./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_string_new_from_string_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9b5932f-850a-4cba-9202-351ce274b5ee/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9b5932f-850a-4cba-9202-351ce274b5ee/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9b5932f-850a-4cba-9202-351ce274b5ee/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9b5932f-850a-4cba-9202-351ce274b5ee/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_string_new_from_string_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9b5932f-850a-4cba-9202-351ce274b5ee/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9b5932f-850a-4cba-9202-351ce274b5ee/bin/uautomizer-DrprNOufMa --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 618de5120235c3340e11b4958ef07a29ea7e443f67840fe760124caab804e862 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 18:17:08,271 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 18:17:08,273 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 18:17:08,303 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 18:17:08,303 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 18:17:08,305 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 18:17:08,306 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 18:17:08,308 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 18:17:08,310 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 18:17:08,311 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 18:17:08,313 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 18:17:08,314 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 18:17:08,314 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 18:17:08,316 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 18:17:08,317 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 18:17:08,318 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 18:17:08,319 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 18:17:08,320 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 18:17:08,322 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 18:17:08,325 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 18:17:08,326 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 18:17:08,328 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 18:17:08,329 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 18:17:08,330 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 18:17:08,334 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 18:17:08,334 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 18:17:08,334 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 18:17:08,335 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 18:17:08,336 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 18:17:08,337 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 18:17:08,337 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 18:17:08,338 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 18:17:08,339 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 18:17:08,340 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 18:17:08,341 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 18:17:08,341 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 18:17:08,342 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 18:17:08,342 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 18:17:08,342 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 18:17:08,343 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 18:17:08,344 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 18:17:08,345 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9b5932f-850a-4cba-9202-351ce274b5ee/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-06 18:17:08,369 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 18:17:08,369 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 18:17:08,369 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 18:17:08,369 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 18:17:08,370 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 18:17:08,370 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 18:17:08,371 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 18:17:08,371 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 18:17:08,371 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 18:17:08,372 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 18:17:08,372 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 18:17:08,372 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 18:17:08,372 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 18:17:08,372 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 18:17:08,372 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 18:17:08,373 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 18:17:08,373 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 18:17:08,373 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 18:17:08,373 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 18:17:08,373 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 18:17:08,373 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 18:17:08,374 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 18:17:08,374 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 18:17:08,374 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 18:17:08,374 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 18:17:08,374 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 18:17:08,375 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 18:17:08,375 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 18:17:08,375 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 18:17:08,375 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 18:17:08,375 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 18:17:08,375 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_b9b5932f-850a-4cba-9202-351ce274b5ee/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9b5932f-850a-4cba-9202-351ce274b5ee/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 618de5120235c3340e11b4958ef07a29ea7e443f67840fe760124caab804e862 [2021-12-06 18:17:08,569 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 18:17:08,586 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 18:17:08,588 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 18:17:08,589 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 18:17:08,590 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 18:17:08,591 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9b5932f-850a-4cba-9202-351ce274b5ee/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/aws-c-common/aws_string_new_from_string_harness.i [2021-12-06 18:17:08,632 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9b5932f-850a-4cba-9202-351ce274b5ee/bin/uautomizer-DrprNOufMa/data/dd8f9f1f4/7b68e41070e0442dae1455864f78c2cc/FLAGbcdaec9df [2021-12-06 18:17:09,196 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 18:17:09,196 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9b5932f-850a-4cba-9202-351ce274b5ee/sv-benchmarks/c/aws-c-common/aws_string_new_from_string_harness.i [2021-12-06 18:17:09,218 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9b5932f-850a-4cba-9202-351ce274b5ee/bin/uautomizer-DrprNOufMa/data/dd8f9f1f4/7b68e41070e0442dae1455864f78c2cc/FLAGbcdaec9df [2021-12-06 18:17:09,616 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9b5932f-850a-4cba-9202-351ce274b5ee/bin/uautomizer-DrprNOufMa/data/dd8f9f1f4/7b68e41070e0442dae1455864f78c2cc [2021-12-06 18:17:09,618 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 18:17:09,619 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 18:17:09,620 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 18:17:09,620 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 18:17:09,623 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 18:17:09,623 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 06:17:09" (1/1) ... [2021-12-06 18:17:09,624 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62cbd6cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:17:09, skipping insertion in model container [2021-12-06 18:17:09,624 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 06:17:09" (1/1) ... [2021-12-06 18:17:09,629 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 18:17:09,714 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 18:17:09,915 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9b5932f-850a-4cba-9202-351ce274b5ee/sv-benchmarks/c/aws-c-common/aws_string_new_from_string_harness.i[4500,4513] [2021-12-06 18:17:09,920 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9b5932f-850a-4cba-9202-351ce274b5ee/sv-benchmarks/c/aws-c-common/aws_string_new_from_string_harness.i[4560,4573] [2021-12-06 18:17:10,609 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 18:17:10,610 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 18:17:10,611 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 18:17:10,611 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 18:17:10,613 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 18:17:10,627 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 18:17:10,627 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 18:17:10,629 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 18:17:10,630 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 18:17:10,950 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-06 18:17:10,951 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-06 18:17:10,952 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-06 18:17:10,952 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-06 18:17:10,953 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-06 18:17:10,954 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-06 18:17:10,954 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-06 18:17:10,955 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-06 18:17:10,955 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-06 18:17:10,956 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-06 18:17:11,085 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-06 18:17:11,155 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 18:17:11,156 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 18:17:11,228 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 18:17:11,262 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 18:17:11,272 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9b5932f-850a-4cba-9202-351ce274b5ee/sv-benchmarks/c/aws-c-common/aws_string_new_from_string_harness.i[4500,4513] [2021-12-06 18:17:11,273 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9b5932f-850a-4cba-9202-351ce274b5ee/sv-benchmarks/c/aws-c-common/aws_string_new_from_string_harness.i[4560,4573] [2021-12-06 18:17:11,299 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 18:17:11,299 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 18:17:11,299 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 18:17:11,300 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 18:17:11,300 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 18:17:11,304 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 18:17:11,305 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 18:17:11,305 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 18:17:11,306 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 18:17:11,329 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-06 18:17:11,330 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-06 18:17:11,331 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-06 18:17:11,331 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-06 18:17:11,332 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-06 18:17:11,332 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-06 18:17:11,332 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-06 18:17:11,333 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-06 18:17:11,333 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-06 18:17:11,333 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-06 18:17:11,348 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-06 18:17:11,386 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 18:17:11,386 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 18:17:11,410 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 18:17:11,574 INFO L208 MainTranslator]: Completed translation [2021-12-06 18:17:11,574 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:17:11 WrapperNode [2021-12-06 18:17:11,574 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 18:17:11,575 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 18:17:11,575 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 18:17:11,575 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 18:17:11,580 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:17:11" (1/1) ... [2021-12-06 18:17:11,640 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:17:11" (1/1) ... [2021-12-06 18:17:11,710 INFO L137 Inliner]: procedures = 690, calls = 2740, calls flagged for inlining = 59, calls inlined = 9, statements flattened = 831 [2021-12-06 18:17:11,710 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 18:17:11,711 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 18:17:11,711 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 18:17:11,711 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 18:17:11,717 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:17:11" (1/1) ... [2021-12-06 18:17:11,718 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:17:11" (1/1) ... [2021-12-06 18:17:11,723 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:17:11" (1/1) ... [2021-12-06 18:17:11,723 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:17:11" (1/1) ... [2021-12-06 18:17:11,749 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:17:11" (1/1) ... [2021-12-06 18:17:11,753 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:17:11" (1/1) ... [2021-12-06 18:17:11,760 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:17:11" (1/1) ... [2021-12-06 18:17:11,770 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 18:17:11,770 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 18:17:11,770 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 18:17:11,771 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 18:17:11,771 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:17:11" (1/1) ... [2021-12-06 18:17:11,779 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 18:17:11,789 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9b5932f-850a-4cba-9202-351ce274b5ee/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:17:11,800 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9b5932f-850a-4cba-9202-351ce274b5ee/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 18:17:11,803 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9b5932f-850a-4cba-9202-351ce274b5ee/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 18:17:11,830 INFO L130 BoogieDeclarations]: Found specification of procedure aws_string_is_valid [2021-12-06 18:17:11,830 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_string_is_valid [2021-12-06 18:17:11,830 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-06 18:17:11,830 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-12-06 18:17:11,830 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-12-06 18:17:11,830 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real [2021-12-06 18:17:11,830 INFO L130 BoogieDeclarations]: Found specification of procedure aws_allocator_is_valid [2021-12-06 18:17:11,830 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_allocator_is_valid [2021-12-06 18:17:11,831 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-12-06 18:17:11,831 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-06 18:17:11,831 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-06 18:17:11,831 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-12-06 18:17:11,831 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-12-06 18:17:11,831 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2021-12-06 18:17:11,831 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2021-12-06 18:17:11,831 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-06 18:17:11,832 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-06 18:17:11,832 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-06 18:17:11,832 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 18:17:11,832 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-06 18:17:11,832 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 18:17:11,832 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 18:17:11,832 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-12-06 18:17:11,832 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-12-06 18:17:11,832 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-06 18:17:11,833 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-06 18:17:11,833 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2021-12-06 18:17:11,833 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2021-12-06 18:17:11,833 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-06 18:17:11,833 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-06 18:17:11,833 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_acquire [2021-12-06 18:17:11,833 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_acquire [2021-12-06 18:17:11,833 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-06 18:17:11,833 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2021-12-06 18:17:11,834 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2021-12-06 18:17:11,834 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-06 18:17:11,834 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-06 18:17:11,834 INFO L130 BoogieDeclarations]: Found specification of procedure aws_string_new_from_array [2021-12-06 18:17:11,834 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_string_new_from_array [2021-12-06 18:17:11,834 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2021-12-06 18:17:11,834 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2021-12-06 18:17:11,834 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2021-12-06 18:17:11,834 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2021-12-06 18:17:11,834 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2021-12-06 18:17:11,835 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2021-12-06 18:17:11,835 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-06 18:17:11,835 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~real [2021-12-06 18:17:11,835 INFO L130 BoogieDeclarations]: Found specification of procedure aws_string_new_from_string [2021-12-06 18:17:11,835 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_string_new_from_string [2021-12-06 18:17:11,835 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 18:17:12,017 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 18:17:12,019 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 18:17:12,153 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume !true; [2021-12-06 18:17:13,031 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 18:17:13,036 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 18:17:13,036 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-06 18:17:13,038 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 06:17:13 BoogieIcfgContainer [2021-12-06 18:17:13,038 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 18:17:13,039 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 18:17:13,039 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 18:17:13,042 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 18:17:13,042 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 06:17:09" (1/3) ... [2021-12-06 18:17:13,042 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8068509 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 06:17:13, skipping insertion in model container [2021-12-06 18:17:13,043 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:17:11" (2/3) ... [2021-12-06 18:17:13,043 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8068509 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 06:17:13, skipping insertion in model container [2021-12-06 18:17:13,043 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 06:17:13" (3/3) ... [2021-12-06 18:17:13,044 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_string_new_from_string_harness.i [2021-12-06 18:17:13,048 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 18:17:13,048 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-06 18:17:13,082 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 18:17:13,087 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-06 18:17:13,087 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-06 18:17:13,102 INFO L276 IsEmpty]: Start isEmpty. Operand has 153 states, 97 states have (on average 1.175257731958763) internal successors, (114), 97 states have internal predecessors, (114), 39 states have call successors, (39), 16 states have call predecessors, (39), 16 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2021-12-06 18:17:13,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-12-06 18:17:13,108 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:17:13,109 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:17:13,109 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:17:13,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:17:13,113 INFO L85 PathProgramCache]: Analyzing trace with hash -1670706302, now seen corresponding path program 1 times [2021-12-06 18:17:13,119 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:17:13,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429424405] [2021-12-06 18:17:13,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:17:13,121 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:17:13,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:13,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 18:17:13,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:13,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 18:17:13,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:13,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 18:17:13,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:13,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:17:13,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:13,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-06 18:17:13,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:13,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-06 18:17:13,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:13,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 18:17:13,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:13,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 18:17:13,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:13,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:17:13,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:13,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 18:17:13,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:13,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 18:17:13,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:13,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:17:13,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:13,630 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-12-06 18:17:13,630 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:17:13,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429424405] [2021-12-06 18:17:13,631 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429424405] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:17:13,631 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:17:13,631 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 18:17:13,632 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931511972] [2021-12-06 18:17:13,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:17:13,636 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 18:17:13,636 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:17:13,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 18:17:13,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-06 18:17:13,658 INFO L87 Difference]: Start difference. First operand has 153 states, 97 states have (on average 1.175257731958763) internal successors, (114), 97 states have internal predecessors, (114), 39 states have call successors, (39), 16 states have call predecessors, (39), 16 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (13), 4 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-06 18:17:14,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:17:14,048 INFO L93 Difference]: Finished difference Result 317 states and 419 transitions. [2021-12-06 18:17:14,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 18:17:14,050 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (13), 4 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 80 [2021-12-06 18:17:14,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:17:14,060 INFO L225 Difference]: With dead ends: 317 [2021-12-06 18:17:14,061 INFO L226 Difference]: Without dead ends: 164 [2021-12-06 18:17:14,064 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-06 18:17:14,067 INFO L933 BasicCegarLoop]: 169 mSDtfsCounter, 60 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 264 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 18:17:14,067 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [70 Valid, 264 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-06 18:17:14,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2021-12-06 18:17:14,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 147. [2021-12-06 18:17:14,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 91 states have (on average 1.164835164835165) internal successors, (106), 92 states have internal predecessors, (106), 39 states have call successors, (39), 16 states have call predecessors, (39), 16 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2021-12-06 18:17:14,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 183 transitions. [2021-12-06 18:17:14,108 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 183 transitions. Word has length 80 [2021-12-06 18:17:14,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:17:14,108 INFO L470 AbstractCegarLoop]: Abstraction has 147 states and 183 transitions. [2021-12-06 18:17:14,108 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (13), 4 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-06 18:17:14,109 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 183 transitions. [2021-12-06 18:17:14,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-12-06 18:17:14,112 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:17:14,112 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:17:14,112 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-06 18:17:14,112 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:17:14,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:17:14,113 INFO L85 PathProgramCache]: Analyzing trace with hash 2065694084, now seen corresponding path program 1 times [2021-12-06 18:17:14,113 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:17:14,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151233320] [2021-12-06 18:17:14,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:17:14,113 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:17:14,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:14,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 18:17:14,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:14,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 18:17:14,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:14,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 18:17:14,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:14,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:17:14,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:14,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-06 18:17:14,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:14,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-06 18:17:14,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:14,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 18:17:14,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:14,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 18:17:14,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:14,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:17:14,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:14,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 18:17:14,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:14,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 18:17:14,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:14,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:17:14,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:14,479 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-12-06 18:17:14,479 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:17:14,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151233320] [2021-12-06 18:17:14,479 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151233320] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:17:14,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1911661408] [2021-12-06 18:17:14,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:17:14,480 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:17:14,480 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9b5932f-850a-4cba-9202-351ce274b5ee/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:17:14,481 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9b5932f-850a-4cba-9202-351ce274b5ee/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:17:14,482 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9b5932f-850a-4cba-9202-351ce274b5ee/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-06 18:17:14,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:14,813 INFO L263 TraceCheckSpWp]: Trace formula consists of 2632 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-06 18:17:14,823 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:17:14,946 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-12-06 18:17:14,947 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:17:14,947 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1911661408] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:17:14,947 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 18:17:14,947 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2021-12-06 18:17:14,948 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816151695] [2021-12-06 18:17:14,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:17:14,949 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 18:17:14,949 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:17:14,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 18:17:14,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2021-12-06 18:17:14,950 INFO L87 Difference]: Start difference. First operand 147 states and 183 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 1 states have call successors, (12) [2021-12-06 18:17:14,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:17:14,989 INFO L93 Difference]: Finished difference Result 199 states and 246 transitions. [2021-12-06 18:17:14,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 18:17:14,990 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 1 states have call successors, (12) Word has length 80 [2021-12-06 18:17:14,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:17:14,992 INFO L225 Difference]: With dead ends: 199 [2021-12-06 18:17:14,992 INFO L226 Difference]: Without dead ends: 152 [2021-12-06 18:17:14,993 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2021-12-06 18:17:14,994 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 2 mSDsluCounter, 536 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 716 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:17:14,995 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 716 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:17:14,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2021-12-06 18:17:15,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 152. [2021-12-06 18:17:15,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 95 states have (on average 1.1578947368421053) internal successors, (110), 96 states have internal predecessors, (110), 39 states have call successors, (39), 16 states have call predecessors, (39), 17 states have return successors, (39), 39 states have call predecessors, (39), 38 states have call successors, (39) [2021-12-06 18:17:15,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 188 transitions. [2021-12-06 18:17:15,010 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 188 transitions. Word has length 80 [2021-12-06 18:17:15,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:17:15,010 INFO L470 AbstractCegarLoop]: Abstraction has 152 states and 188 transitions. [2021-12-06 18:17:15,010 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 1 states have call successors, (12) [2021-12-06 18:17:15,010 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 188 transitions. [2021-12-06 18:17:15,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-12-06 18:17:15,012 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:17:15,012 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:17:15,036 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9b5932f-850a-4cba-9202-351ce274b5ee/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-06 18:17:15,213 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9b5932f-850a-4cba-9202-351ce274b5ee/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:17:15,214 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:17:15,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:17:15,216 INFO L85 PathProgramCache]: Analyzing trace with hash -1742615278, now seen corresponding path program 1 times [2021-12-06 18:17:15,216 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:17:15,217 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145542522] [2021-12-06 18:17:15,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:17:15,218 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:17:15,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:15,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 18:17:15,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:15,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 18:17:15,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:15,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 18:17:15,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:15,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:17:15,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:15,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-06 18:17:15,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:15,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-06 18:17:15,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:15,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 18:17:15,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:15,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 18:17:15,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:15,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:17:15,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:15,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 18:17:15,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:15,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 18:17:15,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:15,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:17:15,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:15,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 18:17:15,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:15,674 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-12-06 18:17:15,675 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:17:15,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145542522] [2021-12-06 18:17:15,675 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145542522] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:17:15,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [65282606] [2021-12-06 18:17:15,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:17:15,676 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:17:15,676 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9b5932f-850a-4cba-9202-351ce274b5ee/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:17:15,677 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9b5932f-850a-4cba-9202-351ce274b5ee/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:17:15,677 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9b5932f-850a-4cba-9202-351ce274b5ee/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-06 18:17:15,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:15,982 INFO L263 TraceCheckSpWp]: Trace formula consists of 2636 conjuncts, 27 conjunts are in the unsatisfiable core [2021-12-06 18:17:15,988 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:17:16,055 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 17 [2021-12-06 18:17:16,059 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-12-06 18:17:16,185 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-12-06 18:17:16,185 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:17:16,185 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [65282606] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:17:16,185 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 18:17:16,185 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 13 [2021-12-06 18:17:16,186 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424507020] [2021-12-06 18:17:16,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:17:16,186 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 18:17:16,186 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:17:16,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 18:17:16,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2021-12-06 18:17:16,187 INFO L87 Difference]: Start difference. First operand 152 states and 188 transitions. Second operand has 7 states, 6 states have (on average 7.833333333333333) internal successors, (47), 7 states have internal predecessors, (47), 4 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2021-12-06 18:17:16,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:17:16,396 INFO L93 Difference]: Finished difference Result 224 states and 286 transitions. [2021-12-06 18:17:16,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 18:17:16,397 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 7.833333333333333) internal successors, (47), 7 states have internal predecessors, (47), 4 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 86 [2021-12-06 