 9 states have (on average 12.444444444444445) internal successors, (112), 8 states have internal predecessors, (112), 3 states have call successors, (28), 2 states have call predecessors, (28), 5 states have return successors, (26), 4 states have call predecessors, (26), 3 states have call successors, (26) [2022-11-16 12:16:11,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:16:11,695 INFO L93 Difference]: Finished difference Result 4018 states and 5821 transitions. [2022-11-16 12:16:11,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 12:16:11,696 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 12.444444444444445) internal successors, (112), 8 states have internal predecessors, (112), 3 states have call successors, (28), 2 states have call predecessors, (28), 5 states have return successors, (26), 4 states have call predecessors, (26), 3 states have call successors, (26) Word has length 225 [2022-11-16 12:16:11,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:16:11,710 INFO L225 Difference]: With dead ends: 4018 [2022-11-16 12:16:11,711 INFO L226 Difference]: Without dead ends: 2160 [2022-11-16 12:16:11,720 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2022-11-16 12:16:11,721 INFO L413 NwaCegarLoop]: 237 mSDtfsCounter, 5 mSDsluCounter, 1838 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 2075 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:16:11,722 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 2075 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:16:11,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2160 states. [2022-11-16 12:16:11,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2160 to 2094. [2022-11-16 12:16:12,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2094 states, 1507 states have (on average 1.159256801592568) internal successors, (1747), 1539 states have internal predecessors, (1747), 373 states have call successors, (373), 159 states have call predecessors, (373), 213 states have return successors, (922), 395 states have call predecessors, (922), 367 states have call successors, (922) [2022-11-16 12:16:12,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2094 states to 2094 states and 3042 transitions. [2022-11-16 12:16:12,024 INFO L78 Accepts]: Start accepts. Automaton has 2094 states and 3042 transitions. Word has length 225 [2022-11-16 12:16:12,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:16:12,024 INFO L495 AbstractCegarLoop]: Abstraction has 2094 states and 3042 transitions. [2022-11-16 12:16:12,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 12.444444444444445) internal successors, (112), 8 states have internal predecessors, (112), 3 states have call successors, (28), 2 states have call predecessors, (28), 5 states have return successors, (26), 4 states have call predecessors, (26), 3 states have call successors, (26) [2022-11-16 12:16:12,025 INFO L276 IsEmpty]: Start isEmpty. Operand 2094 states and 3042 transitions. [2022-11-16 12:16:12,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2022-11-16 12:16:12,032 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:16:12,032 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:16:12,044 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc0bf69-7570-460a-bab0-b64288f260d1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-11-16 12:16:12,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc0bf69-7570-460a-bab0-b64288f260d1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:16:12,244 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:16:12,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:16:12,245 INFO L85 PathProgramCache]: Analyzing trace with hash 1799908827, now seen corresponding path program 1 times [2022-11-16 12:16:12,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:16:12,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200562444] [2022-11-16 12:16:12,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:16:12,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:16:12,320 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:16:12,322 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [362229707] [2022-11-16 12:16:12,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:16:12,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:16:12,323 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc0bf69-7570-460a-bab0-b64288f260d1/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:16:12,324 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc0bf69-7570-460a-bab0-b64288f260d1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:16:12,350 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc0bf69-7570-460a-bab0-b64288f260d1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-11-16 12:16:13,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:13,230 INFO L263 TraceCheckSpWp]: Trace formula consists of 3073 conjuncts, 215 conjunts are in the unsatisfiable core [2022-11-16 12:16:13,239 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:16:14,251 WARN L855 $PredicateComparison]: unable to prove that (and (< 0 |c_#StackHeapBarrier|) (exists ((v_ArrVal_4270 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_4268 (Array Int Int)) (v_ArrVal_4267 Int)) (and (= (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_4267)) |c_#memory_$Pointer$.offset|) (= (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_4268) |c_#memory_int|) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$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| v_ArrVal_4270)))))) is different from true [2022-11-16 12:16:14,922 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-16 12:16:14,923 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 50 [2022-11-16 12:16:14,958 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-16 12:16:14,959 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 44 [2022-11-16 12:16:14,990 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 12:16:14,990 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 25 [2022-11-16 12:16:15,042 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 6 [2022-11-16 12:16:56,193 WARN L233 SmtUtils]: Spent 6.02s on a formula simplification that was a NOOP. DAG size: 21 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 12:17:07,970 INFO L321 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2022-11-16 12:17:07,970 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 7 [2022-11-16 12:17:26,513 WARN L855 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_4275 Int) (v_ArrVal_4274 Int)) (and (= (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_4274)) |c_#memory_$Pointer$.offset|) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$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| v_ArrVal_4275))))) is different from true [2022-11-16 12:17:36,053 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 104 proven. 74 refuted. 0 times theorem prover too weak. 32 trivial. 9 not checked. [2022-11-16 12:17:36,053 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:17:38,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:17:38,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200562444] [2022-11-16 12:17:38,482 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:17:38,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [362229707] [2022-11-16 12:17:38,482 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [362229707] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:17:38,482 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:17:38,483 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54] total 54 [2022-11-16 12:17:38,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889536597] [2022-11-16 12:17:38,483 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-16 12:17:38,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-11-16 12:17:38,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:17:38,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-11-16 12:17:38,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=206, Invalid=2420, Unknown=138, NotChecked=206, Total=2970 [2022-11-16 12:17:38,485 INFO L87 Difference]: Start difference. First operand 2094 states and 3042 transitions. Second operand has 54 states, 48 states have (on average 2.7708333333333335) internal successors, (133), 48 states have internal predecessors, (133), 18 states have call successors, (30), 9 states have call predecessors, (30), 15 states have return successors, (28), 16 states have call predecessors, (28), 17 states have call successors, (28) [2022-11-16 12:17:41,563 WARN L855 $PredicateComparison]: unable to prove that (and (< 0 |c_#StackHeapBarrier|) (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_4275 Int) (v_ArrVal_4274 Int)) (and (= (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_4274)) |c_#memory_$Pointer$.offset|) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_4275))))) (exists ((v_ArrVal_4270 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_4268 (Array Int Int)) (v_ArrVal_4267 Int)) (and (= (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_4267)) |c_#memory_$Pointer$.offset|) (= (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_4268) |c_#memory_int|) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$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| v_ArrVal_4270)))))) is different from true [2022-11-16 12:19:24,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:19:24,969 INFO L93 Difference]: Finished difference Result 4921 states and 7119 transitions. [2022-11-16 12:19:24,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2022-11-16 12:19:24,970 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 48 states have (on average 2.7708333333333335) internal successors, (133), 48 states have internal predecessors, (133), 18 states have call successors, (30), 9 states have call predecessors, (30), 15 states have return successors, (28), 16 states have call predecessors, (28), 17 states have call successors, (28) Word has length 213 [2022-11-16 12:19:24,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:19:24,993 INFO L225 Difference]: With dead ends: 4921 [2022-11-16 12:19:24,994 INFO L226 Difference]: Without dead ends: 4085 [2022-11-16 12:19:25,000 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 185 SyntacticMatches, 5 SemanticMatches, 88 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 2319 ImplicationChecksByTransitivity, 182.7s TimeCoverageRelationStatistics Valid=518, Invalid=6743, Unknown=233, NotChecked=516, Total=8010 [2022-11-16 12:19:25,001 INFO L413 NwaCegarLoop]: 237 mSDtfsCounter, 466 mSDsluCounter, 4121 mSDsCounter, 0 mSdLazyCounter, 4964 mSolverCounterSat, 150 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 524 SdHoareTripleChecker+Valid, 4358 SdHoareTripleChecker+Invalid, 11467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 150 IncrementalHoareTripleChecker+Valid, 4964 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 6353 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2022-11-16 12:19:25,001 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [524 Valid, 4358 Invalid, 11467 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [150 Valid, 4964 Invalid, 0 Unknown, 6353 Unchecked, 5.5s Time] [2022-11-16 12:19:25,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4085 states. [2022-11-16 12:19:25,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4085 to 3577. [2022-11-16 12:19:25,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3577 states, 2634 states have (on average 1.1643887623386484) internal successors, (3067), 2685 states have internal predecessors, (3067), 601 states have call successors, (601), 249 states have call predecessors, (601), 341 states have return successors, (1616), 642 states have call predecessors, (1616), 590 states have call successors, (1616) [2022-11-16 12:19:25,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3577 states to 3577 states and 5284 transitions. [2022-11-16 12:19:25,406 INFO L78 Accepts]: Start accepts. Automaton has 3577 states and 5284 transitions. Word has length 213 [2022-11-16 12:19:25,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:19:25,407 INFO L495 AbstractCegarLoop]: Abstraction has 3577 states and 5284 transitions. [2022-11-16 12:19:25,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 48 states have (on average 2.7708333333333335) internal successors, (133), 48 states have internal predecessors, (133), 18 states have call successors, (30), 9 states have call predecessors, (30), 15 states have return successors, (28), 16 states have call predecessors, (28), 17 states have call successors, (28) [2022-11-16 12:19:25,407 INFO L276 IsEmpty]: Start isEmpty. Operand 3577 states and 5284 transitions. [2022-11-16 12:19:25,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2022-11-16 12:19:25,414 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:19:25,414 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:19:25,430 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc0bf69-7570-460a-bab0-b64288f260d1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2022-11-16 12:19:25,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc0bf69-7570-460a-bab0-b64288f260d1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:19:25,626 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:19:25,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:19:25,626 INFO L85 PathProgramCache]: Analyzing trace with hash 57682092, now seen corresponding path program 1 times [2022-11-16 12:19:25,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:19:25,627 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211318757] [2022-11-16 12:19:25,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:19:25,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:19:25,697 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:19:25,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1571410851] [2022-11-16 12:19:25,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:19:25,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:19:25,698 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc0bf69-7570-460a-bab0-b64288f260d1/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:19:25,699 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc0bf69-7570-460a-bab0-b64288f260d1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:19:25,705 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc0bf69-7570-460a-bab0-b64288f260d1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-11-16 12:19:26,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:19:26,629 INFO L263 TraceCheckSpWp]: Trace formula consists of 3085 conjuncts, 94 conjunts are in the unsatisfiable core [2022-11-16 12:19:26,636 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:19:26,639 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 12:19:27,041 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-16 12:19:27,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:19:27,682 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-16 12:19:27,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:19:27,697 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-16 12:19:27,903 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_4481 (Array Int Int))) (= (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_4481) |c_#memory_int|)) is different from true [2022-11-16 12:19:28,553 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 127 proven. 36 refuted. 3 times theorem prover too weak. 54 trivial. 0 not checked. [2022-11-16 12:19:28,553 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:19:28,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:19:28,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211318757] [2022-11-16 12:19:28,990 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:19:28,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1571410851] [2022-11-16 12:19:28,990 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1571410851] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:19:28,991 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:19:28,991 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2022-11-16 12:19:28,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644449047] [2022-11-16 12:19:28,991 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-16 12:19:28,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-11-16 12:19:28,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:19:28,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-11-16 12:19:28,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=606, Unknown=8, NotChecked=50, Total=756 [2022-11-16 12:19:28,992 INFO L87 Difference]: Start difference. First operand 3577 states and 5284 transitions. Second operand has 27 states, 25 states have (on average 5.04) internal successors, (126), 22 states have internal predecessors, (126), 13 states have call successors, (30), 7 states have call predecessors, (30), 9 states have return successors, (28), 10 states have call predecessors, (28), 13 states have call successors, (28) [2022-11-16 12:19:31,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:19:31,471 INFO L93 Difference]: Finished difference Result 7828 states and 11530 transitions. [2022-11-16 12:19:31,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-16 12:19:31,472 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 25 states have (on average 5.04) internal successors, (126), 22 states have internal predecessors, (126), 13 states have call successors, (30), 7 states have call predecessors, (30), 9 states have return successors, (28), 10 states have call predecessors, (28), 13 states have call successors, (28) Word has length 216 [2022-11-16 12:19:31,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:19:31,492 INFO L225 Difference]: With dead ends: 7828 [2022-11-16 12:19:31,492 INFO L226 Difference]: Without dead ends: 4358 [2022-11-16 12:19:31,503 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 317 GetRequests, 275 SyntacticMatches, 8 SemanticMatches, 34 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 337 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=148, Invalid=1028, Unknown=18, NotChecked=66, Total=1260 [2022-11-16 12:19:31,504 INFO L413 NwaCegarLoop]: 192 mSDtfsCounter, 191 mSDsluCounter, 1820 mSDsCounter, 0 mSdLazyCounter, 1554 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 2012 SdHoareTripleChecker+Invalid, 3486 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 1554 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1807 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-16 12:19:31,504 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [202 Valid, 2012 Invalid, 3486 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 1554 Invalid, 0 Unknown, 1807 Unchecked, 1.6s Time] [2022-11-16 12:19:31,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4358 states. [2022-11-16 12:19:31,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4358 to 3830. [2022-11-16 12:19:31,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3830 states, 2859 states have (on average 1.167191325638335) internal successors, (3337), 2905 states have internal predecessors, (3337), 618 states have call successors, (618), 250 states have call predecessors, (618), 352 states have return successors, (1713), 674 states have call predecessors, (1713), 607 states have call successors, (1713) [2022-11-16 12:19:31,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3830 states to 3830 states and 5668 transitions. [2022-11-16 12:19:31,890 INFO L78 Accepts]: Start accepts. Automaton has 3830 states and 5668 transitions. Word has length 216 [2022-11-16 12:19:31,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:19:31,891 INFO L495 AbstractCegarLoop]: Abstraction has 3830 states and 5668 transitions. [2022-11-16 12:19:31,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 25 states have (on average 5.04) internal successors, (126), 22 states have internal predecessors, (126), 13 states have call successors, (30), 7 states have call predecessors, (30), 9 states have return successors, (28), 10 states have call predecessors, (28), 13 states have call successors, (28) [2022-11-16 12:19:31,891 INFO L276 IsEmpty]: Start isEmpty. Operand 3830 states and 5668 transitions. [2022-11-16 12:19:31,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2022-11-16 12:19:31,899 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:19:31,899 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:19:31,912 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc0bf69-7570-460a-bab0-b64288f260d1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-11-16 12:19:32,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc0bf69-7570-460a-bab0-b64288f260d1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:19:32,112 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:19:32,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:19:32,112 INFO L85 PathProgramCache]: Analyzing trace with hash 1957042003, now seen corresponding path program 1 times [2022-11-16 12:19:32,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:19:32,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230646826] [2022-11-16 12:19:32,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:19:32,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:19:32,214 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:19:32,214 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [258287979] [2022-11-16 12:19:32,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:19:32,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:19:32,215 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc0bf69-7570-460a-bab0-b64288f260d1/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:19:32,216 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc0bf69-7570-460a-bab0-b64288f260d1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:19:32,246 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc0bf69-7570-460a-bab0-b64288f260d1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-11-16 12:19:33,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:19:33,154 INFO L263 TraceCheckSpWp]: Trace formula consists of 3160 conjuncts, 105 conjunts are in the unsatisfiable core [2022-11-16 12:19:33,159 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:19:51,765 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-16 12:19:51,765 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 20 [2022-11-16 12:19:51,776 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-16 12:19:51,777 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 16 [2022-11-16 12:19:51,782 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-16 12:19:51,782 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 13 [2022-11-16 12:19:51,960 INFO L134 CoverageAnalysis]: Checked inductivity of 244 backedges. 168 proven. 9 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2022-11-16 12:19:51,960 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:19:56,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:19:56,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230646826] [2022-11-16 12:19:56,965 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:19:56,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [258287979] [2022-11-16 12:19:56,965 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [258287979] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:19:56,965 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:19:56,965 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2022-11-16 12:19:56,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059096855] [2022-11-16 12:19:56,966 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-16 12:19:56,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-11-16 12:19:56,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:19:56,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-11-16 12:19:56,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=998, Unknown=8, NotChecked=0, Total=1122 [2022-11-16 12:19:56,967 INFO L87 Difference]: Start difference. First operand 3830 states and 5668 transitions. Second operand has 27 states, 25 states have (on average 5.16) internal successors, (129), 22 states have internal predecessors, (129), 9 states have call successors, (33), 6 states have call predecessors, (33), 8 states have return successors, (31), 9 states have call predecessors, (31), 9 states have call successors, (31) [2022-11-16 12:20:40,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:20:40,234 INFO L93 Difference]: Finished difference Result 6629 states and 9537 transitions. [2022-11-16 12:20:40,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-11-16 12:20:40,234 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 25 states have (on average 5.16) internal successors, (129), 22 states have internal predecessors, (129), 9 states have call successors, (33), 6 states have call predecessors, (33), 8 states have return successors, (31), 9 states have call predecessors, (31), 9 states have call successors, (31) Word has length 233 [2022-11-16 12:20:40,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:20:40,256 INFO L225 Difference]: With dead ends: 6629 [2022-11-16 12:20:40,256 INFO L226 Difference]: Without dead ends: 4553 [2022-11-16 12:20:40,265 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 356 GetRequests, 291 SyntacticMatches, 2 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 995 ImplicationChecksByTransitivity, 60.4s TimeCoverageRelationStatistics Valid=386, Invalid=3749, Unknown=25, NotChecked=0, Total=4160 [2022-11-16 12:20:40,266 INFO L413 NwaCegarLoop]: 149 mSDtfsCounter, 294 mSDsluCounter, 1609 mSDsCounter, 0 mSdLazyCounter, 3626 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 340 SdHoareTripleChecker+Valid, 1758 SdHoareTripleChecker+Invalid, 4743 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 3626 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1011 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-11-16 12:20:40,266 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [340 Valid, 1758 Invalid, 4743 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 3626 Invalid, 0 Unknown, 1011 Unchecked, 4.3s Time] [2022-11-16 12:20:40,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4553 states. [2022-11-16 12:20:40,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4553 to 4000. [2022-11-16 12:20:40,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4000 states, 3011 states have (on average 1.1697110594486881) internal successors, (3522), 3061 states have internal predecessors, (3522), 631 states have call successors, (631), 254 states have call predecessors, (631), 357 states have return successors, (1753), 684 states have call predecessors, (1753), 620 states have call successors, (1753) [2022-11-16 12:20:40,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4000 states to 4000 states and 5906 transitions. [2022-11-16 12:20:40,678 INFO L78 Accepts]: Start accepts. Automaton has 4000 states and 5906 transitions. Word has length 233 [2022-11-16 12:20:40,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:20:40,679 INFO L495 AbstractCegarLoop]: Abstraction has 4000 states and 5906 transitions. [2022-11-16 12:20:40,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 25 states have (on average 5.16) internal successors, (129), 22 states have internal predecessors, (129), 9 states have call successors, (33), 6 states have call predecessors, (33), 8 states have return successors, (31), 9 states have call predecessors, (31), 9 states have call successors, (31) [2022-11-16 12:20:40,679 INFO L276 IsEmpty]: Start isEmpty. Operand 4000 states and 5906 transitions. [2022-11-16 12:20:40,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2022-11-16 12:20:40,686 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:20:40,686 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:20:40,703 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc0bf69-7570-460a-bab0-b64288f260d1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2022-11-16 12:20:40,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc0bf69-7570-460a-bab0-b64288f260d1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-11-16 12:20:40,899 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:20:40,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:20:40,899 INFO L85 PathProgramCache]: Analyzing trace with hash -329726018, now seen corresponding path program 1 times [2022-11-16 12:20:40,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:20:40,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929612481] [2022-11-16 12:20:40,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:20:40,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:20:40,977 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:20:40,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2088650436] [2022-11-16 12:20:40,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:20:40,977 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:20:40,977 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc0bf69-7570-460a-bab0-b64288f260d1/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:20:40,978 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc0bf69-7570-460a-bab0-b64288f260d1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:20:40,998 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc0bf69-7570-460a-bab0-b64288f260d1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-11-16 12:20:41,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:20:41,951 INFO L263 TraceCheckSpWp]: Trace formula consists of 3158 conjuncts, 193 conjunts are in the unsatisfiable core [2022-11-16 12:20:41,960 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:20:42,247 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-16 12:20:42,302 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 12:20:42,451 INFO L321 Elim1Store]: treesize reduction 20, result has 57.4 percent of original size [2022-11-16 12:20:42,452 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 62 [2022-11-16 12:20:42,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:20:42,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:20:42,507 INFO L321 Elim1Store]: treesize reduction 64, result has 30.4 percent of original size [2022-11-16 12:20:42,507 INFO L350 Elim1Store]: Elim1 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 2 case distinctions, treesize of input 49 treesize of output 68 [2022-11-16 12:20:42,675 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-16 12:20:42,733 INFO L321 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2022-11-16 12:20:42,733 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 19 [2022-11-16 12:20:42,965 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 12:20:42,972 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_4938 (Array Int Int)) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_4937 (Array Int Int))) (and (= (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_4938) |c_#memory_$Pointer$.offset|) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_4937)))) is different from true [2022-11-16 12:20:43,800 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 12:20:43,804 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 12:21:00,845 WARN L855 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_4944 Int) (v_ArrVal_4942 Int) (v_ArrVal_4940 (Array Int Int))) (and (= (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_4942)) |c_#memory_$Pointer$.offset|) (= (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_4940) |c_#memory_int|) (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_4944)) |c_#memory_$Pointer$.base|))) is different from true [2022-11-16 12:21:14,199 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 112 proven. 20 refuted. 2 times theorem prover too weak. 102 trivial. 9 not checked. [2022-11-16 12:21:14,199 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:21:15,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:21:15,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929612481] [2022-11-16 12:21:15,175 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:21:15,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2088650436] [2022-11-16 12:21:15,176 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2088650436] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:21:15,176 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:21:15,176 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2022-11-16 12:21:15,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635866850] [2022-11-16 12:21:15,176 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-16 12:21:15,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-11-16 12:21:15,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:21:15,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-11-16 12:21:15,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=1635, Unknown=60, NotChecked=166, Total=1980 [2022-11-16 12:21:15,178 INFO L87 Difference]: Start difference. First operand 4000 states and 5906 transitions. Second operand has 41 states, 36 states have (on average 3.7222222222222223) internal successors, (134), 35 states have internal predecessors, (134), 15 states have call successors, (33), 6 states have call predecessors, (33), 9 states have return successors, (31), 11 states have call predecessors, (31), 13 states have call successors, (31) [2022-11-16 12:21:15,870 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_4944 Int) (v_ArrVal_4942 Int) (v_ArrVal_4940 (Array Int Int))) (and (= (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_4942)) |c_#memory_$Pointer$.offset|) (= (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_4940) |c_#memory_int|) (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_4944)) |c_#memory_$Pointer$.base|))) (exists ((v_ArrVal_4938 (Array Int Int)) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_4937 (Array Int Int))) (and (= (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_4938) |c_#memory_$Pointer$.offset|) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_4937))))) is different from true [2022-11-16 12:21:18,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:21:18,163 INFO L93 Difference]: Finished difference Result 7746 states and 11756 transitions. [2022-11-16 12:21:18,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-11-16 12:21:18,164 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 36 states have (on average 3.7222222222222223) internal successors, (134), 35 states have internal predecessors, (134), 15 states have call successors, (33), 6 states have call predecessors, (33), 9 states have return successors, (31), 11 states have call predecessors, (31), 13 states have call successors, (31) Word has length 232 [2022-11-16 12:21:18,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:21:18,190 INFO L225 Difference]: With dead ends: 7746 [2022-11-16 12:21:18,190 INFO L226 Difference]: Without dead ends: 4317 [2022-11-16 12:21:18,200 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 580 ImplicationChecksByTransitivity, 32.0s TimeCoverageRelationStatistics Valid=208, Invalid=2808, Unknown=76, NotChecked=330, Total=3422 [2022-11-16 12:21:18,201 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 149 mSDsluCounter, 2590 mSDsCounter, 0 mSdLazyCounter, 2337 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 2743 SdHoareTripleChecker+Invalid, 6133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 2337 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3693 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-16 12:21:18,201 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 2743 Invalid, 6133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 2337 Invalid, 0 Unknown, 3693 Unchecked, 1.9s Time] [2022-11-16 12:21:18,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4317 states. [2022-11-16 12:21:18,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4317 to 4047. [2022-11-16 12:21:18,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4047 states, 3038 states have (on average 1.1685319289005924) internal successors, (3550), 3088 states have internal predecessors, (3550), 645 states have call successors, (645), 260 states have call predecessors, (645), 363 states have return successors, (1805), 698 states have call predecessors, (1805), 634 states have call successors, (1805) [2022-11-16 12:21:18,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4047 states to 4047 states and 6000 transitions. [2022-11-16 12:21:18,630 INFO L78 Accepts]: Start accepts. Automaton has 4047 states and 6000 transitions. Word has length 232 [2022-11-16 12:21:18,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:21:18,631 INFO L495 AbstractCegarLoop]: Abstraction has 4047 states and 6000 transitions. [2022-11-16 12:21:18,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 36 states have (on average 3.7222222222222223) internal successors, (134), 35 states have internal predecessors, (134), 15 states have call successors, (33), 6 states have call predecessors, (33), 9 states have return successors, (31), 11 states have call predecessors, (31), 13 states have call successors, (31) [2022-11-16 12:21:18,631 INFO L276 IsEmpty]: Start isEmpty. Operand 4047 states and 6000 transitions. [2022-11-16 12:21:18,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2022-11-16 12:21:18,638 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:21:18,638 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:21:18,651 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc0bf69-7570-460a-bab0-b64288f260d1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-11-16 12:21:18,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc0bf69-7570-460a-bab0-b64288f260d1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-11-16 12:21:18,851 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:21:18,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:21:18,852 INFO L85 PathProgramCache]: Analyzing trace with hash 1036360143, now seen corresponding path program 1 times [2022-11-16 12:21:18,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:21:18,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202208608] [2022-11-16 12:21:18,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:21:18,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:21:18,971 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:21:18,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [371301539] [2022-11-16 12:21:18,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:21:18,977 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:21:18,977 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc0bf69-7570-460a-bab0-b64288f260d1/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:21:18,979 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc0bf69-7570-460a-bab0-b64288f260d1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:21:19,006 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc0bf69-7570-460a-bab0-b64288f260d1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-11-16 12:21:20,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:21:20,043 INFO L263 TraceCheckSpWp]: Trace formula consists of 3083 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 12:21:20,047 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:21:20,110 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 103 proven. 0 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2022-11-16 12:21:20,110 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:21:20,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:21:20,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202208608] [2022-11-16 12:21:20,110 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:21:20,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [371301539] [2022-11-16 12:21:20,111 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [371301539] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:21:20,111 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:21:20,111 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:21:20,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169913829] [2022-11-16 12:21:20,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:21:20,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:21:20,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:21:20,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:21:20,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:21:20,113 INFO L87 Difference]: Start difference. First operand 4047 states and 6000 transitions. Second operand has 5 states, 5 states have (on average 20.6) internal successors, (103), 5 states have internal predecessors, (103), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-11-16 12:21:20,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:21:20,723 INFO L93 Difference]: Finished difference Result 7521 states and 11249 transitions. [2022-11-16 12:21:20,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:21:20,724 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.6) internal successors, (103), 5 states have internal predecessors, (103), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 225 [2022-11-16 12:21:20,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:21:20,736 INFO L225 Difference]: With dead ends: 7521 [2022-11-16 12:21:20,736 INFO L226 Difference]: Without dead ends: 3740 [2022-11-16 12:21:20,745 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 221 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:21:20,746 INFO L413 NwaCegarLoop]: 241 mSDtfsCounter, 13 mSDsluCounter, 641 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 882 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 12:21:20,746 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 882 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 12:21:20,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3740 states. [2022-11-16 12:21:21,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3740 to 3676. [2022-11-16 12:21:21,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3676 states, 2722 states have (on average 1.163115356355621) internal successors, (3166), 2769 states have internal predecessors, (3166), 608 states have call successors, (608), 253 states have call predecessors, (608), 345 states have return successors, (1438), 653 states have call predecessors, (1438), 597 states have call successors, (1438) [2022-11-16 12:21:21,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3676 states to 3676 states and 5212 transitions. [2022-11-16 12:21:21,174 INFO L78 Accepts]: Start accepts. Automaton has 3676 states and 5212 transitions. Word has length 225 [2022-11-16 12:21:21,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:21:21,174 INFO L495 AbstractCegarLoop]: Abstraction has 3676 states and 5212 transitions. [2022-11-16 12:21:21,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.6) internal successors, (103), 5 states have internal predecessors, (103), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-11-16 12:21:21,175 INFO L276 IsEmpty]: Start isEmpty. Operand 3676 states and 5212 transitions. [2022-11-16 12:21:21,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2022-11-16 12:21:21,181 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:21:21,182 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:21:21,199 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc0bf69-7570-460a-bab0-b64288f260d1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2022-11-16 12:21:21,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc0bf69-7570-460a-bab0-b64288f260d1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-11-16 12:21:21,395 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:21:21,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:21:21,395 INFO L85 PathProgramCache]: Analyzing trace with hash -360505391, now seen corresponding path program 1 times [2022-11-16 12:21:21,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:21:21,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056681837] [2022-11-16 12:21:21,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:21:21,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:21:21,489 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:21:21,489 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1691666353] [2022-11-16 12:21:21,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:21:21,490 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:21:21,490 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc0bf69-7570-460a-bab0-b64288f260d1/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:21:21,491 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc0bf69-7570-460a-bab0-b64288f260d1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:21:21,510 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc0bf69-7570-460a-bab0-b64288f260d1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-11-16 12:21:22,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:21:22,603 INFO L263 TraceCheckSpWp]: Trace formula consists of 3163 conjuncts, 58 conjunts are in the unsatisfiable core [2022-11-16 12:21:22,609 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:21:25,253 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-16 12:21:25,254 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 10 [2022-11-16 12:21:25,260 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-16 12:21:25,260 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 10 [2022-11-16 12:21:25,348 INFO L134 CoverageAnalysis]: Checked inductivity of 244 backedges. 162 proven. 8 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2022-11-16 12:21:25,348 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:21:27,522 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse6 (+ |c_ULTIMATE.start_aws_priority_queue_top_harness_~#queue~0#1.offset| 80))) (let ((.cse1 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_aws_priority_queue_top_harness_~#queue~0#1.base|) .cse6)) (.cse2 (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_aws_priority_queue_top_harness_~#queue~0#1.base|) .cse6))) (and (forall ((|v_ULTIMATE.start_aws_priority_queue_top_harness_~#old_backpointers~0#1.offset_14| Int) (|v_ULTIMATE.start_aws_priority_queue_top_harness_~#old_backpointers~0#1.base_14| Int)) (let ((.cse3 (+ 32 |v_ULTIMATE.start_aws_priority_queue_top_harness_~#old_backpointers~0#1.offset_14|))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_priority_queue_top_harness_~#old_backpointers~0#1.base_14|) .cse3))) (or (not (= .cse0 .cse1)) (= .cse0 0) (not (= .cse2 (select (select |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_aws_priority_queue_top_harness_~#old_backpointers~0#1.base_14|) .cse3))))))) (forall ((|v_ULTIMATE.start_aws_priority_queue_top_harness_~#old_backpointers~0#1.offset_14| Int) (|v_ULTIMATE.start_aws_priority_queue_top_harness_~#old_backpointers~0#1.base_14| Int)) (let ((.cse5 (+ 32 |v_ULTIMATE.start_aws_priority_queue_top_harness_~#old_backpointers~0#1.offset_14|))) (let ((.cse4 (select (select |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_aws_priority_queue_top_harness_~#old_backpointers~0#1.base_14|) .cse5))) (or (= .cse4 0) (not (= (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_priority_queue_top_harness_~#old_backpointers~0#1.base_14|) .cse5) .cse1)) (not (= .cse2 .cse4))))))))) is different from false [2022-11-16 12:21:27,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:21:27,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056681837] [2022-11-16 12:21:27,559 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:21:27,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1691666353] [2022-11-16 12:21:27,560 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1691666353] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:21:27,560 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:21:27,560 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2022-11-16 12:21:27,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854123258] [2022-11-16 12:21:27,560 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-16 12:21:27,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-16 12:21:27,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:21:27,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-16 12:21:27,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=266, Unknown=2, NotChecked=32, Total=342 [2022-11-16 12:21:27,562 INFO L87 Difference]: Start difference. First operand 3676 states and 5212 transitions. Second operand has 17 states, 16 states have (on average 7.875) internal successors, (126), 17 states have internal predecessors, (126), 10 states have call successors, (32), 5 states have call predecessors, (32), 8 states have return successors, (30), 8 states have call predecessors, (30), 10 states have call successors, (30) [2022-11-16 12:21:44,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:21:44,319 INFO L93 Difference]: Finished difference Result 6301 states and 8772 transitions. [2022-11-16 12:21:44,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-16 12:21:44,319 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 7.875) internal successors, (126), 17 states have internal predecessors, (126), 10 states have call successors, (32), 5 states have call predecessors, (32), 8 states have return successors, (30), 8 states have call predecessors, (30), 10 states have call successors, (30) Word has length 233 [2022-11-16 12:21:44,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:21:44,332 INFO L225 Difference]: With dead ends: 6301 [2022-11-16 12:21:44,332 INFO L226 Difference]: Without dead ends: 4520 [2022-11-16 12:21:44,338 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 352 GetRequests, 312 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 241 ImplicationChecksByTransitivity, 18.7s TimeCoverageRelationStatistics Valid=182, Invalid=1296, Unknown=8, NotChecked=74, Total=1560 [2022-11-16 12:21:44,339 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 234 mSDsluCounter, 1755 mSDsCounter, 0 mSdLazyCounter, 2132 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 1937 SdHoareTripleChecker+Invalid, 2620 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 2132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 425 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:21:44,339 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [277 Valid, 1937 Invalid, 2620 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [63 Valid, 2132 Invalid, 0 Unknown, 425 Unchecked, 2.0s Time] [2022-11-16 12:21:44,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4520 states. [2022-11-16 12:21:44,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4520 to 3998. [2022-11-16 12:21:44,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3998 states, 3005 states have (on average 1.1663893510815309) internal successors, (3505), 3058 states have internal predecessors, (3505), 626 states have call successors, (626), 264 states have call predecessors, (626), 366 states have return successors, (1507), 675 states have call predecessors, (1507), 615 states have call successors, (1507) [2022-11-16 12:21:44,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3998 states to 3998 states and 5638 transitions. [2022-11-16 12:21:44,776 INFO L78 Accepts]: Start accepts. Automaton has 3998 states and 5638 transitions. Word has length 233 [2022-11-16 12:21:44,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:21:44,777 INFO L495 AbstractCegarLoop]: Abstraction has 3998 states and 5638 transitions. [2022-11-16 12:21:44,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 7.875) internal successors, (126), 17 states have internal predecessors, (126), 10 states have call successors, (32), 5 states have call predecessors, (32), 8 states have return successors, (30), 8 states have call predecessors, (30), 10 states have call successors, (30) [2022-11-16 12:21:44,777 INFO L276 IsEmpty]: Start isEmpty. Operand 3998 states and 5638 transitions. [2022-11-16 12:21:44,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2022-11-16 12:21:44,783 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:21:44,783 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:21:44,801 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc0bf69-7570-460a-bab0-b64288f260d1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2022-11-16 12:21:44,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc0bf69-7570-460a-bab0-b64288f260d1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:21:44,996 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:21:44,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:21:44,996 INFO L85 PathProgramCache]: Analyzing trace with hash 160396755, now seen corresponding path program 1 times [2022-11-16 12:21:44,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:21:44,997 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187063359] [2022-11-16 12:21:44,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:21:44,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:21:45,075 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:21:45,075 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [102060251] [2022-11-16 12:21:45,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:21:45,076 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:21:45,076 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc0bf69-7570-460a-bab0-b64288f260d1/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:21:45,077 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc0bf69-7570-460a-bab0-b64288f260d1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:21:45,102 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc0bf69-7570-460a-bab0-b64288f260d1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-11-16 12:21:46,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:21:46,126 INFO L263 TraceCheckSpWp]: Trace formula consists of 3124 conjuncts, 283 conjunts are in the unsatisfiable core [2022-11-16 12:21:46,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:21:46,306 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2022-11-16 12:21:47,530 WARN L855 $PredicateComparison]: unable to prove that (and (< 0 |c_#StackHeapBarrier|) (exists ((v_ArrVal_5544 Int)) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_5544)))) (exists ((v_ArrVal_5542 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_5542))) (exists ((v_ArrVal_5541 Int)) (= (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_5541)) |c_#memory_$Pointer$.offset|))) is different from true [2022-11-16 12:21:47,565 WARN L855 $PredicateComparison]: unable to prove that (and (< 0 |c_#StackHeapBarrier|) (exists ((|aws_array_list_is_valid_~#required_size~0.base| Int) (v_ArrVal_5542 (Array Int Int)) (v_ArrVal_5544 Int) (v_ArrVal_5541 Int)) (and (= (store |c_old(#memory_int)| |aws_array_list_is_valid_~#required_size~0.base| v_ArrVal_5542) |c_#memory_int|) (= (store |c_old(#memory_$Pointer$.offset)| |aws_array_list_is_valid_~#required_size~0.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_array_list_is_valid_~#required_size~0.base|) 0 v_ArrVal_5541)) |c_#memory_$Pointer$.offset|) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_array_list_is_valid_~#required_size~0.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_array_list_is_valid_~#required_size~0.base|) 0 v_ArrVal_5544)))))) is different from true [2022-11-16 12:21:47,671 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-16 12:21:47,672 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 50 [2022-11-16 12:21:47,702 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-16 12:21:47,702 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 44 [2022-11-16 12:21:47,723 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 12:21:47,723 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 25 [2022-11-16 12:21:47,742 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 6 [2022-11-16 12:21:51,672 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_5549 Int)) (= |c_#memory_int| (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| (store (select |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_5549)))) (exists ((v_ArrVal_5548 Int)) (= (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_5548)) |c_#memory_$Pointer$.base|)) (exists ((v_ArrVal_5546 Int)) (= (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_5546)) |c_#memory_$Pointer$.offset|))) is different from true [2022-11-16 12:21:52,422 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-16 12:21:52,428 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 99 proven. 69 refuted. 0 times theorem prover too weak. 27 trivial. 23 not checked. [2022-11-16 12:21:52,429 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:21:52,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:21:52,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187063359] [2022-11-16 12:21:52,872 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:21:52,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [102060251] [2022-11-16 12:21:52,872 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [102060251] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:21:52,872 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:21:52,872 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48] total 48 [2022-11-16 12:21:52,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013535224] [2022-11-16 12:21:52,872 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-16 12:21:52,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-11-16 12:21:52,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:21:52,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-11-16 12:21:52,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=1930, Unknown=5, NotChecked=270, Total=2352 [2022-11-16 12:21:52,874 INFO L87 Difference]: Start difference. First operand 3998 states and 5638 transitions. Second operand has 48 states, 41 states have (on average 3.5121951219512195) internal successors, (144), 43 states have internal predecessors, (144), 19 states have call successors, (33), 7 states have call predecessors, (33), 14 states have return successors, (31), 16 states have call predecessors, (31), 18 states have call successors, (31) [2022-11-16 12:21:55,163 WARN L855 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base|)) (.cse1 (select |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base|))) (and (< 0 |c_#StackHeapBarrier|) (exists ((v_ArrVal_5544 Int)) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| (store .cse0 |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_5544)))) (exists ((v_ArrVal_5549 Int)) (= |c_#memory_int| (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| (store (select |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_5549)))) (exists ((v_ArrVal_5548 Int)) (= (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| (store .cse0 |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_5548)) |c_#memory_$Pointer$.base|)) (exists ((v_ArrVal_5546 Int)) (= (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| (store .cse1 |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_5546)) |c_#memory_$Pointer$.offset|)) (exists ((v_ArrVal_5542 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_5542))) (exists ((v_ArrVal_5541 Int)) (= (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| (store .cse1 |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_5541)) |c_#memory_$Pointer$.offset|)))) is different from true [2022-11-16 12:22:01,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:22:01,862 INFO L93 Difference]: Finished difference Result 6362 states and 9014 transitions. [2022-11-16 12:22:01,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-11-16 12:22:01,862 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 41 states have (on average 3.5121951219512195) internal successors, (144), 43 states have internal predecessors, (144), 19 states have call successors, (33), 7 states have call predecessors, (33), 14 states have return successors, (31), 16 states have call predecessors, (31), 18 states have call successors, (31) Word has length 222 [2022-11-16 12:22:01,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:22:01,880 INFO L225 Difference]: With dead ends: 6362 [2022-11-16 12:22:01,880 INFO L226 Difference]: Without dead ends: 5037 [2022-11-16 12:22:01,887 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 177 SyntacticMatches, 4 SemanticMatches, 77 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 1452 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=364, Invalid=5195, Unknown=7, NotChecked=596, Total=6162 [2022-11-16 12:22:01,888 INFO L413 NwaCegarLoop]: 189 mSDtfsCounter, 317 mSDsluCounter, 2852 mSDsCounter, 0 mSdLazyCounter, 5918 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 364 SdHoareTripleChecker+Valid, 3041 SdHoareTripleChecker+Invalid, 9389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 5918 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3346 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:22:01,888 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [364 Valid, 3041 Invalid, 9389 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 5918 Invalid, 0 Unknown, 3346 Unchecked, 6.0s Time] [2022-11-16 12:22:01,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5037 states. [2022-11-16 12:22:02,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5037 to 4915. [2022-11-16 12:22:02,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4915 states, 3638 states have (on average 1.164925783397471) internal successors, (4238), 3704 states have internal predecessors, (4238), 816 states have call successors, (816), 339 states have call predecessors, (816), 460 states have return successors, (1931), 871 states have call predecessors, (1931), 797 states have call successors, (1931) [2022-11-16 12:22:02,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4915 states to 4915 states and 6985 transitions. [2022-11-16 12:22:02,387 INFO L78 Accepts]: Start accepts. Automaton has 4915 states and 6985 transitions. Word has length 222 [2022-11-16 12:22:02,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:22:02,388 INFO L495 AbstractCegarLoop]: Abstraction has 4915 states and 6985 transitions. [2022-11-16 12:22:02,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 41 states have (on average 3.5121951219512195) internal successors, (144), 43 states have internal predecessors, (144), 19 states have call successors, (33), 7 states have call predecessors, (33), 14 states have return successors, (31), 16 states have call predecessors, (31), 18 states have call successors, (31) [2022-11-16 12:22:02,388 INFO L276 IsEmpty]: Start isEmpty. Operand 4915 states and 6985 transitions. [2022-11-16 12:22:02,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2022-11-16 12:22:02,395 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:22:02,395 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:22:02,407 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc0bf69-7570-460a-bab0-b64288f260d1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2022-11-16 12:22:02,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc0bf69-7570-460a-bab0-b64288f260d1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2022-11-16 12:22:02,607 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:22:02,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:22:02,607 INFO L85 PathProgramCache]: Analyzing trace with hash 1977835853, now seen corresponding path program 1 times [2022-11-16 12:22:02,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:22:02,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913612561] [2022-11-16 12:22:02,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:22:02,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:22:02,688 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:22:02,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1031929259] [2022-11-16 12:22:02,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:22:02,689 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:22:02,689 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc0bf69-7570-460a-bab0-b64288f260d1/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:22:02,690 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc0bf69-7570-460a-bab0-b64288f260d1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:22:02,714 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc0bf69-7570-460a-bab0-b64288f260d1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-11-16 12:22:03,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:22:03,791 INFO L263 TraceCheckSpWp]: Trace formula consists of 3208 conjuncts, 72 conjunts are in the unsatisfiable core [2022-11-16 12:22:03,797 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:22:06,470 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-16 12:22:06,472 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-16 12:22:06,491 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_5827 Int) (v_ArrVal_5825 Int) (|save_byte_from_array_~storage#1.base| Int) (v_ArrVal_5821 Int) (v_ArrVal_5820 Int)) (let ((.cse0 (+ |c_save_byte_from_array_#in~storage#1.offset| 8))) (and (= (store |c_old(#memory_$Pointer$.offset)| |save_byte_from_array_~storage#1.base| (store (store (select |c_old(#memory_$Pointer$.offset)| |save_byte_from_array_~storage#1.base|) |c_save_byte_from_array_#in~storage#1.offset| v_ArrVal_5820) .cse0 v_ArrVal_5825)) |c_#memory_$Pointer$.offset|) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |save_byte_from_array_~storage#1.base| (store (store (select |c_old(#memory_$Pointer$.base)| |save_byte_from_array_~storage#1.base|) |c_save_byte_from_array_#in~storage#1.offset| v_ArrVal_5821) .cse0 v_ArrVal_5827)))))) is different from true [2022-11-16 12:22:06,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:22:06,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:22:06,509 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 27 [2022-11-16 12:22:06,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:22:06,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:22:06,518 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 27 [2022-11-16 12:22:06,534 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-16 12:22:06,535 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 10 [2022-11-16 12:22:06,541 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-16 12:22:06,541 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 10 [2022-11-16 12:22:06,645 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 174 proven. 13 refuted. 0 times theorem prover too weak. 90 trivial. 2 not checked. [2022-11-16 12:22:06,645 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:22:08,832 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse6 (+ |c_ULTIMATE.start_aws_priority_queue_top_harness_~#queue~0#1.offset| 80))) (let ((.cse0 (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_aws_priority_queue_top_harness_~#queue~0#1.base|) .cse6)) (.cse3 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_aws_priority_queue_top_harness_~#queue~0#1.base|) .cse6))) (and (forall ((|v_ULTIMATE.start_aws_priority_queue_top_harness_~#old_backpointers~0#1.offset_15| Int) (|v_ULTIMATE.start_aws_priority_queue_top_harness_~#old_backpointers~0#1.base_15| Int)) (let ((.cse2 (+ 32 |v_ULTIMATE.start_aws_priority_queue_top_harness_~#old_backpointers~0#1.offset_15|))) (let ((.cse1 (select (select |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_aws_priority_queue_top_harness_~#old_backpointers~0#1.base_15|) .cse2))) (or (not (= .cse0 .cse1)) (not (= (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_priority_queue_top_harness_~#old_backpointers~0#1.base_15|) .cse2) .cse3)) (= .cse1 0))))) (forall ((|v_ULTIMATE.start_aws_priority_queue_top_harness_~#old_backpointers~0#1.offset_15| Int) (|v_ULTIMATE.start_aws_priority_queue_top_harness_~#old_backpointers~0#1.base_15| Int)) (let ((.cse4 (+ 32 |v_ULTIMATE.start_aws_priority_queue_top_harness_~#old_backpointers~0#1.offset_15|))) (let ((.cse5 (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_priority_queue_top_harness_~#old_backpointers~0#1.base_15|) .cse4))) (or (not (= .cse0 (select (select |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_aws_priority_queue_top_harness_~#old_backpointers~0#1.base_15|) .cse4))) (not (= .cse5 .cse3)) (= .cse5 0)))))))) is different from false [2022-11-16 12:22:47,635 WARN L233 SmtUtils]: Spent 6.07s on a formula simplification that was a NOOP. DAG size: 46 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 12:22:47,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:22:47,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913612561] [2022-11-16 12:22:47,636 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:22:47,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1031929259] [2022-11-16 12:22:47,637 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1031929259] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:22:47,637 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:22:47,637 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2022-11-16 12:22:47,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105543224] [2022-11-16 12:22:47,637 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-16 12:22:47,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-16 12:22:47,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:22:47,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-16 12:22:47,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=395, Unknown=16, NotChecked=82, Total=552 [2022-11-16 12:22:47,639 INFO L87 Difference]: Start difference. First operand 4915 states and 6985 transitions. Second operand has 21 states, 19 states have (on average 6.7368421052631575) internal successors, (128), 19 states have internal predecessors, (128), 12 states have call successors, (33), 5 states have call predecessors, (33), 8 states have return successors, (31), 9 states have call predecessors, (31), 12 states have call successors, (31) [2022-11-16 12:23:21,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:23:21,055 INFO L93 Difference]: Finished difference Result 8666 states and 12251 transitions. [2022-11-16 12:23:21,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-16 12:23:21,056 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 6.7368421052631575) internal successors, (128), 19 states have internal predecessors, (128), 12 states have call successors, (33), 5 states have call predecessors, (33), 8 states have return successors, (31), 9 states have call predecessors, (31), 12 states have call successors, (31) Word has length 240 [2022-11-16 12:23:21,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:23:21,076 INFO L225 Difference]: With dead ends: 8666 [2022-11-16 12:23:21,076 INFO L226 Difference]: Without dead ends: 5365 [2022-11-16 12:23:21,086 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 360 GetRequests, 315 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 305 ImplicationChecksByTransitivity, 74.0s TimeCoverageRelationStatistics Valid=206, Invalid=1578, Unknown=30, NotChecked=166, Total=1980 [2022-11-16 12:23:21,087 INFO L413 NwaCegarLoop]: 186 mSDtfsCounter, 213 mSDsluCounter, 1850 mSDsCounter, 0 mSdLazyCounter, 1858 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 228 SdHoareTripleChecker+Valid, 2036 SdHoareTripleChecker+Invalid, 2673 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 1858 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 757 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:23:21,087 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [228 Valid, 2036 Invalid, 2673 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 1858 Invalid, 0 Unknown, 757 Unchecked, 2.0s Time] [2022-11-16 12:23:21,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5365 states. [2022-11-16 12:23:21,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5365 to 4855. [2022-11-16 12:23:21,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4855 states, 3603 states have (on average 1.1648626144879268) internal successors, (4197), 3667 states have internal predecessors, (4197), 797 states have call successors, (797), 332 states have call predecessors, (797), 454 states have return successors, (1896), 855 states have call predecessors, (1896), 778 states have call successors, (1896) [2022-11-16 12:23:21,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4855 states to 4855 states and 6890 transitions. [2022-11-16 12:23:21,642 INFO L78 Accepts]: Start accepts. Automaton has 4855 states and 6890 transitions. Word has length 240 [2022-11-16 12:23:21,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:23:21,642 INFO L495 AbstractCegarLoop]: Abstraction has 4855 states and 6890 transitions. [2022-11-16 12:23:21,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 19 states have (on average 6.7368421052631575) internal successors, (128), 19 states have internal predecessors, (128), 12 states have call successors, (33), 5 states have call predecessors, (33), 8 states have return successors, (31), 9 states have call predecessors, (31), 12 states have call successors, (31) [2022-11-16 12:23:21,643 INFO L276 IsEmpty]: Start isEmpty. Operand 4855 states and 6890 transitions. [2022-11-16 12:23:21,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2022-11-16 12:23:21,646 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:23:21,647 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:23:21,658 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc0bf69-7570-460a-bab0-b64288f260d1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2022-11-16 12:23:21,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc0bf69-7570-460a-bab0-b64288f260d1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:23:21,847 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:23:21,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:23:21,848 INFO L85 PathProgramCache]: Analyzing trace with hash 2080555087, now seen corresponding path program 1 times [2022-11-16 12:23:21,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:23:21,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483663151] [2022-11-16 12:23:21,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:23:21,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:23:21,971 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:23:21,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2026510657] [2022-11-16 12:23:21,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:23:21,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:23:21,972 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc0bf69-7570-460a-bab0-b64288f260d1/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:23:21,973 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc0bf69-7570-460a-bab0-b64288f260d1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:23:21,994 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc0bf69-7570-460a-bab0-b64288f260d1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-11-16 12:23:23,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:23,092 INFO L263 TraceCheckSpWp]: Trace formula consists of 3116 conjuncts, 198 conjunts are in the unsatisfiable core [2022-11-16 12:23:23,101 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:23:24,203 WARN L855 $PredicateComparison]: unable to prove that (and (< 0 |c_#StackHeapBarrier|) (exists ((v_ArrVal_6052 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_6049 Int) (v_ArrVal_6050 (Array Int Int))) (and (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_6052)) |c_#memory_$Pointer$.base|) (= |c_#memory_$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| v_ArrVal_6049))) (= (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_6050) |c_#memory_int|)))) is different from true [2022-11-16 12:23:24,247 WARN L855 $PredicateComparison]: unable to prove that (and (< 0 |c_#StackHeapBarrier|) (exists ((v_ArrVal_6052 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_6049 Int) (v_ArrVal_6050 (Array Int Int))) (and (= (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_6049)) |c_#memory_$Pointer$.offset|) (= (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_6050) |c_#memory_int|) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$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|) 0 v_ArrVal_6052)))))) is different from true [2022-11-16 12:23:24,392 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-16 12:23:24,393 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 50 [2022-11-16 12:23:24,426 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-16 12:23:24,426 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 44 [2022-11-16 12:23:24,454 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 12:23:24,455 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 25 [2022-11-16 12:23:24,505 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 6 [2022-11-16 12:23:25,515 INFO L321 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2022-11-16 12:23:25,515 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 7 [2022-11-16 12:23:27,241 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_6053 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_6056 Int)) (and (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_6053))) (= |c_#memory_$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| v_ArrVal_6056))))) is different from true [2022-11-16 12:23:37,253 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 97 proven. 67 refuted. 0 times theorem prover too weak. 29 trivial. 25 not checked. [2022-11-16 12:23:37,253 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:23:39,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:23:39,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483663151] [2022-11-16 12:23:39,929 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:23:39,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2026510657] [2022-11-16 12:23:39,929 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2026510657] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:23:39,930 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:23:39,930 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45] total 45 [2022-11-16 12:23:39,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844086960] [2022-11-16 12:23:39,930 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-16 12:23:39,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-11-16 12:23:39,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:23:39,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-11-16 12:23:39,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=1873, Unknown=60, NotChecked=270, Total=2352 [2022-11-16 12:23:39,932 INFO L87 Difference]: Start difference. First operand 4855 states and 6890 transitions. Second operand has 45 states, 39 states have (on average 3.7435897435897436) internal successors, (146), 41 states have internal predecessors, (146), 18 states have call successors, (33), 7 states have call predecessors, (33), 14 states have return successors, (31), 15 states have call predecessors, (31), 17 states have call successors, (31) [2022-11-16 12:23:41,800 WARN L855 $PredicateComparison]: unable to prove that (and (< 0 |c_#StackHeapBarrier|) (exists ((v_ArrVal_6053 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_6056 Int)) (and (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_6053))) (= |c_#memory_$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$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_6056))))) (exists ((v_ArrVal_6052 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_6049 Int) (v_ArrVal_6050 (Array Int Int))) (and (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_6052)) |c_#memory_$Pointer$.base|) (= |c_#memory_$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| v_ArrVal_6049))) (= (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_6050) |c_#memory_int|)))) is different from true [2022-11-16 12:24:29,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:24:29,323 INFO L93 Difference]: Finished difference Result 8614 states and 12038 transitions. [2022-11-16 12:24:29,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2022-11-16 12:24:29,323 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 39 states have (on average 3.7435897435897436) internal successors, (146), 41 states have internal predecessors, (146), 18 states have call successors, (33), 7 states have call predecessors, (33), 14 states have return successors, (31), 15 states have call predecessors, (31), 17 states have call successors, (31) Word has length 222 [2022-11-16 12:24:29,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:24:29,357 INFO L225 Difference]: With dead ends: 8614 [2022-11-16 12:24:29,357 INFO L226 Difference]: Without dead ends: 6754 [2022-11-16 12:24:29,366 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 202 SyntacticMatches, 4 SemanticMatches, 98 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 2694 ImplicationChecksByTransitivity, 55.5s TimeCoverageRelationStatistics Valid=600, Invalid=8406, Unknown=130, NotChecked=764, Total=9900 [2022-11-16 12:24:29,367 INFO L413 NwaCegarLoop]: 235 mSDtfsCounter, 473 mSDsluCounter, 3857 mSDsCounter, 0 mSdLazyCounter, 6421 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 531 SdHoareTripleChecker+Valid, 4092 SdHoareTripleChecker+Invalid, 11046 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 6421 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 4496 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2022-11-16 12:24:29,374 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [531 Valid, 4092 Invalid, 11046 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [129 Valid, 6421 Invalid, 0 Unknown, 4496 Unchecked, 7.5s Time] [2022-11-16 12:24:29,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6754 states. [2022-11-16 12:24:30,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6754 to 6147. [2022-11-16 12:24:30,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6147 states, 4496 states have (on average 1.1623665480427046) internal successors, (5226), 4589 states have internal predecessors, (5226), 1041 states have call successors, (1041), 438 states have call predecessors, (1041), 609 states have return successors, (2492), 1119 states have call predecessors, (2492), 1016 states have call successors, (2492) [2022-11-16 12:24:30,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6147 states to 6147 states and 8759 transitions. [2022-11-16 12:24:30,113 INFO L78 Accepts]: Start accepts. Automaton has 6147 states and 8759 transitions. Word has length 222 [2022-11-16 12:24:30,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:24:30,114 INFO L495 AbstractCegarLoop]: Abstraction has 6147 states and 8759 transitions. [2022-11-16 12:24:30,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 39 states have (on average 3.7435897435897436) internal successors, (146), 41 states have internal predecessors, (146), 18 states have call successors, (33), 7 states have call predecessors, (33), 14 states have return successors, (31), 15 states have call predecessors, (31), 17 states have call successors, (31) [2022-11-16 12:24:30,114 INFO L276 IsEmpty]: Start isEmpty. Operand 6147 states and 8759 transitions. [2022-11-16 12:24:30,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2022-11-16 12:24:30,119 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:24:30,120 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:24:30,132 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc0bf69-7570-460a-bab0-b64288f260d1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2022-11-16 12:24:30,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc0bf69-7570-460a-bab0-b64288f260d1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:24:30,321 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:24:30,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:24:30,321 INFO L85 PathProgramCache]: Analyzing trace with hash 793779985, now seen corresponding path program 1 times [2022-11-16 12:24:30,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:24:30,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400455546] [2022-11-16 12:24:30,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:24:30,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:24:30,398 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:24:30,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1682146828] [2022-11-16 12:24:30,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:24:30,399 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:24:30,399 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc0bf69-7570-460a-bab0-b64288f260d1/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:24:30,400 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc0bf69-7570-460a-bab0-b64288f260d1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:24:30,404 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc0bf69-7570-460a-bab0-b64288f260d1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-11-16 12:24:31,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:31,510 INFO L263 TraceCheckSpWp]: Trace formula consists of 3173 conjuncts, 151 conjunts are in the unsatisfiable core [2022-11-16 12:24:31,517 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:24:32,553 WARN L855 $PredicateComparison]: unable to prove that (and (< 0 |c_#StackHeapBarrier|) (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_6292 (Array Int Int)) (v_ArrVal_6291 (Array Int Int)) (v_ArrVal_6293 (Array Int Int))) (and (= (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_6292) |c_#memory_int|) (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_6293) |c_#memory_$Pointer$.base|) (= (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_6291) |c_#memory_$Pointer$.offset|)))) is different from true [2022-11-16 12:24:32,719 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 12:24:32,719 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 42 [2022-11-16 12:24:32,740 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 12:24:32,741 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 40 [2022-11-16 12:24:32,762 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 12:24:32,762 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 25 [2022-11-16 12:24:32,786 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2022-11-16 12:24:32,788 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-16 12:24:32,797 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 6 [2022-11-16 12:24:34,376 INFO L321 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2022-11-16 12:24:34,377 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 7 [2022-11-16 12:24:34,779 INFO L321 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2022-11-16 12:24:34,780 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 23 [2022-11-16 12:24:34,961 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-16 12:24:34,961 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 12 [2022-11-16 12:24:35,110 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 161 proven. 22 refuted. 0 times theorem prover too weak. 55 trivial. 12 not checked. [2022-11-16 12:24:35,111 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:24:37,931 WARN L833 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_aws_priority_queue_top_harness_~#old_backpointers~0#1.offset_16| Int) (|v_ULTIMATE.start_aws_priority_queue_top_harness_~#old_backpointers~0#1.base_16| Int)) (let ((.cse0 (select (select |c_#memory_int| |v_ULTIMATE.start_aws_priority_queue_top_harness_~#old_backpointers~0#1.base_16|) (+ 8 |v_ULTIMATE.start_aws_priority_queue_top_harness_~#old_backpointers~0#1.offset_16|)))) (or (not (= (select (select |c_#memory_int| |c_ULTIMATE.start_aws_priority_queue_top_harness_~#queue~0#1.base|) (+ 56 |c_ULTIMATE.start_aws_priority_queue_top_harness_~#queue~0#1.offset|)) .cse0)) (= (mod .cse0 18446744073709551616) 0)))) is different from false [2022-11-16 12:24:40,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:24:40,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400455546] [2022-11-16 12:24:40,333 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:24:40,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1682146828] [2022-11-16 12:24:40,333 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1682146828] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:24:40,333 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:24:40,334 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2022-11-16 12:24:40,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187903421] [2022-11-16 12:24:40,334 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-16 12:24:40,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-11-16 12:24:40,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:24:40,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-11-16 12:24:40,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=1659, Unknown=2, NotChecked=166, Total=1980 [2022-11-16 12:24:40,335 INFO L87 Difference]: Start difference. First operand 6147 states and 8759 transitions. Second operand has 36 states, 33 states have (on average 4.181818181818182) internal successors, (138), 30 states have internal predecessors, (138), 12 states have call successors, (33), 7 states have call predecessors, (33), 10 states have return successors, (31), 13 states have call predecessors, (31), 12 states have call successors, (31)