./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_init_copy_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2e4569-a56e-416a-a5f9-0e148068e73f/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2e4569-a56e-416a-a5f9-0e148068e73f/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2e4569-a56e-416a-a5f9-0e148068e73f/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2e4569-a56e-416a-a5f9-0e148068e73f/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_init_copy_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2e4569-a56e-416a-a5f9-0e148068e73f/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2e4569-a56e-416a-a5f9-0e148068e73f/bin/uautomizer-ug76WZFUDN --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 9248d62da968900adf628e209d21739bec2ffe4f64c1d45016706037787190a6 --- 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-6b4ec56 [2022-11-20 11:00:31,330 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 11:00:31,333 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 11:00:31,357 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 11:00:31,358 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 11:00:31,359 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 11:00:31,361 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 11:00:31,363 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 11:00:31,366 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 11:00:31,367 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 11:00:31,368 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 11:00:31,370 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 11:00:31,371 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 11:00:31,372 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 11:00:31,374 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 11:00:31,376 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 11:00:31,377 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 11:00:31,379 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 11:00:31,381 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 11:00:31,384 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 11:00:31,387 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 11:00:31,388 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 11:00:31,390 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 11:00:31,391 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 11:00:31,396 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 11:00:31,397 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 11:00:31,398 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 11:00:31,399 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 11:00:31,400 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 11:00:31,401 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 11:00:31,402 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 11:00:31,403 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 11:00:31,404 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 11:00:31,406 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 11:00:31,407 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 11:00:31,408 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 11:00:31,409 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 11:00:31,409 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 11:00:31,410 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 11:00:31,411 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 11:00:31,412 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 11:00:31,413 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2e4569-a56e-416a-a5f9-0e148068e73f/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-20 11:00:31,458 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 11:00:31,462 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 11:00:31,462 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 11:00:31,463 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 11:00:31,464 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 11:00:31,464 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 11:00:31,465 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 11:00:31,465 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 11:00:31,466 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 11:00:31,467 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 11:00:31,468 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 11:00:31,469 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 11:00:31,469 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 11:00:31,469 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 11:00:31,469 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 11:00:31,470 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 11:00:31,470 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 11:00:31,470 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 11:00:31,471 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 11:00:31,471 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 11:00:31,471 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 11:00:31,471 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:00:31,472 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 11:00:31,472 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 11:00:31,472 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 11:00:31,472 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 11:00:31,473 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 11:00:31,473 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 11:00:31,473 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 11:00:31,473 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 11:00:31,474 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_1c2e4569-a56e-416a-a5f9-0e148068e73f/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2e4569-a56e-416a-a5f9-0e148068e73f/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9248d62da968900adf628e209d21739bec2ffe4f64c1d45016706037787190a6 [2022-11-20 11:00:31,830 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 11:00:31,868 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 11:00:31,871 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 11:00:31,874 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 11:00:31,874 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 11:00:31,876 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2e4569-a56e-416a-a5f9-0e148068e73f/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/aws-c-common/aws_byte_buf_init_copy_harness.i [2022-11-20 11:00:35,393 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 11:00:36,070 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 11:00:36,071 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2e4569-a56e-416a-a5f9-0e148068e73f/sv-benchmarks/c/aws-c-common/aws_byte_buf_init_copy_harness.i [2022-11-20 11:00:36,111 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2e4569-a56e-416a-a5f9-0e148068e73f/bin/uautomizer-ug76WZFUDN/data/1912a7331/1ecd0757cb5240888a45b97b53a43699/FLAG3daf4a965 [2022-11-20 11:00:36,139 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2e4569-a56e-416a-a5f9-0e148068e73f/bin/uautomizer-ug76WZFUDN/data/1912a7331/1ecd0757cb5240888a45b97b53a43699 [2022-11-20 11:00:36,147 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 11:00:36,149 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 11:00:36,152 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 11:00:36,152 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 11:00:36,156 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 11:00:36,157 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:00:36" (1/1) ... [2022-11-20 11:00:36,158 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d00dfc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:00:36, skipping insertion in model container [2022-11-20 11:00:36,159 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:00:36" (1/1) ... [2022-11-20 11:00:36,168 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 11:00:36,275 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 11:00:36,567 WARN L237 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_1c2e4569-a56e-416a-a5f9-0e148068e73f/sv-benchmarks/c/aws-c-common/aws_byte_buf_init_copy_harness.i[4496,4509] [2022-11-20 11:00:36,578 WARN L237 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_1c2e4569-a56e-416a-a5f9-0e148068e73f/sv-benchmarks/c/aws-c-common/aws_byte_buf_init_copy_harness.i[4556,4569] [2022-11-20 11:00:37,964 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 11:00:37,965 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 11:00:37,965 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 11:00:37,967 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 11:00:37,968 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 11:00:38,011 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 11:00:38,019 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 11:00:38,021 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 11:00:38,022 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 11:00:38,642 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-20 11:00:38,644 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-20 11:00:38,645 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-20 11:00:38,647 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-20 11:00:38,648 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-20 11:00:38,649 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-20 11:00:38,650 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-20 11:00:38,651 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-20 11:00:38,652 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-20 11:00:38,653 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-20 11:00:38,871 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-20 11:00:38,959 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 11:00:38,959 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 11:00:39,023 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:00:39,092 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 11:00:39,123 WARN L237 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_1c2e4569-a56e-416a-a5f9-0e148068e73f/sv-benchmarks/c/aws-c-common/aws_byte_buf_init_copy_harness.i[4496,4509] [2022-11-20 11:00:39,124 WARN L237 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_1c2e4569-a56e-416a-a5f9-0e148068e73f/sv-benchmarks/c/aws-c-common/aws_byte_buf_init_copy_harness.i[4556,4569] [2022-11-20 11:00:39,184 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 11:00:39,186 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 11:00:39,187 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 11:00:39,189 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 11:00:39,190 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 11:00:39,203 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 11:00:39,208 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 11:00:39,209 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 11:00:39,210 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 11:00:39,270 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-20 11:00:39,271 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-20 11:00:39,272 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-20 11:00:39,272 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-20 11:00:39,277 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-20 11:00:39,277 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-20 11:00:39,278 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-20 11:00:39,278 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-20 11:00:39,279 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-20 11:00:39,279 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-20 11:00:39,310 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-20 11:00:39,393 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 11:00:39,393 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 11:00:39,483 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:00:39,676 INFO L208 MainTranslator]: Completed translation [2022-11-20 11:00:39,676 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:00:39 WrapperNode [2022-11-20 11:00:39,676 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 11:00:39,677 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 11:00:39,677 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 11:00:39,678 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 11:00:39,685 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:00:39" (1/1) ... [2022-11-20 11:00:39,765 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:00:39" (1/1) ... [2022-11-20 11:00:39,900 INFO L138 Inliner]: procedures = 691, calls = 2623, calls flagged for inlining = 63, calls inlined = 11, statements flattened = 936 [2022-11-20 11:00:39,900 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 11:00:39,901 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 11:00:39,901 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 11:00:39,901 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 11:00:39,914 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:00:39" (1/1) ... [2022-11-20 11:00:39,915 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:00:39" (1/1) ... [2022-11-20 11:00:39,937 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:00:39" (1/1) ... [2022-11-20 11:00:39,941 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:00:39" (1/1) ... [2022-11-20 11:00:39,985 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:00:39" (1/1) ... [2022-11-20 11:00:39,993 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:00:39" (1/1) ... [2022-11-20 11:00:40,009 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:00:39" (1/1) ... [2022-11-20 11:00:40,014 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:00:39" (1/1) ... [2022-11-20 11:00:40,038 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 11:00:40,039 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 11:00:40,039 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 11:00:40,039 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 11:00:40,046 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:00:39" (1/1) ... [2022-11-20 11:00:40,053 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:00:40,068 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2e4569-a56e-416a-a5f9-0e148068e73f/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:00:40,086 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2e4569-a56e-416a-a5f9-0e148068e73f/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 11:00:40,114 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2e4569-a56e-416a-a5f9-0e148068e73f/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 11:00:40,137 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2022-11-20 11:00:40,137 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2022-11-20 11:00:40,137 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 11:00:40,137 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-11-20 11:00:40,138 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-11-20 11:00:40,138 INFO L130 BoogieDeclarations]: Found specification of procedure aws_allocator_is_valid [2022-11-20 11:00:40,138 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_allocator_is_valid [2022-11-20 11:00:40,138 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 11:00:40,139 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2022-11-20 11:00:40,139 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2022-11-20 11:00:40,139 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-20 11:00:40,140 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-20 11:00:40,140 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 11:00:40,140 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 11:00:40,140 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-20 11:00:40,141 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2022-11-20 11:00:40,141 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2022-11-20 11:00:40,141 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 11:00:40,141 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 11:00:40,142 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-11-20 11:00:40,142 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-11-20 11:00:40,142 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2022-11-20 11:00:40,142 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2022-11-20 11:00:40,142 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2022-11-20 11:00:40,142 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2022-11-20 11:00:40,143 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-20 11:00:40,143 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-20 11:00:40,144 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-20 11:00:40,144 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-20 11:00:40,144 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2022-11-20 11:00:40,145 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2022-11-20 11:00:40,145 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_acquire [2022-11-20 11:00:40,145 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_acquire [2022-11-20 11:00:40,145 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 11:00:40,145 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-20 11:00:40,145 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-20 11:00:40,146 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2022-11-20 11:00:40,147 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2022-11-20 11:00:40,147 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2022-11-20 11:00:40,147 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2022-11-20 11:00:40,147 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 11:00:40,147 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 11:00:40,623 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 11:00:40,626 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 11:00:42,456 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 11:00:42,485 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 11:00:42,487 INFO L300 CfgBuilder]: Removed 7 assume(true) statements. [2022-11-20 11:00:42,490 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:00:42 BoogieIcfgContainer [2022-11-20 11:00:42,494 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 11:00:42,497 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 11:00:42,497 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 11:00:42,502 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 11:00:42,502 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:00:36" (1/3) ... [2022-11-20 11:00:42,505 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@760ae53d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:00:42, skipping insertion in model container [2022-11-20 11:00:42,505 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:00:39" (2/3) ... [2022-11-20 11:00:42,506 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@760ae53d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:00:42, skipping insertion in model container [2022-11-20 11:00:42,507 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:00:42" (3/3) ... [2022-11-20 11:00:42,509 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_init_copy_harness.i [2022-11-20 11:00:42,533 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 11:00:42,535 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 11:00:42,622 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 11:00:42,636 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;@28dc69d7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 11:00:42,636 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 11:00:42,642 INFO L276 IsEmpty]: Start isEmpty. Operand has 185 states, 122 states have (on average 1.221311475409836) internal successors, (149), 121 states have internal predecessors, (149), 49 states have call successors, (49), 15 states have call predecessors, (49), 15 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2022-11-20 11:00:42,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-11-20 11:00:42,662 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:00:42,663 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 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] [2022-11-20 11:00:42,664 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:00:42,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:00:42,673 INFO L85 PathProgramCache]: Analyzing trace with hash -283420546, now seen corresponding path program 1 times [2022-11-20 11:00:42,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:00:42,686 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030095323] [2022-11-20 11:00:42,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:00:42,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:00:43,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:43,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 11:00:43,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:43,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-20 11:00:43,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:43,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 11:00:43,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:43,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:00:43,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:43,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-20 11:00:43,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:43,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-20 11:00:43,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:43,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-20 11:00:43,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:43,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:00:43,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:43,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-20 11:00:43,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:43,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-20 11:00:43,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:43,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-20 11:00:43,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:43,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-20 11:00:43,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:43,670 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-11-20 11:00:43,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:00:43,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030095323] [2022-11-20 11:00:43,671 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030095323] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:00:43,672 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:00:43,672 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:00:43,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211428528] [2022-11-20 11:00:43,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:00:43,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:00:43,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:00:43,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:00:43,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:00:43,736 INFO L87 Difference]: Start difference. First operand has 185 states, 122 states have (on average 1.221311475409836) internal successors, (149), 121 states have internal predecessors, (149), 49 states have call successors, (49), 15 states have call predecessors, (49), 15 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-20 11:00:44,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:00:44,280 INFO L93 Difference]: Finished difference Result 376 states and 532 transitions. [2022-11-20 11:00:44,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:00:44,284 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) Word has length 82 [2022-11-20 11:00:44,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:00:44,296 INFO L225 Difference]: With dead ends: 376 [2022-11-20 11:00:44,297 INFO L226 Difference]: Without dead ends: 189 [2022-11-20 11:00:44,302 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:00:44,306 INFO L413 NwaCegarLoop]: 157 mSDtfsCounter, 82 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 226 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 11:00:44,307 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 226 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-20 11:00:44,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2022-11-20 11:00:44,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 179. [2022-11-20 11:00:44,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 114 states have (on average 1.1666666666666667) internal successors, (133), 115 states have internal predecessors, (133), 49 states have call successors, (49), 15 states have call predecessors, (49), 15 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2022-11-20 11:00:44,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 230 transitions. [2022-11-20 11:00:44,375 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 230 transitions. Word has length 82 [2022-11-20 11:00:44,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:00:44,376 INFO L495 AbstractCegarLoop]: Abstraction has 179 states and 230 transitions. [2022-11-20 11:00:44,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-20 11:00:44,376 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 230 transitions. [2022-11-20 11:00:44,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-20 11:00:44,380 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:00:44,381 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:00:44,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 11:00:44,382 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:00:44,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:00:44,383 INFO L85 PathProgramCache]: Analyzing trace with hash 426190495, now seen corresponding path program 1 times [2022-11-20 11:00:44,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:00:44,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570268254] [2022-11-20 11:00:44,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:00:44,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:00:44,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:45,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 11:00:45,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:45,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-20 11:00:45,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:45,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 11:00:45,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:45,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:00:45,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:45,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-20 11:00:45,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:45,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-20 11:00:45,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:45,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-20 11:00:45,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:45,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:00:45,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:45,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-20 11:00:45,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:45,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-20 11:00:45,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:45,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-20 11:00:45,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:45,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-20 11:00:45,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:45,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-20 11:00:45,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:45,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-11-20 11:00:45,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:45,394 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-11-20 11:00:45,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:00:45,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570268254] [2022-11-20 11:00:45,395 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570268254] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:00:45,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [138948560] [2022-11-20 11:00:45,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:00:45,396 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:00:45,396 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2e4569-a56e-416a-a5f9-0e148068e73f/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:00:45,400 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2e4569-a56e-416a-a5f9-0e148068e73f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:00:45,418 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2e4569-a56e-416a-a5f9-0e148068e73f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 11:00:46,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:46,040 INFO L263 TraceCheckSpWp]: Trace formula consists of 2594 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 11:00:46,051 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:00:46,168 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-11-20 11:00:46,168 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:00:46,168 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [138948560] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:00:46,169 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:00:46,169 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2022-11-20 11:00:46,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951998442] [2022-11-20 11:00:46,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:00:46,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:00:46,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:00:46,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:00:46,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-11-20 11:00:46,173 INFO L87 Difference]: Start difference. First operand 179 states and 230 transitions. Second operand has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-20 11:00:46,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:00:46,274 INFO L93 Difference]: Finished difference Result 248 states and 316 transitions. [2022-11-20 11:00:46,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 11:00:46,276 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) Word has length 92 [2022-11-20 11:00:46,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:00:46,290 INFO L225 Difference]: With dead ends: 248 [2022-11-20 11:00:46,290 INFO L226 Difference]: Without dead ends: 173 [2022-11-20 11:00:46,292 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-20 11:00:46,295 INFO L413 NwaCegarLoop]: 228 mSDtfsCounter, 1 mSDsluCounter, 900 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1128 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:00:46,299 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1128 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:00:46,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2022-11-20 11:00:46,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 173. [2022-11-20 11:00:46,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 110 states have (on average 1.1545454545454545) internal successors, (127), 111 states have internal predecessors, (127), 47 states have call successors, (47), 15 states have call predecessors, (47), 15 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2022-11-20 11:00:46,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 220 transitions. [2022-11-20 11:00:46,340 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 220 transitions. Word has length 92 [2022-11-20 11:00:46,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:00:46,343 INFO L495 AbstractCegarLoop]: Abstraction has 173 states and 220 transitions. [2022-11-20 11:00:46,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-20 11:00:46,343 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 220 transitions. [2022-11-20 11:00:46,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-11-20 11:00:46,349 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:00:46,349 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:00:46,368 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2e4569-a56e-416a-a5f9-0e148068e73f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 11:00:46,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2e4569-a56e-416a-a5f9-0e148068e73f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-11-20 11:00:46,560 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:00:46,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:00:46,561 INFO L85 PathProgramCache]: Analyzing trace with hash -1901749225, now seen corresponding path program 1 times [2022-11-20 11:00:46,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:00:46,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936082625] [2022-11-20 11:00:46,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:00:46,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:00:46,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:47,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 11:00:47,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:47,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-20 11:00:47,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:47,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 11:00:47,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:47,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:00:47,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:47,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-20 11:00:47,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:47,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-20 11:00:47,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:47,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-20 11:00:47,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:47,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:00:47,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:47,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-20 11:00:47,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:47,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-20 11:00:47,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:47,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-20 11:00:47,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:47,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-20 11:00:47,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:47,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-20 11:00:47,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:47,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-20 11:00:47,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:47,535 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-11-20 11:00:47,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:00:47,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936082625] [2022-11-20 11:00:47,536 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936082625] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:00:47,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1327187682] [2022-11-20 11:00:47,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:00:47,537 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:00:47,537 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2e4569-a56e-416a-a5f9-0e148068e73f/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:00:47,539 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2e4569-a56e-416a-a5f9-0e148068e73f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:00:47,562 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2e4569-a56e-416a-a5f9-0e148068e73f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 11:00:48,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:48,201 INFO L263 TraceCheckSpWp]: Trace formula consists of 2618 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-20 11:00:48,207 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:00:48,366 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-11-20 11:00:48,367 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:00:48,367 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1327187682] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:00:48,367 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:00:48,367 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 11 [2022-11-20 11:00:48,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580192768] [2022-11-20 11:00:48,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:00:48,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 11:00:48,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:00:48,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 11:00:48,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-11-20 11:00:48,373 INFO L87 Difference]: Start difference. First operand 173 states and 220 transitions. Second operand has 8 states, 8 states have (on average 5.75) internal successors, (46), 7 states have internal predecessors, (46), 4 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 5 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-20 11:00:48,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:00:48,681 INFO L93 Difference]: Finished difference Result 249 states and 320 transitions. [2022-11-20 11:00:48,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 11:00:48,683 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 7 states have internal predecessors, (46), 4 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 5 states have call predecessors, (13), 3 states have call successors, (13) Word has length 95 [2022-11-20 11:00:48,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:00:48,688 INFO L225 Difference]: With dead ends: 249 [2022-11-20 11:00:48,688 INFO L226 Difference]: Without dead ends: 176 [2022-11-20 11:00:48,689 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-20 11:00:48,693 INFO L413 NwaCegarLoop]: 204 mSDtfsCounter, 78 mSDsluCounter, 890 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 1094 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:00:48,694 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 1094 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 11:00:48,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2022-11-20 11:00:48,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 176. [2022-11-20 11:00:48,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 112 states have (on average 1.1517857142857142) internal successors, (129), 114 states have internal predecessors, (129), 47 states have call successors, (47), 15 states have call predecessors, (47), 16 states have return successors, (49), 46 states have call predecessors, (49), 46 states have call successors, (49) [2022-11-20 11:00:48,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 225 transitions. [2022-11-20 11:00:48,738 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 225 transitions. Word has length 95 [2022-11-20 11:00:48,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:00:48,739 INFO L495 AbstractCegarLoop]: Abstraction has 176 states and 225 transitions. [2022-11-20 11:00:48,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 7 states have internal predecessors, (46), 4 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 5 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-20 11:00:48,739 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 225 transitions. [2022-11-20 11:00:48,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-11-20 11:00:48,746 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:00:48,747 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:00:48,761 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2e4569-a56e-416a-a5f9-0e148068e73f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-20 11:00:48,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2e4569-a56e-416a-a5f9-0e148068e73f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:00:48,957 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:00:48,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:00:48,958 INFO L85 PathProgramCache]: Analyzing trace with hash 1019605314, now seen corresponding path program 1 times [2022-11-20 11:00:48,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:00:48,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612336086] [2022-11-20 11:00:48,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:00:48,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:00:49,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:49,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 11:00:49,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:49,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-20 11:00:49,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:49,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 11:00:49,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:49,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:00:49,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:49,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-20 11:00:49,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:49,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-20 11:00:49,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:49,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-20 11:00:49,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:49,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:00:49,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:49,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-20 11:00:49,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:49,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-20 11:00:49,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:49,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-20 11:00:49,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:49,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-20 11:00:49,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:49,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-20 11:00:49,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:49,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-20 11:00:49,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:49,678 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-11-20 11:00:49,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:00:49,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612336086] [2022-11-20 11:00:49,679 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612336086] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:00:49,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [882723427] [2022-11-20 11:00:49,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:00:49,679 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:00:49,679 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2e4569-a56e-416a-a5f9-0e148068e73f/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:00:49,683 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2e4569-a56e-416a-a5f9-0e148068e73f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:00:49,710 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2e4569-a56e-416a-a5f9-0e148068e73f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 11:00:50,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:50,261 INFO L263 TraceCheckSpWp]: Trace formula consists of 2635 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 11:00:50,265 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:00:50,404 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-11-20 11:00:50,404 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:00:50,405 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [882723427] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:00:50,405 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:00:50,405 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2022-11-20 11:00:50,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754685986] [2022-11-20 11:00:50,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:00:50,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:00:50,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:00:50,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:00:50,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-11-20 11:00:50,407 INFO L87 Difference]: Start difference. First operand 176 states and 225 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-20 11:00:50,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:00:50,685 INFO L93 Difference]: Finished difference Result 338 states and 429 transitions. [2022-11-20 11:00:50,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 11:00:50,687 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 101 [2022-11-20 11:00:50,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:00:50,689 INFO L225 Difference]: With dead ends: 338 [2022-11-20 11:00:50,689 INFO L226 Difference]: Without dead ends: 176 [2022-11-20 11:00:50,690 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2022-11-20 11:00:50,691 INFO L413 NwaCegarLoop]: 176 mSDtfsCounter, 249 mSDsluCounter, 303 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 479 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:00:50,691 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [249 Valid, 479 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 11:00:50,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2022-11-20 11:00:50,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 176. [2022-11-20 11:00:50,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 112 states have (on average 1.1517857142857142) internal successors, (129), 114 states have internal predecessors, (129), 47 states have call successors, (47), 15 states have call predecessors, (47), 16 states have return successors, (47), 46 states have call predecessors, (47), 46 states have call successors, (47) [2022-11-20 11:00:50,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 223 transitions. [2022-11-20 11:00:50,707 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 223 transitions. Word has length 101 [2022-11-20 11:00:50,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:00:50,707 INFO L495 AbstractCegarLoop]: Abstraction has 176 states and 223 transitions. [2022-11-20 11:00:50,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-20 11:00:50,708 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 223 transitions. [2022-11-20 11:00:50,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-11-20 11:00:50,709 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:00:50,709 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:00:50,730 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2e4569-a56e-416a-a5f9-0e148068e73f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 11:00:50,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2e4569-a56e-416a-a5f9-0e148068e73f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:00:50,920 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:00:50,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:00:50,920 INFO L85 PathProgramCache]: Analyzing trace with hash -2090058387, now seen corresponding path program 2 times [2022-11-20 11:00:50,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:00:50,921 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149126636] [2022-11-20 11:00:50,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:00:50,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:00:51,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:51,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 11:00:51,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:51,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-20 11:00:51,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:51,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 11:00:51,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:51,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:00:51,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:51,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-20 11:00:51,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:51,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-20 11:00:51,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:51,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-20 11:00:51,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:51,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:00:51,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:51,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-20 11:00:51,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:51,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-20 11:00:51,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:51,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-20 11:00:51,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:51,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-20 11:00:51,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:51,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-11-20 11:00:51,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:51,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-11-20 11:00:51,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:51,719 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2022-11-20 11:00:51,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:00:51,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149126636] [2022-11-20 11:00:51,720 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149126636] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:00:51,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [148605276] [2022-11-20 11:00:51,720 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:00:51,721 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:00:51,721 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2e4569-a56e-416a-a5f9-0e148068e73f/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:00:51,737 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2e4569-a56e-416a-a5f9-0e148068e73f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:00:51,766 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2e4569-a56e-416a-a5f9-0e148068e73f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 11:00:52,325 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 11:00:52,325 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:00:52,337 INFO L263 TraceCheckSpWp]: Trace formula consists of 2299 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-20 11:00:52,342 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:00:52,450 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2022-11-20 11:00:52,450 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:00:52,450 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [148605276] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:00:52,450 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:00:52,451 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 14 [2022-11-20 11:00:52,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440020618] [2022-11-20 11:00:52,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:00:52,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 11:00:52,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:00:52,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 11:00:52,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-11-20 11:00:52,453 INFO L87 Difference]: Start difference. First operand 176 states and 223 transitions. Second operand has 8 states, 7 states have (on average 7.285714285714286) internal successors, (51), 6 states have internal predecessors, (51), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2022-11-20 11:00:52,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:00:52,583 INFO L93 Difference]: Finished difference Result 188 states and 240 transitions. [2022-11-20 11:00:52,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 11:00:52,584 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 7.285714285714286) internal successors, (51), 6 states have internal predecessors, (51), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) Word has length 107 [2022-11-20 11:00:52,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:00:52,587 INFO L225 Difference]: With dead ends: 188 [2022-11-20 11:00:52,587 INFO L226 Difference]: Without dead ends: 186 [2022-11-20 11:00:52,588 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2022-11-20 11:00:52,588 INFO L413 NwaCegarLoop]: 219 mSDtfsCounter, 23 mSDsluCounter, 1263 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 1482 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:00:52,589 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 1482 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:00:52,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2022-11-20 11:00:52,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 185. [2022-11-20 11:00:52,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 118 states have (on average 1.1440677966101696) internal successors, (135), 121 states have internal predecessors, (135), 48 states have call successors, (48), 16 states have call predecessors, (48), 18 states have return successors, (54), 47 states have call predecessors, (54), 47 states have call successors, (54) [2022-11-20 11:00:52,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 237 transitions. [2022-11-20 11:00:52,607 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 237 transitions. Word has length 107 [2022-11-20 11:00:52,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:00:52,608 INFO L495 AbstractCegarLoop]: Abstraction has 185 states and 237 transitions. [2022-11-20 11:00:52,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 7.285714285714286) internal successors, (51), 6 states have internal predecessors, (51), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2022-11-20 11:00:52,609 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 237 transitions. [2022-11-20 11:00:52,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-11-20 11:00:52,610 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:00:52,610 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:00:52,625 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2e4569-a56e-416a-a5f9-0e148068e73f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-20 11:00:52,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2e4569-a56e-416a-a5f9-0e148068e73f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:00:52,825 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:00:52,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:00:52,825 INFO L85 PathProgramCache]: Analyzing trace with hash -1813963275, now seen corresponding path program 1 times [2022-11-20 11:00:52,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:00:52,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467007815] [2022-11-20 11:00:52,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:00:52,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:00:52,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:53,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 11:00:53,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:53,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-20 11:00:53,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:53,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 11:00:53,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:53,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:00:53,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:53,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-20 11:00:53,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:53,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-20 11:00:53,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:53,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-20 11:00:53,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:53,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:00:53,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:53,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-20 11:00:53,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:53,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-20 11:00:53,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:53,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-20 11:00:53,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:53,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-20 11:00:53,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:53,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-11-20 11:00:53,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:53,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-11-20 11:00:53,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:53,675 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2022-11-20 11:00:53,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:00:53,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467007815] [2022-11-20 11:00:53,676 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467007815] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:00:53,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [567194420] [2022-11-20 11:00:53,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:00:53,677 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:00:53,677 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2e4569-a56e-416a-a5f9-0e148068e73f/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:00:53,678 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2e4569-a56e-416a-a5f9-0e148068e73f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:00:53,709 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2e4569-a56e-416a-a5f9-0e148068e73f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-20 11:00:54,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:54,321 INFO L263 TraceCheckSpWp]: Trace formula consists of 2664 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 11:00:54,327 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:00:54,516 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-11-20 11:00:54,516 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:00:54,516 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [567194420] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:00:54,517 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:00:54,517 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2022-11-20 11:00:54,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104195508] [2022-11-20 11:00:54,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:00:54,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:00:54,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:00:54,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:00:54,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2022-11-20 11:00:54,519 INFO L87 Difference]: Start difference. First operand 185 states and 237 transitions. Second operand has 7 states, 6 states have (on average 10.666666666666666) internal successors, (64), 7 states have internal predecessors, (64), 4 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2022-11-20 11:00:54,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:00:54,901 INFO L93 Difference]: Finished difference Result 342 states and 429 transitions. [2022-11-20 11:00:54,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 11:00:54,902 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.666666666666666) internal successors, (64), 7 states have internal predecessors, (64), 4 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 111 [2022-11-20 11:00:54,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:00:54,903 INFO L225 Difference]: With dead ends: 342 [2022-11-20 11:00:54,903 INFO L226 Difference]: Without dead ends: 182 [2022-11-20 11:00:54,904 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2022-11-20 11:00:54,905 INFO L413 NwaCegarLoop]: 173 mSDtfsCounter, 275 mSDsluCounter, 596 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 275 SdHoareTripleChecker+Valid, 769 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 11:00:54,905 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [275 Valid, 769 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 11:00:54,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2022-11-20 11:00:54,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2022-11-20 11:00:54,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 116 states have (on average 1.1379310344827587) internal successors, (132), 118 states have internal predecessors, (132), 48 states have call successors, (48), 16 states have call predecessors, (48), 17 states have return successors, (53), 47 states have call predecessors, (53), 47 states have call successors, (53) [2022-11-20 11:00:54,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 233 transitions. [2022-11-20 11:00:54,919 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 233 transitions. Word has length 111 [2022-11-20 11:00:54,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:00:54,920 INFO L495 AbstractCegarLoop]: Abstraction has 182 states and 233 transitions. [2022-11-20 11:00:54,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.666666666666666) internal successors, (64), 7 states have internal predecessors, (64), 4 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2022-11-20 11:00:54,920 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 233 transitions. [2022-11-20 11:00:54,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-11-20 11:00:54,922 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:00:54,922 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-20 11:00:54,937 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2e4569-a56e-416a-a5f9-0e148068e73f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-20 11:00:55,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2e4569-a56e-416a-a5f9-0e148068e73f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-20 11:00:55,137 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:00:55,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:00:55,138 INFO L85 PathProgramCache]: Analyzing trace with hash 693216864, now seen corresponding path program 1 times [2022-11-20 11:00:55,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:00:55,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540689770] [2022-11-20 11:00:55,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:00:55,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:00:55,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:55,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 11:00:55,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:55,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-20 11:00:55,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:55,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 11:00:55,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:55,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:00:55,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:55,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-20 11:00:55,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:55,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-20 11:00:55,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:55,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-20 11:00:55,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:55,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:00:55,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:55,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-20 11:00:55,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:55,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-20 11:00:55,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:55,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-20 11:00:55,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:55,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-20 11:00:55,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:55,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-11-20 11:00:55,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:55,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-11-20 11:00:55,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:55,923 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2022-11-20 11:00:55,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:00:55,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540689770] [2022-11-20 11:00:55,924 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [540689770] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:00:55,924 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:00:55,924 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 11:00:55,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393162792] [2022-11-20 11:00:55,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:00:55,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:00:55,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:00:55,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:00:55,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:00:55,926 INFO L87 Difference]: Start difference. First operand 182 states and 233 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-20 11:00:56,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:00:56,712 INFO L93 Difference]: Finished difference Result 286 states and 361 transitions. [2022-11-20 11:00:56,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 11:00:56,712 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 117 [2022-11-20 11:00:56,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:00:56,714 INFO L225 Difference]: With dead ends: 286 [2022-11-20 11:00:56,714 INFO L226 Difference]: Without dead ends: 200 [2022-11-20 11:00:56,715 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-11-20 11:00:56,715 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 170 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 497 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 347 SdHoareTripleChecker+Invalid, 618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 497 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-20 11:00:56,716 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 347 Invalid, 618 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 497 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-20 11:00:56,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2022-11-20 11:00:56,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 183. [2022-11-20 11:00:56,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 117 states have (on average 1.1367521367521367) internal successors, (133), 119 states have internal predecessors, (133), 48 states have call successors, (48), 16 states have call predecessors, (48), 17 states have return successors, (53), 47 states have call predecessors, (53), 47 states have call successors, (53) [2022-11-20 11:00:56,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 234 transitions. [2022-11-20 11:00:56,732 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 234 transitions. Word has length 117 [2022-11-20 11:00:56,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:00:56,732 INFO L495 AbstractCegarLoop]: Abstraction has 183 states and 234 transitions. [2022-11-20 11:00:56,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-20 11:00:56,733 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 234 transitions. [2022-11-20 11:00:56,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-11-20 11:00:56,734 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:00:56,734 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-20 11:00:56,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 11:00:56,735 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:00:56,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:00:56,735 INFO L85 PathProgramCache]: Analyzing trace with hash -1457718631, now seen corresponding path program 1 times [2022-11-20 11:00:56,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:00:56,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679205930] [2022-11-20 11:00:56,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:00:56,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:00:56,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:57,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 11:00:57,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:57,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-20 11:00:57,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:57,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 11:00:57,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:57,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:00:57,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:57,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-20 11:00:57,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:57,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-20 11:00:57,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:57,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-20 11:00:57,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:57,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:00:57,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:57,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-20 11:00:57,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:57,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-20 11:00:57,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:57,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-20 11:00:57,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:57,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-20 11:00:57,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:57,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-11-20 11:00:57,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:57,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-20 11:00:57,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:57,636 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2022-11-20 11:00:57,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:00:57,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679205930] [2022-11-20 11:00:57,637 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679205930] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:00:57,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1208386153] [2022-11-20 11:00:57,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:00:57,638 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:00:57,638 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2e4569-a56e-416a-a5f9-0e148068e73f/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:00:57,640 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2e4569-a56e-416a-a5f9-0e148068e73f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:00:57,649 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2e4569-a56e-416a-a5f9-0e148068e73f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-20 11:00:58,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:58,291 INFO L263 TraceCheckSpWp]: Trace formula consists of 2700 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 11:00:58,296 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:00:58,491 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2022-11-20 11:00:58,492 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:00:58,492 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1208386153] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:00:58,492 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:00:58,492 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2022-11-20 11:00:58,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742628318] [2022-11-20 11:00:58,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:00:58,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 11:00:58,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:00:58,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 11:00:58,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-20 11:00:58,494 INFO L87 Difference]: Start difference. First operand 183 states and 234 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2022-11-20 11:00:58,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:00:58,790 INFO L93 Difference]: Finished difference Result 370 states and 486 transitions. [2022-11-20 11:00:58,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:00:58,790 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) Word has length 118 [2022-11-20 11:00:58,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:00:58,792 INFO L225 Difference]: With dead ends: 370 [2022-11-20 11:00:58,792 INFO L226 Difference]: Without dead ends: 201 [2022-11-20 11:00:58,793 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-11-20 11:00:58,794 INFO L413 NwaCegarLoop]: 223 mSDtfsCounter, 40 mSDsluCounter, 559 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 782 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 40 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:00:58,794 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 782 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 85 Invalid, 0 Unknown, 40 Unchecked, 0.2s Time] [2022-11-20 11:00:58,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2022-11-20 11:00:58,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 188. [2022-11-20 11:00:58,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 122 states have (on average 1.1475409836065573) internal successors, (140), 124 states have internal predecessors, (140), 48 states have call successors, (48), 16 states have call predecessors, (48), 17 states have return successors, (53), 47 states have call predecessors, (53), 47 states have call successors, (53) [2022-11-20 11:00:58,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 241 transitions. [2022-11-20 11:00:58,810 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 241 transitions. Word has length 118 [2022-11-20 11:00:58,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:00:58,811 INFO L495 AbstractCegarLoop]: Abstraction has 188 states and 241 transitions. [2022-11-20 11:00:58,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2022-11-20 11:00:58,811 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 241 transitions. [2022-11-20 11:00:58,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-11-20 11:00:58,813 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:00:58,813 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-20 11:00:58,828 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2e4569-a56e-416a-a5f9-0e148068e73f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-20 11:00:59,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2e4569-a56e-416a-a5f9-0e148068e73f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:00:59,023 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:00:59,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:00:59,023 INFO L85 PathProgramCache]: Analyzing trace with hash -1199553193, now seen corresponding path program 1 times [2022-11-20 11:00:59,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:00:59,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497767134] [2022-11-20 11:00:59,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:00:59,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:00:59,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:59,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 11:00:59,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:59,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-20 11:00:59,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:59,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 11:00:59,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:59,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:00:59,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:59,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-20 11:00:59,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:59,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-20 11:00:59,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:59,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-20 11:00:59,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:59,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:00:59,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:59,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-20 11:00:59,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:59,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-20 11:00:59,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:59,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-20 11:00:59,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:59,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-20 11:00:59,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:59,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-11-20 11:00:59,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:59,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-20 11:00:59,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:00,006 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2022-11-20 11:01:00,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:01:00,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497767134] [2022-11-20 11:01:00,007 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497767134] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:01:00,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1478317629] [2022-11-20 11:01:00,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:01:00,008 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:01:00,008 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2e4569-a56e-416a-a5f9-0e148068e73f/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:01:00,009 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2e4569-a56e-416a-a5f9-0e148068e73f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:01:00,026 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2e4569-a56e-416a-a5f9-0e148068e73f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-20 11:01:00,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:00,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 2695 conjuncts, 36 conjunts are in the unsatisfiable core [2022-11-20 11:01:00,636 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:01:00,792 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 11:01:01,118 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-11-20 11:01:01,118 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:01:01,118 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1478317629] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:01:01,118 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:01:01,119 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [7] total 17 [2022-11-20 11:01:01,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670250224] [2022-11-20 11:01:01,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:01:01,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 11:01:01,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:01:01,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 11:01:01,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2022-11-20 11:01:01,121 INFO L87 Difference]: Start difference. First operand 188 states and 241 transitions. Second operand has 12 states, 12 states have (on average 5.666666666666667) internal successors, (68), 10 states have internal predecessors, (68), 5 states have call successors, (15), 3 states have call predecessors, (15), 4 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) [2022-11-20 11:01:01,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:01:01,221 INFO L93 Difference]: Finished difference Result 385 states and 490 transitions. [2022-11-20 11:01:01,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-20 11:01:01,222 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.666666666666667) internal successors, (68), 10 states have internal predecessors, (68), 5 states have call successors, (15), 3 states have call predecessors, (15), 4 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) Word has length 118 [2022-11-20 11:01:01,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:01:01,223 INFO L225 Difference]: With dead ends: 385 [2022-11-20 11:01:01,224 INFO L226 Difference]: Without dead ends: 207 [2022-11-20 11:01:01,225 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2022-11-20 11:01:01,225 INFO L413 NwaCegarLoop]: 214 mSDtfsCounter, 34 mSDsluCounter, 797 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 1011 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 70 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:01:01,226 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 1011 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 33 Invalid, 0 Unknown, 70 Unchecked, 0.0s Time] [2022-11-20 11:01:01,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2022-11-20 11:01:01,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 207. [2022-11-20 11:01:01,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 140 states have (on average 1.1642857142857144) internal successors, (163), 142 states have internal predecessors, (163), 48 states have call successors, (48), 17 states have call predecessors, (48), 18 states have return successors, (53), 47 states have call predecessors, (53), 47 states have call successors, (53) [2022-11-20 11:01:01,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 264 transitions. [2022-11-20 11:01:01,242 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 264 transitions. Word has length 118 [2022-11-20 11:01:01,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:01:01,242 INFO L495 AbstractCegarLoop]: Abstraction has 207 states and 264 transitions. [2022-11-20 11:01:01,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.666666666666667) internal successors, (68), 10 states have internal predecessors, (68), 5 states have call successors, (15), 3 states have call predecessors, (15), 4 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) [2022-11-20 11:01:01,243 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 264 transitions. [2022-11-20 11:01:01,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-11-20 11:01:01,245 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:01:01,245 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 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] [2022-11-20 11:01:01,262 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2e4569-a56e-416a-a5f9-0e148068e73f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-20 11:01:01,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2e4569-a56e-416a-a5f9-0e148068e73f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:01:01,463 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:01:01,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:01:01,464 INFO L85 PathProgramCache]: Analyzing trace with hash 1136839317, now seen corresponding path program 1 times [2022-11-20 11:01:01,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:01:01,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772716198] [2022-11-20 11:01:01,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:01:01,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:01:01,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:01,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 11:01:01,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:01,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-20 11:01:01,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:01,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 11:01:01,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:01,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:01:01,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:01,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-20 11:01:01,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:01,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-20 11:01:01,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:01,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-20 11:01:01,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:01,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:01:01,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:01,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-20 11:01:01,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:01,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-20 11:01:01,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:01,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-20 11:01:01,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:01,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-20 11:01:01,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:01,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-11-20 11:01:01,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:01,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-20 11:01:01,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:01,940 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2022-11-20 11:01:01,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:01:01,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772716198] [2022-11-20 11:01:01,941 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772716198] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:01:01,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [527004743] [2022-11-20 11:01:01,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:01:01,942 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:01:01,942 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2e4569-a56e-416a-a5f9-0e148068e73f/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:01:01,947 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2e4569-a56e-416a-a5f9-0e148068e73f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:01:01,970 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2e4569-a56e-416a-a5f9-0e148068e73f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-20 11:01:02,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:02,555 INFO L263 TraceCheckSpWp]: Trace formula consists of 2690 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 11:01:02,558 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:01:02,567 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-11-20 11:01:02,568 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:01:02,568 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [527004743] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:01:02,568 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:01:02,568 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 6 [2022-11-20 11:01:02,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027583012] [2022-11-20 11:01:02,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:01:02,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:01:02,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:01:02,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:01:02,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:01:02,570 INFO L87 Difference]: Start difference. First operand 207 states and 264 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-20 11:01:02,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:01:02,611 INFO L93 Difference]: Finished difference Result 394 states and 507 transitions. [2022-11-20 11:01:02,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:01:02,612 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (15), 2 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 118 [2022-11-20 11:01:02,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:01:02,613 INFO L225 Difference]: With dead ends: 394 [2022-11-20 11:01:02,614 INFO L226 Difference]: Without dead ends: 216 [2022-11-20 11:01:02,614 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:01:02,615 INFO L413 NwaCegarLoop]: 230 mSDtfsCounter, 20 mSDsluCounter, 419 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 649 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:01:02,616 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 649 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:01:02,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2022-11-20 11:01:02,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 199. [2022-11-20 11:01:02,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 133 states have (on average 1.1578947368421053) internal successors, (154), 134 states have internal predecessors, (154), 48 states have call successors, (48), 17 states have call predecessors, (48), 17 states have return successors, (52), 47 states have call predecessors, (52), 47 states have call successors, (52) [2022-11-20 11:01:02,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 254 transitions. [2022-11-20 11:01:02,632 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 254 transitions. Word has length 118 [2022-11-20 11:01:02,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:01:02,633 INFO L495 AbstractCegarLoop]: Abstraction has 199 states and 254 transitions. [2022-11-20 11:01:02,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-20 11:01:02,633 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 254 transitions. [2022-11-20 11:01:02,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-11-20 11:01:02,635 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:01:02,635 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:01:02,650 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2e4569-a56e-416a-a5f9-0e148068e73f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-20 11:01:02,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2e4569-a56e-416a-a5f9-0e148068e73f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-20 11:01:02,850 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:01:02,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:01:02,851 INFO L85 PathProgramCache]: Analyzing trace with hash -2078172463, now seen corresponding path program 2 times [2022-11-20 11:01:02,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:01:02,851 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478739883] [2022-11-20 11:01:02,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:01:02,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:01:02,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:03,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 11:01:03,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:03,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-20 11:01:03,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:03,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 11:01:03,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:03,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:01:03,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:03,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-20 11:01:03,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:03,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-20 11:01:03,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:03,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-20 11:01:03,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:03,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:01:03,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:03,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-20 11:01:03,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:03,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-20 11:01:03,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:03,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-20 11:01:03,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:03,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-20 11:01:03,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:03,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-11-20 11:01:03,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:03,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-11-20 11:01:03,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:03,648 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2022-11-20 11:01:03,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:01:03,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478739883] [2022-11-20 11:01:03,649 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478739883] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:01:03,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [477919609] [2022-11-20 11:01:03,649 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:01:03,650 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:01:03,650 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2e4569-a56e-416a-a5f9-0e148068e73f/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:01:03,655 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2e4569-a56e-416a-a5f9-0e148068e73f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:01:03,678 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2e4569-a56e-416a-a5f9-0e148068e73f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-20 11:01:04,300 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 11:01:04,301 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:01:04,314 INFO L263 TraceCheckSpWp]: Trace formula consists of 2702 conjuncts, 38 conjunts are in the unsatisfiable core [2022-11-20 11:01:04,321 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:01:04,448 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 11:01:05,354 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 71 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-20 11:01:05,354 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:01:05,704 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 32 treesize of output 26 [2022-11-20 11:01:05,822 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 10 proven. 12 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2022-11-20 11:01:05,826 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [477919609] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:01:05,832 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:01:05,832 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 13, 11] total 26 [2022-11-20 11:01:05,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809767485] [2022-11-20 11:01:05,833 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:01:05,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-20 11:01:05,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:01:05,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-20 11:01:05,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=573, Unknown=0, NotChecked=0, Total=650 [2022-11-20 11:01:05,835 INFO L87 Difference]: Start difference. First operand 199 states and 254 transitions. Second operand has 26 states, 24 states have (on average 6.041666666666667) internal successors, (145), 22 states have internal predecessors, (145), 10 states have call successors, (37), 5 states have call predecessors, (37), 7 states have return successors, (36), 12 states have call predecessors, (36), 10 states have call successors, (36) [2022-11-20 11:01:08,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:01:08,915 INFO L93 Difference]: Finished difference Result 506 states and 658 transitions. [2022-11-20 11:01:08,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-20 11:01:08,916 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 24 states have (on average 6.041666666666667) internal successors, (145), 22 states have internal predecessors, (145), 10 states have call successors, (37), 5 states have call predecessors, (37), 7 states have return successors, (36), 12 states have call predecessors, (36), 10 states have call successors, (36) Word has length 122 [2022-11-20 11:01:08,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:01:08,922 INFO L225 Difference]: With dead ends: 506 [2022-11-20 11:01:08,922 INFO L226 Difference]: Without dead ends: 336 [2022-11-20 11:01:08,924 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 240 SyntacticMatches, 12 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 261 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=132, Invalid=1128, Unknown=0, NotChecked=0, Total=1260 [2022-11-20 11:01:08,925 INFO L413 NwaCegarLoop]: 144 mSDtfsCounter, 209 mSDsluCounter, 1322 mSDsCounter, 0 mSdLazyCounter, 2648 mSolverCounterSat, 190 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 243 SdHoareTripleChecker+Valid, 1466 SdHoareTripleChecker+Invalid, 3205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 190 IncrementalHoareTripleChecker+Valid, 2648 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 367 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-11-20 11:01:08,926 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [243 Valid, 1466 Invalid, 3205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [190 Valid, 2648 Invalid, 0 Unknown, 367 Unchecked, 2.7s Time] [2022-11-20 11:01:08,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2022-11-20 11:01:08,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 242. [2022-11-20 11:01:08,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 162 states have (on average 1.154320987654321) internal successors, (187), 165 states have internal predecessors, (187), 58 states have call successors, (58), 20 states have call predecessors, (58), 21 states have return successors, (64), 56 states have call predecessors, (64), 57 states have call successors, (64) [2022-11-20 11:01:08,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 309 transitions. [2022-11-20 11:01:08,961 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 309 transitions. Word has length 122 [2022-11-20 11:01:08,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:01:08,962 INFO L495 AbstractCegarLoop]: Abstraction has 242 states and 309 transitions. [2022-11-20 11:01:08,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 24 states have (on average 6.041666666666667) internal successors, (145), 22 states have internal predecessors, (145), 10 states have call successors, (37), 5 states have call predecessors, (37), 7 states have return successors, (36), 12 states have call predecessors, (36), 10 states have call successors, (36) [2022-11-20 11:01:08,962 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 309 transitions. [2022-11-20 11:01:08,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-11-20 11:01:08,965 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:01:08,965 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 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] [2022-11-20 11:01:08,987 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2e4569-a56e-416a-a5f9-0e148068e73f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-20 11:01:09,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2e4569-a56e-416a-a5f9-0e148068e73f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:01:09,177 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:01:09,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:01:09,177 INFO L85 PathProgramCache]: Analyzing trace with hash 407362865, now seen corresponding path program 1 times [2022-11-20 11:01:09,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:01:09,177 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321775582] [2022-11-20 11:01:09,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:01:09,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:01:09,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:09,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 11:01:09,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:09,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-20 11:01:09,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:09,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 11:01:09,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:09,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:01:09,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:09,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-20 11:01:09,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:09,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-20 11:01:09,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:09,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-20 11:01:09,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:09,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:01:09,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:09,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-20 11:01:09,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:09,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-20 11:01:09,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:09,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-20 11:01:09,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:09,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-20 11:01:09,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:09,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-11-20 11:01:09,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:09,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-20 11:01:09,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:09,710 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2022-11-20 11:01:09,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:01:09,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321775582] [2022-11-20 11:01:09,711 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321775582] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:01:09,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1331809022] [2022-11-20 11:01:09,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:01:09,712 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:01:09,712 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2e4569-a56e-416a-a5f9-0e148068e73f/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:01:09,713 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2e4569-a56e-416a-a5f9-0e148068e73f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:01:09,727 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2e4569-a56e-416a-a5f9-0e148068e73f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-20 11:01:10,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:10,320 INFO L263 TraceCheckSpWp]: Trace formula consists of 2738 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 11:01:10,325 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:01:10,333 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2022-11-20 11:01:10,334 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:01:10,334 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1331809022] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:01:10,334 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:01:10,334 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 6 [2022-11-20 11:01:10,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005098889] [2022-11-20 11:01:10,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:01:10,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:01:10,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:01:10,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:01:10,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:01:10,336 INFO L87 Difference]: Start difference. First operand 242 states and 309 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-20 11:01:10,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:01:10,381 INFO L93 Difference]: Finished difference Result 486 states and 625 transitions. [2022-11-20 11:01:10,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:01:10,382 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (15), 2 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 129 [2022-11-20 11:01:10,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:01:10,384 INFO L225 Difference]: With dead ends: 486 [2022-11-20 11:01:10,384 INFO L226 Difference]: Without dead ends: 258 [2022-11-20 11:01:10,385 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:01:10,386 INFO L413 NwaCegarLoop]: 216 mSDtfsCounter, 9 mSDsluCounter, 426 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 642 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 [2022-11-20 11:01:10,386 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 642 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:01:10,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2022-11-20 11:01:10,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 246. [2022-11-20 11:01:10,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 166 states have (on average 1.1506024096385543) internal successors, (191), 169 states have internal predecessors, (191), 58 states have call successors, (58), 20 states have call predecessors, (58), 21 states have return successors, (64), 56 states have call predecessors, (64), 57 states have call successors, (64) [2022-11-20 11:01:10,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 313 transitions. [2022-11-20 11:01:10,411 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 313 transitions. Word has length 129 [2022-11-20 11:01:10,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:01:10,411 INFO L495 AbstractCegarLoop]: Abstraction has 246 states and 313 transitions. [2022-11-20 11:01:10,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-20 11:01:10,412 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 313 transitions. [2022-11-20 11:01:10,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-11-20 11:01:10,414 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:01:10,414 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 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] [2022-11-20 11:01:10,425 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2e4569-a56e-416a-a5f9-0e148068e73f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-20 11:01:10,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2e4569-a56e-416a-a5f9-0e148068e73f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-20 11:01:10,624 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:01:10,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:01:10,625 INFO L85 PathProgramCache]: Analyzing trace with hash -1237588619, now seen corresponding path program 1 times [2022-11-20 11:01:10,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:01:10,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699199086] [2022-11-20 11:01:10,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:01:10,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:01:10,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:10,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 11:01:10,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:10,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-20 11:01:10,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:10,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 11:01:10,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:10,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:01:10,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:10,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-20 11:01:10,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:11,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-20 11:01:11,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:11,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-20 11:01:11,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:11,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:01:11,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:11,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-20 11:01:11,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:11,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-20 11:01:11,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:11,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-20 11:01:11,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:11,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-20 11:01:11,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:11,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-11-20 11:01:11,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:11,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-20 11:01:11,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:11,121 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2022-11-20 11:01:11,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:01:11,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699199086] [2022-11-20 11:01:11,122 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699199086] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:01:11,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1465300607] [2022-11-20 11:01:11,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:01:11,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:01:11,123 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2e4569-a56e-416a-a5f9-0e148068e73f/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:01:11,124 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2e4569-a56e-416a-a5f9-0e148068e73f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:01:11,142 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2e4569-a56e-416a-a5f9-0e148068e73f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-20 11:01:11,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:11,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 2740 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 11:01:11,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:01:11,740 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-11-20 11:01:11,740 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:01:11,740 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1465300607] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:01:11,740 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:01:11,741 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 6 [2022-11-20 11:01:11,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278375235] [2022-11-20 11:01:11,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:01:11,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:01:11,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:01:11,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:01:11,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:01:11,743 INFO L87 Difference]: Start difference. First operand 246 states and 313 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-20 11:01:11,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:01:11,787 INFO L93 Difference]: Finished difference Result 500 states and 641 transitions. [2022-11-20 11:01:11,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:01:11,788 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (15), 2 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 129 [2022-11-20 11:01:11,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:01:11,790 INFO L225 Difference]: With dead ends: 500 [2022-11-20 11:01:11,790 INFO L226 Difference]: Without dead ends: 268 [2022-11-20 11:01:11,791 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:01:11,792 INFO L413 NwaCegarLoop]: 233 mSDtfsCounter, 26 mSDsluCounter, 424 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 657 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:01:11,792 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 657 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:01:11,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2022-11-20 11:01:11,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 244. [2022-11-20 11:01:11,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 164 states have (on average 1.1341463414634145) internal successors, (186), 167 states have internal predecessors, (186), 58 states have call successors, (58), 20 states have call predecessors, (58), 21 states have return successors, (64), 56 states have call predecessors, (64), 57 states have call successors, (64) [2022-11-20 11:01:11,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 308 transitions. [2022-11-20 11:01:11,814 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 308 transitions. Word has length 129 [2022-11-20 11:01:11,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:01:11,815 INFO L495 AbstractCegarLoop]: Abstraction has 244 states and 308 transitions. [2022-11-20 11:01:11,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-20 11:01:11,815 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 308 transitions. [2022-11-20 11:01:11,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-11-20 11:01:11,817 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:01:11,817 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-20 11:01:11,832 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2e4569-a56e-416a-a5f9-0e148068e73f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-20 11:01:12,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2e4569-a56e-416a-a5f9-0e148068e73f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-20 11:01:12,027 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:01:12,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:01:12,027 INFO L85 PathProgramCache]: Analyzing trace with hash 363482487, now seen corresponding path program 1 times [2022-11-20 11:01:12,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:01:12,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552807000] [2022-11-20 11:01:12,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:01:12,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:01:12,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:12,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 11:01:12,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:12,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-20 11:01:12,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:12,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 11:01:12,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:12,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:01:12,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:12,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-20 11:01:12,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:12,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-20 11:01:12,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:12,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-20 11:01:12,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:12,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:01:12,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:12,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-20 11:01:12,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:12,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-20 11:01:12,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:12,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-20 11:01:12,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:12,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-20 11:01:12,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:12,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-11-20 11:01:12,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:12,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-20 11:01:12,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:12,961 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2022-11-20 11:01:12,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:01:12,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552807000] [2022-11-20 11:01:12,962 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552807000] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:01:12,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1762090723] [2022-11-20 11:01:12,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:01:12,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:01:12,963 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2e4569-a56e-416a-a5f9-0e148068e73f/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:01:12,964 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2e4569-a56e-416a-a5f9-0e148068e73f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:01:12,982 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2e4569-a56e-416a-a5f9-0e148068e73f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-20 11:01:13,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:13,563 INFO L263 TraceCheckSpWp]: Trace formula consists of 2735 conjuncts, 49 conjunts are in the unsatisfiable core [2022-11-20 11:01:13,569 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:01:13,760 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-20 11:01:13,765 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 11:01:14,972 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 18 treesize of output 10 [2022-11-20 11:01:14,976 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 16 treesize of output 8 [2022-11-20 11:01:15,046 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 81 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-20 11:01:15,047 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:01:15,587 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 26 treesize of output 22 [2022-11-20 11:01:15,596 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2022-11-20 11:01:15,614 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 32 treesize of output 26 [2022-11-20 11:01:15,813 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2022-11-20 11:01:15,813 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1762090723] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:01:15,813 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:01:15,814 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 14, 12] total 31 [2022-11-20 11:01:15,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112459792] [2022-11-20 11:01:15,814 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:01:15,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-11-20 11:01:15,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:01:15,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-11-20 11:01:15,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=814, Unknown=0, NotChecked=0, Total=930 [2022-11-20 11:01:15,816 INFO L87 Difference]: Start difference. First operand 244 states and 308 transitions. Second operand has 31 states, 31 states have (on average 5.258064516129032) internal successors, (163), 26 states have internal predecessors, (163), 12 states have call successors, (39), 7 states have call predecessors, (39), 9 states have return successors, (38), 12 states have call predecessors, (38), 12 states have call successors, (38) [2022-11-20 11:01:22,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:01:22,169 INFO L93 Difference]: Finished difference Result 746 states and 963 transitions. [2022-11-20 11:01:22,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-11-20 11:01:22,170 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 5.258064516129032) internal successors, (163), 26 states have internal predecessors, (163), 12 states have call successors, (39), 7 states have call predecessors, (39), 9 states have return successors, (38), 12 states have call predecessors, (38), 12 states have call successors, (38) Word has length 129 [2022-11-20 11:01:22,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:01:22,174 INFO L225 Difference]: With dead ends: 746 [2022-11-20 11:01:22,174 INFO L226 Difference]: Without dead ends: 573 [2022-11-20 11:01:22,177 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 324 GetRequests, 264 SyntacticMatches, 5 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 771 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=351, Invalid=2841, Unknown=0, NotChecked=0, Total=3192 [2022-11-20 11:01:22,178 INFO L413 NwaCegarLoop]: 172 mSDtfsCounter, 698 mSDsluCounter, 1574 mSDsCounter, 0 mSdLazyCounter, 4524 mSolverCounterSat, 538 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 727 SdHoareTripleChecker+Valid, 1746 SdHoareTripleChecker+Invalid, 6362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 538 IncrementalHoareTripleChecker+Valid, 4524 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1300 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:01:22,178 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [727 Valid, 1746 Invalid, 6362 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [538 Valid, 4524 Invalid, 0 Unknown, 1300 Unchecked, 5.1s Time] [2022-11-20 11:01:22,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 573 states. [2022-11-20 11:01:22,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 573 to 460. [2022-11-20 11:01:22,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 460 states, 309 states have (on average 1.110032362459547) internal successors, (343), 316 states have internal predecessors, (343), 103 states have call successors, (103), 42 states have call predecessors, (103), 47 states have return successors, (128), 101 states have call predecessors, (128), 101 states have call successors, (128) [2022-11-20 11:01:22,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 574 transitions. [2022-11-20 11:01:22,235 INFO L78 Accepts]: Start accepts. Automaton has 460 states and 574 transitions. Word has length 129 [2022-11-20 11:01:22,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:01:22,236 INFO L495 AbstractCegarLoop]: Abstraction has 460 states and 574 transitions. [2022-11-20 11:01:22,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 5.258064516129032) internal successors, (163), 26 states have internal predecessors, (163), 12 states have call successors, (39), 7 states have call predecessors, (39), 9 states have return successors, (38), 12 states have call predecessors, (38), 12 states have call successors, (38) [2022-11-20 11:01:22,236 INFO L276 IsEmpty]: Start isEmpty. Operand 460 states and 574 transitions. [2022-11-20 11:01:22,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-11-20 11:01:22,239 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:01:22,239 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:01:22,254 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2e4569-a56e-416a-a5f9-0e148068e73f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-20 11:01:22,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2e4569-a56e-416a-a5f9-0e148068e73f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-20 11:01:22,454 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:01:22,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:01:22,455 INFO L85 PathProgramCache]: Analyzing trace with hash -1623462869, now seen corresponding path program 1 times [2022-11-20 11:01:22,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:01:22,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860311509] [2022-11-20 11:01:22,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:01:22,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:01:22,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:23,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 11:01:23,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:23,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-20 11:01:23,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:23,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 11:01:23,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:23,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:01:23,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:23,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-20 11:01:23,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:23,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-20 11:01:23,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:23,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-20 11:01:23,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:23,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:01:23,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:23,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-20 11:01:23,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:23,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-20 11:01:23,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:23,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-20 11:01:23,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:23,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-20 11:01:23,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:23,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-11-20 11:01:23,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:23,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-11-20 11:01:23,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:23,467 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2022-11-20 11:01:23,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:01:23,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860311509] [2022-11-20 11:01:23,470 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860311509] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:01:23,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [303327648] [2022-11-20 11:01:23,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:01:23,471 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:01:23,471 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2e4569-a56e-416a-a5f9-0e148068e73f/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:01:23,472 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2e4569-a56e-416a-a5f9-0e148068e73f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:01:23,494 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2e4569-a56e-416a-a5f9-0e148068e73f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-20 11:01:24,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:24,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 2747 conjuncts, 35 conjunts are in the unsatisfiable core [2022-11-20 11:01:24,153 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:01:24,277 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 11:01:25,058 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 16 treesize of output 8 [2022-11-20 11:01:25,078 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 65 proven. 2 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-11-20 11:01:25,079 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:01:25,222 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 32 treesize of output 26 [2022-11-20 11:01:25,327 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2022-11-20 11:01:25,327 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [303327648] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:01:25,327 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:01:25,327 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 8] total 21 [2022-11-20 11:01:25,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049772491] [2022-11-20 11:01:25,327 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:01:25,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-20 11:01:25,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:01:25,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-20 11:01:25,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=367, Unknown=0, NotChecked=0, Total=420 [2022-11-20 11:01:25,329 INFO L87 Difference]: Start difference. First operand 460 states and 574 transitions. Second operand has 21 states, 21 states have (on average 6.142857142857143) internal successors, (129), 17 states have internal predecessors, (129), 10 states have call successors, (37), 5 states have call predecessors, (37), 5 states have return successors, (36), 12 states have call predecessors, (36), 10 states have call successors, (36) [2022-11-20 11:01:28,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:01:28,324 INFO L93 Difference]: Finished difference Result 769 states and 991 transitions. [2022-11-20 11:01:28,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-20 11:01:28,325 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 6.142857142857143) internal successors, (129), 17 states have internal predecessors, (129), 10 states have call successors, (37), 5 states have call predecessors, (37), 5 states have return successors, (36), 12 states have call predecessors, (36), 10 states have call successors, (36) Word has length 128 [2022-11-20 11:01:28,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:01:28,329 INFO L225 Difference]: With dead ends: 769 [2022-11-20 11:01:28,329 INFO L226 Difference]: Without dead ends: 589 [2022-11-20 11:01:28,330 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 259 SyntacticMatches, 13 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=126, Invalid=996, Unknown=0, NotChecked=0, Total=1122 [2022-11-20 11:01:28,331 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 229 mSDsluCounter, 1395 mSDsCounter, 0 mSdLazyCounter, 2659 mSolverCounterSat, 169 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 1536 SdHoareTripleChecker+Invalid, 3092 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 169 IncrementalHoareTripleChecker+Valid, 2659 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 264 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-20 11:01:28,331 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [258 Valid, 1536 Invalid, 3092 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [169 Valid, 2659 Invalid, 0 Unknown, 264 Unchecked, 2.5s Time] [2022-11-20 11:01:28,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 589 states. [2022-11-20 11:01:28,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 589 to 470. [2022-11-20 11:01:28,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 470 states, 319 states have (on average 1.1065830721003134) internal successors, (353), 324 states have internal predecessors, (353), 103 states have call successors, (103), 42 states have call predecessors, (103), 47 states have return successors, (128), 103 states have call predecessors, (128), 101 states have call successors, (128) [2022-11-20 11:01:28,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 470 states to 470 states and 584 transitions. [2022-11-20 11:01:28,375 INFO L78 Accepts]: Start accepts. Automaton has 470 states and 584 transitions. Word has length 128 [2022-11-20 11:01:28,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:01:28,375 INFO L495 AbstractCegarLoop]: Abstraction has 470 states and 584 transitions. [2022-11-20 11:01:28,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 6.142857142857143) internal successors, (129), 17 states have internal predecessors, (129), 10 states have call successors, (37), 5 states have call predecessors, (37), 5 states have return successors, (36), 12 states have call predecessors, (36), 10 states have call successors, (36) [2022-11-20 11:01:28,376 INFO L276 IsEmpty]: Start isEmpty. Operand 470 states and 584 transitions. [2022-11-20 11:01:28,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-11-20 11:01:28,378 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:01:28,378 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-20 11:01:28,397 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2e4569-a56e-416a-a5f9-0e148068e73f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-20 11:01:28,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2e4569-a56e-416a-a5f9-0e148068e73f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-20 11:01:28,598 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:01:28,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:01:28,598 INFO L85 PathProgramCache]: Analyzing trace with hash 1460043151, now seen corresponding path program 1 times [2022-11-20 11:01:28,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:01:28,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854461572] [2022-11-20 11:01:28,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:01:28,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:01:28,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:29,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 11:01:29,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:29,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-20 11:01:29,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:29,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 11:01:29,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:29,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:01:29,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:29,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-20 11:01:29,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:29,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-20 11:01:29,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:29,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-20 11:01:29,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:29,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:01:29,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:29,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-20 11:01:29,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:29,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-20 11:01:29,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:29,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-20 11:01:29,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:29,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-20 11:01:29,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:29,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-20 11:01:29,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:29,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-11-20 11:01:29,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:29,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-11-20 11:01:29,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:29,701 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2022-11-20 11:01:29,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:01:29,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854461572] [2022-11-20 11:01:29,702 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854461572] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:01:29,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [596972898] [2022-11-20 11:01:29,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:01:29,703 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:01:29,703 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2e4569-a56e-416a-a5f9-0e148068e73f/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:01:29,704 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2e4569-a56e-416a-a5f9-0e148068e73f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:01:29,711 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2e4569-a56e-416a-a5f9-0e148068e73f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-20 11:01:30,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:30,400 INFO L263 TraceCheckSpWp]: Trace formula consists of 2804 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-20 11:01:30,405 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:01:31,104 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 17 treesize of output 9 [2022-11-20 11:01:31,138 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-11-20 11:01:31,138 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:01:31,138 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [596972898] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:01:31,138 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:01:31,139 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 18 [2022-11-20 11:01:31,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963268884] [2022-11-20 11:01:31,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:01:31,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 11:01:31,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:01:31,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 11:01:31,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2022-11-20 11:01:31,140 INFO L87 Difference]: Start difference. First operand 470 states and 584 transitions. Second operand has 10 states, 10 states have (on average 7.7) internal successors, (77), 10 states have internal predecessors, (77), 5 states have call successors, (16), 3 states have call predecessors, (16), 4 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) [2022-11-20 11:01:31,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:01:31,941 INFO L93 Difference]: Finished difference Result 741 states and 945 transitions. [2022-11-20 11:01:31,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-20 11:01:31,942 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.7) internal successors, (77), 10 states have internal predecessors, (77), 5 states have call successors, (16), 3 states have call predecessors, (16), 4 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) Word has length 132 [2022-11-20 11:01:31,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:01:31,946 INFO L225 Difference]: With dead ends: 741 [2022-11-20 11:01:31,946 INFO L226 Difference]: Without dead ends: 561 [2022-11-20 11:01:31,947 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 147 SyntacticMatches, 5 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=70, Invalid=482, Unknown=0, NotChecked=0, Total=552 [2022-11-20 11:01:31,948 INFO L413 NwaCegarLoop]: 266 mSDtfsCounter, 146 mSDsluCounter, 1525 mSDsCounter, 0 mSdLazyCounter, 331 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 1791 SdHoareTripleChecker+Invalid, 445 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 331 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 68 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-20 11:01:31,948 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [180 Valid, 1791 Invalid, 445 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 331 Invalid, 0 Unknown, 68 Unchecked, 0.6s Time] [2022-11-20 11:01:31,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 561 states. [2022-11-20 11:01:31,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 561 to 499. [2022-11-20 11:01:31,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 499 states, 340 states have (on average 1.1) internal successors, (374), 345 states have internal predecessors, (374), 107 states have call successors, (107), 45 states have call predecessors, (107), 51 states have return successors, (135), 108 states have call predecessors, (135), 105 states have call successors, (135) [2022-11-20 11:01:31,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 499 states to 499 states and 616 transitions. [2022-11-20 11:01:31,997 INFO L78 Accepts]: Start accepts. Automaton has 499 states and 616 transitions. Word has length 132 [2022-11-20 11:01:31,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:01:31,998 INFO L495 AbstractCegarLoop]: Abstraction has 499 states and 616 transitions. [2022-11-20 11:01:31,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.7) internal successors, (77), 10 states have internal predecessors, (77), 5 states have call successors, (16), 3 states have call predecessors, (16), 4 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) [2022-11-20 11:01:31,998 INFO L276 IsEmpty]: Start isEmpty. Operand 499 states and 616 transitions. [2022-11-20 11:01:32,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-11-20 11:01:32,001 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:01:32,001 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:01:32,016 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2e4569-a56e-416a-a5f9-0e148068e73f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-20 11:01:32,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2e4569-a56e-416a-a5f9-0e148068e73f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-20 11:01:32,211 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:01:32,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:01:32,212 INFO L85 PathProgramCache]: Analyzing trace with hash -937427379, now seen corresponding path program 1 times [2022-11-20 11:01:32,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:01:32,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575247711] [2022-11-20 11:01:32,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:01:32,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:01:32,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:32,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 11:01:32,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:32,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-20 11:01:32,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:32,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 11:01:32,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:32,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:01:32,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:32,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-20 11:01:32,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:32,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-20 11:01:32,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:32,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-20 11:01:32,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:32,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:01:32,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:32,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-20 11:01:32,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:32,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-20 11:01:32,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:32,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-20 11:01:32,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:33,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-20 11:01:33,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:33,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-20 11:01:33,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:33,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-11-20 11:01:33,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:33,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-11-20 11:01:33,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:33,311 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2022-11-20 11:01:33,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:01:33,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575247711] [2022-11-20 11:01:33,312 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575247711] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:01:33,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [727788796] [2022-11-20 11:01:33,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:01:33,312 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:01:33,312 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2e4569-a56e-416a-a5f9-0e148068e73f/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:01:33,314 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2e4569-a56e-416a-a5f9-0e148068e73f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:01:33,340 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2e4569-a56e-416a-a5f9-0e148068e73f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-20 11:01:34,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:34,027 INFO L263 TraceCheckSpWp]: Trace formula consists of 2799 conjuncts, 67 conjunts are in the unsatisfiable core [2022-11-20 11:01:34,037 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:01:34,046 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 [2022-11-20 11:01:34,300 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-20 11:01:34,300 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 [2022-11-20 11:01:34,905 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-20 11:01:37,118 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((|bounded_malloc_#res.base| Int) (v_ArrVal_1656 Int)) (and (= |c_#valid| (store |c_old(#valid)| |bounded_malloc_#res.base| v_ArrVal_1656)) (< |bounded_malloc_#res.base| |c_#StackHeapBarrier|))) (exists ((|v_ULTIMATE.start_aws_byte_buf_init_copy_harness_~#src~0#1.base_BEFORE_CALL_59| Int)) (not (= 0 (mod (select (select |c_#memory_int| |v_ULTIMATE.start_aws_byte_buf_init_copy_harness_~#src~0#1.base_BEFORE_CALL_59|) 0) 18446744073709551616))))) is different from true [2022-11-20 11:01:37,154 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-20 11:01:37,155 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 1 case distinctions, treesize of input 12 treesize of output 18 [2022-11-20 11:01:39,579 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-20 11:01:39,579 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-11-20 11:01:39,653 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 17 treesize of output 19 [2022-11-20 11:01:41,826 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 17 treesize of output 19 [2022-11-20 11:01:48,836 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 53 proven. 47 refuted. 0 times theorem prover too weak. 34 trivial. 2 not checked. [2022-11-20 11:01:48,837 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:01:51,399 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [727788796] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:01:51,400 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:01:51,400 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 24] total 32 [2022-11-20 11:01:51,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896487324] [2022-11-20 11:01:51,400 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:01:51,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-20 11:01:51,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:01:51,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-20 11:01:51,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=1265, Unknown=17, NotChecked=72, Total=1482 [2022-11-20 11:01:51,403 INFO L87 Difference]: Start difference. First operand 499 states and 616 transitions. Second operand has 32 states, 31 states have (on average 4.419354838709677) internal successors, (137), 30 states have internal predecessors, (137), 9 states have call successors, (30), 10 states have call predecessors, (30), 11 states have return successors, (29), 9 states have call predecessors, (29), 9 states have call successors, (29) [2022-11-20 11:01:58,232 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((|bounded_malloc_#res.base| Int) (v_ArrVal_1656 Int)) (and (= |c_#valid| (store |c_old(#valid)| |bounded_malloc_#res.base| v_ArrVal_1656)) (< |bounded_malloc_#res.base| |c_#StackHeapBarrier|))) (exists ((|bounded_malloc_#res.base| Int)) (and (exists ((v_ArrVal_1655 Int)) (= |c_#valid| (store |c_old(#valid)| |bounded_malloc_#res.base| v_ArrVal_1655))) (= (select |c_old(#valid)| |bounded_malloc_#res.base|) 0))) (exists ((|v_ULTIMATE.start_aws_byte_buf_init_copy_harness_~#src~0#1.base_BEFORE_CALL_59| Int)) (not (= 0 (mod (select (select |c_#memory_int| |v_ULTIMATE.start_aws_byte_buf_init_copy_harness_~#src~0#1.base_BEFORE_CALL_59|) 0) 18446744073709551616))))) is different from true [2022-11-20 11:02:02,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:02:02,073 INFO L93 Difference]: Finished difference Result 858 states and 1062 transitions. [2022-11-20 11:02:02,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-11-20 11:02:02,074 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 4.419354838709677) internal successors, (137), 30 states have internal predecessors, (137), 9 states have call successors, (30), 10 states have call predecessors, (30), 11 states have return successors, (29), 9 states have call predecessors, (29), 9 states have call successors, (29) Word has length 132 [2022-11-20 11:02:02,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:02:02,078 INFO L225 Difference]: With dead ends: 858 [2022-11-20 11:02:02,079 INFO L226 Difference]: Without dead ends: 616 [2022-11-20 11:02:02,081 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 185 SyntacticMatches, 13 SemanticMatches, 54 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 735 ImplicationChecksByTransitivity, 25.5s TimeCoverageRelationStatistics Valid=252, Invalid=2594, Unknown=24, NotChecked=210, Total=3080 [2022-11-20 11:02:02,082 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 104 mSDsluCounter, 1701 mSDsCounter, 0 mSdLazyCounter, 1249 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 1840 SdHoareTripleChecker+Invalid, 3061 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 1249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1745 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-20 11:02:02,082 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 1840 Invalid, 3061 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 1249 Invalid, 0 Unknown, 1745 Unchecked, 1.5s Time] [2022-11-20 11:02:02,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 616 states. [2022-11-20 11:02:02,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 616 to 575. [2022-11-20 11:02:02,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 575 states, 394 states have (on average 1.098984771573604) internal successors, (433), 400 states have internal predecessors, (433), 120 states have call successors, (120), 55 states have call predecessors, (120), 60 states have return successors, (154), 119 states have call predecessors, (154), 118 states have call successors, (154) [2022-11-20 11:02:02,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 575 states to 575 states and 707 transitions. [2022-11-20 11:02:02,141 INFO L78 Accepts]: Start accepts. Automaton has 575 states and 707 transitions. Word has length 132 [2022-11-20 11:02:02,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:02:02,141 INFO L495 AbstractCegarLoop]: Abstraction has 575 states and 707 transitions. [2022-11-20 11:02:02,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 4.419354838709677) internal successors, (137), 30 states have internal predecessors, (137), 9 states have call successors, (30), 10 states have call predecessors, (30), 11 states have return successors, (29), 9 states have call predecessors, (29), 9 states have call successors, (29) [2022-11-20 11:02:02,142 INFO L276 IsEmpty]: Start isEmpty. Operand 575 states and 707 transitions. [2022-11-20 11:02:02,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-11-20 11:02:02,145 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:02:02,145 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 5, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:02:02,164 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2e4569-a56e-416a-a5f9-0e148068e73f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-20 11:02:02,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2e4569-a56e-416a-a5f9-0e148068e73f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:02:02,359 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:02:02,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:02:02,359 INFO L85 PathProgramCache]: Analyzing trace with hash -55657484, now seen corresponding path program 1 times [2022-11-20 11:02:02,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:02:02,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484375426] [2022-11-20 11:02:02,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:02:02,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:02:02,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:02:03,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 11:02:03,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:02:03,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-20 11:02:03,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:02:03,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 11:02:03,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:02:03,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-20 11:02:03,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:02:03,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:02:03,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:02:03,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-20 11:02:03,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:02:03,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-20 11:02:03,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:02:03,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-20 11:02:03,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:02:03,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:02:03,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:02:03,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-20 11:02:03,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:02:03,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-20 11:02:03,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:02:03,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-20 11:02:03,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:02:03,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-20 11:02:03,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:02:03,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-11-20 11:02:03,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:02:03,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-11-20 11:02:03,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:02:03,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-11-20 11:02:03,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:02:03,564 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2022-11-20 11:02:03,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:02:03,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484375426] [2022-11-20 11:02:03,565 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484375426] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:02:03,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2132546265] [2022-11-20 11:02:03,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:02:03,565 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:02:03,566 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2e4569-a56e-416a-a5f9-0e148068e73f/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:02:03,567 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2e4569-a56e-416a-a5f9-0e148068e73f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:02:03,598 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2e4569-a56e-416a-a5f9-0e148068e73f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-20 11:02:04,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:02:04,350 INFO L263 TraceCheckSpWp]: Trace formula consists of 2831 conjuncts, 65 conjunts are in the unsatisfiable core [2022-11-20 11:02:04,357 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:02:04,362 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 [2022-11-20 11:02:04,823 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-20 11:02:04,823 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-20 11:02:04,892 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 11:02:05,398 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-20 11:02:11,609 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((|bounded_malloc_#res.base| Int)) (= |c_#valid| (store |c_old(#valid)| |bounded_malloc_#res.base| 1))) (exists ((|v_ULTIMATE.start_aws_byte_buf_init_copy_harness_~#src~0#1.base_BEFORE_CALL_68| Int)) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_byte_buf_init_copy_harness_~#src~0#1.base_BEFORE_CALL_68|) 8))) (and (not (= .cse0 0)) (not (= |v_ULTIMATE.start_aws_byte_buf_init_copy_harness_~#src~0#1.base_BEFORE_CALL_68| .cse0)))))) is different from true [2022-11-20 11:02:11,657 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-20 11:02:11,657 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 1 case distinctions, treesize of input 12 treesize of output 14 [2022-11-20 11:02:11,882 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-20 11:02:11,882 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-20 11:02:11,940 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 27 treesize of output 27 [2022-11-20 11:02:16,144 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 27 treesize of output 27 [2022-11-20 11:02:31,183 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 56 proven. 47 refuted. 0 times theorem prover too weak. 39 trivial. 2 not checked. [2022-11-20 11:02:31,184 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:02:31,591 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1885 (Array Int Int))) (not (= (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_save_byte_from_array_~storage#1.base| v_ArrVal_1885) |c_ULTIMATE.start_aws_byte_buf_init_copy_harness_~#src~0#1.base|) (+ |c_ULTIMATE.start_aws_byte_buf_init_copy_harness_~#src~0#1.offset| 8)) 0))) is different from false [2022-11-20 11:02:31,599 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2132546265] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:02:31,599 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:02:31,599 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 20] total 29 [2022-11-20 11:02:31,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094114455] [2022-11-20 11:02:31,600 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:02:31,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-20 11:02:31,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:02:31,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-20 11:02:31,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=1012, Unknown=5, NotChecked=130, Total=1260 [2022-11-20 11:02:31,602 INFO L87 Difference]: Start difference. First operand 575 states and 707 transitions. Second operand has 29 states, 28 states have (on average 5.071428571428571) internal successors, (142), 26 states have internal predecessors, (142), 9 states have call successors, (32), 9 states have call predecessors, (32), 9 states have return successors, (31), 10 states have call predecessors, (31), 9 states have call successors, (31) [2022-11-20 11:02:48,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:02:48,159 INFO L93 Difference]: Finished difference Result 912 states and 1118 transitions. [2022-11-20 11:02:48,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-20 11:02:48,160 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 5.071428571428571) internal successors, (142), 26 states have internal predecessors, (142), 9 states have call successors, (32), 9 states have call predecessors, (32), 9 states have return successors, (31), 10 states have call predecessors, (31), 9 states have call successors, (31) Word has length 138 [2022-11-20 11:02:48,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:02:48,164 INFO L225 Difference]: With dead ends: 912 [2022-11-20 11:02:48,164 INFO L226 Difference]: Without dead ends: 669 [2022-11-20 11:02:48,168 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 191 SyntacticMatches, 19 SemanticMatches, 53 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 670 ImplicationChecksByTransitivity, 41.4s TimeCoverageRelationStatistics Valid=278, Invalid=2476, Unknown=10, NotChecked=206, Total=2970 [2022-11-20 11:02:48,169 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 257 mSDsluCounter, 1086 mSDsCounter, 0 mSdLazyCounter, 906 mSolverCounterSat, 186 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 1224 SdHoareTripleChecker+Invalid, 2094 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 186 IncrementalHoareTripleChecker+Valid, 906 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1002 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:02:48,169 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [258 Valid, 1224 Invalid, 2094 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [186 Valid, 906 Invalid, 0 Unknown, 1002 Unchecked, 1.2s Time] [2022-11-20 11:02:48,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 669 states. [2022-11-20 11:02:48,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 669 to 615. [2022-11-20 11:02:48,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 615 states, 424 states have (on average 1.096698113207547) internal successors, (465), 430 states have internal predecessors, (465), 124 states have call successors, (124), 60 states have call predecessors, (124), 66 states have return successors, (159), 124 states have call predecessors, (159), 122 states have call successors, (159) [2022-11-20 11:02:48,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 615 states to 615 states and 748 transitions. [2022-11-20 11:02:48,241 INFO L78 Accepts]: Start accepts. Automaton has 615 states and 748 transitions. Word has length 138 [2022-11-20 11:02:48,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:02:48,242 INFO L495 AbstractCegarLoop]: Abstraction has 615 states and 748 transitions. [2022-11-20 11:02:48,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 5.071428571428571) internal successors, (142), 26 states have internal predecessors, (142), 9 states have call successors, (32), 9 states have call predecessors, (32), 9 states have return successors, (31), 10 states have call predecessors, (31), 9 states have call successors, (31) [2022-11-20 11:02:48,243 INFO L276 IsEmpty]: Start isEmpty. Operand 615 states and 748 transitions. [2022-11-20 11:02:48,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-11-20 11:02:48,246 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:02:48,247 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:02:48,265 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2e4569-a56e-416a-a5f9-0e148068e73f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-11-20 11:02:48,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2e4569-a56e-416a-a5f9-0e148068e73f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-20 11:02:48,459 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:02:48,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:02:48,460 INFO L85 PathProgramCache]: Analyzing trace with hash -1470728215, now seen corresponding path program 1 times [2022-11-20 11:02:48,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:02:48,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895388397] [2022-11-20 11:02:48,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:02:48,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:02:48,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:02:49,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 11:02:49,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:02:49,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-20 11:02:49,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:02:49,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 11:02:49,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:02:49,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:02:49,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:02:49,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-20 11:02:49,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:02:49,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-20 11:02:49,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:02:49,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-20 11:02:49,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:02:49,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:02:49,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:02:49,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-20 11:02:49,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:02:49,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-20 11:02:49,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:02:49,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-20 11:02:49,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:02:49,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-20 11:02:49,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:02:49,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-20 11:02:49,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:02:49,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-11-20 11:02:49,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:02:49,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-11-20 11:02:49,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:02:49,818 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2022-11-20 11:02:49,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:02:49,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895388397] [2022-11-20 11:02:49,819 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895388397] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:02:49,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [742409887] [2022-11-20 11:02:49,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:02:49,820 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:02:49,820 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2e4569-a56e-416a-a5f9-0e148068e73f/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:02:49,823 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2e4569-a56e-416a-a5f9-0e148068e73f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:02:49,837 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2e4569-a56e-416a-a5f9-0e148068e73f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-20 11:02:50,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:02:50,709 INFO L263 TraceCheckSpWp]: Trace formula consists of 2839 conjuncts, 65 conjunts are in the unsatisfiable core [2022-11-20 11:02:50,716 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:02:50,722 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 [2022-11-20 11:02:51,082 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-20 11:02:51,082 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 1 case distinctions, treesize of input 12 treesize of output 14 [2022-11-20 11:02:51,142 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 11:02:51,675 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-20 11:02:51,675 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 7 [2022-11-20 11:02:53,855 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((|v_ULTIMATE.start_aws_byte_buf_init_copy_harness_~#src~0#1.base_BEFORE_CALL_76| Int)) (not (= (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_byte_buf_init_copy_harness_~#src~0#1.base_BEFORE_CALL_76|) 8) 0))) (exists ((|bounded_malloc_#res.base| Int) (v_ArrVal_2134 Int)) (and (= |c_#valid| (store |c_old(#valid)| |bounded_malloc_#res.base| v_ArrVal_2134)) (< |bounded_malloc_#res.base| |c_#StackHeapBarrier|)))) is different from true [2022-11-20 11:02:53,921 INFO L321 Elim1Store]: treesize reduction 46, result has 40.3 percent of original size [2022-11-20 11:02:53,922 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 23 treesize of output 42 [2022-11-20 11:02:54,695 INFO L321 Elim1Store]: treesize reduction 8, result has 78.4 percent of original size [2022-11-20 11:02:54,695 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 59 treesize of output 67 [2022-11-20 11:02:54,795 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 27 treesize of output 27 [2022-11-20 11:02:56,969 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 27 treesize of output 27 [2022-11-20 11:03:03,871 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 53 proven. 47 refuted. 0 times theorem prover too weak. 45 trivial. 2 not checked. [2022-11-20 11:03:03,871 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:03:06,404 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [742409887] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:03:06,404 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:03:06,404 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 22] total 32 [2022-11-20 11:03:06,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16031614] [2022-11-20 11:03:06,404 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:03:06,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-20 11:03:06,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:03:06,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-20 11:03:06,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=1265, Unknown=14, NotChecked=72, Total=1482 [2022-11-20 11:03:06,407 INFO L87 Difference]: Start difference. First operand 615 states and 748 transitions. Second operand has 32 states, 31 states have (on average 4.548387096774194) internal successors, (141), 29 states have internal predecessors, (141), 10 states have call successors, (30), 10 states have call predecessors, (30), 10 states have return successors, (29), 11 states have call predecessors, (29), 10 states have call successors, (29) [2022-11-20 11:03:13,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:03:13,714 INFO L93 Difference]: Finished difference Result 1186 states and 1441 transitions. [2022-11-20 11:03:13,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-11-20 11:03:13,715 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 4.548387096774194) internal successors, (141), 29 states have internal predecessors, (141), 10 states have call successors, (30), 10 states have call predecessors, (30), 10 states have return successors, (29), 11 states have call predecessors, (29), 10 states have call successors, (29) Word has length 134 [2022-11-20 11:03:13,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:03:13,721 INFO L225 Difference]: With dead ends: 1186 [2022-11-20 11:03:13,721 INFO L226 Difference]: Without dead ends: 866 [2022-11-20 11:03:13,724 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 195 SyntacticMatches, 14 SemanticMatches, 58 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 879 ImplicationChecksByTransitivity, 19.8s TimeCoverageRelationStatistics Valid=306, Invalid=3105, Unknown=15, NotChecked=114, Total=3540 [2022-11-20 11:03:13,725 INFO L413 NwaCegarLoop]: 133 mSDtfsCounter, 224 mSDsluCounter, 1259 mSDsCounter, 0 mSdLazyCounter, 1348 mSolverCounterSat, 164 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 1392 SdHoareTripleChecker+Invalid, 3213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 164 IncrementalHoareTripleChecker+Valid, 1348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1701 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-20 11:03:13,725 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [226 Valid, 1392 Invalid, 3213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [164 Valid, 1348 Invalid, 0 Unknown, 1701 Unchecked, 1.9s Time] [2022-11-20 11:03:13,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 866 states. [2022-11-20 11:03:13,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 866 to 714. [2022-11-20 11:03:13,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 714 states, 491 states have (on average 1.0916496945010183) internal successors, (536), 497 states have internal predecessors, (536), 142 states have call successors, (142), 73 states have call predecessors, (142), 80 states have return successors, (176), 143 states have call predecessors, (176), 140 states have call successors, (176) [2022-11-20 11:03:13,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 714 states to 714 states and 854 transitions. [2022-11-20 11:03:13,857 INFO L78 Accepts]: Start accepts. Automaton has 714 states and 854 transitions. Word has length 134 [2022-11-20 11:03:13,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:03:13,857 INFO L495 AbstractCegarLoop]: Abstraction has 714 states and 854 transitions. [2022-11-20 11:03:13,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 4.548387096774194) internal successors, (141), 29 states have internal predecessors, (141), 10 states have call successors, (30), 10 states have call predecessors, (30), 10 states have return successors, (29), 11 states have call predecessors, (29), 10 states have call successors, (29) [2022-11-20 11:03:13,858 INFO L276 IsEmpty]: Start isEmpty. Operand 714 states and 854 transitions. [2022-11-20 11:03:13,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-11-20 11:03:13,861 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:03:13,861 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:03:13,873 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2e4569-a56e-416a-a5f9-0e148068e73f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2022-11-20 11:03:14,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2e4569-a56e-416a-a5f9-0e148068e73f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:03:14,074 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:03:14,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:03:14,074 INFO L85 PathProgramCache]: Analyzing trace with hash 1959242456, now seen corresponding path program 1 times [2022-11-20 11:03:14,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:03:14,075 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842624373] [2022-11-20 11:03:14,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:03:14,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:03:14,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:15,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 11:03:15,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:15,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-20 11:03:15,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:15,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 11:03:15,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:15,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-20 11:03:15,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:15,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:03:15,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:15,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-20 11:03:15,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:15,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-20 11:03:15,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:15,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-20 11:03:15,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:15,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:03:15,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:15,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-20 11:03:15,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:15,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-20 11:03:15,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:15,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-20 11:03:15,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:15,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-20 11:03:15,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:15,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-11-20 11:03:15,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:15,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-11-20 11:03:15,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:15,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-11-20 11:03:15,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:15,667 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2022-11-20 11:03:15,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:03:15,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842624373] [2022-11-20 11:03:15,668 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842624373] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:03:15,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1930406247] [2022-11-20 11:03:15,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:03:15,669 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:03:15,669 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2e4569-a56e-416a-a5f9-0e148068e73f/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:03:15,670 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2e4569-a56e-416a-a5f9-0e148068e73f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:03:15,694 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2e4569-a56e-416a-a5f9-0e148068e73f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-11-20 11:03:16,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:16,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 2871 conjuncts, 56 conjunts are in the unsatisfiable core [2022-11-20 11:03:16,519 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:03:16,525 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 [2022-11-20 11:03:17,038 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-20 11:03:17,041 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 1 case distinctions, treesize of input 12 treesize of output 14 [2022-11-20 11:03:17,111 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 11:03:17,684 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-20 11:03:17,685 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 7 [2022-11-20 11:03:19,880 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_2409 Int) (|bounded_malloc_#res.base| Int)) (and (= |c_#valid| (store |c_old(#valid)| |bounded_malloc_#res.base| v_ArrVal_2409)) (< |bounded_malloc_#res.base| |c_#StackHeapBarrier|))) (exists ((|v_ULTIMATE.start_aws_byte_buf_init_copy_harness_~#src~0#1.base_BEFORE_CALL_85| Int)) (not (= (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_byte_buf_init_copy_harness_~#src~0#1.base_BEFORE_CALL_85|) 8) 0)))) is different from true [2022-11-20 11:03:19,940 INFO L321 Elim1Store]: treesize reduction 46, result has 40.3 percent of original size [2022-11-20 11:03:19,941 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 23 treesize of output 42 [2022-11-20 11:03:20,644 INFO L321 Elim1Store]: treesize reduction 8, result has 78.4 percent of original size [2022-11-20 11:03:20,645 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 59 treesize of output 67 [2022-11-20 11:03:20,754 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 27 treesize of output 27 [2022-11-20 11:03:22,947 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 27 treesize of output 27 [2022-11-20 11:03:29,546 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 16 treesize of output 8 [2022-11-20 11:03:29,582 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 53 proven. 50 refuted. 0 times theorem prover too weak. 52 trivial. 2 not checked. [2022-11-20 11:03:29,582 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:03:29,813 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1930406247] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:03:29,813 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:03:29,813 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 19] total 30 [2022-11-20 11:03:29,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163680090] [2022-11-20 11:03:29,814 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:03:29,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-11-20 11:03:29,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:03:29,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-11-20 11:03:29,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=880, Unknown=12, NotChecked=60, Total=1056 [2022-11-20 11:03:29,816 INFO L87 Difference]: Start difference. First operand 714 states and 854 transitions. Second operand has 30 states, 30 states have (on average 4.866666666666666) internal successors, (146), 27 states have internal predecessors, (146), 10 states have call successors, (32), 10 states have call predecessors, (32), 9 states have return successors, (31), 11 states have call predecessors, (31), 10 states have call successors, (31) [2022-11-20 11:03:40,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:03:40,159 INFO L93 Difference]: Finished difference Result 1084 states and 1297 transitions. [2022-11-20 11:03:40,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-11-20 11:03:40,160 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 4.866666666666666) internal successors, (146), 27 states have internal predecessors, (146), 10 states have call successors, (32), 10 states have call predecessors, (32), 9 states have return successors, (31), 11 states have call predecessors, (31), 10 states have call successors, (31) Word has length 140 [2022-11-20 11:03:40,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:03:40,165 INFO L225 Difference]: With dead ends: 1084 [2022-11-20 11:03:40,165 INFO L226 Difference]: Without dead ends: 896 [2022-11-20 11:03:40,168 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 206 SyntacticMatches, 17 SemanticMatches, 52 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 703 ImplicationChecksByTransitivity, 19.5s TimeCoverageRelationStatistics Valid=268, Invalid=2478, Unknown=14, NotChecked=102, Total=2862 [2022-11-20 11:03:40,169 INFO L413 NwaCegarLoop]: 149 mSDtfsCounter, 266 mSDsluCounter, 1975 mSDsCounter, 0 mSdLazyCounter, 2152 mSolverCounterSat, 209 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 267 SdHoareTripleChecker+Valid, 2124 SdHoareTripleChecker+Invalid, 3410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 209 IncrementalHoareTripleChecker+Valid, 2152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1049 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:03:40,169 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [267 Valid, 2124 Invalid, 3410 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [209 Valid, 2152 Invalid, 0 Unknown, 1049 Unchecked, 3.0s Time] [2022-11-20 11:03:40,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 896 states. [2022-11-20 11:03:40,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 896 to 803. [2022-11-20 11:03:40,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 803 states, 563 states have (on average 1.103019538188277) internal successors, (621), 572 states have internal predecessors, (621), 152 states have call successors, (152), 81 states have call predecessors, (152), 87 states have return successors, (187), 149 states have call predecessors, (187), 150 states have call successors, (187) [2022-11-20 11:03:40,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 960 transitions. [2022-11-20 11:03:40,268 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 960 transitions. Word has length 140 [2022-11-20 11:03:40,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:03:40,269 INFO L495 AbstractCegarLoop]: Abstraction has 803 states and 960 transitions. [2022-11-20 11:03:40,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 4.866666666666666) internal successors, (146), 27 states have internal predecessors, (146), 10 states have call successors, (32), 10 states have call predecessors, (32), 9 states have return successors, (31), 11 states have call predecessors, (31), 10 states have call successors, (31) [2022-11-20 11:03:40,270 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 960 transitions. [2022-11-20 11:03:40,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-11-20 11:03:40,273 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:03:40,273 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 7, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:03:40,287 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2e4569-a56e-416a-a5f9-0e148068e73f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-11-20 11:03:40,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2e4569-a56e-416a-a5f9-0e148068e73f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:03:40,487 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:03:40,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:03:40,487 INFO L85 PathProgramCache]: Analyzing trace with hash -297566762, now seen corresponding path program 1 times [2022-11-20 11:03:40,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:03:40,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517925298] [2022-11-20 11:03:40,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:03:40,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:03:40,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:41,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 11:03:41,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:41,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-20 11:03:41,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:41,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 11:03:41,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:41,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-20 11:03:41,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:41,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:03:41,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:41,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-20 11:03:41,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:41,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-20 11:03:41,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:41,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-20 11:03:41,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:41,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:03:41,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:41,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-20 11:03:41,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:41,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-20 11:03:41,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:41,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-11-20 11:03:41,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:41,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-11-20 11:03:41,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:41,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-11-20 11:03:41,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:41,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-11-20 11:03:41,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:42,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-11-20 11:03:42,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:42,177 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2022-11-20 11:03:42,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:03:42,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517925298] [2022-11-20 11:03:42,179 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517925298] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:03:42,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1934464676] [2022-11-20 11:03:42,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:03:42,180 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:03:42,180 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2e4569-a56e-416a-a5f9-0e148068e73f/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:03:42,181 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2e4569-a56e-416a-a5f9-0e148068e73f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:03:42,187 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2e4569-a56e-416a-a5f9-0e148068e73f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-11-20 11:03:43,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:43,043 INFO L263 TraceCheckSpWp]: Trace formula consists of 2900 conjuncts, 60 conjunts are in the unsatisfiable core [2022-11-20 11:03:43,054 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:03:43,060 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 [2022-11-20 11:03:43,571 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-20 11:03:43,571 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 1 case distinctions, treesize of input 12 treesize of output 14 [2022-11-20 11:03:43,634 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 11:03:44,239 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-20 11:03:44,240 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 7 [2022-11-20 11:03:46,430 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((|v_ULTIMATE.start_aws_byte_buf_init_copy_harness_~#src~0#1.base_BEFORE_CALL_94| Int)) (not (= (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_byte_buf_init_copy_harness_~#src~0#1.base_BEFORE_CALL_94|) 8) 0))) (exists ((|bounded_malloc_#res.base| Int) (v_ArrVal_2708 Int)) (and (= |c_#valid| (store |c_old(#valid)| |bounded_malloc_#res.base| v_ArrVal_2708)) (< |bounded_malloc_#res.base| |c_#StackHeapBarrier|)))) is different from true [2022-11-20 11:03:46,482 INFO L321 Elim1Store]: treesize reduction 46, result has 40.3 percent of original size [2022-11-20 11:03:46,482 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 23 treesize of output 42 [2022-11-20 11:03:47,276 INFO L321 Elim1Store]: treesize reduction 8, result has 78.4 percent of original size [2022-11-20 11:03:47,277 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 59 treesize of output 67 [2022-11-20 11:03:47,374 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 27 treesize of output 27 [2022-11-20 11:03:49,572 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 27 treesize of output 27 [2022-11-20 11:03:56,208 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 16 treesize of output 8 [2022-11-20 11:03:56,248 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 53 proven. 50 refuted. 0 times theorem prover too weak. 60 trivial. 2 not checked. [2022-11-20 11:03:56,248 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:03:58,506 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1934464676] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:03:58,506 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:03:58,507 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 19] total 31 [2022-11-20 11:03:58,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388526997] [2022-11-20 11:03:58,507 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:03:58,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-11-20 11:03:58,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:03:58,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-11-20 11:03:58,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=941, Unknown=12, NotChecked=62, Total=1122 [2022-11-20 11:03:58,510 INFO L87 Difference]: Start difference. First operand 803 states and 960 transitions. Second operand has 31 states, 31 states have (on average 4.903225806451613) internal successors, (152), 28 states have internal predecessors, (152), 10 states have call successors, (32), 10 states have call predecessors, (32), 9 states have return successors, (31), 11 states have call predecessors, (31), 10 states have call successors, (31) [2022-11-20 11:04:08,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:04:08,133 INFO L93 Difference]: Finished difference Result 1039 states and 1244 transitions. [2022-11-20 11:04:08,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-11-20 11:04:08,134 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.903225806451613) internal successors, (152), 28 states have internal predecessors, (152), 10 states have call successors, (32), 10 states have call predecessors, (32), 9 states have return successors, (31), 11 states have call predecessors, (31), 10 states have call successors, (31) Word has length 143 [2022-11-20 11:04:08,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:04:08,140 INFO L225 Difference]: With dead ends: 1039 [2022-11-20 11:04:08,140 INFO L226 Difference]: Without dead ends: 862 [2022-11-20 11:04:08,142 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 209 SyntacticMatches, 17 SemanticMatches, 48 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 553 ImplicationChecksByTransitivity, 21.5s TimeCoverageRelationStatistics Valid=229, Invalid=2113, Unknown=14, NotChecked=94, Total=2450 [2022-11-20 11:04:08,143 INFO L413 NwaCegarLoop]: 177 mSDtfsCounter, 136 mSDsluCounter, 1815 mSDsCounter, 0 mSdLazyCounter, 1991 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 1992 SdHoareTripleChecker+Invalid, 3122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 1991 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1068 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-20 11:04:08,144 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 1992 Invalid, 3122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 1991 Invalid, 0 Unknown, 1068 Unchecked, 2.6s Time] [2022-11-20 11:04:08,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 862 states. [2022-11-20 11:04:08,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 862 to 834. [2022-11-20 11:04:08,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 834 states, 590 states have (on average 1.1033898305084746) internal successors, (651), 600 states have internal predecessors, (651), 152 states have call successors, (152), 84 states have call predecessors, (152), 91 states have return successors, (187), 149 states have call predecessors, (187), 150 states have call successors, (187) [2022-11-20 11:04:08,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 834 states to 834 states and 990 transitions. [2022-11-20 11:04:08,248 INFO L78 Accepts]: Start accepts. Automaton has 834 states and 990 transitions. Word has length 143 [2022-11-20 11:04:08,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:04:08,249 INFO L495 AbstractCegarLoop]: Abstraction has 834 states and 990 transitions. [2022-11-20 11:04:08,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 4.903225806451613) internal successors, (152), 28 states have internal predecessors, (152), 10 states have call successors, (32), 10 states have call predecessors, (32), 9 states have return successors, (31), 11 states have call predecessors, (31), 10 states have call successors, (31) [2022-11-20 11:04:08,250 INFO L276 IsEmpty]: Start isEmpty. Operand 834 states and 990 transitions. [2022-11-20 11:04:08,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-11-20 11:04:08,253 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:04:08,253 INFO L195 NwaCegarLoop]: trace histogram [9, 7, 7, 7, 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] [2022-11-20 11:04:08,274 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2e4569-a56e-416a-a5f9-0e148068e73f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-11-20 11:04:08,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2e4569-a56e-416a-a5f9-0e148068e73f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2022-11-20 11:04:08,467 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:04:08,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:04:08,467 INFO L85 PathProgramCache]: Analyzing trace with hash 220525877, now seen corresponding path program 1 times [2022-11-20 11:04:08,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:04:08,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611284630] [2022-11-20 11:04:08,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:04:08,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:04:08,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:04:09,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 11:04:09,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:04:09,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-20 11:04:09,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:04:09,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 11:04:09,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:04:09,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:04:09,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:04:09,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-20 11:04:09,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:04:09,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-20 11:04:09,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:04:09,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-20 11:04:09,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:04:09,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:04:09,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:04:09,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-20 11:04:09,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:04:09,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-20 11:04:09,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:04:09,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-20 11:04:09,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:04:09,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-20 11:04:09,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:04:09,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-20 11:04:09,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:04:09,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-11-20 11:04:09,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:04:10,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-11-20 11:04:10,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:04:10,211 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2022-11-20 11:04:10,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:04:10,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611284630] [2022-11-20 11:04:10,211 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611284630] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:04:10,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1652165464] [2022-11-20 11:04:10,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:04:10,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:04:10,212 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2e4569-a56e-416a-a5f9-0e148068e73f/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:04:10,215 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2e4569-a56e-416a-a5f9-0e148068e73f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:04:10,238 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2e4569-a56e-416a-a5f9-0e148068e73f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-11-20 11:04:11,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:04:11,120 INFO L263 TraceCheckSpWp]: Trace formula consists of 2908 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-20 11:04:11,125 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:04:11,335 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2022-11-20 11:04:11,335 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:04:11,335 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1652165464] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:04:11,335 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:04:11,335 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [15] total 22 [2022-11-20 11:04:11,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526510855] [2022-11-20 11:04:11,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:04:11,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 11:04:11,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:04:11,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 11:04:11,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=413, Unknown=0, NotChecked=0, Total=462 [2022-11-20 11:04:11,338 INFO L87 Difference]: Start difference. First operand 834 states and 990 transitions. Second operand has 9 states, 8 states have (on average 10.25) internal successors, (82), 8 states have internal predecessors, (82), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-20 11:04:11,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:04:11,650 INFO L93 Difference]: Finished difference Result 1171 states and 1399 transitions. [2022-11-20 11:04:11,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 11:04:11,651 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 10.25) internal successors, (82), 8 states have internal predecessors, (82), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 143 [2022-11-20 11:04:11,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:04:11,654 INFO L225 Difference]: With dead ends: 1171 [2022-11-20 11:04:11,655 INFO L226 Difference]: Without dead ends: 499 [2022-11-20 11:04:11,657 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=63, Invalid=537, Unknown=0, NotChecked=0, Total=600 [2022-11-20 11:04:11,658 INFO L413 NwaCegarLoop]: 207 mSDtfsCounter, 13 mSDsluCounter, 1392 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 1599 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:04:11,659 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 1599 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 11:04:11,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 499 states. [2022-11-20 11:04:11,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 499 to 484. [2022-11-20 11:04:11,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 484 states, 352 states have (on average 1.1051136363636365) internal successors, (389), 358 states have internal predecessors, (389), 81 states have call successors, (81), 47 states have call predecessors, (81), 50 states have return successors, (99), 78 states have call predecessors, (99), 80 states have call successors, (99) [2022-11-20 11:04:11,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 484 states to 484 states and 569 transitions. [2022-11-20 11:04:11,724 INFO L78 Accepts]: Start accepts. Automaton has 484 states and 569 transitions. Word has length 143 [2022-11-20 11:04:11,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:04:11,724 INFO L495 AbstractCegarLoop]: Abstraction has 484 states and 569 transitions. [2022-11-20 11:04:11,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 10.25) internal successors, (82), 8 states have internal predecessors, (82), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-20 11:04:11,725 INFO L276 IsEmpty]: Start isEmpty. Operand 484 states and 569 transitions. [2022-11-20 11:04:11,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-11-20 11:04:11,727 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:04:11,728 INFO L195 NwaCegarLoop]: trace histogram [9, 7, 7, 7, 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] [2022-11-20 11:04:11,758 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2e4569-a56e-416a-a5f9-0e148068e73f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-11-20 11:04:11,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2e4569-a56e-416a-a5f9-0e148068e73f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-11-20 11:04:11,939 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:04:11,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:04:11,940 INFO L85 PathProgramCache]: Analyzing trace with hash -1910010389, now seen corresponding path program 2 times [2022-11-20 11:04:11,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:04:11,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822547368] [2022-11-20 11:04:11,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:04:11,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:04:12,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:04:12,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 11:04:12,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:04:12,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-20 11:04:12,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:04:12,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 11:04:12,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:04:12,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:04:12,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:04:12,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-20 11:04:12,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:04:12,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-20 11:04:12,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:04:12,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-20 11:04:12,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:04:12,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:04:12,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:04:12,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-20 11:04:12,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:04:12,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-20 11:04:12,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:04:12,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-20 11:04:12,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:04:12,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-11-20 11:04:12,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:04:12,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-11-20 11:04:12,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:04:12,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-11-20 11:04:12,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:04:13,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-11-20 11:04:13,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:04:13,487 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2022-11-20 11:04:13,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:04:13,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822547368] [2022-11-20 11:04:13,488 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822547368] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:04:13,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1256239058] [2022-11-20 11:04:13,488 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:04:13,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:04:13,488 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2e4569-a56e-416a-a5f9-0e148068e73f/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:04:13,490 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2e4569-a56e-416a-a5f9-0e148068e73f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:04:13,492 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2e4569-a56e-416a-a5f9-0e148068e73f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-11-20 11:04:14,840 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 11:04:14,840 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:04:14,857 INFO L263 TraceCheckSpWp]: Trace formula consists of 2908 conjuncts, 108 conjunts are in the unsatisfiable core [2022-11-20 11:04:14,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:04:14,880 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 [2022-11-20 11:04:15,401 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-20 11:04:15,402 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 [2022-11-20 11:04:15,417 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 11:04:16,173 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-20 11:04:20,577 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-20 11:04:20,577 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 1 case distinctions, treesize of input 12 treesize of output 18 [2022-11-20 11:04:25,259 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-20 11:04:25,259 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-11-20 11:04:25,362 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 19 treesize of output 21 [2022-11-20 11:04:27,627 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 19 treesize of output 21 [2022-11-20 11:04:34,924 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 57 proven. 53 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2022-11-20 11:04:34,924 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:04:35,680 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1256239058] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:04:35,680 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:04:35,680 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 25] total 38 [2022-11-20 11:04:35,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50625911] [2022-11-20 11:04:35,681 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:04:35,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-11-20 11:04:35,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:04:35,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-11-20 11:04:35,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=1731, Unknown=17, NotChecked=0, Total=1892 [2022-11-20 11:04:35,684 INFO L87 Difference]: Start difference. First operand 484 states and 569 transitions. Second operand has 38 states, 36 states have (on average 4.222222222222222) internal successors, (152), 35 states have internal predecessors, (152), 11 states have call successors, (30), 10 states have call predecessors, (30), 11 states have return successors, (29), 11 states have call predecessors, (29), 11 states have call successors, (29) [2022-11-20 11:04:47,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:04:47,428 INFO L93 Difference]: Finished difference Result 783 states and 941 transitions. [2022-11-20 11:04:47,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-11-20 11:04:47,429 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 36 states have (on average 4.222222222222222) internal successors, (152), 35 states have internal predecessors, (152), 11 states have call successors, (30), 10 states have call predecessors, (30), 11 states have return successors, (29), 11 states have call predecessors, (29), 11 states have call successors, (29) Word has length 143 [2022-11-20 11:04:47,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:04:47,433 INFO L225 Difference]: With dead ends: 783 [2022-11-20 11:04:47,433 INFO L226 Difference]: Without dead ends: 553 [2022-11-20 11:04:47,436 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 204 SyntacticMatches, 14 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1017 ImplicationChecksByTransitivity, 29.4s TimeCoverageRelationStatistics Valid=301, Invalid=3837, Unknown=22, NotChecked=0, Total=4160 [2022-11-20 11:04:47,436 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 276 mSDsluCounter, 1540 mSDsCounter, 0 mSdLazyCounter, 1528 mSolverCounterSat, 241 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 298 SdHoareTripleChecker+Valid, 1703 SdHoareTripleChecker+Invalid, 3166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 241 IncrementalHoareTripleChecker+Valid, 1528 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1397 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:04:47,437 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [298 Valid, 1703 Invalid, 3166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [241 Valid, 1528 Invalid, 0 Unknown, 1397 Unchecked, 2.1s Time] [2022-11-20 11:04:47,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 553 states. [2022-11-20 11:04:47,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 553 to 485. [2022-11-20 11:04:47,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 485 states, 352 states have (on average 1.09375) internal successors, (385), 357 states have internal predecessors, (385), 82 states have call successors, (82), 48 states have call predecessors, (82), 50 states have return successors, (99), 79 states have call predecessors, (99), 81 states have call successors, (99) [2022-11-20 11:04:47,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 485 states to 485 states and 566 transitions. [2022-11-20 11:04:47,507 INFO L78 Accepts]: Start accepts. Automaton has 485 states and 566 transitions. Word has length 143 [2022-11-20 11:04:47,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:04:47,508 INFO L495 AbstractCegarLoop]: Abstraction has 485 states and 566 transitions. [2022-11-20 11:04:47,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 36 states have (on average 4.222222222222222) internal successors, (152), 35 states have internal predecessors, (152), 11 states have call successors, (30), 10 states have call predecessors, (30), 11 states have return successors, (29), 11 states have call predecessors, (29), 11 states have call successors, (29) [2022-11-20 11:04:47,508 INFO L276 IsEmpty]: Start isEmpty. Operand 485 states and 566 transitions. [2022-11-20 11:04:47,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-11-20 11:04:47,510 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:04:47,511 INFO L195 NwaCegarLoop]: trace histogram [10, 7, 7, 7, 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] [2022-11-20 11:04:47,527 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2e4569-a56e-416a-a5f9-0e148068e73f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-11-20 11:04:47,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2e4569-a56e-416a-a5f9-0e148068e73f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:04:47,724 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:04:47,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:04:47,725 INFO L85 PathProgramCache]: Analyzing trace with hash -2135515026, now seen corresponding path program 3 times [2022-11-20 11:04:47,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:04:47,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695216853] [2022-11-20 11:04:47,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:04:47,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:04:47,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:04:48,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 11:04:48,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:04:48,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-20 11:04:48,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:04:48,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 11:04:48,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:04:48,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:04:48,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:04:48,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-20 11:04:48,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:04:48,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-20 11:04:48,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:04:48,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-20 11:04:48,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:04:48,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:04:48,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:04:48,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-20 11:04:48,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:04:48,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-20 11:04:48,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:04:48,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-20 11:04:48,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:04:48,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-11-20 11:04:48,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:04:48,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-11-20 11:04:48,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:04:48,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-11-20 11:04:48,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:04:49,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-11-20 11:04:49,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:04:49,367 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2022-11-20 11:04:49,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:04:49,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695216853] [2022-11-20 11:04:49,368 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695216853] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:04:49,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [618091800] [2022-11-20 11:04:49,368 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 11:04:49,368 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:04:49,369 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2e4569-a56e-416a-a5f9-0e148068e73f/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:04:49,370 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2e4569-a56e-416a-a5f9-0e148068e73f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:04:49,375 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2e4569-a56e-416a-a5f9-0e148068e73f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-11-20 11:04:50,927 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-20 11:04:50,927 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:04:50,936 INFO L263 TraceCheckSpWp]: Trace formula consists of 2408 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 11:04:50,943 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:04:51,113 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2022-11-20 11:04:51,113 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:04:51,114 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [618091800] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:04:51,114 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:04:51,114 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [16] total 21 [2022-11-20 11:04:51,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956045797] [2022-11-20 11:04:51,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:04:51,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:04:51,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:04:51,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:04:51,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=372, Unknown=0, NotChecked=0, Total=420 [2022-11-20 11:04:51,116 INFO L87 Difference]: Start difference. First operand 485 states and 566 transitions. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 6 states have internal predecessors, (74), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-20 11:04:51,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:04:51,307 INFO L93 Difference]: Finished difference Result 687 states and 813 transitions. [2022-11-20 11:04:51,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 11:04:51,308 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 6 states have internal predecessors, (74), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) Word has length 144 [2022-11-20 11:04:51,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:04:51,311 INFO L225 Difference]: With dead ends: 687 [2022-11-20 11:04:51,311 INFO L226 Difference]: Without dead ends: 474 [2022-11-20 11:04:51,312 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=448, Unknown=0, NotChecked=0, Total=506 [2022-11-20 11:04:51,313 INFO L413 NwaCegarLoop]: 224 mSDtfsCounter, 11 mSDsluCounter, 1087 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 1311 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:04:51,314 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 1311 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:04:51,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 474 states. [2022-11-20 11:04:51,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 474 to 470. [2022-11-20 11:04:51,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 470 states, 337 states have (on average 1.0712166172106825) internal successors, (361), 344 states have internal predecessors, (361), 81 states have call successors, (81), 47 states have call predecessors, (81), 51 states have return successors, (101), 78 states have call predecessors, (101), 80 states have call successors, (101) [2022-11-20 11:04:51,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 470 states to 470 states and 543 transitions. [2022-11-20 11:04:51,375 INFO L78 Accepts]: Start accepts. Automaton has 470 states and 543 transitions. Word has length 144 [2022-11-20 11:04:51,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:04:51,376 INFO L495 AbstractCegarLoop]: Abstraction has 470 states and 543 transitions. [2022-11-20 11:04:51,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 6 states have internal predecessors, (74), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-20 11:04:51,377 INFO L276 IsEmpty]: Start isEmpty. Operand 470 states and 543 transitions. [2022-11-20 11:04:51,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-11-20 11:04:51,379 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:04:51,379 INFO L195 NwaCegarLoop]: trace histogram [10, 7, 7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:04:51,397 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2e4569-a56e-416a-a5f9-0e148068e73f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-11-20 11:04:51,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2e4569-a56e-416a-a5f9-0e148068e73f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:04:51,592 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:04:51,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:04:51,592 INFO L85 PathProgramCache]: Analyzing trace with hash 1921773867, now seen corresponding path program 1 times [2022-11-20 11:04:51,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:04:51,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781204369] [2022-11-20 11:04:51,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:04:51,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:04:51,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:04:52,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 11:04:52,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:04:52,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-20 11:04:52,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:04:52,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 11:04:52,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:04:52,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-20 11:04:52,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:04:52,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:04:52,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:04:52,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-20 11:04:52,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:04:52,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-20 11:04:52,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:04:52,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-20 11:04:52,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:04:52,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:04:52,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:04:52,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-20 11:04:52,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:04:52,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-20 11:04:52,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:04:52,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-11-20 11:04:52,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:04:52,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-11-20 11:04:52,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:04:52,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-11-20 11:04:52,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:04:52,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-11-20 11:04:52,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:04:53,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-11-20 11:04:53,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:04:53,153 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2022-11-20 11:04:53,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:04:53,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781204369] [2022-11-20 11:04:53,154 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781204369] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:04:53,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1846717322] [2022-11-20 11:04:53,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:04:53,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:04:53,154 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2e4569-a56e-416a-a5f9-0e148068e73f/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:04:53,155 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2e4569-a56e-416a-a5f9-0e148068e73f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:04:53,157 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2e4569-a56e-416a-a5f9-0e148068e73f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-11-20 11:04:54,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:04:54,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 2947 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-20 11:04:54,154 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:04:54,989 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 17 treesize of output 9 [2022-11-20 11:04:55,034 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 104 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2022-11-20 11:04:55,035 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:04:55,035 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1846717322] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:04:55,035 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:04:55,035 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [16] total 23 [2022-11-20 11:04:55,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831585999] [2022-11-20 11:04:55,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:04:55,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 11:04:55,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:04:55,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 11:04:55,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=452, Unknown=0, NotChecked=0, Total=506 [2022-11-20 11:04:55,037 INFO L87 Difference]: Start difference. First operand 470 states and 543 transitions. Second operand has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 9 states have internal predecessors, (87), 5 states have call successors, (17), 3 states have call predecessors, (17), 4 states have return successors, (16), 5 states have call predecessors, (16), 5 states have call successors, (16) [2022-11-20 11:04:56,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:04:56,115 INFO L93 Difference]: Finished difference Result 720 states and 863 transitions. [2022-11-20 11:04:56,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 11:04:56,116 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 9 states have internal predecessors, (87), 5 states have call successors, (17), 3 states have call predecessors, (17), 4 states have return successors, (16), 5 states have call predecessors, (16), 5 states have call successors, (16) Word has length 151 [2022-11-20 11:04:56,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:04:56,119 INFO L225 Difference]: With dead ends: 720 [2022-11-20 11:04:56,119 INFO L226 Difference]: Without dead ends: 482 [2022-11-20 11:04:56,121 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 169 SyntacticMatches, 5 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=80, Invalid=676, Unknown=0, NotChecked=0, Total=756 [2022-11-20 11:04:56,121 INFO L413 NwaCegarLoop]: 259 mSDtfsCounter, 110 mSDsluCounter, 1309 mSDsCounter, 0 mSdLazyCounter, 380 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 1568 SdHoareTripleChecker+Invalid, 503 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 67 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-20 11:04:56,122 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 1568 Invalid, 503 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 380 Invalid, 0 Unknown, 67 Unchecked, 0.8s Time] [2022-11-20 11:04:56,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 482 states. [2022-11-20 11:04:56,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 482 to 398. [2022-11-20 11:04:56,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 398 states, 286 states have (on average 1.06993006993007) internal successors, (306), 291 states have internal predecessors, (306), 67 states have call successors, (67), 40 states have call predecessors, (67), 44 states have return successors, (84), 66 states have call predecessors, (84), 66 states have call successors, (84) [2022-11-20 11:04:56,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 457 transitions. [2022-11-20 11:04:56,192 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 457 transitions. Word has length 151 [2022-11-20 11:04:56,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:04:56,194 INFO L495 AbstractCegarLoop]: Abstraction has 398 states and 457 transitions. [2022-11-20 11:04:56,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 9 states have internal predecessors, (87), 5 states have call successors, (17), 3 states have call predecessors, (17), 4 states have return successors, (16), 5 states have call predecessors, (16), 5 states have call successors, (16) [2022-11-20 11:04:56,196 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 457 transitions. [2022-11-20 11:04:56,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-11-20 11:04:56,198 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:04:56,198 INFO L195 NwaCegarLoop]: trace histogram [10, 7, 7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-20 11:04:56,216 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2e4569-a56e-416a-a5f9-0e148068e73f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-11-20 11:04:56,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2e4569-a56e-416a-a5f9-0e148068e73f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-11-20 11:04:56,411 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:04:56,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:04:56,411 INFO L85 PathProgramCache]: Analyzing trace with hash 590315091, now seen corresponding path program 1 times [2022-11-20 11:04:56,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:04:56,411 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328593666] [2022-11-20 11:04:56,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:04:56,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:04:56,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:04:57,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 11:04:57,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:04:57,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-20 11:04:57,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:04:57,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 11:04:57,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:04:57,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:04:57,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:04:57,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-20 11:04:57,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:04:57,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-20 11:04:57,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:04:57,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-20 11:04:57,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:04:57,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:04:57,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:04:57,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-20 11:04:57,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:04:57,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-20 11:04:57,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:04:57,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-20 11:04:57,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:04:57,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-11-20 11:04:57,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:04:57,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-11-20 11:04:57,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:04:57,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-11-20 11:04:57,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:04:58,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-11-20 11:04:58,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:04:58,042 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2022-11-20 11:04:58,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:04:58,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328593666] [2022-11-20 11:04:58,043 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328593666] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:04:58,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [547617637] [2022-11-20 11:04:58,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:04:58,044 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:04:58,044 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2e4569-a56e-416a-a5f9-0e148068e73f/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:04:58,046 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2e4569-a56e-416a-a5f9-0e148068e73f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:04:58,057 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2e4569-a56e-416a-a5f9-0e148068e73f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-11-20 11:04:59,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:04:59,040 INFO L263 TraceCheckSpWp]: Trace formula consists of 2934 conjuncts, 60 conjunts are in the unsatisfiable core [2022-11-20 11:04:59,047 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:04:59,059 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 [2022-11-20 11:04:59,509 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-20 11:04:59,510 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 1 case distinctions, treesize of input 12 treesize of output 14 [2022-11-20 11:04:59,586 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 11:05:00,189 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-20 11:05:00,189 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 7 [2022-11-20 11:05:02,388 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((|bounded_malloc_#res.base| Int) (v_ArrVal_4374 Int)) (and (= |c_#valid| (store |c_old(#valid)| |bounded_malloc_#res.base| v_ArrVal_4374)) (< |bounded_malloc_#res.base| |c_#StackHeapBarrier|))) (exists ((|v_ULTIMATE.start_aws_byte_buf_init_copy_harness_~#src~0#1.base_BEFORE_CALL_113| Int)) (not (= (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_byte_buf_init_copy_harness_~#src~0#1.base_BEFORE_CALL_113|) 8) 0)))) is different from true [2022-11-20 11:05:02,455 INFO L321 Elim1Store]: treesize reduction 46, result has 40.3 percent of original size [2022-11-20 11:05:02,456 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 23 treesize of output 42 [2022-11-20 11:05:03,214 INFO L321 Elim1Store]: treesize reduction 8, result has 78.4 percent of original size [2022-11-20 11:05:03,215 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 59 treesize of output 67 [2022-11-20 11:05:03,313 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 27 treesize of output 27 [2022-11-20 11:05:05,528 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 27 treesize of output 27 [2022-11-20 11:05:12,296 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 16 treesize of output 8 [2022-11-20 11:05:12,340 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 57 proven. 53 refuted. 0 times theorem prover too weak. 79 trivial. 2 not checked. [2022-11-20 11:05:12,340 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:05:12,472 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4376 (Array Int Int))) (not (= (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_save_byte_from_array_~storage#1.base| v_ArrVal_4376) |c_ULTIMATE.start_aws_byte_buf_init_copy_harness_~#src~0#1.base|) (+ |c_ULTIMATE.start_aws_byte_buf_init_copy_harness_~#src~0#1.offset| 8)) 0))) is different from false [2022-11-20 11:05:12,480 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [547617637] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:05:12,480 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:05:12,481 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 19] total 33 [2022-11-20 11:05:12,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71790568] [2022-11-20 11:05:12,481 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:05:12,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-11-20 11:05:12,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:05:12,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-11-20 11:05:12,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=1016, Unknown=3, NotChecked=130, Total=1260 [2022-11-20 11:05:12,484 INFO L87 Difference]: Start difference. First operand 398 states and 457 transitions. Second operand has 33 states, 33 states have (on average 4.7272727272727275) internal successors, (156), 30 states have internal predecessors, (156), 10 states have call successors, (30), 10 states have call predecessors, (30), 9 states have return successors, (29), 11 states have call predecessors, (29), 10 states have call successors, (29) [2022-11-20 11:05:20,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:05:20,617 INFO L93 Difference]: Finished difference Result 621 states and 717 transitions. [2022-11-20 11:05:20,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-11-20 11:05:20,618 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 4.7272727272727275) internal successors, (156), 30 states have internal predecessors, (156), 10 states have call successors, (30), 10 states have call predecessors, (30), 9 states have return successors, (29), 11 states have call predecessors, (29), 10 states have call successors, (29) Word has length 146 [2022-11-20 11:05:20,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:05:20,621 INFO L225 Difference]: With dead ends: 621 [2022-11-20 11:05:20,621 INFO L226 Difference]: Without dead ends: 493 [2022-11-20 11:05:20,623 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 217 SyntacticMatches, 15 SemanticMatches, 57 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 735 ImplicationChecksByTransitivity, 17.9s TimeCoverageRelationStatistics Valid=281, Invalid=2915, Unknown=4, NotChecked=222, Total=3422 [2022-11-20 11:05:20,623 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 287 mSDsluCounter, 1549 mSDsCounter, 0 mSdLazyCounter, 2088 mSolverCounterSat, 225 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 288 SdHoareTripleChecker+Valid, 1680 SdHoareTripleChecker+Invalid, 3277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 225 IncrementalHoareTripleChecker+Valid, 2088 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 964 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-11-20 11:05:20,624 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [288 Valid, 1680 Invalid, 3277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [225 Valid, 2088 Invalid, 0 Unknown, 964 Unchecked, 2.8s Time] [2022-11-20 11:05:20,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 493 states. [2022-11-20 11:05:20,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 493 to 413. [2022-11-20 11:05:20,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 413 states, 300 states have (on average 1.07) internal successors, (321), 306 states have internal predecessors, (321), 67 states have call successors, (67), 40 states have call predecessors, (67), 45 states have return successors, (84), 66 states have call predecessors, (84), 66 states have call successors, (84) [2022-11-20 11:05:20,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 472 transitions. [2022-11-20 11:05:20,685 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 472 transitions. Word has length 146 [2022-11-20 11:05:20,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:05:20,686 INFO L495 AbstractCegarLoop]: Abstraction has 413 states and 472 transitions. [2022-11-20 11:05:20,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 4.7272727272727275) internal successors, (156), 30 states have internal predecessors, (156), 10 states have call successors, (30), 10 states have call predecessors, (30), 9 states have return successors, (29), 11 states have call predecessors, (29), 10 states have call successors, (29) [2022-11-20 11:05:20,686 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 472 transitions. [2022-11-20 11:05:20,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-11-20 11:05:20,688 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:05:20,689 INFO L195 NwaCegarLoop]: trace histogram [11, 7, 7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:05:20,708 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2e4569-a56e-416a-a5f9-0e148068e73f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-11-20 11:05:20,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2e4569-a56e-416a-a5f9-0e148068e73f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:05:20,903 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:05:20,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:05:20,904 INFO L85 PathProgramCache]: Analyzing trace with hash 11184896, now seen corresponding path program 4 times [2022-11-20 11:05:20,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:05:20,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619725185] [2022-11-20 11:05:20,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:05:20,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:05:21,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:05:21,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 11:05:21,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:05:21,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-20 11:05:21,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:05:21,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 11:05:21,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:05:21,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:05:21,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:05:21,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-20 11:05:21,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:05:21,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-20 11:05:21,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:05:21,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-20 11:05:21,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:05:21,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:05:21,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:05:21,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-20 11:05:21,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:05:21,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-20 11:05:21,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:05:21,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-20 11:05:21,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:05:21,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-11-20 11:05:21,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:05:21,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-11-20 11:05:21,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:05:21,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-11-20 11:05:21,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:05:22,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-11-20 11:05:22,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:05:22,389 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2022-11-20 11:05:22,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:05:22,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619725185] [2022-11-20 11:05:22,389 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619725185] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:05:22,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1053268647] [2022-11-20 11:05:22,390 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-20 11:05:22,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:05:22,390 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2e4569-a56e-416a-a5f9-0e148068e73f/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:05:22,391 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2e4569-a56e-416a-a5f9-0e148068e73f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:05:22,399 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2e4569-a56e-416a-a5f9-0e148068e73f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-11-20 11:05:23,408 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-20 11:05:23,408 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:05:23,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 2958 conjuncts, 60 conjunts are in the unsatisfiable core [2022-11-20 11:05:23,428 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:05:23,433 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 [2022-11-20 11:05:23,940 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-20 11:05:23,940 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-20 11:05:24,020 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 11:05:24,626 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-20 11:05:33,890 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((|v_ULTIMATE.start_aws_byte_buf_init_copy_harness_~#src~0#1.base_BEFORE_CALL_121| Int)) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_byte_buf_init_copy_harness_~#src~0#1.base_BEFORE_CALL_121|) 8))) (and (not (= .cse0 0)) (not (= |v_ULTIMATE.start_aws_byte_buf_init_copy_harness_~#src~0#1.base_BEFORE_CALL_121| .cse0))))) (exists ((|bounded_malloc_#res.base| Int)) (= |c_#valid| (store |c_old(#valid)| |bounded_malloc_#res.base| 1)))) is different from true [2022-11-20 11:05:33,937 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-20 11:05:33,937 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 1 case distinctions, treesize of input 12 treesize of output 14 [2022-11-20 11:05:34,281 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-20 11:05:34,281 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-20 11:05:34,359 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 27 treesize of output 27 [2022-11-20 11:05:42,657 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 27 treesize of output 27 [2022-11-20 11:06:06,661 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 24 treesize of output 12 [2022-11-20 11:06:06,710 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 57 proven. 53 refuted. 0 times theorem prover too weak. 90 trivial. 2 not checked. [2022-11-20 11:06:06,710 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:06:06,867 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4747 (Array Int Int))) (not (= (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_save_byte_from_array_~storage#1.base| v_ArrVal_4747) |c_ULTIMATE.start_aws_byte_buf_init_copy_harness_~#src~0#1.base|) (+ |c_ULTIMATE.start_aws_byte_buf_init_copy_harness_~#src~0#1.offset| 8)) 0))) is different from false [2022-11-20 11:06:06,875 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1053268647] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:06:06,875 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:06:06,876 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 32 [2022-11-20 11:06:06,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474353452] [2022-11-20 11:06:06,876 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:06:06,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-20 11:06:06,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:06:06,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-20 11:06:06,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=960, Unknown=3, NotChecked=126, Total=1190 [2022-11-20 11:06:06,878 INFO L87 Difference]: Start difference. First operand 413 states and 472 transitions. Second operand has 32 states, 32 states have (on average 4.875) internal successors, (156), 29 states have internal predecessors, (156), 9 states have call successors, (30), 9 states have call predecessors, (30), 8 states have return successors, (29), 10 states have call predecessors, (29), 9 states have call successors, (29) [2022-11-20 11:06:25,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:06:25,901 INFO L93 Difference]: Finished difference Result 547 states and 626 transitions. [2022-11-20 11:06:25,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-20 11:06:25,902 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.875) internal successors, (156), 29 states have internal predecessors, (156), 9 states have call successors, (30), 9 states have call predecessors, (30), 8 states have return successors, (29), 10 states have call predecessors, (29), 9 states have call successors, (29) Word has length 147 [2022-11-20 11:06:25,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:06:25,905 INFO L225 Difference]: With dead ends: 547 [2022-11-20 11:06:25,905 INFO L226 Difference]: Without dead ends: 417 [2022-11-20 11:06:25,907 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 221 SyntacticMatches, 18 SemanticMatches, 45 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 373 ImplicationChecksByTransitivity, 59.5s TimeCoverageRelationStatistics Valid=188, Invalid=1790, Unknown=10, NotChecked=174, Total=2162 [2022-11-20 11:06:25,907 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 141 mSDsluCounter, 1839 mSDsCounter, 0 mSdLazyCounter, 1831 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 1965 SdHoareTripleChecker+Invalid, 2966 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 1831 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1088 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:06:25,908 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [155 Valid, 1965 Invalid, 2966 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 1831 Invalid, 0 Unknown, 1088 Unchecked, 2.2s Time] [2022-11-20 11:06:25,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2022-11-20 11:06:25,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 365. [2022-11-20 11:06:25,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 365 states, 262 states have (on average 1.0687022900763359) internal successors, (280), 267 states have internal predecessors, (280), 62 states have call successors, (62), 37 states have call predecessors, (62), 40 states have return successors, (65), 60 states have call predecessors, (65), 61 states have call successors, (65) [2022-11-20 11:06:25,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 407 transitions. [2022-11-20 11:06:25,960 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 407 transitions. Word has length 147 [2022-11-20 11:06:25,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:06:25,961 INFO L495 AbstractCegarLoop]: Abstraction has 365 states and 407 transitions. [2022-11-20 11:06:25,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.875) internal successors, (156), 29 states have internal predecessors, (156), 9 states have call successors, (30), 9 states have call predecessors, (30), 8 states have return successors, (29), 10 states have call predecessors, (29), 9 states have call successors, (29) [2022-11-20 11:06:25,961 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 407 transitions. [2022-11-20 11:06:25,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-11-20 11:06:25,964 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:06:25,964 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 3, 3, 3, 3, 3, 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] [2022-11-20 11:06:25,978 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2e4569-a56e-416a-a5f9-0e148068e73f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-11-20 11:06:26,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2e4569-a56e-416a-a5f9-0e148068e73f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-11-20 11:06:26,179 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:06:26,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:06:26,179 INFO L85 PathProgramCache]: Analyzing trace with hash 1416899052, now seen corresponding path program 1 times [2022-11-20 11:06:26,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:06:26,179 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910594224] [2022-11-20 11:06:26,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:06:26,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:06:26,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:06:26,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 11:06:26,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:06:26,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-20 11:06:26,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:06:26,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 11:06:26,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:06:26,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-20 11:06:26,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:06:26,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:06:26,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:06:26,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-20 11:06:26,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:06:26,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-20 11:06:26,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:06:26,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-20 11:06:26,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:06:26,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:06:26,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:06:26,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-20 11:06:26,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:06:26,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-20 11:06:26,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:06:26,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-20 11:06:26,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:06:26,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-20 11:06:26,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:06:26,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-11-20 11:06:26,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:06:27,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:06:27,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:06:27,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:06:27,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:06:27,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-20 11:06:27,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:06:27,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-20 11:06:27,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:06:27,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-20 11:06:27,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:06:27,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:06:27,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:06:27,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-11-20 11:06:27,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:06:27,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:06:27,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:06:27,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:06:27,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:06:27,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 11:06:27,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:06:27,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-20 11:06:27,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:06:27,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-11-20 11:06:27,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:06:27,366 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2022-11-20 11:06:27,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:06:27,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910594224] [2022-11-20 11:06:27,367 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910594224] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:06:27,367 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:06:27,367 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-20 11:06:27,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130156419] [2022-11-20 11:06:27,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:06:27,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 11:06:27,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:06:27,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 11:06:27,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-20 11:06:27,369 INFO L87 Difference]: Start difference. First operand 365 states and 407 transitions. Second operand has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 5 states have internal predecessors, (74), 2 states have call successors, (26), 5 states have call predecessors, (26), 3 states have return successors, (25), 3 states have call predecessors, (25), 2 states have call successors, (25) [2022-11-20 11:06:28,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:06:28,780 INFO L93 Difference]: Finished difference Result 488 states and 555 transitions. [2022-11-20 11:06:28,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-20 11:06:28,781 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 5 states have internal predecessors, (74), 2 states have call successors, (26), 5 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 189 [2022-11-20 11:06:28,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:06:28,783 INFO L225 Difference]: With dead ends: 488 [2022-11-20 11:06:28,783 INFO L226 Difference]: Without dead ends: 385 [2022-11-20 11:06:28,784 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=71, Invalid=201, Unknown=0, NotChecked=0, Total=272 [2022-11-20 11:06:28,785 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 162 mSDsluCounter, 396 mSDsCounter, 0 mSdLazyCounter, 780 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 498 SdHoareTripleChecker+Invalid, 902 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 780 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:06:28,785 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 498 Invalid, 902 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 780 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-20 11:06:28,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2022-11-20 11:06:28,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 370. [2022-11-20 11:06:28,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 370 states, 266 states have (on average 1.0676691729323309) internal successors, (284), 271 states have internal predecessors, (284), 62 states have call successors, (62), 37 states have call predecessors, (62), 41 states have return successors, (66), 61 states have call predecessors, (66), 61 states have call successors, (66) [2022-11-20 11:06:28,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 412 transitions. [2022-11-20 11:06:28,842 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 412 transitions. Word has length 189 [2022-11-20 11:06:28,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:06:28,843 INFO L495 AbstractCegarLoop]: Abstraction has 370 states and 412 transitions. [2022-11-20 11:06:28,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 5 states have internal predecessors, (74), 2 states have call successors, (26), 5 states have call predecessors, (26), 3 states have return successors, (25), 3 states have call predecessors, (25), 2 states have call successors, (25) [2022-11-20 11:06:28,844 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 412 transitions. [2022-11-20 11:06:28,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-11-20 11:06:28,846 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:06:28,846 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:06:28,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-11-20 11:06:28,847 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:06:28,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:06:28,848 INFO L85 PathProgramCache]: Analyzing trace with hash 542783001, now seen corresponding path program 1 times [2022-11-20 11:06:28,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:06:28,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140366101] [2022-11-20 11:06:28,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:06:28,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:06:28,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:06:30,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 11:06:30,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:06:30,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-20 11:06:30,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:06:30,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 11:06:30,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:06:30,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:06:30,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:06:30,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-20 11:06:30,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:06:30,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-20 11:06:30,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:06:30,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-20 11:06:30,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:06:30,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:06:30,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:06:30,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-20 11:06:30,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:06:30,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-20 11:06:30,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:06:30,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-20 11:06:30,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:06:30,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-20 11:06:30,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:06:30,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-11-20 11:06:30,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:06:30,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:06:30,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:06:30,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:06:30,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:06:30,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-20 11:06:30,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:06:30,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-20 11:06:30,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:06:30,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-20 11:06:30,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:06:30,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:06:30,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:06:30,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-20 11:06:30,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:06:30,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-11-20 11:06:30,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:06:30,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:06:30,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:06:30,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:06:30,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:06:30,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 11:06:30,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:06:30,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-20 11:06:30,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:06:30,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-11-20 11:06:30,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:06:30,882 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 270 trivial. 0 not checked. [2022-11-20 11:06:30,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:06:30,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140366101] [2022-11-20 11:06:30,883 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140366101] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:06:30,884 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:06:30,884 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-20 11:06:30,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525268630] [2022-11-20 11:06:30,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:06:30,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 11:06:30,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:06:30,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 11:06:30,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-20 11:06:30,888 INFO L87 Difference]: Start difference. First operand 370 states and 412 transitions. Second operand has 10 states, 10 states have (on average 7.7) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (26), 6 states have call predecessors, (26), 2 states have return successors, (25), 4 states have call predecessors, (25), 3 states have call successors, (25) [2022-11-20 11:06:32,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:06:32,454 INFO L93 Difference]: Finished difference Result 485 states and 551 transitions. [2022-11-20 11:06:32,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 11:06:32,454 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.7) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (26), 6 states have call predecessors, (26), 2 states have return successors, (25), 4 states have call predecessors, (25), 3 states have call successors, (25) Word has length 190 [2022-11-20 11:06:32,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:06:32,457 INFO L225 Difference]: With dead ends: 485 [2022-11-20 11:06:32,457 INFO L226 Difference]: Without dead ends: 366 [2022-11-20 11:06:32,458 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=82, Invalid=260, Unknown=0, NotChecked=0, Total=342 [2022-11-20 11:06:32,459 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 171 mSDsluCounter, 428 mSDsCounter, 0 mSdLazyCounter, 845 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 530 SdHoareTripleChecker+Invalid, 967 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 845 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:06:32,459 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 530 Invalid, 967 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 845 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-20 11:06:32,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2022-11-20 11:06:32,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 359. [2022-11-20 11:06:32,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 359 states, 258 states have (on average 1.062015503875969) internal successors, (274), 263 states have internal predecessors, (274), 61 states have call successors, (61), 36 states have call predecessors, (61), 39 states have return successors, (64), 59 states have call predecessors, (64), 60 states have call successors, (64) [2022-11-20 11:06:32,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 399 transitions. [2022-11-20 11:06:32,514 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 399 transitions. Word has length 190 [2022-11-20 11:06:32,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:06:32,515 INFO L495 AbstractCegarLoop]: Abstraction has 359 states and 399 transitions. [2022-11-20 11:06:32,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.7) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (26), 6 states have call predecessors, (26), 2 states have return successors, (25), 4 states have call predecessors, (25), 3 states have call successors, (25) [2022-11-20 11:06:32,516 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 399 transitions. [2022-11-20 11:06:32,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2022-11-20 11:06:32,518 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:06:32,518 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:06:32,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-11-20 11:06:32,519 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:06:32,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:06:32,519 INFO L85 PathProgramCache]: Analyzing trace with hash 650546100, now seen corresponding path program 1 times [2022-11-20 11:06:32,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:06:32,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297274956] [2022-11-20 11:06:32,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:06:32,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:06:32,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:06:33,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 11:06:33,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:06:33,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-20 11:06:33,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:06:33,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 11:06:33,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:06:33,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:06:33,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:06:33,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-20 11:06:33,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:06:33,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-20 11:06:33,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:06:33,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-20 11:06:33,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:06:33,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:06:33,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:06:33,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-20 11:06:33,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:06:33,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-20 11:06:33,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:06:33,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-20 11:06:33,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:06:33,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-20 11:06:33,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:06:33,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-11-20 11:06:33,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:06:33,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:06:33,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:06:33,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:06:33,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:06:33,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-20 11:06:33,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:06:33,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-20 11:06:33,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:06:33,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-20 11:06:33,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:06:33,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:06:33,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:06:33,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 11:06:33,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:06:33,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:06:33,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:06:34,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-11-20 11:06:34,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:06:34,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:06:34,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:06:34,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:06:34,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:06:34,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 11:06:34,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:06:34,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-20 11:06:34,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:06:34,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-11-20 11:06:34,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:06:34,200 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 316 trivial. 0 not checked. [2022-11-20 11:06:34,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:06:34,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297274956] [2022-11-20 11:06:34,201 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297274956] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:06:34,201 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:06:34,202 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-20 11:06:34,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057561687] [2022-11-20 11:06:34,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:06:34,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-20 11:06:34,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:06:34,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-20 11:06:34,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-11-20 11:06:34,204 INFO L87 Difference]: Start difference. First operand 359 states and 399 transitions. Second operand has 11 states, 10 states have (on average 7.7) internal successors, (77), 6 states have internal predecessors, (77), 2 states have call successors, (26), 5 states have call predecessors, (26), 2 states have return successors, (25), 2 states have call predecessors, (25), 1 states have call successors, (25) [2022-11-20 11:06:35,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:06:35,800 INFO L93 Difference]: Finished difference Result 382 states and 425 transitions. [2022-11-20 11:06:35,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 11:06:35,800 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 7.7) internal successors, (77), 6 states have internal predecessors, (77), 2 states have call successors, (26), 5 states have call predecessors, (26), 2 states have return successors, (25), 2 states have call predecessors, (25), 1 states have call successors, (25) Word has length 195 [2022-11-20 11:06:35,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:06:35,803 INFO L225 Difference]: With dead ends: 382 [2022-11-20 11:06:35,803 INFO L226 Difference]: Without dead ends: 380 [2022-11-20 11:06:35,804 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2022-11-20 11:06:35,806 INFO L413 NwaCegarLoop]: 103 mSDtfsCounter, 160 mSDsluCounter, 527 mSDsCounter, 0 mSdLazyCounter, 1005 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 630 SdHoareTripleChecker+Invalid, 1117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 1005 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-20 11:06:35,806 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 630 Invalid, 1117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 1005 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-20 11:06:35,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2022-11-20 11:06:35,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 368. [2022-11-20 11:06:35,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 368 states, 264 states have (on average 1.0606060606060606) internal successors, (280), 270 states have internal predecessors, (280), 62 states have call successors, (62), 37 states have call predecessors, (62), 41 states have return successors, (68), 60 states have call predecessors, (68), 61 states have call successors, (68) [2022-11-20 11:06:35,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 410 transitions. [2022-11-20 11:06:35,866 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 410 transitions. Word has length 195 [2022-11-20 11:06:35,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:06:35,867 INFO L495 AbstractCegarLoop]: Abstraction has 368 states and 410 transitions. [2022-11-20 11:06:35,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 7.7) internal successors, (77), 6 states have internal predecessors, (77), 2 states have call successors, (26), 5 states have call predecessors, (26), 2 states have return successors, (25), 2 states have call predecessors, (25), 1 states have call successors, (25) [2022-11-20 11:06:35,867 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 410 transitions. [2022-11-20 11:06:35,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2022-11-20 11:06:35,869 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:06:35,870 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 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] [2022-11-20 11:06:35,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-11-20 11:06:35,870 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:06:35,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:06:35,871 INFO L85 PathProgramCache]: Analyzing trace with hash 443829862, now seen corresponding path program 1 times [2022-11-20 11:06:35,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:06:35,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728301253] [2022-11-20 11:06:35,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:06:35,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:06:37,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:06:42,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 11:06:42,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:06:42,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-20 11:06:42,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:06:42,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 11:06:42,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:06:42,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-20 11:06:42,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:06:42,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:06:42,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:06:42,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-20 11:06:42,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:06:42,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-20 11:06:42,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:06:42,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-20 11:06:42,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:06:42,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:06:42,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:06:42,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-20 11:06:42,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:06:42,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-20 11:06:42,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:06:42,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-20 11:06:42,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:06:42,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-20 11:06:42,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:06:42,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-11-20 11:06:42,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:06:42,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:06:42,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:06:42,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:06:42,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:06:42,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-20 11:06:42,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:06:43,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-20 11:06:43,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:06:43,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-20 11:06:43,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:06:43,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:06:43,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:06:43,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 11:06:43,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:06:43,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:06:43,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:06:43,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-11-20 11:06:43,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:06:43,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:06:43,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:06:43,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:06:43,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:06:43,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 11:06:43,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:06:43,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-20 11:06:43,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:06:43,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-11-20 11:06:43,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:06:43,884 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 51 proven. 14 refuted. 0 times theorem prover too weak. 273 trivial. 0 not checked. [2022-11-20 11:06:43,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:06:43,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728301253] [2022-11-20 11:06:43,885 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728301253] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:06:43,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [579941733] [2022-11-20 11:06:43,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:06:43,885 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:06:43,885 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2e4569-a56e-416a-a5f9-0e148068e73f/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:06:43,887 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2e4569-a56e-416a-a5f9-0e148068e73f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:06:43,906 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2e4569-a56e-416a-a5f9-0e148068e73f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-11-20 11:06:45,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:06:45,091 INFO L263 TraceCheckSpWp]: Trace formula consists of 3006 conjuncts, 84 conjunts are in the unsatisfiable core [2022-11-20 11:06:45,100 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:06:45,303 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 11:06:45,822 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 23 [2022-11-20 11:06:45,826 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 24 treesize of output 16 [2022-11-20 11:06:46,299 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 37 treesize of output 30 [2022-11-20 11:06:47,134 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 125 proven. 50 refuted. 0 times theorem prover too weak. 163 trivial. 0 not checked. [2022-11-20 11:06:47,134 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:06:47,811 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [579941733] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:06:47,812 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:06:47,812 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 19] total 40 [2022-11-20 11:06:47,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421726459] [2022-11-20 11:06:47,812 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:06:47,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-11-20 11:06:47,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:06:47,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-11-20 11:06:47,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=1836, Unknown=0, NotChecked=0, Total=1980 [2022-11-20 11:06:47,818 INFO L87 Difference]: Start difference. First operand 368 states and 410 transitions. Second operand has 40 states, 36 states have (on average 4.722222222222222) internal successors, (170), 34 states have internal predecessors, (170), 17 states have call successors, (50), 7 states have call predecessors, (50), 10 states have return successors, (47), 20 states have call predecessors, (47), 16 states have call successors, (47) [2022-11-20 11:06:56,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:06:56,028 INFO L93 Difference]: Finished difference Result 704 states and 806 transitions. [2022-11-20 11:06:56,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-11-20 11:06:56,029 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 36 states have (on average 4.722222222222222) internal successors, (170), 34 states have internal predecessors, (170), 17 states have call successors, (50), 7 states have call predecessors, (50), 10 states have return successors, (47), 20 states have call predecessors, (47), 16 states have call successors, (47) Word has length 204 [2022-11-20 11:06:56,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:06:56,032 INFO L225 Difference]: With dead ends: 704 [2022-11-20 11:06:56,032 INFO L226 Difference]: Without dead ends: 579 [2022-11-20 11:06:56,035 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 374 GetRequests, 282 SyntacticMatches, 3 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2322 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=711, Invalid=7479, Unknown=0, NotChecked=0, Total=8190 [2022-11-20 11:06:56,036 INFO L413 NwaCegarLoop]: 147 mSDtfsCounter, 798 mSDsluCounter, 2294 mSDsCounter, 0 mSdLazyCounter, 3855 mSolverCounterSat, 412 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 816 SdHoareTripleChecker+Valid, 2441 SdHoareTripleChecker+Invalid, 5304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 412 IncrementalHoareTripleChecker+Valid, 3855 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1037 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-11-20 11:06:56,036 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [816 Valid, 2441 Invalid, 5304 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [412 Valid, 3855 Invalid, 0 Unknown, 1037 Unchecked, 4.5s Time] [2022-11-20 11:06:56,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 579 states. [2022-11-20 11:06:56,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 579 to 570. [2022-11-20 11:06:56,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 570 states, 408 states have (on average 1.0759803921568627) internal successors, (439), 418 states have internal predecessors, (439), 96 states have call successors, (96), 55 states have call predecessors, (96), 65 states have return successors, (112), 96 states have call predecessors, (112), 94 states have call successors, (112) [2022-11-20 11:06:56,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 647 transitions. [2022-11-20 11:06:56,125 INFO L78 Accepts]: Start accepts. Automaton has 570 states and 647 transitions. Word has length 204 [2022-11-20 11:06:56,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:06:56,126 INFO L495 AbstractCegarLoop]: Abstraction has 570 states and 647 transitions. [2022-11-20 11:06:56,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 36 states have (on average 4.722222222222222) internal successors, (170), 34 states have internal predecessors, (170), 17 states have call successors, (50), 7 states have call predecessors, (50), 10 states have return successors, (47), 20 states have call predecessors, (47), 16 states have call successors, (47) [2022-11-20 11:06:56,127 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states and 647 transitions. [2022-11-20 11:06:56,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2022-11-20 11:06:56,130 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:06:56,130 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 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] [2022-11-20 11:06:56,150 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2e4569-a56e-416a-a5f9-0e148068e73f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-11-20 11:06:56,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2e4569-a56e-416a-a5f9-0e148068e73f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:06:56,344 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:06:56,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:06:56,345 INFO L85 PathProgramCache]: Analyzing trace with hash -982458048, now seen corresponding path program 1 times [2022-11-20 11:06:56,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:06:56,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172799723] [2022-11-20 11:06:56,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:06:56,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:06:56,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:06:59,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 11:06:59,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:06:59,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-20 11:06:59,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:06:59,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 11:06:59,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:06:59,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:06:59,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:06:59,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-20 11:06:59,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:00,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-20 11:07:00,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:00,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-20 11:07:00,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:00,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:07:00,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:00,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-20 11:07:00,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:00,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-20 11:07:00,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:00,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-20 11:07:00,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:00,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-20 11:07:00,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:00,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-11-20 11:07:00,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:00,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:07:00,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:00,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:07:00,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:00,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-20 11:07:00,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:00,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-20 11:07:00,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:00,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-20 11:07:00,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:00,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:07:00,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:00,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 11:07:00,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:00,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:07:00,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:00,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-11-20 11:07:00,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:00,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:07:00,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:00,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:07:00,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:00,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 11:07:00,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:00,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-20 11:07:00,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:00,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-11-20 11:07:00,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:01,200 INFO L134 CoverageAnalysis]: Checked inductivity of 332 backedges. 14 proven. 23 refuted. 0 times theorem prover too weak. 295 trivial. 0 not checked. [2022-11-20 11:07:01,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:07:01,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172799723] [2022-11-20 11:07:01,201 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172799723] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:07:01,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1727195271] [2022-11-20 11:07:01,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:07:01,202 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:07:01,202 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2e4569-a56e-416a-a5f9-0e148068e73f/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:07:01,211 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2e4569-a56e-416a-a5f9-0e148068e73f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:07:01,234 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2e4569-a56e-416a-a5f9-0e148068e73f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-11-20 11:07:02,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:02,375 INFO L263 TraceCheckSpWp]: Trace formula consists of 2990 conjuncts, 84 conjunts are in the unsatisfiable core [2022-11-20 11:07:02,384 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:07:02,668 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-20 11:07:02,673 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 11:07:03,586 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 20 treesize of output 8 [2022-11-20 11:07:04,452 INFO L321 Elim1Store]: treesize reduction 132, result has 21.0 percent of original size [2022-11-20 11:07:04,452 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 76 [2022-11-20 11:07:06,182 INFO L321 Elim1Store]: treesize reduction 31, result has 35.4 percent of original size [2022-11-20 11:07:06,182 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 51 treesize of output 59 [2022-11-20 11:07:08,203 INFO L134 CoverageAnalysis]: Checked inductivity of 332 backedges. 19 proven. 277 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-11-20 11:07:08,204 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:07:11,710 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1727195271] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:07:11,710 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:07:11,711 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 21] total 36 [2022-11-20 11:07:11,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745523844] [2022-11-20 11:07:11,711 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:07:11,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-11-20 11:07:11,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:07:11,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-11-20 11:07:11,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=1654, Unknown=0, NotChecked=0, Total=1806 [2022-11-20 11:07:11,714 INFO L87 Difference]: Start difference. First operand 570 states and 647 transitions. Second operand has 36 states, 36 states have (on average 5.694444444444445) internal successors, (205), 32 states have internal predecessors, (205), 14 states have call successors, (50), 10 states have call predecessors, (50), 10 states have return successors, (48), 15 states have call predecessors, (48), 13 states have call successors, (48) [2022-11-20 11:07:20,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:07:20,218 INFO L93 Difference]: Finished difference Result 949 states and 1115 transitions. [2022-11-20 11:07:20,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-11-20 11:07:20,219 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 5.694444444444445) internal successors, (205), 32 states have internal predecessors, (205), 14 states have call successors, (50), 10 states have call predecessors, (50), 10 states have return successors, (48), 15 states have call predecessors, (48), 13 states have call successors, (48) Word has length 199 [2022-11-20 11:07:20,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:07:20,223 INFO L225 Difference]: With dead ends: 949 [2022-11-20 11:07:20,223 INFO L226 Difference]: Without dead ends: 860 [2022-11-20 11:07:20,224 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 359 GetRequests, 258 SyntacticMatches, 17 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2450 ImplicationChecksByTransitivity, 10.0s TimeCoverageRelationStatistics Valid=626, Invalid=6681, Unknown=3, NotChecked=0, Total=7310 [2022-11-20 11:07:20,225 INFO L413 NwaCegarLoop]: 187 mSDtfsCounter, 406 mSDsluCounter, 1985 mSDsCounter, 0 mSdLazyCounter, 3455 mSolverCounterSat, 273 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 437 SdHoareTripleChecker+Valid, 2172 SdHoareTripleChecker+Invalid, 4582 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 273 IncrementalHoareTripleChecker+Valid, 3455 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 854 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-11-20 11:07:20,225 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [437 Valid, 2172 Invalid, 4582 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [273 Valid, 3455 Invalid, 0 Unknown, 854 Unchecked, 4.4s Time] [2022-11-20 11:07:20,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 860 states. [2022-11-20 11:07:20,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 860 to 786. [2022-11-20 11:07:20,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 786 states, 552 states have (on average 1.068840579710145) internal successors, (590), 563 states have internal predecessors, (590), 141 states have call successors, (141), 80 states have call predecessors, (141), 92 states have return successors, (164), 142 states have call predecessors, (164), 138 states have call successors, (164) [2022-11-20 11:07:20,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 786 states to 786 states and 895 transitions. [2022-11-20 11:07:20,330 INFO L78 Accepts]: Start accepts. Automaton has 786 states and 895 transitions. Word has length 199 [2022-11-20 11:07:20,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:07:20,330 INFO L495 AbstractCegarLoop]: Abstraction has 786 states and 895 transitions. [2022-11-20 11:07:20,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 5.694444444444445) internal successors, (205), 32 states have internal predecessors, (205), 14 states have call successors, (50), 10 states have call predecessors, (50), 10 states have return successors, (48), 15 states have call predecessors, (48), 13 states have call successors, (48) [2022-11-20 11:07:20,331 INFO L276 IsEmpty]: Start isEmpty. Operand 786 states and 895 transitions. [2022-11-20 11:07:20,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2022-11-20 11:07:20,334 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:07:20,334 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 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] [2022-11-20 11:07:20,352 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2e4569-a56e-416a-a5f9-0e148068e73f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2022-11-20 11:07:20,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2e4569-a56e-416a-a5f9-0e148068e73f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2022-11-20 11:07:20,547 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:07:20,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:07:20,548 INFO L85 PathProgramCache]: Analyzing trace with hash -724292610, now seen corresponding path program 1 times [2022-11-20 11:07:20,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:07:20,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428855477] [2022-11-20 11:07:20,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:07:20,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:07:20,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:21,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 11:07:21,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:21,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-20 11:07:21,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:21,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 11:07:21,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:21,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:07:21,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:21,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-20 11:07:21,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:21,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-20 11:07:21,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:21,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-20 11:07:21,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:21,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:07:21,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:21,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-20 11:07:21,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:21,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-20 11:07:21,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:21,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-20 11:07:21,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:21,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-20 11:07:21,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:21,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-11-20 11:07:21,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:21,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:07:21,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:21,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:07:21,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:21,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-20 11:07:21,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:21,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-20 11:07:21,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:21,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-20 11:07:21,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:21,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:07:21,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:21,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 11:07:21,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:21,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:07:21,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:21,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-11-20 11:07:21,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:21,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:07:21,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:21,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:07:21,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:21,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 11:07:21,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:21,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-20 11:07:21,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:21,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-11-20 11:07:21,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:21,728 INFO L134 CoverageAnalysis]: Checked inductivity of 332 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2022-11-20 11:07:21,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:07:21,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428855477] [2022-11-20 11:07:21,728 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428855477] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:07:21,728 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:07:21,729 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-20 11:07:21,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135694071] [2022-11-20 11:07:21,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:07:21,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 11:07:21,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:07:21,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 11:07:21,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:07:21,730 INFO L87 Difference]: Start difference. First operand 786 states and 895 transitions. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 5 states have internal predecessors, (84), 2 states have call successors, (26), 5 states have call predecessors, (26), 2 states have return successors, (25), 2 states have call predecessors, (25), 1 states have call successors, (25) [2022-11-20 11:07:22,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:07:22,823 INFO L93 Difference]: Finished difference Result 1019 states and 1198 transitions. [2022-11-20 11:07:22,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 11:07:22,824 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 5 states have internal predecessors, (84), 2 states have call successors, (26), 5 states have call predecessors, (26), 2 states have return successors, (25), 2 states have call predecessors, (25), 1 states have call successors, (25) Word has length 199 [2022-11-20 11:07:22,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:07:22,828 INFO L225 Difference]: With dead ends: 1019 [2022-11-20 11:07:22,828 INFO L226 Difference]: Without dead ends: 787 [2022-11-20 11:07:22,830 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-11-20 11:07:22,831 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 254 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 460 mSolverCounterSat, 159 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 254 SdHoareTripleChecker+Valid, 300 SdHoareTripleChecker+Invalid, 619 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 159 IncrementalHoareTripleChecker+Valid, 460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-20 11:07:22,831 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [254 Valid, 300 Invalid, 619 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [159 Valid, 460 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-20 11:07:22,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2022-11-20 11:07:22,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 782. [2022-11-20 11:07:22,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 782 states, 548 states have (on average 1.062043795620438) internal successors, (582), 559 states have internal predecessors, (582), 141 states have call successors, (141), 80 states have call predecessors, (141), 92 states have return successors, (164), 142 states have call predecessors, (164), 138 states have call successors, (164) [2022-11-20 11:07:22,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 782 states to 782 states and 887 transitions. [2022-11-20 11:07:22,950 INFO L78 Accepts]: Start accepts. Automaton has 782 states and 887 transitions. Word has length 199 [2022-11-20 11:07:22,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:07:22,951 INFO L495 AbstractCegarLoop]: Abstraction has 782 states and 887 transitions. [2022-11-20 11:07:22,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 5 states have internal predecessors, (84), 2 states have call successors, (26), 5 states have call predecessors, (26), 2 states have return successors, (25), 2 states have call predecessors, (25), 1 states have call successors, (25) [2022-11-20 11:07:22,951 INFO L276 IsEmpty]: Start isEmpty. Operand 782 states and 887 transitions. [2022-11-20 11:07:22,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2022-11-20 11:07:22,954 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:07:22,954 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 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] [2022-11-20 11:07:22,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-11-20 11:07:22,955 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:07:22,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:07:22,956 INFO L85 PathProgramCache]: Analyzing trace with hash 1824653782, now seen corresponding path program 1 times [2022-11-20 11:07:22,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:07:22,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211359266] [2022-11-20 11:07:22,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:07:22,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:07:23,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:25,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 11:07:25,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:25,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-20 11:07:25,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:25,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 11:07:25,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:25,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-20 11:07:25,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:25,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:07:25,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:25,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-20 11:07:25,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:25,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-20 11:07:25,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:25,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-20 11:07:25,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:25,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:07:25,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:25,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-20 11:07:25,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:25,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-20 11:07:25,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:25,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-11-20 11:07:25,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:25,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-11-20 11:07:25,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:25,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-11-20 11:07:25,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:25,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-11-20 11:07:25,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:25,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:07:25,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:25,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:07:25,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:25,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-20 11:07:25,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:25,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-20 11:07:25,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:25,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-20 11:07:25,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:25,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:07:25,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:25,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 11:07:25,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:25,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:07:25,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:25,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-11-20 11:07:25,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:25,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:07:25,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:25,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:07:25,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:25,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 11:07:25,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:25,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-20 11:07:25,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:25,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2022-11-20 11:07:25,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:25,989 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 24 proven. 8 refuted. 0 times theorem prover too weak. 344 trivial. 0 not checked. [2022-11-20 11:07:25,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:07:25,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211359266] [2022-11-20 11:07:25,990 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211359266] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:07:25,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1136418967] [2022-11-20 11:07:25,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:07:25,990 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:07:25,990 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2e4569-a56e-416a-a5f9-0e148068e73f/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:07:25,995 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2e4569-a56e-416a-a5f9-0e148068e73f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:07:26,010 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2e4569-a56e-416a-a5f9-0e148068e73f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-11-20 11:07:27,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:27,111 INFO L263 TraceCheckSpWp]: Trace formula consists of 3044 conjuncts, 100 conjunts are in the unsatisfiable core [2022-11-20 11:07:27,120 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:07:27,339 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 11:07:28,450 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-20 11:07:28,451 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 23 [2022-11-20 11:07:28,465 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2022-11-20 11:07:28,561 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 11:07:28,576 INFO L321 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2022-11-20 11:07:28,576 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 29 [2022-11-20 11:07:28,582 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-20 11:07:29,171 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 235 proven. 37 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2022-11-20 11:07:29,171 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:07:30,003 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 10 proven. 10 refuted. 0 times theorem prover too weak. 356 trivial. 0 not checked. [2022-11-20 11:07:30,004 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1136418967] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:07:30,004 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:07:30,004 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 22, 8] total 39 [2022-11-20 11:07:30,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367149829] [2022-11-20 11:07:30,005 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:07:30,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-11-20 11:07:30,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:07:30,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-11-20 11:07:30,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=1370, Unknown=0, NotChecked=0, Total=1482 [2022-11-20 11:07:30,007 INFO L87 Difference]: Start difference. First operand 782 states and 887 transitions. Second operand has 39 states, 38 states have (on average 5.7894736842105265) internal successors, (220), 34 states have internal predecessors, (220), 11 states have call successors, (67), 7 states have call predecessors, (67), 10 states have return successors, (63), 16 states have call predecessors, (63), 11 states have call successors, (63) [2022-11-20 11:07:37,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:07:37,447 INFO L93 Difference]: Finished difference Result 875 states and 1028 transitions. [2022-11-20 11:07:37,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-11-20 11:07:37,447 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 38 states have (on average 5.7894736842105265) internal successors, (220), 34 states have internal predecessors, (220), 11 states have call successors, (67), 7 states have call predecessors, (67), 10 states have return successors, (63), 16 states have call predecessors, (63), 11 states have call successors, (63) Word has length 205 [2022-11-20 11:07:37,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:07:37,451 INFO L225 Difference]: With dead ends: 875 [2022-11-20 11:07:37,451 INFO L226 Difference]: Without dead ends: 697 [2022-11-20 11:07:37,452 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 527 GetRequests, 454 SyntacticMatches, 5 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1020 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=507, Invalid=4323, Unknown=0, NotChecked=0, Total=4830 [2022-11-20 11:07:37,452 INFO L413 NwaCegarLoop]: 92 mSDtfsCounter, 435 mSDsluCounter, 1185 mSDsCounter, 0 mSdLazyCounter, 3696 mSolverCounterSat, 276 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 437 SdHoareTripleChecker+Valid, 1277 SdHoareTripleChecker+Invalid, 4347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 276 IncrementalHoareTripleChecker+Valid, 3696 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 375 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-11-20 11:07:37,452 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [437 Valid, 1277 Invalid, 4347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [276 Valid, 3696 Invalid, 0 Unknown, 375 Unchecked, 4.5s Time] [2022-11-20 11:07:37,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2022-11-20 11:07:37,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 538. [2022-11-20 11:07:37,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 538 states, 373 states have (on average 1.0563002680965148) internal successors, (394), 379 states have internal predecessors, (394), 98 states have call successors, (98), 59 states have call predecessors, (98), 66 states have return successors, (111), 99 states have call predecessors, (111), 96 states have call successors, (111) [2022-11-20 11:07:37,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 603 transitions. [2022-11-20 11:07:37,559 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 603 transitions. Word has length 205 [2022-11-20 11:07:37,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:07:37,560 INFO L495 AbstractCegarLoop]: Abstraction has 538 states and 603 transitions. [2022-11-20 11:07:37,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 38 states have (on average 5.7894736842105265) internal successors, (220), 34 states have internal predecessors, (220), 11 states have call successors, (67), 7 states have call predecessors, (67), 10 states have return successors, (63), 16 states have call predecessors, (63), 11 states have call successors, (63) [2022-11-20 11:07:37,561 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 603 transitions. [2022-11-20 11:07:37,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2022-11-20 11:07:37,563 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:07:37,563 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-20 11:07:37,583 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2e4569-a56e-416a-a5f9-0e148068e73f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2022-11-20 11:07:37,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2e4569-a56e-416a-a5f9-0e148068e73f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2022-11-20 11:07:37,777 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:07:37,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:07:37,777 INFO L85 PathProgramCache]: Analyzing trace with hash -1803609051, now seen corresponding path program 1 times [2022-11-20 11:07:37,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:07:37,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751025384] [2022-11-20 11:07:37,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:07:37,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:07:37,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:38,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 11:07:38,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:38,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-20 11:07:38,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:38,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 11:07:38,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:38,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:07:38,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:38,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-20 11:07:38,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:38,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-20 11:07:38,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:38,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-20 11:07:38,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:38,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:07:38,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:38,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-20 11:07:38,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:38,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-20 11:07:38,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:38,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-20 11:07:38,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:38,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-20 11:07:38,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:38,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-11-20 11:07:38,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:38,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:07:38,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:38,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:07:38,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:38,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-20 11:07:38,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:38,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-20 11:07:38,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:38,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-20 11:07:38,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:38,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:07:38,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:38,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 11:07:38,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:38,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:07:38,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:38,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-11-20 11:07:38,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:38,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:07:38,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:38,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:07:38,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:38,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 11:07:38,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:38,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-20 11:07:38,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:38,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-11-20 11:07:38,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:38,877 INFO L134 CoverageAnalysis]: Checked inductivity of 336 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2022-11-20 11:07:38,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:07:38,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751025384] [2022-11-20 11:07:38,878 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751025384] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:07:38,878 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:07:38,878 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-20 11:07:38,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114024152] [2022-11-20 11:07:38,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:07:38,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-20 11:07:38,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:07:38,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-20 11:07:38,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2022-11-20 11:07:38,880 INFO L87 Difference]: Start difference. First operand 538 states and 603 transitions. Second operand has 13 states, 12 states have (on average 6.416666666666667) internal successors, (77), 8 states have internal predecessors, (77), 2 states have call successors, (26), 5 states have call predecessors, (26), 2 states have return successors, (25), 2 states have call predecessors, (25), 1 states have call successors, (25) [2022-11-20 11:07:40,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:07:40,464 INFO L93 Difference]: Finished difference Result 564 states and 637 transitions. [2022-11-20 11:07:40,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 11:07:40,465 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 6.416666666666667) internal successors, (77), 8 states have internal predecessors, (77), 2 states have call successors, (26), 5 states have call predecessors, (26), 2 states have return successors, (25), 2 states have call predecessors, (25), 1 states have call successors, (25) Word has length 201 [2022-11-20 11:07:40,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:07:40,469 INFO L225 Difference]: With dead ends: 564 [2022-11-20 11:07:40,469 INFO L226 Difference]: Without dead ends: 562 [2022-11-20 11:07:40,469 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=102, Invalid=360, Unknown=0, NotChecked=0, Total=462 [2022-11-20 11:07:40,470 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 253 mSDsluCounter, 631 mSDsCounter, 0 mSdLazyCounter, 1183 mSolverCounterSat, 165 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 254 SdHoareTripleChecker+Valid, 733 SdHoareTripleChecker+Invalid, 1348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 165 IncrementalHoareTripleChecker+Valid, 1183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:07:40,470 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [254 Valid, 733 Invalid, 1348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [165 Valid, 1183 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-20 11:07:40,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2022-11-20 11:07:40,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 546. [2022-11-20 11:07:40,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 546 states, 380 states have (on average 1.055263157894737) internal successors, (401), 387 states have internal predecessors, (401), 98 states have call successors, (98), 59 states have call predecessors, (98), 67 states have return successors, (114), 99 states have call predecessors, (114), 96 states have call successors, (114) [2022-11-20 11:07:40,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 546 states to 546 states and 613 transitions. [2022-11-20 11:07:40,571 INFO L78 Accepts]: Start accepts. Automaton has 546 states and 613 transitions. Word has length 201 [2022-11-20 11:07:40,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:07:40,571 INFO L495 AbstractCegarLoop]: Abstraction has 546 states and 613 transitions. [2022-11-20 11:07:40,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 6.416666666666667) internal successors, (77), 8 states have internal predecessors, (77), 2 states have call successors, (26), 5 states have call predecessors, (26), 2 states have return successors, (25), 2 states have call predecessors, (25), 1 states have call successors, (25) [2022-11-20 11:07:40,571 INFO L276 IsEmpty]: Start isEmpty. Operand 546 states and 613 transitions. [2022-11-20 11:07:40,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2022-11-20 11:07:40,574 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:07:40,574 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:07:40,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-11-20 11:07:40,575 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:07:40,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:07:40,575 INFO L85 PathProgramCache]: Analyzing trace with hash 1545059881, now seen corresponding path program 1 times [2022-11-20 11:07:40,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:07:40,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147259763] [2022-11-20 11:07:40,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:07:40,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:07:40,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:43,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 11:07:43,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:43,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-20 11:07:43,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:43,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 11:07:43,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:43,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:07:43,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:43,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-20 11:07:43,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:43,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-20 11:07:43,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:43,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-20 11:07:43,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:43,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:07:43,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:43,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-20 11:07:43,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:43,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-20 11:07:43,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:43,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-20 11:07:43,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:43,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-20 11:07:44,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:44,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-11-20 11:07:44,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:44,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:07:44,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:44,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:07:44,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:44,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-20 11:07:44,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:44,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-20 11:07:44,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:44,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-20 11:07:44,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:44,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:07:44,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:44,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 11:07:44,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:44,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:07:44,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:44,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-11-20 11:07:44,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:44,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:07:44,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:44,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:07:44,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:44,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 11:07:44,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:44,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-20 11:07:44,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:44,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-11-20 11:07:44,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:44,531 INFO L134 CoverageAnalysis]: Checked inductivity of 336 backedges. 2 proven. 39 refuted. 0 times theorem prover too weak. 295 trivial. 0 not checked. [2022-11-20 11:07:44,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:07:44,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147259763] [2022-11-20 11:07:44,532 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147259763] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:07:44,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1321061318] [2022-11-20 11:07:44,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:07:44,533 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:07:44,533 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2e4569-a56e-416a-a5f9-0e148068e73f/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:07:44,534 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2e4569-a56e-416a-a5f9-0e148068e73f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:07:44,540 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2e4569-a56e-416a-a5f9-0e148068e73f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-11-20 11:07:45,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:45,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 3005 conjuncts, 77 conjunts are in the unsatisfiable core [2022-11-20 11:07:45,714 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:07:46,368 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 11:07:47,699 INFO L134 CoverageAnalysis]: Checked inductivity of 336 backedges. 38 proven. 41 refuted. 0 times theorem prover too weak. 257 trivial. 0 not checked. [2022-11-20 11:07:47,699 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:07:49,173 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1321061318] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:07:49,173 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:07:49,173 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 34] total 47 [2022-11-20 11:07:49,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456484890] [2022-11-20 11:07:49,173 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:07:49,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-11-20 11:07:49,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:07:49,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-11-20 11:07:49,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=3153, Unknown=0, NotChecked=0, Total=3306 [2022-11-20 11:07:49,176 INFO L87 Difference]: Start difference. First operand 546 states and 613 transitions. Second operand has 47 states, 44 states have (on average 3.5681818181818183) internal successors, (157), 36 states have internal predecessors, (157), 10 states have call successors, (43), 8 states have call predecessors, (43), 11 states have return successors, (41), 14 states have call predecessors, (41), 9 states have call successors, (41) [2022-11-20 11:07:59,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:07:59,914 INFO L93 Difference]: Finished difference Result 810 states and 960 transitions. [2022-11-20 11:07:59,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-11-20 11:07:59,914 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 44 states have (on average 3.5681818181818183) internal successors, (157), 36 states have internal predecessors, (157), 10 states have call successors, (43), 8 states have call predecessors, (43), 11 states have return successors, (41), 14 states have call predecessors, (41), 9 states have call successors, (41) Word has length 201 [2022-11-20 11:07:59,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:07:59,917 INFO L225 Difference]: With dead ends: 810 [2022-11-20 11:07:59,917 INFO L226 Difference]: Without dead ends: 612 [2022-11-20 11:07:59,919 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 355 GetRequests, 247 SyntacticMatches, 2 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2123 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=906, Invalid=10650, Unknown=0, NotChecked=0, Total=11556 [2022-11-20 11:07:59,919 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 384 mSDsluCounter, 2348 mSDsCounter, 0 mSdLazyCounter, 6664 mSolverCounterSat, 234 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 388 SdHoareTripleChecker+Valid, 2447 SdHoareTripleChecker+Invalid, 8728 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 234 IncrementalHoareTripleChecker+Valid, 6664 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1830 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:07:59,920 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [388 Valid, 2447 Invalid, 8728 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [234 Valid, 6664 Invalid, 0 Unknown, 1830 Unchecked, 6.0s Time] [2022-11-20 11:07:59,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 612 states. [2022-11-20 11:08:00,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 612 to 485. [2022-11-20 11:08:00,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 485 states, 339 states have (on average 1.0589970501474926) internal successors, (359), 344 states have internal predecessors, (359), 87 states have call successors, (87), 52 states have call predecessors, (87), 58 states have return successors, (97), 88 states have call predecessors, (97), 85 states have call successors, (97) [2022-11-20 11:08:00,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 485 states to 485 states and 543 transitions. [2022-11-20 11:08:00,004 INFO L78 Accepts]: Start accepts. Automaton has 485 states and 543 transitions. Word has length 201 [2022-11-20 11:08:00,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:08:00,004 INFO L495 AbstractCegarLoop]: Abstraction has 485 states and 543 transitions. [2022-11-20 11:08:00,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 44 states have (on average 3.5681818181818183) internal successors, (157), 36 states have internal predecessors, (157), 10 states have call successors, (43), 8 states have call predecessors, (43), 11 states have return successors, (41), 14 states have call predecessors, (41), 9 states have call successors, (41) [2022-11-20 11:08:00,005 INFO L276 IsEmpty]: Start isEmpty. Operand 485 states and 543 transitions. [2022-11-20 11:08:00,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2022-11-20 11:08:00,008 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:08:00,008 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:08:00,022 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2e4569-a56e-416a-a5f9-0e148068e73f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2022-11-20 11:08:00,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2e4569-a56e-416a-a5f9-0e148068e73f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2022-11-20 11:08:00,222 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:08:00,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:08:00,222 INFO L85 PathProgramCache]: Analyzing trace with hash -1182879972, now seen corresponding path program 1 times [2022-11-20 11:08:00,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:08:00,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766462188] [2022-11-20 11:08:00,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:08:00,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:08:00,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:08:03,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 11:08:03,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:08:03,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-20 11:08:03,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:08:03,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 11:08:03,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:08:03,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:08:03,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:08:03,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-20 11:08:03,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:08:04,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-20 11:08:04,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:08:04,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-20 11:08:04,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:08:04,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:08:04,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:08:04,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-20 11:08:04,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:08:04,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-20 11:08:04,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:08:04,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-20 11:08:04,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:08:04,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-20 11:08:04,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:08:04,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-11-20 11:08:04,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:08:04,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:08:04,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:08:04,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:08:04,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:08:04,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-20 11:08:04,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:08:04,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-20 11:08:04,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:08:04,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-20 11:08:04,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:08:04,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:08:04,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:08:04,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 11:08:04,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:08:04,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:08:04,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:08:04,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-11-20 11:08:04,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:08:04,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:08:04,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:08:05,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:08:05,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:08:05,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 11:08:05,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:08:05,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-20 11:08:05,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:08:05,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-11-20 11:08:05,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:08:05,082 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 3 proven. 32 refuted. 0 times theorem prover too weak. 298 trivial. 0 not checked. [2022-11-20 11:08:05,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:08:05,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766462188] [2022-11-20 11:08:05,083 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766462188] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:08:05,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [233082355] [2022-11-20 11:08:05,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:08:05,084 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:08:05,084 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2e4569-a56e-416a-a5f9-0e148068e73f/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:08:05,085 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2e4569-a56e-416a-a5f9-0e148068e73f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:08:05,121 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2e4569-a56e-416a-a5f9-0e148068e73f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-11-20 11:08:06,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:08:06,201 INFO L263 TraceCheckSpWp]: Trace formula consists of 3012 conjuncts, 56 conjunts are in the unsatisfiable core [2022-11-20 11:08:06,208 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:08:06,349 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-20 11:08:08,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:08:08,495 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 25 [2022-11-20 11:08:08,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:08:08,951 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 25 [2022-11-20 11:08:09,027 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 26 treesize of output 14 [2022-11-20 11:08:09,169 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 100 proven. 146 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2022-11-20 11:08:09,169 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:08:09,834 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [233082355] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:08:09,835 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:08:09,835 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 20] total 36 [2022-11-20 11:08:09,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070528610] [2022-11-20 11:08:09,835 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:08:09,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-11-20 11:08:09,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:08:09,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-11-20 11:08:09,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=1351, Unknown=13, NotChecked=0, Total=1482 [2022-11-20 11:08:09,837 INFO L87 Difference]: Start difference. First operand 485 states and 543 transitions. Second operand has 36 states, 34 states have (on average 5.382352941176471) internal successors, (183), 31 states have internal predecessors, (183), 17 states have call successors, (49), 7 states have call predecessors, (49), 9 states have return successors, (46), 18 states have call predecessors, (46), 17 states have call successors, (46) [2022-11-20 11:08:15,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:08:15,634 INFO L93 Difference]: Finished difference Result 601 states and 682 transitions. [2022-11-20 11:08:15,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-20 11:08:15,634 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 34 states have (on average 5.382352941176471) internal successors, (183), 31 states have internal predecessors, (183), 17 states have call successors, (49), 7 states have call predecessors, (49), 9 states have return successors, (46), 18 states have call predecessors, (46), 17 states have call successors, (46) Word has length 201 [2022-11-20 11:08:15,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:08:15,637 INFO L225 Difference]: With dead ends: 601 [2022-11-20 11:08:15,638 INFO L226 Difference]: Without dead ends: 500 [2022-11-20 11:08:15,639 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 365 GetRequests, 284 SyntacticMatches, 19 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1240 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=352, Invalid=3662, Unknown=18, NotChecked=0, Total=4032 [2022-11-20 11:08:15,640 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 512 mSDsluCounter, 1726 mSDsCounter, 0 mSdLazyCounter, 3127 mSolverCounterSat, 326 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 560 SdHoareTripleChecker+Valid, 1884 SdHoareTripleChecker+Invalid, 4324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 326 IncrementalHoareTripleChecker+Valid, 3127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 871 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:08:15,640 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [560 Valid, 1884 Invalid, 4324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [326 Valid, 3127 Invalid, 0 Unknown, 871 Unchecked, 4.0s Time] [2022-11-20 11:08:15,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2022-11-20 11:08:15,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 474. [2022-11-20 11:08:15,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 474 states, 332 states have (on average 1.0542168674698795) internal successors, (350), 336 states have internal predecessors, (350), 85 states have call successors, (85), 52 states have call predecessors, (85), 56 states have return successors, (92), 85 states have call predecessors, (92), 83 states have call successors, (92) [2022-11-20 11:08:15,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 474 states to 474 states and 527 transitions. [2022-11-20 11:08:15,744 INFO L78 Accepts]: Start accepts. Automaton has 474 states and 527 transitions. Word has length 201 [2022-11-20 11:08:15,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:08:15,745 INFO L495 AbstractCegarLoop]: Abstraction has 474 states and 527 transitions. [2022-11-20 11:08:15,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 34 states have (on average 5.382352941176471) internal successors, (183), 31 states have internal predecessors, (183), 17 states have call successors, (49), 7 states have call predecessors, (49), 9 states have return successors, (46), 18 states have call predecessors, (46), 17 states have call successors, (46) [2022-11-20 11:08:15,746 INFO L276 IsEmpty]: Start isEmpty. Operand 474 states and 527 transitions. [2022-11-20 11:08:15,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2022-11-20 11:08:15,748 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:08:15,748 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-20 11:08:15,764 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2e4569-a56e-416a-a5f9-0e148068e73f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2022-11-20 11:08:15,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2e4569-a56e-416a-a5f9-0e148068e73f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2022-11-20 11:08:15,959 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:08:15,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:08:15,959 INFO L85 PathProgramCache]: Analyzing trace with hash 380802995, now seen corresponding path program 1 times [2022-11-20 11:08:15,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:08:15,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411626628] [2022-11-20 11:08:15,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:08:15,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:08:16,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:08:18,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 11:08:18,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:08:18,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-20 11:08:18,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:08:18,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 11:08:18,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:08:18,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:08:18,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:08:18,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-20 11:08:18,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:08:18,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-20 11:08:18,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:08:18,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-20 11:08:18,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:08:18,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:08:18,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:08:18,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-20 11:08:18,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:08:18,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-20 11:08:18,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:08:18,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-20 11:08:18,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:08:18,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-11-20 11:08:18,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:08:18,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-11-20 11:08:18,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:08:18,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-11-20 11:08:18,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:08:18,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:08:18,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:08:18,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:08:18,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:08:18,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-20 11:08:18,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:08:18,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-20 11:08:18,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:08:18,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-20 11:08:18,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:08:18,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:08:18,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:08:18,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 11:08:18,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:08:18,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:08:18,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:08:18,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-11-20 11:08:18,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:08:18,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:08:18,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:08:19,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:08:19,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:08:19,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 11:08:19,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:08:19,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-20 11:08:19,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:08:19,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-11-20 11:08:19,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:08:19,282 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 30 proven. 7 refuted. 0 times theorem prover too weak. 343 trivial. 0 not checked. [2022-11-20 11:08:19,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:08:19,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411626628] [2022-11-20 11:08:19,283 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411626628] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:08:19,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [690147921] [2022-11-20 11:08:19,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:08:19,283 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:08:19,283 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2e4569-a56e-416a-a5f9-0e148068e73f/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:08:19,284 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2e4569-a56e-416a-a5f9-0e148068e73f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:08:19,287 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2e4569-a56e-416a-a5f9-0e148068e73f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-11-20 11:08:20,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:08:20,441 INFO L263 TraceCheckSpWp]: Trace formula consists of 3040 conjuncts, 69 conjunts are in the unsatisfiable core [2022-11-20 11:08:20,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:08:20,452 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 [2022-11-20 11:08:20,797 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-20 11:08:20,797 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 [2022-11-20 11:08:21,446 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-20 11:08:23,680 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((|v_ULTIMATE.start_aws_byte_buf_init_copy_harness_~#src~0#1.base_BEFORE_CALL_155| Int)) (not (= (mod (select (select |c_#memory_int| |v_ULTIMATE.start_aws_byte_buf_init_copy_harness_~#src~0#1.base_BEFORE_CALL_155|) 0) 18446744073709551616) 0))) (exists ((|bounded_malloc_#res.base| Int) (v_ArrVal_6106 Int)) (and (= |c_#valid| (store |c_old(#valid)| |bounded_malloc_#res.base| v_ArrVal_6106)) (< |bounded_malloc_#res.base| |c_#StackHeapBarrier|)))) is different from true [2022-11-20 11:08:23,722 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-20 11:08:23,722 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 1 case distinctions, treesize of input 12 treesize of output 18 [2022-11-20 11:08:26,217 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-20 11:08:26,217 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-11-20 11:08:26,300 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 17 treesize of output 19 [2022-11-20 11:08:28,512 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 17 treesize of output 19 [2022-11-20 11:08:35,603 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 241 proven. 53 refuted. 0 times theorem prover too weak. 84 trivial. 2 not checked. [2022-11-20 11:08:35,603 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:08:36,088 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6108 (Array Int Int))) (not (= (mod (select (select (store |c_#memory_int| |c_ULTIMATE.start_save_byte_from_array_~storage#1.base| v_ArrVal_6108) |c_ULTIMATE.start_aws_byte_buf_init_copy_harness_~#src~0#1.base|) |c_ULTIMATE.start_aws_byte_buf_init_copy_harness_~#src~0#1.offset|) 18446744073709551616) 0))) is different from false [2022-11-20 11:08:36,096 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [690147921] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:08:36,096 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:08:36,096 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 22] total 36 [2022-11-20 11:08:36,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001060239] [2022-11-20 11:08:36,096 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:08:36,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-11-20 11:08:36,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:08:36,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-11-20 11:08:36,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=1270, Unknown=8, NotChecked=146, Total=1560 [2022-11-20 11:08:36,099 INFO L87 Difference]: Start difference. First operand 474 states and 527 transitions. Second operand has 36 states, 35 states have (on average 6.114285714285714) internal successors, (214), 33 states have internal predecessors, (214), 11 states have call successors, (55), 11 states have call predecessors, (55), 13 states have return successors, (54), 12 states have call predecessors, (54), 11 states have call successors, (54) [2022-11-20 11:08:40,823 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((|v_ULTIMATE.start_aws_byte_buf_init_copy_harness_~#src~0#1.base_BEFORE_CALL_155| Int)) (not (= (mod (select (select |c_#memory_int| |v_ULTIMATE.start_aws_byte_buf_init_copy_harness_~#src~0#1.base_BEFORE_CALL_155|) 0) 18446744073709551616) 0))) (exists ((|bounded_malloc_#res.base| Int)) (and (exists ((v_ArrVal_6105 Int)) (= |c_#valid| (store |c_old(#valid)| |bounded_malloc_#res.base| v_ArrVal_6105))) (= (select |c_old(#valid)| |bounded_malloc_#res.base|) 0))) (exists ((|bounded_malloc_#res.base| Int) (v_ArrVal_6106 Int)) (and (= |c_#valid| (store |c_old(#valid)| |bounded_malloc_#res.base| v_ArrVal_6106)) (< |bounded_malloc_#res.base| |c_#StackHeapBarrier|)))) is different from true [2022-11-20 11:08:44,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:08:44,772 INFO L93 Difference]: Finished difference Result 806 states and 929 transitions. [2022-11-20 11:08:44,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-11-20 11:08:44,773 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 35 states have (on average 6.114285714285714) internal successors, (214), 33 states have internal predecessors, (214), 11 states have call successors, (55), 11 states have call predecessors, (55), 13 states have return successors, (54), 12 states have call predecessors, (54), 11 states have call successors, (54) Word has length 206 [2022-11-20 11:08:44,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:08:44,775 INFO L225 Difference]: With dead ends: 806 [2022-11-20 11:08:44,775 INFO L226 Difference]: Without dead ends: 614 [2022-11-20 11:08:44,776 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 452 GetRequests, 372 SyntacticMatches, 14 SemanticMatches, 66 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 1124 ImplicationChecksByTransitivity, 20.9s TimeCoverageRelationStatistics Valid=563, Invalid=3594, Unknown=15, NotChecked=384, Total=4556 [2022-11-20 11:08:44,777 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 301 mSDsluCounter, 864 mSDsCounter, 0 mSdLazyCounter, 1713 mSolverCounterSat, 244 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 317 SdHoareTripleChecker+Valid, 970 SdHoareTripleChecker+Invalid, 3346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 244 IncrementalHoareTripleChecker+Valid, 1713 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1389 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-20 11:08:44,777 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [317 Valid, 970 Invalid, 3346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [244 Valid, 1713 Invalid, 0 Unknown, 1389 Unchecked, 2.4s Time] [2022-11-20 11:08:44,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 614 states. [2022-11-20 11:08:44,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 614 to 563. [2022-11-20 11:08:44,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 563 states, 400 states have (on average 1.0475) internal successors, (419), 406 states have internal predecessors, (419), 98 states have call successors, (98), 59 states have call predecessors, (98), 64 states have return successors, (108), 97 states have call predecessors, (108), 96 states have call successors, (108) [2022-11-20 11:08:44,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 625 transitions. [2022-11-20 11:08:44,875 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 625 transitions. Word has length 206 [2022-11-20 11:08:44,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:08:44,875 INFO L495 AbstractCegarLoop]: Abstraction has 563 states and 625 transitions. [2022-11-20 11:08:44,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 35 states have (on average 6.114285714285714) internal successors, (214), 33 states have internal predecessors, (214), 11 states have call successors, (55), 11 states have call predecessors, (55), 13 states have return successors, (54), 12 states have call predecessors, (54), 11 states have call successors, (54) [2022-11-20 11:08:44,876 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 625 transitions. [2022-11-20 11:08:44,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2022-11-20 11:08:44,879 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:08:44,879 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 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] [2022-11-20 11:08:44,894 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2e4569-a56e-416a-a5f9-0e148068e73f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2022-11-20 11:08:45,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2e4569-a56e-416a-a5f9-0e148068e73f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:08:45,093 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:08:45,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:08:45,094 INFO L85 PathProgramCache]: Analyzing trace with hash -657781579, now seen corresponding path program 1 times [2022-11-20 11:08:45,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:08:45,095 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179463677] [2022-11-20 11:08:45,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:08:45,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:08:45,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:08:47,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 11:08:47,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:08:47,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-20 11:08:47,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:08:47,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 11:08:47,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:08:47,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:08:47,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:08:47,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-20 11:08:47,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:08:47,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-20 11:08:47,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:08:47,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-20 11:08:47,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:08:47,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:08:47,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:08:47,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-20 11:08:47,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:08:47,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-20 11:08:47,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:08:47,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-20 11:08:47,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:08:47,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-11-20 11:08:47,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:08:47,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-11-20 11:08:47,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:08:47,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-11-20 11:08:47,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:08:47,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:08:47,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:08:47,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:08:47,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:08:47,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-20 11:08:47,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:08:47,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-20 11:08:47,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:08:47,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-20 11:08:47,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:08:47,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:08:47,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:08:47,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 11:08:47,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:08:47,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:08:47,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:08:47,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-11-20 11:08:47,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:08:48,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:08:48,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:08:48,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:08:48,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:08:48,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 11:08:48,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:08:48,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-20 11:08:48,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:08:48,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-11-20 11:08:48,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:08:48,333 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 18 proven. 16 refuted. 0 times theorem prover too weak. 346 trivial. 0 not checked. [2022-11-20 11:08:48,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:08:48,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179463677] [2022-11-20 11:08:48,333 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179463677] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:08:48,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1577081112] [2022-11-20 11:08:48,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:08:48,334 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:08:48,334 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2e4569-a56e-416a-a5f9-0e148068e73f/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:08:48,335 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2e4569-a56e-416a-a5f9-0e148068e73f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:08:48,336 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2e4569-a56e-416a-a5f9-0e148068e73f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-11-20 11:08:49,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:08:49,492 INFO L263 TraceCheckSpWp]: Trace formula consists of 3045 conjuncts, 89 conjunts are in the unsatisfiable core [2022-11-20 11:08:49,503 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:08:50,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:08:50,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:08:50,237 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 58 [2022-11-20 11:09:08,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:09:08,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:09:08,892 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 11:09:08,892 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 57 treesize of output 55 [2022-11-20 11:09:20,241 WARN L859 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_byte_buf_init_copy_~dest#1.base_BEFORE_CALL_32| Int) (|v_ULTIMATE.start_aws_byte_buf_init_copy_~dest#1.offset_BEFORE_CALL_29| Int) (|ULTIMATE.start_aws_byte_buf_init_copy_~src#1.base| Int)) (let ((.cse2 (select |c_#memory_int| |v_ULTIMATE.start_aws_byte_buf_init_copy_~dest#1.base_BEFORE_CALL_32|)) (.cse3 (select |c_#memory_int| |ULTIMATE.start_aws_byte_buf_init_copy_~src#1.base|))) (let ((.cse1 (select .cse3 16)) (.cse0 (select .cse2 |v_ULTIMATE.start_aws_byte_buf_init_copy_~dest#1.offset_BEFORE_CALL_29|))) (and (<= (mod .cse0 18446744073709551616) (mod .cse1 18446744073709551616)) (= (select .cse2 (+ |v_ULTIMATE.start_aws_byte_buf_init_copy_~dest#1.offset_BEFORE_CALL_29| 16)) .cse1) (<= (+ |v_ULTIMATE.start_aws_byte_buf_init_copy_~dest#1.base_BEFORE_CALL_32| 2) |ULTIMATE.start_aws_byte_buf_init_copy_~src#1.base|) (= .cse0 (select .cse3 0)))))) is different from true [2022-11-20 11:09:25,838 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 141 proven. 43 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2022-11-20 11:09:25,839 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:09:30,691 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1577081112] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:09:30,692 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:09:30,692 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 24] total 41 [2022-11-20 11:09:30,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586995064] [2022-11-20 11:09:30,692 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:09:30,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-11-20 11:09:30,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:09:30,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-11-20 11:09:30,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=1909, Unknown=16, NotChecked=88, Total=2162 [2022-11-20 11:09:30,695 INFO L87 Difference]: Start difference. First operand 563 states and 625 transitions. Second operand has 41 states, 34 states have (on average 4.970588235294118) internal successors, (169), 35 states have internal predecessors, (169), 18 states have call successors, (53), 8 states have call predecessors, (53), 9 states have return successors, (52), 18 states have call predecessors, (52), 18 states have call successors, (52) [2022-11-20 11:11:17,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:11:17,999 INFO L93 Difference]: Finished difference Result 703 states and 796 transitions. [2022-11-20 11:11:18,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-11-20 11:11:18,000 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 34 states have (on average 4.970588235294118) internal successors, (169), 35 states have internal predecessors, (169), 18 states have call successors, (53), 8 states have call predecessors, (53), 9 states have return successors, (52), 18 states have call predecessors, (52), 18 states have call successors, (52) Word has length 206 [2022-11-20 11:11:18,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:11:18,003 INFO L225 Difference]: With dead ends: 703 [2022-11-20 11:11:18,003 INFO L226 Difference]: Without dead ends: 580 [2022-11-20 11:11:18,005 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 347 GetRequests, 265 SyntacticMatches, 2 SemanticMatches, 80 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1491 ImplicationChecksByTransitivity, 142.0s TimeCoverageRelationStatistics Valid=521, Invalid=5901, Unknown=62, NotChecked=158, Total=6642 [2022-11-20 11:11:18,005 INFO L413 NwaCegarLoop]: 137 mSDtfsCounter, 316 mSDsluCounter, 2331 mSDsCounter, 0 mSdLazyCounter, 3053 mSolverCounterSat, 195 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 318 SdHoareTripleChecker+Valid, 2468 SdHoareTripleChecker+Invalid, 3933 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 195 IncrementalHoareTripleChecker+Valid, 3053 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 685 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:11:18,006 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [318 Valid, 2468 Invalid, 3933 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [195 Valid, 3053 Invalid, 0 Unknown, 685 Unchecked, 4.1s Time] [2022-11-20 11:11:18,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2022-11-20 11:11:18,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 548. [2022-11-20 11:11:18,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 548 states, 386 states have (on average 1.0466321243523315) internal successors, (404), 392 states have internal predecessors, (404), 98 states have call successors, (98), 59 states have call predecessors, (98), 63 states have return successors, (106), 96 states have call predecessors, (106), 96 states have call successors, (106) [2022-11-20 11:11:18,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 548 states to 548 states and 608 transitions. [2022-11-20 11:11:18,090 INFO L78 Accepts]: Start accepts. Automaton has 548 states and 608 transitions. Word has length 206 [2022-11-20 11:11:18,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:11:18,090 INFO L495 AbstractCegarLoop]: Abstraction has 548 states and 608 transitions. [2022-11-20 11:11:18,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 34 states have (on average 4.970588235294118) internal successors, (169), 35 states have internal predecessors, (169), 18 states have call successors, (53), 8 states have call predecessors, (53), 9 states have return successors, (52), 18 states have call predecessors, (52), 18 states have call successors, (52) [2022-11-20 11:11:18,090 INFO L276 IsEmpty]: Start isEmpty. Operand 548 states and 608 transitions. [2022-11-20 11:11:18,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2022-11-20 11:11:18,092 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:11:18,093 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 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] [2022-11-20 11:11:18,103 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2e4569-a56e-416a-a5f9-0e148068e73f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2022-11-20 11:11:18,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38,33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2e4569-a56e-416a-a5f9-0e148068e73f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:11:18,295 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:11:18,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:11:18,295 INFO L85 PathProgramCache]: Analyzing trace with hash -903976093, now seen corresponding path program 1 times [2022-11-20 11:11:18,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:11:18,295 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862326008] [2022-11-20 11:11:18,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:11:18,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:11:18,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:20,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 11:11:20,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:20,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-20 11:11:20,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:20,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 11:11:20,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:20,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-20 11:11:20,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:20,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:11:20,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:20,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-20 11:11:20,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:20,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-20 11:11:20,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:20,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-20 11:11:20,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:20,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:11:20,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:20,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-20 11:11:20,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:20,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-20 11:11:20,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:20,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-11-20 11:11:20,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:20,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-11-20 11:11:20,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:20,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-11-20 11:11:20,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:21,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-11-20 11:11:21,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:21,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:11:21,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:21,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:11:21,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:21,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-20 11:11:21,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:21,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-20 11:11:21,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:21,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-20 11:11:21,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:21,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:11:21,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:21,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 11:11:21,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:21,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:11:21,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:21,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-11-20 11:11:21,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:21,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:11:21,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:21,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:11:21,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:21,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 11:11:21,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:21,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-20 11:11:21,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:21,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2022-11-20 11:11:21,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:21,791 INFO L134 CoverageAnalysis]: Checked inductivity of 387 backedges. 18 proven. 17 refuted. 0 times theorem prover too weak. 352 trivial. 0 not checked. [2022-11-20 11:11:21,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:11:21,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862326008] [2022-11-20 11:11:21,792 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862326008] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:11:21,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [5139532] [2022-11-20 11:11:21,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:11:21,793 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:11:21,793 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2e4569-a56e-416a-a5f9-0e148068e73f/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:11:21,795 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2e4569-a56e-416a-a5f9-0e148068e73f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:11:21,818 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2e4569-a56e-416a-a5f9-0e148068e73f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2022-11-20 11:11:22,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:22,912 INFO L263 TraceCheckSpWp]: Trace formula consists of 3075 conjuncts, 47 conjunts are in the unsatisfiable core [2022-11-20 11:11:22,919 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:11:23,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:11:23,550 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 25 [2022-11-20 11:11:23,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:11:23,992 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 25 [2022-11-20 11:11:24,071 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 26 treesize of output 14 [2022-11-20 11:11:24,227 INFO L134 CoverageAnalysis]: Checked inductivity of 387 backedges. 149 proven. 39 refuted. 0 times theorem prover too weak. 199 trivial. 0 not checked. [2022-11-20 11:11:24,227 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:11:24,617 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6502 (Array Int Int))) (let ((.cse0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_aws_byte_buf_init_copy_~dest#1.base| v_ArrVal_6502) |c_ULTIMATE.start_aws_byte_buf_init_copy_~src#1.base|) |c_ULTIMATE.start_aws_byte_buf_init_copy_~src#1.offset|))) (<= .cse0 (* (div .cse0 18446744073709551616) 18446744073709551616)))) is different from false [2022-11-20 11:11:24,648 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [5139532] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:11:24,648 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:11:24,648 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 18] total 35 [2022-11-20 11:11:24,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048799786] [2022-11-20 11:11:24,649 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:11:24,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-11-20 11:11:24,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:11:24,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-11-20 11:11:24,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=1225, Unknown=1, NotChecked=70, Total=1406 [2022-11-20 11:11:24,651 INFO L87 Difference]: Start difference. First operand 548 states and 608 transitions. Second operand has 35 states, 31 states have (on average 5.548387096774194) internal successors, (172), 30 states have internal predecessors, (172), 14 states have call successors, (52), 6 states have call predecessors, (52), 9 states have return successors, (51), 16 states have call predecessors, (51), 14 states have call successors, (51) [2022-11-20 11:11:31,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:11:31,131 INFO L93 Difference]: Finished difference Result 731 states and 838 transitions. [2022-11-20 11:11:31,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-20 11:11:31,132 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 31 states have (on average 5.548387096774194) internal successors, (172), 30 states have internal predecessors, (172), 14 states have call successors, (52), 6 states have call predecessors, (52), 9 states have return successors, (51), 16 states have call predecessors, (51), 14 states have call successors, (51) Word has length 213 [2022-11-20 11:11:31,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:11:31,137 INFO L225 Difference]: With dead ends: 731 [2022-11-20 11:11:31,137 INFO L226 Difference]: Without dead ends: 638 [2022-11-20 11:11:31,139 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 371 GetRequests, 306 SyntacticMatches, 6 SemanticMatches, 59 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 813 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=306, Invalid=3236, Unknown=2, NotChecked=116, Total=3660 [2022-11-20 11:11:31,140 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 436 mSDsluCounter, 2483 mSDsCounter, 0 mSdLazyCounter, 4313 mSolverCounterSat, 302 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 456 SdHoareTripleChecker+Valid, 2631 SdHoareTripleChecker+Invalid, 4926 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 302 IncrementalHoareTripleChecker+Valid, 4313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 311 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:11:31,140 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [456 Valid, 2631 Invalid, 4926 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [302 Valid, 4313 Invalid, 0 Unknown, 311 Unchecked, 5.1s Time] [2022-11-20 11:11:31,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 638 states. [2022-11-20 11:11:31,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 638 to 587. [2022-11-20 11:11:31,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 587 states, 410 states have (on average 1.0439024390243903) internal successors, (428), 416 states have internal predecessors, (428), 106 states have call successors, (106), 66 states have call predecessors, (106), 70 states have return successors, (112), 104 states have call predecessors, (112), 104 states have call successors, (112) [2022-11-20 11:11:31,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 587 states to 587 states and 646 transitions. [2022-11-20 11:11:31,242 INFO L78 Accepts]: Start accepts. Automaton has 587 states and 646 transitions. Word has length 213 [2022-11-20 11:11:31,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:11:31,242 INFO L495 AbstractCegarLoop]: Abstraction has 587 states and 646 transitions. [2022-11-20 11:11:31,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 31 states have (on average 5.548387096774194) internal successors, (172), 30 states have internal predecessors, (172), 14 states have call successors, (52), 6 states have call predecessors, (52), 9 states have return successors, (51), 16 states have call predecessors, (51), 14 states have call successors, (51) [2022-11-20 11:11:31,243 INFO L276 IsEmpty]: Start isEmpty. Operand 587 states and 646 transitions. [2022-11-20 11:11:31,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2022-11-20 11:11:31,246 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:11:31,246 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 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] [2022-11-20 11:11:31,259 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2e4569-a56e-416a-a5f9-0e148068e73f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2022-11-20 11:11:31,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2e4569-a56e-416a-a5f9-0e148068e73f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2022-11-20 11:11:31,459 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:11:31,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:11:31,459 INFO L85 PathProgramCache]: Analyzing trace with hash 1743628261, now seen corresponding path program 1 times [2022-11-20 11:11:31,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:11:31,459 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609408873] [2022-11-20 11:11:31,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:11:31,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:11:31,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:35,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 11:11:35,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:35,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-20 11:11:35,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:35,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 11:11:35,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:35,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-20 11:11:35,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:35,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:11:35,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:35,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-20 11:11:35,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:35,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-20 11:11:35,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:35,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-20 11:11:35,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:35,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:11:35,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:35,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-20 11:11:35,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:35,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-20 11:11:35,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:35,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-11-20 11:11:35,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:35,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-11-20 11:11:35,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:35,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-11-20 11:11:35,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:35,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-11-20 11:11:35,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:35,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:11:35,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:35,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:11:35,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:35,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-20 11:11:35,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:35,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-20 11:11:35,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:35,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-20 11:11:35,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:35,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:11:35,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:35,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 11:11:35,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:35,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:11:35,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:35,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-11-20 11:11:35,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:36,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:11:36,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:36,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:11:36,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:36,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 11:11:36,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:36,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-20 11:11:36,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:36,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2022-11-20 11:11:36,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:37,481 INFO L134 CoverageAnalysis]: Checked inductivity of 387 backedges. 36 proven. 3 refuted. 0 times theorem prover too weak. 348 trivial. 0 not checked. [2022-11-20 11:11:37,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:11:37,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609408873] [2022-11-20 11:11:37,482 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609408873] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:11:37,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [176102681] [2022-11-20 11:11:37,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:11:37,482 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:11:37,483 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2e4569-a56e-416a-a5f9-0e148068e73f/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:11:37,484 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2e4569-a56e-416a-a5f9-0e148068e73f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:11:37,486 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2e4569-a56e-416a-a5f9-0e148068e73f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2022-11-20 11:11:38,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:38,690 INFO L263 TraceCheckSpWp]: Trace formula consists of 3080 conjuncts, 135 conjunts are in the unsatisfiable core [2022-11-20 11:11:38,699 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:11:38,844 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 [2022-11-20 11:11:39,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:11:39,401 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 12 treesize of output 14 [2022-11-20 11:11:41,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:11:41,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:11:41,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:11:41,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:11:41,325 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 48 [2022-11-20 11:11:41,473 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-20 11:11:51,700 WARN L859 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_byte_buf_init_copy_~dest#1.base_BEFORE_CALL_42| Int) (|v_ULTIMATE.start_aws_byte_buf_init_copy_~src#1.base_BEFORE_CALL_92| Int)) (let ((.cse0 (select (select |c_#memory_int| |v_ULTIMATE.start_aws_byte_buf_init_copy_~src#1.base_BEFORE_CALL_92|) 0))) (and (= (select (select |c_#memory_int| |v_ULTIMATE.start_aws_byte_buf_init_copy_~dest#1.base_BEFORE_CALL_42|) 0) .cse0) (<= (+ |v_ULTIMATE.start_aws_byte_buf_init_copy_~dest#1.base_BEFORE_CALL_42| 2) |v_ULTIMATE.start_aws_byte_buf_init_copy_~src#1.base_BEFORE_CALL_92|) (not (= (mod .cse0 18446744073709551616) 0))))) is different from true [2022-11-20 11:11:53,552 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-20 11:11:53,552 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-20 11:11:53,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:11:53,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:11:53,816 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 33 [2022-11-20 11:11:53,834 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 11:11:53,994 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 20 treesize of output 8 [2022-11-20 11:11:54,432 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_6723 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |c_memcpy_impl_#in~dst.base| v_ArrVal_6723))) is different from true [2022-11-20 11:11:54,449 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_6723 (Array Int Int))) (= (store |c_old(#memory_int)| |c_my_memcpy_#in~dst.base| v_ArrVal_6723) |c_#memory_int|)) is different from true [2022-11-20 11:11:54,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:11:54,487 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-20 11:11:54,488 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 35 [2022-11-20 11:11:54,502 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2022-11-20 11:12:05,934 INFO L134 CoverageAnalysis]: Checked inductivity of 387 backedges. 147 proven. 53 refuted. 36 times theorem prover too weak. 111 trivial. 40 not checked. [2022-11-20 11:12:05,935 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:12:09,102 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [176102681] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:12:09,102 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:12:09,102 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 38] total 72 [2022-11-20 11:12:09,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763400407] [2022-11-20 11:12:09,103 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:12:09,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2022-11-20 11:12:09,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:12:09,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2022-11-20 11:12:09,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=275, Invalid=5111, Unknown=28, NotChecked=438, Total=5852 [2022-11-20 11:12:09,105 INFO L87 Difference]: Start difference. First operand 587 states and 646 transitions. Second operand has 72 states, 66 states have (on average 2.8636363636363638) internal successors, (189), 59 states have internal predecessors, (189), 22 states have call successors, (56), 11 states have call predecessors, (56), 19 states have return successors, (55), 28 states have call predecessors, (55), 21 states have call successors, (55)