18:17:16,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:17:16,400 INFO L225 Difference]: With dead ends: 224 [2021-12-06 18:17:16,400 INFO L226 Difference]: Without dead ends: 182 [2021-12-06 18:17:16,401 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2021-12-06 18:17:16,402 INFO L933 BasicCegarLoop]: 199 mSDtfsCounter, 18 mSDsluCounter, 947 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 1146 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 18:17:16,403 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 1146 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 18:17:16,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2021-12-06 18:17:16,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 160. [2021-12-06 18:17:16,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 99 states have (on average 1.1515151515151516) internal successors, (114), 102 states have internal predecessors, (114), 42 states have call successors, (42), 16 states have call predecessors, (42), 18 states have return successors, (43), 41 states have call predecessors, (43), 41 states have call successors, (43) [2021-12-06 18:17:16,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 199 transitions. [2021-12-06 18:17:16,426 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 199 transitions. Word has length 86 [2021-12-06 18:17:16,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:17:16,427 INFO L470 AbstractCegarLoop]: Abstraction has 160 states and 199 transitions. [2021-12-06 18:17:16,427 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 7.833333333333333) internal successors, (47), 7 states have internal predecessors, (47), 4 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2021-12-06 18:17:16,427 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 199 transitions. [2021-12-06 18:17:16,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-12-06 18:17:16,430 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:17:16,430 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:17:16,466 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9b5932f-850a-4cba-9202-351ce274b5ee/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-06 18:17:16,630 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9b5932f-850a-4cba-9202-351ce274b5ee/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-12-06 18:17:16,631 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:17:16,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:17:16,631 INFO L85 PathProgramCache]: Analyzing trace with hash 1024935907, now seen corresponding path program 1 times [2021-12-06 18:17:16,631 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:17:16,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414625688] [2021-12-06 18:17:16,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:17:16,632 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:17:16,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:16,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 18:17:16,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:16,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 18:17:16,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:16,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 18:17:16,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:16,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:17:16,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:16,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-06 18:17:16,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:16,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-06 18:17:16,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:16,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 18:17:16,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:16,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 18:17:16,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:16,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 18:17:16,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:16,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:17:16,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:16,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 18:17:16,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:16,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 18:17:16,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:17,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:17:17,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:17,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 18:17:17,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:17,025 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-12-06 18:17:17,025 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:17:17,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414625688] [2021-12-06 18:17:17,026 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414625688] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:17:17,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [175461986] [2021-12-06 18:17:17,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:17:17,026 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:17:17,026 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9b5932f-850a-4cba-9202-351ce274b5ee/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:17:17,027 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9b5932f-850a-4cba-9202-351ce274b5ee/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:17:17,028 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9b5932f-850a-4cba-9202-351ce274b5ee/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-06 18:17:17,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:17,301 INFO L263 TraceCheckSpWp]: Trace formula consists of 2647 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-06 18:17:17,306 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:17:17,477 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-12-06 18:17:17,477 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 18:17:17,682 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-12-06 18:17:17,683 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [175461986] provided 1 perfect and 1 imperfect interpolant sequences [2021-12-06 18:17:17,683 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-12-06 18:17:17,683 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [13, 9] total 25 [2021-12-06 18:17:17,683 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222584024] [2021-12-06 18:17:17,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:17:17,684 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 18:17:17,684 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:17:17,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 18:17:17,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=533, Unknown=0, NotChecked=0, Total=600 [2021-12-06 18:17:17,684 INFO L87 Difference]: Start difference. First operand 160 states and 199 transitions. Second operand has 9 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 5 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 5 states have call predecessors, (14), 4 states have call successors, (14) [2021-12-06 18:17:17,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:17:17,883 INFO L93 Difference]: Finished difference Result 224 states and 285 transitions. [2021-12-06 18:17:17,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 18:17:17,884 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 5 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 5 states have call predecessors, (14), 4 states have call successors, (14) Word has length 91 [2021-12-06 18:17:17,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:17:17,885 INFO L225 Difference]: With dead ends: 224 [2021-12-06 18:17:17,886 INFO L226 Difference]: Without dead ends: 179 [2021-12-06 18:17:17,886 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=106, Invalid=824, Unknown=0, NotChecked=0, Total=930 [2021-12-06 18:17:17,887 INFO L933 BasicCegarLoop]: 192 mSDtfsCounter, 204 mSDsluCounter, 855 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 1047 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 18:17:17,887 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [207 Valid, 1047 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 18:17:17,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2021-12-06 18:17:17,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 155. [2021-12-06 18:17:17,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 96 states have (on average 1.15625) internal successors, (111), 98 states have internal predecessors, (111), 41 states have call successors, (41), 16 states have call predecessors, (41), 17 states have return successors, (40), 40 states have call predecessors, (40), 39 states have call successors, (40) [2021-12-06 18:17:17,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 192 transitions. [2021-12-06 18:17:17,900 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 192 transitions. Word has length 91 [2021-12-06 18:17:17,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:17:17,900 INFO L470 AbstractCegarLoop]: Abstraction has 155 states and 192 transitions. [2021-12-06 18:17:17,900 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 5 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 5 states have call predecessors, (14), 4 states have call successors, (14) [2021-12-06 18:17:17,900 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 192 transitions. [2021-12-06 18:17:17,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-12-06 18:17:17,902 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:17:17,902 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:17:17,925 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9b5932f-850a-4cba-9202-351ce274b5ee/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-12-06 18:17:18,102 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9b5932f-850a-4cba-9202-351ce274b5ee/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:17:18,103 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:17:18,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:17:18,104 INFO L85 PathProgramCache]: Analyzing trace with hash -305918410, now seen corresponding path program 1 times [2021-12-06 18:17:18,105 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:17:18,105 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784201688] [2021-12-06 18:17:18,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:17:18,105 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:17:18,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:18,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 18:17:18,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:18,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 18:17:18,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:18,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 18:17:18,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:18,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:17:18,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:18,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-06 18:17:18,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:18,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-06 18:17:18,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:18,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 18:17:18,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:18,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-06 18:17:18,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:18,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 18:17:18,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:18,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:17:18,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:18,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 18:17:18,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:18,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 18:17:18,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:18,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:17:18,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:18,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 18:17:18,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:18,440 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-12-06 18:17:18,440 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:17:18,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784201688] [2021-12-06 18:17:18,440 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784201688] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:17:18,440 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:17:18,440 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-06 18:17:18,440 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112502718] [2021-12-06 18:17:18,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:17:18,441 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 18:17:18,441 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:17:18,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 18:17:18,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-12-06 18:17:18,441 INFO L87 Difference]: Start difference. First operand 155 states and 192 transitions. Second operand has 10 states, 10 states have (on average 5.4) internal successors, (54), 5 states have internal predecessors, (54), 2 states have call successors, (15), 5 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 1 states have call successors, (14) [2021-12-06 18:17:19,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:17:19,200 INFO L93 Difference]: Finished difference Result 242 states and 303 transitions. [2021-12-06 18:17:19,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-06 18:17:19,200 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.4) internal successors, (54), 5 states have internal predecessors, (54), 2 states have call successors, (15), 5 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 1 states have call successors, (14) Word has length 95 [2021-12-06 18:17:19,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:17:19,202 INFO L225 Difference]: With dead ends: 242 [2021-12-06 18:17:19,202 INFO L226 Difference]: Without dead ends: 202 [2021-12-06 18:17:19,202 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2021-12-06 18:17:19,203 INFO L933 BasicCegarLoop]: 167 mSDtfsCounter, 92 mSDsluCounter, 714 mSDsCounter, 0 mSdLazyCounter, 592 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 881 SdHoareTripleChecker+Invalid, 659 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 592 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-06 18:17:19,203 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [107 Valid, 881 Invalid, 659 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 592 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-06 18:17:19,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2021-12-06 18:17:19,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 162. [2021-12-06 18:17:19,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 101 states have (on average 1.1485148514851484) internal successors, (116), 103 states have internal predecessors, (116), 41 states have call successors, (41), 16 states have call predecessors, (41), 19 states have return successors, (42), 42 states have call predecessors, (42), 39 states have call successors, (42) [2021-12-06 18:17:19,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 199 transitions. [2021-12-06 18:17:19,215 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 199 transitions. Word has length 95 [2021-12-06 18:17:19,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:17:19,215 INFO L470 AbstractCegarLoop]: Abstraction has 162 states and 199 transitions. [2021-12-06 18:17:19,215 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.4) internal successors, (54), 5 states have internal predecessors, (54), 2 states have call successors, (15), 5 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 1 states have call successors, (14) [2021-12-06 18:17:19,215 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 199 transitions. [2021-12-06 18:17:19,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-12-06 18:17:19,216 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:17:19,217 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:17:19,217 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-06 18:17:19,217 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:17:19,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:17:19,217 INFO L85 PathProgramCache]: Analyzing trace with hash -1965360267, now seen corresponding path program 1 times [2021-12-06 18:17:19,217 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:17:19,217 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760508870] [2021-12-06 18:17:19,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:17:19,218 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:17:19,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:19,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 18:17:19,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:19,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 18:17:19,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:19,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 18:17:19,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:19,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:17:19,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:19,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-06 18:17:19,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:19,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-06 18:17:19,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:19,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 18:17:19,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:19,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-06 18:17:19,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:19,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 18:17:19,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:19,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:17:19,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:19,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 18:17:19,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:19,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 18:17:19,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:19,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:17:19,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:19,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 18:17:19,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:19,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-06 18:17:19,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:19,721 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-12-06 18:17:19,721 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:17:19,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760508870] [2021-12-06 18:17:19,721 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760508870] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:17:19,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [264173129] [2021-12-06 18:17:19,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:17:19,721 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:17:19,722 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9b5932f-850a-4cba-9202-351ce274b5ee/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:17:19,722 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9b5932f-850a-4cba-9202-351ce274b5ee/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:17:19,723 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9b5932f-850a-4cba-9202-351ce274b5ee/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-06 18:17:20,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:20,036 INFO L263 TraceCheckSpWp]: Trace formula consists of 2690 conjuncts, 104 conjunts are in the unsatisfiable core [2021-12-06 18:17:20,042 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:17:20,142 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 6 treesize of output 5 [2021-12-06 18:17:22,294 INFO L354 Elim1Store]: treesize reduction 120, result has 21.6 percent of original size [2021-12-06 18:17:22,295 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 2 disjoint index pairs (out of 15 index pairs), introduced 10 new quantified variables, introduced 15 case distinctions, treesize of input 176 treesize of output 140 [2021-12-06 18:17:22,543 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 22 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-12-06 18:17:22,543 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 18:17:25,753 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [264173129] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:17:25,753 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 18:17:25,753 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 30] total 42 [2021-12-06 18:17:25,753 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302210178] [2021-12-06 18:17:25,753 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 18:17:25,754 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2021-12-06 18:17:25,754 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:17:25,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2021-12-06 18:17:25,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=2404, Unknown=0, NotChecked=0, Total=2550 [2021-12-06 18:17:25,755 INFO L87 Difference]: Start difference. First operand 162 states and 199 transitions. Second operand has 42 states, 38 states have (on average 2.8157894736842106) internal successors, (107), 32 states have internal predecessors, (107), 13 states have call successors, (31), 8 states have call predecessors, (31), 8 states have return successors, (29), 14 states have call predecessors, (29), 12 states have call successors, (29) [2021-12-06 18:17:30,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:17:30,707 INFO L93 Difference]: Finished difference Result 386 states and 488 transitions. [2021-12-06 18:17:30,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-12-06 18:17:30,708 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 38 states have (on average 2.8157894736842106) internal successors, (107), 32 states have internal predecessors, (107), 13 states have call successors, (31), 8 states have call predecessors, (31), 8 states have return successors, (29), 14 states have call predecessors, (29), 12 states have call successors, (29) Word has length 103 [2021-12-06 18:17:30,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:17:30,710 INFO L225 Difference]: With dead ends: 386 [2021-12-06 18:17:30,710 INFO L226 Difference]: Without dead ends: 235 [2021-12-06 18:17:30,712 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 123 SyntacticMatches, 1 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1510 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=659, Invalid=7351, Unknown=0, NotChecked=0, Total=8010 [2021-12-06 18:17:30,713 INFO L933 BasicCegarLoop]: 166 mSDtfsCounter, 462 mSDsluCounter, 2695 mSDsCounter, 0 mSdLazyCounter, 3042 mSolverCounterSat, 390 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 478 SdHoareTripleChecker+Valid, 2861 SdHoareTripleChecker+Invalid, 4003 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 390 IncrementalHoareTripleChecker+Valid, 3042 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 571 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2021-12-06 18:17:30,713 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [478 Valid, 2861 Invalid, 4003 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [390 Valid, 3042 Invalid, 0 Unknown, 571 Unchecked, 2.6s Time] [2021-12-06 18:17:30,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2021-12-06 18:17:30,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 189. [2021-12-06 18:17:30,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 121 states have (on average 1.140495867768595) internal successors, (138), 124 states have internal predecessors, (138), 45 states have call successors, (45), 17 states have call predecessors, (45), 22 states have return successors, (55), 47 states have call predecessors, (55), 43 states have call successors, (55) [2021-12-06 18:17:30,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 238 transitions. [2021-12-06 18:17:30,734 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 238 transitions. Word has length 103 [2021-12-06 18:17:30,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:17:30,735 INFO L470 AbstractCegarLoop]: Abstraction has 189 states and 238 transitions. [2021-12-06 18:17:30,735 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 38 states have (on average 2.8157894736842106) internal successors, (107), 32 states have internal predecessors, (107), 13 states have call successors, (31), 8 states have call predecessors, (31), 8 states have return successors, (29), 14 states have call predecessors, (29), 12 states have call successors, (29) [2021-12-06 18:17:30,735 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 238 transitions. [2021-12-06 18:17:30,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-12-06 18:17:30,737 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:17:30,737 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 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] [2021-12-06 18:17:30,762 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9b5932f-850a-4cba-9202-351ce274b5ee/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-06 18:17:30,938 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9b5932f-850a-4cba-9202-351ce274b5ee/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:17:30,939 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:17:30,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:17:30,940 INFO L85 PathProgramCache]: Analyzing trace with hash -1624983934, now seen corresponding path program 1 times [2021-12-06 18:17:30,941 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:17:30,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132057805] [2021-12-06 18:17:30,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:17:30,942 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:17:31,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:31,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 18:17:31,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:31,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 18:17:31,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:31,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 18:17:31,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:31,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:17:31,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:31,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-06 18:17:31,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:31,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-06 18:17:31,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:31,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 18:17:31,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:31,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 18:17:31,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:31,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-06 18:17:31,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:31,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 18:17:31,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:31,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:17:31,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:31,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 18:17:31,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:31,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 18:17:31,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:31,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:17:31,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:31,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 18:17:31,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:31,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-06 18:17:31,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:31,351 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-12-06 18:17:31,351 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:17:31,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132057805] [2021-12-06 18:17:31,351 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132057805] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:17:31,351 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:17:31,351 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-12-06 18:17:31,352 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301817847] [2021-12-06 18:17:31,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:17:31,352 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-12-06 18:17:31,352 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:17:31,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-12-06 18:17:31,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2021-12-06 18:17:31,353 INFO L87 Difference]: Start difference. First operand 189 states and 238 transitions. Second operand has 16 states, 16 states have (on average 3.9375) internal successors, (63), 12 states have internal predecessors, (63), 4 states have call successors, (17), 5 states have call predecessors, (17), 3 states have return successors, (16), 5 states have call predecessors, (16), 3 states have call successors, (16) [2021-12-06 18:17:32,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:17:32,584 INFO L93 Difference]: Finished difference Result 239 states and 308 transitions. [2021-12-06 18:17:32,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-06 18:17:32,584 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.9375) internal successors, (63), 12 states have internal predecessors, (63), 4 states have call successors, (17), 5 states have call predecessors, (17), 3 states have return successors, (16), 5 states have call predecessors, (16), 3 states have call successors, (16) Word has length 108 [2021-12-06 18:17:32,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:17:32,586 INFO L225 Difference]: With dead ends: 239 [2021-12-06 18:17:32,586 INFO L226 Difference]: Without dead ends: 230 [2021-12-06 18:17:32,586 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=110, Invalid=540, Unknown=0, NotChecked=0, Total=650 [2021-12-06 18:17:32,587 INFO L933 BasicCegarLoop]: 156 mSDtfsCounter, 253 mSDsluCounter, 1032 mSDsCounter, 0 mSdLazyCounter, 1022 mSolverCounterSat, 173 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 268 SdHoareTripleChecker+Valid, 1188 SdHoareTripleChecker+Invalid, 1195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 173 IncrementalHoareTripleChecker+Valid, 1022 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-06 18:17:32,587 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [268 Valid, 1188 Invalid, 1195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [173 Valid, 1022 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-06 18:17:32,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2021-12-06 18:17:32,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 192. [2021-12-06 18:17:32,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 123 states have (on average 1.1382113821138211) internal successors, (140), 127 states have internal predecessors, (140), 45 states have call successors, (45), 17 states have call predecessors, (45), 23 states have return successors, (58), 47 states have call predecessors, (58), 43 states have call successors, (58) [2021-12-06 18:17:32,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 243 transitions. [2021-12-06 18:17:32,601 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 243 transitions. Word has length 108 [2021-12-06 18:17:32,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:17:32,602 INFO L470 AbstractCegarLoop]: Abstraction has 192 states and 243 transitions. [2021-12-06 18:17:32,602 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.9375) internal successors, (63), 12 states have internal predecessors, (63), 4 states have call successors, (17), 5 states have call predecessors, (17), 3 states have return successors, (16), 5 states have call predecessors, (16), 3 states have call successors, (16) [2021-12-06 18:17:32,602 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 243 transitions. [2021-12-06 18:17:32,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-12-06 18:17:32,603 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:17:32,603 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 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] [2021-12-06 18:17:32,603 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-06 18:17:32,603 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:17:32,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:17:32,604 INFO L85 PathProgramCache]: Analyzing trace with hash 1145937350, now seen corresponding path program 2 times [2021-12-06 18:17:32,604 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:17:32,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924167653] [2021-12-06 18:17:32,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:17:32,604 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:17:32,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:32,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 18:17:32,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:32,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 18:17:32,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:32,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 18:17:32,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:32,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:17:32,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:32,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-06 18:17:32,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:32,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-06 18:17:32,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:32,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 18:17:32,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:32,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 18:17:32,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:32,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-06 18:17:32,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:32,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 18:17:32,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:32,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:17:32,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:32,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 18:17:32,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:32,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 18:17:32,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:32,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:17:32,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:32,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 18:17:32,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:32,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-06 18:17:32,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:32,958 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-12-06 18:17:32,958 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:17:32,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924167653] [2021-12-06 18:17:32,958 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924167653] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:17:32,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1033704168] [2021-12-06 18:17:32,958 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 18:17:32,958 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:17:32,958 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9b5932f-850a-4cba-9202-351ce274b5ee/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:17:32,959 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9b5932f-850a-4cba-9202-351ce274b5ee/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:17:32,960 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9b5932f-850a-4cba-9202-351ce274b5ee/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-06 18:17:33,369 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 18:17:33,370 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 18:17:33,378 INFO L263 TraceCheckSpWp]: Trace formula consists of 2696 conjuncts, 24 conjunts are in the unsatisfiable core [2021-12-06 18:17:33,381 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:17:33,613 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-12-06 18:17:33,613 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:17:33,613 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1033704168] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:17:33,613 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 18:17:33,613 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [18] total 31 [2021-12-06 18:17:33,613 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511722962] [2021-12-06 18:17:33,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:17:33,614 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-06 18:17:33,614 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:17:33,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-06 18:17:33,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=865, Unknown=0, NotChecked=0, Total=930 [2021-12-06 18:17:33,615 INFO L87 Difference]: Start difference. First operand 192 states and 243 transitions. Second operand has 15 states, 15 states have (on average 4.2) internal successors, (63), 14 states have internal predecessors, (63), 6 states have call successors, (17), 2 states have call predecessors, (17), 5 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) [2021-12-06 18:17:33,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:17:33,871 INFO L93 Difference]: Finished difference Result 265 states and 337 transitions. [2021-12-06 18:17:33,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-06 18:17:33,872 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.2) internal successors, (63), 14 states have internal predecessors, (63), 6 states have call successors, (17), 2 states have call predecessors, (17), 5 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) Word has length 108 [2021-12-06 18:17:33,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:17:33,873 INFO L225 Difference]: With dead ends: 265 [2021-12-06 18:17:33,873 INFO L226 Difference]: Without dead ends: 189 [2021-12-06 18:17:33,874 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=115, Invalid=1367, Unknown=0, NotChecked=0, Total=1482 [2021-12-06 18:17:33,875 INFO L933 BasicCegarLoop]: 175 mSDtfsCounter, 113 mSDsluCounter, 2083 mSDsCounter, 0 mSdLazyCounter, 292 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 2258 SdHoareTripleChecker+Invalid, 359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 18:17:33,875 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [117 Valid, 2258 Invalid, 359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 292 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 18:17:33,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2021-12-06 18:17:33,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 176. [2021-12-06 18:17:33,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 113 states have (on average 1.1327433628318584) internal successors, (128), 115 states have internal predecessors, (128), 42 states have call successors, (42), 16 states have call predecessors, (42), 20 states have return successors, (46), 44 states have call predecessors, (46), 40 states have call successors, (46) [2021-12-06 18:17:33,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 216 transitions. [2021-12-06 18:17:33,887 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 216 transitions. Word has length 108 [2021-12-06 18:17:33,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:17:33,887 INFO L470 AbstractCegarLoop]: Abstraction has 176 states and 216 transitions. [2021-12-06 18:17:33,887 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.2) internal successors, (63), 14 states have internal predecessors, (63), 6 states have call successors, (17), 2 states have call predecessors, (17), 5 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) [2021-12-06 18:17:33,888 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 216 transitions. [2021-12-06 18:17:33,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-12-06 18:17:33,889 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:17:33,889 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:17:33,912 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9b5932f-850a-4cba-9202-351ce274b5ee/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-12-06 18:17:34,089 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9b5932f-850a-4cba-9202-351ce274b5ee/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:17:34,090 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:17:34,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:17:34,090 INFO L85 PathProgramCache]: Analyzing trace with hash 1796968396, now seen corresponding path program 1 times [2021-12-06 18:17:34,090 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:17:34,090 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984937680] [2021-12-06 18:17:34,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:17:34,090 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:17:34,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:34,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 18:17:34,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:34,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 18:17:34,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:34,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 18:17:34,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:34,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:17:34,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:34,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-06 18:17:34,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:34,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-06 18:17:34,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:34,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-06 18:17:34,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:34,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-06 18:17:34,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:34,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-06 18:17:34,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:34,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-06 18:17:34,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:34,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-06 18:17:34,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:34,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:17:34,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:34,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-06 18:17:34,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:34,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:17:34,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:34,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:17:34,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:34,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-06 18:17:34,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:34,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-06 18:17:34,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:34,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-06 18:17:34,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:34,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:17:34,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:34,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-06 18:17:34,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:34,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-06 18:17:34,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:34,374 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2021-12-06 18:17:34,375 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:17:34,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984937680] [2021-12-06 18:17:34,375 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984937680] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:17:34,375 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:17:34,375 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-06 18:17:34,375 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780662646] [2021-12-06 18:17:34,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:17:34,375 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 18:17:34,375 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:17:34,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 18:17:34,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-12-06 18:17:34,376 INFO L87 Difference]: Start difference. First operand 176 states and 216 transitions. Second operand has 10 states, 10 states have (on average 6.8) internal successors, (68), 5 states have internal predecessors, (68), 2 states have call successors, (24), 6 states have call predecessors, (24), 3 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-06 18:17:35,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:17:35,119 INFO L93 Difference]: Finished difference Result 269 states and 333 transitions. [2021-12-06 18:17:35,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-06 18:17:35,119 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.8) internal successors, (68), 5 states have internal predecessors, (68), 2 states have call successors, (24), 6 states have call predecessors, (24), 3 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) Word has length 141 [2021-12-06 18:17:35,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:17:35,121 INFO L225 Difference]: With dead ends: 269 [2021-12-06 18:17:35,121 INFO L226 Difference]: Without dead ends: 193 [2021-12-06 18:17:35,121 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=201, Unknown=0, NotChecked=0, Total=272 [2021-12-06 18:17:35,122 INFO L933 BasicCegarLoop]: 159 mSDtfsCounter, 130 mSDsluCounter, 594 mSDsCounter, 0 mSdLazyCounter, 499 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 753 SdHoareTripleChecker+Invalid, 610 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 499 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-06 18:17:35,122 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [143 Valid, 753 Invalid, 610 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 499 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-06 18:17:35,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2021-12-06 18:17:35,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 181. [2021-12-06 18:17:35,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 117 states have (on average 1.1282051282051282) internal successors, (132), 119 states have internal predecessors, (132), 42 states have call successors, (42), 16 states have call predecessors, (42), 21 states have return successors, (47), 45 states have call predecessors, (47), 40 states have call successors, (47) [2021-12-06 18:17:35,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 221 transitions. [2021-12-06 18:17:35,138 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 221 transitions. Word has length 141 [2021-12-06 18:17:35,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:17:35,139 INFO L470 AbstractCegarLoop]: Abstraction has 181 states and 221 transitions. [2021-12-06 18:17:35,139 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.8) internal successors, (68), 5 states have internal predecessors, (68), 2 states have call successors, (24), 6 states have call predecessors, (24), 3 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-06 18:17:35,139 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 221 transitions. [2021-12-06 18:17:35,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-12-06 18:17:35,141 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:17:35,142 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:17:35,142 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-06 18:17:35,142 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:17:35,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:17:35,142 INFO L85 PathProgramCache]: Analyzing trace with hash -303790865, now seen corresponding path program 1 times [2021-12-06 18:17:35,142 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:17:35,143 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234561102] [2021-12-06 18:17:35,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:17:35,143 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:17:35,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:35,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 18:17:35,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:35,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 18:17:35,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:35,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 18:17:35,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:35,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:17:35,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:35,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-06 18:17:35,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:35,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-06 18:17:35,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:35,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-06 18:17:35,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:35,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-06 18:17:35,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:35,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-06 18:17:35,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:35,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-06 18:17:35,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:35,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:17:35,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:35,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 18:17:35,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:35,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-06 18:17:35,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:35,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:17:35,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:35,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:17:35,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:35,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-06 18:17:35,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:35,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-06 18:17:35,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:35,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-06 18:17:35,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:35,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:17:35,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:35,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-06 18:17:35,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:35,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-12-06 18:17:35,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:35,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-06 18:17:35,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:35,435 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2021-12-06 18:17:35,435 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:17:35,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234561102] [2021-12-06 18:17:35,435 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234561102] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:17:35,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1211720316] [2021-12-06 18:17:35,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:17:35,435 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:17:35,435 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9b5932f-850a-4cba-9202-351ce274b5ee/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:17:35,436 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9b5932f-850a-4cba-9202-351ce274b5ee/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:17:35,437 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9b5932f-850a-4cba-9202-351ce274b5ee/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-06 18:17:35,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:35,761 INFO L263 TraceCheckSpWp]: Trace formula consists of 2862 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-06 18:17:35,764 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:17:35,881 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2021-12-06 18:17:35,881 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:17:35,881 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1211720316] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:17:35,881 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 18:17:35,881 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [14] total 19 [2021-12-06 18:17:35,881 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349201124] [2021-12-06 18:17:35,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:17:35,882 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 18:17:35,882 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:17:35,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 18:17:35,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2021-12-06 18:17:35,882 INFO L87 Difference]: Start difference. First operand 181 states and 221 transitions. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 6 states have internal predecessors, (82), 2 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (22), 4 states have call predecessors, (22), 2 states have call successors, (22) [2021-12-06 18:17:35,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:17:35,918 INFO L93 Difference]: Finished difference Result 289 states and 349 transitions. [2021-12-06 18:17:35,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 18:17:35,918 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 6 states have internal predecessors, (82), 2 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (22), 4 states have call predecessors, (22), 2 states have call successors, (22) Word has length 144 [2021-12-06 18:17:35,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:17:35,920 INFO L225 Difference]: With dead ends: 289 [2021-12-06 18:17:35,920 INFO L226 Difference]: Without dead ends: 171 [2021-12-06 18:17:35,921 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=330, Unknown=0, NotChecked=0, Total=380 [2021-12-06 18:17:35,921 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 2 mSDsluCounter, 902 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1085 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:17:35,922 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 1085 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:17:35,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2021-12-06 18:17:35,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2021-12-06 18:17:35,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 110 states have (on average 1.1272727272727272) internal successors, (124), 112 states have internal predecessors, (124), 40 states have call successors, (40), 16 states have call predecessors, (40), 20 states have return successors, (44), 42 states have call predecessors, (44), 38 states have call successors, (44) [2021-12-06 18:17:35,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 208 transitions. [2021-12-06 18:17:35,937 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 208 transitions. Word has length 144 [2021-12-06 18:17:35,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:17:35,938 INFO L470 AbstractCegarLoop]: Abstraction has 171 states and 208 transitions. [2021-12-06 18:17:35,938 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 6 states have internal predecessors, (82), 2 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (22), 4 states have call predecessors, (22), 2 states have call successors, (22) [2021-12-06 18:17:35,938 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 208 transitions. [2021-12-06 18:17:35,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-12-06 18:17:35,939 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:17:35,939 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:17:35,962 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9b5932f-850a-4cba-9202-351ce274b5ee/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-12-06 18:17:36,140 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9b5932f-850a-4cba-9202-351ce274b5ee/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-12-06 18:17:36,141 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:17:36,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:17:36,143 INFO L85 PathProgramCache]: Analyzing trace with hash -961872131, now seen corresponding path program 1 times [2021-12-06 18:17:36,143 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:17:36,143 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782991273] [2021-12-06 18:17:36,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:17:36,144 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:17:36,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:36,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 18:17:36,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:36,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 18:17:36,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:36,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 18:17:36,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:36,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:17:36,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:36,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-06 18:17:36,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:36,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-06 18:17:36,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:36,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-06 18:17:36,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:36,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-06 18:17:36,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:36,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-06 18:17:36,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:36,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-06 18:17:36,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:36,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:17:36,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:36,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-06 18:17:36,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:36,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:17:36,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:36,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:17:36,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:36,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-06 18:17:36,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:36,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-06 18:17:36,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:36,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-06 18:17:36,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:36,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:17:36,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:36,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-06 18:17:36,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:36,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-06 18:17:36,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:36,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-06 18:17:36,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:36,451 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2021-12-06 18:17:36,451 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:17:36,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782991273] [2021-12-06 18:17:36,451 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782991273] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:17:36,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2007098414] [2021-12-06 18:17:36,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:17:36,451 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:17:36,451 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9b5932f-850a-4cba-9202-351ce274b5ee/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:17:36,452 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9b5932f-850a-4cba-9202-351ce274b5ee/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:17:36,453 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9b5932f-850a-4cba-9202-351ce274b5ee/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-06 18:17:36,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:36,739 INFO L263 TraceCheckSpWp]: Trace formula consists of 2858 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-06 18:17:36,742 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:17:36,901 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2021-12-06 18:17:36,901 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:17:36,901 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2007098414] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:17:36,901 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 18:17:36,901 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [14] total 21 [2021-12-06 18:17:36,901 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824913084] [2021-12-06 18:17:36,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:17:36,902 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 18:17:36,902 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:17:36,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 18:17:36,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=366, Unknown=0, NotChecked=0, Total=420 [2021-12-06 18:17:36,902 INFO L87 Difference]: Start difference. First operand 171 states and 208 transitions. Second operand has 9 states, 8 states have (on average 9.75) internal successors, (78), 6 states have internal predecessors, (78), 3 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-06 18:17:37,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:17:37,114 INFO L93 Difference]: Finished difference Result 318 states and 386 transitions. [2021-12-06 18:17:37,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-06 18:17:37,115 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 9.75) internal successors, (78), 6 states have internal predecessors, (78), 3 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) Word has length 138 [2021-12-06 18:17:37,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:17:37,116 INFO L225 Difference]: With dead ends: 318 [2021-12-06 18:17:37,116 INFO L226 Difference]: Without dead ends: 214 [2021-12-06 18:17:37,117 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=91, Invalid=611, Unknown=0, NotChecked=0, Total=702 [2021-12-06 18:17:37,117 INFO L933 BasicCegarLoop]: 187 mSDtfsCounter, 187 mSDsluCounter, 1016 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 1203 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 18:17:37,117 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [190 Valid, 1203 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 18:17:37,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2021-12-06 18:17:37,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 186. [2021-12-06 18:17:37,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 119 states have (on average 1.1176470588235294) internal successors, (133), 122 states have internal predecessors, (133), 44 states have call successors, (44), 17 states have call predecessors, (44), 22 states have return successors, (51), 46 states have call predecessors, (51), 42 states have call successors, (51) [2021-12-06 18:17:37,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 228 transitions. [2021-12-06 18:17:37,130 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 228 transitions. Word has length 138 [2021-12-06 18:17:37,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:17:37,130 INFO L470 AbstractCegarLoop]: Abstraction has 186 states and 228 transitions. [2021-12-06 18:17:37,130 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 9.75) internal successors, (78), 6 states have internal predecessors, (78), 3 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-06 18:17:37,130 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 228 transitions. [2021-12-06 18:17:37,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-12-06 18:17:37,131 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:17:37,132 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:17:37,164 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9b5932f-850a-4cba-9202-351ce274b5ee/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-12-06 18:17:37,332 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9b5932f-850a-4cba-9202-351ce274b5ee/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:17:37,333 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:17:37,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:17:37,334 INFO L85 PathProgramCache]: Analyzing trace with hash 955386, now seen corresponding path program 1 times [2021-12-06 18:17:37,335 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:17:37,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837876307] [2021-12-06 18:17:37,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:17:37,336 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:17:37,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:37,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 18:17:37,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:37,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 18:17:37,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:37,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 18:17:37,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:37,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:17:37,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:37,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-06 18:17:37,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:37,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-06 18:17:37,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:37,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-06 18:17:37,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:37,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-06 18:17:37,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:37,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-06 18:17:37,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:37,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-06 18:17:37,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:37,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-06 18:17:37,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:37,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:17:37,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:37,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-06 18:17:37,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:37,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:17:37,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:37,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:17:37,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:37,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-06 18:17:37,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:37,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-06 18:17:37,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:37,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-06 18:17:37,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:37,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:17:37,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:37,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-06 18:17:37,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:37,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-06 18:17:37,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:37,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-12-06 18:17:37,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:37,601 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2021-12-06 18:17:37,601 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:17:37,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837876307] [2021-12-06 18:17:37,601 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837876307] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:17:37,601 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:17:37,601 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-06 18:17:37,602 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359733179] [2021-12-06 18:17:37,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:17:37,602 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-06 18:17:37,602 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:17:37,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-06 18:17:37,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-12-06 18:17:37,603 INFO L87 Difference]: Start difference. First operand 186 states and 228 transitions. Second operand has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 5 states have internal predecessors, (72), 3 states have call successors, (25), 7 states have call predecessors, (25), 2 states have return successors, (22), 4 states have call predecessors, (22), 3 states have call successors, (22) [2021-12-06 18:17:38,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:17:38,368 INFO L93 Difference]: Finished difference Result 273 states and 337 transitions. [2021-12-06 18:17:38,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-06 18:17:38,369 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 5 states have internal predecessors, (72), 3 states have call successors, (25), 7 states have call predecessors, (25), 2 states have return successors, (22), 4 states have call predecessors, (22), 3 states have call successors, (22) Word has length 147 [2021-12-06 18:17:38,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:17:38,370 INFO L225 Difference]: With dead ends: 273 [2021-12-06 18:17:38,370 INFO L226 Difference]: Without dead ends: 208 [2021-12-06 18:17:38,371 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=86, Invalid=294, Unknown=0, NotChecked=0, Total=380 [2021-12-06 18:17:38,371 INFO L933 BasicCegarLoop]: 156 mSDtfsCounter, 197 mSDsluCounter, 576 mSDsCounter, 0 mSdLazyCounter, 530 mSolverCounterSat, 163 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 732 SdHoareTripleChecker+Invalid, 693 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 163 IncrementalHoareTripleChecker+Valid, 530 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-06 18:17:38,371 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [211 Valid, 732 Invalid, 693 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [163 Valid, 530 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-06 18:17:38,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2021-12-06 18:17:38,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 191. [2021-12-06 18:17:38,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 123 states have (on average 1.113821138211382) internal successors, (137), 126 states have internal predecessors, (137), 44 states have call successors, (44), 17 states have call predecessors, (44), 23 states have return successors, (52), 47 states have call predecessors, (52), 42 states have call successors, (52) [2021-12-06 18:17:38,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 233 transitions. [2021-12-06 18:17:38,383 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 233 transitions. Word has length 147 [2021-12-06 18:17:38,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:17:38,384 INFO L470 AbstractCegarLoop]: Abstraction has 191 states and 233 transitions. [2021-12-06 18:17:38,384 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 5 states have internal predecessors, (72), 3 states have call successors, (25), 7 states have call predecessors, (25), 2 states have return successors, (22), 4 states have call predecessors, (22), 3 states have call successors, (22) [2021-12-06 18:17:38,384 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 233 transitions. [2021-12-06 18:17:38,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-12-06 18:17:38,385 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:17:38,385 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:17:38,385 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-06 18:17:38,385 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:17:38,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:17:38,385 INFO L85 PathProgramCache]: Analyzing trace with hash 250425753, now seen corresponding path program 1 times [2021-12-06 18:17:38,385 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:17:38,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423519674] [2021-12-06 18:17:38,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:17:38,386 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:17:38,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:38,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 18:17:38,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:38,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 18:17:38,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:38,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 18:17:38,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:38,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:17:38,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:38,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-06 18:17:38,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:38,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-06 18:17:38,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:38,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 18:17:38,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:38,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 18:17:38,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:38,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-06 18:17:38,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:38,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 18:17:38,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:38,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:17:38,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:38,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 18:17:38,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:38,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 18:17:38,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:38,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:17:38,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:38,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-06 18:17:38,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:38,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:17:38,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:38,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:17:38,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:38,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-06 18:17:38,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:38,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-06 18:17:38,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:38,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-06 18:17:38,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:38,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:17:38,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:38,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-06 18:17:38,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:38,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-12-06 18:17:38,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:38,842 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2021-12-06 18:17:38,842 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:17:38,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423519674] [2021-12-06 18:17:38,842 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423519674] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:17:38,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1774366375] [2021-12-06 18:17:38,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:17:38,843 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:17:38,843 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9b5932f-850a-4cba-9202-351ce274b5ee/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:17:38,843 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9b5932f-850a-4cba-9202-351ce274b5ee/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:17:38,844 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9b5932f-850a-4cba-9202-351ce274b5ee/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-06 18:17:39,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:39,168 INFO L263 TraceCheckSpWp]: Trace formula consists of 2842 conjuncts, 132 conjunts are in the unsatisfiable core [2021-12-06 18:17:39,173 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:17:39,191 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 6 treesize of output 5 [2021-12-06 18:17:39,358 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 6 treesize of output 5 [2021-12-06 18:17:40,492 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_1054 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |c_aws_add_size_checked_#in~r#1.base| v_ArrVal_1054))) is different from true [2021-12-06 18:17:40,559 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 18:17:40,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:17:40,761 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 64 [2021-12-06 18:17:40,768 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-06 18:17:40,768 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-12-06 18:17:41,694 INFO L354 Elim1Store]: treesize reduction 120, result has 21.6 percent of original size [2021-12-06 18:17:41,694 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 2 disjoint index pairs (out of 15 index pairs), introduced 10 new quantified variables, introduced 15 case distinctions, treesize of input 176 treesize of output 140 [2021-12-06 18:17:41,925 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 22 proven. 21 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2021-12-06 18:17:41,926 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 18:17:43,417 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1774366375] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:17:43,417 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 18:17:43,417 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 37] total 48 [2021-12-06 18:17:43,418 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281380316] [2021-12-06 18:17:43,418 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 18:17:43,418 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2021-12-06 18:17:43,418 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:17:43,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2021-12-06 18:17:43,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=2791, Unknown=17, NotChecked=106, Total=3080 [2021-12-06 18:17:43,420 INFO L87 Difference]: Start difference. First operand 191 states and 233 transitions. Second operand has 48 states, 41 states have (on average 3.2439024390243905) internal successors, (133), 33 states have internal predecessors, (133), 16 states have call successors, (43), 11 states have call predecessors, (43), 11 states have return successors, (39), 16 states have call predecessors, (39), 15 states have call successors, (39) [2021-12-06 18:17:43,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:17:43,835 INFO L93 Difference]: Finished difference Result 203 states and 243 transitions. [2021-12-06 18:17:43,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-06 18:17:43,836 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 41 states have (on average 3.2439024390243905) internal successors, (133), 33 states have internal predecessors, (133), 16 states have call successors, (43), 11 states have call predecessors, (43), 11 states have return successors, (39), 16 states have call predecessors, (39), 15 states have call successors, (39) Word has length 147 [2021-12-06 18:17:43,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:17:43,836 INFO L225 Difference]: With dead ends: 203 [2021-12-06 18:17:43,836 INFO L226 Difference]: Without dead ends: 0 [2021-12-06 18:17:43,838 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 159 SyntacticMatches, 4 SemanticMatches, 61 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 936 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=227, Invalid=3542, Unknown=17, NotChecked=120, Total=3906 [2021-12-06 18:17:43,838 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 39 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 359 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 359 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 77 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 18:17:43,838 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 158 Invalid, 466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 359 Invalid, 0 Unknown, 77 Unchecked, 0.2s Time] [2021-12-06 18:17:43,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-12-06 18:17:43,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-12-06 18:17:43,839 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) [2021-12-06 18:17:43,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-12-06 18:17:43,839 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 147 [2021-12-06 18:17:43,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:17:43,839 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-06 18:17:43,840 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 41 states have (on average 3.2439024390243905) internal successors, (133), 33 states have internal predecessors, (133), 16 states have call successors, (43), 11 states have call predecessors, (43), 11 states have return successors, (39), 16 states have call predecessors, (39), 15 states have call successors, (39) [2021-12-06 18:17:43,840 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-12-06 18:17:43,840 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-12-06 18:17:43,841 INFO L764 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-06 18:17:43,864 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9b5932f-850a-4cba-9202-351ce274b5ee/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2021-12-06 18:17:44,042 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9b5932f-850a-4cba-9202-351ce274b5ee/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:17:44,048 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-12-06 18:17:44,286 INFO L854 garLoopResultBuilder]: At program point bounded_mallocENTRY(lines 6882 6887) the Hoare annotation is: (or (not (<= 195 |~#s_can_fail_allocator_static~0.base|)) (and (= |old(#length)| |#length|) (= |old(#valid)| |#valid|))) [2021-12-06 18:17:44,286 INFO L858 garLoopResultBuilder]: For program point bounded_mallocFINAL(lines 6882 6887) no Hoare annotation was computed. [2021-12-06 18:17:44,286 INFO L858 garLoopResultBuilder]: For program point bounded_mallocEXIT(lines 6882 6887) no Hoare annotation was computed. [2021-12-06 18:17:44,286 INFO L858 garLoopResultBuilder]: For program point L6883-1(lines 6883 6885) no Hoare annotation was computed. [2021-12-06 18:17:44,286 INFO L854 garLoopResultBuilder]: At program point L6883(lines 6883 6885) the Hoare annotation is: (or (not (<= 195 |~#s_can_fail_allocator_static~0.base|)) (and (= |bounded_malloc_#in~size| bounded_malloc_~size) (= |old(#length)| |#length|) (= |old(#valid)| |#valid|))) [2021-12-06 18:17:44,286 INFO L861 garLoopResultBuilder]: At program point aws_mem_acquireENTRY(lines 6928 6938) the Hoare annotation is: true [2021-12-06 18:17:44,286 INFO L858 garLoopResultBuilder]: For program point L6934(lines 6934 6936) no Hoare annotation was computed. [2021-12-06 18:17:44,286 INFO L858 garLoopResultBuilder]: For program point L6935-1(line 6935) no Hoare annotation was computed. [2021-12-06 18:17:44,286 INFO L861 garLoopResultBuilder]: At program point L6935(line 6935) the Hoare annotation is: true [2021-12-06 18:17:44,286 INFO L858 garLoopResultBuilder]: For program point aws_mem_acquireEXIT(lines 6928 6938) no Hoare annotation was computed. [2021-12-06 18:17:44,287 INFO L861 garLoopResultBuilder]: At program point L6931-1(line 6931) the Hoare annotation is: true [2021-12-06 18:17:44,287 INFO L861 garLoopResultBuilder]: At program point L6931(line 6931) the Hoare annotation is: true [2021-12-06 18:17:44,287 INFO L858 garLoopResultBuilder]: For program point L6934-2(lines 6934 6936) no Hoare annotation was computed. [2021-12-06 18:17:44,287 INFO L858 garLoopResultBuilder]: For program point L6933(line 6933) no Hoare annotation was computed. [2021-12-06 18:17:44,287 INFO L858 garLoopResultBuilder]: For program point L6929-2(line 6929) no Hoare annotation was computed. [2021-12-06 18:17:44,287 INFO L861 garLoopResultBuilder]: At program point L6929-1(line 6929) the Hoare annotation is: true [2021-12-06 18:17:44,287 INFO L861 garLoopResultBuilder]: At program point L6929(line 6929) the Hoare annotation is: true [2021-12-06 18:17:44,287 INFO L858 garLoopResultBuilder]: For program point aws_mem_acquireFINAL(lines 6928 6938) no Hoare annotation was computed. [2021-12-06 18:17:44,287 INFO L858 garLoopResultBuilder]: For program point nondet_boolFINAL(line 261) no Hoare annotation was computed. [2021-12-06 18:17:44,287 INFO L858 garLoopResultBuilder]: For program point nondet_boolEXIT(line 261) no Hoare annotation was computed. [2021-12-06 18:17:44,287 INFO L861 garLoopResultBuilder]: At program point nondet_boolENTRY(line 261) the Hoare annotation is: true [2021-12-06 18:17:44,287 INFO L861 garLoopResultBuilder]: At program point aws_string_is_validENTRY(lines 6252 6257) the Hoare annotation is: true [2021-12-06 18:17:44,287 INFO L858 garLoopResultBuilder]: For program point L6256-2(line 6256) no Hoare annotation was computed. [2021-12-06 18:17:44,287 INFO L858 garLoopResultBuilder]: For program point L6256(line 6256) no Hoare annotation was computed. [2021-12-06 18:17:44,287 INFO L858 garLoopResultBuilder]: For program point L6256-5(line 6256) no Hoare annotation was computed. [2021-12-06 18:17:44,287 INFO L858 garLoopResultBuilder]: For program point aws_string_is_validFINAL(lines 6252 6257) no Hoare annotation was computed. [2021-12-06 18:17:44,288 INFO L858 garLoopResultBuilder]: For program point L6256-3(line 6256) no Hoare annotation was computed. [2021-12-06 18:17:44,288 INFO L858 garLoopResultBuilder]: For program point aws_string_is_validEXIT(lines 6252 6257) no Hoare annotation was computed. [2021-12-06 18:17:44,288 INFO L858 garLoopResultBuilder]: For program point aws_allocator_is_validFINAL(lines 6923 6926) no Hoare annotation was computed. [2021-12-06 18:17:44,288 INFO L858 garLoopResultBuilder]: For program point L6925-1(line 6925) no Hoare annotation was computed. [2021-12-06 18:17:44,288 INFO L861 garLoopResultBuilder]: At program point L6925(line 6925) the Hoare annotation is: true [2021-12-06 18:17:44,288 INFO L861 garLoopResultBuilder]: At program point aws_allocator_is_validENTRY(lines 6923 6926) the Hoare annotation is: true [2021-12-06 18:17:44,288 INFO L858 garLoopResultBuilder]: For program point aws_allocator_is_validEXIT(lines 6923 6926) no Hoare annotation was computed. [2021-12-06 18:17:44,288 INFO L858 garLoopResultBuilder]: For program point nondet_uint64_tEXIT(line 266) no Hoare annotation was computed. [2021-12-06 18:17:44,288 INFO L861 garLoopResultBuilder]: At program point nondet_uint64_tENTRY(line 266) the Hoare annotation is: true [2021-12-06 18:17:44,288 INFO L858 garLoopResultBuilder]: For program point nondet_uint64_tFINAL(line 266) no Hoare annotation was computed. [2021-12-06 18:17:44,288 INFO L861 garLoopResultBuilder]: At program point __CPROVER_overflow_plusENTRY(lines 248 251) the Hoare annotation is: true [2021-12-06 18:17:44,288 INFO L858 garLoopResultBuilder]: For program point __CPROVER_overflow_plusFINAL(lines 248 251) no Hoare annotation was computed. [2021-12-06 18:17:44,288 INFO L858 garLoopResultBuilder]: For program point __CPROVER_overflow_plusEXIT(lines 248 251) no Hoare annotation was computed. [2021-12-06 18:17:44,288 INFO L858 garLoopResultBuilder]: For program point L8989(line 8989) no Hoare annotation was computed. [2021-12-06 18:17:44,288 INFO L858 garLoopResultBuilder]: For program point L8990-1(line 8990) no Hoare annotation was computed. [2021-12-06 18:17:44,288 INFO L861 garLoopResultBuilder]: At program point L8989-1(line 8989) the Hoare annotation is: true [2021-12-06 18:17:44,288 INFO L858 garLoopResultBuilder]: For program point L8989-2(line 8989) no Hoare annotation was computed. [2021-12-06 18:17:44,289 INFO L861 garLoopResultBuilder]: At program point aws_string_new_from_stringENTRY(lines 8988 8991) the Hoare annotation is: true [2021-12-06 18:17:44,289 INFO L861 garLoopResultBuilder]: At program point L8990(line 8990) the Hoare annotation is: true [2021-12-06 18:17:44,289 INFO L861 garLoopResultBuilder]: At program point L8989-4(line 8989) the Hoare annotation is: true [2021-12-06 18:17:44,289 INFO L858 garLoopResultBuilder]: For program point L8989-5(line 8989) no Hoare annotation was computed. [2021-12-06 18:17:44,289 INFO L858 garLoopResultBuilder]: For program point aws_string_new_from_stringEXIT(lines 8988 8991) no Hoare annotation was computed. [2021-12-06 18:17:44,289 INFO L858 garLoopResultBuilder]: For program point aws_string_new_from_stringFINAL(lines 8988 8991) no Hoare annotation was computed. [2021-12-06 18:17:44,289 INFO L861 garLoopResultBuilder]: At program point can_fail_mallocENTRY(lines 6899 6903) the Hoare annotation is: true [2021-12-06 18:17:44,289 INFO L858 garLoopResultBuilder]: For program point L6900-3(lines 6900 6902) no Hoare annotation was computed. [2021-12-06 18:17:44,289 INFO L861 garLoopResultBuilder]: At program point L6902(line 6902) the Hoare annotation is: true [2021-12-06 18:17:44,289 INFO L858 garLoopResultBuilder]: For program point can_fail_mallocFINAL(lines 6899 6903) no Hoare annotation was computed. [2021-12-06 18:17:44,289 INFO L858 garLoopResultBuilder]: For program point L6900-1(lines 6900 6902) no Hoare annotation was computed. [2021-12-06 18:17:44,289 INFO L858 garLoopResultBuilder]: For program point can_fail_mallocEXIT(lines 6899 6903) no Hoare annotation was computed. [2021-12-06 18:17:44,289 INFO L861 garLoopResultBuilder]: At program point L6900(line 6900) the Hoare annotation is: true [2021-12-06 18:17:44,289 INFO L858 garLoopResultBuilder]: For program point L6902-1(line 6902) no Hoare annotation was computed. [2021-12-06 18:17:44,289 INFO L861 garLoopResultBuilder]: At program point aws_string_new_from_arrayENTRY(lines 8964 8986) the Hoare annotation is: true [2021-12-06 18:17:44,289 INFO L858 garLoopResultBuilder]: For program point L8985-4(line 8985) no Hoare annotation was computed. [2021-12-06 18:17:44,290 INFO L861 garLoopResultBuilder]: At program point L8985-1(line 8985) the Hoare annotation is: true [2021-12-06 18:17:44,290 INFO L861 garLoopResultBuilder]: At program point L8983(line 8983) the Hoare annotation is: true [2021-12-06 18:17:44,290 INFO L858 garLoopResultBuilder]: For program point L8985-2(line 8985) no Hoare annotation was computed. [2021-12-06 18:17:44,290 INFO L858 garLoopResultBuilder]: For program point L8983-1(line 8983) no Hoare annotation was computed. [2021-12-06 18:17:44,290 INFO L861 garLoopResultBuilder]: At program point L8985-3(line 8985) the Hoare annotation is: true [2021-12-06 18:17:44,290 INFO L861 garLoopResultBuilder]: At program point L8973(line 8973) the Hoare annotation is: true [2021-12-06 18:17:44,290 INFO L858 garLoopResultBuilder]: For program point L8973-1(line 8973) no Hoare annotation was computed. [2021-12-06 18:17:44,290 INFO L861 garLoopResultBuilder]: At program point L8965(line 8965) the Hoare annotation is: true [2021-12-06 18:17:44,290 INFO L858 garLoopResultBuilder]: For program point aws_string_new_from_arrayFINAL(lines 8964 8986) no Hoare annotation was computed. [2021-12-06 18:17:44,290 INFO L861 garLoopResultBuilder]: At program point L8965-1(line 8965) the Hoare annotation is: true [2021-12-06 18:17:44,290 INFO L858 garLoopResultBuilder]: For program point aws_string_new_from_arrayEXIT(lines 8964 8986) no Hoare annotation was computed. [2021-12-06 18:17:44,290 INFO L858 garLoopResultBuilder]: For program point L8974(lines 8974 8978) no Hoare annotation was computed. [2021-12-06 18:17:44,290 INFO L861 garLoopResultBuilder]: At program point L8968(line 8968) the Hoare annotation is: true [2021-12-06 18:17:44,290 INFO L858 garLoopResultBuilder]: For program point L8968-1(line 8968) no Hoare annotation was computed. [2021-12-06 18:17:44,290 INFO L858 garLoopResultBuilder]: For program point L8966(line 8966) no Hoare annotation was computed. [2021-12-06 18:17:44,290 INFO L858 garLoopResultBuilder]: For program point L8968-2(lines 8968 8972) no Hoare annotation was computed. [2021-12-06 18:17:44,290 INFO L861 garLoopResultBuilder]: At program point L-1-1(line -1) the Hoare annotation is: true [2021-12-06 18:17:44,291 INFO L861 garLoopResultBuilder]: At program point L-1-3(line -1) the Hoare annotation is: true [2021-12-06 18:17:44,291 INFO L858 garLoopResultBuilder]: For program point #Ultimate.C_memcpyFINAL(line -1) no Hoare annotation was computed. [2021-12-06 18:17:44,291 INFO L861 garLoopResultBuilder]: At program point #Ultimate.C_memcpyENTRY(line -1) the Hoare annotation is: true [2021-12-06 18:17:44,291 INFO L858 garLoopResultBuilder]: For program point #Ultimate.C_memcpyEXIT(line -1) no Hoare annotation was computed. [2021-12-06 18:17:44,291 INFO L858 garLoopResultBuilder]: For program point L211-2(lines 210 212) no Hoare annotation was computed. [2021-12-06 18:17:44,291 INFO L861 garLoopResultBuilder]: At program point assume_abort_if_notENTRY(lines 210 212) the Hoare annotation is: true [2021-12-06 18:17:44,291 INFO L858 garLoopResultBuilder]: For program point L211(line 211) no Hoare annotation was computed. [2021-12-06 18:17:44,291 INFO L858 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 210 212) no Hoare annotation was computed. [2021-12-06 18:17:44,291 INFO L854 garLoopResultBuilder]: At program point aws_raise_errorENTRY(lines 1988 1999) the Hoare annotation is: (or (not (< 0 |~#s_can_fail_allocator_static~0.base|)) (= ~tl_last_error~0 |old(~tl_last_error~0)|)) [2021-12-06 18:17:44,291 INFO L858 garLoopResultBuilder]: For program point aws_raise_errorFINAL(lines 1988 1999) no Hoare annotation was computed. [2021-12-06 18:17:44,291 INFO L858 garLoopResultBuilder]: For program point aws_raise_errorEXIT(lines 1988 1999) no Hoare annotation was computed. [2021-12-06 18:17:44,291 INFO L858 garLoopResultBuilder]: For program point L7317(lines 7317 7319) no Hoare annotation was computed. [2021-12-06 18:17:44,291 INFO L858 garLoopResultBuilder]: For program point can_fail_allocatorFINAL(lines 6889 6891) no Hoare annotation was computed. [2021-12-06 18:17:44,291 INFO L858 garLoopResultBuilder]: For program point can_fail_allocatorEXIT(lines 6889 6891) no Hoare annotation was computed. [2021-12-06 18:17:44,291 INFO L861 garLoopResultBuilder]: At program point can_fail_allocatorENTRY(lines 6889 6891) the Hoare annotation is: true [2021-12-06 18:17:44,291 INFO L861 garLoopResultBuilder]: At program point L2545(lines 2541 2546) the Hoare annotation is: true [2021-12-06 18:17:44,291 INFO L861 garLoopResultBuilder]: At program point aws_add_size_checkedENTRY(lines 2613 2621) the Hoare annotation is: true [2021-12-06 18:17:44,292 INFO L861 garLoopResultBuilder]: At program point L2542(line 2542) the Hoare annotation is: true [2021-12-06 18:17:44,292 INFO L858 garLoopResultBuilder]: For program point L2543-1(line 2543) no Hoare annotation was computed. [2021-12-06 18:17:44,292 INFO L861 garLoopResultBuilder]: At program point L2543(line 2543) the Hoare annotation is: true [2021-12-06 18:17:44,292 INFO L858 garLoopResultBuilder]: For program point L2542-1(lines 2542 2543) no Hoare annotation was computed. [2021-12-06 18:17:44,292 INFO L858 garLoopResultBuilder]: For program point aws_add_size_checkedFINAL(lines 2613 2621) no Hoare annotation was computed. [2021-12-06 18:17:44,292 INFO L858 garLoopResultBuilder]: For program point aws_add_size_checkedEXIT(lines 2613 2621) no Hoare annotation was computed. [2021-12-06 18:17:44,292 INFO L854 garLoopResultBuilder]: At program point L6815(lines 6806 6816) the Hoare annotation is: false [2021-12-06 18:17:44,292 INFO L858 garLoopResultBuilder]: For program point L9338(lines 9338 9344) no Hoare annotation was computed. [2021-12-06 18:17:44,292 INFO L858 garLoopResultBuilder]: For program point L7100-1(lines 7099 7112) no Hoare annotation was computed. [2021-12-06 18:17:44,292 INFO L854 garLoopResultBuilder]: At program point L7100(line 7100) the Hoare annotation is: false [2021-12-06 18:17:44,292 INFO L858 garLoopResultBuilder]: For program point L6807-1(line 6807) no Hoare annotation was computed. [2021-12-06 18:17:44,292 INFO L854 garLoopResultBuilder]: At program point L6807(line 6807) the Hoare annotation is: (and (<= 195 |~#s_can_fail_allocator_static~0.base|) (<= |ULTIMATE.start_ensure_string_is_allocated_bounded_length_~max_size#1| 18446744073710786165) (<= 18446744073709551616 (+ (* 18446744073709551616 (div (+ (* |ULTIMATE.start_ensure_string_is_allocated_~len#1| (- 1)) 18446744073710786164) 18446744073709551616)) |ULTIMATE.start_ensure_string_is_allocated_~len#1|)) (< 0 (div |ULTIMATE.start_ensure_string_is_allocated_bounded_length_~max_size#1| 18446744073709551616)) (let ((.cse0 (div |ULTIMATE.start_ensure_string_is_allocated_bounded_length_~len~1#1| 18446744073709551616))) (<= (+ (* 18446744073709551616 .cse0) 18446744073709551616) (+ |ULTIMATE.start_ensure_string_is_allocated_bounded_length_~len~1#1| (* 18446744073709551616 (div (+ (* |ULTIMATE.start_ensure_string_is_allocated_bounded_length_~len~1#1| (- 1)) 18446744073710786164 (* .cse0 18446744073709551616)) 18446744073709551616)))))) [2021-12-06 18:17:44,292 INFO L854 garLoopResultBuilder]: At program point L6803(lines 6800 6804) the Hoare annotation is: false [2021-12-06 18:17:44,292 INFO L854 garLoopResultBuilder]: At program point L9338-2(lines 9338 9344) the Hoare annotation is: (and (not (= |ULTIMATE.start_ensure_string_is_allocated_#res#1.base| 0)) (< 0 |~#s_can_fail_allocator_static~0.base|) (= |ULTIMATE.start_ensure_string_is_allocated_bounded_length_#res#1.offset| 0) (<= |ULTIMATE.start_ensure_string_is_allocated_bounded_length_~max_size#1| 18446744073710786165) (not (= |ULTIMATE.start_aws_string_new_from_string_harness_~source~0#1.base| 0)) (= |ULTIMATE.start_ensure_string_is_allocated_#res#1.offset| 0) (< 0 (div |ULTIMATE.start_ensure_string_is_allocated_bounded_length_~max_size#1| 18446744073709551616)) (not (= |ULTIMATE.start_ensure_string_is_allocated_~str~0#1.base| 0)) (let ((.cse0 (div |ULTIMATE.start_ensure_string_is_allocated_bounded_length_~len~1#1| 18446744073709551616))) (<= (+ (* 18446744073709551616 .cse0) 18446744073709551616) (+ |ULTIMATE.start_ensure_string_is_allocated_bounded_length_~len~1#1| (* 18446744073709551616 (div (+ (* |ULTIMATE.start_ensure_string_is_allocated_bounded_length_~len~1#1| (- 1)) 18446744073710786164 (* .cse0 18446744073709551616)) 18446744073709551616))))) (not (= (+ 18446744073709551600 (* 18446744073709551616 (div |ULTIMATE.start_ensure_string_is_allocated_~len#1| 18446744073709551616))) |ULTIMATE.start_ensure_string_is_allocated_~len#1|)) (= |ULTIMATE.start_ensure_string_is_allocated_~str~0#1.offset| 0) (not (= |ULTIMATE.start_ensure_string_is_allocated_nondet_length_#res#1.base| 0)) (let ((.cse2 (select |#memory_int| |ULTIMATE.start_aws_string_new_from_string_harness_~source~0#1.base|))) (let ((.cse1 (mod (select .cse2 (+ |ULTIMATE.start_aws_string_new_from_string_harness_~source~0#1.offset| 8)) 18446744073709551616))) (or (and (< 9223372036854775807 .cse1) (= (mod (select .cse2 (+ |ULTIMATE.start_aws_string_new_from_string_harness_~source~0#1.offset| .cse1 (- 18446744073709551600))) 256) 0)) (and (= (mod (select .cse2 (+ |ULTIMATE.start_aws_string_new_from_string_harness_~source~0#1.offset| 16 .cse1)) 256) 0) (<= .cse1 9223372036854775807))))) (not (= |ULTIMATE.start_ensure_string_is_allocated_bounded_length_#res#1.base| 0)) (= |ULTIMATE.start_ensure_string_is_allocated_nondet_length_#res#1.offset| 0) (= |ULTIMATE.start_aws_string_new_from_string_harness_~source~0#1.offset| 0)) [2021-12-06 18:17:44,293 INFO L854 garLoopResultBuilder]: At program point L6795(lines 6793 6798) the Hoare annotation is: false [2021-12-06 18:17:44,293 INFO L861 garLoopResultBuilder]: At program point L9347(line 9347) the Hoare annotation is: true [2021-12-06 18:17:44,293 INFO L858 garLoopResultBuilder]: For program point L9343-2(line 9343) no Hoare annotation was computed. [2021-12-06 18:17:44,293 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-12-06 18:17:44,293 INFO L854 garLoopResultBuilder]: At program point L9339(line 9339) the Hoare annotation is: false [2021-12-06 18:17:44,293 INFO L858 garLoopResultBuilder]: For program point L9339-1(line 9339) no Hoare annotation was computed. [2021-12-06 18:17:44,293 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-12-06 18:17:44,293 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-12-06 18:17:44,293 INFO L854 garLoopResultBuilder]: At program point L9343(line 9343) the Hoare annotation is: false [2021-12-06 18:17:44,293 INFO L854 garLoopResultBuilder]: At program point L9343-1(line 9343) the Hoare annotation is: false [2021-12-06 18:17:44,293 INFO L854 garLoopResultBuilder]: At program point L9335(line 9335) the Hoare annotation is: false [2021-12-06 18:17:44,293 INFO L858 garLoopResultBuilder]: For program point L9335-1(line 9335) no Hoare annotation was computed. [2021-12-06 18:17:44,293 INFO L854 garLoopResultBuilder]: At program point L7110(line 7110) the Hoare annotation is: false [2021-12-06 18:17:44,293 INFO L854 garLoopResultBuilder]: At program point L7106(line 7106) the Hoare annotation is: false [2021-12-06 18:17:44,293 INFO L858 garLoopResultBuilder]: For program point L7110-1(line 7110) no Hoare annotation was computed. [2021-12-06 18:17:44,293 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-12-06 18:17:44,293 INFO L854 garLoopResultBuilder]: At program point L9340(line 9340) the Hoare annotation is: false [2021-12-06 18:17:44,294 INFO L858 garLoopResultBuilder]: For program point L9340-1(line 9340) no Hoare annotation was computed. [2021-12-06 18:17:44,294 INFO L858 garLoopResultBuilder]: For program point L7106-1(line 7106) no Hoare annotation was computed. [2021-12-06 18:17:44,294 INFO L858 garLoopResultBuilder]: For program point L9332(line 9332) no Hoare annotation was computed. [2021-12-06 18:17:44,294 INFO L854 garLoopResultBuilder]: At program point L9332-2(line 9332) the Hoare annotation is: false [2021-12-06 18:17:44,294 INFO L858 garLoopResultBuilder]: For program point L6801-1(line 6801) no Hoare annotation was computed. [2021-12-06 18:17:44,294 INFO L854 garLoopResultBuilder]: At program point L6801(line 6801) the Hoare annotation is: (and (<= 195 |~#s_can_fail_allocator_static~0.base|) (<= |ULTIMATE.start_ensure_string_is_allocated_bounded_length_~max_size#1| 18446744073710786165) (< 0 (div |ULTIMATE.start_ensure_string_is_allocated_bounded_length_~max_size#1| 18446744073709551616))) [2021-12-06 18:17:44,294 INFO L858 garLoopResultBuilder]: For program point L9332-3(line 9332) no Hoare annotation was computed. [2021-12-06 18:17:44,294 INFO L858 garLoopResultBuilder]: For program point L9332-4(line 9332) no Hoare annotation was computed. [2021-12-06 18:17:44,294 INFO L858 garLoopResultBuilder]: For program point L7107-1(lines 7107 7109) no Hoare annotation was computed. [2021-12-06 18:17:44,294 INFO L854 garLoopResultBuilder]: At program point L7107(lines 7107 7109) the Hoare annotation is: false [2021-12-06 18:17:44,294 INFO L854 garLoopResultBuilder]: At program point L9341(line 9341) the Hoare annotation is: false [2021-12-06 18:17:44,294 INFO L858 garLoopResultBuilder]: For program point L9341-1(line 9341) no Hoare annotation was computed. [2021-12-06 18:17:44,294 INFO L854 garLoopResultBuilder]: At program point L6810(line 6810) the Hoare annotation is: false [2021-12-06 18:17:44,294 INFO L854 garLoopResultBuilder]: At program point L9345(line 9345) the Hoare annotation is: (and (< 0 |~#s_can_fail_allocator_static~0.base|) (= |ULTIMATE.start_aws_string_new_from_string_harness_#t~ret1328#1| 1)) [2021-12-06 18:17:44,294 INFO L858 garLoopResultBuilder]: For program point L7099(lines 7099 7112) no Hoare annotation was computed. [2021-12-06 18:17:44,294 INFO L858 garLoopResultBuilder]: For program point L9345-1(line 9345) no Hoare annotation was computed. [2021-12-06 18:17:44,295 INFO L858 garLoopResultBuilder]: For program point L6810-3(line 6810) no Hoare annotation was computed. [2021-12-06 18:17:44,295 INFO L854 garLoopResultBuilder]: At program point L6810-2(line 6810) the Hoare annotation is: false [2021-12-06 18:17:44,295 INFO L858 garLoopResultBuilder]: For program point L6810-1(lines 6810 6811) no Hoare annotation was computed. [2021-12-06 18:17:44,295 INFO L854 garLoopResultBuilder]: At program point L6802(line 6802) the Hoare annotation is: (and (<= 195 |~#s_can_fail_allocator_static~0.base|) (<= |ULTIMATE.start_ensure_string_is_allocated_bounded_length_~max_size#1| 18446744073710786165) (< 0 (div |ULTIMATE.start_ensure_string_is_allocated_bounded_length_~max_size#1| 18446744073709551616))) [2021-12-06 18:17:44,295 INFO L858 garLoopResultBuilder]: For program point L6810-5(lines 6810 6811) no Hoare annotation was computed. [2021-12-06 18:17:44,295 INFO L858 garLoopResultBuilder]: For program point L6802-1(line 6802) no Hoare annotation was computed. [2021-12-06 18:17:44,295 INFO L858 garLoopResultBuilder]: For program point L9329(lines 9329 9346) no Hoare annotation was computed. [2021-12-06 18:17:44,295 INFO L858 garLoopResultBuilder]: For program point L223(line 223) no Hoare annotation was computed. [2021-12-06 18:17:44,295 INFO L861 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 222 224) the Hoare annotation is: true [2021-12-06 18:17:44,295 INFO L858 garLoopResultBuilder]: For program point L223-1(line 223) no Hoare annotation was computed. [2021-12-06 18:17:44,295 INFO L858 garLoopResultBuilder]: For program point L223-3(lines 222 224) no Hoare annotation was computed. [2021-12-06 18:17:44,295 INFO L858 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 222 224) no Hoare annotation was computed. [2021-12-06 18:17:44,295 INFO L858 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 223) no Hoare annotation was computed. [2021-12-06 18:17:44,297 INFO L732 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:17:44,298 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-06 18:17:44,304 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.12 06:17:44 BoogieIcfgContainer [2021-12-06 18:17:44,304 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-06 18:17:44,305 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-06 18:17:44,305 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-06 18:17:44,305 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-06 18:17:44,305 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 06:17:13" (3/4) ... [2021-12-06 18:17:44,307 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-12-06 18:17:44,311 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure can_fail_malloc [2021-12-06 18:17:44,311 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure bounded_malloc [2021-12-06 18:17:44,311 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure aws_mem_acquire [2021-12-06 18:17:44,311 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure aws_string_new_from_array [2021-12-06 18:17:44,311 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure nondet_bool [2021-12-06 18:17:44,311 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure #Ultimate.C_memcpy [2021-12-06 18:17:44,311 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2021-12-06 18:17:44,312 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure aws_raise_error [2021-12-06 18:17:44,312 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure can_fail_allocator [2021-12-06 18:17:44,312 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure aws_string_is_valid [2021-12-06 18:17:44,312 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure aws_allocator_is_valid [2021-12-06 18:17:44,312 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure aws_add_size_checked [2021-12-06 18:17:44,312 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure nondet_uint64_t [2021-12-06 18:17:44,312 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2021-12-06 18:17:44,312 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __CPROVER_overflow_plus [2021-12-06 18:17:44,312 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure aws_string_new_from_string [2021-12-06 18:17:44,325 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 154 nodes and edges [2021-12-06 18:17:44,326 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 68 nodes and edges [2021-12-06 18:17:44,328 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 28 nodes and edges [2021-12-06 18:17:44,329 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2021-12-06 18:17:44,330 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-12-06 18:17:44,331 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-12-06 18:17:44,332 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-12-06 18:17:44,334 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-12-06 18:17:45,048 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9b5932f-850a-4cba-9202-351ce274b5ee/bin/uautomizer-DrprNOufMa/witness.graphml [2021-12-06 18:17:45,048 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-06 18:17:45,048 INFO L158 Benchmark]: Toolchain (without parser) took 35429.48ms. Allocated memory was 123.7MB in the beginning and 287.3MB in the end (delta: 163.6MB). Free memory was 74.8MB in the beginning and 192.1MB in the end (delta: -117.3MB). Peak memory consumption was 200.8MB. Max. memory is 16.1GB. [2021-12-06 18:17:45,048 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 123.7MB. Free memory is still 100.8MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 18:17:45,049 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1954.33ms. Allocated memory was 123.7MB in the beginning and 159.4MB in the end (delta: 35.7MB). Free memory was 74.6MB in the beginning and 64.8MB in the end (delta: 9.8MB). Peak memory consumption was 69.6MB. Max. memory is 16.1GB. [2021-12-06 18:17:45,049 INFO L158 Benchmark]: Boogie Procedure Inliner took 135.41ms. Allocated memory is still 159.4MB. Free memory was 64.8MB in the beginning and 101.1MB in the end (delta: -36.3MB). Peak memory consumption was 15.6MB. Max. memory is 16.1GB. [2021-12-06 18:17:45,049 INFO L158 Benchmark]: Boogie Preprocessor took 59.22ms. Allocated memory is still 159.4MB. Free memory was 101.1MB in the beginning and 94.0MB in the end (delta: 7.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-06 18:17:45,049 INFO L158 Benchmark]: RCFGBuilder took 1267.87ms. Allocated memory was 159.4MB in the beginning and 199.2MB in the end (delta: 39.8MB). Free memory was 94.0MB in the beginning and 89.5MB in the end (delta: 4.5MB). Peak memory consumption was 50.4MB. Max. memory is 16.1GB. [2021-12-06 18:17:45,049 INFO L158 Benchmark]: TraceAbstraction took 31265.21ms. Allocated memory was 199.2MB in the beginning and 287.3MB in the end (delta: 88.1MB). Free memory was 89.5MB in the beginning and 179.8MB in the end (delta: -90.4MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 18:17:45,050 INFO L158 Benchmark]: Witness Printer took 742.98ms. Allocated memory is still 287.3MB. Free memory was 179.8MB in the beginning and 192.1MB in the end (delta: -12.3MB). Peak memory consumption was 141.9MB. Max. memory is 16.1GB. [2021-12-06 18:17:45,051 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 123.7MB. Free memory is still 100.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1954.33ms. Allocated memory was 123.7MB in the beginning and 159.4MB in the end (delta: 35.7MB). Free memory was 74.6MB in the beginning and 64.8MB in the end (delta: 9.8MB). Peak memory consumption was 69.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 135.41ms. Allocated memory is still 159.4MB. Free memory was 64.8MB in the beginning and 101.1MB in the end (delta: -36.3MB). Peak memory consumption was 15.6MB. Max. memory is 16.1GB. * Boogie Preprocessor took 59.22ms. Allocated memory is still 159.4MB. Free memory was 101.1MB in the beginning and 94.0MB in the end (delta: 7.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 1267.87ms. Allocated memory was 159.4MB in the beginning and 199.2MB in the end (delta: 39.8MB). Free memory was 94.0MB in the beginning and 89.5MB in the end (delta: 4.5MB). Peak memory consumption was 50.4MB. Max. memory is 16.1GB. * TraceAbstraction took 31265.21ms. Allocated memory was 199.2MB in the beginning and 287.3MB in the end (delta: 88.1MB). Free memory was 89.5MB in the beginning and 179.8MB in the end (delta: -90.4MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 742.98ms. Allocated memory is still 287.3MB. Free memory was 179.8MB in the beginning and 192.1MB in the end (delta: -12.3MB). Peak memory consumption was 141.9MB. 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 17 procedures, 153 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 31.2s, OverallIterations: 13, TraceHistogramMax: 7, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 10.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1866 SdHoareTripleChecker+Valid, 6.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1759 mSDsluCounter, 14292 SdHoareTripleChecker+Invalid, 6.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 648 IncrementalHoareTripleChecker+Unchecked, 12189 mSDsCounter, 1096 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6948 IncrementalHoareTripleChecker+Invalid, 8692 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1096 mSolverCounterUnsat, 2103 mSDtfsCounter, 6948 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1686 GetRequests, 1327 SyntacticMatches, 5 SemanticMatches, 354 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 3081 ImplicationChecksByTransitivity, 9.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=192occurred in iteration=7, InterpolantAutomatonStates: 177, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 13 MinimizatonAttempts, 257 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 62 LocationsWithAnnotation, 404 PreInvPairs, 410 NumberOfFragments, 315 HoareAnnotationTreeSize, 404 FomulaSimplifications, 76 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 62 FomulaSimplificationsInter, 332 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 2.4s SatisfiabilityAnalysisTime, 15.0s InterpolantComputationTime, 2365 NumberOfCodeBlocks, 2365 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 2434 ConstructedInterpolants, 33 QuantifiedInterpolants, 9701 SizeOfPredicates, 105 NumberOfNonLiveVariables, 21863 ConjunctsInSsa, 318 ConjunctsInUnsatCore, 22 InterpolantComputations, 11 PerfectInterpolantSequences, 1233/1351 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: -1]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 6793]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 8985]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 9347]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: -1]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 2541]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 6806]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 6800]: Loop Invariant Derived loop invariant: 0 RESULT: Ultimate proved your program to be correct! [2021-12-06 18:17:45,082 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9b5932f-850a-4cba-9202-351ce274b5ee/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE