./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_clean_up_secure_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f 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_a357e79c-3ed0-4232-b8ad-4e429590df33/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a357e79c-3ed0-4232-b8ad-4e429590df33/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a357e79c-3ed0-4232-b8ad-4e429590df33/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a357e79c-3ed0-4232-b8ad-4e429590df33/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_clean_up_secure_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a357e79c-3ed0-4232-b8ad-4e429590df33/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a357e79c-3ed0-4232-b8ad-4e429590df33/bin/uautomizer-tPACEb0tL8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash e401a4e4197b43467958a92870f8195ba22195c146137fa78352c627ea2eeb40 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-e04fb08 [2022-11-16 10:56:32,229 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 10:56:32,232 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 10:56:32,260 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 10:56:32,262 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 10:56:32,263 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 10:56:32,265 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 10:56:32,267 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 10:56:32,269 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 10:56:32,270 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 10:56:32,271 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 10:56:32,272 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 10:56:32,273 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 10:56:32,274 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 10:56:32,275 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 10:56:32,277 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 10:56:32,283 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 10:56:32,287 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 10:56:32,289 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 10:56:32,291 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 10:56:32,293 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 10:56:32,295 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 10:56:32,297 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 10:56:32,298 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 10:56:32,303 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 10:56:32,303 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 10:56:32,304 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 10:56:32,305 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 10:56:32,306 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 10:56:32,307 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 10:56:32,308 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 10:56:32,309 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 10:56:32,310 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 10:56:32,311 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 10:56:32,312 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 10:56:32,313 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 10:56:32,314 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 10:56:32,314 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 10:56:32,315 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 10:56:32,316 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 10:56:32,317 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 10:56:32,319 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a357e79c-3ed0-4232-b8ad-4e429590df33/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-16 10:56:32,346 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 10:56:32,346 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 10:56:32,347 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 10:56:32,347 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 10:56:32,348 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 10:56:32,348 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 10:56:32,349 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 10:56:32,349 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 10:56:32,349 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 10:56:32,350 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 10:56:32,350 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 10:56:32,350 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 10:56:32,351 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 10:56:32,351 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 10:56:32,351 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 10:56:32,351 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 10:56:32,352 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 10:56:32,352 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 10:56:32,352 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 10:56:32,353 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 10:56:32,353 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 10:56:32,353 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 10:56:32,353 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 10:56:32,354 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 10:56:32,354 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 10:56:32,354 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 10:56:32,355 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 10:56:32,355 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 10:56:32,355 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 10:56:32,355 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 10:56:32,356 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_a357e79c-3ed0-4232-b8ad-4e429590df33/bin/uautomizer-tPACEb0tL8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a357e79c-3ed0-4232-b8ad-4e429590df33/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e401a4e4197b43467958a92870f8195ba22195c146137fa78352c627ea2eeb40 [2022-11-16 10:56:32,681 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 10:56:32,725 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 10:56:32,728 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 10:56:32,729 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 10:56:32,730 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 10:56:32,732 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a357e79c-3ed0-4232-b8ad-4e429590df33/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/aws-c-common/aws_byte_buf_clean_up_secure_harness.i [2022-11-16 10:56:32,811 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a357e79c-3ed0-4232-b8ad-4e429590df33/bin/uautomizer-tPACEb0tL8/data/43e4edea7/28d11f8a0731406b9ff34de85e968729/FLAGf2be55b01 [2022-11-16 10:56:33,939 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 10:56:33,940 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a357e79c-3ed0-4232-b8ad-4e429590df33/sv-benchmarks/c/aws-c-common/aws_byte_buf_clean_up_secure_harness.i [2022-11-16 10:56:33,984 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a357e79c-3ed0-4232-b8ad-4e429590df33/bin/uautomizer-tPACEb0tL8/data/43e4edea7/28d11f8a0731406b9ff34de85e968729/FLAGf2be55b01 [2022-11-16 10:56:34,291 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a357e79c-3ed0-4232-b8ad-4e429590df33/bin/uautomizer-tPACEb0tL8/data/43e4edea7/28d11f8a0731406b9ff34de85e968729 [2022-11-16 10:56:34,296 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 10:56:34,301 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 10:56:34,305 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 10:56:34,306 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 10:56:34,310 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 10:56:34,311 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 10:56:34" (1/1) ... [2022-11-16 10:56:34,312 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@289159b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:56:34, skipping insertion in model container [2022-11-16 10:56:34,313 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 10:56:34" (1/1) ... [2022-11-16 10:56:34,322 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 10:56:34,447 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 10:56:34,761 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a357e79c-3ed0-4232-b8ad-4e429590df33/sv-benchmarks/c/aws-c-common/aws_byte_buf_clean_up_secure_harness.i[4502,4515] [2022-11-16 10:56:34,768 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a357e79c-3ed0-4232-b8ad-4e429590df33/sv-benchmarks/c/aws-c-common/aws_byte_buf_clean_up_secure_harness.i[4562,4575] [2022-11-16 10:56:36,167 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 10:56:36,171 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 10:56:36,172 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 10:56:36,173 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 10:56:36,176 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 10:56:36,204 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 10:56:36,209 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 10:56:36,216 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 10:56:36,217 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 10:56:36,849 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-16 10:56:36,851 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-16 10:56:36,852 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-16 10:56:36,854 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-16 10:56:36,858 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-16 10:56:36,859 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-16 10:56:36,863 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-16 10:56:36,864 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-16 10:56:36,866 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-16 10:56:36,867 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-16 10:56:37,082 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-16 10:56:37,223 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 10:56:37,224 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 10:56:37,323 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 10:56:37,387 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 10:56:37,402 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a357e79c-3ed0-4232-b8ad-4e429590df33/sv-benchmarks/c/aws-c-common/aws_byte_buf_clean_up_secure_harness.i[4502,4515] [2022-11-16 10:56:37,402 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a357e79c-3ed0-4232-b8ad-4e429590df33/sv-benchmarks/c/aws-c-common/aws_byte_buf_clean_up_secure_harness.i[4562,4575] [2022-11-16 10:56:37,441 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 10:56:37,442 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 10:56:37,442 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 10:56:37,443 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 10:56:37,444 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 10:56:37,451 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 10:56:37,452 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 10:56:37,453 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 10:56:37,454 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 10:56:37,487 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-16 10:56:37,488 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-16 10:56:37,489 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-16 10:56:37,490 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-16 10:56:37,491 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-16 10:56:37,492 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-16 10:56:37,492 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-16 10:56:37,493 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-16 10:56:37,494 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-16 10:56:37,494 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-16 10:56:37,517 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-16 10:56:37,609 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 10:56:37,611 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 10:56:37,666 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 10:56:37,987 INFO L208 MainTranslator]: Completed translation [2022-11-16 10:56:37,988 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:56:37 WrapperNode [2022-11-16 10:56:37,988 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 10:56:37,990 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 10:56:37,990 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 10:56:37,990 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 10:56:37,999 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:56:37" (1/1) ... [2022-11-16 10:56:38,134 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:56:37" (1/1) ... [2022-11-16 10:56:38,220 INFO L138 Inliner]: procedures = 691, calls = 2504, calls flagged for inlining = 56, calls inlined = 8, statements flattened = 817 [2022-11-16 10:56:38,221 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 10:56:38,221 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 10:56:38,222 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 10:56:38,222 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 10:56:38,246 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:56:37" (1/1) ... [2022-11-16 10:56:38,246 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:56:37" (1/1) ... [2022-11-16 10:56:38,261 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:56:37" (1/1) ... [2022-11-16 10:56:38,264 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:56:37" (1/1) ... [2022-11-16 10:56:38,336 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:56:37" (1/1) ... [2022-11-16 10:56:38,342 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:56:37" (1/1) ... [2022-11-16 10:56:38,350 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:56:37" (1/1) ... [2022-11-16 10:56:38,355 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:56:37" (1/1) ... [2022-11-16 10:56:38,367 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 10:56:38,368 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 10:56:38,368 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 10:56:38,368 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 10:56:38,372 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:56:37" (1/1) ... [2022-11-16 10:56:38,434 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 10:56:38,455 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a357e79c-3ed0-4232-b8ad-4e429590df33/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 10:56:38,496 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a357e79c-3ed0-4232-b8ad-4e429590df33/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 10:56:38,530 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a357e79c-3ed0-4232-b8ad-4e429590df33/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 10:56:38,576 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2022-11-16 10:56:38,577 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2022-11-16 10:56:38,577 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 10:56:38,578 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-11-16 10:56:38,578 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-11-16 10:56:38,578 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 10:56:38,578 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-16 10:56:38,579 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-16 10:56:38,579 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_secure_zero [2022-11-16 10:56:38,579 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_secure_zero [2022-11-16 10:56:38,580 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-16 10:56:38,581 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 10:56:38,581 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-16 10:56:38,582 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 10:56:38,583 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 10:56:38,583 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-11-16 10:56:38,583 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-11-16 10:56:38,583 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_release [2022-11-16 10:56:38,584 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_release [2022-11-16 10:56:38,584 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-16 10:56:38,584 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-16 10:56:38,585 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 10:56:38,585 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-16 10:56:38,585 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-16 10:56:38,585 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2022-11-16 10:56:38,585 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2022-11-16 10:56:38,587 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 10:56:38,587 INFO L130 BoogieDeclarations]: Found specification of procedure memset_impl [2022-11-16 10:56:38,587 INFO L138 BoogieDeclarations]: Found implementation of procedure memset_impl [2022-11-16 10:56:38,587 INFO L130 BoogieDeclarations]: Found specification of procedure my_memset [2022-11-16 10:56:38,588 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memset [2022-11-16 10:56:38,588 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 10:56:39,008 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 10:56:39,011 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 10:56:40,631 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 10:56:40,643 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 10:56:40,643 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-16 10:56:40,646 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 10:56:40 BoogieIcfgContainer [2022-11-16 10:56:40,646 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 10:56:40,653 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 10:56:40,653 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 10:56:40,658 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 10:56:40,659 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 10:56:34" (1/3) ... [2022-11-16 10:56:40,660 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39e947ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 10:56:40, skipping insertion in model container [2022-11-16 10:56:40,660 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:56:37" (2/3) ... [2022-11-16 10:56:40,660 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39e947ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 10:56:40, skipping insertion in model container [2022-11-16 10:56:40,660 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 10:56:40" (3/3) ... [2022-11-16 10:56:40,662 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_clean_up_secure_harness.i [2022-11-16 10:56:40,689 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 10:56:40,690 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 10:56:40,785 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 10:56:40,799 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;@5b4f1d4e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 10:56:40,800 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-16 10:56:40,806 INFO L276 IsEmpty]: Start isEmpty. Operand has 119 states, 79 states have (on average 1.2278481012658229) internal successors, (97), 80 states have internal predecessors, (97), 28 states have call successors, (28), 10 states have call predecessors, (28), 10 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2022-11-16 10:56:40,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-16 10:56:40,828 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 10:56:40,829 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:56:40,829 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 10:56:40,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:56:40,839 INFO L85 PathProgramCache]: Analyzing trace with hash -1424840205, now seen corresponding path program 1 times [2022-11-16 10:56:40,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:56:40,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80523659] [2022-11-16 10:56:40,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:56:40,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:56:41,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:41,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-16 10:56:41,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:41,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-16 10:56:41,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:41,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-16 10:56:41,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:41,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 10:56:41,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:41,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-16 10:56:41,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:41,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-16 10:56:41,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:41,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-16 10:56:41,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:41,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-16 10:56:41,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:41,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-16 10:56:41,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:41,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-16 10:56:41,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:41,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-16 10:56:41,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:41,926 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-11-16 10:56:41,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:56:41,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80523659] [2022-11-16 10:56:41,929 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80523659] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:56:41,929 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:56:41,929 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 10:56:41,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200960323] [2022-11-16 10:56:41,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:56:41,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 10:56:41,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:56:41,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 10:56:41,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 10:56:41,995 INFO L87 Difference]: Start difference. First operand has 119 states, 79 states have (on average 1.2278481012658229) internal successors, (97), 80 states have internal predecessors, (97), 28 states have call successors, (28), 10 states have call predecessors, (28), 10 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-16 10:56:42,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 10:56:42,516 INFO L93 Difference]: Finished difference Result 236 states and 323 transitions. [2022-11-16 10:56:42,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 10:56:42,519 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) Word has length 77 [2022-11-16 10:56:42,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 10:56:42,536 INFO L225 Difference]: With dead ends: 236 [2022-11-16 10:56:42,536 INFO L226 Difference]: Without dead ends: 116 [2022-11-16 10:56:42,550 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 10:56:42,560 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 68 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 10:56:42,562 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 101 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-16 10:56:42,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2022-11-16 10:56:42,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 114. [2022-11-16 10:56:42,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 75 states have (on average 1.2) internal successors, (90), 76 states have internal predecessors, (90), 28 states have call successors, (28), 10 states have call predecessors, (28), 10 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2022-11-16 10:56:42,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 145 transitions. [2022-11-16 10:56:42,648 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 145 transitions. Word has length 77 [2022-11-16 10:56:42,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 10:56:42,649 INFO L495 AbstractCegarLoop]: Abstraction has 114 states and 145 transitions. [2022-11-16 10:56:42,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-16 10:56:42,649 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 145 transitions. [2022-11-16 10:56:42,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-16 10:56:42,662 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 10:56:42,663 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:56:42,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 10:56:42,663 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 10:56:42,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:56:42,664 INFO L85 PathProgramCache]: Analyzing trace with hash -1664499927, now seen corresponding path program 1 times [2022-11-16 10:56:42,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:56:42,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774903964] [2022-11-16 10:56:42,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:56:42,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:56:42,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:43,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-16 10:56:43,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:43,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-16 10:56:43,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:43,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-16 10:56:43,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:43,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 10:56:43,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:43,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-16 10:56:43,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:43,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-16 10:56:43,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:43,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-16 10:56:43,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:43,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-16 10:56:43,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:43,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-16 10:56:43,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:43,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-16 10:56:43,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:43,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-16 10:56:43,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:43,961 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-16 10:56:43,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:56:43,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774903964] [2022-11-16 10:56:43,962 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774903964] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 10:56:43,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [192879659] [2022-11-16 10:56:43,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:56:43,963 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:56:43,963 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a357e79c-3ed0-4232-b8ad-4e429590df33/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 10:56:43,970 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a357e79c-3ed0-4232-b8ad-4e429590df33/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 10:56:43,986 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a357e79c-3ed0-4232-b8ad-4e429590df33/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 10:56:44,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:44,675 INFO L263 TraceCheckSpWp]: Trace formula consists of 2503 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-16 10:56:44,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:56:44,869 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-16 10:56:44,869 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 10:56:44,869 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [192879659] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:56:44,869 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 10:56:44,870 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2022-11-16 10:56:44,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688479813] [2022-11-16 10:56:44,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:56:44,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 10:56:44,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:56:44,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 10:56:44,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-11-16 10:56:44,873 INFO L87 Difference]: Start difference. First operand 114 states and 145 transitions. Second operand has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-16 10:56:45,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 10:56:45,092 INFO L93 Difference]: Finished difference Result 206 states and 269 transitions. [2022-11-16 10:56:45,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 10:56:45,093 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 77 [2022-11-16 10:56:45,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 10:56:45,103 INFO L225 Difference]: With dead ends: 206 [2022-11-16 10:56:45,103 INFO L226 Difference]: Without dead ends: 117 [2022-11-16 10:56:45,106 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2022-11-16 10:56:45,109 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 167 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 320 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 10:56:45,110 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 320 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 10:56:45,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2022-11-16 10:56:45,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2022-11-16 10:56:45,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 77 states have (on average 1.1948051948051948) internal successors, (92), 79 states have internal predecessors, (92), 28 states have call successors, (28), 10 states have call predecessors, (28), 11 states have return successors, (32), 27 states have call predecessors, (32), 27 states have call successors, (32) [2022-11-16 10:56:45,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 152 transitions. [2022-11-16 10:56:45,145 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 152 transitions. Word has length 77 [2022-11-16 10:56:45,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 10:56:45,145 INFO L495 AbstractCegarLoop]: Abstraction has 117 states and 152 transitions. [2022-11-16 10:56:45,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-16 10:56:45,146 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 152 transitions. [2022-11-16 10:56:45,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-11-16 10:56:45,150 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 10:56:45,152 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:56:45,174 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a357e79c-3ed0-4232-b8ad-4e429590df33/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 10:56:45,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a357e79c-3ed0-4232-b8ad-4e429590df33/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:56:45,368 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 10:56:45,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:56:45,368 INFO L85 PathProgramCache]: Analyzing trace with hash -1289533548, now seen corresponding path program 1 times [2022-11-16 10:56:45,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:56:45,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816429321] [2022-11-16 10:56:45,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:56:45,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:56:45,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:46,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-16 10:56:46,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:46,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-16 10:56:46,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:46,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-16 10:56:46,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:46,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 10:56:46,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:46,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-16 10:56:46,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:46,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-16 10:56:46,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:46,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-16 10:56:46,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:46,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-16 10:56:46,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:46,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-16 10:56:46,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:46,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-16 10:56:46,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:46,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-16 10:56:46,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:46,973 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2022-11-16 10:56:46,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:56:46,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816429321] [2022-11-16 10:56:46,975 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816429321] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 10:56:46,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [934821680] [2022-11-16 10:56:46,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:56:46,976 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:56:46,976 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a357e79c-3ed0-4232-b8ad-4e429590df33/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 10:56:46,977 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a357e79c-3ed0-4232-b8ad-4e429590df33/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 10:56:47,010 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a357e79c-3ed0-4232-b8ad-4e429590df33/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 10:56:47,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:47,649 INFO L263 TraceCheckSpWp]: Trace formula consists of 2520 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 10:56:47,663 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:56:47,841 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-16 10:56:47,841 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 10:56:47,842 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [934821680] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:56:47,842 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 10:56:47,842 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 15 [2022-11-16 10:56:47,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501865537] [2022-11-16 10:56:47,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:56:47,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 10:56:47,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:56:47,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 10:56:47,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2022-11-16 10:56:47,845 INFO L87 Difference]: Start difference. First operand 117 states and 152 transitions. Second operand has 7 states, 6 states have (on average 7.666666666666667) internal successors, (46), 7 states have internal predecessors, (46), 4 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) [2022-11-16 10:56:48,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 10:56:48,162 INFO L93 Difference]: Finished difference Result 206 states and 269 transitions. [2022-11-16 10:56:48,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 10:56:48,163 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 7.666666666666667) internal successors, (46), 7 states have internal predecessors, (46), 4 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) Word has length 83 [2022-11-16 10:56:48,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 10:56:48,165 INFO L225 Difference]: With dead ends: 206 [2022-11-16 10:56:48,165 INFO L226 Difference]: Without dead ends: 117 [2022-11-16 10:56:48,166 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342 [2022-11-16 10:56:48,167 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 182 mSDsluCounter, 390 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 505 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 10:56:48,167 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [184 Valid, 505 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 10:56:48,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2022-11-16 10:56:48,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2022-11-16 10:56:48,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 77 states have (on average 1.1948051948051948) internal successors, (92), 79 states have internal predecessors, (92), 28 states have call successors, (28), 10 states have call predecessors, (28), 11 states have return successors, (30), 27 states have call predecessors, (30), 27 states have call successors, (30) [2022-11-16 10:56:48,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 150 transitions. [2022-11-16 10:56:48,183 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 150 transitions. Word has length 83 [2022-11-16 10:56:48,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 10:56:48,183 INFO L495 AbstractCegarLoop]: Abstraction has 117 states and 150 transitions. [2022-11-16 10:56:48,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 7.666666666666667) internal successors, (46), 7 states have internal predecessors, (46), 4 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) [2022-11-16 10:56:48,184 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 150 transitions. [2022-11-16 10:56:48,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-11-16 10:56:48,185 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 10:56:48,186 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 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] [2022-11-16 10:56:48,208 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a357e79c-3ed0-4232-b8ad-4e429590df33/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 10:56:48,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a357e79c-3ed0-4232-b8ad-4e429590df33/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:56:48,397 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 10:56:48,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:56:48,397 INFO L85 PathProgramCache]: Analyzing trace with hash -596597057, now seen corresponding path program 2 times [2022-11-16 10:56:48,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:56:48,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742690756] [2022-11-16 10:56:48,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:56:48,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:56:48,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:49,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-16 10:56:49,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:49,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-16 10:56:49,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:49,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-16 10:56:49,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:49,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 10:56:49,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:49,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-16 10:56:49,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:49,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-16 10:56:49,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:49,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-16 10:56:49,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:49,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-16 10:56:49,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:49,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-16 10:56:49,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:49,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-16 10:56:49,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:49,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-16 10:56:49,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:49,910 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 4 proven. 22 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2022-11-16 10:56:49,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:56:49,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742690756] [2022-11-16 10:56:49,911 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742690756] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 10:56:49,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [977639507] [2022-11-16 10:56:49,912 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 10:56:49,912 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:56:49,912 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a357e79c-3ed0-4232-b8ad-4e429590df33/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 10:56:49,913 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a357e79c-3ed0-4232-b8ad-4e429590df33/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 10:56:49,946 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a357e79c-3ed0-4232-b8ad-4e429590df33/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 10:56:50,583 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 10:56:50,583 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 10:56:50,597 INFO L263 TraceCheckSpWp]: Trace formula consists of 2537 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-16 10:56:50,602 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:56:50,929 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-11-16 10:56:50,929 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 10:56:50,929 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [977639507] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:56:50,930 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 10:56:50,930 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [12] total 19 [2022-11-16 10:56:50,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682779268] [2022-11-16 10:56:50,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:56:50,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-16 10:56:50,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:56:50,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-16 10:56:50,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2022-11-16 10:56:50,936 INFO L87 Difference]: Start difference. First operand 117 states and 150 transitions. Second operand has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 8 states have internal predecessors, (40), 5 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 5 states have call predecessors, (11), 4 states have call successors, (11) [2022-11-16 10:56:51,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 10:56:51,369 INFO L93 Difference]: Finished difference Result 201 states and 258 transitions. [2022-11-16 10:56:51,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 10:56:51,370 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 8 states have internal predecessors, (40), 5 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 5 states have call predecessors, (11), 4 states have call successors, (11) Word has length 89 [2022-11-16 10:56:51,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 10:56:51,375 INFO L225 Difference]: With dead ends: 201 [2022-11-16 10:56:51,375 INFO L226 Difference]: Without dead ends: 117 [2022-11-16 10:56:51,376 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=81, Invalid=519, Unknown=0, NotChecked=0, Total=600 [2022-11-16 10:56:51,381 INFO L413 NwaCegarLoop]: 108 mSDtfsCounter, 189 mSDsluCounter, 552 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 660 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 10:56:51,382 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [189 Valid, 660 Invalid, 293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 10:56:51,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2022-11-16 10:56:51,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2022-11-16 10:56:51,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 77 states have (on average 1.1948051948051948) internal successors, (92), 79 states have internal predecessors, (92), 28 states have call successors, (28), 10 states have call predecessors, (28), 11 states have return successors, (28), 27 states have call predecessors, (28), 27 states have call successors, (28) [2022-11-16 10:56:51,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 148 transitions. [2022-11-16 10:56:51,396 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 148 transitions. Word has length 89 [2022-11-16 10:56:51,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 10:56:51,397 INFO L495 AbstractCegarLoop]: Abstraction has 117 states and 148 transitions. [2022-11-16 10:56:51,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 8 states have internal predecessors, (40), 5 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 5 states have call predecessors, (11), 4 states have call successors, (11) [2022-11-16 10:56:51,398 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 148 transitions. [2022-11-16 10:56:51,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-11-16 10:56:51,399 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 10:56:51,399 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:56:51,418 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a357e79c-3ed0-4232-b8ad-4e429590df33/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-16 10:56:51,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a357e79c-3ed0-4232-b8ad-4e429590df33/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:56:51,611 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 10:56:51,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:56:51,611 INFO L85 PathProgramCache]: Analyzing trace with hash 24265301, now seen corresponding path program 1 times [2022-11-16 10:56:51,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:56:51,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760665598] [2022-11-16 10:56:51,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:56:51,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:56:51,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:52,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-16 10:56:52,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:52,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-16 10:56:52,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:52,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-16 10:56:52,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:52,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 10:56:52,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:52,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-16 10:56:52,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:52,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-16 10:56:52,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:52,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-16 10:56:52,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:52,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-16 10:56:52,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:52,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-16 10:56:52,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:52,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-16 10:56:52,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:52,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-16 10:56:52,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:53,013 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2022-11-16 10:56:53,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:56:53,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760665598] [2022-11-16 10:56:53,014 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760665598] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:56:53,014 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:56:53,014 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-16 10:56:53,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000270629] [2022-11-16 10:56:53,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:56:53,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-16 10:56:53,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:56:53,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-16 10:56:53,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-16 10:56:53,018 INFO L87 Difference]: Start difference. First operand 117 states and 148 transitions. Second operand has 9 states, 8 states have (on average 4.875) internal successors, (39), 6 states have internal predecessors, (39), 2 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2022-11-16 10:56:53,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 10:56:53,890 INFO L93 Difference]: Finished difference Result 131 states and 167 transitions. [2022-11-16 10:56:53,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 10:56:53,891 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 4.875) internal successors, (39), 6 states have internal predecessors, (39), 2 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) Word has length 101 [2022-11-16 10:56:53,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 10:56:53,893 INFO L225 Difference]: With dead ends: 131 [2022-11-16 10:56:53,893 INFO L226 Difference]: Without dead ends: 129 [2022-11-16 10:56:53,894 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2022-11-16 10:56:53,895 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 96 mSDsluCounter, 322 mSDsCounter, 0 mSdLazyCounter, 695 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 389 SdHoareTripleChecker+Invalid, 719 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 695 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-16 10:56:53,895 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 389 Invalid, 719 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 695 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-16 10:56:53,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2022-11-16 10:56:53,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 126. [2022-11-16 10:56:53,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 83 states have (on average 1.180722891566265) internal successors, (98), 86 states have internal predecessors, (98), 29 states have call successors, (29), 11 states have call predecessors, (29), 13 states have return successors, (35), 28 states have call predecessors, (35), 28 states have call successors, (35) [2022-11-16 10:56:53,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 162 transitions. [2022-11-16 10:56:53,910 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 162 transitions. Word has length 101 [2022-11-16 10:56:53,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 10:56:53,911 INFO L495 AbstractCegarLoop]: Abstraction has 126 states and 162 transitions. [2022-11-16 10:56:53,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 4.875) internal successors, (39), 6 states have internal predecessors, (39), 2 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2022-11-16 10:56:53,911 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 162 transitions. [2022-11-16 10:56:53,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-11-16 10:56:53,913 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 10:56:53,913 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:56:53,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 10:56:53,914 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 10:56:53,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:56:53,914 INFO L85 PathProgramCache]: Analyzing trace with hash 1524483933, now seen corresponding path program 1 times [2022-11-16 10:56:53,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:56:53,915 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945212874] [2022-11-16 10:56:53,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:56:53,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:56:54,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:55,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-16 10:56:55,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:55,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-16 10:56:55,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:55,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-16 10:56:55,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:55,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 10:56:55,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:55,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-16 10:56:55,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:55,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-16 10:56:55,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:55,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-16 10:56:55,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:55,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-16 10:56:55,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:55,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-16 10:56:55,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:55,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-16 10:56:55,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:55,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-16 10:56:55,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:56,024 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2022-11-16 10:56:56,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:56:56,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945212874] [2022-11-16 10:56:56,025 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1945212874] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:56:56,025 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:56:56,025 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 10:56:56,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99132429] [2022-11-16 10:56:56,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:56:56,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 10:56:56,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:56:56,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 10:56:56,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-16 10:56:56,028 INFO L87 Difference]: Start difference. First operand 126 states and 162 transitions. Second operand has 7 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 3 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-16 10:56:56,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 10:56:56,915 INFO L93 Difference]: Finished difference Result 254 states and 345 transitions. [2022-11-16 10:56:56,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 10:56:56,916 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 3 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 105 [2022-11-16 10:56:56,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 10:56:56,918 INFO L225 Difference]: With dead ends: 254 [2022-11-16 10:56:56,918 INFO L226 Difference]: Without dead ends: 153 [2022-11-16 10:56:56,919 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-16 10:56:56,920 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 134 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 513 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 273 SdHoareTripleChecker+Invalid, 543 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 513 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-16 10:56:56,920 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 273 Invalid, 543 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 513 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-16 10:56:56,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2022-11-16 10:56:56,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 131. [2022-11-16 10:56:56,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 88 states have (on average 1.1931818181818181) internal successors, (105), 91 states have internal predecessors, (105), 29 states have call successors, (29), 11 states have call predecessors, (29), 13 states have return successors, (35), 28 states have call predecessors, (35), 28 states have call successors, (35) [2022-11-16 10:56:56,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 169 transitions. [2022-11-16 10:56:56,956 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 169 transitions. Word has length 105 [2022-11-16 10:56:56,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 10:56:56,959 INFO L495 AbstractCegarLoop]: Abstraction has 131 states and 169 transitions. [2022-11-16 10:56:56,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 3 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-16 10:56:56,960 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 169 transitions. [2022-11-16 10:56:56,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-11-16 10:56:56,962 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 10:56:56,963 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:56:56,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 10:56:56,963 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 10:56:56,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:56:56,964 INFO L85 PathProgramCache]: Analyzing trace with hash 1782649371, now seen corresponding path program 1 times [2022-11-16 10:56:56,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:56:56,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946976561] [2022-11-16 10:56:56,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:56:56,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:56:57,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:59,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-16 10:56:59,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:59,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-16 10:56:59,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:59,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-16 10:56:59,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:59,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 10:56:59,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:59,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-16 10:56:59,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:00,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-16 10:57:00,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:00,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-16 10:57:00,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:00,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-16 10:57:00,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:00,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-16 10:57:00,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:00,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-16 10:57:00,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:00,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-16 10:57:00,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:00,075 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2022-11-16 10:57:00,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:57:00,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946976561] [2022-11-16 10:57:00,076 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946976561] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 10:57:00,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [949559486] [2022-11-16 10:57:00,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:57:00,077 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:57:00,077 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a357e79c-3ed0-4232-b8ad-4e429590df33/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 10:57:00,079 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a357e79c-3ed0-4232-b8ad-4e429590df33/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 10:57:00,093 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a357e79c-3ed0-4232-b8ad-4e429590df33/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 10:57:00,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:00,759 INFO L263 TraceCheckSpWp]: Trace formula consists of 2578 conjuncts, 30 conjunts are in the unsatisfiable core [2022-11-16 10:57:00,766 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:57:00,888 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 11 treesize of output 7 [2022-11-16 10:57:01,286 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-11-16 10:57:01,287 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 10:57:01,287 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [949559486] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:57:01,287 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 10:57:01,287 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [12] total 17 [2022-11-16 10:57:01,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634578917] [2022-11-16 10:57:01,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:57:01,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 10:57:01,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:57:01,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 10:57:01,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2022-11-16 10:57:01,290 INFO L87 Difference]: Start difference. First operand 131 states and 169 transitions. Second operand has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 10 states have internal predecessors, (53), 5 states have call successors, (13), 3 states have call predecessors, (13), 4 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) [2022-11-16 10:57:01,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 10:57:01,385 INFO L93 Difference]: Finished difference Result 263 states and 340 transitions. [2022-11-16 10:57:01,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-16 10:57:01,386 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 10 states have internal predecessors, (53), 5 states have call successors, (13), 3 states have call predecessors, (13), 4 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) Word has length 105 [2022-11-16 10:57:01,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 10:57:01,388 INFO L225 Difference]: With dead ends: 263 [2022-11-16 10:57:01,388 INFO L226 Difference]: Without dead ends: 150 [2022-11-16 10:57:01,389 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 121 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2022-11-16 10:57:01,390 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 28 mSDsluCounter, 969 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 1109 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 86 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 10:57:01,390 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 1109 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 36 Invalid, 0 Unknown, 86 Unchecked, 0.1s Time] [2022-11-16 10:57:01,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2022-11-16 10:57:01,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2022-11-16 10:57:01,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 106 states have (on average 1.2075471698113207) internal successors, (128), 109 states have internal predecessors, (128), 29 states have call successors, (29), 12 states have call predecessors, (29), 14 states have return successors, (35), 28 states have call predecessors, (35), 28 states have call successors, (35) [2022-11-16 10:57:01,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 192 transitions. [2022-11-16 10:57:01,405 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 192 transitions. Word has length 105 [2022-11-16 10:57:01,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 10:57:01,406 INFO L495 AbstractCegarLoop]: Abstraction has 150 states and 192 transitions. [2022-11-16 10:57:01,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 10 states have internal predecessors, (53), 5 states have call successors, (13), 3 states have call predecessors, (13), 4 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) [2022-11-16 10:57:01,406 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 192 transitions. [2022-11-16 10:57:01,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-11-16 10:57:01,408 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 10:57:01,408 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:57:01,419 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a357e79c-3ed0-4232-b8ad-4e429590df33/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-11-16 10:57:01,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a357e79c-3ed0-4232-b8ad-4e429590df33/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:57:01,619 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 10:57:01,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:57:01,619 INFO L85 PathProgramCache]: Analyzing trace with hash -128393187, now seen corresponding path program 1 times [2022-11-16 10:57:01,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:57:01,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998473005] [2022-11-16 10:57:01,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:57:01,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:57:01,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:01,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-16 10:57:01,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:01,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-16 10:57:01,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:02,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-16 10:57:02,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:02,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 10:57:02,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:02,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-16 10:57:02,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:02,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-16 10:57:02,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:02,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-16 10:57:02,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:02,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-16 10:57:02,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:02,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-16 10:57:02,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:02,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-16 10:57:02,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:02,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-16 10:57:02,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:02,147 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2022-11-16 10:57:02,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:57:02,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998473005] [2022-11-16 10:57:02,148 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998473005] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 10:57:02,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [96262263] [2022-11-16 10:57:02,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:57:02,149 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:57:02,149 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a357e79c-3ed0-4232-b8ad-4e429590df33/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 10:57:02,150 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a357e79c-3ed0-4232-b8ad-4e429590df33/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 10:57:02,178 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a357e79c-3ed0-4232-b8ad-4e429590df33/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-16 10:57:02,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:02,788 INFO L263 TraceCheckSpWp]: Trace formula consists of 2573 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 10:57:02,792 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:57:02,806 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-11-16 10:57:02,807 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 10:57:02,807 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [96262263] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:57:02,807 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 10:57:02,807 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2022-11-16 10:57:02,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137906172] [2022-11-16 10:57:02,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:57:02,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 10:57:02,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:57:02,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 10:57:02,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 10:57:02,810 INFO L87 Difference]: Start difference. First operand 150 states and 192 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-16 10:57:02,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 10:57:02,845 INFO L93 Difference]: Finished difference Result 269 states and 355 transitions. [2022-11-16 10:57:02,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 10:57:02,846 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 105 [2022-11-16 10:57:02,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 10:57:02,848 INFO L225 Difference]: With dead ends: 269 [2022-11-16 10:57:02,848 INFO L226 Difference]: Without dead ends: 159 [2022-11-16 10:57:02,849 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-16 10:57:02,850 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 20 mSDsluCounter, 271 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 427 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 [2022-11-16 10:57:02,850 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 427 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 10:57:02,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2022-11-16 10:57:02,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 142. [2022-11-16 10:57:02,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 99 states have (on average 1.202020202020202) internal successors, (119), 101 states have internal predecessors, (119), 29 states have call successors, (29), 12 states have call predecessors, (29), 13 states have return successors, (34), 28 states have call predecessors, (34), 28 states have call successors, (34) [2022-11-16 10:57:02,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 182 transitions. [2022-11-16 10:57:02,864 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 182 transitions. Word has length 105 [2022-11-16 10:57:02,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 10:57:02,864 INFO L495 AbstractCegarLoop]: Abstraction has 142 states and 182 transitions. [2022-11-16 10:57:02,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-16 10:57:02,865 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 182 transitions. [2022-11-16 10:57:02,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-16 10:57:02,867 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 10:57:02,867 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-11-16 10:57:02,884 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a357e79c-3ed0-4232-b8ad-4e429590df33/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-16 10:57:03,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a357e79c-3ed0-4232-b8ad-4e429590df33/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-16 10:57:03,085 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 10:57:03,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:57:03,085 INFO L85 PathProgramCache]: Analyzing trace with hash 1209587169, now seen corresponding path program 2 times [2022-11-16 10:57:03,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:57:03,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014390549] [2022-11-16 10:57:03,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:57:03,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:57:03,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:04,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-16 10:57:04,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:04,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-16 10:57:04,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:04,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-16 10:57:04,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:04,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 10:57:04,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:04,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-16 10:57:04,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:04,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-16 10:57:04,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:04,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-16 10:57:04,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:04,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-16 10:57:04,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:04,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-16 10:57:04,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:04,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-11-16 10:57:04,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:04,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-11-16 10:57:04,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:04,446 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 6 proven. 19 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2022-11-16 10:57:04,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:57:04,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014390549] [2022-11-16 10:57:04,447 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014390549] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 10:57:04,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [65796034] [2022-11-16 10:57:04,447 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 10:57:04,447 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:57:04,448 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a357e79c-3ed0-4232-b8ad-4e429590df33/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 10:57:04,451 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a357e79c-3ed0-4232-b8ad-4e429590df33/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 10:57:04,459 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a357e79c-3ed0-4232-b8ad-4e429590df33/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-16 10:57:05,064 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-16 10:57:05,064 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 10:57:05,076 INFO L263 TraceCheckSpWp]: Trace formula consists of 2334 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-16 10:57:05,082 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:57:05,176 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-16 10:57:05,188 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-16 10:57:05,823 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2022-11-16 10:57:05,823 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 10:57:05,824 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [65796034] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:57:05,824 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 10:57:05,824 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10] total 17 [2022-11-16 10:57:05,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775566925] [2022-11-16 10:57:05,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:57:05,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-16 10:57:05,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:57:05,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-16 10:57:05,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=236, Unknown=0, NotChecked=0, Total=272 [2022-11-16 10:57:05,827 INFO L87 Difference]: Start difference. First operand 142 states and 182 transitions. Second operand has 9 states, 9 states have (on average 6.0) internal successors, (54), 8 states have internal predecessors, (54), 3 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-16 10:57:05,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 10:57:05,973 INFO L93 Difference]: Finished difference Result 249 states and 319 transitions. [2022-11-16 10:57:05,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 10:57:05,974 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.0) internal successors, (54), 8 states have internal predecessors, (54), 3 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 109 [2022-11-16 10:57:05,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 10:57:05,977 INFO L225 Difference]: With dead ends: 249 [2022-11-16 10:57:05,977 INFO L226 Difference]: Without dead ends: 164 [2022-11-16 10:57:05,978 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=236, Unknown=0, NotChecked=0, Total=272 [2022-11-16 10:57:05,978 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 25 mSDsluCounter, 571 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 733 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 97 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 10:57:05,979 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 733 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 97 Unchecked, 0.1s Time] [2022-11-16 10:57:05,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2022-11-16 10:57:05,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 160. [2022-11-16 10:57:05,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 116 states have (on average 1.2241379310344827) internal successors, (142), 118 states have internal predecessors, (142), 30 states have call successors, (30), 13 states have call predecessors, (30), 13 states have return successors, (36), 28 states have call predecessors, (36), 29 states have call successors, (36) [2022-11-16 10:57:05,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 208 transitions. [2022-11-16 10:57:05,993 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 208 transitions. Word has length 109 [2022-11-16 10:57:05,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 10:57:05,994 INFO L495 AbstractCegarLoop]: Abstraction has 160 states and 208 transitions. [2022-11-16 10:57:05,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.0) internal successors, (54), 8 states have internal predecessors, (54), 3 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-16 10:57:05,995 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 208 transitions. [2022-11-16 10:57:05,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-16 10:57:05,997 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 10:57:05,997 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-11-16 10:57:06,013 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a357e79c-3ed0-4232-b8ad-4e429590df33/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-16 10:57:06,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a357e79c-3ed0-4232-b8ad-4e429590df33/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-11-16 10:57:06,214 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 10:57:06,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:57:06,215 INFO L85 PathProgramCache]: Analyzing trace with hash -70276509, now seen corresponding path program 2 times [2022-11-16 10:57:06,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:57:06,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480634521] [2022-11-16 10:57:06,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:57:06,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:57:06,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:07,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-16 10:57:07,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:07,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-16 10:57:07,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:07,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-16 10:57:07,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:07,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 10:57:07,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:07,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-16 10:57:07,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:07,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-16 10:57:07,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:07,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-16 10:57:07,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:07,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-16 10:57:07,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:07,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-16 10:57:07,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:07,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-11-16 10:57:07,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:07,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-11-16 10:57:07,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:07,738 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2022-11-16 10:57:07,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:57:07,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480634521] [2022-11-16 10:57:07,739 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480634521] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:57:07,739 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:57:07,739 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-16 10:57:07,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283869037] [2022-11-16 10:57:07,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:57:07,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-16 10:57:07,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:57:07,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-16 10:57:07,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-16 10:57:07,741 INFO L87 Difference]: Start difference. First operand 160 states and 208 transitions. Second operand has 9 states, 8 states have (on average 6.75) internal successors, (54), 8 states have internal predecessors, (54), 3 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-16 10:57:08,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 10:57:08,726 INFO L93 Difference]: Finished difference Result 262 states and 340 transitions. [2022-11-16 10:57:08,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 10:57:08,727 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.75) internal successors, (54), 8 states have internal predecessors, (54), 3 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 109 [2022-11-16 10:57:08,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 10:57:08,729 INFO L225 Difference]: With dead ends: 262 [2022-11-16 10:57:08,729 INFO L226 Difference]: Without dead ends: 186 [2022-11-16 10:57:08,730 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2022-11-16 10:57:08,731 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 153 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 681 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 295 SdHoareTripleChecker+Invalid, 708 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 681 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-16 10:57:08,731 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 295 Invalid, 708 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 681 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-16 10:57:08,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2022-11-16 10:57:08,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 172. [2022-11-16 10:57:08,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 127 states have (on average 1.220472440944882) internal successors, (155), 130 states have internal predecessors, (155), 30 states have call successors, (30), 13 states have call predecessors, (30), 14 states have return successors, (41), 28 states have call predecessors, (41), 29 states have call successors, (41) [2022-11-16 10:57:08,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 226 transitions. [2022-11-16 10:57:08,746 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 226 transitions. Word has length 109 [2022-11-16 10:57:08,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 10:57:08,747 INFO L495 AbstractCegarLoop]: Abstraction has 172 states and 226 transitions. [2022-11-16 10:57:08,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.75) internal successors, (54), 8 states have internal predecessors, (54), 3 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-16 10:57:08,747 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 226 transitions. [2022-11-16 10:57:08,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-16 10:57:08,749 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 10:57:08,749 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 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] [2022-11-16 10:57:08,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-16 10:57:08,750 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 10:57:08,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:57:08,751 INFO L85 PathProgramCache]: Analyzing trace with hash -1916789849, now seen corresponding path program 1 times [2022-11-16 10:57:08,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:57:08,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996528841] [2022-11-16 10:57:08,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:57:08,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:57:08,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:09,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-16 10:57:09,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:09,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-16 10:57:09,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:09,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-16 10:57:09,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:09,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 10:57:09,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:09,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-16 10:57:09,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:09,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-16 10:57:09,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:10,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-16 10:57:10,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:10,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-16 10:57:10,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:10,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-16 10:57:10,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:10,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-11-16 10:57:10,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:10,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-11-16 10:57:10,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:10,114 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 6 proven. 19 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2022-11-16 10:57:10,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:57:10,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996528841] [2022-11-16 10:57:10,115 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996528841] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 10:57:10,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [971480043] [2022-11-16 10:57:10,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:57:10,116 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:57:10,116 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a357e79c-3ed0-4232-b8ad-4e429590df33/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 10:57:10,117 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a357e79c-3ed0-4232-b8ad-4e429590df33/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 10:57:10,146 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a357e79c-3ed0-4232-b8ad-4e429590df33/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-16 10:57:10,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:10,769 INFO L263 TraceCheckSpWp]: Trace formula consists of 2582 conjuncts, 44 conjunts are in the unsatisfiable core [2022-11-16 10:57:10,776 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:57:11,111 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-16 10:57:11,528 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 65 proven. 8 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-11-16 10:57:11,529 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 10:57:12,072 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 44 proven. 10 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2022-11-16 10:57:12,073 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [971480043] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 10:57:12,073 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 10:57:12,073 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 23 [2022-11-16 10:57:12,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717607826] [2022-11-16 10:57:12,074 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 10:57:12,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-16 10:57:12,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:57:12,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-16 10:57:12,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=441, Unknown=0, NotChecked=0, Total=506 [2022-11-16 10:57:12,077 INFO L87 Difference]: Start difference. First operand 172 states and 226 transitions. Second operand has 23 states, 22 states have (on average 4.636363636363637) internal successors, (102), 21 states have internal predecessors, (102), 4 states have call successors, (23), 4 states have call predecessors, (23), 7 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) [2022-11-16 10:57:15,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 10:57:15,497 INFO L93 Difference]: Finished difference Result 361 states and 499 transitions. [2022-11-16 10:57:15,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-11-16 10:57:15,498 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 4.636363636363637) internal successors, (102), 21 states have internal predecessors, (102), 4 states have call successors, (23), 4 states have call predecessors, (23), 7 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) Word has length 109 [2022-11-16 10:57:15,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 10:57:15,500 INFO L225 Difference]: With dead ends: 361 [2022-11-16 10:57:15,500 INFO L226 Difference]: Without dead ends: 223 [2022-11-16 10:57:15,502 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 226 SyntacticMatches, 3 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 318 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=327, Invalid=1743, Unknown=0, NotChecked=0, Total=2070 [2022-11-16 10:57:15,503 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 288 mSDsluCounter, 717 mSDsCounter, 0 mSdLazyCounter, 1944 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 300 SdHoareTripleChecker+Valid, 775 SdHoareTripleChecker+Invalid, 2336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 1944 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 351 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-16 10:57:15,504 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [300 Valid, 775 Invalid, 2336 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 1944 Invalid, 0 Unknown, 351 Unchecked, 2.2s Time] [2022-11-16 10:57:15,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2022-11-16 10:57:15,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 215. [2022-11-16 10:57:15,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 162 states have (on average 1.191358024691358) internal successors, (193), 169 states have internal predecessors, (193), 32 states have call successors, (32), 15 states have call predecessors, (32), 20 states have return successors, (72), 30 states have call predecessors, (72), 31 states have call successors, (72) [2022-11-16 10:57:15,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 297 transitions. [2022-11-16 10:57:15,549 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 297 transitions. Word has length 109 [2022-11-16 10:57:15,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 10:57:15,550 INFO L495 AbstractCegarLoop]: Abstraction has 215 states and 297 transitions. [2022-11-16 10:57:15,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 4.636363636363637) internal successors, (102), 21 states have internal predecessors, (102), 4 states have call successors, (23), 4 states have call predecessors, (23), 7 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) [2022-11-16 10:57:15,551 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 297 transitions. [2022-11-16 10:57:15,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-11-16 10:57:15,553 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 10:57:15,553 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 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] [2022-11-16 10:57:15,563 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a357e79c-3ed0-4232-b8ad-4e429590df33/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-16 10:57:15,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a357e79c-3ed0-4232-b8ad-4e429590df33/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:57:15,763 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 10:57:15,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:57:15,763 INFO L85 PathProgramCache]: Analyzing trace with hash 1821073806, now seen corresponding path program 1 times [2022-11-16 10:57:15,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:57:15,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120394035] [2022-11-16 10:57:15,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:57:15,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:57:15,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:16,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-16 10:57:16,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:16,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-16 10:57:16,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:16,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-16 10:57:16,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:16,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 10:57:16,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:16,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-16 10:57:16,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:16,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-16 10:57:16,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:16,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-16 10:57:16,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:16,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-16 10:57:16,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:16,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-16 10:57:16,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:16,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-11-16 10:57:16,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:16,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-11-16 10:57:16,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:16,221 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2022-11-16 10:57:16,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:57:16,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120394035] [2022-11-16 10:57:16,222 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120394035] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 10:57:16,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2086140796] [2022-11-16 10:57:16,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:57:16,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:57:16,223 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a357e79c-3ed0-4232-b8ad-4e429590df33/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 10:57:16,227 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a357e79c-3ed0-4232-b8ad-4e429590df33/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 10:57:16,250 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a357e79c-3ed0-4232-b8ad-4e429590df33/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-16 10:57:16,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:16,870 INFO L263 TraceCheckSpWp]: Trace formula consists of 2584 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 10:57:16,873 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:57:16,885 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2022-11-16 10:57:16,885 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 10:57:16,885 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2086140796] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:57:16,885 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 10:57:16,885 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2022-11-16 10:57:16,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604415147] [2022-11-16 10:57:16,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:57:16,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 10:57:16,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:57:16,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 10:57:16,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 10:57:16,890 INFO L87 Difference]: Start difference. First operand 215 states and 297 transitions. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-16 10:57:16,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 10:57:16,929 INFO L93 Difference]: Finished difference Result 388 states and 552 transitions. [2022-11-16 10:57:16,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 10:57:16,930 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 111 [2022-11-16 10:57:16,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 10:57:16,931 INFO L225 Difference]: With dead ends: 388 [2022-11-16 10:57:16,932 INFO L226 Difference]: Without dead ends: 198 [2022-11-16 10:57:16,933 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-16 10:57:16,934 INFO L413 NwaCegarLoop]: 142 mSDtfsCounter, 9 mSDsluCounter, 278 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 420 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 [2022-11-16 10:57:16,934 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 420 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 10:57:16,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2022-11-16 10:57:16,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 195. [2022-11-16 10:57:16,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 144 states have (on average 1.1597222222222223) internal successors, (167), 149 states have internal predecessors, (167), 32 states have call successors, (32), 15 states have call predecessors, (32), 18 states have return successors, (59), 30 states have call predecessors, (59), 31 states have call successors, (59) [2022-11-16 10:57:16,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 258 transitions. [2022-11-16 10:57:16,952 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 258 transitions. Word has length 111 [2022-11-16 10:57:16,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 10:57:16,952 INFO L495 AbstractCegarLoop]: Abstraction has 195 states and 258 transitions. [2022-11-16 10:57:16,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-16 10:57:16,953 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 258 transitions. [2022-11-16 10:57:16,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-11-16 10:57:16,955 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 10:57:16,955 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 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] [2022-11-16 10:57:16,966 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a357e79c-3ed0-4232-b8ad-4e429590df33/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-16 10:57:17,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a357e79c-3ed0-4232-b8ad-4e429590df33/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:57:17,165 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 10:57:17,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:57:17,165 INFO L85 PathProgramCache]: Analyzing trace with hash -1454394670, now seen corresponding path program 1 times [2022-11-16 10:57:17,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:57:17,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767850088] [2022-11-16 10:57:17,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:57:17,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:57:17,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:17,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-16 10:57:17,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:17,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-16 10:57:17,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:17,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-16 10:57:17,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:17,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 10:57:17,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:17,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-16 10:57:17,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:17,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-16 10:57:17,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:17,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-16 10:57:17,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:17,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-16 10:57:17,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:17,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-16 10:57:17,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:17,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-11-16 10:57:17,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:17,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-11-16 10:57:17,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:17,667 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2022-11-16 10:57:17,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:57:17,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767850088] [2022-11-16 10:57:17,668 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767850088] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 10:57:17,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [690116555] [2022-11-16 10:57:17,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:57:17,669 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:57:17,669 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a357e79c-3ed0-4232-b8ad-4e429590df33/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 10:57:17,670 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a357e79c-3ed0-4232-b8ad-4e429590df33/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 10:57:17,675 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a357e79c-3ed0-4232-b8ad-4e429590df33/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-16 10:57:18,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:18,331 INFO L263 TraceCheckSpWp]: Trace formula consists of 2586 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 10:57:18,335 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:57:18,353 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2022-11-16 10:57:18,353 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 10:57:18,354 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [690116555] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:57:18,354 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 10:57:18,354 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2022-11-16 10:57:18,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259829411] [2022-11-16 10:57:18,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:57:18,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 10:57:18,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:57:18,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 10:57:18,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 10:57:18,358 INFO L87 Difference]: Start difference. First operand 195 states and 258 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-16 10:57:18,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 10:57:18,397 INFO L93 Difference]: Finished difference Result 348 states and 481 transitions. [2022-11-16 10:57:18,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 10:57:18,397 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 111 [2022-11-16 10:57:18,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 10:57:18,399 INFO L225 Difference]: With dead ends: 348 [2022-11-16 10:57:18,400 INFO L226 Difference]: Without dead ends: 183 [2022-11-16 10:57:18,401 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-16 10:57:18,402 INFO L413 NwaCegarLoop]: 142 mSDtfsCounter, 34 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 418 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 10:57:18,403 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 418 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 10:57:18,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2022-11-16 10:57:18,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 179. [2022-11-16 10:57:18,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 129 states have (on average 1.1395348837209303) internal successors, (147), 133 states have internal predecessors, (147), 32 states have call successors, (32), 15 states have call predecessors, (32), 17 states have return successors, (53), 30 states have call predecessors, (53), 31 states have call successors, (53) [2022-11-16 10:57:18,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 232 transitions. [2022-11-16 10:57:18,424 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 232 transitions. Word has length 111 [2022-11-16 10:57:18,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 10:57:18,425 INFO L495 AbstractCegarLoop]: Abstraction has 179 states and 232 transitions. [2022-11-16 10:57:18,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-16 10:57:18,425 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 232 transitions. [2022-11-16 10:57:18,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-11-16 10:57:18,428 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 10:57:18,428 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2022-11-16 10:57:18,444 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a357e79c-3ed0-4232-b8ad-4e429590df33/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-16 10:57:18,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a357e79c-3ed0-4232-b8ad-4e429590df33/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:57:18,638 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 10:57:18,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:57:18,639 INFO L85 PathProgramCache]: Analyzing trace with hash -1557492130, now seen corresponding path program 2 times [2022-11-16 10:57:18,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:57:18,639 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879140927] [2022-11-16 10:57:18,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:57:18,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:57:18,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:19,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-16 10:57:19,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:19,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-16 10:57:19,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:19,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-16 10:57:19,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:19,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 10:57:19,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:19,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-16 10:57:19,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:19,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-16 10:57:19,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:19,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-16 10:57:19,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:19,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-16 10:57:19,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:19,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-16 10:57:19,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:19,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-16 10:57:19,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:19,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-16 10:57:19,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:19,875 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 21 proven. 5 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2022-11-16 10:57:19,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:57:19,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879140927] [2022-11-16 10:57:19,876 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879140927] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 10:57:19,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1028486673] [2022-11-16 10:57:19,876 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 10:57:19,876 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:57:19,876 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a357e79c-3ed0-4232-b8ad-4e429590df33/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 10:57:19,878 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a357e79c-3ed0-4232-b8ad-4e429590df33/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 10:57:19,912 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a357e79c-3ed0-4232-b8ad-4e429590df33/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-16 10:57:20,506 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-16 10:57:20,506 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 10:57:20,517 INFO L263 TraceCheckSpWp]: Trace formula consists of 2331 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-16 10:57:20,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:57:20,533 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-16 10:57:21,274 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2022-11-16 10:57:21,275 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 10:57:21,275 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1028486673] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:57:21,275 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 10:57:21,275 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 18 [2022-11-16 10:57:21,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480984383] [2022-11-16 10:57:21,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:57:21,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 10:57:21,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:57:21,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 10:57:21,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=264, Unknown=0, NotChecked=0, Total=306 [2022-11-16 10:57:21,278 INFO L87 Difference]: Start difference. First operand 179 states and 232 transitions. Second operand has 10 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 3 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-16 10:57:21,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 10:57:21,405 INFO L93 Difference]: Finished difference Result 300 states and 377 transitions. [2022-11-16 10:57:21,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 10:57:21,406 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 3 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 115 [2022-11-16 10:57:21,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 10:57:21,408 INFO L225 Difference]: With dead ends: 300 [2022-11-16 10:57:21,409 INFO L226 Difference]: Without dead ends: 196 [2022-11-16 10:57:21,410 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=42, Invalid=264, Unknown=0, NotChecked=0, Total=306 [2022-11-16 10:57:21,411 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 24 mSDsluCounter, 566 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 728 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 91 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 10:57:21,411 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 728 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 91 Unchecked, 0.1s Time] [2022-11-16 10:57:21,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2022-11-16 10:57:21,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 196. [2022-11-16 10:57:21,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 145 states have (on average 1.1379310344827587) internal successors, (165), 149 states have internal predecessors, (165), 32 states have call successors, (32), 16 states have call predecessors, (32), 18 states have return successors, (53), 30 states have call predecessors, (53), 31 states have call successors, (53) [2022-11-16 10:57:21,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 250 transitions. [2022-11-16 10:57:21,429 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 250 transitions. Word has length 115 [2022-11-16 10:57:21,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 10:57:21,429 INFO L495 AbstractCegarLoop]: Abstraction has 196 states and 250 transitions. [2022-11-16 10:57:21,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 3 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-16 10:57:21,430 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 250 transitions. [2022-11-16 10:57:21,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-11-16 10:57:21,432 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 10:57:21,432 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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] [2022-11-16 10:57:21,446 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a357e79c-3ed0-4232-b8ad-4e429590df33/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-16 10:57:21,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a357e79c-3ed0-4232-b8ad-4e429590df33/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:57:21,643 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 10:57:21,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:57:21,644 INFO L85 PathProgramCache]: Analyzing trace with hash -1299326692, now seen corresponding path program 2 times [2022-11-16 10:57:21,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:57:21,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218177801] [2022-11-16 10:57:21,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:57:21,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:57:21,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:22,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-16 10:57:22,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:22,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-16 10:57:22,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:22,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-16 10:57:22,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:22,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 10:57:22,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:22,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-16 10:57:22,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:22,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-16 10:57:22,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:22,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-16 10:57:22,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:22,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-16 10:57:22,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:22,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-16 10:57:22,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:22,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-16 10:57:22,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:22,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-16 10:57:22,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:22,823 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 21 proven. 5 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2022-11-16 10:57:22,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:57:22,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218177801] [2022-11-16 10:57:22,823 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218177801] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 10:57:22,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [971281572] [2022-11-16 10:57:22,824 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 10:57:22,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:57:22,824 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a357e79c-3ed0-4232-b8ad-4e429590df33/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 10:57:22,827 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a357e79c-3ed0-4232-b8ad-4e429590df33/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 10:57:22,875 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a357e79c-3ed0-4232-b8ad-4e429590df33/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-16 10:57:23,492 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-16 10:57:23,492 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 10:57:23,504 INFO L263 TraceCheckSpWp]: Trace formula consists of 2326 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 10:57:23,510 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:57:23,708 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2022-11-16 10:57:23,708 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 10:57:23,709 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [971281572] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:57:23,709 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 10:57:23,709 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2022-11-16 10:57:23,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046284639] [2022-11-16 10:57:23,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:57:23,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 10:57:23,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:57:23,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 10:57:23,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2022-11-16 10:57:23,711 INFO L87 Difference]: Start difference. First operand 196 states and 250 transitions. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2022-11-16 10:57:24,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 10:57:24,002 INFO L93 Difference]: Finished difference Result 352 states and 456 transitions. [2022-11-16 10:57:24,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 10:57:24,003 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) Word has length 115 [2022-11-16 10:57:24,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 10:57:24,005 INFO L225 Difference]: With dead ends: 352 [2022-11-16 10:57:24,005 INFO L226 Difference]: Without dead ends: 187 [2022-11-16 10:57:24,007 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2022-11-16 10:57:24,007 INFO L413 NwaCegarLoop]: 143 mSDtfsCounter, 26 mSDsluCounter, 368 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 511 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 29 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 10:57:24,008 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 511 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 50 Invalid, 0 Unknown, 29 Unchecked, 0.2s Time] [2022-11-16 10:57:24,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2022-11-16 10:57:24,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 187. [2022-11-16 10:57:24,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 137 states have (on average 1.1313868613138687) internal successors, (155), 140 states have internal predecessors, (155), 32 states have call successors, (32), 16 states have call predecessors, (32), 17 states have return successors, (51), 30 states have call predecessors, (51), 31 states have call successors, (51) [2022-11-16 10:57:24,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 238 transitions. [2022-11-16 10:57:24,033 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 238 transitions. Word has length 115 [2022-11-16 10:57:24,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 10:57:24,033 INFO L495 AbstractCegarLoop]: Abstraction has 187 states and 238 transitions. [2022-11-16 10:57:24,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2022-11-16 10:57:24,034 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 238 transitions. [2022-11-16 10:57:24,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-11-16 10:57:24,037 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 10:57:24,038 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:57:24,054 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a357e79c-3ed0-4232-b8ad-4e429590df33/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-16 10:57:24,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a357e79c-3ed0-4232-b8ad-4e429590df33/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-16 10:57:24,248 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 10:57:24,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:57:24,249 INFO L85 PathProgramCache]: Analyzing trace with hash -1225327101, now seen corresponding path program 3 times [2022-11-16 10:57:24,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:57:24,249 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836164951] [2022-11-16 10:57:24,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:57:24,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:57:24,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:25,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-16 10:57:25,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:25,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-16 10:57:25,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:25,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-16 10:57:25,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:25,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 10:57:25,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:25,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-16 10:57:25,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:25,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-16 10:57:25,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:25,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-16 10:57:25,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:25,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-16 10:57:25,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:25,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-16 10:57:25,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:25,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-16 10:57:25,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:25,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-16 10:57:25,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:25,487 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2022-11-16 10:57:25,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:57:25,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836164951] [2022-11-16 10:57:25,488 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836164951] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:57:25,488 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:57:25,489 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-16 10:57:25,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646170379] [2022-11-16 10:57:25,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:57:25,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-16 10:57:25,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:57:25,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-16 10:57:25,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-11-16 10:57:25,491 INFO L87 Difference]: Start difference. First operand 187 states and 238 transitions. Second operand has 11 states, 10 states have (on average 5.1) internal successors, (51), 8 states have internal predecessors, (51), 2 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2022-11-16 10:57:26,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 10:57:26,486 INFO L93 Difference]: Finished difference Result 203 states and 260 transitions. [2022-11-16 10:57:26,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-16 10:57:26,487 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 5.1) internal successors, (51), 8 states have internal predecessors, (51), 2 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) Word has length 117 [2022-11-16 10:57:26,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 10:57:26,489 INFO L225 Difference]: With dead ends: 203 [2022-11-16 10:57:26,489 INFO L226 Difference]: Without dead ends: 201 [2022-11-16 10:57:26,490 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2022-11-16 10:57:26,491 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 105 mSDsluCounter, 422 mSDsCounter, 0 mSdLazyCounter, 905 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 489 SdHoareTripleChecker+Invalid, 931 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 905 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-16 10:57:26,491 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 489 Invalid, 931 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 905 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-16 10:57:26,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2022-11-16 10:57:26,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 193. [2022-11-16 10:57:26,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 142 states have (on average 1.1267605633802817) internal successors, (160), 146 states have internal predecessors, (160), 32 states have call successors, (32), 16 states have call predecessors, (32), 18 states have return successors, (58), 30 states have call predecessors, (58), 31 states have call successors, (58) [2022-11-16 10:57:26,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 250 transitions. [2022-11-16 10:57:26,509 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 250 transitions. Word has length 117 [2022-11-16 10:57:26,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 10:57:26,509 INFO L495 AbstractCegarLoop]: Abstraction has 193 states and 250 transitions. [2022-11-16 10:57:26,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 5.1) internal successors, (51), 8 states have internal predecessors, (51), 2 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2022-11-16 10:57:26,510 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 250 transitions. [2022-11-16 10:57:26,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-11-16 10:57:26,513 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 10:57:26,514 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2022-11-16 10:57:26,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-16 10:57:26,517 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 10:57:26,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:57:26,518 INFO L85 PathProgramCache]: Analyzing trace with hash -524262523, now seen corresponding path program 1 times [2022-11-16 10:57:26,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:57:26,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359424090] [2022-11-16 10:57:26,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:57:26,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:57:26,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:27,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-16 10:57:27,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:27,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-16 10:57:27,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:27,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-16 10:57:27,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:27,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 10:57:27,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:27,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-16 10:57:27,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:27,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-16 10:57:27,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:27,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-16 10:57:27,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:27,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-16 10:57:27,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:27,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-16 10:57:27,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:27,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-16 10:57:27,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:27,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-16 10:57:27,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:27,723 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 21 proven. 5 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2022-11-16 10:57:27,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:57:27,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359424090] [2022-11-16 10:57:27,724 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359424090] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 10:57:27,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1497533687] [2022-11-16 10:57:27,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:57:27,724 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:57:27,724 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a357e79c-3ed0-4232-b8ad-4e429590df33/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 10:57:27,727 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a357e79c-3ed0-4232-b8ad-4e429590df33/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 10:57:27,750 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a357e79c-3ed0-4232-b8ad-4e429590df33/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-16 10:57:28,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:28,394 INFO L263 TraceCheckSpWp]: Trace formula consists of 2598 conjuncts, 34 conjunts are in the unsatisfiable core [2022-11-16 10:57:28,398 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:57:28,579 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 62 proven. 12 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-11-16 10:57:28,580 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 10:57:29,060 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 21 proven. 5 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2022-11-16 10:57:29,060 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1497533687] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 10:57:29,060 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 10:57:29,061 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 15, 12] total 23 [2022-11-16 10:57:29,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204957263] [2022-11-16 10:57:29,061 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 10:57:29,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-16 10:57:29,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:57:29,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-16 10:57:29,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=458, Unknown=0, NotChecked=0, Total=506 [2022-11-16 10:57:29,063 INFO L87 Difference]: Start difference. First operand 193 states and 250 transitions. Second operand has 23 states, 19 states have (on average 4.421052631578948) internal successors, (84), 17 states have internal predecessors, (84), 6 states have call successors, (18), 4 states have call predecessors, (18), 7 states have return successors, (18), 6 states have call predecessors, (18), 5 states have call successors, (18) [2022-11-16 10:57:31,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 10:57:31,228 INFO L93 Difference]: Finished difference Result 353 states and 450 transitions. [2022-11-16 10:57:31,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-16 10:57:31,228 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 19 states have (on average 4.421052631578948) internal successors, (84), 17 states have internal predecessors, (84), 6 states have call successors, (18), 4 states have call predecessors, (18), 7 states have return successors, (18), 6 states have call predecessors, (18), 5 states have call successors, (18) Word has length 117 [2022-11-16 10:57:31,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 10:57:31,230 INFO L225 Difference]: With dead ends: 353 [2022-11-16 10:57:31,230 INFO L226 Difference]: Without dead ends: 200 [2022-11-16 10:57:31,232 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 283 GetRequests, 242 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=163, Invalid=1559, Unknown=0, NotChecked=0, Total=1722 [2022-11-16 10:57:31,232 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 133 mSDsluCounter, 890 mSDsCounter, 0 mSdLazyCounter, 2088 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 955 SdHoareTripleChecker+Invalid, 2120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 2088 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-16 10:57:31,233 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 955 Invalid, 2120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 2088 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-16 10:57:31,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2022-11-16 10:57:31,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 188. [2022-11-16 10:57:31,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 138 states have (on average 1.1304347826086956) internal successors, (156), 141 states have internal predecessors, (156), 32 states have call successors, (32), 16 states have call predecessors, (32), 17 states have return successors, (52), 30 states have call predecessors, (52), 31 states have call successors, (52) [2022-11-16 10:57:31,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 240 transitions. [2022-11-16 10:57:31,247 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 240 transitions. Word has length 117 [2022-11-16 10:57:31,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 10:57:31,247 INFO L495 AbstractCegarLoop]: Abstraction has 188 states and 240 transitions. [2022-11-16 10:57:31,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 19 states have (on average 4.421052631578948) internal successors, (84), 17 states have internal predecessors, (84), 6 states have call successors, (18), 4 states have call predecessors, (18), 7 states have return successors, (18), 6 states have call predecessors, (18), 5 states have call successors, (18) [2022-11-16 10:57:31,248 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 240 transitions. [2022-11-16 10:57:31,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-11-16 10:57:31,250 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 10:57:31,250 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:57:31,267 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a357e79c-3ed0-4232-b8ad-4e429590df33/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-11-16 10:57:31,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a357e79c-3ed0-4232-b8ad-4e429590df33/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-16 10:57:31,461 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 10:57:31,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:57:31,462 INFO L85 PathProgramCache]: Analyzing trace with hash -1017292694, now seen corresponding path program 1 times [2022-11-16 10:57:31,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:57:31,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138684100] [2022-11-16 10:57:31,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:57:31,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:57:31,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:32,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-16 10:57:32,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:32,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-16 10:57:32,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:32,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-16 10:57:32,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:32,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 10:57:32,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:32,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-16 10:57:32,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:32,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-16 10:57:32,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:32,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-16 10:57:32,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:32,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-16 10:57:32,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:32,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-16 10:57:32,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:32,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-11-16 10:57:32,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:32,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-11-16 10:57:32,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:32,855 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2022-11-16 10:57:32,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:57:32,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138684100] [2022-11-16 10:57:32,855 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138684100] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:57:32,856 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:57:32,856 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-16 10:57:32,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830908730] [2022-11-16 10:57:32,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:57:32,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 10:57:32,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:57:32,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 10:57:32,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-16 10:57:32,858 INFO L87 Difference]: Start difference. First operand 188 states and 240 transitions. Second operand has 8 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 3 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-16 10:57:33,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 10:57:33,785 INFO L93 Difference]: Finished difference Result 285 states and 357 transitions. [2022-11-16 10:57:33,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 10:57:33,786 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 3 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 119 [2022-11-16 10:57:33,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 10:57:33,788 INFO L225 Difference]: With dead ends: 285 [2022-11-16 10:57:33,788 INFO L226 Difference]: Without dead ends: 190 [2022-11-16 10:57:33,789 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-11-16 10:57:33,789 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 96 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 633 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 295 SdHoareTripleChecker+Invalid, 661 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 633 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-16 10:57:33,790 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 295 Invalid, 661 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 633 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-16 10:57:33,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2022-11-16 10:57:33,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 188. [2022-11-16 10:57:33,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 138 states have (on average 1.1304347826086956) internal successors, (156), 141 states have internal predecessors, (156), 32 states have call successors, (32), 16 states have call predecessors, (32), 17 states have return successors, (50), 30 states have call predecessors, (50), 31 states have call successors, (50) [2022-11-16 10:57:33,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 238 transitions. [2022-11-16 10:57:33,806 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 238 transitions. Word has length 119 [2022-11-16 10:57:33,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 10:57:33,807 INFO L495 AbstractCegarLoop]: Abstraction has 188 states and 238 transitions. [2022-11-16 10:57:33,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 3 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-16 10:57:33,807 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 238 transitions. [2022-11-16 10:57:33,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-11-16 10:57:33,809 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 10:57:33,810 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 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] [2022-11-16 10:57:33,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-16 10:57:33,810 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 10:57:33,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:57:33,811 INFO L85 PathProgramCache]: Analyzing trace with hash -1564998756, now seen corresponding path program 1 times [2022-11-16 10:57:33,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:57:33,811 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033591690] [2022-11-16 10:57:33,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:57:33,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:57:34,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:35,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-16 10:57:35,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:35,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-16 10:57:35,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:35,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-16 10:57:35,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:35,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 10:57:35,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:35,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-16 10:57:35,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:35,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-16 10:57:35,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:35,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-16 10:57:35,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:36,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-16 10:57:36,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:36,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-16 10:57:36,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:36,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-11-16 10:57:36,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:36,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-11-16 10:57:36,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:36,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 10:57:36,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:36,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 10:57:36,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:36,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-16 10:57:36,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:36,267 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 10 proven. 20 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2022-11-16 10:57:36,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:57:36,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033591690] [2022-11-16 10:57:36,268 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033591690] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 10:57:36,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [470867935] [2022-11-16 10:57:36,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:57:36,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:57:36,269 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a357e79c-3ed0-4232-b8ad-4e429590df33/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 10:57:36,271 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a357e79c-3ed0-4232-b8ad-4e429590df33/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 10:57:36,279 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a357e79c-3ed0-4232-b8ad-4e429590df33/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-16 10:57:36,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:36,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 2680 conjuncts, 42 conjunts are in the unsatisfiable core [2022-11-16 10:57:36,932 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:57:36,966 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 10:57:36,969 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 10:57:37,390 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 19 treesize of output 7 [2022-11-16 10:57:37,396 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-11-16 10:57:37,431 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 93 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-11-16 10:57:37,431 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 10:57:37,431 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [470867935] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:57:37,431 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 10:57:37,432 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [14] total 22 [2022-11-16 10:57:37,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725897428] [2022-11-16 10:57:37,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:57:37,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 10:57:37,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:57:37,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 10:57:37,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=405, Unknown=0, NotChecked=0, Total=462 [2022-11-16 10:57:37,434 INFO L87 Difference]: Start difference. First operand 188 states and 238 transitions. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 9 states have internal predecessors, (83), 4 states have call successors, (16), 3 states have call predecessors, (16), 4 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) [2022-11-16 10:57:38,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 10:57:38,284 INFO L93 Difference]: Finished difference Result 334 states and 412 transitions. [2022-11-16 10:57:38,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-16 10:57:38,285 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 9 states have internal predecessors, (83), 4 states have call successors, (16), 3 states have call predecessors, (16), 4 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) Word has length 129 [2022-11-16 10:57:38,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 10:57:38,287 INFO L225 Difference]: With dead ends: 334 [2022-11-16 10:57:38,288 INFO L226 Difference]: Without dead ends: 196 [2022-11-16 10:57:38,289 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 149 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=113, Invalid=643, Unknown=0, NotChecked=0, Total=756 [2022-11-16 10:57:38,290 INFO L413 NwaCegarLoop]: 136 mSDtfsCounter, 78 mSDsluCounter, 906 mSDsCounter, 0 mSdLazyCounter, 335 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 1042 SdHoareTripleChecker+Invalid, 377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 335 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 39 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-16 10:57:38,290 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 1042 Invalid, 377 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 335 Invalid, 0 Unknown, 39 Unchecked, 0.5s Time] [2022-11-16 10:57:38,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2022-11-16 10:57:38,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 190. [2022-11-16 10:57:38,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 140 states have (on average 1.1214285714285714) internal successors, (157), 143 states have internal predecessors, (157), 32 states have call successors, (32), 16 states have call predecessors, (32), 17 states have return successors, (50), 30 states have call predecessors, (50), 31 states have call successors, (50) [2022-11-16 10:57:38,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 239 transitions. [2022-11-16 10:57:38,308 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 239 transitions. Word has length 129 [2022-11-16 10:57:38,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 10:57:38,309 INFO L495 AbstractCegarLoop]: Abstraction has 190 states and 239 transitions. [2022-11-16 10:57:38,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 9 states have internal predecessors, (83), 4 states have call successors, (16), 3 states have call predecessors, (16), 4 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) [2022-11-16 10:57:38,310 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 239 transitions. [2022-11-16 10:57:38,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-11-16 10:57:38,312 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 10:57:38,313 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 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] [2022-11-16 10:57:38,331 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a357e79c-3ed0-4232-b8ad-4e429590df33/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-16 10:57:38,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a357e79c-3ed0-4232-b8ad-4e429590df33/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:57:38,525 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 10:57:38,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:57:38,525 INFO L85 PathProgramCache]: Analyzing trace with hash 37904781, now seen corresponding path program 2 times [2022-11-16 10:57:38,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:57:38,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398290103] [2022-11-16 10:57:38,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:57:38,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:57:38,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:40,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-16 10:57:40,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:40,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-16 10:57:40,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:40,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-16 10:57:40,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:40,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 10:57:40,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:40,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-16 10:57:40,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:40,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-16 10:57:40,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:40,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-16 10:57:40,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:40,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-16 10:57:40,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:41,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-16 10:57:41,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:41,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-11-16 10:57:41,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:41,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-11-16 10:57:41,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:41,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 10:57:41,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:41,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 10:57:41,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:41,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-11-16 10:57:41,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:41,085 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 10 proven. 20 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2022-11-16 10:57:41,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:57:41,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398290103] [2022-11-16 10:57:41,086 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398290103] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 10:57:41,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2143141378] [2022-11-16 10:57:41,087 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 10:57:41,087 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:57:41,087 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a357e79c-3ed0-4232-b8ad-4e429590df33/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 10:57:41,095 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a357e79c-3ed0-4232-b8ad-4e429590df33/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 10:57:41,122 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a357e79c-3ed0-4232-b8ad-4e429590df33/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-16 10:57:41,819 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 10:57:41,819 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 10:57:41,831 INFO L263 TraceCheckSpWp]: Trace formula consists of 2689 conjuncts, 43 conjunts are in the unsatisfiable core [2022-11-16 10:57:41,835 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:57:42,534 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 25 treesize of output 13 [2022-11-16 10:57:42,538 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 83 proven. 4 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2022-11-16 10:57:42,539 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 10:57:43,150 INFO L321 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2022-11-16 10:57:43,150 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 19 [2022-11-16 10:57:43,204 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 26 proven. 14 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2022-11-16 10:57:43,205 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2143141378] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 10:57:43,205 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 10:57:43,205 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 11] total 31 [2022-11-16 10:57:43,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689611704] [2022-11-16 10:57:43,206 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 10:57:43,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-11-16 10:57:43,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:57:43,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-11-16 10:57:43,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=845, Unknown=0, NotChecked=0, Total=930 [2022-11-16 10:57:43,208 INFO L87 Difference]: Start difference. First operand 190 states and 239 transitions. Second operand has 31 states, 26 states have (on average 5.0) internal successors, (130), 27 states have internal predecessors, (130), 13 states have call successors, (34), 6 states have call predecessors, (34), 10 states have return successors, (31), 11 states have call predecessors, (31), 13 states have call successors, (31) [2022-11-16 10:57:46,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 10:57:46,443 INFO L93 Difference]: Finished difference Result 373 states and 463 transitions. [2022-11-16 10:57:46,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-16 10:57:46,444 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 26 states have (on average 5.0) internal successors, (130), 27 states have internal predecessors, (130), 13 states have call successors, (34), 6 states have call predecessors, (34), 10 states have return successors, (31), 11 states have call predecessors, (31), 13 states have call successors, (31) Word has length 135 [2022-11-16 10:57:46,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 10:57:46,445 INFO L225 Difference]: With dead ends: 373 [2022-11-16 10:57:46,446 INFO L226 Difference]: Without dead ends: 208 [2022-11-16 10:57:46,448 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 336 GetRequests, 282 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 557 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=308, Invalid=2554, Unknown=0, NotChecked=0, Total=2862 [2022-11-16 10:57:46,449 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 362 mSDsluCounter, 537 mSDsCounter, 0 mSdLazyCounter, 2165 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 377 SdHoareTripleChecker+Valid, 587 SdHoareTripleChecker+Invalid, 2400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 2165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 133 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-16 10:57:46,449 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [377 Valid, 587 Invalid, 2400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 2165 Invalid, 0 Unknown, 133 Unchecked, 2.0s Time] [2022-11-16 10:57:46,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2022-11-16 10:57:46,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 194. [2022-11-16 10:57:46,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 143 states have (on average 1.1118881118881119) internal successors, (159), 146 states have internal predecessors, (159), 32 states have call successors, (32), 17 states have call predecessors, (32), 18 states have return successors, (49), 30 states have call predecessors, (49), 31 states have call successors, (49) [2022-11-16 10:57:46,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 240 transitions. [2022-11-16 10:57:46,468 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 240 transitions. Word has length 135 [2022-11-16 10:57:46,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 10:57:46,469 INFO L495 AbstractCegarLoop]: Abstraction has 194 states and 240 transitions. [2022-11-16 10:57:46,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 26 states have (on average 5.0) internal successors, (130), 27 states have internal predecessors, (130), 13 states have call successors, (34), 6 states have call predecessors, (34), 10 states have return successors, (31), 11 states have call predecessors, (31), 13 states have call successors, (31) [2022-11-16 10:57:46,470 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 240 transitions. [2022-11-16 10:57:46,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-11-16 10:57:46,472 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 10:57:46,472 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:57:46,484 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a357e79c-3ed0-4232-b8ad-4e429590df33/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-16 10:57:46,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a357e79c-3ed0-4232-b8ad-4e429590df33/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:57:46,684 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 10:57:46,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:57:46,684 INFO L85 PathProgramCache]: Analyzing trace with hash -1637817810, now seen corresponding path program 1 times [2022-11-16 10:57:46,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:57:46,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689480208] [2022-11-16 10:57:46,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:57:46,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:57:46,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:47,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-16 10:57:47,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:47,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-16 10:57:47,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:47,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-16 10:57:47,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:47,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 10:57:47,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:47,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-16 10:57:47,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:47,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-16 10:57:47,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:47,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-16 10:57:47,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:47,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-16 10:57:47,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:47,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-16 10:57:47,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:47,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-11-16 10:57:47,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:47,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-11-16 10:57:47,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:47,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 10:57:47,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:47,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 10:57:47,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:47,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-11-16 10:57:47,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:47,237 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2022-11-16 10:57:47,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:57:47,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689480208] [2022-11-16 10:57:47,238 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689480208] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:57:47,238 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:57:47,238 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 10:57:47,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133987200] [2022-11-16 10:57:47,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:57:47,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 10:57:47,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:57:47,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 10:57:47,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 10:57:47,241 INFO L87 Difference]: Start difference. First operand 194 states and 240 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-16 10:57:47,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 10:57:47,819 INFO L93 Difference]: Finished difference Result 318 states and 389 transitions. [2022-11-16 10:57:47,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 10:57:47,820 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 140 [2022-11-16 10:57:47,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 10:57:47,822 INFO L225 Difference]: With dead ends: 318 [2022-11-16 10:57:47,822 INFO L226 Difference]: Without dead ends: 198 [2022-11-16 10:57:47,823 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-16 10:57:47,824 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 117 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-16 10:57:47,824 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 144 Invalid, 320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 255 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-16 10:57:47,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2022-11-16 10:57:47,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 195. [2022-11-16 10:57:47,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 144 states have (on average 1.1111111111111112) internal successors, (160), 147 states have internal predecessors, (160), 32 states have call successors, (32), 17 states have call predecessors, (32), 18 states have return successors, (49), 30 states have call predecessors, (49), 31 states have call successors, (49) [2022-11-16 10:57:47,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 241 transitions. [2022-11-16 10:57:47,847 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 241 transitions. Word has length 140 [2022-11-16 10:57:47,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 10:57:47,848 INFO L495 AbstractCegarLoop]: Abstraction has 195 states and 241 transitions. [2022-11-16 10:57:47,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-16 10:57:47,848 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 241 transitions. [2022-11-16 10:57:47,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-11-16 10:57:47,851 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 10:57:47,851 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-11-16 10:57:47,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-16 10:57:47,852 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 10:57:47,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:57:47,852 INFO L85 PathProgramCache]: Analyzing trace with hash 347561328, now seen corresponding path program 1 times [2022-11-16 10:57:47,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:57:47,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482696913] [2022-11-16 10:57:47,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:57:47,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:57:48,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:48,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-16 10:57:48,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:48,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-16 10:57:48,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:48,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-16 10:57:48,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:48,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 10:57:48,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:48,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-16 10:57:48,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:48,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-16 10:57:48,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:48,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-16 10:57:48,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:48,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-16 10:57:48,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:49,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-16 10:57:49,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:49,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-11-16 10:57:49,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:49,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-11-16 10:57:49,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:49,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 10:57:49,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:49,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 10:57:49,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:49,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-11-16 10:57:49,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:49,101 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 14 proven. 16 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2022-11-16 10:57:49,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:57:49,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482696913] [2022-11-16 10:57:49,102 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482696913] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 10:57:49,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1550833257] [2022-11-16 10:57:49,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:57:49,103 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:57:49,103 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a357e79c-3ed0-4232-b8ad-4e429590df33/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 10:57:49,107 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a357e79c-3ed0-4232-b8ad-4e429590df33/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 10:57:49,124 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a357e79c-3ed0-4232-b8ad-4e429590df33/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-16 10:57:49,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:49,846 INFO L263 TraceCheckSpWp]: Trace formula consists of 2722 conjuncts, 64 conjunts are in the unsatisfiable core [2022-11-16 10:57:49,852 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:57:50,660 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 123 proven. 12 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-16 10:57:50,660 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 10:57:51,201 INFO L321 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2022-11-16 10:57:51,201 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 19 [2022-11-16 10:57:51,266 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 30 proven. 42 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2022-11-16 10:57:51,266 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1550833257] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 10:57:51,267 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 10:57:51,267 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 11] total 25 [2022-11-16 10:57:51,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555249573] [2022-11-16 10:57:51,268 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 10:57:51,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-16 10:57:51,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:57:51,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-16 10:57:51,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=532, Unknown=0, NotChecked=0, Total=600 [2022-11-16 10:57:51,270 INFO L87 Difference]: Start difference. First operand 195 states and 241 transitions. Second operand has 25 states, 23 states have (on average 6.434782608695652) internal successors, (148), 21 states have internal predecessors, (148), 5 states have call successors, (29), 6 states have call predecessors, (29), 8 states have return successors, (24), 4 states have call predecessors, (24), 5 states have call successors, (24) [2022-11-16 10:57:54,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 10:57:54,275 INFO L93 Difference]: Finished difference Result 375 states and 460 transitions. [2022-11-16 10:57:54,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-16 10:57:54,276 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 23 states have (on average 6.434782608695652) internal successors, (148), 21 states have internal predecessors, (148), 5 states have call successors, (29), 6 states have call predecessors, (29), 8 states have return successors, (24), 4 states have call predecessors, (24), 5 states have call successors, (24) Word has length 142 [2022-11-16 10:57:54,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 10:57:54,278 INFO L225 Difference]: With dead ends: 375 [2022-11-16 10:57:54,278 INFO L226 Difference]: Without dead ends: 206 [2022-11-16 10:57:54,280 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 349 GetRequests, 298 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 411 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=318, Invalid=2232, Unknown=0, NotChecked=0, Total=2550 [2022-11-16 10:57:54,281 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 240 mSDsluCounter, 562 mSDsCounter, 0 mSdLazyCounter, 1664 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 243 SdHoareTripleChecker+Valid, 617 SdHoareTripleChecker+Invalid, 1967 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 1664 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 206 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-16 10:57:54,281 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [243 Valid, 617 Invalid, 1967 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 1664 Invalid, 0 Unknown, 206 Unchecked, 1.7s Time] [2022-11-16 10:57:54,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2022-11-16 10:57:54,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 195. [2022-11-16 10:57:54,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 144 states have (on average 1.1111111111111112) internal successors, (160), 147 states have internal predecessors, (160), 32 states have call successors, (32), 17 states have call predecessors, (32), 18 states have return successors, (47), 30 states have call predecessors, (47), 31 states have call successors, (47) [2022-11-16 10:57:54,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 239 transitions. [2022-11-16 10:57:54,299 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 239 transitions. Word has length 142 [2022-11-16 10:57:54,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 10:57:54,300 INFO L495 AbstractCegarLoop]: Abstraction has 195 states and 239 transitions. [2022-11-16 10:57:54,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 23 states have (on average 6.434782608695652) internal successors, (148), 21 states have internal predecessors, (148), 5 states have call successors, (29), 6 states have call predecessors, (29), 8 states have return successors, (24), 4 states have call predecessors, (24), 5 states have call successors, (24) [2022-11-16 10:57:54,301 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 239 transitions. [2022-11-16 10:57:54,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-11-16 10:57:54,303 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 10:57:54,304 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:57:54,321 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a357e79c-3ed0-4232-b8ad-4e429590df33/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-16 10:57:54,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a357e79c-3ed0-4232-b8ad-4e429590df33/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:57:54,521 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 10:57:54,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:57:54,521 INFO L85 PathProgramCache]: Analyzing trace with hash -1353114459, now seen corresponding path program 2 times [2022-11-16 10:57:54,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:57:54,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691866948] [2022-11-16 10:57:54,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:57:54,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:57:55,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:58:00,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-16 10:58:00,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:58:00,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-16 10:58:00,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:58:00,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-16 10:58:00,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:58:00,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 10:58:00,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:58:00,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-16 10:58:00,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:58:00,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-16 10:58:00,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:58:00,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-16 10:58:00,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:58:00,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-16 10:58:00,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:58:00,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-16 10:58:00,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:58:00,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-16 10:58:00,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:58:00,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-11-16 10:58:00,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:58:01,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 10:58:01,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:58:01,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 10:58:01,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:58:01,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-11-16 10:58:01,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:58:02,375 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 42 proven. 1 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2022-11-16 10:58:02,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:58:02,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691866948] [2022-11-16 10:58:02,378 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691866948] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 10:58:02,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2032658998] [2022-11-16 10:58:02,378 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 10:58:02,378 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:58:02,379 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a357e79c-3ed0-4232-b8ad-4e429590df33/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 10:58:02,380 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a357e79c-3ed0-4232-b8ad-4e429590df33/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 10:58:02,383 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a357e79c-3ed0-4232-b8ad-4e429590df33/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-16 10:58:03,113 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 10:58:03,113 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 10:58:03,125 INFO L263 TraceCheckSpWp]: Trace formula consists of 2724 conjuncts, 104 conjunts are in the unsatisfiable core [2022-11-16 10:58:03,132 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:58:03,147 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 10:58:03,667 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-16 10:58:03,667 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 [2022-11-16 10:58:03,731 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 [2022-11-16 10:58:05,792 WARN L855 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_byte_buf_clean_up_secure_harness_~#buf~3#1.base_BEFORE_CALL_25| Int)) (not (= |v_ULTIMATE.start_aws_byte_buf_clean_up_secure_harness_~#buf~3#1.base_BEFORE_CALL_25| (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_byte_buf_clean_up_secure_harness_~#buf~3#1.base_BEFORE_CALL_25|) 8)))) is different from true [2022-11-16 10:59:04,272 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 10:59:04,273 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 8 [2022-11-16 10:59:11,216 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_1218 (Array Int Int))) (= (store |c_old(#memory_int)| |c_memset_impl_#in~s.base| v_ArrVal_1218) |c_#memory_int|)) is different from true [2022-11-16 10:59:11,232 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_1218 (Array Int Int))) (= (store |c_old(#memory_int)| |c_my_memset_#in~s.base| v_ArrVal_1218) |c_#memory_int|)) is different from true [2022-11-16 10:59:11,251 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 [2022-11-16 10:59:11,292 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 31 treesize of output 26 [2022-11-16 10:59:18,128 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 12 proven. 106 refuted. 2 times theorem prover too weak. 33 trivial. 4 not checked. [2022-11-16 10:59:18,128 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 10:59:21,094 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2032658998] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 10:59:21,094 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 10:59:21,095 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 30] total 52 [2022-11-16 10:59:21,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136772393] [2022-11-16 10:59:21,095 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 10:59:21,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-11-16 10:59:21,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:59:21,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-11-16 10:59:21,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=2660, Unknown=36, NotChecked=318, Total=3192 [2022-11-16 10:59:21,097 INFO L87 Difference]: Start difference. First operand 195 states and 239 transitions. Second operand has 52 states, 48 states have (on average 3.0416666666666665) internal successors, (146), 42 states have internal predecessors, (146), 21 states have call successors, (31), 12 states have call predecessors, (31), 12 states have return successors, (28), 20 states have call predecessors, (28), 20 states have call successors, (28) [2022-11-16 11:01:10,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:01:10,218 INFO L93 Difference]: Finished difference Result 535 states and 727 transitions. [2022-11-16 11:01:10,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2022-11-16 11:01:10,218 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 48 states have (on average 3.0416666666666665) internal successors, (146), 42 states have internal predecessors, (146), 21 states have call successors, (31), 12 states have call predecessors, (31), 12 states have return successors, (28), 20 states have call predecessors, (28), 20 states have call successors, (28) Word has length 144 [2022-11-16 11:01:10,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:01:10,222 INFO L225 Difference]: With dead ends: 535 [2022-11-16 11:01:10,222 INFO L226 Difference]: Without dead ends: 400 [2022-11-16 11:01:10,226 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 160 SyntacticMatches, 15 SemanticMatches, 102 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 2771 ImplicationChecksByTransitivity, 180.4s TimeCoverageRelationStatistics Valid=601, Invalid=9423, Unknown=88, NotChecked=600, Total=10712 [2022-11-16 11:01:10,227 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 271 mSDsluCounter, 2654 mSDsCounter, 0 mSdLazyCounter, 4559 mSolverCounterSat, 260 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 305 SdHoareTripleChecker+Valid, 2810 SdHoareTripleChecker+Invalid, 7058 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 260 IncrementalHoareTripleChecker+Valid, 4559 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2239 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2022-11-16 11:01:10,227 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [305 Valid, 2810 Invalid, 7058 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [260 Valid, 4559 Invalid, 0 Unknown, 2239 Unchecked, 5.9s Time] [2022-11-16 11:01:10,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 400 states. [2022-11-16 11:01:10,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 400 to 303. [2022-11-16 11:01:10,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 226 states have (on average 1.1017699115044248) internal successors, (249), 230 states have internal predecessors, (249), 48 states have call successors, (48), 25 states have call predecessors, (48), 28 states have return successors, (72), 47 states have call predecessors, (72), 47 states have call successors, (72) [2022-11-16 11:01:10,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 369 transitions. [2022-11-16 11:01:10,261 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 369 transitions. Word has length 144 [2022-11-16 11:01:10,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:01:10,261 INFO L495 AbstractCegarLoop]: Abstraction has 303 states and 369 transitions. [2022-11-16 11:01:10,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 48 states have (on average 3.0416666666666665) internal successors, (146), 42 states have internal predecessors, (146), 21 states have call successors, (31), 12 states have call predecessors, (31), 12 states have return successors, (28), 20 states have call predecessors, (28), 20 states have call successors, (28) [2022-11-16 11:01:10,262 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 369 transitions. [2022-11-16 11:01:10,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-11-16 11:01:10,264 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:01:10,264 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:01:10,276 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a357e79c-3ed0-4232-b8ad-4e429590df33/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-11-16 11:01:10,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a357e79c-3ed0-4232-b8ad-4e429590df33/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:01:10,475 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:01:10,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:01:10,476 INFO L85 PathProgramCache]: Analyzing trace with hash 1485411045, now seen corresponding path program 1 times [2022-11-16 11:01:10,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:01:10,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294802778] [2022-11-16 11:01:10,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:01:10,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:01:10,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:01:12,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-16 11:01:12,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:01:12,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-16 11:01:12,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:01:12,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-16 11:01:12,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:01:12,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:01:12,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:01:12,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-16 11:01:12,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:01:12,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-16 11:01:12,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:01:12,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-16 11:01:12,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:01:12,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-16 11:01:12,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:01:12,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-16 11:01:12,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:01:12,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-16 11:01:12,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:01:12,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-11-16 11:01:12,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:01:12,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:01:12,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:01:12,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:01:12,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:01:12,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-11-16 11:01:12,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:01:12,926 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 0 proven. 67 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2022-11-16 11:01:12,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:01:12,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294802778] [2022-11-16 11:01:12,927 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294802778] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:01:12,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1874559740] [2022-11-16 11:01:12,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:01:12,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:01:12,928 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a357e79c-3ed0-4232-b8ad-4e429590df33/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:01:12,929 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a357e79c-3ed0-4232-b8ad-4e429590df33/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:01:12,933 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a357e79c-3ed0-4232-b8ad-4e429590df33/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-16 11:01:13,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:01:13,609 INFO L263 TraceCheckSpWp]: Trace formula consists of 2748 conjuncts, 46 conjunts are in the unsatisfiable core [2022-11-16 11:01:13,613 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:01:14,448 INFO L321 Elim1Store]: treesize reduction 19, result has 5.0 percent of original size [2022-11-16 11:01:14,448 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 47 treesize of output 1 [2022-11-16 11:01:14,453 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 119 proven. 6 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-16 11:01:14,453 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:01:14,855 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 [2022-11-16 11:01:14,925 INFO L321 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2022-11-16 11:01:14,925 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 24 [2022-11-16 11:01:15,006 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-11-16 11:01:15,007 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1874559740] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:01:15,007 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:01:15,007 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 10] total 21 [2022-11-16 11:01:15,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400589901] [2022-11-16 11:01:15,008 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:01:15,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-16 11:01:15,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:01:15,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-16 11:01:15,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=356, Unknown=0, NotChecked=0, Total=420 [2022-11-16 11:01:15,011 INFO L87 Difference]: Start difference. First operand 303 states and 369 transitions. Second operand has 21 states, 19 states have (on average 8.210526315789474) internal successors, (156), 17 states have internal predecessors, (156), 7 states have call successors, (32), 5 states have call predecessors, (32), 6 states have return successors, (27), 5 states have call predecessors, (27), 7 states have call successors, (27) [2022-11-16 11:01:17,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:01:17,146 INFO L93 Difference]: Finished difference Result 558 states and 680 transitions. [2022-11-16 11:01:17,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-16 11:01:17,147 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 8.210526315789474) internal successors, (156), 17 states have internal predecessors, (156), 7 states have call successors, (32), 5 states have call predecessors, (32), 6 states have return successors, (27), 5 states have call predecessors, (27), 7 states have call successors, (27) Word has length 146 [2022-11-16 11:01:17,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:01:17,150 INFO L225 Difference]: With dead ends: 558 [2022-11-16 11:01:17,150 INFO L226 Difference]: Without dead ends: 361 [2022-11-16 11:01:17,151 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 349 GetRequests, 310 SyntacticMatches, 7 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=198, Invalid=924, Unknown=0, NotChecked=0, Total=1122 [2022-11-16 11:01:17,152 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 213 mSDsluCounter, 314 mSDsCounter, 0 mSdLazyCounter, 1047 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 232 SdHoareTripleChecker+Valid, 375 SdHoareTripleChecker+Invalid, 1613 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 1047 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 460 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-16 11:01:17,152 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [232 Valid, 375 Invalid, 1613 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 1047 Invalid, 0 Unknown, 460 Unchecked, 1.4s Time] [2022-11-16 11:01:17,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states. [2022-11-16 11:01:17,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 336. [2022-11-16 11:01:17,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 336 states, 255 states have (on average 1.1058823529411765) internal successors, (282), 257 states have internal predecessors, (282), 50 states have call successors, (50), 29 states have call predecessors, (50), 30 states have return successors, (73), 49 states have call predecessors, (73), 49 states have call successors, (73) [2022-11-16 11:01:17,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 405 transitions. [2022-11-16 11:01:17,187 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 405 transitions. Word has length 146 [2022-11-16 11:01:17,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:01:17,188 INFO L495 AbstractCegarLoop]: Abstraction has 336 states and 405 transitions. [2022-11-16 11:01:17,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 19 states have (on average 8.210526315789474) internal successors, (156), 17 states have internal predecessors, (156), 7 states have call successors, (32), 5 states have call predecessors, (32), 6 states have return successors, (27), 5 states have call predecessors, (27), 7 states have call successors, (27) [2022-11-16 11:01:17,188 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 405 transitions. [2022-11-16 11:01:17,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-11-16 11:01:17,191 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:01:17,191 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:01:17,208 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a357e79c-3ed0-4232-b8ad-4e429590df33/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-11-16 11:01:17,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a357e79c-3ed0-4232-b8ad-4e429590df33/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:01:17,402 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:01:17,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:01:17,403 INFO L85 PathProgramCache]: Analyzing trace with hash 1391376613, now seen corresponding path program 2 times [2022-11-16 11:01:17,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:01:17,403 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637628374] [2022-11-16 11:01:17,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:01:17,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:01:17,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:01:19,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-16 11:01:19,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:01:19,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-16 11:01:19,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:01:19,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-16 11:01:19,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:01:19,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:01:19,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:01:19,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-16 11:01:19,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:01:19,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-16 11:01:19,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:01:19,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-16 11:01:19,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:01:19,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-16 11:01:19,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:01:19,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-16 11:01:19,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:01:19,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-16 11:01:19,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:01:19,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-11-16 11:01:19,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:01:19,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:01:19,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:01:19,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:01:19,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:01:19,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-11-16 11:01:19,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:01:19,686 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 0 proven. 67 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2022-11-16 11:01:19,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:01:19,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637628374] [2022-11-16 11:01:19,687 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637628374] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:01:19,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1950965816] [2022-11-16 11:01:19,688 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:01:19,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:01:19,688 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a357e79c-3ed0-4232-b8ad-4e429590df33/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:01:19,689 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a357e79c-3ed0-4232-b8ad-4e429590df33/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:01:19,705 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a357e79c-3ed0-4232-b8ad-4e429590df33/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-11-16 11:01:20,734 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 11:01:20,735 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:01:20,747 INFO L263 TraceCheckSpWp]: Trace formula consists of 2748 conjuncts, 48 conjunts are in the unsatisfiable core [2022-11-16 11:01:20,754 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:01:22,124 INFO L321 Elim1Store]: treesize reduction 19, result has 5.0 percent of original size [2022-11-16 11:01:22,125 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 1 [2022-11-16 11:01:22,128 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 121 proven. 22 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-11-16 11:01:22,128 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:01:22,575 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 29 treesize of output 17 [2022-11-16 11:01:22,683 INFO L321 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2022-11-16 11:01:22,684 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 25 [2022-11-16 11:01:22,760 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 16 proven. 60 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-11-16 11:01:22,760 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1950965816] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:01:22,760 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:01:22,760 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 14, 12] total 25 [2022-11-16 11:01:22,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285587006] [2022-11-16 11:01:22,761 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:01:22,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-16 11:01:22,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:01:22,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-16 11:01:22,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=524, Unknown=0, NotChecked=0, Total=600 [2022-11-16 11:01:22,766 INFO L87 Difference]: Start difference. First operand 336 states and 405 transitions. Second operand has 25 states, 23 states have (on average 7.434782608695652) internal successors, (171), 19 states have internal predecessors, (171), 9 states have call successors, (36), 7 states have call predecessors, (36), 6 states have return successors, (30), 7 states have call predecessors, (30), 9 states have call successors, (30) [2022-11-16 11:01:26,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:01:26,820 INFO L93 Difference]: Finished difference Result 623 states and 779 transitions. [2022-11-16 11:01:26,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-16 11:01:26,821 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 23 states have (on average 7.434782608695652) internal successors, (171), 19 states have internal predecessors, (171), 9 states have call successors, (36), 7 states have call predecessors, (36), 6 states have return successors, (30), 7 states have call predecessors, (30), 9 states have call successors, (30) Word has length 146 [2022-11-16 11:01:26,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:01:26,824 INFO L225 Difference]: With dead ends: 623 [2022-11-16 11:01:26,825 INFO L226 Difference]: Without dead ends: 414 [2022-11-16 11:01:26,827 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 302 SyntacticMatches, 10 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 426 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=267, Invalid=1625, Unknown=0, NotChecked=0, Total=1892 [2022-11-16 11:01:26,828 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 214 mSDsluCounter, 470 mSDsCounter, 0 mSdLazyCounter, 2307 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 543 SdHoareTripleChecker+Invalid, 2906 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 2307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 466 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-11-16 11:01:26,828 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [237 Valid, 543 Invalid, 2906 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 2307 Invalid, 0 Unknown, 466 Unchecked, 2.8s Time] [2022-11-16 11:01:26,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2022-11-16 11:01:26,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 356. [2022-11-16 11:01:26,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 356 states, 271 states have (on average 1.1070110701107012) internal successors, (300), 272 states have internal predecessors, (300), 53 states have call successors, (53), 32 states have call predecessors, (53), 31 states have return successors, (77), 51 states have call predecessors, (77), 52 states have call successors, (77) [2022-11-16 11:01:26,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 430 transitions. [2022-11-16 11:01:26,879 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 430 transitions. Word has length 146 [2022-11-16 11:01:26,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:01:26,879 INFO L495 AbstractCegarLoop]: Abstraction has 356 states and 430 transitions. [2022-11-16 11:01:26,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 23 states have (on average 7.434782608695652) internal successors, (171), 19 states have internal predecessors, (171), 9 states have call successors, (36), 7 states have call predecessors, (36), 6 states have return successors, (30), 7 states have call predecessors, (30), 9 states have call successors, (30) [2022-11-16 11:01:26,880 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 430 transitions. [2022-11-16 11:01:26,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-11-16 11:01:26,882 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:01:26,883 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2022-11-16 11:01:26,897 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a357e79c-3ed0-4232-b8ad-4e429590df33/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2022-11-16 11:01:27,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a357e79c-3ed0-4232-b8ad-4e429590df33/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-11-16 11:01:27,098 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:01:27,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:01:27,098 INFO L85 PathProgramCache]: Analyzing trace with hash -930425305, now seen corresponding path program 3 times [2022-11-16 11:01:27,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:01:27,098 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363917617] [2022-11-16 11:01:27,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:01:27,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:01:28,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:01:32,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-16 11:01:32,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:01:32,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-16 11:01:32,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:01:32,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-16 11:01:32,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:01:32,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:01:32,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:01:32,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-16 11:01:32,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:01:32,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-16 11:01:32,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:01:32,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-16 11:01:32,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:01:32,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-16 11:01:32,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:01:32,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-16 11:01:32,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:01:32,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-16 11:01:32,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:01:32,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-11-16 11:01:32,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:01:33,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:01:33,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:01:34,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:01:34,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:01:34,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-11-16 11:01:34,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:01:34,938 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 42 proven. 4 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2022-11-16 11:01:34,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:01:34,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363917617] [2022-11-16 11:01:34,938 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363917617] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:01:34,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1137802099] [2022-11-16 11:01:34,939 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 11:01:34,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:01:34,939 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a357e79c-3ed0-4232-b8ad-4e429590df33/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:01:34,940 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a357e79c-3ed0-4232-b8ad-4e429590df33/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:01:34,974 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a357e79c-3ed0-4232-b8ad-4e429590df33/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-11-16 11:01:36,297 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-11-16 11:01:36,297 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:01:36,310 INFO L263 TraceCheckSpWp]: Trace formula consists of 2743 conjuncts, 105 conjunts are in the unsatisfiable core [2022-11-16 11:01:36,317 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:01:36,330 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 11:01:36,627 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-16 11:01:36,628 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 [2022-11-16 11:01:36,708 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 11 treesize of output 7 [2022-11-16 11:01:38,813 WARN L855 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_byte_buf_clean_up_secure_harness_~#buf~3#1.base_BEFORE_CALL_36| Int)) (not (= (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_byte_buf_clean_up_secure_harness_~#buf~3#1.base_BEFORE_CALL_36|) 8) |v_ULTIMATE.start_aws_byte_buf_clean_up_secure_harness_~#buf~3#1.base_BEFORE_CALL_36|))) is different from true [2022-11-16 11:01:40,950 WARN L855 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_byte_buf_clean_up_secure_harness_~#buf~3#1.base_BEFORE_CALL_37| Int)) (not (= |v_ULTIMATE.start_aws_byte_buf_clean_up_secure_harness_~#buf~3#1.base_BEFORE_CALL_37| (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_byte_buf_clean_up_secure_harness_~#buf~3#1.base_BEFORE_CALL_37|) 8)))) is different from true [2022-11-16 11:01:43,135 WARN L855 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_byte_buf_clean_up_secure_~buf#1.base_BEFORE_CALL_21| Int)) (not (= (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_byte_buf_clean_up_secure_~buf#1.base_BEFORE_CALL_21|) 8) |v_ULTIMATE.start_aws_byte_buf_clean_up_secure_~buf#1.base_BEFORE_CALL_21|))) is different from true [2022-11-16 11:01:45,271 WARN L855 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_byte_buf_clean_up_secure_~buf#1.base_BEFORE_CALL_22| Int)) (not (= (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_byte_buf_clean_up_secure_~buf#1.base_BEFORE_CALL_22|) 8) |v_ULTIMATE.start_aws_byte_buf_clean_up_secure_~buf#1.base_BEFORE_CALL_22|))) is different from true [2022-11-16 11:01:47,506 WARN L855 $PredicateComparison]: unable to prove that (exists ((|v_aws_byte_buf_secure_zero_~buf#1.base_BEFORE_CALL_26| Int)) (not (= |v_aws_byte_buf_secure_zero_~buf#1.base_BEFORE_CALL_26| (select (select |c_#memory_$Pointer$.base| |v_aws_byte_buf_secure_zero_~buf#1.base_BEFORE_CALL_26|) 8)))) is different from true [2022-11-16 11:02:12,071 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 11:02:12,072 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 8 [2022-11-16 11:02:17,917 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_1597 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |c_memset_impl_#in~s.base| v_ArrVal_1597))) is different from true [2022-11-16 11:02:17,937 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_1597 (Array Int Int))) (= (store |c_old(#memory_int)| |c_my_memset_#in~s.base| v_ArrVal_1597) |c_#memory_int|)) is different from true [2022-11-16 11:02:17,953 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 [2022-11-16 11:02:18,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:02:18,078 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 24 treesize of output 23 [2022-11-16 11:02:37,306 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 12 proven. 29 refuted. 10 times theorem prover too weak. 4 trivial. 105 not checked. [2022-11-16 11:02:37,306 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:02:40,167 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1137802099] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:02:40,167 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:02:40,168 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 36] total 59 [2022-11-16 11:02:40,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036631356] [2022-11-16 11:02:40,168 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:02:40,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2022-11-16 11:02:40,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:02:40,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2022-11-16 11:02:40,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=199, Invalid=2979, Unknown=42, NotChecked=812, Total=4032 [2022-11-16 11:02:40,170 INFO L87 Difference]: Start difference. First operand 356 states and 430 transitions. Second operand has 59 states, 55 states have (on average 3.090909090909091) internal successors, (170), 50 states have internal predecessors, (170), 18 states have call successors, (30), 16 states have call predecessors, (30), 16 states have return successors, (27), 18 states have call predecessors, (27), 17 states have call successors, (27) [2022-11-16 11:04:43,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:04:43,286 INFO L93 Difference]: Finished difference Result 575 states and 715 transitions. [2022-11-16 11:04:43,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-11-16 11:04:43,287 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 55 states have (on average 3.090909090909091) internal successors, (170), 50 states have internal predecessors, (170), 18 states have call successors, (30), 16 states have call predecessors, (30), 16 states have return successors, (27), 18 states have call predecessors, (27), 17 states have call successors, (27) Word has length 146 [2022-11-16 11:04:43,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:04:43,319 INFO L225 Difference]: With dead ends: 575 [2022-11-16 11:04:43,319 INFO L226 Difference]: Without dead ends: 456 [2022-11-16 11:04:43,322 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 160 SyntacticMatches, 14 SemanticMatches, 92 ConstructedPredicates, 7 IntricatePredicates, 0 DeprecatedPredicates, 1516 ImplicationChecksByTransitivity, 182.2s TimeCoverageRelationStatistics Valid=471, Invalid=6951, Unknown=88, NotChecked=1232, Total=8742 [2022-11-16 11:04:43,325 INFO L413 NwaCegarLoop]: 92 mSDtfsCounter, 227 mSDsluCounter, 1386 mSDsCounter, 0 mSdLazyCounter, 3889 mSolverCounterSat, 239 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 1478 SdHoareTripleChecker+Invalid, 7638 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 239 IncrementalHoareTripleChecker+Valid, 3889 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3510 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-11-16 11:04:43,327 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [234 Valid, 1478 Invalid, 7638 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [239 Valid, 3889 Invalid, 0 Unknown, 3510 Unchecked, 4.6s Time] [2022-11-16 11:04:43,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 456 states. [2022-11-16 11:04:43,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 456 to 412. [2022-11-16 11:04:43,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 412 states, 310 states have (on average 1.1096774193548387) internal successors, (344), 311 states have internal predecessors, (344), 65 states have call successors, (65), 37 states have call predecessors, (65), 36 states have return successors, (96), 63 states have call predecessors, (96), 64 states have call successors, (96) [2022-11-16 11:04:43,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 505 transitions. [2022-11-16 11:04:43,386 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 505 transitions. Word has length 146 [2022-11-16 11:04:43,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:04:43,386 INFO L495 AbstractCegarLoop]: Abstraction has 412 states and 505 transitions. [2022-11-16 11:04:43,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 55 states have (on average 3.090909090909091) internal successors, (170), 50 states have internal predecessors, (170), 18 states have call successors, (30), 16 states have call predecessors, (30), 16 states have return successors, (27), 18 states have call predecessors, (27), 17 states have call successors, (27) [2022-11-16 11:04:43,387 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 505 transitions. [2022-11-16 11:04:43,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-11-16 11:04:43,390 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:04:43,391 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:04:43,410 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a357e79c-3ed0-4232-b8ad-4e429590df33/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-11-16 11:04:43,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a357e79c-3ed0-4232-b8ad-4e429590df33/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-11-16 11:04:43,609 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:04:43,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:04:43,609 INFO L85 PathProgramCache]: Analyzing trace with hash 1953791587, now seen corresponding path program 1 times [2022-11-16 11:04:43,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:04:43,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176599356] [2022-11-16 11:04:43,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:04:43,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:04:44,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:04:48,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-16 11:04:48,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:04:48,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-16 11:04:48,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:04:48,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-16 11:04:48,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:04:48,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:04:48,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:04:48,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-16 11:04:48,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:04:48,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-16 11:04:48,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:04:48,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-16 11:04:48,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:04:48,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-16 11:04:48,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:04:48,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-16 11:04:48,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:04:49,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-16 11:04:49,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:04:49,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-11-16 11:04:49,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:04:49,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:04:49,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:04:50,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:04:50,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:04:50,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-11-16 11:04:50,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:04:50,582 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 30 proven. 82 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2022-11-16 11:04:50,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:04:50,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176599356] [2022-11-16 11:04:50,582 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176599356] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:04:50,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [165186039] [2022-11-16 11:04:50,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:04:50,583 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:04:50,583 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a357e79c-3ed0-4232-b8ad-4e429590df33/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:04:50,584 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a357e79c-3ed0-4232-b8ad-4e429590df33/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:04:50,586 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a357e79c-3ed0-4232-b8ad-4e429590df33/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-11-16 11:04:51,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:04:51,264 INFO L263 TraceCheckSpWp]: Trace formula consists of 2777 conjuncts, 99 conjunts are in the unsatisfiable core [2022-11-16 11:04:51,271 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:04:51,572 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 [2022-11-16 11:04:53,654 WARN L855 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_byte_buf_clean_up_secure_harness_~#buf~3#1.base_BEFORE_CALL_41| Int)) (<= (+ (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_byte_buf_clean_up_secure_harness_~#buf~3#1.base_BEFORE_CALL_41|) 8) 2) |v_ULTIMATE.start_aws_byte_buf_clean_up_secure_harness_~#buf~3#1.base_BEFORE_CALL_41|)) is different from true [2022-11-16 11:04:55,822 WARN L855 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_byte_buf_clean_up_secure_harness_~#buf~3#1.base_BEFORE_CALL_42| Int)) (<= (+ 2 (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_byte_buf_clean_up_secure_harness_~#buf~3#1.base_BEFORE_CALL_42|) 8)) |v_ULTIMATE.start_aws_byte_buf_clean_up_secure_harness_~#buf~3#1.base_BEFORE_CALL_42|)) is different from true [2022-11-16 11:04:58,015 WARN L855 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_byte_buf_clean_up_secure_~buf#1.base_BEFORE_CALL_24| Int)) (<= (+ 2 (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_byte_buf_clean_up_secure_~buf#1.base_BEFORE_CALL_24|) 8)) |v_ULTIMATE.start_aws_byte_buf_clean_up_secure_~buf#1.base_BEFORE_CALL_24|)) is different from true [2022-11-16 11:05:00,169 WARN L855 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_byte_buf_clean_up_secure_~buf#1.base_BEFORE_CALL_25| Int)) (<= (+ (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_byte_buf_clean_up_secure_~buf#1.base_BEFORE_CALL_25|) 8) 2) |v_ULTIMATE.start_aws_byte_buf_clean_up_secure_~buf#1.base_BEFORE_CALL_25|)) is different from true [2022-11-16 11:05:02,428 WARN L855 $PredicateComparison]: unable to prove that (exists ((|v_aws_byte_buf_secure_zero_~buf#1.base_BEFORE_CALL_31| Int)) (<= (+ 2 (select (select |c_#memory_$Pointer$.base| |v_aws_byte_buf_secure_zero_~buf#1.base_BEFORE_CALL_31|) 8)) |v_aws_byte_buf_secure_zero_~buf#1.base_BEFORE_CALL_31|)) is different from true [2022-11-16 11:05:11,281 WARN L855 $PredicateComparison]: unable to prove that (exists ((|v_aws_byte_buf_secure_zero_~buf#1.base_BEFORE_CALL_32| Int)) (and (not (= 0 (mod (select (select |c_#memory_int| |v_aws_byte_buf_secure_zero_~buf#1.base_BEFORE_CALL_32|) 16) 18446744073709551616))) (<= (+ 2 (select (select |c_#memory_$Pointer$.base| |v_aws_byte_buf_secure_zero_~buf#1.base_BEFORE_CALL_32|) 8)) |v_aws_byte_buf_secure_zero_~buf#1.base_BEFORE_CALL_32|))) is different from true [2022-11-16 11:05:11,497 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 11:05:11,497 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 9 [2022-11-16 11:05:12,219 WARN L855 $PredicateComparison]: unable to prove that (exists ((memset_impl_~sp~0.base Int)) (and (exists ((v_ArrVal_1765 (Array Int Int))) (= (store |c_old(#memory_int)| memset_impl_~sp~0.base v_ArrVal_1765) |c_#memory_int|)) (<= memset_impl_~sp~0.base |c_memset_impl_#in~s.base|))) is different from true [2022-11-16 11:05:12,268 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_1765 (Array Int Int)) (memset_impl_~sp~0.base Int)) (and (<= memset_impl_~sp~0.base |c_my_memset_#in~s.base|) (= (store |c_old(#memory_int)| memset_impl_~sp~0.base v_ArrVal_1765) |c_#memory_int|))) is different from true [2022-11-16 11:05:12,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:05:12,295 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 [2022-11-16 11:05:12,349 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 31 treesize of output 26 [2022-11-16 11:05:17,387 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 24 proven. 14 refuted. 14 times theorem prover too weak. 14 trivial. 99 not checked. [2022-11-16 11:05:17,388 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:05:18,060 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1775 (Array Int Int)) (v_memset_impl_~sp~0.base_34 Int)) (or (< |c_aws_byte_buf_secure_zero_aws_secure_zero_~pBuf#1.base| v_memset_impl_~sp~0.base_34) (not (= (mod (select (select (store |c_#memory_int| v_memset_impl_~sp~0.base_34 v_ArrVal_1775) |c_aws_byte_buf_secure_zero_~buf#1.base|) (+ 16 |c_aws_byte_buf_secure_zero_~buf#1.offset|)) 18446744073709551616) 0)))) is different from false [2022-11-16 11:05:18,062 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [165186039] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:05:18,062 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:05:18,062 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 33] total 67 [2022-11-16 11:05:18,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993650470] [2022-11-16 11:05:18,062 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:05:18,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2022-11-16 11:05:18,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:05:18,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2022-11-16 11:05:18,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=223, Invalid=3707, Unknown=12, NotChecked=1170, Total=5112 [2022-11-16 11:05:18,066 INFO L87 Difference]: Start difference. First operand 412 states and 505 transitions. Second operand has 67 states, 60 states have (on average 3.4) internal successors, (204), 56 states have internal predecessors, (204), 23 states have call successors, (31), 14 states have call predecessors, (31), 18 states have return successors, (28), 20 states have call predecessors, (28), 22 states have call successors, (28) [2022-11-16 11:07:19,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:07:19,500 INFO L93 Difference]: Finished difference Result 591 states and 724 transitions. [2022-11-16 11:07:19,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-11-16 11:07:19,501 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 60 states have (on average 3.4) internal successors, (204), 56 states have internal predecessors, (204), 23 states have call successors, (31), 14 states have call predecessors, (31), 18 states have return successors, (28), 20 states have call predecessors, (28), 22 states have call successors, (28) Word has length 148 [2022-11-16 11:07:19,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:07:19,505 INFO L225 Difference]: With dead ends: 591 [2022-11-16 11:07:19,505 INFO L226 Difference]: Without dead ends: 457 [2022-11-16 11:07:19,510 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 168 SyntacticMatches, 10 SemanticMatches, 116 ConstructedPredicates, 9 IntricatePredicates, 0 DeprecatedPredicates, 3019 ImplicationChecksByTransitivity, 144.0s TimeCoverageRelationStatistics Valid=704, Invalid=10996, Unknown=108, NotChecked=1998, Total=13806 [2022-11-16 11:07:19,511 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 384 mSDsluCounter, 1301 mSDsCounter, 0 mSdLazyCounter, 4091 mSolverCounterSat, 260 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 390 SdHoareTripleChecker+Valid, 1358 SdHoareTripleChecker+Invalid, 6990 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 260 IncrementalHoareTripleChecker+Valid, 4091 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2639 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-11-16 11:07:19,511 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [390 Valid, 1358 Invalid, 6990 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [260 Valid, 4091 Invalid, 0 Unknown, 2639 Unchecked, 4.3s Time] [2022-11-16 11:07:19,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 457 states. [2022-11-16 11:07:19,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 457 to 379. [2022-11-16 11:07:19,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 285 states have (on average 1.087719298245614) internal successors, (310), 287 states have internal predecessors, (310), 60 states have call successors, (60), 34 states have call predecessors, (60), 33 states have return successors, (78), 57 states have call predecessors, (78), 59 states have call successors, (78) [2022-11-16 11:07:19,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 448 transitions. [2022-11-16 11:07:19,564 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 448 transitions. Word has length 148 [2022-11-16 11:07:19,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:07:19,565 INFO L495 AbstractCegarLoop]: Abstraction has 379 states and 448 transitions. [2022-11-16 11:07:19,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 60 states have (on average 3.4) internal successors, (204), 56 states have internal predecessors, (204), 23 states have call successors, (31), 14 states have call predecessors, (31), 18 states have return successors, (28), 20 states have call predecessors, (28), 22 states have call successors, (28) [2022-11-16 11:07:19,566 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 448 transitions. [2022-11-16 11:07:19,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-11-16 11:07:19,568 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:07:19,569 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 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] [2022-11-16 11:07:19,581 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a357e79c-3ed0-4232-b8ad-4e429590df33/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-11-16 11:07:19,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a357e79c-3ed0-4232-b8ad-4e429590df33/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-11-16 11:07:19,781 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:07:19,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:07:19,781 INFO L85 PathProgramCache]: Analyzing trace with hash 2117862313, now seen corresponding path program 1 times [2022-11-16 11:07:19,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:07:19,781 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57474264] [2022-11-16 11:07:19,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:07:19,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:07:19,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:20,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-16 11:07:20,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:20,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-16 11:07:20,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:20,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-16 11:07:20,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:20,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:07:20,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:20,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-16 11:07:20,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:20,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-16 11:07:20,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:20,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-16 11:07:20,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:20,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-16 11:07:20,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:20,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-16 11:07:20,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:20,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:07:20,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:20,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-16 11:07:20,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:20,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-16 11:07:20,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:20,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-16 11:07:20,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:20,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-11-16 11:07:20,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:21,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-11-16 11:07:21,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:21,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-11-16 11:07:21,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:21,030 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 14 proven. 54 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2022-11-16 11:07:21,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:07:21,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57474264] [2022-11-16 11:07:21,031 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57474264] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:07:21,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1325492907] [2022-11-16 11:07:21,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:07:21,031 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:07:21,031 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a357e79c-3ed0-4232-b8ad-4e429590df33/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:07:21,033 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a357e79c-3ed0-4232-b8ad-4e429590df33/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:07:21,035 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a357e79c-3ed0-4232-b8ad-4e429590df33/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-11-16 11:07:21,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:21,691 INFO L263 TraceCheckSpWp]: Trace formula consists of 2731 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-16 11:07:21,695 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:07:21,876 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2022-11-16 11:07:21,876 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:07:21,876 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1325492907] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:07:21,876 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:07:21,876 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [12] total 18 [2022-11-16 11:07:21,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779189986] [2022-11-16 11:07:21,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:07:21,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 11:07:21,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:07:21,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 11:07:21,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=264, Unknown=0, NotChecked=0, Total=306 [2022-11-16 11:07:21,878 INFO L87 Difference]: Start difference. First operand 379 states and 448 transitions. Second operand has 8 states, 7 states have (on average 10.285714285714286) internal successors, (72), 8 states have internal predecessors, (72), 5 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 4 states have call predecessors, (16), 5 states have call successors, (16) [2022-11-16 11:07:22,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:07:22,188 INFO L93 Difference]: Finished difference Result 460 states and 542 transitions. [2022-11-16 11:07:22,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 11:07:22,189 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.285714285714286) internal successors, (72), 8 states have internal predecessors, (72), 5 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 4 states have call predecessors, (16), 5 states have call successors, (16) Word has length 150 [2022-11-16 11:07:22,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:07:22,192 INFO L225 Difference]: With dead ends: 460 [2022-11-16 11:07:22,192 INFO L226 Difference]: Without dead ends: 376 [2022-11-16 11:07:22,193 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=76, Invalid=430, Unknown=0, NotChecked=0, Total=506 [2022-11-16 11:07:22,194 INFO L413 NwaCegarLoop]: 114 mSDtfsCounter, 191 mSDsluCounter, 492 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 606 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:07:22,194 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [191 Valid, 606 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 11:07:22,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2022-11-16 11:07:22,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 376. [2022-11-16 11:07:22,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 376 states, 283 states have (on average 1.0742049469964665) internal successors, (304), 284 states have internal predecessors, (304), 60 states have call successors, (60), 34 states have call predecessors, (60), 32 states have return successors, (77), 57 states have call predecessors, (77), 59 states have call successors, (77) [2022-11-16 11:07:22,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 441 transitions. [2022-11-16 11:07:22,243 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 441 transitions. Word has length 150 [2022-11-16 11:07:22,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:07:22,243 INFO L495 AbstractCegarLoop]: Abstraction has 376 states and 441 transitions. [2022-11-16 11:07:22,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.285714285714286) internal successors, (72), 8 states have internal predecessors, (72), 5 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 4 states have call predecessors, (16), 5 states have call successors, (16) [2022-11-16 11:07:22,244 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 441 transitions. [2022-11-16 11:07:22,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-11-16 11:07:22,247 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:07:22,247 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 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] [2022-11-16 11:07:22,257 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a357e79c-3ed0-4232-b8ad-4e429590df33/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-11-16 11:07:22,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a357e79c-3ed0-4232-b8ad-4e429590df33/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-11-16 11:07:22,453 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:07:22,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:07:22,453 INFO L85 PathProgramCache]: Analyzing trace with hash 1763335316, now seen corresponding path program 1 times [2022-11-16 11:07:22,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:07:22,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061220159] [2022-11-16 11:07:22,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:07:22,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:07:22,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:23,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-16 11:07:23,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:23,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-16 11:07:23,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:23,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-16 11:07:23,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:23,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:07:23,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:23,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-16 11:07:23,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:23,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-16 11:07:23,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:23,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-16 11:07:23,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:23,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-16 11:07:23,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:23,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-16 11:07:23,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:23,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:07:23,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:23,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-16 11:07:23,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:23,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-16 11:07:23,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:23,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-16 11:07:23,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:23,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-11-16 11:07:23,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:23,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-11-16 11:07:23,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:23,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-11-16 11:07:23,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:23,394 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 211 trivial. 0 not checked. [2022-11-16 11:07:23,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:07:23,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061220159] [2022-11-16 11:07:23,394 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061220159] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:07:23,394 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:07:23,395 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 11:07:23,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750284215] [2022-11-16 11:07:23,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:07:23,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 11:07:23,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:07:23,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 11:07:23,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-16 11:07:23,397 INFO L87 Difference]: Start difference. First operand 376 states and 441 transitions. Second operand has 10 states, 9 states have (on average 6.555555555555555) internal successors, (59), 6 states have internal predecessors, (59), 2 states have call successors, (17), 4 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) [2022-11-16 11:07:24,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:07:24,422 INFO L93 Difference]: Finished difference Result 386 states and 451 transitions. [2022-11-16 11:07:24,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 11:07:24,423 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 6.555555555555555) internal successors, (59), 6 states have internal predecessors, (59), 2 states have call successors, (17), 4 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) Word has length 156 [2022-11-16 11:07:24,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:07:24,428 INFO L225 Difference]: With dead ends: 386 [2022-11-16 11:07:24,428 INFO L226 Difference]: Without dead ends: 384 [2022-11-16 11:07:24,429 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2022-11-16 11:07:24,430 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 136 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 807 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 352 SdHoareTripleChecker+Invalid, 876 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 807 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-16 11:07:24,430 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 352 Invalid, 876 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 807 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-16 11:07:24,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2022-11-16 11:07:24,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 381. [2022-11-16 11:07:24,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 286 states have (on average 1.0734265734265733) internal successors, (307), 287 states have internal predecessors, (307), 61 states have call successors, (61), 35 states have call predecessors, (61), 33 states have return successors, (78), 58 states have call predecessors, (78), 60 states have call successors, (78) [2022-11-16 11:07:24,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 446 transitions. [2022-11-16 11:07:24,485 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 446 transitions. Word has length 156 [2022-11-16 11:07:24,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:07:24,485 INFO L495 AbstractCegarLoop]: Abstraction has 381 states and 446 transitions. [2022-11-16 11:07:24,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 6.555555555555555) internal successors, (59), 6 states have internal predecessors, (59), 2 states have call successors, (17), 4 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) [2022-11-16 11:07:24,486 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 446 transitions. [2022-11-16 11:07:24,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-11-16 11:07:24,489 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:07:24,489 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 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] [2022-11-16 11:07:24,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-11-16 11:07:24,490 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:07:24,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:07:24,490 INFO L85 PathProgramCache]: Analyzing trace with hash -1656867622, now seen corresponding path program 1 times [2022-11-16 11:07:24,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:07:24,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437519306] [2022-11-16 11:07:24,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:07:24,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:07:24,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:26,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-16 11:07:26,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:26,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-16 11:07:26,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:26,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-16 11:07:26,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:26,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:07:26,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:26,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-16 11:07:26,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:26,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-16 11:07:26,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:26,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-16 11:07:26,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:26,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-16 11:07:26,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:26,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-16 11:07:26,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:26,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:07:26,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:26,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-16 11:07:26,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:26,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-16 11:07:26,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:26,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-16 11:07:26,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:26,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-11-16 11:07:26,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:26,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-11-16 11:07:26,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:26,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-11-16 11:07:26,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:26,753 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 22 proven. 30 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2022-11-16 11:07:26,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:07:26,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437519306] [2022-11-16 11:07:26,754 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437519306] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:07:26,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1254587468] [2022-11-16 11:07:26,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:07:26,754 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:07:26,754 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a357e79c-3ed0-4232-b8ad-4e429590df33/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:07:26,756 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a357e79c-3ed0-4232-b8ad-4e429590df33/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:07:26,757 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a357e79c-3ed0-4232-b8ad-4e429590df33/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-11-16 11:07:27,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:27,452 INFO L263 TraceCheckSpWp]: Trace formula consists of 2755 conjuncts, 58 conjunts are in the unsatisfiable core [2022-11-16 11:07:27,456 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:07:28,067 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 156 proven. 32 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2022-11-16 11:07:28,067 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:07:28,835 INFO L321 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2022-11-16 11:07:28,835 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 19 [2022-11-16 11:07:28,875 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 28 proven. 74 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2022-11-16 11:07:28,875 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1254587468] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:07:28,875 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:07:28,876 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 11, 12] total 31 [2022-11-16 11:07:28,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009675671] [2022-11-16 11:07:28,876 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:07:28,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-11-16 11:07:28,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:07:28,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-11-16 11:07:28,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=847, Unknown=0, NotChecked=0, Total=930 [2022-11-16 11:07:28,879 INFO L87 Difference]: Start difference. First operand 381 states and 446 transitions. Second operand has 31 states, 28 states have (on average 4.857142857142857) internal successors, (136), 26 states have internal predecessors, (136), 13 states have call successors, (35), 7 states have call predecessors, (35), 9 states have return successors, (33), 11 states have call predecessors, (33), 13 states have call successors, (33) [2022-11-16 11:07:33,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:07:33,013 INFO L93 Difference]: Finished difference Result 508 states and 608 transitions. [2022-11-16 11:07:33,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-16 11:07:33,013 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 28 states have (on average 4.857142857142857) internal successors, (136), 26 states have internal predecessors, (136), 13 states have call successors, (35), 7 states have call predecessors, (35), 9 states have return successors, (33), 11 states have call predecessors, (33), 13 states have call successors, (33) Word has length 160 [2022-11-16 11:07:33,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:07:33,016 INFO L225 Difference]: With dead ends: 508 [2022-11-16 11:07:33,017 INFO L226 Difference]: Without dead ends: 377 [2022-11-16 11:07:33,018 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 388 GetRequests, 336 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 455 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=345, Invalid=2411, Unknown=0, NotChecked=0, Total=2756 [2022-11-16 11:07:33,019 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 506 mSDsluCounter, 514 mSDsCounter, 0 mSdLazyCounter, 2471 mSolverCounterSat, 201 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 518 SdHoareTripleChecker+Valid, 571 SdHoareTripleChecker+Invalid, 2857 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 201 IncrementalHoareTripleChecker+Valid, 2471 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 185 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-11-16 11:07:33,020 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [518 Valid, 571 Invalid, 2857 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [201 Valid, 2471 Invalid, 0 Unknown, 185 Unchecked, 2.8s Time] [2022-11-16 11:07:33,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2022-11-16 11:07:33,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 351. [2022-11-16 11:07:33,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 351 states, 263 states have (on average 1.0722433460076046) internal successors, (282), 264 states have internal predecessors, (282), 55 states have call successors, (55), 34 states have call predecessors, (55), 32 states have return successors, (68), 52 states have call predecessors, (68), 54 states have call successors, (68) [2022-11-16 11:07:33,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 405 transitions. [2022-11-16 11:07:33,079 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 405 transitions. Word has length 160 [2022-11-16 11:07:33,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:07:33,080 INFO L495 AbstractCegarLoop]: Abstraction has 351 states and 405 transitions. [2022-11-16 11:07:33,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 28 states have (on average 4.857142857142857) internal successors, (136), 26 states have internal predecessors, (136), 13 states have call successors, (35), 7 states have call predecessors, (35), 9 states have return successors, (33), 11 states have call predecessors, (33), 13 states have call successors, (33) [2022-11-16 11:07:33,080 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 405 transitions. [2022-11-16 11:07:33,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-11-16 11:07:33,083 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:07:33,083 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 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] [2022-11-16 11:07:33,101 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a357e79c-3ed0-4232-b8ad-4e429590df33/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-11-16 11:07:33,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a357e79c-3ed0-4232-b8ad-4e429590df33/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:07:33,295 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:07:33,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:07:33,296 INFO L85 PathProgramCache]: Analyzing trace with hash 2014125688, now seen corresponding path program 2 times [2022-11-16 11:07:33,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:07:33,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599983694] [2022-11-16 11:07:33,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:07:33,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:07:33,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:34,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-16 11:07:34,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:34,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-16 11:07:34,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:34,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-16 11:07:34,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:34,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:07:34,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:34,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-16 11:07:34,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:34,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-16 11:07:34,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:34,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-16 11:07:34,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:34,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-16 11:07:34,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:34,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-16 11:07:34,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:35,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:07:35,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:35,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-16 11:07:35,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:35,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-16 11:07:35,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:35,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-16 11:07:35,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:35,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-11-16 11:07:35,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:35,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-11-16 11:07:35,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:35,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-11-16 11:07:35,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:35,323 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 29 proven. 15 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2022-11-16 11:07:35,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:07:35,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599983694] [2022-11-16 11:07:35,326 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599983694] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:07:35,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [995573064] [2022-11-16 11:07:35,326 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:07:35,326 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:07:35,327 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a357e79c-3ed0-4232-b8ad-4e429590df33/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:07:35,328 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a357e79c-3ed0-4232-b8ad-4e429590df33/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:07:35,337 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a357e79c-3ed0-4232-b8ad-4e429590df33/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-11-16 11:07:36,504 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 11:07:36,504 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:07:36,518 INFO L263 TraceCheckSpWp]: Trace formula consists of 2773 conjuncts, 45 conjunts are in the unsatisfiable core [2022-11-16 11:07:36,524 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:07:36,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:07:36,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:07:36,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:07:36,677 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 35 [2022-11-16 11:07:36,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:07:36,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:07:36,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:07:36,690 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 35 [2022-11-16 11:07:37,306 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 206 trivial. 0 not checked. [2022-11-16 11:07:37,306 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:07:37,306 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [995573064] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:07:37,307 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:07:37,307 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [16] total 24 [2022-11-16 11:07:37,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507272078] [2022-11-16 11:07:37,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:07:37,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-16 11:07:37,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:07:37,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-16 11:07:37,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=489, Unknown=0, NotChecked=0, Total=552 [2022-11-16 11:07:37,308 INFO L87 Difference]: Start difference. First operand 351 states and 405 transitions. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 10 states have internal predecessors, (69), 6 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (16), 5 states have call predecessors, (16), 5 states have call successors, (16) [2022-11-16 11:07:37,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:07:37,629 INFO L93 Difference]: Finished difference Result 392 states and 451 transitions. [2022-11-16 11:07:37,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-16 11:07:37,629 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 10 states have internal predecessors, (69), 6 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (16), 5 states have call predecessors, (16), 5 states have call successors, (16) Word has length 172 [2022-11-16 11:07:37,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:07:37,631 INFO L225 Difference]: With dead ends: 392 [2022-11-16 11:07:37,631 INFO L226 Difference]: Without dead ends: 368 [2022-11-16 11:07:37,631 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=87, Invalid=669, Unknown=0, NotChecked=0, Total=756 [2022-11-16 11:07:37,632 INFO L413 NwaCegarLoop]: 149 mSDtfsCounter, 47 mSDsluCounter, 855 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 1004 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 154 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:07:37,632 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 1004 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 55 Invalid, 0 Unknown, 154 Unchecked, 0.1s Time] [2022-11-16 11:07:37,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states. [2022-11-16 11:07:37,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 362. [2022-11-16 11:07:37,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 362 states, 273 states have (on average 1.0769230769230769) internal successors, (294), 274 states have internal predecessors, (294), 55 states have call successors, (55), 35 states have call predecessors, (55), 33 states have return successors, (68), 52 states have call predecessors, (68), 54 states have call successors, (68) [2022-11-16 11:07:37,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 417 transitions. [2022-11-16 11:07:37,686 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 417 transitions. Word has length 172 [2022-11-16 11:07:37,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:07:37,686 INFO L495 AbstractCegarLoop]: Abstraction has 362 states and 417 transitions. [2022-11-16 11:07:37,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 10 states have internal predecessors, (69), 6 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (16), 5 states have call predecessors, (16), 5 states have call successors, (16) [2022-11-16 11:07:37,687 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 417 transitions. [2022-11-16 11:07:37,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-11-16 11:07:37,689 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:07:37,690 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 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] [2022-11-16 11:07:37,707 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a357e79c-3ed0-4232-b8ad-4e429590df33/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-11-16 11:07:37,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a357e79c-3ed0-4232-b8ad-4e429590df33/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:07:37,902 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:07:37,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:07:37,903 INFO L85 PathProgramCache]: Analyzing trace with hash 734262010, now seen corresponding path program 3 times [2022-11-16 11:07:37,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:07:37,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716075159] [2022-11-16 11:07:37,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:07:37,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:07:37,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:38,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-16 11:07:38,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:38,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-16 11:07:38,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:38,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-16 11:07:38,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:38,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:07:38,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:38,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-16 11:07:38,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:38,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-16 11:07:38,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:38,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-16 11:07:38,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:38,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-16 11:07:38,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:38,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-16 11:07:38,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:38,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:07:38,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:38,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-16 11:07:38,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:38,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-16 11:07:38,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:38,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-16 11:07:38,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:38,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-11-16 11:07:38,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:38,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-11-16 11:07:38,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:38,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-11-16 11:07:38,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:38,967 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 211 trivial. 0 not checked. [2022-11-16 11:07:38,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:07:38,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716075159] [2022-11-16 11:07:38,967 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716075159] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:07:38,967 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:07:38,967 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-16 11:07:38,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067944337] [2022-11-16 11:07:38,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:07:38,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-16 11:07:38,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:07:38,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-16 11:07:38,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-16 11:07:38,969 INFO L87 Difference]: Start difference. First operand 362 states and 417 transitions. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 9 states have internal predecessors, (69), 4 states have call successors, (17), 4 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-16 11:07:40,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:07:40,182 INFO L93 Difference]: Finished difference Result 391 states and 450 transitions. [2022-11-16 11:07:40,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 11:07:40,188 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 9 states have internal predecessors, (69), 4 states have call successors, (17), 4 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 172 [2022-11-16 11:07:40,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:07:40,191 INFO L225 Difference]: With dead ends: 391 [2022-11-16 11:07:40,191 INFO L226 Difference]: Without dead ends: 375 [2022-11-16 11:07:40,193 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2022-11-16 11:07:40,194 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 181 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 903 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 980 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 903 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:07:40,194 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [184 Valid, 233 Invalid, 980 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 903 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-16 11:07:40,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2022-11-16 11:07:40,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 366. [2022-11-16 11:07:40,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 366 states, 277 states have (on average 1.075812274368231) internal successors, (298), 278 states have internal predecessors, (298), 55 states have call successors, (55), 35 states have call predecessors, (55), 33 states have return successors, (68), 52 states have call predecessors, (68), 54 states have call successors, (68) [2022-11-16 11:07:40,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366 states to 366 states and 421 transitions. [2022-11-16 11:07:40,253 INFO L78 Accepts]: Start accepts. Automaton has 366 states and 421 transitions. Word has length 172 [2022-11-16 11:07:40,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:07:40,254 INFO L495 AbstractCegarLoop]: Abstraction has 366 states and 421 transitions. [2022-11-16 11:07:40,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 9 states have internal predecessors, (69), 4 states have call successors, (17), 4 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-16 11:07:40,254 INFO L276 IsEmpty]: Start isEmpty. Operand 366 states and 421 transitions. [2022-11-16 11:07:40,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-11-16 11:07:40,257 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:07:40,257 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 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] [2022-11-16 11:07:40,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-11-16 11:07:40,258 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:07:40,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:07:40,258 INFO L85 PathProgramCache]: Analyzing trace with hash -1112251330, now seen corresponding path program 1 times [2022-11-16 11:07:40,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:07:40,259 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727448101] [2022-11-16 11:07:40,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:07:40,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:07:40,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:41,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-16 11:07:41,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:41,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-16 11:07:41,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:41,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-16 11:07:41,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:41,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:07:41,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:41,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-16 11:07:41,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:41,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-16 11:07:41,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:41,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-16 11:07:41,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:41,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-16 11:07:41,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:41,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-16 11:07:41,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:41,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:07:41,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:41,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-16 11:07:41,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:41,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-16 11:07:41,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:41,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-16 11:07:41,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:41,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-11-16 11:07:41,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:41,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-11-16 11:07:41,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:41,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-11-16 11:07:41,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:41,513 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 211 trivial. 0 not checked. [2022-11-16 11:07:41,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:07:41,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727448101] [2022-11-16 11:07:41,513 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727448101] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:07:41,513 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:07:41,514 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 11:07:41,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039503619] [2022-11-16 11:07:41,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:07:41,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 11:07:41,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:07:41,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 11:07:41,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-16 11:07:41,515 INFO L87 Difference]: Start difference. First operand 366 states and 421 transitions. Second operand has 10 states, 10 states have (on average 6.9) internal successors, (69), 8 states have internal predecessors, (69), 4 states have call successors, (17), 4 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-16 11:07:42,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:07:42,514 INFO L93 Difference]: Finished difference Result 389 states and 447 transitions. [2022-11-16 11:07:42,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 11:07:42,515 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.9) internal successors, (69), 8 states have internal predecessors, (69), 4 states have call successors, (17), 4 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 172 [2022-11-16 11:07:42,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:07:42,518 INFO L225 Difference]: With dead ends: 389 [2022-11-16 11:07:42,518 INFO L226 Difference]: Without dead ends: 373 [2022-11-16 11:07:42,519 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2022-11-16 11:07:42,519 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 173 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 731 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 807 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 731 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-16 11:07:42,520 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [176 Valid, 208 Invalid, 807 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 731 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-16 11:07:42,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2022-11-16 11:07:42,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 358. [2022-11-16 11:07:42,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 358 states, 270 states have (on average 1.0777777777777777) internal successors, (291), 270 states have internal predecessors, (291), 55 states have call successors, (55), 35 states have call predecessors, (55), 32 states have return successors, (66), 52 states have call predecessors, (66), 54 states have call successors, (66) [2022-11-16 11:07:42,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 412 transitions. [2022-11-16 11:07:42,577 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 412 transitions. Word has length 172 [2022-11-16 11:07:42,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:07:42,578 INFO L495 AbstractCegarLoop]: Abstraction has 358 states and 412 transitions. [2022-11-16 11:07:42,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.9) internal successors, (69), 8 states have internal predecessors, (69), 4 states have call successors, (17), 4 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-16 11:07:42,579 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 412 transitions. [2022-11-16 11:07:42,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-11-16 11:07:42,581 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:07:42,582 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-11-16 11:07:42,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-11-16 11:07:42,582 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:07:42,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:07:42,583 INFO L85 PathProgramCache]: Analyzing trace with hash -141201393, now seen corresponding path program 1 times [2022-11-16 11:07:42,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:07:42,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266141369] [2022-11-16 11:07:42,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:07:42,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:07:42,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:44,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-16 11:07:44,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:44,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-16 11:07:44,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:44,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-16 11:07:44,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:44,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:07:44,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:44,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-16 11:07:44,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:44,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-16 11:07:44,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:44,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-16 11:07:44,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:44,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-16 11:07:44,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:44,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-16 11:07:44,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:44,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:07:44,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:44,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-16 11:07:44,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:44,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-16 11:07:44,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:44,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-16 11:07:44,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:44,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-11-16 11:07:44,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:44,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-11-16 11:07:44,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:44,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-11-16 11:07:44,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:44,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-11-16 11:07:44,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:44,577 INFO L134 CoverageAnalysis]: Checked inductivity of 269 backedges. 31 proven. 12 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2022-11-16 11:07:44,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:07:44,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266141369] [2022-11-16 11:07:44,578 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266141369] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:07:44,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1896065267] [2022-11-16 11:07:44,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:07:44,578 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:07:44,579 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a357e79c-3ed0-4232-b8ad-4e429590df33/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:07:44,580 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a357e79c-3ed0-4232-b8ad-4e429590df33/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:07:44,593 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a357e79c-3ed0-4232-b8ad-4e429590df33/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-11-16 11:07:45,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:45,318 INFO L263 TraceCheckSpWp]: Trace formula consists of 2780 conjuncts, 47 conjunts are in the unsatisfiable core [2022-11-16 11:07:45,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:07:45,385 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 11 treesize of output 7 [2022-11-16 11:07:45,943 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 11:07:45,946 INFO L321 Elim1Store]: treesize reduction 2, result has 33.3 percent of original size [2022-11-16 11:07:45,947 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 1 [2022-11-16 11:07:45,951 INFO L134 CoverageAnalysis]: Checked inductivity of 269 backedges. 130 proven. 76 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2022-11-16 11:07:45,951 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:07:46,302 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 [2022-11-16 11:07:46,430 INFO L134 CoverageAnalysis]: Checked inductivity of 269 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 265 trivial. 0 not checked. [2022-11-16 11:07:46,430 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1896065267] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-16 11:07:46,431 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:07:46,431 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [16, 13] total 28 [2022-11-16 11:07:46,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357433820] [2022-11-16 11:07:46,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:07:46,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-16 11:07:46,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:07:46,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-16 11:07:46,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=674, Unknown=0, NotChecked=0, Total=756 [2022-11-16 11:07:46,433 INFO L87 Difference]: Start difference. First operand 358 states and 412 transitions. Second operand has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 9 states have internal predecessors, (57), 7 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (17), 8 states have call predecessors, (17), 7 states have call successors, (17) [2022-11-16 11:07:47,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:07:47,562 INFO L93 Difference]: Finished difference Result 450 states and 521 transitions. [2022-11-16 11:07:47,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 11:07:47,562 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 9 states have internal predecessors, (57), 7 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (17), 8 states have call predecessors, (17), 7 states have call successors, (17) Word has length 175 [2022-11-16 11:07:47,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:07:47,565 INFO L225 Difference]: With dead ends: 450 [2022-11-16 11:07:47,565 INFO L226 Difference]: Without dead ends: 340 [2022-11-16 11:07:47,566 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 400 GetRequests, 361 SyntacticMatches, 8 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 257 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=109, Invalid=947, Unknown=0, NotChecked=0, Total=1056 [2022-11-16 11:07:47,567 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 84 mSDsluCounter, 352 mSDsCounter, 0 mSdLazyCounter, 868 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 427 SdHoareTripleChecker+Invalid, 913 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 868 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-16 11:07:47,568 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 427 Invalid, 913 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 868 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-16 11:07:47,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2022-11-16 11:07:47,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 329. [2022-11-16 11:07:47,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 329 states, 254 states have (on average 1.0708661417322836) internal successors, (272), 253 states have internal predecessors, (272), 46 states have call successors, (46), 34 states have call predecessors, (46), 28 states have return successors, (53), 41 states have call predecessors, (53), 45 states have call successors, (53) [2022-11-16 11:07:47,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 371 transitions. [2022-11-16 11:07:47,642 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 371 transitions. Word has length 175 [2022-11-16 11:07:47,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:07:47,643 INFO L495 AbstractCegarLoop]: Abstraction has 329 states and 371 transitions. [2022-11-16 11:07:47,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 9 states have internal predecessors, (57), 7 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (17), 8 states have call predecessors, (17), 7 states have call successors, (17) [2022-11-16 11:07:47,643 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 371 transitions. [2022-11-16 11:07:47,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2022-11-16 11:07:47,645 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:07:47,646 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-11-16 11:07:47,658 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a357e79c-3ed0-4232-b8ad-4e429590df33/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-11-16 11:07:47,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a357e79c-3ed0-4232-b8ad-4e429590df33/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2022-11-16 11:07:47,858 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:07:47,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:07:47,858 INFO L85 PathProgramCache]: Analyzing trace with hash -1073783546, now seen corresponding path program 1 times [2022-11-16 11:07:47,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:07:47,858 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906211128] [2022-11-16 11:07:47,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:07:47,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:07:48,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:51,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-16 11:07:51,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:51,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-16 11:07:51,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:51,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-16 11:07:51,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:51,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:07:51,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:51,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-16 11:07:51,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:51,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-16 11:07:51,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:51,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-16 11:07:51,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:51,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-16 11:07:51,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:51,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-16 11:07:51,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:52,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:07:52,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:52,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-16 11:07:52,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:52,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:07:52,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:52,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:07:52,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:53,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:07:53,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:53,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-16 11:07:53,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:53,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-16 11:07:53,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:53,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-11-16 11:07:53,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:53,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-11-16 11:07:53,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:53,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-11-16 11:07:53,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:53,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2022-11-16 11:07:53,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:53,376 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 44 proven. 11 refuted. 0 times theorem prover too weak. 239 trivial. 0 not checked. [2022-11-16 11:07:53,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:07:53,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906211128] [2022-11-16 11:07:53,377 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906211128] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:07:53,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [976477889] [2022-11-16 11:07:53,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:07:53,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:07:53,377 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a357e79c-3ed0-4232-b8ad-4e429590df33/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:07:53,378 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a357e79c-3ed0-4232-b8ad-4e429590df33/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:07:53,381 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a357e79c-3ed0-4232-b8ad-4e429590df33/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-11-16 11:07:54,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:54,124 INFO L263 TraceCheckSpWp]: Trace formula consists of 2899 conjuncts, 47 conjunts are in the unsatisfiable core [2022-11-16 11:07:54,128 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:07:54,212 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 11:07:55,606 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 168 proven. 9 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2022-11-16 11:07:55,607 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:07:56,684 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 [2022-11-16 11:07:56,694 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:07:56,694 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 36 treesize of output 36 [2022-11-16 11:07:56,839 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 82 proven. 30 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2022-11-16 11:07:56,840 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [976477889] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:07:56,840 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:07:56,840 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 14, 13] total 47 [2022-11-16 11:07:56,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677464482] [2022-11-16 11:07:56,841 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:07:56,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-11-16 11:07:56,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:07:56,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-11-16 11:07:56,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=2011, Unknown=0, NotChecked=0, Total=2162 [2022-11-16 11:07:56,843 INFO L87 Difference]: Start difference. First operand 329 states and 371 transitions. Second operand has 47 states, 40 states have (on average 4.325) internal successors, (173), 42 states have internal predecessors, (173), 19 states have call successors, (44), 5 states have call predecessors, (44), 12 states have return successors, (43), 17 states have call predecessors, (43), 19 states have call successors, (43) [2022-11-16 11:08:07,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:08:07,531 INFO L93 Difference]: Finished difference Result 461 states and 533 transitions. [2022-11-16 11:08:07,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-11-16 11:08:07,532 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 40 states have (on average 4.325) internal successors, (173), 42 states have internal predecessors, (173), 19 states have call successors, (44), 5 states have call predecessors, (44), 12 states have return successors, (43), 17 states have call predecessors, (43), 19 states have call successors, (43) Word has length 196 [2022-11-16 11:08:07,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:08:07,535 INFO L225 Difference]: With dead ends: 461 [2022-11-16 11:08:07,535 INFO L226 Difference]: Without dead ends: 356 [2022-11-16 11:08:07,536 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 493 GetRequests, 408 SyntacticMatches, 4 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1445 ImplicationChecksByTransitivity, 9.5s TimeCoverageRelationStatistics Valid=652, Invalid=6152, Unknown=2, NotChecked=0, Total=6806 [2022-11-16 11:08:07,536 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 480 mSDsluCounter, 994 mSDsCounter, 0 mSdLazyCounter, 3388 mSolverCounterSat, 200 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 485 SdHoareTripleChecker+Valid, 1049 SdHoareTripleChecker+Invalid, 3877 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 200 IncrementalHoareTripleChecker+Valid, 3388 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 289 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-11-16 11:08:07,537 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [485 Valid, 1049 Invalid, 3877 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [200 Valid, 3388 Invalid, 0 Unknown, 289 Unchecked, 3.6s Time] [2022-11-16 11:08:07,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2022-11-16 11:08:07,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 320. [2022-11-16 11:08:07,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 245 states have (on average 1.0489795918367346) internal successors, (257), 244 states have internal predecessors, (257), 46 states have call successors, (46), 34 states have call predecessors, (46), 28 states have return successors, (53), 41 states have call predecessors, (53), 45 states have call successors, (53) [2022-11-16 11:08:07,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 356 transitions. [2022-11-16 11:08:07,596 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 356 transitions. Word has length 196 [2022-11-16 11:08:07,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:08:07,596 INFO L495 AbstractCegarLoop]: Abstraction has 320 states and 356 transitions. [2022-11-16 11:08:07,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 40 states have (on average 4.325) internal successors, (173), 42 states have internal predecessors, (173), 19 states have call successors, (44), 5 states have call predecessors, (44), 12 states have return successors, (43), 17 states have call predecessors, (43), 19 states have call successors, (43) [2022-11-16 11:08:07,597 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 356 transitions. [2022-11-16 11:08:07,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2022-11-16 11:08:07,599 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:08:07,599 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 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] [2022-11-16 11:08:07,614 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a357e79c-3ed0-4232-b8ad-4e429590df33/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-11-16 11:08:07,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a357e79c-3ed0-4232-b8ad-4e429590df33/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:08:07,815 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:08:07,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:08:07,815 INFO L85 PathProgramCache]: Analyzing trace with hash 1405321594, now seen corresponding path program 1 times [2022-11-16 11:08:07,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:08:07,815 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114487298] [2022-11-16 11:08:07,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:08:07,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:08:07,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:09,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-16 11:08:09,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:09,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-16 11:08:09,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:09,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-16 11:08:09,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:09,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:08:09,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:09,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-16 11:08:09,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:09,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-16 11:08:09,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:09,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-16 11:08:09,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:09,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-16 11:08:09,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:09,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-16 11:08:09,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:09,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:08:09,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:09,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-16 11:08:09,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:09,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:08:09,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:09,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:08:09,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:09,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:08:09,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:09,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-16 11:08:09,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:09,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-16 11:08:09,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:09,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-11-16 11:08:09,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:09,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-11-16 11:08:09,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:09,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-11-16 11:08:09,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:09,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-11-16 11:08:09,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:09,831 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 60 proven. 10 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2022-11-16 11:08:09,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:08:09,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114487298] [2022-11-16 11:08:09,832 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114487298] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:08:09,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1079652226] [2022-11-16 11:08:09,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:08:09,832 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:08:09,833 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a357e79c-3ed0-4232-b8ad-4e429590df33/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:08:09,834 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a357e79c-3ed0-4232-b8ad-4e429590df33/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:08:09,848 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a357e79c-3ed0-4232-b8ad-4e429590df33/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-11-16 11:08:10,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:10,639 INFO L263 TraceCheckSpWp]: Trace formula consists of 2903 conjuncts, 30 conjunts are in the unsatisfiable core [2022-11-16 11:08:10,642 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:08:10,948 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 97 proven. 32 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2022-11-16 11:08:10,948 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:08:11,555 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 42 proven. 4 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2022-11-16 11:08:11,555 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1079652226] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:08:11,555 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:08:11,555 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 15, 11] total 31 [2022-11-16 11:08:11,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839633871] [2022-11-16 11:08:11,556 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:08:11,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-11-16 11:08:11,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:08:11,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-11-16 11:08:11,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=862, Unknown=0, NotChecked=0, Total=930 [2022-11-16 11:08:11,557 INFO L87 Difference]: Start difference. First operand 320 states and 356 transitions. Second operand has 31 states, 26 states have (on average 4.884615384615385) internal successors, (127), 24 states have internal predecessors, (127), 9 states have call successors, (36), 5 states have call predecessors, (36), 8 states have return successors, (34), 8 states have call predecessors, (34), 9 states have call successors, (34) [2022-11-16 11:08:15,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:08:15,028 INFO L93 Difference]: Finished difference Result 400 states and 446 transitions. [2022-11-16 11:08:15,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-16 11:08:15,029 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 26 states have (on average 4.884615384615385) internal successors, (127), 24 states have internal predecessors, (127), 9 states have call successors, (36), 5 states have call predecessors, (36), 8 states have return successors, (34), 8 states have call predecessors, (34), 9 states have call successors, (34) Word has length 200 [2022-11-16 11:08:15,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:08:15,030 INFO L225 Difference]: With dead ends: 400 [2022-11-16 11:08:15,030 INFO L226 Difference]: Without dead ends: 317 [2022-11-16 11:08:15,031 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 476 GetRequests, 423 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 359 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=316, Invalid=2654, Unknown=0, NotChecked=0, Total=2970 [2022-11-16 11:08:15,031 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 228 mSDsluCounter, 701 mSDsCounter, 0 mSdLazyCounter, 2704 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 741 SdHoareTripleChecker+Invalid, 2797 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 2704 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-16 11:08:15,031 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [235 Valid, 741 Invalid, 2797 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 2704 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-11-16 11:08:15,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2022-11-16 11:08:15,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 305. [2022-11-16 11:08:15,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 305 states, 231 states have (on average 1.0476190476190477) internal successors, (242), 230 states have internal predecessors, (242), 46 states have call successors, (46), 33 states have call predecessors, (46), 27 states have return successors, (52), 41 states have call predecessors, (52), 45 states have call successors, (52) [2022-11-16 11:08:15,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 340 transitions. [2022-11-16 11:08:15,086 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 340 transitions. Word has length 200 [2022-11-16 11:08:15,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:08:15,087 INFO L495 AbstractCegarLoop]: Abstraction has 305 states and 340 transitions. [2022-11-16 11:08:15,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 26 states have (on average 4.884615384615385) internal successors, (127), 24 states have internal predecessors, (127), 9 states have call successors, (36), 5 states have call predecessors, (36), 8 states have return successors, (34), 8 states have call predecessors, (34), 9 states have call successors, (34) [2022-11-16 11:08:15,087 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 340 transitions. [2022-11-16 11:08:15,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2022-11-16 11:08:15,095 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:08:15,095 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:08:15,113 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a357e79c-3ed0-4232-b8ad-4e429590df33/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2022-11-16 11:08:15,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a357e79c-3ed0-4232-b8ad-4e429590df33/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2022-11-16 11:08:15,308 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:08:15,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:08:15,308 INFO L85 PathProgramCache]: Analyzing trace with hash 877468342, now seen corresponding path program 1 times [2022-11-16 11:08:15,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:08:15,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454518120] [2022-11-16 11:08:15,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:08:15,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:08:15,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:17,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-16 11:08:17,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:17,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-16 11:08:17,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:17,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-16 11:08:17,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:17,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-16 11:08:17,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:17,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:08:17,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:17,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-16 11:08:17,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:17,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-16 11:08:17,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:17,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-16 11:08:17,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:17,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-16 11:08:17,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:17,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-11-16 11:08:17,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:17,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:08:17,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:17,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-16 11:08:17,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:17,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:08:17,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:17,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:08:17,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:17,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:08:17,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:17,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-16 11:08:17,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:17,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-16 11:08:17,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:17,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-11-16 11:08:17,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:17,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-11-16 11:08:17,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:17,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-11-16 11:08:17,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:17,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-11-16 11:08:17,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:17,464 INFO L134 CoverageAnalysis]: Checked inductivity of 318 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 314 trivial. 0 not checked. [2022-11-16 11:08:17,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:08:17,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454518120] [2022-11-16 11:08:17,464 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [454518120] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:08:17,464 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:08:17,464 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-16 11:08:17,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461687780] [2022-11-16 11:08:17,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:08:17,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-16 11:08:17,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:08:17,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-16 11:08:17,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-11-16 11:08:17,466 INFO L87 Difference]: Start difference. First operand 305 states and 340 transitions. Second operand has 11 states, 10 states have (on average 7.3) internal successors, (73), 8 states have internal predecessors, (73), 6 states have call successors, (22), 4 states have call predecessors, (22), 1 states have return successors, (21), 5 states have call predecessors, (21), 5 states have call successors, (21) [2022-11-16 11:08:18,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:08:18,525 INFO L93 Difference]: Finished difference Result 313 states and 347 transitions. [2022-11-16 11:08:18,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-16 11:08:18,526 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 7.3) internal successors, (73), 8 states have internal predecessors, (73), 6 states have call successors, (22), 4 states have call predecessors, (22), 1 states have return successors, (21), 5 states have call predecessors, (21), 5 states have call successors, (21) Word has length 207 [2022-11-16 11:08:18,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:08:18,527 INFO L225 Difference]: With dead ends: 313 [2022-11-16 11:08:18,527 INFO L226 Difference]: Without dead ends: 311 [2022-11-16 11:08:18,527 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2022-11-16 11:08:18,528 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 142 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 847 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 204 SdHoareTripleChecker+Invalid, 932 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 847 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-16 11:08:18,528 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 204 Invalid, 932 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 847 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-16 11:08:18,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2022-11-16 11:08:18,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 309. [2022-11-16 11:08:18,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 234 states have (on average 1.047008547008547) internal successors, (245), 233 states have internal predecessors, (245), 46 states have call successors, (46), 34 states have call predecessors, (46), 28 states have return successors, (52), 41 states have call predecessors, (52), 45 states have call successors, (52) [2022-11-16 11:08:18,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 343 transitions. [2022-11-16 11:08:18,583 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 343 transitions. Word has length 207 [2022-11-16 11:08:18,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:08:18,584 INFO L495 AbstractCegarLoop]: Abstraction has 309 states and 343 transitions. [2022-11-16 11:08:18,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 7.3) internal successors, (73), 8 states have internal predecessors, (73), 6 states have call successors, (22), 4 states have call predecessors, (22), 1 states have return successors, (21), 5 states have call predecessors, (21), 5 states have call successors, (21) [2022-11-16 11:08:18,584 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 343 transitions. [2022-11-16 11:08:18,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2022-11-16 11:08:18,586 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:08:18,587 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:08:18,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-11-16 11:08:18,587 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:08:18,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:08:18,588 INFO L85 PathProgramCache]: Analyzing trace with hash 518578268, now seen corresponding path program 1 times [2022-11-16 11:08:18,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:08:18,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9944974] [2022-11-16 11:08:18,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:08:18,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:08:18,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:19,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-16 11:08:19,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:19,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-16 11:08:19,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:19,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-16 11:08:19,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:19,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-16 11:08:19,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:19,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:08:19,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:19,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-16 11:08:19,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:19,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-16 11:08:19,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:19,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-16 11:08:19,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:19,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-16 11:08:19,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:19,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-11-16 11:08:19,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:19,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:08:19,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:19,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-16 11:08:19,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:19,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:08:19,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:19,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:08:19,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:19,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:08:19,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:19,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-16 11:08:19,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:19,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-16 11:08:19,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:19,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-11-16 11:08:19,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:19,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-11-16 11:08:19,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:19,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-11-16 11:08:19,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:19,594 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 310 trivial. 0 not checked. [2022-11-16 11:08:19,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:08:19,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9944974] [2022-11-16 11:08:19,595 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [9944974] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:08:19,595 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:08:19,595 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-16 11:08:19,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858069732] [2022-11-16 11:08:19,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:08:19,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 11:08:19,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:08:19,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 11:08:19,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-11-16 11:08:19,597 INFO L87 Difference]: Start difference. First operand 309 states and 343 transitions. Second operand has 12 states, 11 states have (on average 6.7272727272727275) internal successors, (74), 8 states have internal predecessors, (74), 2 states have call successors, (21), 4 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 1 states have call successors, (20) [2022-11-16 11:08:20,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:08:20,733 INFO L93 Difference]: Finished difference Result 319 states and 353 transitions. [2022-11-16 11:08:20,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-16 11:08:20,734 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 6.7272727272727275) internal successors, (74), 8 states have internal predecessors, (74), 2 states have call successors, (21), 4 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 1 states have call successors, (20) Word has length 206 [2022-11-16 11:08:20,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:08:20,737 INFO L225 Difference]: With dead ends: 319 [2022-11-16 11:08:20,737 INFO L226 Difference]: Without dead ends: 317 [2022-11-16 11:08:20,737 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=90, Invalid=330, Unknown=0, NotChecked=0, Total=420 [2022-11-16 11:08:20,738 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 147 mSDsluCounter, 376 mSDsCounter, 0 mSdLazyCounter, 969 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 438 SdHoareTripleChecker+Invalid, 1038 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 969 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-16 11:08:20,738 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 438 Invalid, 1038 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 969 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-16 11:08:20,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2022-11-16 11:08:20,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 309. [2022-11-16 11:08:20,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 234 states have (on average 1.047008547008547) internal successors, (245), 233 states have internal predecessors, (245), 46 states have call successors, (46), 34 states have call predecessors, (46), 28 states have return successors, (52), 41 states have call predecessors, (52), 45 states have call successors, (52) [2022-11-16 11:08:20,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 343 transitions. [2022-11-16 11:08:20,795 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 343 transitions. Word has length 206 [2022-11-16 11:08:20,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:08:20,796 INFO L495 AbstractCegarLoop]: Abstraction has 309 states and 343 transitions. [2022-11-16 11:08:20,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 6.7272727272727275) internal successors, (74), 8 states have internal predecessors, (74), 2 states have call successors, (21), 4 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 1 states have call successors, (20) [2022-11-16 11:08:20,796 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 343 transitions. [2022-11-16 11:08:20,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2022-11-16 11:08:20,798 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:08:20,798 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:08:20,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-11-16 11:08:20,799 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:08:20,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:08:20,800 INFO L85 PathProgramCache]: Analyzing trace with hash 962308287, now seen corresponding path program 1 times [2022-11-16 11:08:20,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:08:20,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070726030] [2022-11-16 11:08:20,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:08:20,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:08:20,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:21,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-16 11:08:21,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:21,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-16 11:08:21,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:21,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-16 11:08:21,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:21,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:08:21,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:21,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-16 11:08:21,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:21,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-16 11:08:21,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:21,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-16 11:08:21,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:21,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-16 11:08:21,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:21,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-16 11:08:21,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:21,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:08:21,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:21,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-16 11:08:21,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:21,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:08:21,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:21,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:08:21,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:21,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:08:21,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:21,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-16 11:08:21,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:21,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-16 11:08:21,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:21,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-11-16 11:08:21,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:22,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2022-11-16 11:08:22,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:22,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-11-16 11:08:22,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:22,182 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 82 proven. 0 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2022-11-16 11:08:22,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:08:22,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070726030] [2022-11-16 11:08:22,183 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070726030] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:08:22,183 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:08:22,183 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 11:08:22,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72378358] [2022-11-16 11:08:22,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:08:22,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 11:08:22,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:08:22,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 11:08:22,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-11-16 11:08:22,184 INFO L87 Difference]: Start difference. First operand 309 states and 343 transitions. Second operand has 10 states, 10 states have (on average 8.0) internal successors, (80), 8 states have internal predecessors, (80), 4 states have call successors, (20), 4 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-11-16 11:08:23,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:08:23,262 INFO L93 Difference]: Finished difference Result 330 states and 365 transitions. [2022-11-16 11:08:23,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 11:08:23,263 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.0) internal successors, (80), 8 states have internal predecessors, (80), 4 states have call successors, (20), 4 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 201 [2022-11-16 11:08:23,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:08:23,265 INFO L225 Difference]: With dead ends: 330 [2022-11-16 11:08:23,265 INFO L226 Difference]: Without dead ends: 310 [2022-11-16 11:08:23,266 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2022-11-16 11:08:23,266 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 165 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 738 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 816 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 738 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-16 11:08:23,266 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 199 Invalid, 816 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 738 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-16 11:08:23,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2022-11-16 11:08:23,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 308. [2022-11-16 11:08:23,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 234 states have (on average 1.047008547008547) internal successors, (245), 233 states have internal predecessors, (245), 45 states have call successors, (45), 34 states have call predecessors, (45), 28 states have return successors, (50), 40 states have call predecessors, (50), 44 states have call successors, (50) [2022-11-16 11:08:23,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 340 transitions. [2022-11-16 11:08:23,323 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 340 transitions. Word has length 201 [2022-11-16 11:08:23,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:08:23,323 INFO L495 AbstractCegarLoop]: Abstraction has 308 states and 340 transitions. [2022-11-16 11:08:23,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.0) internal successors, (80), 8 states have internal predecessors, (80), 4 states have call successors, (20), 4 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-11-16 11:08:23,324 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 340 transitions. [2022-11-16 11:08:23,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2022-11-16 11:08:23,326 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:08:23,327 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 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] [2022-11-16 11:08:23,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-11-16 11:08:23,327 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:08:23,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:08:23,328 INFO L85 PathProgramCache]: Analyzing trace with hash -1465325202, now seen corresponding path program 1 times [2022-11-16 11:08:23,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:08:23,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895214217] [2022-11-16 11:08:23,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:08:23,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:08:24,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:25,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-16 11:08:25,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:25,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-16 11:08:25,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:25,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-16 11:08:25,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:25,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:08:25,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:25,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-16 11:08:25,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:25,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-16 11:08:25,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:25,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-16 11:08:25,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:25,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-16 11:08:25,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:25,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-16 11:08:25,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:25,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:08:25,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:25,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-16 11:08:25,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:25,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:08:25,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:25,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:08:25,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:25,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:08:25,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:25,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-16 11:08:25,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:25,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-16 11:08:25,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:25,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-11-16 11:08:25,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:25,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2022-11-16 11:08:25,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:25,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-11-16 11:08:25,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:25,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-11-16 11:08:25,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:25,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-11-16 11:08:25,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:25,860 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 322 trivial. 0 not checked. [2022-11-16 11:08:25,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:08:25,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895214217] [2022-11-16 11:08:25,861 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895214217] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:08:25,861 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:08:25,861 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-16 11:08:25,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466330384] [2022-11-16 11:08:25,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:08:25,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-16 11:08:25,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:08:25,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-16 11:08:25,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-11-16 11:08:25,863 INFO L87 Difference]: Start difference. First operand 308 states and 340 transitions. Second operand has 11 states, 10 states have (on average 7.1) internal successors, (71), 8 states have internal predecessors, (71), 6 states have call successors, (22), 4 states have call predecessors, (22), 1 states have return successors, (21), 5 states have call predecessors, (21), 5 states have call successors, (21) [2022-11-16 11:08:26,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:08:26,864 INFO L93 Difference]: Finished difference Result 316 states and 347 transitions. [2022-11-16 11:08:26,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-16 11:08:26,871 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 7.1) internal successors, (71), 8 states have internal predecessors, (71), 6 states have call successors, (22), 4 states have call predecessors, (22), 1 states have return successors, (21), 5 states have call predecessors, (21), 5 states have call successors, (21) Word has length 208 [2022-11-16 11:08:26,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:08:26,873 INFO L225 Difference]: With dead ends: 316 [2022-11-16 11:08:26,873 INFO L226 Difference]: Without dead ends: 314 [2022-11-16 11:08:26,874 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2022-11-16 11:08:26,877 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 156 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 664 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 183 SdHoareTripleChecker+Invalid, 756 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 664 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-16 11:08:26,877 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 183 Invalid, 756 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 664 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-16 11:08:26,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2022-11-16 11:08:26,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 312. [2022-11-16 11:08:26,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 312 states, 237 states have (on average 1.0464135021097047) internal successors, (248), 236 states have internal predecessors, (248), 45 states have call successors, (45), 35 states have call predecessors, (45), 29 states have return successors, (50), 40 states have call predecessors, (50), 44 states have call successors, (50) [2022-11-16 11:08:26,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 343 transitions. [2022-11-16 11:08:26,933 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 343 transitions. Word has length 208 [2022-11-16 11:08:26,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:08:26,934 INFO L495 AbstractCegarLoop]: Abstraction has 312 states and 343 transitions. [2022-11-16 11:08:26,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 7.1) internal successors, (71), 8 states have internal predecessors, (71), 6 states have call successors, (22), 4 states have call predecessors, (22), 1 states have return successors, (21), 5 states have call predecessors, (21), 5 states have call successors, (21) [2022-11-16 11:08:26,934 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 343 transitions. [2022-11-16 11:08:26,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2022-11-16 11:08:26,936 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:08:26,937 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:08:26,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-11-16 11:08:26,937 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:08:26,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:08:26,938 INFO L85 PathProgramCache]: Analyzing trace with hash -1202449359, now seen corresponding path program 1 times [2022-11-16 11:08:26,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:08:26,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584715454] [2022-11-16 11:08:26,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:08:26,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:08:27,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:28,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-16 11:08:28,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:28,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-16 11:08:28,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:28,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-16 11:08:28,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:28,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:08:28,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:28,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-16 11:08:28,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:28,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-16 11:08:28,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:28,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-16 11:08:28,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:28,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-16 11:08:28,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:28,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-16 11:08:28,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:28,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:08:28,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:28,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-16 11:08:28,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:28,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:08:28,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:28,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:08:28,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:28,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:08:28,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:28,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-16 11:08:28,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:28,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-16 11:08:28,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:28,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-11-16 11:08:28,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:28,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2022-11-16 11:08:28,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:28,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-11-16 11:08:28,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:28,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-11-16 11:08:28,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:28,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-11-16 11:08:28,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:28,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2022-11-16 11:08:28,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:28,875 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 334 trivial. 0 not checked. [2022-11-16 11:08:28,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:08:28,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584715454] [2022-11-16 11:08:28,875 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584715454] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:08:28,875 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:08:28,875 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-16 11:08:28,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146040076] [2022-11-16 11:08:28,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:08:28,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-16 11:08:28,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:08:28,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-16 11:08:28,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-11-16 11:08:28,877 INFO L87 Difference]: Start difference. First operand 312 states and 343 transitions. Second operand has 11 states, 10 states have (on average 7.1) internal successors, (71), 8 states have internal predecessors, (71), 6 states have call successors, (23), 4 states have call predecessors, (23), 1 states have return successors, (22), 4 states have call predecessors, (22), 5 states have call successors, (22) [2022-11-16 11:08:29,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:08:29,919 INFO L93 Difference]: Finished difference Result 320 states and 350 transitions. [2022-11-16 11:08:29,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 11:08:29,920 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 7.1) internal successors, (71), 8 states have internal predecessors, (71), 6 states have call successors, (23), 4 states have call predecessors, (23), 1 states have return successors, (22), 4 states have call predecessors, (22), 5 states have call successors, (22) Word has length 214 [2022-11-16 11:08:29,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:08:29,922 INFO L225 Difference]: With dead ends: 320 [2022-11-16 11:08:29,922 INFO L226 Difference]: Without dead ends: 316 [2022-11-16 11:08:29,922 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2022-11-16 11:08:29,923 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 143 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 735 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 820 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 735 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-16 11:08:29,923 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 199 Invalid, 820 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 735 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-16 11:08:29,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2022-11-16 11:08:29,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 314. [2022-11-16 11:08:29,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 314 states, 239 states have (on average 1.0418410041841004) internal successors, (249), 237 states have internal predecessors, (249), 45 states have call successors, (45), 36 states have call predecessors, (45), 29 states have return successors, (50), 40 states have call predecessors, (50), 44 states have call successors, (50) [2022-11-16 11:08:29,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 344 transitions. [2022-11-16 11:08:29,979 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 344 transitions. Word has length 214 [2022-11-16 11:08:29,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:08:29,979 INFO L495 AbstractCegarLoop]: Abstraction has 314 states and 344 transitions. [2022-11-16 11:08:29,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 7.1) internal successors, (71), 8 states have internal predecessors, (71), 6 states have call successors, (23), 4 states have call predecessors, (23), 1 states have return successors, (22), 4 states have call predecessors, (22), 5 states have call successors, (22) [2022-11-16 11:08:29,980 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 344 transitions. [2022-11-16 11:08:29,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2022-11-16 11:08:29,982 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:08:29,982 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:08:29,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-11-16 11:08:29,983 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:08:29,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:08:29,983 INFO L85 PathProgramCache]: Analyzing trace with hash -372648026, now seen corresponding path program 1 times [2022-11-16 11:08:29,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:08:29,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244345397] [2022-11-16 11:08:29,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:08:29,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:08:30,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:32,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-16 11:08:32,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:32,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-16 11:08:32,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:32,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-16 11:08:32,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:32,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:08:32,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:32,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-16 11:08:32,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:32,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-16 11:08:32,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:32,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-16 11:08:32,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:32,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-16 11:08:32,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:32,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-16 11:08:32,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:32,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:08:32,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:32,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-16 11:08:32,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:32,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:08:32,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:32,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:08:32,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:32,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:08:32,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:32,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-16 11:08:32,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:32,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-16 11:08:32,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:32,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-11-16 11:08:32,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:33,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2022-11-16 11:08:33,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:33,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-11-16 11:08:33,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:33,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-11-16 11:08:33,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:33,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-11-16 11:08:33,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:33,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2022-11-16 11:08:33,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:33,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-11-16 11:08:33,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:33,050 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 350 trivial. 0 not checked. [2022-11-16 11:08:33,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:08:33,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244345397] [2022-11-16 11:08:33,050 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244345397] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:08:33,051 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:08:33,051 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-16 11:08:33,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614237988] [2022-11-16 11:08:33,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:08:33,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 11:08:33,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:08:33,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 11:08:33,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2022-11-16 11:08:33,052 INFO L87 Difference]: Start difference. First operand 314 states and 344 transitions. Second operand has 12 states, 11 states have (on average 6.636363636363637) internal successors, (73), 9 states have internal predecessors, (73), 7 states have call successors, (24), 4 states have call predecessors, (24), 1 states have return successors, (23), 5 states have call predecessors, (23), 6 states have call successors, (23) [2022-11-16 11:08:34,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:08:34,030 INFO L93 Difference]: Finished difference Result 316 states and 346 transitions. [2022-11-16 11:08:34,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-16 11:08:34,031 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 6.636363636363637) internal successors, (73), 9 states have internal predecessors, (73), 7 states have call successors, (24), 4 states have call predecessors, (24), 1 states have return successors, (23), 5 states have call predecessors, (23), 6 states have call successors, (23) Word has length 220 [2022-11-16 11:08:34,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:08:34,032 INFO L225 Difference]: With dead ends: 316 [2022-11-16 11:08:34,032 INFO L226 Difference]: Without dead ends: 0 [2022-11-16 11:08:34,033 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2022-11-16 11:08:34,033 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 137 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 828 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 914 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 828 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-16 11:08:34,034 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 201 Invalid, 914 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 828 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-16 11:08:34,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-16 11:08:34,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-16 11:08:34,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:08:34,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-16 11:08:34,035 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 220 [2022-11-16 11:08:34,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:08:34,035 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-16 11:08:34,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 6.636363636363637) internal successors, (73), 9 states have internal predecessors, (73), 7 states have call successors, (24), 4 states have call predecessors, (24), 1 states have return successors, (23), 5 states have call predecessors, (23), 6 states have call successors, (23) [2022-11-16 11:08:34,036 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-16 11:08:34,036 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-16 11:08:34,039 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-16 11:08:34,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-11-16 11:08:34,042 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-16 11:08:58,121 WARN L233 SmtUtils]: Spent 17.95s on a formula simplification. DAG size of input: 276 DAG size of output: 1 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2022-11-16 11:09:08,317 WARN L233 SmtUtils]: Spent 10.19s on a formula simplification. DAG size of input: 183 DAG size of output: 1 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2022-11-16 11:09:08,971 INFO L895 garLoopResultBuilder]: At program point bounded_mallocENTRY(lines 6876 6881) the Hoare annotation is: (or (not (< 0 |#StackHeapBarrier|)) (and (= |old(#length)| |#length|) (= |old(#valid)| |#valid|))) [2022-11-16 11:09:08,971 INFO L899 garLoopResultBuilder]: For program point bounded_mallocFINAL(lines 6876 6881) no Hoare annotation was computed. [2022-11-16 11:09:08,971 INFO L899 garLoopResultBuilder]: For program point L6877-1(lines 6877 6879) no Hoare annotation was computed. [2022-11-16 11:09:08,971 INFO L895 garLoopResultBuilder]: At program point L6877(lines 6877 6879) the Hoare annotation is: (or (not (< 0 |#StackHeapBarrier|)) (and (= |old(#length)| |#length|) (= |old(#valid)| |#valid|))) [2022-11-16 11:09:08,971 INFO L899 garLoopResultBuilder]: For program point bounded_mallocEXIT(lines 6876 6881) no Hoare annotation was computed. [2022-11-16 11:09:08,971 INFO L895 garLoopResultBuilder]: At program point my_memsetENTRY(lines 7123 7125) the Hoare annotation is: (or (and (= |old(#memory_real)| |#memory_real|) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|)) (not (< 0 |#StackHeapBarrier|))) [2022-11-16 11:09:08,972 INFO L899 garLoopResultBuilder]: For program point my_memsetFINAL(lines 7123 7125) no Hoare annotation was computed. [2022-11-16 11:09:08,972 INFO L899 garLoopResultBuilder]: For program point my_memsetEXIT(lines 7123 7125) no Hoare annotation was computed. [2022-11-16 11:09:08,972 INFO L899 garLoopResultBuilder]: For program point L7124-1(line 7124) no Hoare annotation was computed. [2022-11-16 11:09:08,972 INFO L895 garLoopResultBuilder]: At program point L7124(line 7124) the Hoare annotation is: (or (not (< 0 |#StackHeapBarrier|)) (and (= |old(#memory_real)| |#memory_real|) (= my_memset_~c |my_memset_#in~c|) (= |#memory_int| |old(#memory_int)|) (= my_memset_~s.offset |my_memset_#in~s.offset|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= my_memset_~n |my_memset_#in~n|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|) (= my_memset_~s.base |my_memset_#in~s.base|))) [2022-11-16 11:09:08,972 INFO L899 garLoopResultBuilder]: For program point memset_implEXIT(lines 7113 7121) no Hoare annotation was computed. [2022-11-16 11:09:08,972 INFO L895 garLoopResultBuilder]: At program point memset_implENTRY(lines 7113 7121) the Hoare annotation is: (or (and (= |old(#memory_real)| |#memory_real|) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|)) (not (< 0 |#StackHeapBarrier|))) [2022-11-16 11:09:08,972 INFO L895 garLoopResultBuilder]: At program point L7114(line 7114) the Hoare annotation is: (or (and (= |old(#memory_real)| |#memory_real|) (= |memset_impl_#in~s.base| memset_impl_~s.base) (= memset_impl_~s.offset |memset_impl_#in~s.offset|) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|) (= |memset_impl_#in~n| memset_impl_~n)) (not (< 0 |#StackHeapBarrier|))) [2022-11-16 11:09:08,972 INFO L895 garLoopResultBuilder]: At program point L7117-3(lines 7117 7118) the Hoare annotation is: (or (and (or (< 0 (mod memset_impl_~n 18446744073709551616)) (<= (mod |memset_impl_#in~n| 18446744073709551616) 0)) (= memset_impl_~sp~0.base |memset_impl_#in~s.base|) (= |#memory_int| (store |old(#memory_int)| memset_impl_~sp~0.base (select |#memory_int| memset_impl_~sp~0.base)))) (not (< 0 |#StackHeapBarrier|))) [2022-11-16 11:09:08,973 INFO L899 garLoopResultBuilder]: For program point L7117-2(lines 7117 7118) no Hoare annotation was computed. [2022-11-16 11:09:08,973 INFO L899 garLoopResultBuilder]: For program point L7115(lines 7115 7119) no Hoare annotation was computed. [2022-11-16 11:09:08,973 INFO L899 garLoopResultBuilder]: For program point L7114-1(lines 7113 7121) no Hoare annotation was computed. [2022-11-16 11:09:08,973 INFO L899 garLoopResultBuilder]: For program point memset_implFINAL(lines 7113 7121) no Hoare annotation was computed. [2022-11-16 11:09:08,973 INFO L902 garLoopResultBuilder]: At program point aws_byte_buf_is_validENTRY(lines 7179 7185) the Hoare annotation is: true [2022-11-16 11:09:08,974 INFO L899 garLoopResultBuilder]: For program point L7181-3(line 7181) no Hoare annotation was computed. [2022-11-16 11:09:08,974 INFO L899 garLoopResultBuilder]: For program point L7181-1(line 7181) no Hoare annotation was computed. [2022-11-16 11:09:08,974 INFO L899 garLoopResultBuilder]: For program point L7181(lines 7181 7184) no Hoare annotation was computed. [2022-11-16 11:09:08,974 INFO L899 garLoopResultBuilder]: For program point L7181-7(lines 7181 7184) no Hoare annotation was computed. [2022-11-16 11:09:08,974 INFO L899 garLoopResultBuilder]: For program point L7181-6(lines 7181 7182) no Hoare annotation was computed. [2022-11-16 11:09:08,974 INFO L899 garLoopResultBuilder]: For program point L7181-4(lines 7181 7182) no Hoare annotation was computed. [2022-11-16 11:09:08,974 INFO L899 garLoopResultBuilder]: For program point L7181-11(lines 7181 7184) no Hoare annotation was computed. [2022-11-16 11:09:08,975 INFO L899 garLoopResultBuilder]: For program point L7181-9(lines 7181 7184) no Hoare annotation was computed. [2022-11-16 11:09:08,975 INFO L899 garLoopResultBuilder]: For program point aws_byte_buf_is_validFINAL(lines 7179 7185) no Hoare annotation was computed. [2022-11-16 11:09:08,975 INFO L899 garLoopResultBuilder]: For program point aws_byte_buf_is_validEXIT(lines 7179 7185) no Hoare annotation was computed. [2022-11-16 11:09:08,975 INFO L899 garLoopResultBuilder]: For program point L7184-2(line 7184) no Hoare annotation was computed. [2022-11-16 11:09:08,975 INFO L899 garLoopResultBuilder]: For program point L7184(line 7184) no Hoare annotation was computed. [2022-11-16 11:09:08,975 INFO L899 garLoopResultBuilder]: For program point L7184-6(line 7184) no Hoare annotation was computed. [2022-11-16 11:09:08,975 INFO L899 garLoopResultBuilder]: For program point L7184-4(line 7184) no Hoare annotation was computed. [2022-11-16 11:09:08,975 INFO L899 garLoopResultBuilder]: For program point L7184-3(line 7184) no Hoare annotation was computed. [2022-11-16 11:09:08,975 INFO L899 garLoopResultBuilder]: For program point L7184-8(line 7184) no Hoare annotation was computed. [2022-11-16 11:09:08,975 INFO L899 garLoopResultBuilder]: For program point nondet_boolFINAL(line 261) no Hoare annotation was computed. [2022-11-16 11:09:08,975 INFO L899 garLoopResultBuilder]: For program point nondet_boolEXIT(line 261) no Hoare annotation was computed. [2022-11-16 11:09:08,976 INFO L902 garLoopResultBuilder]: At program point nondet_boolENTRY(line 261) the Hoare annotation is: true [2022-11-16 11:09:08,976 INFO L899 garLoopResultBuilder]: For program point L7056-1(lines 7056 7058) no Hoare annotation was computed. [2022-11-16 11:09:08,976 INFO L895 garLoopResultBuilder]: At program point L7056(lines 7056 7058) the Hoare annotation is: (or (not (< 0 |#StackHeapBarrier|)) (= |old(#valid)| |#valid|)) [2022-11-16 11:09:08,976 INFO L899 garLoopResultBuilder]: For program point aws_mem_releaseEXIT(lines 7055 7068) no Hoare annotation was computed. [2022-11-16 11:09:08,976 INFO L895 garLoopResultBuilder]: At program point aws_mem_releaseENTRY(lines 7055 7068) the Hoare annotation is: (or (not (< 0 |#StackHeapBarrier|)) (= |old(#valid)| |#valid|)) [2022-11-16 11:09:08,976 INFO L899 garLoopResultBuilder]: For program point L7063(lines 7063 7067) no Hoare annotation was computed. [2022-11-16 11:09:08,976 INFO L899 garLoopResultBuilder]: For program point L7059-1(lines 7059 7061) no Hoare annotation was computed. [2022-11-16 11:09:08,976 INFO L895 garLoopResultBuilder]: At program point L7059(lines 7059 7061) the Hoare annotation is: (or (not (< 0 |#StackHeapBarrier|)) (= |old(#valid)| |#valid|)) [2022-11-16 11:09:08,976 INFO L899 garLoopResultBuilder]: For program point L7063-2(lines 7055 7068) no Hoare annotation was computed. [2022-11-16 11:09:08,976 INFO L899 garLoopResultBuilder]: For program point L211-2(lines 210 212) no Hoare annotation was computed. [2022-11-16 11:09:08,977 INFO L902 garLoopResultBuilder]: At program point assume_abort_if_notENTRY(lines 210 212) the Hoare annotation is: true [2022-11-16 11:09:08,977 INFO L899 garLoopResultBuilder]: For program point L211(line 211) no Hoare annotation was computed. [2022-11-16 11:09:08,977 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 210 212) no Hoare annotation was computed. [2022-11-16 11:09:08,977 INFO L899 garLoopResultBuilder]: For program point can_fail_allocatorFINAL(lines 6883 6885) no Hoare annotation was computed. [2022-11-16 11:09:08,977 INFO L899 garLoopResultBuilder]: For program point can_fail_allocatorEXIT(lines 6883 6885) no Hoare annotation was computed. [2022-11-16 11:09:08,977 INFO L902 garLoopResultBuilder]: At program point can_fail_allocatorENTRY(lines 6883 6885) the Hoare annotation is: true [2022-11-16 11:09:08,977 INFO L899 garLoopResultBuilder]: For program point aws_byte_buf_secure_zeroEXIT(lines 7218 7225) no Hoare annotation was computed. [2022-11-16 11:09:08,977 INFO L899 garLoopResultBuilder]: For program point L7224-2(line 7224) no Hoare annotation was computed. [2022-11-16 11:09:08,978 INFO L895 garLoopResultBuilder]: At program point L7224-1(line 7224) the Hoare annotation is: (let ((.cse8 (select |#memory_int| |aws_byte_buf_secure_zero_~buf#1.base|)) (.cse9 (+ |aws_byte_buf_secure_zero_#in~buf#1.offset| 16))) (let ((.cse2 (not (= (mod (select (select |#memory_int| |aws_byte_buf_secure_zero_#in~buf#1.base|) .cse9) 18446744073709551616) 0))) (.cse3 (= (select .cse8 |aws_byte_buf_secure_zero_~buf#1.offset|) 0)) (.cse4 (<= 2 |aws_byte_buf_secure_zero_~buf#1.base|)) (.cse5 (<= 1 |aws_byte_buf_secure_zero_#t~ret644#1|)) (.cse6 (<= |aws_byte_buf_secure_zero_#t~ret644#1| 1)) (.cse1 (<= 2 |aws_byte_buf_secure_zero_#in~buf#1.base|)) (.cse0 (select |old(#memory_$Pointer$.base)| |aws_byte_buf_secure_zero_#in~buf#1.base|))) (or (= |aws_byte_buf_secure_zero_#in~buf#1.base| (select .cse0 8)) (not (< 0 |#StackHeapBarrier|)) (not .cse1) (and .cse2 (= |aws_byte_buf_secure_zero_~buf#1.base| |aws_byte_buf_secure_zero_#in~buf#1.base|) (= |aws_byte_buf_secure_zero_#in~buf#1.offset| |aws_byte_buf_secure_zero_~buf#1.offset|) .cse3 .cse4 .cse5 .cse6 .cse1) (let ((.cse7 (+ |aws_byte_buf_secure_zero_~buf#1.offset| 8))) (and .cse2 (not (= |aws_byte_buf_secure_zero_~buf#1.base| (select (select |#memory_$Pointer$.base| |aws_byte_buf_secure_zero_~buf#1.base|) .cse7))) (not (= (mod (select .cse8 (+ 16 |aws_byte_buf_secure_zero_~buf#1.offset|)) 18446744073709551616) 0)) (= |aws_byte_buf_secure_zero_~buf#1.offset| 0) (= (select (select |#memory_$Pointer$.offset| |aws_byte_buf_secure_zero_#in~buf#1.base|) 8) 0) .cse3 .cse4 (not (= |aws_byte_buf_secure_zero_#in~buf#1.base| (select (select |#memory_$Pointer$.base| |aws_byte_buf_secure_zero_#in~buf#1.base|) 8))) (= (select (select |#memory_$Pointer$.offset| |aws_byte_buf_secure_zero_~buf#1.base|) .cse7) 0) .cse5 .cse6 .cse1 (= (select .cse0 (+ |aws_byte_buf_secure_zero_#in~buf#1.offset| 8)) 0))) (not (= |aws_byte_buf_secure_zero_#in~buf#1.offset| 0)) (= (mod (select (select |old(#memory_int)| |aws_byte_buf_secure_zero_#in~buf#1.base|) .cse9) 18446744073709551616) 0) (not (= (select (select |old(#memory_$Pointer$.offset)| |aws_byte_buf_secure_zero_#in~buf#1.base|) 8) 0))))) [2022-11-16 11:09:08,978 INFO L895 garLoopResultBuilder]: At program point L7224(line 7224) the Hoare annotation is: (let ((.cse6 (select |#memory_int| |aws_byte_buf_secure_zero_~buf#1.base|))) (let ((.cse0 (select |old(#memory_$Pointer$.base)| |aws_byte_buf_secure_zero_#in~buf#1.base|)) (.cse2 (= (select .cse6 |aws_byte_buf_secure_zero_~buf#1.offset|) 0)) (.cse4 (let ((.cse5 (select .cse6 16))) (<= .cse5 (+ (* 18446744073709551616 (div (+ (- 1) .cse5) 18446744073709551616)) 18446744073709551615)))) (.cse1 (+ |aws_byte_buf_secure_zero_#in~buf#1.offset| 16))) (or (= |aws_byte_buf_secure_zero_#in~buf#1.base| (select .cse0 8)) (let ((.cse3 (+ |aws_byte_buf_secure_zero_~buf#1.offset| 8))) (and (not (= (mod (select (select |#memory_int| |aws_byte_buf_secure_zero_#in~buf#1.base|) .cse1) 18446744073709551616) 0)) (= |aws_byte_buf_secure_zero_~buf#1.offset| 0) (= (select (select |#memory_$Pointer$.offset| |aws_byte_buf_secure_zero_#in~buf#1.base|) 8) 0) .cse2 (<= 2 |aws_byte_buf_secure_zero_~buf#1.base|) (not (= |aws_byte_buf_secure_zero_#in~buf#1.base| (select (select |#memory_$Pointer$.base| |aws_byte_buf_secure_zero_#in~buf#1.base|) 8))) (= (select (select |#memory_$Pointer$.offset| |aws_byte_buf_secure_zero_~buf#1.base|) .cse3) 0) .cse4 (= (select (select |#memory_$Pointer$.base| |aws_byte_buf_secure_zero_~buf#1.base|) .cse3) 0) (= (select .cse0 (+ |aws_byte_buf_secure_zero_#in~buf#1.offset| 8)) 0))) (not (< 0 |#StackHeapBarrier|)) (not (<= 2 |aws_byte_buf_secure_zero_#in~buf#1.base|)) (not (= |aws_byte_buf_secure_zero_#in~buf#1.offset| 0)) (and (= |aws_byte_buf_secure_zero_~buf#1.base| |aws_byte_buf_secure_zero_#in~buf#1.base|) (= |aws_byte_buf_secure_zero_#in~buf#1.offset| |aws_byte_buf_secure_zero_~buf#1.offset|) .cse2 .cse4) (= (mod (select (select |old(#memory_int)| |aws_byte_buf_secure_zero_#in~buf#1.base|) .cse1) 18446744073709551616) 0) (not (= (select (select |old(#memory_$Pointer$.offset)| |aws_byte_buf_secure_zero_#in~buf#1.base|) 8) 0))))) [2022-11-16 11:09:08,978 INFO L895 garLoopResultBuilder]: At program point aws_byte_buf_secure_zeroENTRY(lines 7218 7225) the Hoare annotation is: (or (= |aws_byte_buf_secure_zero_#in~buf#1.base| (select (select |old(#memory_$Pointer$.base)| |aws_byte_buf_secure_zero_#in~buf#1.base|) 8)) (and (= |old(#memory_real)| |#memory_real|) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|)) (not (< 0 |#StackHeapBarrier|)) (not (<= 2 |aws_byte_buf_secure_zero_#in~buf#1.base|)) (not (= |aws_byte_buf_secure_zero_#in~buf#1.offset| 0)) (= (mod (select (select |old(#memory_int)| |aws_byte_buf_secure_zero_#in~buf#1.base|) (+ |aws_byte_buf_secure_zero_#in~buf#1.offset| 16)) 18446744073709551616) 0) (not (= (select (select |old(#memory_$Pointer$.offset)| |aws_byte_buf_secure_zero_#in~buf#1.base|) 8) 0))) [2022-11-16 11:09:08,978 INFO L895 garLoopResultBuilder]: At program point L7219-1(line 7219) the Hoare annotation is: (or (= |aws_byte_buf_secure_zero_#in~buf#1.base| (select (select |old(#memory_$Pointer$.base)| |aws_byte_buf_secure_zero_#in~buf#1.base|) 8)) (not (< 0 |#StackHeapBarrier|)) (not (<= 2 |aws_byte_buf_secure_zero_#in~buf#1.base|)) (not (= |aws_byte_buf_secure_zero_#in~buf#1.offset| 0)) (and (= |old(#memory_real)| |#memory_real|) (= |aws_byte_buf_secure_zero_~buf#1.base| |aws_byte_buf_secure_zero_#in~buf#1.base|) (= |#memory_int| |old(#memory_int)|) (= |aws_byte_buf_secure_zero_#in~buf#1.offset| |aws_byte_buf_secure_zero_~buf#1.offset|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|)) (= (mod (select (select |old(#memory_int)| |aws_byte_buf_secure_zero_#in~buf#1.base|) (+ |aws_byte_buf_secure_zero_#in~buf#1.offset| 16)) 18446744073709551616) 0) (not (= (select (select |old(#memory_$Pointer$.offset)| |aws_byte_buf_secure_zero_#in~buf#1.base|) 8) 0)) (and (<= 0 |aws_byte_buf_secure_zero_#t~ret640#1|) (<= 2 |aws_byte_buf_secure_zero_~buf#1.base|) (<= |aws_byte_buf_secure_zero_#t~ret640#1| 0))) [2022-11-16 11:09:08,979 INFO L899 garLoopResultBuilder]: For program point L7220-2(lines 7220 7222) no Hoare annotation was computed. [2022-11-16 11:09:08,979 INFO L895 garLoopResultBuilder]: At program point L7219(line 7219) the Hoare annotation is: (or (= |aws_byte_buf_secure_zero_#in~buf#1.base| (select (select |old(#memory_$Pointer$.base)| |aws_byte_buf_secure_zero_#in~buf#1.base|) 8)) (not (< 0 |#StackHeapBarrier|)) (not (<= 2 |aws_byte_buf_secure_zero_#in~buf#1.base|)) (not (= |aws_byte_buf_secure_zero_#in~buf#1.offset| 0)) (and (= |old(#memory_real)| |#memory_real|) (= |aws_byte_buf_secure_zero_~buf#1.base| |aws_byte_buf_secure_zero_#in~buf#1.base|) (= |#memory_int| |old(#memory_int)|) (= |aws_byte_buf_secure_zero_#in~buf#1.offset| |aws_byte_buf_secure_zero_~buf#1.offset|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|)) (= (mod (select (select |old(#memory_int)| |aws_byte_buf_secure_zero_#in~buf#1.base|) (+ |aws_byte_buf_secure_zero_#in~buf#1.offset| 16)) 18446744073709551616) 0) (not (= (select (select |old(#memory_$Pointer$.offset)| |aws_byte_buf_secure_zero_#in~buf#1.base|) 8) 0))) [2022-11-16 11:09:08,979 INFO L899 garLoopResultBuilder]: For program point L7220(lines 7220 7222) no Hoare annotation was computed. [2022-11-16 11:09:08,979 INFO L895 garLoopResultBuilder]: At program point L8555(line 8555) the Hoare annotation is: (or (= |aws_byte_buf_secure_zero_#in~buf#1.base| (select (select |old(#memory_$Pointer$.base)| |aws_byte_buf_secure_zero_#in~buf#1.base|) 8)) (not (< 0 |#StackHeapBarrier|)) (not (<= 2 |aws_byte_buf_secure_zero_#in~buf#1.base|)) (not (= |aws_byte_buf_secure_zero_#in~buf#1.offset| 0)) (= (mod (select (select |old(#memory_int)| |aws_byte_buf_secure_zero_#in~buf#1.base|) (+ |aws_byte_buf_secure_zero_#in~buf#1.offset| 16)) 18446744073709551616) 0) (let ((.cse0 (select (select |#memory_$Pointer$.base| |aws_byte_buf_secure_zero_~buf#1.base|) (+ |aws_byte_buf_secure_zero_~buf#1.offset| 8)))) (and (= |aws_byte_buf_secure_zero_aws_secure_zero_~pBuf#1.offset| 0) (= |old(#memory_real)| |#memory_real|) (= |aws_byte_buf_secure_zero_~buf#1.base| |aws_byte_buf_secure_zero_#in~buf#1.base|) (= |aws_byte_buf_secure_zero_aws_secure_zero_~pBuf#1.base| .cse0) (= |#memory_int| |old(#memory_int)|) (= |aws_byte_buf_secure_zero_~buf#1.offset| 0) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|) (= |aws_byte_buf_secure_zero_aws_secure_zero_~bufsize#1| (select (select |#memory_int| |aws_byte_buf_secure_zero_~buf#1.base|) 16)) (not (= .cse0 0)))) (not (= (select (select |old(#memory_$Pointer$.offset)| |aws_byte_buf_secure_zero_#in~buf#1.base|) 8) 0))) [2022-11-16 11:09:08,979 INFO L899 garLoopResultBuilder]: For program point L7219-2(line 7219) no Hoare annotation was computed. [2022-11-16 11:09:08,979 INFO L899 garLoopResultBuilder]: For program point L8555-1(line 8555) no Hoare annotation was computed. [2022-11-16 11:09:08,979 INFO L899 garLoopResultBuilder]: For program point L8554(lines 8554 8571) no Hoare annotation was computed. [2022-11-16 11:09:08,980 INFO L899 garLoopResultBuilder]: For program point aws_byte_buf_secure_zeroFINAL(lines 7218 7225) no Hoare annotation was computed. [2022-11-16 11:09:08,980 INFO L899 garLoopResultBuilder]: For program point L7228-2(line 7228) no Hoare annotation was computed. [2022-11-16 11:09:08,980 INFO L895 garLoopResultBuilder]: At program point L8768(line 8768) the Hoare annotation is: (and (= |ULTIMATE.start_aws_byte_buf_clean_up_secure_harness_~#buf~3#1.offset| 0) (<= 0 |ULTIMATE.start_aws_byte_buf_is_bounded_#res#1|) (<= 0 |ULTIMATE.start_aws_byte_buf_clean_up_secure_harness_#t~ret1140#1|) (= (select |#valid| |ULTIMATE.start_aws_byte_buf_clean_up_secure_harness_~#buf~3#1.base|) 1) (< |#StackHeapBarrier| |ULTIMATE.start_aws_byte_buf_clean_up_secure_harness_~#buf~3#1.base|) (< 0 |#StackHeapBarrier|)) [2022-11-16 11:09:08,980 INFO L895 garLoopResultBuilder]: At program point L7228-1(line 7228) the Hoare annotation is: (let ((.cse13 (select |#memory_$Pointer$.base| |ULTIMATE.start_aws_byte_buf_clean_up_secure_~buf#1.base|)) (.cse12 (select |#memory_int| |ULTIMATE.start_aws_byte_buf_clean_up_secure_~buf#1.base|))) (let ((.cse6 (<= 2 |ULTIMATE.start_aws_byte_buf_clean_up_secure_harness_~#buf~3#1.base|)) (.cse10 (<= 2 |ULTIMATE.start_aws_byte_buf_clean_up_secure_~buf#1.base|)) (.cse0 (= |ULTIMATE.start_aws_byte_buf_clean_up_secure_~buf#1.base| |ULTIMATE.start_aws_byte_buf_clean_up_secure_harness_~#buf~3#1.base|)) (.cse1 (not (= (mod (select .cse12 (+ |ULTIMATE.start_aws_byte_buf_clean_up_secure_~buf#1.offset| 16)) 18446744073709551616) 0))) (.cse2 (select .cse13 8)) (.cse3 (= |ULTIMATE.start_ensure_byte_buf_has_allocated_buffer_member_~buf#1.base| |ULTIMATE.start_aws_byte_buf_clean_up_secure_harness_~#buf~3#1.base|)) (.cse4 (= |ULTIMATE.start_aws_byte_buf_clean_up_secure_~buf#1.offset| 0)) (.cse5 (not (= (select .cse13 (+ |ULTIMATE.start_aws_byte_buf_clean_up_secure_~buf#1.offset| 8)) 0))) (.cse7 (= |ULTIMATE.start_ensure_byte_buf_has_allocated_buffer_member_~buf#1.offset| 0)) (.cse8 (= |ULTIMATE.start_aws_byte_buf_clean_up_secure_~buf#1.offset| |ULTIMATE.start_aws_byte_buf_clean_up_secure_harness_~#buf~3#1.offset|)) (.cse9 (< 0 |#StackHeapBarrier|))) (or (and .cse0 (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_aws_byte_buf_clean_up_secure_harness_~#buf~3#1.base|) 8) 0) .cse1 (<= (+ 2 .cse2) |ULTIMATE.start_aws_byte_buf_clean_up_secure_~buf#1.base|) .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9) (and (= |ULTIMATE.start_aws_byte_buf_clean_up_secure_harness_~#buf~3#1.offset| 0) .cse10 (<= |ULTIMATE.start_aws_byte_buf_clean_up_secure_#t~ret645#1| 0) (<= 0 |ULTIMATE.start_aws_byte_buf_clean_up_secure_#t~ret645#1|) (not (= .cse2 0)) (not (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_aws_byte_buf_clean_up_secure_harness_~#buf~3#1.base|) 8) 0)) .cse3 .cse4 .cse6 .cse7 .cse9) (and .cse10 (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_aws_byte_buf_clean_up_secure_~buf#1.base|) 8) 0) .cse0 .cse1 (not (= |ULTIMATE.start_aws_byte_buf_clean_up_secure_~buf#1.base| .cse2)) (let ((.cse11 (select .cse12 |ULTIMATE.start_aws_byte_buf_clean_up_secure_~buf#1.offset|))) (<= .cse11 (+ 18446744073709551615 (* 18446744073709551616 (div (+ (- 1) .cse11) 18446744073709551616))))) .cse3 .cse4 .cse5 .cse7 .cse8 .cse9)))) [2022-11-16 11:09:08,980 INFO L899 garLoopResultBuilder]: For program point L8768-1(line 8768) no Hoare annotation was computed. [2022-11-16 11:09:08,981 INFO L895 garLoopResultBuilder]: At program point L7228(line 7228) the Hoare annotation is: (let ((.cse0 (select |#memory_$Pointer$.base| |ULTIMATE.start_aws_byte_buf_clean_up_secure_~buf#1.base|))) (and (= |ULTIMATE.start_aws_byte_buf_clean_up_secure_~buf#1.base| |ULTIMATE.start_aws_byte_buf_clean_up_secure_harness_~#buf~3#1.base|) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_aws_byte_buf_clean_up_secure_harness_~#buf~3#1.base|) 8) 0) (<= (+ 2 (select .cse0 8)) |ULTIMATE.start_aws_byte_buf_clean_up_secure_~buf#1.base|) (= |ULTIMATE.start_ensure_byte_buf_has_allocated_buffer_member_~buf#1.base| |ULTIMATE.start_aws_byte_buf_clean_up_secure_harness_~#buf~3#1.base|) (= |ULTIMATE.start_aws_byte_buf_clean_up_secure_~buf#1.offset| 0) (not (= (select .cse0 (+ |ULTIMATE.start_aws_byte_buf_clean_up_secure_~buf#1.offset| 8)) 0)) (<= 2 |ULTIMATE.start_aws_byte_buf_clean_up_secure_harness_~#buf~3#1.base|) (= |ULTIMATE.start_ensure_byte_buf_has_allocated_buffer_member_~buf#1.offset| 0) (= |ULTIMATE.start_aws_byte_buf_clean_up_secure_~buf#1.offset| |ULTIMATE.start_aws_byte_buf_clean_up_secure_harness_~#buf~3#1.offset|) (< 0 |#StackHeapBarrier|))) [2022-11-16 11:09:08,981 INFO L899 garLoopResultBuilder]: For program point L6613-1(line 6613) no Hoare annotation was computed. [2022-11-16 11:09:08,981 INFO L895 garLoopResultBuilder]: At program point L6613(line 6613) the Hoare annotation is: (and (= |ULTIMATE.start_ensure_byte_buf_has_allocated_buffer_member_~buf#1.offset| |ULTIMATE.start_aws_byte_buf_clean_up_secure_harness_~#buf~3#1.offset|) (<= 0 |ULTIMATE.start_aws_byte_buf_is_bounded_#res#1|) (= (select |#valid| |ULTIMATE.start_aws_byte_buf_clean_up_secure_harness_~#buf~3#1.base|) 1) (< |#StackHeapBarrier| |ULTIMATE.start_aws_byte_buf_clean_up_secure_harness_~#buf~3#1.base|) (= |ULTIMATE.start_ensure_byte_buf_has_allocated_buffer_member_~buf#1.base| |ULTIMATE.start_aws_byte_buf_clean_up_secure_harness_~#buf~3#1.base|) (= |ULTIMATE.start_ensure_byte_buf_has_allocated_buffer_member_~buf#1.offset| 0) (< 0 |#StackHeapBarrier|)) [2022-11-16 11:09:08,981 INFO L899 garLoopResultBuilder]: For program point L6609(lines 6609 6614) no Hoare annotation was computed. [2022-11-16 11:09:08,981 INFO L902 garLoopResultBuilder]: At program point L8785(line 8785) the Hoare annotation is: true [2022-11-16 11:09:08,981 INFO L899 garLoopResultBuilder]: For program point L7204-2(line 7204) no Hoare annotation was computed. [2022-11-16 11:09:08,981 INFO L895 garLoopResultBuilder]: At program point L7204-1(line 7204) the Hoare annotation is: (let ((.cse0 (select |#memory_int| |ULTIMATE.start_aws_byte_buf_clean_up_secure_~buf#1.base|))) (and (= |ULTIMATE.start_aws_byte_buf_clean_up_secure_~buf#1.base| |ULTIMATE.start_aws_byte_buf_clean_up_~buf#1.base|) (= |ULTIMATE.start_aws_byte_buf_clean_up_secure_~buf#1.base| |ULTIMATE.start_aws_byte_buf_clean_up_secure_harness_~#buf~3#1.base|) (not (= (mod (select .cse0 (+ |ULTIMATE.start_aws_byte_buf_clean_up_secure_~buf#1.offset| 16)) 18446744073709551616) 0)) (<= 0 (select (select |#memory_int| |ULTIMATE.start_aws_byte_buf_clean_up_~buf#1.base|) |ULTIMATE.start_aws_byte_buf_clean_up_~buf#1.offset|)) (= |ULTIMATE.start_ensure_byte_buf_has_allocated_buffer_member_~buf#1.base| |ULTIMATE.start_aws_byte_buf_clean_up_secure_harness_~#buf~3#1.base|) (= |ULTIMATE.start_aws_byte_buf_clean_up_secure_harness_~#buf~3#1.offset| |ULTIMATE.start_aws_byte_buf_clean_up_~buf#1.offset|) (= |ULTIMATE.start_aws_byte_buf_clean_up_secure_~buf#1.offset| 0) (<= 2 |ULTIMATE.start_aws_byte_buf_clean_up_secure_harness_~#buf~3#1.base|) (<= (select .cse0 |ULTIMATE.start_aws_byte_buf_clean_up_secure_~buf#1.offset|) 0) (= |ULTIMATE.start_ensure_byte_buf_has_allocated_buffer_member_~buf#1.offset| 0) (= |ULTIMATE.start_aws_byte_buf_clean_up_secure_~buf#1.offset| |ULTIMATE.start_aws_byte_buf_clean_up_secure_harness_~#buf~3#1.offset|) (< 0 |#StackHeapBarrier|))) [2022-11-16 11:09:08,982 INFO L895 garLoopResultBuilder]: At program point L7204(line 7204) the Hoare annotation is: (let ((.cse0 (select |#memory_int| |ULTIMATE.start_aws_byte_buf_clean_up_secure_~buf#1.base|))) (and (= |ULTIMATE.start_aws_byte_buf_clean_up_secure_~buf#1.base| |ULTIMATE.start_aws_byte_buf_clean_up_~buf#1.base|) (= |ULTIMATE.start_aws_byte_buf_clean_up_secure_~buf#1.base| |ULTIMATE.start_aws_byte_buf_clean_up_secure_harness_~#buf~3#1.base|) (not (= (mod (select .cse0 (+ |ULTIMATE.start_aws_byte_buf_clean_up_secure_~buf#1.offset| 16)) 18446744073709551616) 0)) (<= 0 (select (select |#memory_int| |ULTIMATE.start_aws_byte_buf_clean_up_~buf#1.base|) |ULTIMATE.start_aws_byte_buf_clean_up_~buf#1.offset|)) (= |ULTIMATE.start_ensure_byte_buf_has_allocated_buffer_member_~buf#1.base| |ULTIMATE.start_aws_byte_buf_clean_up_secure_harness_~#buf~3#1.base|) (= |ULTIMATE.start_aws_byte_buf_clean_up_secure_harness_~#buf~3#1.offset| |ULTIMATE.start_aws_byte_buf_clean_up_~buf#1.offset|) (= |ULTIMATE.start_aws_byte_buf_clean_up_secure_~buf#1.offset| 0) (<= 2 |ULTIMATE.start_aws_byte_buf_clean_up_secure_harness_~#buf~3#1.base|) (<= (select .cse0 |ULTIMATE.start_aws_byte_buf_clean_up_secure_~buf#1.offset|) 0) (= |ULTIMATE.start_ensure_byte_buf_has_allocated_buffer_member_~buf#1.offset| 0) (= |ULTIMATE.start_aws_byte_buf_clean_up_secure_~buf#1.offset| |ULTIMATE.start_aws_byte_buf_clean_up_secure_harness_~#buf~3#1.offset|) (< 0 |#StackHeapBarrier|))) [2022-11-16 11:09:08,982 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-11-16 11:09:08,982 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-16 11:09:08,982 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-11-16 11:09:08,983 INFO L899 garLoopResultBuilder]: For program point L7229-1(line 7229) no Hoare annotation was computed. [2022-11-16 11:09:08,983 INFO L895 garLoopResultBuilder]: At program point L7229(line 7229) the Hoare annotation is: (and (<= 2 |ULTIMATE.start_aws_byte_buf_clean_up_secure_~buf#1.base|) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_aws_byte_buf_clean_up_secure_~buf#1.base|) 8) 0) (= |ULTIMATE.start_aws_byte_buf_clean_up_secure_~buf#1.base| |ULTIMATE.start_aws_byte_buf_clean_up_secure_harness_~#buf~3#1.base|) (not (= (mod (select (select |#memory_int| |ULTIMATE.start_aws_byte_buf_clean_up_secure_~buf#1.base|) (+ |ULTIMATE.start_aws_byte_buf_clean_up_secure_~buf#1.offset| 16)) 18446744073709551616) 0)) (not (= |ULTIMATE.start_aws_byte_buf_clean_up_secure_~buf#1.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_aws_byte_buf_clean_up_secure_~buf#1.base|) 8))) (not (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_aws_byte_buf_clean_up_secure_harness_~#buf~3#1.base|) 8) 0)) (= |ULTIMATE.start_ensure_byte_buf_has_allocated_buffer_member_~buf#1.base| |ULTIMATE.start_aws_byte_buf_clean_up_secure_harness_~#buf~3#1.base|) (= |ULTIMATE.start_aws_byte_buf_clean_up_secure_~buf#1.offset| 0) (= |ULTIMATE.start_ensure_byte_buf_has_allocated_buffer_member_~buf#1.offset| 0) (= |ULTIMATE.start_aws_byte_buf_clean_up_secure_~buf#1.offset| |ULTIMATE.start_aws_byte_buf_clean_up_secure_harness_~#buf~3#1.offset|) (< 0 |#StackHeapBarrier|)) [2022-11-16 11:09:08,983 INFO L895 garLoopResultBuilder]: At program point L6610(line 6610) the Hoare annotation is: (and (= |ULTIMATE.start_ensure_byte_buf_has_allocated_buffer_member_~buf#1.offset| |ULTIMATE.start_aws_byte_buf_clean_up_secure_harness_~#buf~3#1.offset|) (<= 0 |ULTIMATE.start_aws_byte_buf_is_bounded_#res#1|) (= (select |#valid| |ULTIMATE.start_aws_byte_buf_clean_up_secure_harness_~#buf~3#1.base|) 1) (< |#StackHeapBarrier| |ULTIMATE.start_aws_byte_buf_clean_up_secure_harness_~#buf~3#1.base|) (= |ULTIMATE.start_ensure_byte_buf_has_allocated_buffer_member_~buf#1.base| |ULTIMATE.start_aws_byte_buf_clean_up_secure_harness_~#buf~3#1.base|) (= |ULTIMATE.start_ensure_byte_buf_has_allocated_buffer_member_~buf#1.offset| 0) (< 0 |#StackHeapBarrier|)) [2022-11-16 11:09:08,983 INFO L899 garLoopResultBuilder]: For program point L8782-1(line 8782) no Hoare annotation was computed. [2022-11-16 11:09:08,983 INFO L899 garLoopResultBuilder]: For program point L6610-3(lines 6610 6612) no Hoare annotation was computed. [2022-11-16 11:09:08,984 INFO L899 garLoopResultBuilder]: For program point L6610-1(lines 6610 6612) no Hoare annotation was computed. [2022-11-16 11:09:08,984 INFO L895 garLoopResultBuilder]: At program point L8782(line 8782) the Hoare annotation is: (let ((.cse0 (select |#memory_$Pointer$.base| |ULTIMATE.start_aws_byte_buf_clean_up_secure_harness_~#buf~3#1.base|)) (.cse1 (+ |ULTIMATE.start_aws_byte_buf_clean_up_secure_harness_~#buf~3#1.offset| 24)) (.cse4 (select |#memory_$Pointer$.offset| |ULTIMATE.start_aws_byte_buf_clean_up_secure_harness_~#buf~3#1.base|)) (.cse2 (+ |ULTIMATE.start_aws_byte_buf_clean_up_secure_harness_~#buf~3#1.offset| 8)) (.cse3 (select |#memory_int| |ULTIMATE.start_aws_byte_buf_clean_up_secure_~buf#1.base|))) (and (= (select .cse0 .cse1) 0) (= |ULTIMATE.start_aws_byte_buf_clean_up_secure_~buf#1.base| |ULTIMATE.start_aws_byte_buf_clean_up_~buf#1.base|) (= |ULTIMATE.start_aws_byte_buf_clean_up_secure_~buf#1.base| |ULTIMATE.start_aws_byte_buf_clean_up_secure_harness_~#buf~3#1.base|) (= (* 18446744073709551616 (div |ULTIMATE.start_aws_byte_buf_clean_up_secure_harness_#t~mem1144#1| 18446744073709551616)) |ULTIMATE.start_aws_byte_buf_clean_up_secure_harness_#t~mem1144#1|) (= (select .cse0 .cse2) 0) (= (select .cse3 |ULTIMATE.start_aws_byte_buf_clean_up_secure_~buf#1.offset|) 0) (= (select .cse4 .cse1) 0) (= 0 (select .cse4 .cse2)) (= (select .cse3 16) 0) (= |ULTIMATE.start_ensure_byte_buf_has_allocated_buffer_member_~buf#1.base| |ULTIMATE.start_aws_byte_buf_clean_up_secure_harness_~#buf~3#1.base|) (= |ULTIMATE.start_aws_byte_buf_clean_up_secure_harness_~#buf~3#1.offset| |ULTIMATE.start_aws_byte_buf_clean_up_~buf#1.offset|) (= |ULTIMATE.start_aws_byte_buf_clean_up_secure_~buf#1.offset| 0) (<= 2 |ULTIMATE.start_aws_byte_buf_clean_up_secure_harness_~#buf~3#1.base|) (= |ULTIMATE.start_ensure_byte_buf_has_allocated_buffer_member_~buf#1.offset| 0) (= |ULTIMATE.start_aws_byte_buf_clean_up_secure_~buf#1.offset| |ULTIMATE.start_aws_byte_buf_clean_up_secure_harness_~#buf~3#1.offset|) (< 0 |#StackHeapBarrier|))) [2022-11-16 11:09:08,984 INFO L895 garLoopResultBuilder]: At program point L8770(line 8770) the Hoare annotation is: (let ((.cse0 (select |#memory_$Pointer$.base| |ULTIMATE.start_aws_byte_buf_clean_up_secure_harness_~#buf~3#1.base|))) (and (= |ULTIMATE.start_ensure_byte_buf_has_allocated_buffer_member_~buf#1.offset| |ULTIMATE.start_aws_byte_buf_clean_up_secure_harness_~#buf~3#1.offset|) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_aws_byte_buf_clean_up_secure_harness_~#buf~3#1.base|) 8) 0) (<= (+ 2 (select .cse0 (+ |ULTIMATE.start_aws_byte_buf_clean_up_secure_harness_~#buf~3#1.offset| 8))) |ULTIMATE.start_aws_byte_buf_clean_up_secure_harness_~#buf~3#1.base|) (< |#StackHeapBarrier| |ULTIMATE.start_aws_byte_buf_clean_up_secure_harness_~#buf~3#1.base|) (not (= (select .cse0 8) 0)) (= |ULTIMATE.start_ensure_byte_buf_has_allocated_buffer_member_~buf#1.base| |ULTIMATE.start_aws_byte_buf_clean_up_secure_harness_~#buf~3#1.base|) (= |ULTIMATE.start_ensure_byte_buf_has_allocated_buffer_member_~buf#1.offset| 0) (< 0 |#StackHeapBarrier|))) [2022-11-16 11:09:08,984 INFO L899 garLoopResultBuilder]: For program point L7205-2(lines 7205 7207) no Hoare annotation was computed. [2022-11-16 11:09:08,984 INFO L899 garLoopResultBuilder]: For program point L7205(line 7205) no Hoare annotation was computed. [2022-11-16 11:09:08,984 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-16 11:09:08,984 INFO L899 garLoopResultBuilder]: For program point L7205-4(lines 7205 7207) no Hoare annotation was computed. [2022-11-16 11:09:08,985 INFO L895 garLoopResultBuilder]: At program point L8770-1(line 8770) the Hoare annotation is: (let ((.cse9 (select |#memory_$Pointer$.base| |ULTIMATE.start_aws_byte_buf_clean_up_secure_harness_~#buf~3#1.base|))) (let ((.cse0 (= |ULTIMATE.start_ensure_byte_buf_has_allocated_buffer_member_~buf#1.offset| |ULTIMATE.start_aws_byte_buf_clean_up_secure_harness_~#buf~3#1.offset|)) (.cse1 (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_aws_byte_buf_clean_up_secure_harness_~#buf~3#1.base|) 8) 0)) (.cse2 (<= (+ 2 (select .cse9 (+ |ULTIMATE.start_aws_byte_buf_clean_up_secure_harness_~#buf~3#1.offset| 8))) |ULTIMATE.start_aws_byte_buf_clean_up_secure_harness_~#buf~3#1.base|)) (.cse3 (not (= (select .cse9 8) 0))) (.cse4 (= |ULTIMATE.start_ensure_byte_buf_has_allocated_buffer_member_~buf#1.base| |ULTIMATE.start_aws_byte_buf_clean_up_secure_harness_~#buf~3#1.base|)) (.cse5 (= |ULTIMATE.start_ensure_byte_buf_has_allocated_buffer_member_~buf#1.offset| 0)) (.cse8 (<= 2 |ULTIMATE.start_aws_byte_buf_clean_up_secure_harness_~#buf~3#1.base|)) (.cse6 (< 0 |#StackHeapBarrier|))) (or (and .cse0 .cse1 .cse2 (< |#StackHeapBarrier| |ULTIMATE.start_aws_byte_buf_clean_up_secure_harness_~#buf~3#1.base|) .cse3 (= |ULTIMATE.start_aws_byte_buf_clean_up_secure_harness_#t~ret1141#1| 1) .cse4 .cse5 .cse6) (and .cse0 .cse1 .cse2 (<= 1 (let ((.cse7 (select (select |#memory_int| |ULTIMATE.start_aws_byte_buf_clean_up_secure_harness_~#buf~3#1.base|) |ULTIMATE.start_aws_byte_buf_clean_up_secure_harness_~#buf~3#1.offset|))) (+ (* 18446744073709551616 (div (+ 18446744073709551615 (- .cse7)) 18446744073709551616)) .cse7))) .cse3 .cse4 .cse8 .cse5 .cse6) (and (<= 0 |ULTIMATE.start_aws_byte_buf_clean_up_secure_harness_#t~ret1141#1|) (<= |ULTIMATE.start_aws_byte_buf_clean_up_secure_harness_#t~ret1141#1| 0) .cse8 .cse6)))) [2022-11-16 11:09:08,985 INFO L899 garLoopResultBuilder]: For program point L8770-2(line 8770) no Hoare annotation was computed. [2022-11-16 11:09:08,985 INFO L895 garLoopResultBuilder]: At program point L8779(lines 8779 8781) the Hoare annotation is: (let ((.cse0 (select |#memory_$Pointer$.base| |ULTIMATE.start_aws_byte_buf_clean_up_secure_harness_~#buf~3#1.base|)) (.cse1 (+ |ULTIMATE.start_aws_byte_buf_clean_up_secure_harness_~#buf~3#1.offset| 24)) (.cse4 (select |#memory_$Pointer$.offset| |ULTIMATE.start_aws_byte_buf_clean_up_secure_harness_~#buf~3#1.base|)) (.cse2 (+ |ULTIMATE.start_aws_byte_buf_clean_up_secure_harness_~#buf~3#1.offset| 8)) (.cse3 (select |#memory_int| |ULTIMATE.start_aws_byte_buf_clean_up_secure_~buf#1.base|))) (and (= (select .cse0 .cse1) 0) (= |ULTIMATE.start_aws_byte_buf_clean_up_secure_~buf#1.base| |ULTIMATE.start_aws_byte_buf_clean_up_~buf#1.base|) (= |ULTIMATE.start_aws_byte_buf_clean_up_secure_~buf#1.base| |ULTIMATE.start_aws_byte_buf_clean_up_secure_harness_~#buf~3#1.base|) (= |ULTIMATE.start_aws_byte_buf_clean_up_secure_harness_#t~mem1143#1.offset| 0) (= (select .cse0 .cse2) 0) (= (select .cse3 |ULTIMATE.start_aws_byte_buf_clean_up_secure_~buf#1.offset|) 0) (= (select .cse4 .cse1) 0) (= 0 (select .cse4 .cse2)) (= (select .cse3 16) 0) (= |ULTIMATE.start_ensure_byte_buf_has_allocated_buffer_member_~buf#1.base| |ULTIMATE.start_aws_byte_buf_clean_up_secure_harness_~#buf~3#1.base|) (= |ULTIMATE.start_aws_byte_buf_clean_up_secure_harness_~#buf~3#1.offset| |ULTIMATE.start_aws_byte_buf_clean_up_~buf#1.offset|) (= |ULTIMATE.start_aws_byte_buf_clean_up_secure_~buf#1.offset| 0) (<= 2 |ULTIMATE.start_aws_byte_buf_clean_up_secure_harness_~#buf~3#1.base|) (= |ULTIMATE.start_aws_byte_buf_clean_up_secure_harness_#t~mem1143#1.base| 0) (= |ULTIMATE.start_ensure_byte_buf_has_allocated_buffer_member_~buf#1.offset| 0) (= |ULTIMATE.start_aws_byte_buf_clean_up_secure_~buf#1.offset| |ULTIMATE.start_aws_byte_buf_clean_up_secure_harness_~#buf~3#1.offset|) (< 0 |#StackHeapBarrier|))) [2022-11-16 11:09:08,985 INFO L899 garLoopResultBuilder]: For program point L8779-1(lines 8779 8781) no Hoare annotation was computed. [2022-11-16 11:09:08,985 INFO L895 garLoopResultBuilder]: At program point L8783(line 8783) the Hoare annotation is: (let ((.cse0 (select |#memory_$Pointer$.base| |ULTIMATE.start_aws_byte_buf_clean_up_secure_harness_~#buf~3#1.base|)) (.cse1 (+ |ULTIMATE.start_aws_byte_buf_clean_up_secure_harness_~#buf~3#1.offset| 24)) (.cse4 (select |#memory_$Pointer$.offset| |ULTIMATE.start_aws_byte_buf_clean_up_secure_harness_~#buf~3#1.base|)) (.cse2 (+ |ULTIMATE.start_aws_byte_buf_clean_up_secure_harness_~#buf~3#1.offset| 8)) (.cse3 (select |#memory_int| |ULTIMATE.start_aws_byte_buf_clean_up_secure_~buf#1.base|))) (and (= (select .cse0 .cse1) 0) (= |ULTIMATE.start_aws_byte_buf_clean_up_secure_~buf#1.base| |ULTIMATE.start_aws_byte_buf_clean_up_~buf#1.base|) (= |ULTIMATE.start_aws_byte_buf_clean_up_secure_~buf#1.base| |ULTIMATE.start_aws_byte_buf_clean_up_secure_harness_~#buf~3#1.base|) (= |ULTIMATE.start_aws_byte_buf_clean_up_secure_harness_#t~mem1145#1| 0) (= (select .cse0 .cse2) 0) (= (select .cse3 |ULTIMATE.start_aws_byte_buf_clean_up_secure_~buf#1.offset|) 0) (= (select .cse4 .cse1) 0) (= 0 (select .cse4 .cse2)) (= (select .cse3 16) 0) (= |ULTIMATE.start_ensure_byte_buf_has_allocated_buffer_member_~buf#1.base| |ULTIMATE.start_aws_byte_buf_clean_up_secure_harness_~#buf~3#1.base|) (= |ULTIMATE.start_aws_byte_buf_clean_up_secure_harness_~#buf~3#1.offset| |ULTIMATE.start_aws_byte_buf_clean_up_~buf#1.offset|) (= |ULTIMATE.start_aws_byte_buf_clean_up_secure_~buf#1.offset| 0) (<= 2 |ULTIMATE.start_aws_byte_buf_clean_up_secure_harness_~#buf~3#1.base|) (= |ULTIMATE.start_ensure_byte_buf_has_allocated_buffer_member_~buf#1.offset| 0) (= |ULTIMATE.start_aws_byte_buf_clean_up_secure_~buf#1.offset| |ULTIMATE.start_aws_byte_buf_clean_up_secure_harness_~#buf~3#1.offset|) (< 0 |#StackHeapBarrier|))) [2022-11-16 11:09:08,985 INFO L899 garLoopResultBuilder]: For program point L8783-1(line 8783) no Hoare annotation was computed. [2022-11-16 11:09:08,986 INFO L895 garLoopResultBuilder]: At program point L7206(line 7206) the Hoare annotation is: (let ((.cse0 (select |#memory_int| |ULTIMATE.start_aws_byte_buf_clean_up_secure_~buf#1.base|))) (and (= |ULTIMATE.start_aws_byte_buf_clean_up_secure_~buf#1.base| |ULTIMATE.start_aws_byte_buf_clean_up_~buf#1.base|) (= |ULTIMATE.start_aws_byte_buf_clean_up_secure_~buf#1.base| |ULTIMATE.start_aws_byte_buf_clean_up_secure_harness_~#buf~3#1.base|) (not (= (mod (select .cse0 (+ |ULTIMATE.start_aws_byte_buf_clean_up_secure_~buf#1.offset| 16)) 18446744073709551616) 0)) (<= 0 (select (select |#memory_int| |ULTIMATE.start_aws_byte_buf_clean_up_~buf#1.base|) |ULTIMATE.start_aws_byte_buf_clean_up_~buf#1.offset|)) (= |ULTIMATE.start_ensure_byte_buf_has_allocated_buffer_member_~buf#1.base| |ULTIMATE.start_aws_byte_buf_clean_up_secure_harness_~#buf~3#1.base|) (= |ULTIMATE.start_aws_byte_buf_clean_up_secure_harness_~#buf~3#1.offset| |ULTIMATE.start_aws_byte_buf_clean_up_~buf#1.offset|) (= |ULTIMATE.start_aws_byte_buf_clean_up_secure_~buf#1.offset| 0) (<= 2 |ULTIMATE.start_aws_byte_buf_clean_up_secure_harness_~#buf~3#1.base|) (<= (select .cse0 |ULTIMATE.start_aws_byte_buf_clean_up_secure_~buf#1.offset|) 0) (= |ULTIMATE.start_ensure_byte_buf_has_allocated_buffer_member_~buf#1.offset| 0) (= |ULTIMATE.start_aws_byte_buf_clean_up_secure_~buf#1.offset| |ULTIMATE.start_aws_byte_buf_clean_up_secure_harness_~#buf~3#1.offset|) (< 0 |#StackHeapBarrier|))) [2022-11-16 11:09:08,986 INFO L899 garLoopResultBuilder]: For program point L7206-1(line 7206) no Hoare annotation was computed. [2022-11-16 11:09:08,986 INFO L895 garLoopResultBuilder]: At program point L7231-1(line 7231) the Hoare annotation is: (let ((.cse0 (select |#memory_$Pointer$.base| |ULTIMATE.start_aws_byte_buf_clean_up_secure_harness_~#buf~3#1.base|)) (.cse1 (+ |ULTIMATE.start_aws_byte_buf_clean_up_secure_harness_~#buf~3#1.offset| 24)) (.cse4 (select |#memory_$Pointer$.offset| |ULTIMATE.start_aws_byte_buf_clean_up_secure_harness_~#buf~3#1.base|)) (.cse2 (+ |ULTIMATE.start_aws_byte_buf_clean_up_secure_harness_~#buf~3#1.offset| 8)) (.cse3 (select |#memory_int| |ULTIMATE.start_aws_byte_buf_clean_up_secure_~buf#1.base|))) (and (<= 1 |ULTIMATE.start_aws_byte_buf_clean_up_secure_#t~ret646#1|) (= |ULTIMATE.start_ensure_byte_buf_has_allocated_buffer_member_~buf#1.offset| |ULTIMATE.start_aws_byte_buf_clean_up_secure_harness_~#buf~3#1.offset|) (= (select .cse0 .cse1) 0) (= |ULTIMATE.start_aws_byte_buf_clean_up_secure_~buf#1.base| |ULTIMATE.start_aws_byte_buf_clean_up_~buf#1.base|) (= |ULTIMATE.start_aws_byte_buf_clean_up_secure_~buf#1.base| |ULTIMATE.start_aws_byte_buf_clean_up_secure_harness_~#buf~3#1.base|) (= (select .cse0 .cse2) 0) (= (select .cse3 |ULTIMATE.start_aws_byte_buf_clean_up_secure_~buf#1.offset|) 0) (= (select .cse4 .cse1) 0) (= 0 (select .cse4 .cse2)) (<= |ULTIMATE.start_aws_byte_buf_clean_up_secure_#t~ret646#1| 1) (= (select .cse3 16) 0) (= |ULTIMATE.start_ensure_byte_buf_has_allocated_buffer_member_~buf#1.base| |ULTIMATE.start_aws_byte_buf_clean_up_secure_harness_~#buf~3#1.base|) (= |ULTIMATE.start_aws_byte_buf_clean_up_secure_harness_~#buf~3#1.offset| |ULTIMATE.start_aws_byte_buf_clean_up_~buf#1.offset|) (= |ULTIMATE.start_aws_byte_buf_clean_up_secure_~buf#1.offset| 0) (<= 2 |ULTIMATE.start_aws_byte_buf_clean_up_secure_harness_~#buf~3#1.base|) (= |ULTIMATE.start_aws_byte_buf_clean_up_secure_~buf#1.offset| |ULTIMATE.start_aws_byte_buf_clean_up_secure_harness_~#buf~3#1.offset|) (< 0 |#StackHeapBarrier|))) [2022-11-16 11:09:08,986 INFO L895 garLoopResultBuilder]: At program point L7231(line 7231) the Hoare annotation is: (let ((.cse0 (+ |ULTIMATE.start_aws_byte_buf_clean_up_secure_harness_~#buf~3#1.offset| 24)) (.cse1 (select |#memory_$Pointer$.offset| |ULTIMATE.start_aws_byte_buf_clean_up_secure_harness_~#buf~3#1.base|)) (.cse2 (select (select |#memory_int| |ULTIMATE.start_aws_byte_buf_clean_up_~buf#1.base|) |ULTIMATE.start_aws_byte_buf_clean_up_~buf#1.offset|))) (and (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_aws_byte_buf_clean_up_secure_harness_~#buf~3#1.base|) .cse0) 0) (= |ULTIMATE.start_aws_byte_buf_clean_up_secure_~buf#1.base| |ULTIMATE.start_aws_byte_buf_clean_up_~buf#1.base|) (= |ULTIMATE.start_aws_byte_buf_clean_up_secure_~buf#1.base| |ULTIMATE.start_aws_byte_buf_clean_up_secure_harness_~#buf~3#1.base|) (= (select .cse1 .cse0) 0) (<= 0 .cse2) (= 0 (select .cse1 (+ |ULTIMATE.start_aws_byte_buf_clean_up_secure_harness_~#buf~3#1.offset| 8))) (= (select (select |#memory_int| |ULTIMATE.start_aws_byte_buf_clean_up_secure_~buf#1.base|) 16) 0) (= |ULTIMATE.start_ensure_byte_buf_has_allocated_buffer_member_~buf#1.base| |ULTIMATE.start_aws_byte_buf_clean_up_secure_harness_~#buf~3#1.base|) (= |ULTIMATE.start_aws_byte_buf_clean_up_secure_harness_~#buf~3#1.offset| |ULTIMATE.start_aws_byte_buf_clean_up_~buf#1.offset|) (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_aws_byte_buf_clean_up_secure_~buf#1.base|) (+ |ULTIMATE.start_aws_byte_buf_clean_up_secure_~buf#1.offset| 8)) 0) (= |ULTIMATE.start_aws_byte_buf_clean_up_secure_~buf#1.offset| 0) (<= .cse2 0) (<= 2 |ULTIMATE.start_aws_byte_buf_clean_up_secure_harness_~#buf~3#1.base|) (= |ULTIMATE.start_ensure_byte_buf_has_allocated_buffer_member_~buf#1.offset| 0) (= |ULTIMATE.start_aws_byte_buf_clean_up_secure_~buf#1.offset| |ULTIMATE.start_aws_byte_buf_clean_up_secure_harness_~#buf~3#1.offset|) (< 0 |#StackHeapBarrier|))) [2022-11-16 11:09:08,986 INFO L899 garLoopResultBuilder]: For program point L8763(lines 8763 8784) no Hoare annotation was computed. [2022-11-16 11:09:08,986 INFO L899 garLoopResultBuilder]: For program point L7227(lines 7227 7232) no Hoare annotation was computed. [2022-11-16 11:09:08,986 INFO L899 garLoopResultBuilder]: For program point L7231-2(line 7231) no Hoare annotation was computed. [2022-11-16 11:09:08,986 INFO L899 garLoopResultBuilder]: For program point L6612-1(line 6612) no Hoare annotation was computed. [2022-11-16 11:09:08,987 INFO L895 garLoopResultBuilder]: At program point L6612(line 6612) the Hoare annotation is: (and (= |ULTIMATE.start_ensure_byte_buf_has_allocated_buffer_member_~buf#1.offset| |ULTIMATE.start_aws_byte_buf_clean_up_secure_harness_~#buf~3#1.offset|) (<= 0 |ULTIMATE.start_aws_byte_buf_is_bounded_#res#1|) (= (select |#valid| |ULTIMATE.start_aws_byte_buf_clean_up_secure_harness_~#buf~3#1.base|) 1) (< |#StackHeapBarrier| |ULTIMATE.start_aws_byte_buf_clean_up_secure_harness_~#buf~3#1.base|) (= |ULTIMATE.start_ensure_byte_buf_has_allocated_buffer_member_~buf#1.base| |ULTIMATE.start_aws_byte_buf_clean_up_secure_harness_~#buf~3#1.base|) (= |ULTIMATE.start_ensure_byte_buf_has_allocated_buffer_member_~buf#1.offset| 0) (< 0 |#StackHeapBarrier|)) [2022-11-16 11:09:08,987 INFO L895 garLoopResultBuilder]: At program point L6600(lines 6598 6601) the Hoare annotation is: (and (= |ULTIMATE.start_aws_byte_buf_clean_up_secure_harness_~#buf~3#1.offset| 0) (<= 0 |ULTIMATE.start_aws_byte_buf_is_bounded_#res#1|) (= (select |#valid| |ULTIMATE.start_aws_byte_buf_clean_up_secure_harness_~#buf~3#1.base|) 1) (< |#StackHeapBarrier| |ULTIMATE.start_aws_byte_buf_clean_up_secure_harness_~#buf~3#1.base|) (< 0 |#StackHeapBarrier|)) [2022-11-16 11:09:08,987 INFO L899 garLoopResultBuilder]: For program point L7203(lines 7203 7216) no Hoare annotation was computed. [2022-11-16 11:09:08,987 INFO L895 garLoopResultBuilder]: At program point L8776(lines 8776 8778) the Hoare annotation is: (let ((.cse0 (select |#memory_$Pointer$.base| |ULTIMATE.start_aws_byte_buf_clean_up_secure_harness_~#buf~3#1.base|)) (.cse1 (+ |ULTIMATE.start_aws_byte_buf_clean_up_secure_harness_~#buf~3#1.offset| 24)) (.cse4 (select |#memory_$Pointer$.offset| |ULTIMATE.start_aws_byte_buf_clean_up_secure_harness_~#buf~3#1.base|)) (.cse2 (+ |ULTIMATE.start_aws_byte_buf_clean_up_secure_harness_~#buf~3#1.offset| 8)) (.cse3 (select |#memory_int| |ULTIMATE.start_aws_byte_buf_clean_up_secure_~buf#1.base|))) (and (= (select .cse0 .cse1) 0) (= |ULTIMATE.start_aws_byte_buf_clean_up_secure_~buf#1.base| |ULTIMATE.start_aws_byte_buf_clean_up_~buf#1.base|) (= |ULTIMATE.start_aws_byte_buf_clean_up_secure_~buf#1.base| |ULTIMATE.start_aws_byte_buf_clean_up_secure_harness_~#buf~3#1.base|) (= |ULTIMATE.start_aws_byte_buf_clean_up_secure_harness_#t~mem1142#1.base| 0) (= (select .cse0 .cse2) 0) (= (select .cse3 |ULTIMATE.start_aws_byte_buf_clean_up_secure_~buf#1.offset|) 0) (= (select .cse4 .cse1) 0) (= 0 (select .cse4 .cse2)) (= (select .cse3 16) 0) (= |ULTIMATE.start_aws_byte_buf_clean_up_secure_harness_#t~mem1142#1.offset| 0) (= |ULTIMATE.start_ensure_byte_buf_has_allocated_buffer_member_~buf#1.base| |ULTIMATE.start_aws_byte_buf_clean_up_secure_harness_~#buf~3#1.base|) (= |ULTIMATE.start_aws_byte_buf_clean_up_secure_harness_~#buf~3#1.offset| |ULTIMATE.start_aws_byte_buf_clean_up_~buf#1.offset|) (= |ULTIMATE.start_aws_byte_buf_clean_up_secure_~buf#1.offset| 0) (<= 2 |ULTIMATE.start_aws_byte_buf_clean_up_secure_harness_~#buf~3#1.base|) (= |ULTIMATE.start_ensure_byte_buf_has_allocated_buffer_member_~buf#1.offset| 0) (= |ULTIMATE.start_aws_byte_buf_clean_up_secure_~buf#1.offset| |ULTIMATE.start_aws_byte_buf_clean_up_secure_harness_~#buf~3#1.offset|) (< 0 |#StackHeapBarrier|))) [2022-11-16 11:09:08,987 INFO L899 garLoopResultBuilder]: For program point L8776-1(lines 8776 8778) no Hoare annotation was computed. [2022-11-16 11:09:08,987 INFO L899 garLoopResultBuilder]: For program point L223(line 223) no Hoare annotation was computed. [2022-11-16 11:09:08,987 INFO L902 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 222 224) the Hoare annotation is: true [2022-11-16 11:09:08,987 INFO L899 garLoopResultBuilder]: For program point L223-1(line 223) no Hoare annotation was computed. [2022-11-16 11:09:08,988 INFO L899 garLoopResultBuilder]: For program point L223-3(lines 222 224) no Hoare annotation was computed. [2022-11-16 11:09:08,988 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 222 224) no Hoare annotation was computed. [2022-11-16 11:09:08,988 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 223) no Hoare annotation was computed. [2022-11-16 11:09:08,991 INFO L444 BasicCegarLoop]: Path program histogram: [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] [2022-11-16 11:09:08,994 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-16 11:09:09,010 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 11:09:09 BoogieIcfgContainer [2022-11-16 11:09:09,011 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-16 11:09:09,011 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-16 11:09:09,011 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-16 11:09:09,012 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-16 11:09:09,012 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 10:56:40" (3/4) ... [2022-11-16 11:09:09,016 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-16 11:09:09,024 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure aws_byte_buf_secure_zero [2022-11-16 11:09:09,024 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure bounded_malloc [2022-11-16 11:09:09,024 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure my_memset [2022-11-16 11:09:09,024 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure memset_impl [2022-11-16 11:09:09,024 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure aws_byte_buf_is_valid [2022-11-16 11:09:09,025 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure nondet_bool [2022-11-16 11:09:09,025 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure aws_mem_release [2022-11-16 11:09:09,025 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2022-11-16 11:09:09,026 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2022-11-16 11:09:09,026 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure can_fail_allocator [2022-11-16 11:09:09,047 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 127 nodes and edges [2022-11-16 11:09:09,049 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 60 nodes and edges [2022-11-16 11:09:09,050 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 26 nodes and edges [2022-11-16 11:09:09,051 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2022-11-16 11:09:09,053 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2022-11-16 11:09:09,054 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-11-16 11:09:09,063 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-16 11:09:09,065 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-16 11:09:09,114 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((buf == 0 && 0 <= \result) && \valid[buf] == 1) && unknown-#StackHeapBarrier-unknown < buf) && 0 < unknown-#StackHeapBarrier-unknown [2022-11-16 11:09:09,115 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((0 < n % 18446744073709551616 || \old(n) % 18446744073709551616 <= 0) && sp == s) && unknown-#memory_int-unknown == \old(unknown-#memory_int-unknown)[sp := unknown-#memory_int-unknown[sp]]) || !(0 < unknown-#StackHeapBarrier-unknown) [2022-11-16 11:09:09,749 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a357e79c-3ed0-4232-b8ad-4e429590df33/bin/uautomizer-tPACEb0tL8/witness.graphml [2022-11-16 11:09:09,749 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-16 11:09:09,750 INFO L158 Benchmark]: Toolchain (without parser) took 755449.19ms. Allocated memory was 107.0MB in the beginning and 1.1GB in the end (delta: 1.0GB). Free memory was 62.3MB in the beginning and 1.0GB in the end (delta: -983.1MB). Peak memory consumption was 715.6MB. Max. memory is 16.1GB. [2022-11-16 11:09:09,750 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 107.0MB. Free memory is still 88.6MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 11:09:09,750 INFO L158 Benchmark]: CACSL2BoogieTranslator took 3683.44ms. Allocated memory was 107.0MB in the beginning and 144.7MB in the end (delta: 37.7MB). Free memory was 62.1MB in the beginning and 68.6MB in the end (delta: -6.5MB). Peak memory consumption was 51.4MB. Max. memory is 16.1GB. [2022-11-16 11:09:09,751 INFO L158 Benchmark]: Boogie Procedure Inliner took 231.07ms. Allocated memory is still 144.7MB. Free memory was 68.6MB in the beginning and 57.3MB in the end (delta: 11.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-16 11:09:09,751 INFO L158 Benchmark]: Boogie Preprocessor took 145.49ms. Allocated memory is still 144.7MB. Free memory was 57.3MB in the beginning and 92.4MB in the end (delta: -35.1MB). Peak memory consumption was 9.7MB. Max. memory is 16.1GB. [2022-11-16 11:09:09,751 INFO L158 Benchmark]: RCFGBuilder took 2278.48ms. Allocated memory was 144.7MB in the beginning and 180.4MB in the end (delta: 35.7MB). Free memory was 92.4MB in the beginning and 75.1MB in the end (delta: 17.3MB). Peak memory consumption was 56.9MB. Max. memory is 16.1GB. [2022-11-16 11:09:09,751 INFO L158 Benchmark]: TraceAbstraction took 748358.12ms. Allocated memory was 180.4MB in the beginning and 1.1GB in the end (delta: 952.1MB). Free memory was 75.1MB in the beginning and 490.4MB in the end (delta: -415.3MB). Peak memory consumption was 546.1MB. Max. memory is 16.1GB. [2022-11-16 11:09:09,752 INFO L158 Benchmark]: Witness Printer took 738.29ms. Allocated memory is still 1.1GB. Free memory was 489.4MB in the beginning and 1.0GB in the end (delta: -556.1MB). Peak memory consumption was 117.4MB. Max. memory is 16.1GB. [2022-11-16 11:09:09,753 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 107.0MB. Free memory is still 88.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 3683.44ms. Allocated memory was 107.0MB in the beginning and 144.7MB in the end (delta: 37.7MB). Free memory was 62.1MB in the beginning and 68.6MB in the end (delta: -6.5MB). Peak memory consumption was 51.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 231.07ms. Allocated memory is still 144.7MB. Free memory was 68.6MB in the beginning and 57.3MB in the end (delta: 11.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Preprocessor took 145.49ms. Allocated memory is still 144.7MB. Free memory was 57.3MB in the beginning and 92.4MB in the end (delta: -35.1MB). Peak memory consumption was 9.7MB. Max. memory is 16.1GB. * RCFGBuilder took 2278.48ms. Allocated memory was 144.7MB in the beginning and 180.4MB in the end (delta: 35.7MB). Free memory was 92.4MB in the beginning and 75.1MB in the end (delta: 17.3MB). Peak memory consumption was 56.9MB. Max. memory is 16.1GB. * TraceAbstraction took 748358.12ms. Allocated memory was 180.4MB in the beginning and 1.1GB in the end (delta: 952.1MB). Free memory was 75.1MB in the beginning and 490.4MB in the end (delta: -415.3MB). Peak memory consumption was 546.1MB. Max. memory is 16.1GB. * Witness Printer took 738.29ms. Allocated memory is still 1.1GB. Free memory was 489.4MB in the beginning and 1.0GB in the end (delta: -556.1MB). Peak memory consumption was 117.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 223]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 11 procedures, 119 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 748.2s, OverallIterations: 42, TraceHistogramMax: 7, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.1s, AutomataDifference: 410.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 34.9s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 7084 SdHoareTripleChecker+Valid, 50.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 6799 mSDsluCounter, 24972 SdHoareTripleChecker+Invalid, 44.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 10974 IncrementalHoareTripleChecker+Unchecked, 21381 mSDsCounter, 2952 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 45343 IncrementalHoareTripleChecker+Invalid, 59269 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2952 mSolverCounterUnsat, 3591 mSDtfsCounter, 45343 mSolverCounterSat, 0.6s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 7214 GetRequests, 5950 SyntacticMatches, 79 SemanticMatches, 1185 ConstructedPredicates, 19 IntricatePredicates, 0 DeprecatedPredicates, 12734 ImplicationChecksByTransitivity, 538.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=412occurred in iteration=26, InterpolantAutomatonStates: 719, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.5s AutomataMinimizationTime, 42 MinimizatonAttempts, 569 StatesRemovedByMinimization, 34 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 41 LocationsWithAnnotation, 863 PreInvPairs, 948 NumberOfFragments, 1993 HoareAnnotationTreeSize, 863 FomulaSimplifications, 490 FormulaSimplificationTreeSizeReduction, 0.9s HoareSimplificationTime, 41 FomulaSimplificationsInter, 48405 FormulaSimplificationTreeSizeReductionInter, 34.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 1.7s SsaConstructionTime, 21.1s SatisfiabilityAnalysisTime, 265.9s InterpolantComputationTime, 9394 NumberOfCodeBlocks, 9148 NumberOfCodeBlocksAsserted, 78 NumberOfCheckSat, 10842 ConstructedInterpolants, 508 QuantifiedInterpolants, 40075 SizeOfPredicates, 341 NumberOfNonLiveVariables, 68724 ConjunctsInSsa, 987 ConjunctsInUnsatCore, 78 InterpolantComputations, 30 PerfectInterpolantSequences, 12140/13658 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 8785]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 7117]: Loop Invariant Derived loop invariant: (((0 < n % 18446744073709551616 || \old(n) % 18446744073709551616 <= 0) && sp == s) && unknown-#memory_int-unknown == \old(unknown-#memory_int-unknown)[sp := unknown-#memory_int-unknown[sp]]) || !(0 < unknown-#StackHeapBarrier-unknown) - InvariantResult [Line: 6598]: Loop Invariant Derived loop invariant: (((buf == 0 && 0 <= \result) && \valid[buf] == 1) && unknown-#StackHeapBarrier-unknown < buf) && 0 < unknown-#StackHeapBarrier-unknown RESULT: Ultimate proved your program to be correct! [2022-11-16 11:09:09,846 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a357e79c-3ed0-4232-b8ad-4e429590df33/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE