./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_priority_queue_clean_up_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b 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_c4e40075-6577-41eb-aecd-10c7a982b5fe/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e40075-6577-41eb-aecd-10c7a982b5fe/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e40075-6577-41eb-aecd-10c7a982b5fe/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e40075-6577-41eb-aecd-10c7a982b5fe/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_priority_queue_clean_up_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e40075-6577-41eb-aecd-10c7a982b5fe/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e40075-6577-41eb-aecd-10c7a982b5fe/bin/uautomizer-TMbwUNV5ro --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 efb3bc3d53d5de978717fadeb26804aec5f97721ade955fc2d1463ef24ff6010 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-18 19:35:39,270 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 19:35:39,277 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 19:35:39,313 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 19:35:39,316 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 19:35:39,321 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 19:35:39,324 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 19:35:39,332 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 19:35:39,334 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 19:35:39,336 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 19:35:39,338 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 19:35:39,340 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 19:35:39,340 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 19:35:39,347 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 19:35:39,349 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 19:35:39,351 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 19:35:39,353 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 19:35:39,355 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 19:35:39,357 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 19:35:39,363 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 19:35:39,367 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 19:35:39,369 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 19:35:39,372 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 19:35:39,373 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 19:35:39,380 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 19:35:39,385 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 19:35:39,386 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 19:35:39,387 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 19:35:39,389 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 19:35:39,390 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 19:35:39,390 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 19:35:39,391 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 19:35:39,393 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 19:35:39,395 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 19:35:39,397 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 19:35:39,398 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 19:35:39,399 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 19:35:39,399 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 19:35:39,399 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 19:35:39,400 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 19:35:39,401 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 19:35:39,402 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e40075-6577-41eb-aecd-10c7a982b5fe/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-18 19:35:39,440 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 19:35:39,440 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 19:35:39,440 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 19:35:39,441 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 19:35:39,441 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 19:35:39,442 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 19:35:39,442 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 19:35:39,443 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 19:35:39,443 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 19:35:39,443 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 19:35:39,444 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 19:35:39,444 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 19:35:39,444 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 19:35:39,444 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 19:35:39,445 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 19:35:39,445 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 19:35:39,445 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 19:35:39,445 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 19:35:39,446 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 19:35:39,446 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 19:35:39,446 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 19:35:39,446 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:35:39,447 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 19:35:39,447 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 19:35:39,447 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 19:35:39,447 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 19:35:39,448 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 19:35:39,448 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 19:35:39,448 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 19:35:39,448 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 19:35:39,449 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_c4e40075-6577-41eb-aecd-10c7a982b5fe/bin/uautomizer-TMbwUNV5ro/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e40075-6577-41eb-aecd-10c7a982b5fe/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> efb3bc3d53d5de978717fadeb26804aec5f97721ade955fc2d1463ef24ff6010 [2022-11-18 19:35:39,779 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 19:35:39,804 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 19:35:39,807 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 19:35:39,810 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 19:35:39,811 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 19:35:39,813 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e40075-6577-41eb-aecd-10c7a982b5fe/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/aws-c-common/aws_priority_queue_clean_up_harness.i [2022-11-18 19:35:39,909 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e40075-6577-41eb-aecd-10c7a982b5fe/bin/uautomizer-TMbwUNV5ro/data/1c13538a9/1b6c9d8ec77a48fe8eff6043f728001c/FLAG69e0743c7 [2022-11-18 19:35:40,951 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 19:35:40,951 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e40075-6577-41eb-aecd-10c7a982b5fe/sv-benchmarks/c/aws-c-common/aws_priority_queue_clean_up_harness.i [2022-11-18 19:35:41,008 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e40075-6577-41eb-aecd-10c7a982b5fe/bin/uautomizer-TMbwUNV5ro/data/1c13538a9/1b6c9d8ec77a48fe8eff6043f728001c/FLAG69e0743c7 [2022-11-18 19:35:41,391 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e40075-6577-41eb-aecd-10c7a982b5fe/bin/uautomizer-TMbwUNV5ro/data/1c13538a9/1b6c9d8ec77a48fe8eff6043f728001c [2022-11-18 19:35:41,395 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 19:35:41,398 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 19:35:41,404 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 19:35:41,404 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 19:35:41,408 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 19:35:41,409 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:35:41" (1/1) ... [2022-11-18 19:35:41,410 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b355afe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:35:41, skipping insertion in model container [2022-11-18 19:35:41,411 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:35:41" (1/1) ... [2022-11-18 19:35:41,419 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 19:35:41,570 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 19:35:41,963 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e40075-6577-41eb-aecd-10c7a982b5fe/sv-benchmarks/c/aws-c-common/aws_priority_queue_clean_up_harness.i[4501,4514] [2022-11-18 19:35:41,972 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e40075-6577-41eb-aecd-10c7a982b5fe/sv-benchmarks/c/aws-c-common/aws_priority_queue_clean_up_harness.i[4561,4574] [2022-11-18 19:35:42,913 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-18 19:35:43,023 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 19:35:43,024 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 19:35:43,025 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 19:35:43,026 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 19:35:43,028 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 19:35:43,052 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 19:35:43,052 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 19:35:43,061 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 19:35:43,062 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 19:35:43,474 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-18 19:35:43,476 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-18 19:35:43,478 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-18 19:35:43,479 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-18 19:35:43,481 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-18 19:35:43,482 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-18 19:35:43,488 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-18 19:35:43,488 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-18 19:35:43,489 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-18 19:35:43,490 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-18 19:35:43,653 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 19:35:43,654 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 19:35:43,720 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:35:43,751 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 19:35:43,768 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e40075-6577-41eb-aecd-10c7a982b5fe/sv-benchmarks/c/aws-c-common/aws_priority_queue_clean_up_harness.i[4501,4514] [2022-11-18 19:35:43,769 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e40075-6577-41eb-aecd-10c7a982b5fe/sv-benchmarks/c/aws-c-common/aws_priority_queue_clean_up_harness.i[4561,4574] [2022-11-18 19:35:43,814 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-18 19:35:43,834 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 19:35:43,834 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 19:35:43,835 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 19:35:43,836 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 19:35:43,837 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 19:35:43,847 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 19:35:43,848 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 19:35:43,850 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 19:35:43,850 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 19:35:43,896 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-18 19:35:43,903 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-18 19:35:43,904 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-18 19:35:43,910 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-18 19:35:43,912 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-18 19:35:43,912 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-18 19:35:43,913 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-18 19:35:43,914 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-18 19:35:43,918 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-18 19:35:43,919 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-18 19:35:43,990 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 19:35:43,992 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 19:35:44,051 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:35:44,509 INFO L208 MainTranslator]: Completed translation [2022-11-18 19:35:44,510 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:35:44 WrapperNode [2022-11-18 19:35:44,511 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 19:35:44,513 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 19:35:44,513 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 19:35:44,513 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 19:35:44,522 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:35:44" (1/1) ... [2022-11-18 19:35:44,649 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:35:44" (1/1) ... [2022-11-18 19:35:44,749 INFO L138 Inliner]: procedures = 689, calls = 1496, calls flagged for inlining = 55, calls inlined = 9, statements flattened = 597 [2022-11-18 19:35:44,749 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 19:35:44,750 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 19:35:44,750 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 19:35:44,751 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 19:35:44,760 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:35:44" (1/1) ... [2022-11-18 19:35:44,760 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:35:44" (1/1) ... [2022-11-18 19:35:44,768 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:35:44" (1/1) ... [2022-11-18 19:35:44,768 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:35:44" (1/1) ... [2022-11-18 19:35:44,818 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:35:44" (1/1) ... [2022-11-18 19:35:44,824 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:35:44" (1/1) ... [2022-11-18 19:35:44,833 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:35:44" (1/1) ... [2022-11-18 19:35:44,837 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:35:44" (1/1) ... [2022-11-18 19:35:44,848 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 19:35:44,849 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 19:35:44,849 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 19:35:44,850 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 19:35:44,851 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:35:44" (1/1) ... [2022-11-18 19:35:44,858 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:35:44,872 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e40075-6577-41eb-aecd-10c7a982b5fe/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:35:44,889 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e40075-6577-41eb-aecd-10c7a982b5fe/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 19:35:44,918 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e40075-6577-41eb-aecd-10c7a982b5fe/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 19:35:44,978 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2022-11-18 19:35:44,979 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2022-11-18 19:35:44,979 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 19:35:44,979 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2022-11-18 19:35:44,979 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2022-11-18 19:35:44,980 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2022-11-18 19:35:44,980 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2022-11-18 19:35:44,980 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-11-18 19:35:44,981 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-11-18 19:35:44,981 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 19:35:44,981 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2022-11-18 19:35:44,983 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2022-11-18 19:35:44,983 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-18 19:35:44,984 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-18 19:35:44,985 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-18 19:35:44,985 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 19:35:44,985 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-18 19:35:44,985 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 19:35:44,986 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 19:35:44,986 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_clean_up [2022-11-18 19:35:44,986 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_clean_up [2022-11-18 19:35:44,987 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-11-18 19:35:44,987 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-11-18 19:35:44,988 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2022-11-18 19:35:44,988 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2022-11-18 19:35:44,989 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_is_valid [2022-11-18 19:35:44,989 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_is_valid [2022-11-18 19:35:44,989 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_release [2022-11-18 19:35:44,989 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_release [2022-11-18 19:35:44,990 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-18 19:35:44,990 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-18 19:35:44,991 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 19:35:44,991 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-18 19:35:44,991 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-18 19:35:44,991 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2022-11-18 19:35:44,992 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2022-11-18 19:35:44,992 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2022-11-18 19:35:44,992 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2022-11-18 19:35:44,992 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 19:35:44,993 INFO L130 BoogieDeclarations]: Found specification of procedure memset_impl [2022-11-18 19:35:44,993 INFO L138 BoogieDeclarations]: Found implementation of procedure memset_impl [2022-11-18 19:35:44,993 INFO L130 BoogieDeclarations]: Found specification of procedure my_memset [2022-11-18 19:35:44,993 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memset [2022-11-18 19:35:44,994 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2022-11-18 19:35:44,994 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2022-11-18 19:35:44,994 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 19:35:45,464 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 19:35:45,467 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 19:35:46,858 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 19:35:46,872 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 19:35:46,872 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-18 19:35:46,875 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:35:46 BoogieIcfgContainer [2022-11-18 19:35:46,876 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 19:35:46,879 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 19:35:46,880 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 19:35:46,884 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 19:35:46,884 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 07:35:41" (1/3) ... [2022-11-18 19:35:46,885 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4202dec4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:35:46, skipping insertion in model container [2022-11-18 19:35:46,886 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:35:44" (2/3) ... [2022-11-18 19:35:46,886 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4202dec4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:35:46, skipping insertion in model container [2022-11-18 19:35:46,887 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:35:46" (3/3) ... [2022-11-18 19:35:46,888 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_priority_queue_clean_up_harness.i [2022-11-18 19:35:46,916 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 19:35:46,916 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-18 19:35:47,021 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 19:35:47,038 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;@65127c54, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 19:35:47,038 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-18 19:35:47,044 INFO L276 IsEmpty]: Start isEmpty. Operand has 165 states, 112 states have (on average 1.2678571428571428) internal successors, (142), 113 states have internal predecessors, (142), 35 states have call successors, (35), 17 states have call predecessors, (35), 17 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2022-11-18 19:35:47,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-11-18 19:35:47,098 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:35:47,099 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 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] [2022-11-18 19:35:47,101 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:35:47,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:35:47,113 INFO L85 PathProgramCache]: Analyzing trace with hash 432166812, now seen corresponding path program 1 times [2022-11-18 19:35:47,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:35:47,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970680794] [2022-11-18 19:35:47,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:35:47,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:35:47,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:47,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 19:35:47,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:47,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-18 19:35:47,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:47,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-18 19:35:47,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:47,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-18 19:35:47,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:47,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:35:47,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:47,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 19:35:47,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:47,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-18 19:35:47,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:48,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:35:48,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:48,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 19:35:48,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:48,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-18 19:35:48,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:48,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-18 19:35:48,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:48,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-18 19:35:48,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:48,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 19:35:48,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:48,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 19:35:48,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:48,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-18 19:35:48,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:48,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-18 19:35:48,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:48,253 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-11-18 19:35:48,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:35:48,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970680794] [2022-11-18 19:35:48,255 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970680794] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:35:48,256 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:35:48,257 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 19:35:48,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721786340] [2022-11-18 19:35:48,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:35:48,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:35:48,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:35:48,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:35:48,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:35:48,314 INFO L87 Difference]: Start difference. First operand has 165 states, 112 states have (on average 1.2678571428571428) internal successors, (142), 113 states have internal predecessors, (142), 35 states have call successors, (35), 17 states have call predecessors, (35), 17 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 2 states have internal predecessors, (42), 2 states have call successors, (15), 4 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-18 19:35:49,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:35:49,054 INFO L93 Difference]: Finished difference Result 361 states and 504 transitions. [2022-11-18 19:35:49,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 19:35:49,057 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 2 states have internal predecessors, (42), 2 states have call successors, (15), 4 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 105 [2022-11-18 19:35:49,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:35:49,069 INFO L225 Difference]: With dead ends: 361 [2022-11-18 19:35:49,069 INFO L226 Difference]: Without dead ends: 202 [2022-11-18 19:35:49,074 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:35:49,078 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 89 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 258 SdHoareTripleChecker+Invalid, 262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-18 19:35:49,079 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 258 Invalid, 262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-18 19:35:49,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2022-11-18 19:35:49,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 160. [2022-11-18 19:35:49,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 107 states have (on average 1.233644859813084) internal successors, (132), 109 states have internal predecessors, (132), 35 states have call successors, (35), 17 states have call predecessors, (35), 17 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2022-11-18 19:35:49,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 201 transitions. [2022-11-18 19:35:49,142 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 201 transitions. Word has length 105 [2022-11-18 19:35:49,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:35:49,143 INFO L495 AbstractCegarLoop]: Abstraction has 160 states and 201 transitions. [2022-11-18 19:35:49,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 2 states have internal predecessors, (42), 2 states have call successors, (15), 4 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-18 19:35:49,143 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 201 transitions. [2022-11-18 19:35:49,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-11-18 19:35:49,147 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:35:49,148 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 3, 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] [2022-11-18 19:35:49,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 19:35:49,148 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:35:49,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:35:49,149 INFO L85 PathProgramCache]: Analyzing trace with hash 1130672400, now seen corresponding path program 1 times [2022-11-18 19:35:49,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:35:49,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061616936] [2022-11-18 19:35:49,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:35:49,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:35:49,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:49,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 19:35:49,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:49,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-18 19:35:49,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:49,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-18 19:35:49,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:49,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-18 19:35:49,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:49,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:35:49,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:49,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 19:35:49,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:49,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-18 19:35:49,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:49,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:35:49,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:49,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 19:35:49,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:49,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-18 19:35:49,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:49,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-18 19:35:49,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:49,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-18 19:35:50,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:50,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 19:35:50,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:50,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 19:35:50,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:50,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 19:35:50,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:50,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 19:35:50,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:50,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 19:35:50,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:50,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-11-18 19:35:50,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:50,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-11-18 19:35:50,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:50,153 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2022-11-18 19:35:50,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:35:50,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061616936] [2022-11-18 19:35:50,155 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061616936] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:35:50,155 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:35:50,155 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-18 19:35:50,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519516242] [2022-11-18 19:35:50,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:35:50,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 19:35:50,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:35:50,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 19:35:50,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:35:50,164 INFO L87 Difference]: Start difference. First operand 160 states and 201 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (18), 5 states have call predecessors, (18), 2 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-18 19:35:51,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:35:51,129 INFO L93 Difference]: Finished difference Result 341 states and 448 transitions. [2022-11-18 19:35:51,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 19:35:51,132 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (18), 5 states have call predecessors, (18), 2 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 122 [2022-11-18 19:35:51,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:35:51,135 INFO L225 Difference]: With dead ends: 341 [2022-11-18 19:35:51,135 INFO L226 Difference]: Without dead ends: 245 [2022-11-18 19:35:51,136 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-11-18 19:35:51,137 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 282 mSDsluCounter, 417 mSDsCounter, 0 mSdLazyCounter, 626 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 306 SdHoareTripleChecker+Valid, 551 SdHoareTripleChecker+Invalid, 748 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 626 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-18 19:35:51,138 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [306 Valid, 551 Invalid, 748 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 626 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-18 19:35:51,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2022-11-18 19:35:51,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 160. [2022-11-18 19:35:51,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 107 states have (on average 1.2242990654205608) internal successors, (131), 109 states have internal predecessors, (131), 35 states have call successors, (35), 17 states have call predecessors, (35), 17 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2022-11-18 19:35:51,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 200 transitions. [2022-11-18 19:35:51,165 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 200 transitions. Word has length 122 [2022-11-18 19:35:51,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:35:51,166 INFO L495 AbstractCegarLoop]: Abstraction has 160 states and 200 transitions. [2022-11-18 19:35:51,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (18), 5 states have call predecessors, (18), 2 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-18 19:35:51,167 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 200 transitions. [2022-11-18 19:35:51,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-11-18 19:35:51,170 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:35:51,170 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 3, 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] [2022-11-18 19:35:51,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 19:35:51,170 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:35:51,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:35:51,171 INFO L85 PathProgramCache]: Analyzing trace with hash -2103837312, now seen corresponding path program 1 times [2022-11-18 19:35:51,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:35:51,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278920007] [2022-11-18 19:35:51,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:35:51,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:35:51,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:51,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 19:35:51,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:51,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-18 19:35:51,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:51,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-18 19:35:51,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:51,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-18 19:35:51,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:51,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:35:51,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:51,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 19:35:51,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:51,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-18 19:35:51,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:51,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:35:51,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:51,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 19:35:51,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:51,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-18 19:35:51,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:51,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 19:35:51,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:51,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-18 19:35:51,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:52,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-18 19:35:52,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:52,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 19:35:52,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:52,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 19:35:52,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:52,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 19:35:52,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:52,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 19:35:52,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:52,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 19:35:52,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:52,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-11-18 19:35:52,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:52,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-11-18 19:35:52,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:52,123 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2022-11-18 19:35:52,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:35:52,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278920007] [2022-11-18 19:35:52,125 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278920007] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:35:52,125 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:35:52,125 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-18 19:35:52,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97967908] [2022-11-18 19:35:52,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:35:52,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 19:35:52,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:35:52,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 19:35:52,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-18 19:35:52,129 INFO L87 Difference]: Start difference. First operand 160 states and 200 transitions. Second operand has 10 states, 10 states have (on average 5.6) internal successors, (56), 7 states have internal predecessors, (56), 4 states have call successors, (19), 5 states have call predecessors, (19), 3 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) [2022-11-18 19:35:53,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:35:53,336 INFO L93 Difference]: Finished difference Result 371 states and 489 transitions. [2022-11-18 19:35:53,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-18 19:35:53,337 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.6) internal successors, (56), 7 states have internal predecessors, (56), 4 states have call successors, (19), 5 states have call predecessors, (19), 3 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) Word has length 130 [2022-11-18 19:35:53,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:35:53,339 INFO L225 Difference]: With dead ends: 371 [2022-11-18 19:35:53,339 INFO L226 Difference]: Without dead ends: 226 [2022-11-18 19:35:53,340 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2022-11-18 19:35:53,341 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 243 mSDsluCounter, 674 mSDsCounter, 0 mSdLazyCounter, 994 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 266 SdHoareTripleChecker+Valid, 801 SdHoareTripleChecker+Invalid, 1072 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 994 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:35:53,342 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [266 Valid, 801 Invalid, 1072 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 994 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-18 19:35:53,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2022-11-18 19:35:53,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 162. [2022-11-18 19:35:53,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 108 states have (on average 1.2222222222222223) internal successors, (132), 111 states have internal predecessors, (132), 35 states have call successors, (35), 17 states have call predecessors, (35), 18 states have return successors, (36), 34 states have call predecessors, (36), 34 states have call successors, (36) [2022-11-18 19:35:53,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 203 transitions. [2022-11-18 19:35:53,363 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 203 transitions. Word has length 130 [2022-11-18 19:35:53,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:35:53,363 INFO L495 AbstractCegarLoop]: Abstraction has 162 states and 203 transitions. [2022-11-18 19:35:53,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.6) internal successors, (56), 7 states have internal predecessors, (56), 4 states have call successors, (19), 5 states have call predecessors, (19), 3 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) [2022-11-18 19:35:53,364 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 203 transitions. [2022-11-18 19:35:53,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-11-18 19:35:53,366 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:35:53,366 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 3, 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] [2022-11-18 19:35:53,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 19:35:53,367 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:35:53,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:35:53,367 INFO L85 PathProgramCache]: Analyzing trace with hash -209170488, now seen corresponding path program 1 times [2022-11-18 19:35:53,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:35:53,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937389975] [2022-11-18 19:35:53,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:35:53,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:35:53,488 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:35:53,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1695399905] [2022-11-18 19:35:53,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:35:53,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:35:53,492 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e40075-6577-41eb-aecd-10c7a982b5fe/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:35:53,497 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e40075-6577-41eb-aecd-10c7a982b5fe/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:35:53,509 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e40075-6577-41eb-aecd-10c7a982b5fe/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 19:35:54,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:54,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 2424 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-18 19:35:54,047 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:35:54,215 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-11-18 19:35:54,216 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:35:54,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:35:54,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937389975] [2022-11-18 19:35:54,216 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:35:54,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1695399905] [2022-11-18 19:35:54,217 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1695399905] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:35:54,217 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:35:54,218 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 19:35:54,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880791488] [2022-11-18 19:35:54,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:35:54,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 19:35:54,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:35:54,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 19:35:54,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 19:35:54,222 INFO L87 Difference]: Start difference. First operand 162 states and 203 transitions. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 4 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) [2022-11-18 19:35:54,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:35:54,440 INFO L93 Difference]: Finished difference Result 261 states and 324 transitions. [2022-11-18 19:35:54,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 19:35:54,441 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 4 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) Word has length 145 [2022-11-18 19:35:54,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:35:54,445 INFO L225 Difference]: With dead ends: 261 [2022-11-18 19:35:54,446 INFO L226 Difference]: Without dead ends: 162 [2022-11-18 19:35:54,446 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-11-18 19:35:54,449 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 235 mSDsluCounter, 612 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 781 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:35:54,450 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [235 Valid, 781 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 19:35:54,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2022-11-18 19:35:54,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2022-11-18 19:35:54,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 108 states have (on average 1.212962962962963) internal successors, (131), 111 states have internal predecessors, (131), 35 states have call successors, (35), 17 states have call predecessors, (35), 18 states have return successors, (36), 34 states have call predecessors, (36), 34 states have call successors, (36) [2022-11-18 19:35:54,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 202 transitions. [2022-11-18 19:35:54,484 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 202 transitions. Word has length 145 [2022-11-18 19:35:54,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:35:54,486 INFO L495 AbstractCegarLoop]: Abstraction has 162 states and 202 transitions. [2022-11-18 19:35:54,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 4 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) [2022-11-18 19:35:54,486 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 202 transitions. [2022-11-18 19:35:54,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-11-18 19:35:54,491 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:35:54,491 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:35:54,507 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e40075-6577-41eb-aecd-10c7a982b5fe/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-18 19:35:54,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e40075-6577-41eb-aecd-10c7a982b5fe/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:35:54,707 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:35:54,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:35:54,707 INFO L85 PathProgramCache]: Analyzing trace with hash 1337604585, now seen corresponding path program 1 times [2022-11-18 19:35:54,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:35:54,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108437926] [2022-11-18 19:35:54,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:35:54,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:35:54,796 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:35:54,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1646607889] [2022-11-18 19:35:54,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:35:54,797 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:35:54,797 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e40075-6577-41eb-aecd-10c7a982b5fe/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:35:54,798 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e40075-6577-41eb-aecd-10c7a982b5fe/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:35:54,811 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e40075-6577-41eb-aecd-10c7a982b5fe/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 19:35:55,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:55,394 INFO L263 TraceCheckSpWp]: Trace formula consists of 2496 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-18 19:35:55,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:35:55,554 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-18 19:35:55,555 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:35:55,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:35:55,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108437926] [2022-11-18 19:35:55,556 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:35:55,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1646607889] [2022-11-18 19:35:55,556 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1646607889] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:35:55,556 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:35:55,556 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-18 19:35:55,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784073222] [2022-11-18 19:35:55,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:35:55,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 19:35:55,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:35:55,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 19:35:55,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-18 19:35:55,559 INFO L87 Difference]: Start difference. First operand 162 states and 202 transitions. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 5 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (21), 5 states have call predecessors, (21), 5 states have call successors, (21) [2022-11-18 19:35:55,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:35:55,904 INFO L93 Difference]: Finished difference Result 274 states and 342 transitions. [2022-11-18 19:35:55,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 19:35:55,905 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 5 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (21), 5 states have call predecessors, (21), 5 states have call successors, (21) Word has length 161 [2022-11-18 19:35:55,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:35:55,906 INFO L225 Difference]: With dead ends: 274 [2022-11-18 19:35:55,906 INFO L226 Difference]: Without dead ends: 162 [2022-11-18 19:35:55,907 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2022-11-18 19:35:55,908 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 300 mSDsluCounter, 880 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 302 SdHoareTripleChecker+Valid, 1041 SdHoareTripleChecker+Invalid, 307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:35:55,908 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [302 Valid, 1041 Invalid, 307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 266 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 19:35:55,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2022-11-18 19:35:55,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2022-11-18 19:35:55,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 108 states have (on average 1.212962962962963) internal successors, (131), 111 states have internal predecessors, (131), 35 states have call successors, (35), 17 states have call predecessors, (35), 18 states have return successors, (35), 34 states have call predecessors, (35), 34 states have call successors, (35) [2022-11-18 19:35:55,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 201 transitions. [2022-11-18 19:35:55,924 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 201 transitions. Word has length 161 [2022-11-18 19:35:55,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:35:55,925 INFO L495 AbstractCegarLoop]: Abstraction has 162 states and 201 transitions. [2022-11-18 19:35:55,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 5 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (21), 5 states have call predecessors, (21), 5 states have call successors, (21) [2022-11-18 19:35:55,925 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 201 transitions. [2022-11-18 19:35:55,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-11-18 19:35:55,928 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:35:55,928 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 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, 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] [2022-11-18 19:35:55,944 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e40075-6577-41eb-aecd-10c7a982b5fe/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-18 19:35:56,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e40075-6577-41eb-aecd-10c7a982b5fe/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:35:56,134 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:35:56,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:35:56,134 INFO L85 PathProgramCache]: Analyzing trace with hash 996052163, now seen corresponding path program 1 times [2022-11-18 19:35:56,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:35:56,134 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445303394] [2022-11-18 19:35:56,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:35:56,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:35:56,246 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:35:56,246 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1610789217] [2022-11-18 19:35:56,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:35:56,248 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:35:56,248 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e40075-6577-41eb-aecd-10c7a982b5fe/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:35:56,249 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e40075-6577-41eb-aecd-10c7a982b5fe/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:35:56,273 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e40075-6577-41eb-aecd-10c7a982b5fe/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 19:35:56,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:56,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 2637 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-18 19:35:56,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:35:57,052 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2022-11-18 19:35:57,053 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:35:57,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:35:57,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445303394] [2022-11-18 19:35:57,053 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:35:57,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1610789217] [2022-11-18 19:35:57,054 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1610789217] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:35:57,054 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:35:57,054 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 19:35:57,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733431740] [2022-11-18 19:35:57,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:35:57,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:35:57,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:35:57,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:35:57,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:35:57,056 INFO L87 Difference]: Start difference. First operand 162 states and 201 transitions. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-18 19:35:57,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:35:57,351 INFO L93 Difference]: Finished difference Result 286 states and 356 transitions. [2022-11-18 19:35:57,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 19:35:57,352 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 176 [2022-11-18 19:35:57,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:35:57,354 INFO L225 Difference]: With dead ends: 286 [2022-11-18 19:35:57,354 INFO L226 Difference]: Without dead ends: 180 [2022-11-18 19:35:57,355 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-18 19:35:57,356 INFO L413 NwaCegarLoop]: 193 mSDtfsCounter, 23 mSDsluCounter, 700 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 893 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:35:57,356 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 893 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 19:35:57,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2022-11-18 19:35:57,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 166. [2022-11-18 19:35:57,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 112 states have (on average 1.2142857142857142) internal successors, (136), 115 states have internal predecessors, (136), 35 states have call successors, (35), 17 states have call predecessors, (35), 18 states have return successors, (35), 34 states have call predecessors, (35), 34 states have call successors, (35) [2022-11-18 19:35:57,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 206 transitions. [2022-11-18 19:35:57,372 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 206 transitions. Word has length 176 [2022-11-18 19:35:57,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:35:57,372 INFO L495 AbstractCegarLoop]: Abstraction has 166 states and 206 transitions. [2022-11-18 19:35:57,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-18 19:35:57,373 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 206 transitions. [2022-11-18 19:35:57,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-11-18 19:35:57,375 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:35:57,376 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 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, 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] [2022-11-18 19:35:57,388 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e40075-6577-41eb-aecd-10c7a982b5fe/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-18 19:35:57,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e40075-6577-41eb-aecd-10c7a982b5fe/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:35:57,587 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:35:57,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:35:57,588 INFO L85 PathProgramCache]: Analyzing trace with hash 28701509, now seen corresponding path program 1 times [2022-11-18 19:35:57,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:35:57,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10071728] [2022-11-18 19:35:57,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:35:57,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:35:57,676 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:35:57,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [757127759] [2022-11-18 19:35:57,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:35:57,677 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:35:57,677 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e40075-6577-41eb-aecd-10c7a982b5fe/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:35:57,678 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e40075-6577-41eb-aecd-10c7a982b5fe/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:35:57,682 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e40075-6577-41eb-aecd-10c7a982b5fe/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-18 19:35:58,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:58,301 INFO L263 TraceCheckSpWp]: Trace formula consists of 2634 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 19:35:58,306 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:35:58,324 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2022-11-18 19:35:58,324 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:35:58,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:35:58,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10071728] [2022-11-18 19:35:58,324 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:35:58,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [757127759] [2022-11-18 19:35:58,325 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [757127759] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:35:58,325 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:35:58,325 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 19:35:58,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196873757] [2022-11-18 19:35:58,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:35:58,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:35:58,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:35:58,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:35:58,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:35:58,327 INFO L87 Difference]: Start difference. First operand 166 states and 206 transitions. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-18 19:35:58,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:35:58,362 INFO L93 Difference]: Finished difference Result 274 states and 339 transitions. [2022-11-18 19:35:58,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:35:58,363 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 176 [2022-11-18 19:35:58,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:35:58,365 INFO L225 Difference]: With dead ends: 274 [2022-11-18 19:35:58,365 INFO L226 Difference]: Without dead ends: 170 [2022-11-18 19:35:58,366 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:35:58,366 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 3 mSDsluCounter, 387 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 583 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 [2022-11-18 19:35:58,367 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 583 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 19:35:58,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2022-11-18 19:35:58,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 168. [2022-11-18 19:35:58,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 114 states have (on average 1.2105263157894737) internal successors, (138), 117 states have internal predecessors, (138), 35 states have call successors, (35), 17 states have call predecessors, (35), 18 states have return successors, (35), 34 states have call predecessors, (35), 34 states have call successors, (35) [2022-11-18 19:35:58,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 208 transitions. [2022-11-18 19:35:58,381 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 208 transitions. Word has length 176 [2022-11-18 19:35:58,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:35:58,381 INFO L495 AbstractCegarLoop]: Abstraction has 168 states and 208 transitions. [2022-11-18 19:35:58,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-18 19:35:58,382 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 208 transitions. [2022-11-18 19:35:58,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-11-18 19:35:58,385 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:35:58,385 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 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, 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] [2022-11-18 19:35:58,401 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e40075-6577-41eb-aecd-10c7a982b5fe/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-18 19:35:58,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e40075-6577-41eb-aecd-10c7a982b5fe/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:35:58,601 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:35:58,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:35:58,602 INFO L85 PathProgramCache]: Analyzing trace with hash -463924665, now seen corresponding path program 1 times [2022-11-18 19:35:58,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:35:58,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272088662] [2022-11-18 19:35:58,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:35:58,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:35:58,692 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:35:58,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [894707078] [2022-11-18 19:35:58,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:35:58,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:35:58,693 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e40075-6577-41eb-aecd-10c7a982b5fe/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:35:58,694 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e40075-6577-41eb-aecd-10c7a982b5fe/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:35:58,717 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e40075-6577-41eb-aecd-10c7a982b5fe/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-18 19:35:59,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:59,345 INFO L263 TraceCheckSpWp]: Trace formula consists of 2629 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-18 19:35:59,350 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:35:59,412 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2022-11-18 19:35:59,412 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:35:59,752 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2022-11-18 19:35:59,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:35:59,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272088662] [2022-11-18 19:35:59,753 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:35:59,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [894707078] [2022-11-18 19:35:59,753 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [894707078] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-18 19:35:59,753 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 19:35:59,754 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2022-11-18 19:35:59,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820298077] [2022-11-18 19:35:59,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:35:59,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:35:59,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:35:59,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:35:59,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2022-11-18 19:35:59,756 INFO L87 Difference]: Start difference. First operand 168 states and 208 transitions. Second operand has 6 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 1 states have call successors, (21) [2022-11-18 19:35:59,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:35:59,823 INFO L93 Difference]: Finished difference Result 178 states and 222 transitions. [2022-11-18 19:35:59,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 19:35:59,824 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 1 states have call successors, (21) Word has length 176 [2022-11-18 19:35:59,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:35:59,826 INFO L225 Difference]: With dead ends: 178 [2022-11-18 19:35:59,826 INFO L226 Difference]: Without dead ends: 176 [2022-11-18 19:35:59,827 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 351 GetRequests, 340 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2022-11-18 19:35:59,828 INFO L413 NwaCegarLoop]: 197 mSDtfsCounter, 6 mSDsluCounter, 773 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 970 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:35:59,828 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 970 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 19:35:59,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2022-11-18 19:35:59,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 175. [2022-11-18 19:35:59,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 118 states have (on average 1.2033898305084745) internal successors, (142), 122 states have internal predecessors, (142), 36 states have call successors, (36), 18 states have call predecessors, (36), 20 states have return successors, (41), 35 states have call predecessors, (41), 35 states have call successors, (41) [2022-11-18 19:35:59,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 219 transitions. [2022-11-18 19:35:59,844 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 219 transitions. Word has length 176 [2022-11-18 19:35:59,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:35:59,845 INFO L495 AbstractCegarLoop]: Abstraction has 175 states and 219 transitions. [2022-11-18 19:35:59,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 1 states have call successors, (21) [2022-11-18 19:35:59,845 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 219 transitions. [2022-11-18 19:35:59,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-11-18 19:35:59,848 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:35:59,848 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 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, 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] [2022-11-18 19:35:59,867 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e40075-6577-41eb-aecd-10c7a982b5fe/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-18 19:36:00,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e40075-6577-41eb-aecd-10c7a982b5fe/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:36:00,060 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:36:00,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:36:00,060 INFO L85 PathProgramCache]: Analyzing trace with hash 1104137534, now seen corresponding path program 1 times [2022-11-18 19:36:00,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:36:00,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105399348] [2022-11-18 19:36:00,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:36:00,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:36:00,152 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:36:00,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [454432234] [2022-11-18 19:36:00,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:36:00,153 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:36:00,153 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e40075-6577-41eb-aecd-10c7a982b5fe/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:36:00,154 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e40075-6577-41eb-aecd-10c7a982b5fe/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:36:00,173 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e40075-6577-41eb-aecd-10c7a982b5fe/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-18 19:36:00,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:00,809 INFO L263 TraceCheckSpWp]: Trace formula consists of 2632 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-18 19:36:00,814 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:36:00,864 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2022-11-18 19:36:00,864 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:36:00,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:36:00,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105399348] [2022-11-18 19:36:00,865 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:36:00,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [454432234] [2022-11-18 19:36:00,865 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [454432234] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:36:00,865 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:36:00,865 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 19:36:00,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647737400] [2022-11-18 19:36:00,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:36:00,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:36:00,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:36:00,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:36:00,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:36:00,868 INFO L87 Difference]: Start difference. First operand 175 states and 219 transitions. Second operand has 6 states, 5 states have (on average 16.8) internal successors, (84), 6 states have internal predecessors, (84), 4 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) [2022-11-18 19:36:00,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:36:00,941 INFO L93 Difference]: Finished difference Result 281 states and 350 transitions. [2022-11-18 19:36:00,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 19:36:00,942 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 16.8) internal successors, (84), 6 states have internal predecessors, (84), 4 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) Word has length 176 [2022-11-18 19:36:00,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:36:00,944 INFO L225 Difference]: With dead ends: 281 [2022-11-18 19:36:00,944 INFO L226 Difference]: Without dead ends: 175 [2022-11-18 19:36:00,945 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:36:00,946 INFO L413 NwaCegarLoop]: 193 mSDtfsCounter, 13 mSDsluCounter, 751 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 944 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:36:00,946 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 944 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 19:36:00,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2022-11-18 19:36:00,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 175. [2022-11-18 19:36:00,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 118 states have (on average 1.194915254237288) internal successors, (141), 122 states have internal predecessors, (141), 36 states have call successors, (36), 18 states have call predecessors, (36), 20 states have return successors, (41), 35 states have call predecessors, (41), 35 states have call successors, (41) [2022-11-18 19:36:00,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 218 transitions. [2022-11-18 19:36:00,960 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 218 transitions. Word has length 176 [2022-11-18 19:36:00,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:36:00,960 INFO L495 AbstractCegarLoop]: Abstraction has 175 states and 218 transitions. [2022-11-18 19:36:00,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 16.8) internal successors, (84), 6 states have internal predecessors, (84), 4 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) [2022-11-18 19:36:00,961 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 218 transitions. [2022-11-18 19:36:00,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-11-18 19:36:00,963 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:36:00,964 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 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, 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] [2022-11-18 19:36:00,981 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e40075-6577-41eb-aecd-10c7a982b5fe/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-18 19:36:01,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e40075-6577-41eb-aecd-10c7a982b5fe/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:36:01,175 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:36:01,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:36:01,175 INFO L85 PathProgramCache]: Analyzing trace with hash -1406424536, now seen corresponding path program 1 times [2022-11-18 19:36:01,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:36:01,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490290042] [2022-11-18 19:36:01,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:36:01,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:36:01,252 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:36:01,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [432333900] [2022-11-18 19:36:01,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:36:01,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:36:01,253 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e40075-6577-41eb-aecd-10c7a982b5fe/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:36:01,254 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e40075-6577-41eb-aecd-10c7a982b5fe/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:36:01,277 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e40075-6577-41eb-aecd-10c7a982b5fe/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-18 19:36:01,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:01,891 INFO L263 TraceCheckSpWp]: Trace formula consists of 2639 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-18 19:36:01,896 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:36:01,955 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2022-11-18 19:36:01,955 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:36:01,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:36:01,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490290042] [2022-11-18 19:36:01,956 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:36:01,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [432333900] [2022-11-18 19:36:01,956 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [432333900] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:36:01,956 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:36:01,956 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 19:36:01,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541598502] [2022-11-18 19:36:01,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:36:01,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 19:36:01,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:36:01,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 19:36:01,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-18 19:36:01,958 INFO L87 Difference]: Start difference. First operand 175 states and 218 transitions. Second operand has 7 states, 6 states have (on average 14.166666666666666) internal successors, (85), 7 states have internal predecessors, (85), 4 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) [2022-11-18 19:36:02,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:36:02,037 INFO L93 Difference]: Finished difference Result 283 states and 351 transitions. [2022-11-18 19:36:02,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 19:36:02,038 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 14.166666666666666) internal successors, (85), 7 states have internal predecessors, (85), 4 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) Word has length 177 [2022-11-18 19:36:02,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:36:02,039 INFO L225 Difference]: With dead ends: 283 [2022-11-18 19:36:02,039 INFO L226 Difference]: Without dead ends: 177 [2022-11-18 19:36:02,040 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-18 19:36:02,041 INFO L413 NwaCegarLoop]: 192 mSDtfsCounter, 19 mSDsluCounter, 750 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 942 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:36:02,041 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 942 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 19:36:02,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2022-11-18 19:36:02,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 176. [2022-11-18 19:36:02,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 119 states have (on average 1.1932773109243697) internal successors, (142), 123 states have internal predecessors, (142), 36 states have call successors, (36), 18 states have call predecessors, (36), 20 states have return successors, (41), 35 states have call predecessors, (41), 35 states have call successors, (41) [2022-11-18 19:36:02,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 219 transitions. [2022-11-18 19:36:02,054 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 219 transitions. Word has length 177 [2022-11-18 19:36:02,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:36:02,055 INFO L495 AbstractCegarLoop]: Abstraction has 176 states and 219 transitions. [2022-11-18 19:36:02,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 14.166666666666666) internal successors, (85), 7 states have internal predecessors, (85), 4 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) [2022-11-18 19:36:02,056 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 219 transitions. [2022-11-18 19:36:02,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-11-18 19:36:02,058 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:36:02,058 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 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, 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] [2022-11-18 19:36:02,074 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e40075-6577-41eb-aecd-10c7a982b5fe/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-18 19:36:02,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e40075-6577-41eb-aecd-10c7a982b5fe/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-18 19:36:02,269 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:36:02,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:36:02,269 INFO L85 PathProgramCache]: Analyzing trace with hash 1080671750, now seen corresponding path program 1 times [2022-11-18 19:36:02,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:36:02,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233840654] [2022-11-18 19:36:02,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:36:02,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:36:02,405 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:36:02,405 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1637275693] [2022-11-18 19:36:02,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:36:02,406 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:36:02,406 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e40075-6577-41eb-aecd-10c7a982b5fe/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:36:02,407 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e40075-6577-41eb-aecd-10c7a982b5fe/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:36:02,433 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e40075-6577-41eb-aecd-10c7a982b5fe/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-18 19:36:03,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:03,048 INFO L263 TraceCheckSpWp]: Trace formula consists of 2658 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-18 19:36:03,053 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:36:03,099 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2022-11-18 19:36:03,099 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:36:03,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:36:03,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233840654] [2022-11-18 19:36:03,100 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:36:03,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1637275693] [2022-11-18 19:36:03,100 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1637275693] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:36:03,100 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:36:03,100 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 19:36:03,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725804246] [2022-11-18 19:36:03,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:36:03,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:36:03,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:36:03,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:36:03,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:36:03,103 INFO L87 Difference]: Start difference. First operand 176 states and 219 transitions. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-18 19:36:03,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:36:03,179 INFO L93 Difference]: Finished difference Result 293 states and 372 transitions. [2022-11-18 19:36:03,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 19:36:03,180 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 179 [2022-11-18 19:36:03,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:36:03,182 INFO L225 Difference]: With dead ends: 293 [2022-11-18 19:36:03,182 INFO L226 Difference]: Without dead ends: 181 [2022-11-18 19:36:03,183 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:36:03,184 INFO L413 NwaCegarLoop]: 190 mSDtfsCounter, 7 mSDsluCounter, 369 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 559 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:36:03,184 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 559 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 19:36:03,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2022-11-18 19:36:03,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 177. [2022-11-18 19:36:03,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 120 states have (on average 1.1916666666666667) internal successors, (143), 124 states have internal predecessors, (143), 36 states have call successors, (36), 18 states have call predecessors, (36), 20 states have return successors, (41), 35 states have call predecessors, (41), 35 states have call successors, (41) [2022-11-18 19:36:03,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 220 transitions. [2022-11-18 19:36:03,198 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 220 transitions. Word has length 179 [2022-11-18 19:36:03,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:36:03,198 INFO L495 AbstractCegarLoop]: Abstraction has 177 states and 220 transitions. [2022-11-18 19:36:03,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-18 19:36:03,199 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 220 transitions. [2022-11-18 19:36:03,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-11-18 19:36:03,202 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:36:03,202 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 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, 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] [2022-11-18 19:36:03,227 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e40075-6577-41eb-aecd-10c7a982b5fe/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-18 19:36:03,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e40075-6577-41eb-aecd-10c7a982b5fe/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:36:03,413 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:36:03,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:36:03,414 INFO L85 PathProgramCache]: Analyzing trace with hash 712361510, now seen corresponding path program 1 times [2022-11-18 19:36:03,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:36:03,414 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719269737] [2022-11-18 19:36:03,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:36:03,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:36:03,489 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:36:03,489 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [18008038] [2022-11-18 19:36:03,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:36:03,490 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:36:03,490 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e40075-6577-41eb-aecd-10c7a982b5fe/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:36:03,491 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e40075-6577-41eb-aecd-10c7a982b5fe/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:36:03,495 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e40075-6577-41eb-aecd-10c7a982b5fe/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-18 19:36:04,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:04,162 INFO L263 TraceCheckSpWp]: Trace formula consists of 2664 conjuncts, 39 conjunts are in the unsatisfiable core [2022-11-18 19:36:04,168 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:36:04,396 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 [2022-11-18 19:36:04,466 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2022-11-18 19:36:04,466 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:36:04,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:36:04,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719269737] [2022-11-18 19:36:04,467 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:36:04,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [18008038] [2022-11-18 19:36:04,467 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [18008038] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:36:04,467 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:36:04,467 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-18 19:36:04,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239920813] [2022-11-18 19:36:04,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:36:04,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 19:36:04,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:36:04,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 19:36:04,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-11-18 19:36:04,469 INFO L87 Difference]: Start difference. First operand 177 states and 220 transitions. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 6 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (22), 6 states have call predecessors, (22), 6 states have call successors, (22) [2022-11-18 19:36:05,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:36:05,112 INFO L93 Difference]: Finished difference Result 326 states and 410 transitions. [2022-11-18 19:36:05,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 19:36:05,113 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 6 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (22), 6 states have call predecessors, (22), 6 states have call successors, (22) Word has length 179 [2022-11-18 19:36:05,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:36:05,115 INFO L225 Difference]: With dead ends: 326 [2022-11-18 19:36:05,115 INFO L226 Difference]: Without dead ends: 205 [2022-11-18 19:36:05,116 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=81, Invalid=299, Unknown=0, NotChecked=0, Total=380 [2022-11-18 19:36:05,117 INFO L413 NwaCegarLoop]: 179 mSDtfsCounter, 116 mSDsluCounter, 1438 mSDsCounter, 0 mSdLazyCounter, 348 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 1617 SdHoareTripleChecker+Invalid, 359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 19:36:05,117 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 1617 Invalid, 359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 348 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-18 19:36:05,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2022-11-18 19:36:05,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 186. [2022-11-18 19:36:05,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 128 states have (on average 1.1953125) internal successors, (153), 132 states have internal predecessors, (153), 36 states have call successors, (36), 18 states have call predecessors, (36), 21 states have return successors, (44), 36 states have call predecessors, (44), 35 states have call successors, (44) [2022-11-18 19:36:05,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 233 transitions. [2022-11-18 19:36:05,136 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 233 transitions. Word has length 179 [2022-11-18 19:36:05,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:36:05,137 INFO L495 AbstractCegarLoop]: Abstraction has 186 states and 233 transitions. [2022-11-18 19:36:05,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 6 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (22), 6 states have call predecessors, (22), 6 states have call successors, (22) [2022-11-18 19:36:05,138 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 233 transitions. [2022-11-18 19:36:05,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-11-18 19:36:05,140 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:36:05,141 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 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, 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] [2022-11-18 19:36:05,158 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e40075-6577-41eb-aecd-10c7a982b5fe/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-18 19:36:05,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e40075-6577-41eb-aecd-10c7a982b5fe/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-18 19:36:05,353 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:36:05,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:36:05,354 INFO L85 PathProgramCache]: Analyzing trace with hash 1965868264, now seen corresponding path program 1 times [2022-11-18 19:36:05,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:36:05,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067425194] [2022-11-18 19:36:05,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:36:05,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:36:05,440 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:36:05,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [648153747] [2022-11-18 19:36:05,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:36:05,440 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:36:05,441 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e40075-6577-41eb-aecd-10c7a982b5fe/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:36:05,442 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e40075-6577-41eb-aecd-10c7a982b5fe/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:36:05,459 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e40075-6577-41eb-aecd-10c7a982b5fe/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-18 19:36:06,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:06,188 INFO L263 TraceCheckSpWp]: Trace formula consists of 2667 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-18 19:36:06,194 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:36:06,230 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2022-11-18 19:36:06,230 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:36:06,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:36:06,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067425194] [2022-11-18 19:36:06,231 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:36:06,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [648153747] [2022-11-18 19:36:06,231 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [648153747] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:36:06,231 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:36:06,232 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 19:36:06,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741227326] [2022-11-18 19:36:06,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:36:06,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:36:06,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:36:06,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:36:06,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:36:06,234 INFO L87 Difference]: Start difference. First operand 186 states and 233 transitions. Second operand has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 5 states have internal predecessors, (88), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-18 19:36:06,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:36:06,299 INFO L93 Difference]: Finished difference Result 301 states and 379 transitions. [2022-11-18 19:36:06,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 19:36:06,300 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 5 states have internal predecessors, (88), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) Word has length 179 [2022-11-18 19:36:06,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:36:06,302 INFO L225 Difference]: With dead ends: 301 [2022-11-18 19:36:06,302 INFO L226 Difference]: Without dead ends: 192 [2022-11-18 19:36:06,303 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-18 19:36:06,304 INFO L413 NwaCegarLoop]: 199 mSDtfsCounter, 4 mSDsluCounter, 774 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 973 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:36:06,304 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 973 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 19:36:06,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2022-11-18 19:36:06,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 188. [2022-11-18 19:36:06,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 130 states have (on average 1.1923076923076923) internal successors, (155), 133 states have internal predecessors, (155), 36 states have call successors, (36), 18 states have call predecessors, (36), 21 states have return successors, (44), 37 states have call predecessors, (44), 35 states have call successors, (44) [2022-11-18 19:36:06,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 235 transitions. [2022-11-18 19:36:06,320 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 235 transitions. Word has length 179 [2022-11-18 19:36:06,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:36:06,320 INFO L495 AbstractCegarLoop]: Abstraction has 188 states and 235 transitions. [2022-11-18 19:36:06,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 5 states have internal predecessors, (88), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-18 19:36:06,321 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 235 transitions. [2022-11-18 19:36:06,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-18 19:36:06,323 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:36:06,323 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 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, 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] [2022-11-18 19:36:06,341 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e40075-6577-41eb-aecd-10c7a982b5fe/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-18 19:36:06,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e40075-6577-41eb-aecd-10c7a982b5fe/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:36:06,536 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:36:06,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:36:06,536 INFO L85 PathProgramCache]: Analyzing trace with hash 1941254556, now seen corresponding path program 1 times [2022-11-18 19:36:06,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:36:06,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771353777] [2022-11-18 19:36:06,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:36:06,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:36:06,611 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:36:06,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1990910292] [2022-11-18 19:36:06,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:36:06,612 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:36:06,612 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e40075-6577-41eb-aecd-10c7a982b5fe/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:36:06,613 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e40075-6577-41eb-aecd-10c7a982b5fe/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:36:06,642 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e40075-6577-41eb-aecd-10c7a982b5fe/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-18 19:36:07,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:07,404 INFO L263 TraceCheckSpWp]: Trace formula consists of 2671 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-18 19:36:07,410 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:36:07,447 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2022-11-18 19:36:07,447 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:36:07,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:36:07,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771353777] [2022-11-18 19:36:07,448 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:36:07,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1990910292] [2022-11-18 19:36:07,449 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1990910292] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:36:07,450 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:36:07,450 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:36:07,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428140539] [2022-11-18 19:36:07,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:36:07,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 19:36:07,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:36:07,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 19:36:07,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:36:07,452 INFO L87 Difference]: Start difference. First operand 188 states and 235 transitions. Second operand has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-18 19:36:07,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:36:07,508 INFO L93 Difference]: Finished difference Result 316 states and 392 transitions. [2022-11-18 19:36:07,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 19:36:07,509 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 182 [2022-11-18 19:36:07,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:36:07,511 INFO L225 Difference]: With dead ends: 316 [2022-11-18 19:36:07,511 INFO L226 Difference]: Without dead ends: 198 [2022-11-18 19:36:07,512 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:36:07,513 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 9 mSDsluCounter, 575 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 771 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 [2022-11-18 19:36:07,514 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 771 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 19:36:07,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2022-11-18 19:36:07,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 192. [2022-11-18 19:36:07,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 134 states have (on average 1.1865671641791045) internal successors, (159), 137 states have internal predecessors, (159), 36 states have call successors, (36), 18 states have call predecessors, (36), 21 states have return successors, (44), 37 states have call predecessors, (44), 35 states have call successors, (44) [2022-11-18 19:36:07,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 239 transitions. [2022-11-18 19:36:07,538 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 239 transitions. Word has length 182 [2022-11-18 19:36:07,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:36:07,541 INFO L495 AbstractCegarLoop]: Abstraction has 192 states and 239 transitions. [2022-11-18 19:36:07,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-18 19:36:07,542 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 239 transitions. [2022-11-18 19:36:07,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-18 19:36:07,544 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:36:07,544 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 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, 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] [2022-11-18 19:36:07,558 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e40075-6577-41eb-aecd-10c7a982b5fe/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-18 19:36:07,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e40075-6577-41eb-aecd-10c7a982b5fe/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:36:07,757 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:36:07,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:36:07,758 INFO L85 PathProgramCache]: Analyzing trace with hash -1827476132, now seen corresponding path program 1 times [2022-11-18 19:36:07,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:36:07,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167584462] [2022-11-18 19:36:07,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:36:07,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:36:07,839 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:36:07,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2073689911] [2022-11-18 19:36:07,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:36:07,840 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:36:07,840 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e40075-6577-41eb-aecd-10c7a982b5fe/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:36:07,842 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e40075-6577-41eb-aecd-10c7a982b5fe/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:36:07,861 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e40075-6577-41eb-aecd-10c7a982b5fe/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-18 19:36:08,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:08,490 INFO L263 TraceCheckSpWp]: Trace formula consists of 2663 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 19:36:08,494 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:36:08,524 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-11-18 19:36:08,525 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:36:08,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:36:08,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167584462] [2022-11-18 19:36:08,525 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:36:08,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2073689911] [2022-11-18 19:36:08,526 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2073689911] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:36:08,526 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:36:08,526 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 19:36:08,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361547752] [2022-11-18 19:36:08,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:36:08,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:36:08,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:36:08,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:36:08,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:36:08,528 INFO L87 Difference]: Start difference. First operand 192 states and 239 transitions. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-18 19:36:08,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:36:08,570 INFO L93 Difference]: Finished difference Result 337 states and 425 transitions. [2022-11-18 19:36:08,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:36:08,571 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 182 [2022-11-18 19:36:08,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:36:08,573 INFO L225 Difference]: With dead ends: 337 [2022-11-18 19:36:08,573 INFO L226 Difference]: Without dead ends: 192 [2022-11-18 19:36:08,574 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:36:08,575 INFO L413 NwaCegarLoop]: 202 mSDtfsCounter, 7 mSDsluCounter, 384 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 586 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:36:08,575 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 586 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 19:36:08,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2022-11-18 19:36:08,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 192. [2022-11-18 19:36:08,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 134 states have (on average 1.1791044776119404) internal successors, (158), 137 states have internal predecessors, (158), 36 states have call successors, (36), 18 states have call predecessors, (36), 21 states have return successors, (44), 37 states have call predecessors, (44), 35 states have call successors, (44) [2022-11-18 19:36:08,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 238 transitions. [2022-11-18 19:36:08,590 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 238 transitions. Word has length 182 [2022-11-18 19:36:08,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:36:08,590 INFO L495 AbstractCegarLoop]: Abstraction has 192 states and 238 transitions. [2022-11-18 19:36:08,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-18 19:36:08,591 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 238 transitions. [2022-11-18 19:36:08,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2022-11-18 19:36:08,592 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:36:08,593 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 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, 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] [2022-11-18 19:36:08,609 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e40075-6577-41eb-aecd-10c7a982b5fe/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-18 19:36:08,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e40075-6577-41eb-aecd-10c7a982b5fe/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-18 19:36:08,804 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:36:08,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:36:08,804 INFO L85 PathProgramCache]: Analyzing trace with hash 1213890040, now seen corresponding path program 1 times [2022-11-18 19:36:08,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:36:08,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993529859] [2022-11-18 19:36:08,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:36:08,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:36:08,901 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:36:08,902 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1160335894] [2022-11-18 19:36:08,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:36:08,902 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:36:08,902 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e40075-6577-41eb-aecd-10c7a982b5fe/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:36:08,903 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e40075-6577-41eb-aecd-10c7a982b5fe/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:36:08,921 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e40075-6577-41eb-aecd-10c7a982b5fe/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-18 19:36:09,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:09,702 INFO L263 TraceCheckSpWp]: Trace formula consists of 2673 conjuncts, 139 conjunts are in the unsatisfiable core [2022-11-18 19:36:09,712 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:36:09,728 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-18 19:36:10,299 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 [2022-11-18 19:36:12,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:36:12,400 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 [2022-11-18 19:36:15,338 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_1532 (Array Int Int))) (= (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_1532) |c_#memory_int|)) is different from true [2022-11-18 19:36:16,436 INFO L321 Elim1Store]: treesize reduction 48, result has 2.0 percent of original size [2022-11-18 19:36:16,438 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 443 treesize of output 1 [2022-11-18 19:36:16,442 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 51 proven. 19 refuted. 3 times theorem prover too weak. 37 trivial. 3 not checked. [2022-11-18 19:36:16,444 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:36:17,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:36:17,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993529859] [2022-11-18 19:36:17,349 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:36:17,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1160335894] [2022-11-18 19:36:17,350 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1160335894] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:36:17,350 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-18 19:36:17,350 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2022-11-18 19:36:17,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923947671] [2022-11-18 19:36:17,350 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-18 19:36:17,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-18 19:36:17,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:36:17,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-18 19:36:17,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=839, Unknown=53, NotChecked=60, Total=1056 [2022-11-18 19:36:17,352 INFO L87 Difference]: Start difference. First operand 192 states and 238 transitions. Second operand has 32 states, 28 states have (on average 4.178571428571429) internal successors, (117), 28 states have internal predecessors, (117), 12 states have call successors, (26), 7 states have call predecessors, (26), 12 states have return successors, (25), 12 states have call predecessors, (25), 12 states have call successors, (25) [2022-11-18 19:36:18,106 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_1530 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_1530))) (exists ((v_ArrVal_1532 (Array Int Int))) (= (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_1532) |c_#memory_int|)) (exists ((v_ArrVal_1529 Int) (|v___CPROVER_overflow_mult_~#c~1.base_76| Int)) (and (= |c_#valid| (store |c_old(#valid)| |v___CPROVER_overflow_mult_~#c~1.base_76| v_ArrVal_1529)) (= (select |c_old(#valid)| |v___CPROVER_overflow_mult_~#c~1.base_76|) 0)))) is different from true [2022-11-18 19:36:21,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:36:21,125 INFO L93 Difference]: Finished difference Result 389 states and 493 transitions. [2022-11-18 19:36:21,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-18 19:36:21,126 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 28 states have (on average 4.178571428571429) internal successors, (117), 28 states have internal predecessors, (117), 12 states have call successors, (26), 7 states have call predecessors, (26), 12 states have return successors, (25), 12 states have call predecessors, (25), 12 states have call successors, (25) Word has length 184 [2022-11-18 19:36:21,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:36:21,128 INFO L225 Difference]: With dead ends: 389 [2022-11-18 19:36:21,128 INFO L226 Difference]: Without dead ends: 275 [2022-11-18 19:36:21,130 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 213 SyntacticMatches, 8 SemanticMatches, 39 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 433 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=147, Invalid=1279, Unknown=64, NotChecked=150, Total=1640 [2022-11-18 19:36:21,131 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 189 mSDsluCounter, 1737 mSDsCounter, 0 mSdLazyCounter, 1083 mSolverCounterSat, 152 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 1876 SdHoareTripleChecker+Invalid, 3373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 152 IncrementalHoareTripleChecker+Valid, 1083 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2138 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:36:21,131 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [195 Valid, 1876 Invalid, 3373 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [152 Valid, 1083 Invalid, 0 Unknown, 2138 Unchecked, 1.2s Time] [2022-11-18 19:36:21,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2022-11-18 19:36:21,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 243. [2022-11-18 19:36:21,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 174 states have (on average 1.1724137931034482) internal successors, (204), 180 states have internal predecessors, (204), 39 states have call successors, (39), 21 states have call predecessors, (39), 29 states have return successors, (61), 42 states have call predecessors, (61), 38 states have call successors, (61) [2022-11-18 19:36:21,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 304 transitions. [2022-11-18 19:36:21,162 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 304 transitions. Word has length 184 [2022-11-18 19:36:21,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:36:21,163 INFO L495 AbstractCegarLoop]: Abstraction has 243 states and 304 transitions. [2022-11-18 19:36:21,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 28 states have (on average 4.178571428571429) internal successors, (117), 28 states have internal predecessors, (117), 12 states have call successors, (26), 7 states have call predecessors, (26), 12 states have return successors, (25), 12 states have call predecessors, (25), 12 states have call successors, (25) [2022-11-18 19:36:21,163 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 304 transitions. [2022-11-18 19:36:21,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-11-18 19:36:21,166 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:36:21,166 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:36:21,178 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e40075-6577-41eb-aecd-10c7a982b5fe/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-18 19:36:21,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e40075-6577-41eb-aecd-10c7a982b5fe/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-18 19:36:21,378 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:36:21,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:36:21,378 INFO L85 PathProgramCache]: Analyzing trace with hash 964853663, now seen corresponding path program 1 times [2022-11-18 19:36:21,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:36:21,379 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240690282] [2022-11-18 19:36:21,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:36:21,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:36:21,459 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:36:21,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1483784182] [2022-11-18 19:36:21,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:36:21,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:36:21,460 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e40075-6577-41eb-aecd-10c7a982b5fe/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:36:21,461 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e40075-6577-41eb-aecd-10c7a982b5fe/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:36:21,486 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e40075-6577-41eb-aecd-10c7a982b5fe/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-18 19:36:22,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:22,134 INFO L263 TraceCheckSpWp]: Trace formula consists of 2712 conjuncts, 115 conjunts are in the unsatisfiable core [2022-11-18 19:36:22,147 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:36:22,153 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-18 19:36:22,701 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 [2022-11-18 19:36:22,723 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 [2022-11-18 19:36:22,815 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 [2022-11-18 19:36:22,906 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-18 19:36:22,907 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-18 19:36:24,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:36:24,970 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 [2022-11-18 19:36:28,004 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_1727 (Array Int Int))) (= (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_1727) |c_#memory_int|)) is different from true [2022-11-18 19:36:28,892 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 42 proven. 21 refuted. 3 times theorem prover too weak. 37 trivial. 3 not checked. [2022-11-18 19:36:28,893 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:36:29,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:36:29,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240690282] [2022-11-18 19:36:29,642 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:36:29,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1483784182] [2022-11-18 19:36:29,642 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1483784182] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:36:29,642 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-18 19:36:29,642 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2022-11-18 19:36:29,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189366132] [2022-11-18 19:36:29,642 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-18 19:36:29,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-11-18 19:36:29,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:36:29,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-11-18 19:36:29,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=949, Unknown=60, NotChecked=64, Total=1190 [2022-11-18 19:36:29,644 INFO L87 Difference]: Start difference. First operand 243 states and 304 transitions. Second operand has 34 states, 30 states have (on average 4.033333333333333) internal successors, (121), 30 states have internal predecessors, (121), 14 states have call successors, (27), 8 states have call predecessors, (27), 13 states have return successors, (26), 13 states have call predecessors, (26), 14 states have call successors, (26) [2022-11-18 19:36:30,285 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_1725 (Array Int Int))) (= (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_1725) |c_#memory_int|)) (exists ((v_ArrVal_1727 (Array Int Int))) (= (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_1727) |c_#memory_int|)) (exists ((|v___CPROVER_overflow_mult_~#c~1.base_99| Int) (v_ArrVal_1724 Int)) (and (= (select |c_old(#valid)| |v___CPROVER_overflow_mult_~#c~1.base_99|) 0) (= |c_#valid| (store |c_old(#valid)| |v___CPROVER_overflow_mult_~#c~1.base_99| v_ArrVal_1724))))) is different from true [2022-11-18 19:36:30,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:36:30,915 INFO L93 Difference]: Finished difference Result 457 states and 574 transitions. [2022-11-18 19:36:30,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-18 19:36:30,916 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 30 states have (on average 4.033333333333333) internal successors, (121), 30 states have internal predecessors, (121), 14 states have call successors, (27), 8 states have call predecessors, (27), 13 states have return successors, (26), 13 states have call predecessors, (26), 14 states have call successors, (26) Word has length 190 [2022-11-18 19:36:30,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:36:30,918 INFO L225 Difference]: With dead ends: 457 [2022-11-18 19:36:30,918 INFO L226 Difference]: Without dead ends: 324 [2022-11-18 19:36:30,919 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 220 SyntacticMatches, 6 SemanticMatches, 39 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 480 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=153, Invalid=1272, Unknown=65, NotChecked=150, Total=1640 [2022-11-18 19:36:30,920 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 146 mSDsluCounter, 1324 mSDsCounter, 0 mSdLazyCounter, 902 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 1478 SdHoareTripleChecker+Invalid, 2573 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 902 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1573 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-18 19:36:30,920 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 1478 Invalid, 2573 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 902 Invalid, 0 Unknown, 1573 Unchecked, 0.9s Time] [2022-11-18 19:36:30,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2022-11-18 19:36:30,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 291. [2022-11-18 19:36:30,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 209 states have (on average 1.1770334928229664) internal successors, (246), 218 states have internal predecessors, (246), 44 states have call successors, (44), 26 states have call predecessors, (44), 37 states have return successors, (73), 47 states have call predecessors, (73), 43 states have call successors, (73) [2022-11-18 19:36:30,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 363 transitions. [2022-11-18 19:36:30,948 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 363 transitions. Word has length 190 [2022-11-18 19:36:30,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:36:30,949 INFO L495 AbstractCegarLoop]: Abstraction has 291 states and 363 transitions. [2022-11-18 19:36:30,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 30 states have (on average 4.033333333333333) internal successors, (121), 30 states have internal predecessors, (121), 14 states have call successors, (27), 8 states have call predecessors, (27), 13 states have return successors, (26), 13 states have call predecessors, (26), 14 states have call successors, (26) [2022-11-18 19:36:30,949 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 363 transitions. [2022-11-18 19:36:30,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2022-11-18 19:36:30,951 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:36:30,952 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:36:30,972 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e40075-6577-41eb-aecd-10c7a982b5fe/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-18 19:36:31,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e40075-6577-41eb-aecd-10c7a982b5fe/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-18 19:36:31,162 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:36:31,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:36:31,162 INFO L85 PathProgramCache]: Analyzing trace with hash -1399537276, now seen corresponding path program 1 times [2022-11-18 19:36:31,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:36:31,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216980944] [2022-11-18 19:36:31,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:36:31,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:36:31,233 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:36:31,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1655556934] [2022-11-18 19:36:31,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:36:31,233 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:36:31,234 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e40075-6577-41eb-aecd-10c7a982b5fe/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:36:31,235 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e40075-6577-41eb-aecd-10c7a982b5fe/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:36:31,249 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e40075-6577-41eb-aecd-10c7a982b5fe/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-18 19:36:31,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:31,991 INFO L263 TraceCheckSpWp]: Trace formula consists of 2713 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 19:36:31,996 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:36:32,021 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2022-11-18 19:36:32,021 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:36:32,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:36:32,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216980944] [2022-11-18 19:36:32,022 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:36:32,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1655556934] [2022-11-18 19:36:32,022 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1655556934] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:36:32,023 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:36:32,023 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:36:32,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498093097] [2022-11-18 19:36:32,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:36:32,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 19:36:32,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:36:32,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 19:36:32,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:36:32,026 INFO L87 Difference]: Start difference. First operand 291 states and 363 transitions. Second operand has 5 states, 5 states have (on average 21.8) internal successors, (109), 4 states have internal predecessors, (109), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 3 states have call predecessors, (25), 2 states have call successors, (25) [2022-11-18 19:36:32,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:36:32,076 INFO L93 Difference]: Finished difference Result 320 states and 397 transitions. [2022-11-18 19:36:32,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:36:32,077 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 4 states have internal predecessors, (109), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 3 states have call predecessors, (25), 2 states have call successors, (25) Word has length 196 [2022-11-18 19:36:32,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:36:32,082 INFO L225 Difference]: With dead ends: 320 [2022-11-18 19:36:32,082 INFO L226 Difference]: Without dead ends: 293 [2022-11-18 19:36:32,083 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:36:32,084 INFO L413 NwaCegarLoop]: 197 mSDtfsCounter, 0 mSDsluCounter, 577 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 774 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:36:32,084 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 774 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 19:36:32,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2022-11-18 19:36:32,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 292. [2022-11-18 19:36:32,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 210 states have (on average 1.1761904761904762) internal successors, (247), 218 states have internal predecessors, (247), 44 states have call successors, (44), 26 states have call predecessors, (44), 37 states have return successors, (73), 48 states have call predecessors, (73), 43 states have call successors, (73) [2022-11-18 19:36:32,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 364 transitions. [2022-11-18 19:36:32,110 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 364 transitions. Word has length 196 [2022-11-18 19:36:32,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:36:32,111 INFO L495 AbstractCegarLoop]: Abstraction has 292 states and 364 transitions. [2022-11-18 19:36:32,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 4 states have internal predecessors, (109), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 3 states have call predecessors, (25), 2 states have call successors, (25) [2022-11-18 19:36:32,112 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 364 transitions. [2022-11-18 19:36:32,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2022-11-18 19:36:32,114 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:36:32,114 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:36:32,131 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e40075-6577-41eb-aecd-10c7a982b5fe/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-18 19:36:32,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e40075-6577-41eb-aecd-10c7a982b5fe/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-18 19:36:32,327 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:36:32,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:36:32,327 INFO L85 PathProgramCache]: Analyzing trace with hash 1645951884, now seen corresponding path program 2 times [2022-11-18 19:36:32,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:36:32,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098853196] [2022-11-18 19:36:32,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:36:32,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:36:32,405 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:36:32,406 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1614884346] [2022-11-18 19:36:32,406 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 19:36:32,406 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:36:32,407 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e40075-6577-41eb-aecd-10c7a982b5fe/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:36:32,408 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e40075-6577-41eb-aecd-10c7a982b5fe/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:36:32,429 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e40075-6577-41eb-aecd-10c7a982b5fe/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-18 19:36:33,524 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 19:36:33,524 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:36:33,535 INFO L263 TraceCheckSpWp]: Trace formula consists of 2717 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-18 19:36:33,540 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:36:33,672 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-11-18 19:36:33,672 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:36:33,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:36:33,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098853196] [2022-11-18 19:36:33,673 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:36:33,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1614884346] [2022-11-18 19:36:33,673 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1614884346] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:36:33,673 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:36:33,673 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-18 19:36:33,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992818488] [2022-11-18 19:36:33,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:36:33,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 19:36:33,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:36:33,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 19:36:33,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-11-18 19:36:33,675 INFO L87 Difference]: Start difference. First operand 292 states and 364 transitions. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 8 states have internal predecessors, (113), 2 states have call successors, (26), 2 states have call predecessors, (26), 5 states have return successors, (26), 5 states have call predecessors, (26), 2 states have call successors, (26) [2022-11-18 19:36:33,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:36:33,829 INFO L93 Difference]: Finished difference Result 468 states and 579 transitions. [2022-11-18 19:36:33,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-18 19:36:33,830 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 8 states have internal predecessors, (113), 2 states have call successors, (26), 2 states have call predecessors, (26), 5 states have return successors, (26), 5 states have call predecessors, (26), 2 states have call successors, (26) Word has length 199 [2022-11-18 19:36:33,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:36:33,832 INFO L225 Difference]: With dead ends: 468 [2022-11-18 19:36:33,832 INFO L226 Difference]: Without dead ends: 307 [2022-11-18 19:36:33,833 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2022-11-18 19:36:33,834 INFO L413 NwaCegarLoop]: 215 mSDtfsCounter, 13 mSDsluCounter, 1886 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2101 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:36:33,834 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 2101 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 19:36:33,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2022-11-18 19:36:33,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 291. [2022-11-18 19:36:33,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 210 states have (on average 1.1761904761904762) internal successors, (247), 216 states have internal predecessors, (247), 44 states have call successors, (44), 26 states have call predecessors, (44), 36 states have return successors, (69), 49 states have call predecessors, (69), 43 states have call successors, (69) [2022-11-18 19:36:33,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 360 transitions. [2022-11-18 19:36:33,860 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 360 transitions. Word has length 199 [2022-11-18 19:36:33,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:36:33,861 INFO L495 AbstractCegarLoop]: Abstraction has 291 states and 360 transitions. [2022-11-18 19:36:33,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 8 states have internal predecessors, (113), 2 states have call successors, (26), 2 states have call predecessors, (26), 5 states have return successors, (26), 5 states have call predecessors, (26), 2 states have call successors, (26) [2022-11-18 19:36:33,861 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 360 transitions. [2022-11-18 19:36:33,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2022-11-18 19:36:33,863 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:36:33,864 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:36:33,882 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e40075-6577-41eb-aecd-10c7a982b5fe/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-11-18 19:36:34,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e40075-6577-41eb-aecd-10c7a982b5fe/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:36:34,082 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:36:34,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:36:34,082 INFO L85 PathProgramCache]: Analyzing trace with hash -16710381, now seen corresponding path program 1 times [2022-11-18 19:36:34,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:36:34,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733806268] [2022-11-18 19:36:34,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:36:34,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:36:34,157 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:36:34,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1476599871] [2022-11-18 19:36:34,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:36:34,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:36:34,158 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e40075-6577-41eb-aecd-10c7a982b5fe/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:36:34,159 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e40075-6577-41eb-aecd-10c7a982b5fe/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:36:34,163 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e40075-6577-41eb-aecd-10c7a982b5fe/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-18 19:36:35,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:35,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 2713 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-18 19:36:35,367 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:36:35,428 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 48 proven. 1 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2022-11-18 19:36:35,429 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:36:35,813 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2022-11-18 19:36:35,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:36:35,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733806268] [2022-11-18 19:36:35,814 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:36:35,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1476599871] [2022-11-18 19:36:35,814 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1476599871] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:36:35,814 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:36:35,815 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-11-18 19:36:35,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109408217] [2022-11-18 19:36:35,815 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:36:35,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 19:36:35,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:36:35,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 19:36:35,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:36:35,817 INFO L87 Difference]: Start difference. First operand 291 states and 360 transitions. Second operand has 8 states, 8 states have (on average 16.75) internal successors, (134), 8 states have internal predecessors, (134), 2 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2022-11-18 19:36:36,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:36:36,036 INFO L93 Difference]: Finished difference Result 449 states and 575 transitions. [2022-11-18 19:36:36,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 19:36:36,037 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.75) internal successors, (134), 8 states have internal predecessors, (134), 2 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 193 [2022-11-18 19:36:36,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:36:36,040 INFO L225 Difference]: With dead ends: 449 [2022-11-18 19:36:36,040 INFO L226 Difference]: Without dead ends: 306 [2022-11-18 19:36:36,041 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 386 GetRequests, 378 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2022-11-18 19:36:36,042 INFO L413 NwaCegarLoop]: 193 mSDtfsCounter, 28 mSDsluCounter, 749 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 942 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:36:36,042 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 942 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 19:36:36,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2022-11-18 19:36:36,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 300. [2022-11-18 19:36:36,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 300 states, 219 states have (on average 1.182648401826484) internal successors, (259), 225 states have internal predecessors, (259), 44 states have call successors, (44), 26 states have call predecessors, (44), 36 states have return successors, (69), 49 states have call predecessors, (69), 43 states have call successors, (69) [2022-11-18 19:36:36,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 372 transitions. [2022-11-18 19:36:36,071 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 372 transitions. Word has length 193 [2022-11-18 19:36:36,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:36:36,072 INFO L495 AbstractCegarLoop]: Abstraction has 300 states and 372 transitions. [2022-11-18 19:36:36,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.75) internal successors, (134), 8 states have internal predecessors, (134), 2 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2022-11-18 19:36:36,073 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 372 transitions. [2022-11-18 19:36:36,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2022-11-18 19:36:36,075 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:36:36,075 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 4, 4, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:36:36,097 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e40075-6577-41eb-aecd-10c7a982b5fe/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2022-11-18 19:36:36,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e40075-6577-41eb-aecd-10c7a982b5fe/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:36:36,290 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:36:36,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:36:36,290 INFO L85 PathProgramCache]: Analyzing trace with hash 1529453249, now seen corresponding path program 1 times [2022-11-18 19:36:36,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:36:36,290 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769867125] [2022-11-18 19:36:36,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:36:36,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:36:36,394 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:36:36,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2087887124] [2022-11-18 19:36:36,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:36:36,395 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:36:36,397 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e40075-6577-41eb-aecd-10c7a982b5fe/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:36:36,398 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e40075-6577-41eb-aecd-10c7a982b5fe/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:36:36,409 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e40075-6577-41eb-aecd-10c7a982b5fe/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-11-18 19:36:37,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:37,226 INFO L263 TraceCheckSpWp]: Trace formula consists of 2764 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-18 19:36:37,231 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:36:37,394 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2022-11-18 19:36:37,394 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:36:37,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:36:37,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769867125] [2022-11-18 19:36:37,394 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:36:37,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2087887124] [2022-11-18 19:36:37,395 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2087887124] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:36:37,395 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:36:37,395 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-18 19:36:37,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402280401] [2022-11-18 19:36:37,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:36:37,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 19:36:37,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:36:37,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 19:36:37,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-18 19:36:37,397 INFO L87 Difference]: Start difference. First operand 300 states and 372 transitions. Second operand has 9 states, 8 states have (on average 13.375) internal successors, (107), 9 states have internal predecessors, (107), 6 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (25), 5 states have call predecessors, (25), 6 states have call successors, (25) [2022-11-18 19:36:37,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:36:37,809 INFO L93 Difference]: Finished difference Result 450 states and 557 transitions. [2022-11-18 19:36:37,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 19:36:37,809 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 13.375) internal successors, (107), 9 states have internal predecessors, (107), 6 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (25), 5 states have call predecessors, (25), 6 states have call successors, (25) Word has length 205 [2022-11-18 19:36:37,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:36:37,815 INFO L225 Difference]: With dead ends: 450 [2022-11-18 19:36:37,815 INFO L226 Difference]: Without dead ends: 298 [2022-11-18 19:36:37,816 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2022-11-18 19:36:37,818 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 233 mSDsluCounter, 881 mSDsCounter, 0 mSdLazyCounter, 287 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 1043 SdHoareTripleChecker+Invalid, 337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 19:36:37,819 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [235 Valid, 1043 Invalid, 337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 287 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 19:36:37,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2022-11-18 19:36:37,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2022-11-18 19:36:37,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 218 states have (on average 1.1788990825688073) internal successors, (257), 223 states have internal predecessors, (257), 44 states have call successors, (44), 26 states have call predecessors, (44), 35 states have return successors, (68), 49 states have call predecessors, (68), 43 states have call successors, (68) [2022-11-18 19:36:37,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 369 transitions. [2022-11-18 19:36:37,861 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 369 transitions. Word has length 205 [2022-11-18 19:36:37,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:36:37,862 INFO L495 AbstractCegarLoop]: Abstraction has 298 states and 369 transitions. [2022-11-18 19:36:37,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 13.375) internal successors, (107), 9 states have internal predecessors, (107), 6 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (25), 5 states have call predecessors, (25), 6 states have call successors, (25) [2022-11-18 19:36:37,862 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 369 transitions. [2022-11-18 19:36:37,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2022-11-18 19:36:37,867 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:36:37,867 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1] [2022-11-18 19:36:37,885 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e40075-6577-41eb-aecd-10c7a982b5fe/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-11-18 19:36:38,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e40075-6577-41eb-aecd-10c7a982b5fe/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:36:38,082 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:36:38,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:36:38,082 INFO L85 PathProgramCache]: Analyzing trace with hash -767778095, now seen corresponding path program 1 times [2022-11-18 19:36:38,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:36:38,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426619433] [2022-11-18 19:36:38,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:36:38,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:36:38,168 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:36:38,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1324910402] [2022-11-18 19:36:38,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:36:38,169 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:36:38,169 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e40075-6577-41eb-aecd-10c7a982b5fe/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:36:38,170 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e40075-6577-41eb-aecd-10c7a982b5fe/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:36:38,204 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e40075-6577-41eb-aecd-10c7a982b5fe/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-11-18 19:36:38,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:38,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 2905 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-18 19:36:38,971 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:36:39,097 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2022-11-18 19:36:39,098 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:36:39,634 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2022-11-18 19:36:39,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:36:39,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426619433] [2022-11-18 19:36:39,635 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:36:39,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1324910402] [2022-11-18 19:36:39,635 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1324910402] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:36:39,635 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:36:39,635 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2022-11-18 19:36:39,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173872305] [2022-11-18 19:36:39,636 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:36:39,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-18 19:36:39,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:36:39,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-18 19:36:39,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2022-11-18 19:36:39,638 INFO L87 Difference]: Start difference. First operand 298 states and 369 transitions. Second operand has 13 states, 11 states have (on average 10.545454545454545) internal successors, (116), 13 states have internal predecessors, (116), 6 states have call successors, (30), 2 states have call predecessors, (30), 5 states have return successors, (30), 6 states have call predecessors, (30), 6 states have call successors, (30) [2022-11-18 19:36:39,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:36:39,780 INFO L93 Difference]: Finished difference Result 443 states and 545 transitions. [2022-11-18 19:36:39,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 19:36:39,782 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 10.545454545454545) internal successors, (116), 13 states have internal predecessors, (116), 6 states have call successors, (30), 2 states have call predecessors, (30), 5 states have return successors, (30), 6 states have call predecessors, (30), 6 states have call successors, (30) Word has length 220 [2022-11-18 19:36:39,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:36:39,784 INFO L225 Difference]: With dead ends: 443 [2022-11-18 19:36:39,785 INFO L226 Difference]: Without dead ends: 301 [2022-11-18 19:36:39,785 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 441 GetRequests, 426 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2022-11-18 19:36:39,786 INFO L413 NwaCegarLoop]: 191 mSDtfsCounter, 33 mSDsluCounter, 1120 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 1311 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:36:39,787 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 1311 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 19:36:39,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2022-11-18 19:36:39,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 300. [2022-11-18 19:36:39,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 300 states, 220 states have (on average 1.1772727272727272) internal successors, (259), 225 states have internal predecessors, (259), 44 states have call successors, (44), 26 states have call predecessors, (44), 35 states have return successors, (68), 49 states have call predecessors, (68), 43 states have call successors, (68) [2022-11-18 19:36:39,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 371 transitions. [2022-11-18 19:36:39,811 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 371 transitions. Word has length 220 [2022-11-18 19:36:39,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:36:39,812 INFO L495 AbstractCegarLoop]: Abstraction has 300 states and 371 transitions. [2022-11-18 19:36:39,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 10.545454545454545) internal successors, (116), 13 states have internal predecessors, (116), 6 states have call successors, (30), 2 states have call predecessors, (30), 5 states have return successors, (30), 6 states have call predecessors, (30), 6 states have call successors, (30) [2022-11-18 19:36:39,812 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 371 transitions. [2022-11-18 19:36:39,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2022-11-18 19:36:39,814 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:36:39,815 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1] [2022-11-18 19:36:39,832 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e40075-6577-41eb-aecd-10c7a982b5fe/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2022-11-18 19:36:40,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e40075-6577-41eb-aecd-10c7a982b5fe/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:36:40,028 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:36:40,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:36:40,028 INFO L85 PathProgramCache]: Analyzing trace with hash -1940716689, now seen corresponding path program 2 times [2022-11-18 19:36:40,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:36:40,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500561541] [2022-11-18 19:36:40,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:36:40,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:36:40,110 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:36:40,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [700921852] [2022-11-18 19:36:40,111 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 19:36:40,111 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:36:40,111 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e40075-6577-41eb-aecd-10c7a982b5fe/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:36:40,113 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e40075-6577-41eb-aecd-10c7a982b5fe/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:36:40,129 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e40075-6577-41eb-aecd-10c7a982b5fe/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-11-18 19:36:41,105 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 19:36:41,105 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:36:41,116 INFO L263 TraceCheckSpWp]: Trace formula consists of 2924 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-18 19:36:41,120 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:36:41,213 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 17 proven. 4 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2022-11-18 19:36:41,214 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:36:41,778 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2022-11-18 19:36:41,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:36:41,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500561541] [2022-11-18 19:36:41,779 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:36:41,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [700921852] [2022-11-18 19:36:41,779 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [700921852] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:36:41,779 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:36:41,780 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2022-11-18 19:36:41,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158852092] [2022-11-18 19:36:41,780 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:36:41,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-18 19:36:41,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:36:41,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-18 19:36:41,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2022-11-18 19:36:41,782 INFO L87 Difference]: Start difference. First operand 300 states and 371 transitions. Second operand has 15 states, 13 states have (on average 9.23076923076923) internal successors, (120), 15 states have internal predecessors, (120), 6 states have call successors, (30), 2 states have call predecessors, (30), 5 states have return successors, (30), 6 states have call predecessors, (30), 6 states have call successors, (30) [2022-11-18 19:36:41,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:36:41,969 INFO L93 Difference]: Finished difference Result 447 states and 549 transitions. [2022-11-18 19:36:41,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 19:36:41,974 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 9.23076923076923) internal successors, (120), 15 states have internal predecessors, (120), 6 states have call successors, (30), 2 states have call predecessors, (30), 5 states have return successors, (30), 6 states have call predecessors, (30), 6 states have call successors, (30) Word has length 222 [2022-11-18 19:36:41,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:36:41,976 INFO L225 Difference]: With dead ends: 447 [2022-11-18 19:36:41,976 INFO L226 Difference]: Without dead ends: 303 [2022-11-18 19:36:41,977 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 445 GetRequests, 428 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2022-11-18 19:36:41,978 INFO L413 NwaCegarLoop]: 191 mSDtfsCounter, 29 mSDsluCounter, 1681 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 1872 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:36:41,978 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 1872 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 19:36:41,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2022-11-18 19:36:42,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 302. [2022-11-18 19:36:42,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 302 states, 222 states have (on average 1.1756756756756757) internal successors, (261), 227 states have internal predecessors, (261), 44 states have call successors, (44), 26 states have call predecessors, (44), 35 states have return successors, (68), 49 states have call predecessors, (68), 43 states have call successors, (68) [2022-11-18 19:36:42,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 373 transitions. [2022-11-18 19:36:42,034 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 373 transitions. Word has length 222 [2022-11-18 19:36:42,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:36:42,035 INFO L495 AbstractCegarLoop]: Abstraction has 302 states and 373 transitions. [2022-11-18 19:36:42,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 9.23076923076923) internal successors, (120), 15 states have internal predecessors, (120), 6 states have call successors, (30), 2 states have call predecessors, (30), 5 states have return successors, (30), 6 states have call predecessors, (30), 6 states have call successors, (30) [2022-11-18 19:36:42,035 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 373 transitions. [2022-11-18 19:36:42,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2022-11-18 19:36:42,037 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:36:42,038 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:36:42,049 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e40075-6577-41eb-aecd-10c7a982b5fe/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-11-18 19:36:42,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e40075-6577-41eb-aecd-10c7a982b5fe/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-11-18 19:36:42,249 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:36:42,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:36:42,250 INFO L85 PathProgramCache]: Analyzing trace with hash 783622132, now seen corresponding path program 1 times [2022-11-18 19:36:42,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:36:42,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958081769] [2022-11-18 19:36:42,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:36:42,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:36:42,326 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:36:42,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1087530169] [2022-11-18 19:36:42,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:36:42,327 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:36:42,327 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e40075-6577-41eb-aecd-10c7a982b5fe/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:36:42,329 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e40075-6577-41eb-aecd-10c7a982b5fe/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:36:42,358 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e40075-6577-41eb-aecd-10c7a982b5fe/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-11-18 19:36:43,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:43,160 INFO L263 TraceCheckSpWp]: Trace formula consists of 2947 conjuncts, 30 conjunts are in the unsatisfiable core [2022-11-18 19:36:43,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:36:43,307 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 17 proven. 9 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2022-11-18 19:36:43,307 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:36:43,988 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2022-11-18 19:36:43,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:36:43,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958081769] [2022-11-18 19:36:43,988 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:36:43,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1087530169] [2022-11-18 19:36:43,989 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1087530169] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:36:43,989 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:36:43,989 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2022-11-18 19:36:43,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857035701] [2022-11-18 19:36:43,989 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:36:43,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-18 19:36:43,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:36:43,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-18 19:36:43,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2022-11-18 19:36:43,991 INFO L87 Difference]: Start difference. First operand 302 states and 373 transitions. Second operand has 17 states, 15 states have (on average 8.6) internal successors, (129), 17 states have internal predecessors, (129), 6 states have call successors, (31), 2 states have call predecessors, (31), 5 states have return successors, (31), 6 states have call predecessors, (31), 6 states have call successors, (31) [2022-11-18 19:36:44,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:36:44,237 INFO L93 Difference]: Finished difference Result 451 states and 553 transitions. [2022-11-18 19:36:44,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 19:36:44,238 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 8.6) internal successors, (129), 17 states have internal predecessors, (129), 6 states have call successors, (31), 2 states have call predecessors, (31), 5 states have return successors, (31), 6 states have call predecessors, (31), 6 states have call successors, (31) Word has length 230 [2022-11-18 19:36:44,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:36:44,240 INFO L225 Difference]: With dead ends: 451 [2022-11-18 19:36:44,240 INFO L226 Difference]: Without dead ends: 305 [2022-11-18 19:36:44,241 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 461 GetRequests, 442 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=85, Invalid=295, Unknown=0, NotChecked=0, Total=380 [2022-11-18 19:36:44,242 INFO L413 NwaCegarLoop]: 191 mSDtfsCounter, 51 mSDsluCounter, 1315 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 1506 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:36:44,242 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 1506 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 19:36:44,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2022-11-18 19:36:44,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 304. [2022-11-18 19:36:44,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 224 states have (on average 1.1741071428571428) internal successors, (263), 229 states have internal predecessors, (263), 44 states have call successors, (44), 26 states have call predecessors, (44), 35 states have return successors, (68), 49 states have call predecessors, (68), 43 states have call successors, (68) [2022-11-18 19:36:44,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 375 transitions. [2022-11-18 19:36:44,268 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 375 transitions. Word has length 230 [2022-11-18 19:36:44,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:36:44,268 INFO L495 AbstractCegarLoop]: Abstraction has 304 states and 375 transitions. [2022-11-18 19:36:44,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 8.6) internal successors, (129), 17 states have internal predecessors, (129), 6 states have call successors, (31), 2 states have call predecessors, (31), 5 states have return successors, (31), 6 states have call predecessors, (31), 6 states have call successors, (31) [2022-11-18 19:36:44,269 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 375 transitions. [2022-11-18 19:36:44,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2022-11-18 19:36:44,271 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:36:44,271 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:36:44,289 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e40075-6577-41eb-aecd-10c7a982b5fe/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-11-18 19:36:44,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e40075-6577-41eb-aecd-10c7a982b5fe/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-11-18 19:36:44,485 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:36:44,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:36:44,485 INFO L85 PathProgramCache]: Analyzing trace with hash -1398750254, now seen corresponding path program 2 times [2022-11-18 19:36:44,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:36:44,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925860533] [2022-11-18 19:36:44,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:36:44,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:36:44,569 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:36:44,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [879794875] [2022-11-18 19:36:44,569 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 19:36:44,569 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:36:44,570 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e40075-6577-41eb-aecd-10c7a982b5fe/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:36:44,571 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e40075-6577-41eb-aecd-10c7a982b5fe/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:36:44,589 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e40075-6577-41eb-aecd-10c7a982b5fe/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-11-18 19:36:45,877 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 19:36:45,877 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:36:45,890 INFO L263 TraceCheckSpWp]: Trace formula consists of 2966 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-18 19:36:45,894 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:36:46,077 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2022-11-18 19:36:46,078 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:36:46,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:36:46,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925860533] [2022-11-18 19:36:46,078 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:36:46,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [879794875] [2022-11-18 19:36:46,079 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [879794875] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:36:46,079 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:36:46,079 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-18 19:36:46,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364403332] [2022-11-18 19:36:46,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:36:46,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-18 19:36:46,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:36:46,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-18 19:36:46,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2022-11-18 19:36:46,081 INFO L87 Difference]: Start difference. First operand 304 states and 375 transitions. Second operand has 15 states, 15 states have (on average 8.2) internal successors, (123), 11 states have internal predecessors, (123), 3 states have call successors, (27), 2 states have call predecessors, (27), 7 states have return successors, (27), 6 states have call predecessors, (27), 3 states have call successors, (27) [2022-11-18 19:36:46,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:36:46,457 INFO L93 Difference]: Finished difference Result 454 states and 562 transitions. [2022-11-18 19:36:46,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-18 19:36:46,458 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 8.2) internal successors, (123), 11 states have internal predecessors, (123), 3 states have call successors, (27), 2 states have call predecessors, (27), 7 states have return successors, (27), 6 states have call predecessors, (27), 3 states have call successors, (27) Word has length 232 [2022-11-18 19:36:46,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:36:46,463 INFO L225 Difference]: With dead ends: 454 [2022-11-18 19:36:46,464 INFO L226 Difference]: Without dead ends: 308 [2022-11-18 19:36:46,465 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 219 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=366, Unknown=0, NotChecked=0, Total=420 [2022-11-18 19:36:46,466 INFO L413 NwaCegarLoop]: 201 mSDtfsCounter, 17 mSDsluCounter, 2529 mSDsCounter, 0 mSdLazyCounter, 283 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 2730 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 19:36:46,467 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 2730 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 283 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 19:36:46,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2022-11-18 19:36:46,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 304. [2022-11-18 19:36:46,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 224 states have (on average 1.1741071428571428) internal successors, (263), 229 states have internal predecessors, (263), 44 states have call successors, (44), 26 states have call predecessors, (44), 35 states have return successors, (67), 49 states have call predecessors, (67), 43 states have call successors, (67) [2022-11-18 19:36:46,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 374 transitions. [2022-11-18 19:36:46,507 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 374 transitions. Word has length 232 [2022-11-18 19:36:46,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:36:46,508 INFO L495 AbstractCegarLoop]: Abstraction has 304 states and 374 transitions. [2022-11-18 19:36:46,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 8.2) internal successors, (123), 11 states have internal predecessors, (123), 3 states have call successors, (27), 2 states have call predecessors, (27), 7 states have return successors, (27), 6 states have call predecessors, (27), 3 states have call successors, (27) [2022-11-18 19:36:46,510 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 374 transitions. [2022-11-18 19:36:46,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2022-11-18 19:36:46,512 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:36:46,512 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1] [2022-11-18 19:36:46,532 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e40075-6577-41eb-aecd-10c7a982b5fe/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-11-18 19:36:46,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e40075-6577-41eb-aecd-10c7a982b5fe/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-11-18 19:36:46,725 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:36:46,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:36:46,725 INFO L85 PathProgramCache]: Analyzing trace with hash 720148011, now seen corresponding path program 3 times [2022-11-18 19:36:46,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:36:46,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001800791] [2022-11-18 19:36:46,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:36:46,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:36:46,808 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:36:46,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1589141108] [2022-11-18 19:36:46,809 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 19:36:46,809 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:36:46,809 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e40075-6577-41eb-aecd-10c7a982b5fe/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:36:46,810 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e40075-6577-41eb-aecd-10c7a982b5fe/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:36:46,837 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e40075-6577-41eb-aecd-10c7a982b5fe/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process