./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_compare_lexical_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a635ba8b-be54-49ec-9a1b-04d20f1f047f/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a635ba8b-be54-49ec-9a1b-04d20f1f047f/bin/uautomizer-DQz5hQGWxF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a635ba8b-be54-49ec-9a1b-04d20f1f047f/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a635ba8b-be54-49ec-9a1b-04d20f1f047f/bin/uautomizer-DQz5hQGWxF/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_compare_lexical_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a635ba8b-be54-49ec-9a1b-04d20f1f047f/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a635ba8b-be54-49ec-9a1b-04d20f1f047f/bin/uautomizer-DQz5hQGWxF --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 60926facf5511174d61dcd6a0b7a731efc9ccdb495bc26b58400da4cd6320ca0 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 07:41:44,510 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 07:41:44,512 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 07:41:44,585 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 07:41:44,586 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 07:41:44,592 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 07:41:44,594 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 07:41:44,599 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 07:41:44,602 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 07:41:44,611 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 07:41:44,613 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 07:41:44,614 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 07:41:44,615 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 07:41:44,616 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 07:41:44,618 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 07:41:44,620 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 07:41:44,621 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 07:41:44,622 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 07:41:44,630 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 07:41:44,643 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 07:41:44,645 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 07:41:44,647 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 07:41:44,656 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 07:41:44,657 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 07:41:44,662 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 07:41:44,663 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 07:41:44,663 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 07:41:44,666 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 07:41:44,667 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 07:41:44,668 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 07:41:44,669 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 07:41:44,670 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 07:41:44,672 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 07:41:44,674 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 07:41:44,676 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 07:41:44,676 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 07:41:44,677 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 07:41:44,677 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 07:41:44,677 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 07:41:44,678 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 07:41:44,679 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 07:41:44,680 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a635ba8b-be54-49ec-9a1b-04d20f1f047f/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-20 07:41:44,736 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 07:41:44,737 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 07:41:44,737 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 07:41:44,738 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 07:41:44,739 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 07:41:44,739 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 07:41:44,740 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 07:41:44,740 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 07:41:44,740 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 07:41:44,740 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 07:41:44,742 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 07:41:44,742 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 07:41:44,742 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 07:41:44,742 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 07:41:44,743 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 07:41:44,743 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 07:41:44,743 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 07:41:44,743 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 07:41:44,744 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 07:41:44,744 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 07:41:44,744 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 07:41:44,744 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 07:41:44,744 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 07:41:44,745 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 07:41:44,745 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 07:41:44,745 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-20 07:41:44,745 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 07:41:44,746 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-20 07:41:44,746 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-20 07:41:44,747 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 07:41:44,748 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 07:41:44,748 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_a635ba8b-be54-49ec-9a1b-04d20f1f047f/bin/uautomizer-DQz5hQGWxF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a635ba8b-be54-49ec-9a1b-04d20f1f047f/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 60926facf5511174d61dcd6a0b7a731efc9ccdb495bc26b58400da4cd6320ca0 [2021-11-20 07:41:45,012 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 07:41:45,037 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 07:41:45,040 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 07:41:45,041 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 07:41:45,042 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 07:41:45,044 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a635ba8b-be54-49ec-9a1b-04d20f1f047f/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_compare_lexical_harness.i [2021-11-20 07:41:45,145 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a635ba8b-be54-49ec-9a1b-04d20f1f047f/bin/uautomizer-DQz5hQGWxF/data/2f6e90680/a4e8b7492c1e4a59b159d9e14a539d97/FLAGc7bc84168 [2021-11-20 07:41:46,197 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 07:41:46,199 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a635ba8b-be54-49ec-9a1b-04d20f1f047f/sv-benchmarks/c/aws-c-common/aws_byte_cursor_compare_lexical_harness.i [2021-11-20 07:41:46,260 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a635ba8b-be54-49ec-9a1b-04d20f1f047f/bin/uautomizer-DQz5hQGWxF/data/2f6e90680/a4e8b7492c1e4a59b159d9e14a539d97/FLAGc7bc84168 [2021-11-20 07:41:46,533 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a635ba8b-be54-49ec-9a1b-04d20f1f047f/bin/uautomizer-DQz5hQGWxF/data/2f6e90680/a4e8b7492c1e4a59b159d9e14a539d97 [2021-11-20 07:41:46,536 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 07:41:46,537 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 07:41:46,539 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 07:41:46,539 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 07:41:46,545 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 07:41:46,546 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:41:46" (1/1) ... [2021-11-20 07:41:46,547 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@117aa3a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:41:46, skipping insertion in model container [2021-11-20 07:41:46,547 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:41:46" (1/1) ... [2021-11-20 07:41:46,552 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 07:41:46,670 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 07:41:46,968 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_a635ba8b-be54-49ec-9a1b-04d20f1f047f/sv-benchmarks/c/aws-c-common/aws_byte_cursor_compare_lexical_harness.i[4505,4518] [2021-11-20 07:41:46,975 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_a635ba8b-be54-49ec-9a1b-04d20f1f047f/sv-benchmarks/c/aws-c-common/aws_byte_cursor_compare_lexical_harness.i[4565,4578] [2021-11-20 07:41:47,985 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 07:41:47,986 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 07:41:47,986 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 07:41:47,987 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 07:41:47,988 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 07:41:48,003 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 07:41:48,004 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 07:41:48,006 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 07:41:48,006 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 07:41:48,435 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-20 07:41:48,437 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-20 07:41:48,438 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-20 07:41:48,439 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-20 07:41:48,441 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-20 07:41:48,442 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-20 07:41:48,442 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-20 07:41:48,443 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-20 07:41:48,444 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-20 07:41:48,445 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-20 07:41:48,628 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-20 07:41:48,723 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 07:41:48,724 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 07:41:48,803 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 07:41:48,875 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 07:41:48,890 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_a635ba8b-be54-49ec-9a1b-04d20f1f047f/sv-benchmarks/c/aws-c-common/aws_byte_cursor_compare_lexical_harness.i[4505,4518] [2021-11-20 07:41:48,891 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_a635ba8b-be54-49ec-9a1b-04d20f1f047f/sv-benchmarks/c/aws-c-common/aws_byte_cursor_compare_lexical_harness.i[4565,4578] [2021-11-20 07:41:48,953 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 07:41:48,954 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 07:41:48,954 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 07:41:48,955 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 07:41:48,955 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 07:41:48,974 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 07:41:48,977 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 07:41:48,978 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 07:41:48,979 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 07:41:49,110 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-20 07:41:49,111 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-20 07:41:49,111 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-20 07:41:49,112 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-20 07:41:49,129 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-20 07:41:49,130 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-20 07:41:49,131 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-20 07:41:49,134 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-20 07:41:49,134 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-20 07:41:49,135 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-20 07:41:49,188 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-20 07:41:49,321 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 07:41:49,322 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 07:41:49,424 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 07:41:49,781 INFO L208 MainTranslator]: Completed translation [2021-11-20 07:41:49,782 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:41:49 WrapperNode [2021-11-20 07:41:49,782 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 07:41:49,783 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 07:41:49,783 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 07:41:49,783 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 07:41:49,792 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:41:49" (1/1) ... [2021-11-20 07:41:49,939 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:41:49" (1/1) ... [2021-11-20 07:41:50,046 INFO L137 Inliner]: procedures = 691, calls = 2656, calls flagged for inlining = 59, calls inlined = 6, statements flattened = 925 [2021-11-20 07:41:50,047 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 07:41:50,048 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 07:41:50,048 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 07:41:50,048 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 07:41:50,060 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:41:49" (1/1) ... [2021-11-20 07:41:50,060 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:41:49" (1/1) ... [2021-11-20 07:41:50,076 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:41:49" (1/1) ... [2021-11-20 07:41:50,077 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:41:49" (1/1) ... [2021-11-20 07:41:50,157 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:41:49" (1/1) ... [2021-11-20 07:41:50,173 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:41:49" (1/1) ... [2021-11-20 07:41:50,181 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:41:49" (1/1) ... [2021-11-20 07:41:50,206 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 07:41:50,207 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 07:41:50,207 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 07:41:50,207 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 07:41:50,210 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:41:49" (1/1) ... [2021-11-20 07:41:50,220 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 07:41:50,231 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a635ba8b-be54-49ec-9a1b-04d20f1f047f/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:41:50,255 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a635ba8b-be54-49ec-9a1b-04d20f1f047f/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 07:41:50,288 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a635ba8b-be54-49ec-9a1b-04d20f1f047f/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 07:41:50,307 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_valid [2021-11-20 07:41:50,307 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_valid [2021-11-20 07:41:50,308 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_compare_lexical [2021-11-20 07:41:50,308 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_compare_lexical [2021-11-20 07:41:50,308 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-20 07:41:50,309 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-20 07:41:50,309 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-11-20 07:41:50,309 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-11-20 07:41:50,309 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-20 07:41:50,310 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_bounded [2021-11-20 07:41:50,310 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_bounded [2021-11-20 07:41:50,311 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-20 07:41:50,311 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-20 07:41:50,311 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-20 07:41:50,312 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 07:41:50,312 INFO L130 BoogieDeclarations]: Found specification of procedure save_byte_from_array [2021-11-20 07:41:50,313 INFO L138 BoogieDeclarations]: Found implementation of procedure save_byte_from_array [2021-11-20 07:41:50,313 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-20 07:41:50,313 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 07:41:50,313 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 07:41:50,313 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-11-20 07:41:50,314 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-11-20 07:41:50,314 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2021-11-20 07:41:50,314 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2021-11-20 07:41:50,315 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-20 07:41:50,315 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-20 07:41:50,315 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-20 07:41:50,316 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-20 07:41:50,316 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-20 07:41:50,316 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2021-11-20 07:41:50,317 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2021-11-20 07:41:50,317 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-20 07:41:50,317 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_byte_cursor_has_allocated_buffer_member [2021-11-20 07:41:50,317 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_byte_cursor_has_allocated_buffer_member [2021-11-20 07:41:50,318 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-20 07:41:50,654 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 07:41:50,662 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 07:41:52,009 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 07:41:52,026 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 07:41:52,026 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-20 07:41:52,029 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:41:52 BoogieIcfgContainer [2021-11-20 07:41:52,029 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 07:41:52,031 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 07:41:52,031 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 07:41:52,035 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 07:41:52,035 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 07:41:46" (1/3) ... [2021-11-20 07:41:52,036 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37bccaec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 07:41:52, skipping insertion in model container [2021-11-20 07:41:52,036 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:41:49" (2/3) ... [2021-11-20 07:41:52,037 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37bccaec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 07:41:52, skipping insertion in model container [2021-11-20 07:41:52,037 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:41:52" (3/3) ... [2021-11-20 07:41:52,039 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_byte_cursor_compare_lexical_harness.i [2021-11-20 07:41:52,045 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 07:41:52,046 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-20 07:41:52,125 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 07:41:52,137 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 [2021-11-20 07:41:52,138 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-20 07:41:52,180 INFO L276 IsEmpty]: Start isEmpty. Operand has 151 states, 92 states have (on average 1.2282608695652173) internal successors, (113), 93 states have internal predecessors, (113), 46 states have call successors, (46), 11 states have call predecessors, (46), 11 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2021-11-20 07:41:52,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-11-20 07:41:52,205 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:41:52,206 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 4, 4, 4, 4, 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] [2021-11-20 07:41:52,207 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:41:52,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:41:52,213 INFO L85 PathProgramCache]: Analyzing trace with hash 616113637, now seen corresponding path program 1 times [2021-11-20 07:41:52,222 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:41:52,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366423835] [2021-11-20 07:41:52,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:41:52,224 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:41:52,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:41:52,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 07:41:52,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:41:53,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:41:53,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:41:53,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-20 07:41:53,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:41:53,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:41:53,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:41:53,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-11-20 07:41:53,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:41:53,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-11-20 07:41:53,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:41:53,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-20 07:41:53,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:41:53,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-11-20 07:41:53,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:41:53,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-11-20 07:41:53,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:41:53,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-11-20 07:41:53,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:41:53,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-11-20 07:41:53,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:41:53,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-20 07:41:53,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:41:53,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-11-20 07:41:53,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:41:53,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-11-20 07:41:53,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:41:53,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-11-20 07:41:53,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:41:53,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-11-20 07:41:53,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:41:53,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-11-20 07:41:53,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:41:53,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-11-20 07:41:53,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:41:53,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-11-20 07:41:53,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:41:53,521 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2021-11-20 07:41:53,521 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:41:53,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366423835] [2021-11-20 07:41:53,523 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366423835] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 07:41:53,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1527619848] [2021-11-20 07:41:53,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:41:53,524 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:41:53,524 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a635ba8b-be54-49ec-9a1b-04d20f1f047f/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:41:53,530 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a635ba8b-be54-49ec-9a1b-04d20f1f047f/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:41:53,555 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a635ba8b-be54-49ec-9a1b-04d20f1f047f/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-20 07:41:54,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:41:54,129 INFO L263 TraceCheckSpWp]: Trace formula consists of 2646 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-20 07:41:54,149 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:41:54,661 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2021-11-20 07:41:54,661 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 07:41:54,662 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1527619848] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:41:54,662 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 07:41:54,663 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2021-11-20 07:41:54,665 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140797143] [2021-11-20 07:41:54,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:41:54,672 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 07:41:54,672 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:41:54,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 07:41:54,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-11-20 07:41:54,720 INFO L87 Difference]: Start difference. First operand has 151 states, 92 states have (on average 1.2282608695652173) internal successors, (113), 93 states have internal predecessors, (113), 46 states have call successors, (46), 11 states have call predecessors, (46), 11 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2021-11-20 07:41:55,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:41:55,114 INFO L93 Difference]: Finished difference Result 301 states and 447 transitions. [2021-11-20 07:41:55,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 07:41:55,116 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 120 [2021-11-20 07:41:55,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:41:55,133 INFO L225 Difference]: With dead ends: 301 [2021-11-20 07:41:55,133 INFO L226 Difference]: Without dead ends: 148 [2021-11-20 07:41:55,145 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2021-11-20 07:41:55,155 INFO L933 BasicCegarLoop]: 156 mSDtfsCounter, 222 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 432 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 07:41:55,156 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [226 Valid, 432 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 07:41:55,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2021-11-20 07:41:55,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 148. [2021-11-20 07:41:55,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 89 states have (on average 1.202247191011236) internal successors, (107), 91 states have internal predecessors, (107), 46 states have call successors, (46), 11 states have call predecessors, (46), 12 states have return successors, (51), 45 states have call predecessors, (51), 45 states have call successors, (51) [2021-11-20 07:41:55,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 204 transitions. [2021-11-20 07:41:55,246 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 204 transitions. Word has length 120 [2021-11-20 07:41:55,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:41:55,248 INFO L470 AbstractCegarLoop]: Abstraction has 148 states and 204 transitions. [2021-11-20 07:41:55,248 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2021-11-20 07:41:55,249 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 204 transitions. [2021-11-20 07:41:55,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-11-20 07:41:55,261 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:41:55,262 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 4, 4, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:41:55,306 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a635ba8b-be54-49ec-9a1b-04d20f1f047f/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-20 07:41:55,485 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a635ba8b-be54-49ec-9a1b-04d20f1f047f/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-11-20 07:41:55,485 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:41:55,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:41:55,486 INFO L85 PathProgramCache]: Analyzing trace with hash 138900842, now seen corresponding path program 1 times [2021-11-20 07:41:55,486 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:41:55,486 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899087340] [2021-11-20 07:41:55,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:41:55,486 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:41:55,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:41:55,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 07:41:55,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:41:55,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:41:55,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:41:55,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-20 07:41:55,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:41:55,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:41:55,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:41:55,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-11-20 07:41:55,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:41:55,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-11-20 07:41:55,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:41:55,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-11-20 07:41:55,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:41:55,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-11-20 07:41:55,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:41:55,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-11-20 07:41:55,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:41:55,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-11-20 07:41:55,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:41:55,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-11-20 07:41:55,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:41:56,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-11-20 07:41:56,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:41:56,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-11-20 07:41:56,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:41:56,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-11-20 07:41:56,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:41:56,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-11-20 07:41:56,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:41:56,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-11-20 07:41:56,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:41:56,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-11-20 07:41:56,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:41:56,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-11-20 07:41:56,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:41:56,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-11-20 07:41:56,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:41:56,097 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2021-11-20 07:41:56,098 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:41:56,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899087340] [2021-11-20 07:41:56,098 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899087340] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 07:41:56,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2060193384] [2021-11-20 07:41:56,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:41:56,099 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:41:56,099 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a635ba8b-be54-49ec-9a1b-04d20f1f047f/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:41:56,100 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a635ba8b-be54-49ec-9a1b-04d20f1f047f/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:41:56,125 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a635ba8b-be54-49ec-9a1b-04d20f1f047f/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-20 07:41:56,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:41:56,652 INFO L263 TraceCheckSpWp]: Trace formula consists of 2651 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-20 07:41:56,660 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:41:57,123 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 96 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2021-11-20 07:41:57,124 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 07:41:57,124 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2060193384] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:41:57,124 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 07:41:57,125 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [12] total 18 [2021-11-20 07:41:57,125 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570917193] [2021-11-20 07:41:57,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:41:57,127 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-20 07:41:57,127 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:41:57,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-20 07:41:57,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2021-11-20 07:41:57,129 INFO L87 Difference]: Start difference. First operand 148 states and 204 transitions. Second operand has 8 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 4 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 4 states have call successors, (19) [2021-11-20 07:41:57,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:41:57,544 INFO L93 Difference]: Finished difference Result 242 states and 337 transitions. [2021-11-20 07:41:57,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-20 07:41:57,545 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 4 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 4 states have call successors, (19) Word has length 122 [2021-11-20 07:41:57,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:41:57,551 INFO L225 Difference]: With dead ends: 242 [2021-11-20 07:41:57,551 INFO L226 Difference]: Without dead ends: 148 [2021-11-20 07:41:57,553 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=71, Invalid=435, Unknown=0, NotChecked=0, Total=506 [2021-11-20 07:41:57,555 INFO L933 BasicCegarLoop]: 137 mSDtfsCounter, 233 mSDsluCounter, 601 mSDsCounter, 0 mSdLazyCounter, 296 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 738 SdHoareTripleChecker+Invalid, 394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-20 07:41:57,556 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [233 Valid, 738 Invalid, 394 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 296 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-20 07:41:57,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2021-11-20 07:41:57,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 148. [2021-11-20 07:41:57,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 89 states have (on average 1.202247191011236) internal successors, (107), 91 states have internal predecessors, (107), 46 states have call successors, (46), 11 states have call predecessors, (46), 12 states have return successors, (49), 45 states have call predecessors, (49), 45 states have call successors, (49) [2021-11-20 07:41:57,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 202 transitions. [2021-11-20 07:41:57,600 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 202 transitions. Word has length 122 [2021-11-20 07:41:57,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:41:57,603 INFO L470 AbstractCegarLoop]: Abstraction has 148 states and 202 transitions. [2021-11-20 07:41:57,605 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 4 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 4 states have call successors, (19) [2021-11-20 07:41:57,605 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 202 transitions. [2021-11-20 07:41:57,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-11-20 07:41:57,612 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:41:57,612 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:41:57,657 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a635ba8b-be54-49ec-9a1b-04d20f1f047f/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-20 07:41:57,828 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a635ba8b-be54-49ec-9a1b-04d20f1f047f/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:41:57,828 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:41:57,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:41:57,829 INFO L85 PathProgramCache]: Analyzing trace with hash -2034710092, now seen corresponding path program 2 times [2021-11-20 07:41:57,829 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:41:57,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875281702] [2021-11-20 07:41:57,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:41:57,829 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:41:57,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:41:58,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 07:41:58,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:41:58,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:41:58,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:41:58,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-20 07:41:58,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:41:58,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:41:58,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:41:58,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-11-20 07:41:58,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:41:58,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-11-20 07:41:58,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:41:58,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-11-20 07:41:58,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:41:58,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-11-20 07:41:58,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:41:58,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-11-20 07:41:58,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:41:58,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-11-20 07:41:58,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:41:58,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-11-20 07:41:58,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:41:58,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-11-20 07:41:58,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:41:58,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-11-20 07:41:58,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:41:58,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-11-20 07:41:58,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:41:58,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-11-20 07:41:58,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:41:58,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-11-20 07:41:58,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:41:58,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-11-20 07:41:58,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:41:58,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-11-20 07:41:58,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:41:58,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-11-20 07:41:58,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:41:58,303 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2021-11-20 07:41:58,303 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:41:58,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875281702] [2021-11-20 07:41:58,304 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875281702] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 07:41:58,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [923322433] [2021-11-20 07:41:58,304 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-20 07:41:58,305 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:41:58,305 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a635ba8b-be54-49ec-9a1b-04d20f1f047f/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:41:58,306 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a635ba8b-be54-49ec-9a1b-04d20f1f047f/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:41:58,332 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a635ba8b-be54-49ec-9a1b-04d20f1f047f/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-20 07:41:58,769 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-20 07:41:58,769 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 07:41:58,779 INFO L263 TraceCheckSpWp]: Trace formula consists of 2302 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-20 07:41:58,784 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:41:59,064 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2021-11-20 07:41:59,064 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 07:41:59,064 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [923322433] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:41:59,064 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 07:41:59,065 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 15 [2021-11-20 07:41:59,065 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672814978] [2021-11-20 07:41:59,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:41:59,066 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-20 07:41:59,066 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:41:59,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-20 07:41:59,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2021-11-20 07:41:59,067 INFO L87 Difference]: Start difference. First operand 148 states and 202 transitions. Second operand has 8 states, 7 states have (on average 6.571428571428571) internal successors, (46), 6 states have internal predecessors, (46), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) [2021-11-20 07:41:59,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:41:59,170 INFO L93 Difference]: Finished difference Result 160 states and 221 transitions. [2021-11-20 07:41:59,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-20 07:41:59,171 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 6.571428571428571) internal successors, (46), 6 states have internal predecessors, (46), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) Word has length 126 [2021-11-20 07:41:59,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:41:59,174 INFO L225 Difference]: With dead ends: 160 [2021-11-20 07:41:59,175 INFO L226 Difference]: Without dead ends: 158 [2021-11-20 07:41:59,175 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2021-11-20 07:41:59,176 INFO L933 BasicCegarLoop]: 198 mSDtfsCounter, 16 mSDsluCounter, 1156 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 1354 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 07:41:59,177 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 1354 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 07:41:59,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2021-11-20 07:41:59,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 157. [2021-11-20 07:41:59,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 95 states have (on average 1.1894736842105262) internal successors, (113), 98 states have internal predecessors, (113), 47 states have call successors, (47), 12 states have call predecessors, (47), 14 states have return successors, (58), 46 states have call predecessors, (58), 46 states have call successors, (58) [2021-11-20 07:41:59,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 218 transitions. [2021-11-20 07:41:59,196 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 218 transitions. Word has length 126 [2021-11-20 07:41:59,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:41:59,197 INFO L470 AbstractCegarLoop]: Abstraction has 157 states and 218 transitions. [2021-11-20 07:41:59,198 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 6.571428571428571) internal successors, (46), 6 states have internal predecessors, (46), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) [2021-11-20 07:41:59,198 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 218 transitions. [2021-11-20 07:41:59,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-11-20 07:41:59,200 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:41:59,201 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:41:59,241 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a635ba8b-be54-49ec-9a1b-04d20f1f047f/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-20 07:41:59,429 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a635ba8b-be54-49ec-9a1b-04d20f1f047f/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:41:59,429 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:41:59,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:41:59,430 INFO L85 PathProgramCache]: Analyzing trace with hash 1275067964, now seen corresponding path program 1 times [2021-11-20 07:41:59,430 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:41:59,430 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399290533] [2021-11-20 07:41:59,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:41:59,430 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:41:59,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:41:59,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 07:41:59,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:41:59,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:41:59,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:41:59,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-20 07:41:59,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:41:59,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:41:59,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:41:59,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-11-20 07:41:59,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:41:59,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-11-20 07:41:59,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:41:59,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-11-20 07:41:59,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:41:59,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-11-20 07:41:59,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:41:59,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-11-20 07:41:59,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:41:59,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-11-20 07:41:59,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:41:59,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-11-20 07:41:59,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:41:59,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-11-20 07:41:59,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:41:59,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-11-20 07:41:59,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:41:59,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-11-20 07:41:59,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:41:59,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-11-20 07:41:59,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:41:59,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-11-20 07:41:59,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:41:59,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-11-20 07:41:59,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:41:59,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-11-20 07:41:59,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:41:59,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-11-20 07:41:59,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:41:59,946 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2021-11-20 07:41:59,946 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:41:59,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399290533] [2021-11-20 07:41:59,946 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399290533] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 07:41:59,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [563121786] [2021-11-20 07:41:59,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:41:59,947 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:41:59,947 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a635ba8b-be54-49ec-9a1b-04d20f1f047f/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:41:59,949 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a635ba8b-be54-49ec-9a1b-04d20f1f047f/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:41:59,974 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a635ba8b-be54-49ec-9a1b-04d20f1f047f/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-20 07:42:00,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:42:00,464 INFO L263 TraceCheckSpWp]: Trace formula consists of 2673 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-20 07:42:00,470 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:42:00,912 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 107 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2021-11-20 07:42:00,913 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 07:42:00,913 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [563121786] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:42:00,913 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 07:42:00,914 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 15 [2021-11-20 07:42:00,914 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74513714] [2021-11-20 07:42:00,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:42:00,915 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-20 07:42:00,915 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:42:00,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-20 07:42:00,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2021-11-20 07:42:00,916 INFO L87 Difference]: Start difference. First operand 157 states and 218 transitions. Second operand has 8 states, 8 states have (on average 7.25) internal successors, (58), 7 states have internal predecessors, (58), 4 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (19), 4 states have call predecessors, (19), 4 states have call successors, (19) [2021-11-20 07:42:01,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:42:01,374 INFO L93 Difference]: Finished difference Result 307 states and 437 transitions. [2021-11-20 07:42:01,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-20 07:42:01,374 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.25) internal successors, (58), 7 states have internal predecessors, (58), 4 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (19), 4 states have call predecessors, (19), 4 states have call successors, (19) Word has length 130 [2021-11-20 07:42:01,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:42:01,377 INFO L225 Difference]: With dead ends: 307 [2021-11-20 07:42:01,378 INFO L226 Difference]: Without dead ends: 187 [2021-11-20 07:42:01,379 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=316, Unknown=0, NotChecked=0, Total=380 [2021-11-20 07:42:01,380 INFO L933 BasicCegarLoop]: 148 mSDtfsCounter, 277 mSDsluCounter, 688 mSDsCounter, 0 mSdLazyCounter, 311 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 279 SdHoareTripleChecker+Valid, 836 SdHoareTripleChecker+Invalid, 397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 311 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-20 07:42:01,380 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [279 Valid, 836 Invalid, 397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 311 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-20 07:42:01,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2021-11-20 07:42:01,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 187. [2021-11-20 07:42:01,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 111 states have (on average 1.1981981981981982) internal successors, (133), 114 states have internal predecessors, (133), 60 states have call successors, (60), 13 states have call predecessors, (60), 15 states have return successors, (73), 59 states have call predecessors, (73), 59 states have call successors, (73) [2021-11-20 07:42:01,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 266 transitions. [2021-11-20 07:42:01,403 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 266 transitions. Word has length 130 [2021-11-20 07:42:01,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:42:01,404 INFO L470 AbstractCegarLoop]: Abstraction has 187 states and 266 transitions. [2021-11-20 07:42:01,404 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.25) internal successors, (58), 7 states have internal predecessors, (58), 4 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (19), 4 states have call predecessors, (19), 4 states have call successors, (19) [2021-11-20 07:42:01,404 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 266 transitions. [2021-11-20 07:42:01,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-11-20 07:42:01,406 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:42:01,407 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:42:01,439 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a635ba8b-be54-49ec-9a1b-04d20f1f047f/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-20 07:42:01,621 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a635ba8b-be54-49ec-9a1b-04d20f1f047f/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2021-11-20 07:42:01,621 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:42:01,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:42:01,622 INFO L85 PathProgramCache]: Analyzing trace with hash -1527536575, now seen corresponding path program 1 times [2021-11-20 07:42:01,622 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:42:01,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095381476] [2021-11-20 07:42:01,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:42:01,622 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:42:01,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:42:02,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 07:42:02,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:42:02,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:42:02,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:42:02,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-20 07:42:02,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:42:02,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:42:02,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:42:02,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-11-20 07:42:02,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:42:02,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-11-20 07:42:02,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:42:02,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-11-20 07:42:02,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:42:02,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-11-20 07:42:02,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:42:02,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-11-20 07:42:02,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:42:02,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-11-20 07:42:02,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:42:02,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-11-20 07:42:02,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:42:02,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-11-20 07:42:02,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:42:02,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-11-20 07:42:02,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:42:02,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-11-20 07:42:02,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:42:02,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-11-20 07:42:02,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:42:02,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-11-20 07:42:02,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:42:02,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-11-20 07:42:02,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:42:02,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-11-20 07:42:02,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:42:02,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-11-20 07:42:02,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:42:02,882 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 6 proven. 21 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2021-11-20 07:42:02,882 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:42:02,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095381476] [2021-11-20 07:42:02,882 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095381476] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 07:42:02,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [641233922] [2021-11-20 07:42:02,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:42:02,883 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:42:02,883 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a635ba8b-be54-49ec-9a1b-04d20f1f047f/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:42:02,885 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a635ba8b-be54-49ec-9a1b-04d20f1f047f/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:42:02,909 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a635ba8b-be54-49ec-9a1b-04d20f1f047f/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-20 07:42:03,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:42:03,414 INFO L263 TraceCheckSpWp]: Trace formula consists of 2678 conjuncts, 37 conjunts are in the unsatisfiable core [2021-11-20 07:42:03,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:42:03,664 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 13 treesize of output 9 [2021-11-20 07:42:03,670 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 13 treesize of output 9 [2021-11-20 07:42:04,172 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 29 treesize of output 21 [2021-11-20 07:42:04,175 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 18 treesize of output 10 [2021-11-20 07:42:04,449 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 103 proven. 4 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2021-11-20 07:42:04,449 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:42:05,212 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 38 treesize of output 32 [2021-11-20 07:42:05,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:42:05,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:42:05,303 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 6 proven. 18 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2021-11-20 07:42:05,303 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [641233922] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 07:42:05,303 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 07:42:05,303 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 11, 12] total 31 [2021-11-20 07:42:05,304 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340905419] [2021-11-20 07:42:05,304 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 07:42:05,305 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-11-20 07:42:05,305 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:42:05,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-11-20 07:42:05,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=856, Unknown=0, NotChecked=0, Total=930 [2021-11-20 07:42:05,307 INFO L87 Difference]: Start difference. First operand 187 states and 266 transitions. Second operand has 31 states, 27 states have (on average 4.074074074074074) internal successors, (110), 24 states have internal predecessors, (110), 14 states have call successors, (56), 7 states have call predecessors, (56), 8 states have return successors, (54), 11 states have call predecessors, (54), 13 states have call successors, (54) [2021-11-20 07:42:10,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:42:10,218 INFO L93 Difference]: Finished difference Result 495 states and 722 transitions. [2021-11-20 07:42:10,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-11-20 07:42:10,218 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 27 states have (on average 4.074074074074074) internal successors, (110), 24 states have internal predecessors, (110), 14 states have call successors, (56), 7 states have call predecessors, (56), 8 states have return successors, (54), 11 states have call predecessors, (54), 13 states have call successors, (54) Word has length 132 [2021-11-20 07:42:10,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:42:10,223 INFO L225 Difference]: With dead ends: 495 [2021-11-20 07:42:10,223 INFO L226 Difference]: Without dead ends: 288 [2021-11-20 07:42:10,226 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 346 GetRequests, 287 SyntacticMatches, 4 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 555 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=281, Invalid=2911, Unknown=0, NotChecked=0, Total=3192 [2021-11-20 07:42:10,228 INFO L933 BasicCegarLoop]: 170 mSDtfsCounter, 346 mSDsluCounter, 1574 mSDsCounter, 0 mSdLazyCounter, 3483 mSolverCounterSat, 335 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 360 SdHoareTripleChecker+Valid, 1744 SdHoareTripleChecker+Invalid, 4220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 335 IncrementalHoareTripleChecker+Valid, 3483 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 402 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2021-11-20 07:42:10,229 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [360 Valid, 1744 Invalid, 4220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [335 Valid, 3483 Invalid, 0 Unknown, 402 Unchecked, 3.6s Time] [2021-11-20 07:42:10,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2021-11-20 07:42:10,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 273. [2021-11-20 07:42:10,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 158 states have (on average 1.1962025316455696) internal successors, (189), 164 states have internal predecessors, (189), 95 states have call successors, (95), 15 states have call predecessors, (95), 19 states have return successors, (123), 93 states have call predecessors, (123), 94 states have call successors, (123) [2021-11-20 07:42:10,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 407 transitions. [2021-11-20 07:42:10,299 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 407 transitions. Word has length 132 [2021-11-20 07:42:10,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:42:10,300 INFO L470 AbstractCegarLoop]: Abstraction has 273 states and 407 transitions. [2021-11-20 07:42:10,301 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 27 states have (on average 4.074074074074074) internal successors, (110), 24 states have internal predecessors, (110), 14 states have call successors, (56), 7 states have call predecessors, (56), 8 states have return successors, (54), 11 states have call predecessors, (54), 13 states have call successors, (54) [2021-11-20 07:42:10,301 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 407 transitions. [2021-11-20 07:42:10,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-11-20 07:42:10,304 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:42:10,304 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:42:10,345 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a635ba8b-be54-49ec-9a1b-04d20f1f047f/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-20 07:42:10,533 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a635ba8b-be54-49ec-9a1b-04d20f1f047f/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:42:10,533 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:42:10,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:42:10,534 INFO L85 PathProgramCache]: Analyzing trace with hash -132654696, now seen corresponding path program 1 times [2021-11-20 07:42:10,534 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:42:10,534 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763708165] [2021-11-20 07:42:10,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:42:10,534 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:42:10,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:42:11,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 07:42:11,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:42:11,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:42:11,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:42:11,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-20 07:42:11,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:42:11,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:42:11,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:42:11,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:42:11,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:42:11,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:42:11,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:42:11,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-11-20 07:42:11,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:42:11,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-11-20 07:42:11,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:42:11,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-11-20 07:42:11,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:42:11,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-11-20 07:42:11,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:42:11,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-11-20 07:42:11,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:42:11,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-11-20 07:42:11,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:42:11,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-11-20 07:42:11,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:42:11,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-11-20 07:42:11,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:42:11,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-11-20 07:42:11,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:42:11,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-11-20 07:42:11,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:42:11,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-11-20 07:42:11,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:42:11,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-11-20 07:42:11,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:42:11,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-11-20 07:42:11,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:42:11,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-11-20 07:42:11,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:42:11,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-11-20 07:42:11,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:42:11,863 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 27 proven. 21 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2021-11-20 07:42:11,863 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:42:11,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763708165] [2021-11-20 07:42:11,863 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763708165] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 07:42:11,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [215254977] [2021-11-20 07:42:11,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:42:11,864 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:42:11,864 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a635ba8b-be54-49ec-9a1b-04d20f1f047f/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:42:11,865 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a635ba8b-be54-49ec-9a1b-04d20f1f047f/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:42:11,893 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a635ba8b-be54-49ec-9a1b-04d20f1f047f/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-20 07:42:12,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:42:12,533 INFO L263 TraceCheckSpWp]: Trace formula consists of 2709 conjuncts, 54 conjunts are in the unsatisfiable core [2021-11-20 07:42:12,540 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:42:12,551 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-11-20 07:42:12,691 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 19 treesize of output 1 [2021-11-20 07:42:13,491 INFO L354 Elim1Store]: treesize reduction 27, result has 20.6 percent of original size [2021-11-20 07:42:13,491 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 20 [2021-11-20 07:42:19,272 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 132 proven. 16 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2021-11-20 07:42:19,273 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:42:32,000 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [215254977] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 07:42:32,000 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 07:42:32,001 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 19] total 37 [2021-11-20 07:42:32,001 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478752231] [2021-11-20 07:42:32,001 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 07:42:32,002 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2021-11-20 07:42:32,003 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:42:32,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-11-20 07:42:32,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=1488, Unknown=6, NotChecked=0, Total=1640 [2021-11-20 07:42:32,005 INFO L87 Difference]: Start difference. First operand 273 states and 407 transitions. Second operand has 37 states, 34 states have (on average 3.323529411764706) internal successors, (113), 32 states have internal predecessors, (113), 15 states have call successors, (44), 10 states have call predecessors, (44), 9 states have return successors, (41), 12 states have call predecessors, (41), 13 states have call successors, (41) [2021-11-20 07:42:40,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:42:40,173 INFO L93 Difference]: Finished difference Result 785 states and 1233 transitions. [2021-11-20 07:42:40,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-11-20 07:42:40,175 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 34 states have (on average 3.323529411764706) internal successors, (113), 32 states have internal predecessors, (113), 15 states have call successors, (44), 10 states have call predecessors, (44), 9 states have return successors, (41), 12 states have call predecessors, (41), 13 states have call successors, (41) Word has length 143 [2021-11-20 07:42:40,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:42:40,182 INFO L225 Difference]: With dead ends: 785 [2021-11-20 07:42:40,183 INFO L226 Difference]: Without dead ends: 592 [2021-11-20 07:42:40,188 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 336 GetRequests, 237 SyntacticMatches, 24 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1837 ImplicationChecksByTransitivity, 18.2s TimeCoverageRelationStatistics Valid=513, Invalid=5333, Unknown=6, NotChecked=0, Total=5852 [2021-11-20 07:42:40,190 INFO L933 BasicCegarLoop]: 280 mSDtfsCounter, 482 mSDsluCounter, 2698 mSDsCounter, 0 mSdLazyCounter, 4972 mSolverCounterSat, 438 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 549 SdHoareTripleChecker+Valid, 2978 SdHoareTripleChecker+Invalid, 7218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 438 IncrementalHoareTripleChecker+Valid, 4972 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1808 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2021-11-20 07:42:40,190 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [549 Valid, 2978 Invalid, 7218 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [438 Valid, 4972 Invalid, 0 Unknown, 1808 Unchecked, 5.6s Time] [2021-11-20 07:42:40,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 592 states. [2021-11-20 07:42:40,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 592 to 462. [2021-11-20 07:42:40,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 462 states, 269 states have (on average 1.174721189591078) internal successors, (316), 276 states have internal predecessors, (316), 165 states have call successors, (165), 22 states have call predecessors, (165), 27 states have return successors, (209), 163 states have call predecessors, (209), 164 states have call successors, (209) [2021-11-20 07:42:40,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 462 states to 462 states and 690 transitions. [2021-11-20 07:42:40,269 INFO L78 Accepts]: Start accepts. Automaton has 462 states and 690 transitions. Word has length 143 [2021-11-20 07:42:40,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:42:40,270 INFO L470 AbstractCegarLoop]: Abstraction has 462 states and 690 transitions. [2021-11-20 07:42:40,271 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 34 states have (on average 3.323529411764706) internal successors, (113), 32 states have internal predecessors, (113), 15 states have call successors, (44), 10 states have call predecessors, (44), 9 states have return successors, (41), 12 states have call predecessors, (41), 13 states have call successors, (41) [2021-11-20 07:42:40,271 INFO L276 IsEmpty]: Start isEmpty. Operand 462 states and 690 transitions. [2021-11-20 07:42:40,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-11-20 07:42:40,276 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:42:40,276 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:42:40,324 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a635ba8b-be54-49ec-9a1b-04d20f1f047f/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-20 07:42:40,501 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a635ba8b-be54-49ec-9a1b-04d20f1f047f/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-11-20 07:42:40,501 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:42:40,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:42:40,502 INFO L85 PathProgramCache]: Analyzing trace with hash -845476291, now seen corresponding path program 1 times [2021-11-20 07:42:40,502 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:42:40,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648000523] [2021-11-20 07:42:40,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:42:40,503 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:42:40,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:42:40,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 07:42:40,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:42:40,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:42:40,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:42:40,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-20 07:42:40,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:42:40,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:42:40,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:42:40,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:42:40,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:42:40,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:42:40,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:42:40,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-11-20 07:42:40,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:42:40,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-11-20 07:42:40,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:42:40,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-11-20 07:42:40,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:42:40,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-11-20 07:42:40,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:42:40,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-11-20 07:42:40,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:42:40,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-11-20 07:42:40,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:42:40,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-11-20 07:42:40,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:42:40,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-11-20 07:42:40,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:42:40,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-11-20 07:42:40,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:42:41,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-11-20 07:42:41,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:42:41,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-11-20 07:42:41,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:42:41,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-11-20 07:42:41,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:42:41,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-11-20 07:42:41,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:42:41,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-11-20 07:42:41,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:42:41,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-11-20 07:42:41,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:42:41,159 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 217 trivial. 0 not checked. [2021-11-20 07:42:41,160 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:42:41,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648000523] [2021-11-20 07:42:41,160 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648000523] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:42:41,160 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:42:41,160 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-20 07:42:41,160 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360501388] [2021-11-20 07:42:41,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:42:41,161 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-20 07:42:41,161 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:42:41,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-20 07:42:41,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2021-11-20 07:42:41,162 INFO L87 Difference]: Start difference. First operand 462 states and 690 transitions. Second operand has 13 states, 12 states have (on average 4.583333333333333) internal successors, (55), 8 states have internal predecessors, (55), 2 states have call successors, (23), 5 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 1 states have call successors, (21) [2021-11-20 07:42:42,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:42:42,387 INFO L93 Difference]: Finished difference Result 488 states and 745 transitions. [2021-11-20 07:42:42,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-20 07:42:42,388 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 4.583333333333333) internal successors, (55), 8 states have internal predecessors, (55), 2 states have call successors, (23), 5 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 1 states have call successors, (21) Word has length 145 [2021-11-20 07:42:42,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:42:42,394 INFO L225 Difference]: With dead ends: 488 [2021-11-20 07:42:42,394 INFO L226 Difference]: Without dead ends: 486 [2021-11-20 07:42:42,395 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=96, Invalid=366, Unknown=0, NotChecked=0, Total=462 [2021-11-20 07:42:42,396 INFO L933 BasicCegarLoop]: 159 mSDtfsCounter, 161 mSDsluCounter, 953 mSDsCounter, 0 mSdLazyCounter, 830 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 1112 SdHoareTripleChecker+Invalid, 961 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 830 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-20 07:42:42,396 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [181 Valid, 1112 Invalid, 961 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 830 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-20 07:42:42,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 486 states. [2021-11-20 07:42:42,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 486 to 482. [2021-11-20 07:42:42,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 482 states, 282 states have (on average 1.1666666666666667) internal successors, (329), 291 states have internal predecessors, (329), 169 states have call successors, (169), 23 states have call predecessors, (169), 30 states have return successors, (241), 167 states have call predecessors, (241), 168 states have call successors, (241) [2021-11-20 07:42:42,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482 states to 482 states and 739 transitions. [2021-11-20 07:42:42,463 INFO L78 Accepts]: Start accepts. Automaton has 482 states and 739 transitions. Word has length 145 [2021-11-20 07:42:42,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:42:42,464 INFO L470 AbstractCegarLoop]: Abstraction has 482 states and 739 transitions. [2021-11-20 07:42:42,465 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 4.583333333333333) internal successors, (55), 8 states have internal predecessors, (55), 2 states have call successors, (23), 5 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 1 states have call successors, (21) [2021-11-20 07:42:42,465 INFO L276 IsEmpty]: Start isEmpty. Operand 482 states and 739 transitions. [2021-11-20 07:42:42,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-11-20 07:42:42,469 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:42:42,470 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:42:42,470 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-20 07:42:42,470 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:42:42,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:42:42,471 INFO L85 PathProgramCache]: Analyzing trace with hash -144411713, now seen corresponding path program 1 times [2021-11-20 07:42:42,471 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:42:42,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960625958] [2021-11-20 07:42:42,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:42:42,472 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:42:42,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:42:42,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 07:42:42,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:42:42,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:42:42,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:42:42,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-20 07:42:42,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:42:42,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:42:42,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:42:42,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:42:42,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:42:42,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:42:42,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:42:42,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-11-20 07:42:42,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:42:42,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-11-20 07:42:42,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:42:42,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-11-20 07:42:42,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:42:42,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-11-20 07:42:42,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:42:42,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-11-20 07:42:42,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:42:42,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-11-20 07:42:42,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:42:42,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-11-20 07:42:42,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:42:42,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-11-20 07:42:42,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:42:42,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-11-20 07:42:42,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:42:42,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-11-20 07:42:42,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:42:42,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-11-20 07:42:42,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:42:42,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-11-20 07:42:42,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:42:42,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-11-20 07:42:42,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:42:42,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-11-20 07:42:42,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:42:42,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-11-20 07:42:42,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:42:43,185 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 217 trivial. 0 not checked. [2021-11-20 07:42:43,186 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:42:43,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960625958] [2021-11-20 07:42:43,186 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960625958] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:42:43,186 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:42:43,186 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-11-20 07:42:43,186 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500081617] [2021-11-20 07:42:43,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:42:43,187 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-20 07:42:43,187 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:42:43,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-20 07:42:43,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2021-11-20 07:42:43,188 INFO L87 Difference]: Start difference. First operand 482 states and 739 transitions. Second operand has 16 states, 15 states have (on average 3.6666666666666665) internal successors, (55), 11 states have internal predecessors, (55), 2 states have call successors, (23), 5 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 1 states have call successors, (21) [2021-11-20 07:42:44,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:42:44,986 INFO L93 Difference]: Finished difference Result 499 states and 782 transitions. [2021-11-20 07:42:44,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-20 07:42:44,987 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 3.6666666666666665) internal successors, (55), 11 states have internal predecessors, (55), 2 states have call successors, (23), 5 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 1 states have call successors, (21) Word has length 145 [2021-11-20 07:42:44,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:42:44,993 INFO L225 Difference]: With dead ends: 499 [2021-11-20 07:42:44,997 INFO L226 Difference]: Without dead ends: 497 [2021-11-20 07:42:44,998 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=159, Invalid=653, Unknown=0, NotChecked=0, Total=812 [2021-11-20 07:42:44,999 INFO L933 BasicCegarLoop]: 163 mSDtfsCounter, 110 mSDsluCounter, 1130 mSDsCounter, 0 mSdLazyCounter, 1226 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 1293 SdHoareTripleChecker+Invalid, 1299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 1226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-20 07:42:45,000 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [130 Valid, 1293 Invalid, 1299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 1226 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-11-20 07:42:45,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 497 states. [2021-11-20 07:42:45,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 497 to 474. [2021-11-20 07:42:45,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 474 states, 276 states have (on average 1.1702898550724639) internal successors, (323), 284 states have internal predecessors, (323), 168 states have call successors, (168), 23 states have call predecessors, (168), 29 states have return successors, (237), 166 states have call predecessors, (237), 167 states have call successors, (237) [2021-11-20 07:42:45,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 474 states to 474 states and 728 transitions. [2021-11-20 07:42:45,117 INFO L78 Accepts]: Start accepts. Automaton has 474 states and 728 transitions. Word has length 145 [2021-11-20 07:42:45,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:42:45,118 INFO L470 AbstractCegarLoop]: Abstraction has 474 states and 728 transitions. [2021-11-20 07:42:45,118 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 3.6666666666666665) internal successors, (55), 11 states have internal predecessors, (55), 2 states have call successors, (23), 5 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 1 states have call successors, (21) [2021-11-20 07:42:45,119 INFO L276 IsEmpty]: Start isEmpty. Operand 474 states and 728 transitions. [2021-11-20 07:42:45,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-11-20 07:42:45,123 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:42:45,123 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:42:45,124 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-20 07:42:45,124 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:42:45,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:42:45,125 INFO L85 PathProgramCache]: Analyzing trace with hash -1764210556, now seen corresponding path program 1 times [2021-11-20 07:42:45,125 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:42:45,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374911027] [2021-11-20 07:42:45,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:42:45,126 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:42:45,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:42:45,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 07:42:45,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:42:45,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:42:45,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:42:45,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-20 07:42:45,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:42:45,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:42:45,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:42:45,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:42:45,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:42:45,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:42:45,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:42:45,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-11-20 07:42:45,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:42:45,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-11-20 07:42:45,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:42:45,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-11-20 07:42:45,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:42:45,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-11-20 07:42:45,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:42:45,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-11-20 07:42:45,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:42:45,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-11-20 07:42:45,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:42:45,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-20 07:42:45,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:42:45,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-11-20 07:42:45,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:42:45,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-11-20 07:42:45,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:42:45,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-11-20 07:42:45,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:42:45,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-11-20 07:42:45,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:42:45,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-11-20 07:42:45,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:42:45,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-11-20 07:42:45,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:42:45,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-11-20 07:42:45,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:42:45,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-11-20 07:42:45,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:42:45,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-11-20 07:42:45,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:42:45,852 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 19 proven. 24 refuted. 0 times theorem prover too weak. 230 trivial. 0 not checked. [2021-11-20 07:42:45,852 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:42:45,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374911027] [2021-11-20 07:42:45,853 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374911027] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 07:42:45,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1069943448] [2021-11-20 07:42:45,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:42:45,854 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:42:45,854 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a635ba8b-be54-49ec-9a1b-04d20f1f047f/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:42:45,857 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a635ba8b-be54-49ec-9a1b-04d20f1f047f/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:42:45,881 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a635ba8b-be54-49ec-9a1b-04d20f1f047f/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-20 07:42:46,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:42:46,402 INFO L263 TraceCheckSpWp]: Trace formula consists of 2744 conjuncts, 31 conjunts are in the unsatisfiable core [2021-11-20 07:42:46,408 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:42:46,516 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 19 treesize of output 1 [2021-11-20 07:42:47,141 INFO L354 Elim1Store]: treesize reduction 82, result has 23.4 percent of original size [2021-11-20 07:42:47,141 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 30 [2021-11-20 07:42:47,345 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-20 07:42:47,345 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 18 [2021-11-20 07:42:47,678 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 160 proven. 12 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2021-11-20 07:42:47,678 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:42:48,342 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1069943448] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 07:42:48,342 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 07:42:48,343 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14] total 24 [2021-11-20 07:42:48,343 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189553514] [2021-11-20 07:42:48,343 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 07:42:48,344 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-11-20 07:42:48,344 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:42:48,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-11-20 07:42:48,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=690, Unknown=0, NotChecked=0, Total=756 [2021-11-20 07:42:48,346 INFO L87 Difference]: Start difference. First operand 474 states and 728 transitions. Second operand has 24 states, 22 states have (on average 4.909090909090909) internal successors, (108), 20 states have internal predecessors, (108), 9 states have call successors, (46), 7 states have call predecessors, (46), 8 states have return successors, (43), 8 states have call predecessors, (43), 9 states have call successors, (43) [2021-11-20 07:42:51,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:42:51,196 INFO L93 Difference]: Finished difference Result 789 states and 1215 transitions. [2021-11-20 07:42:51,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-20 07:42:51,197 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 22 states have (on average 4.909090909090909) internal successors, (108), 20 states have internal predecessors, (108), 9 states have call successors, (46), 7 states have call predecessors, (46), 8 states have return successors, (43), 8 states have call predecessors, (43), 9 states have call successors, (43) Word has length 154 [2021-11-20 07:42:51,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:42:51,205 INFO L225 Difference]: With dead ends: 789 [2021-11-20 07:42:51,206 INFO L226 Difference]: Without dead ends: 476 [2021-11-20 07:42:51,215 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 327 GetRequests, 272 SyntacticMatches, 7 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 323 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=281, Invalid=2169, Unknown=0, NotChecked=0, Total=2450 [2021-11-20 07:42:51,216 INFO L933 BasicCegarLoop]: 144 mSDtfsCounter, 275 mSDsluCounter, 1429 mSDsCounter, 0 mSdLazyCounter, 1990 mSolverCounterSat, 222 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 312 SdHoareTripleChecker+Valid, 1573 SdHoareTripleChecker+Invalid, 2636 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 222 IncrementalHoareTripleChecker+Valid, 1990 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 424 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-11-20 07:42:51,216 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [312 Valid, 1573 Invalid, 2636 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [222 Valid, 1990 Invalid, 0 Unknown, 424 Unchecked, 1.8s Time] [2021-11-20 07:42:51,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476 states. [2021-11-20 07:42:51,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476 to 474. [2021-11-20 07:42:51,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 474 states, 276 states have (on average 1.1702898550724639) internal successors, (323), 284 states have internal predecessors, (323), 168 states have call successors, (168), 23 states have call predecessors, (168), 29 states have return successors, (232), 166 states have call predecessors, (232), 167 states have call successors, (232) [2021-11-20 07:42:51,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 474 states to 474 states and 723 transitions. [2021-11-20 07:42:51,291 INFO L78 Accepts]: Start accepts. Automaton has 474 states and 723 transitions. Word has length 154 [2021-11-20 07:42:51,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:42:51,291 INFO L470 AbstractCegarLoop]: Abstraction has 474 states and 723 transitions. [2021-11-20 07:42:51,292 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 22 states have (on average 4.909090909090909) internal successors, (108), 20 states have internal predecessors, (108), 9 states have call successors, (46), 7 states have call predecessors, (46), 8 states have return successors, (43), 8 states have call predecessors, (43), 9 states have call successors, (43) [2021-11-20 07:42:51,292 INFO L276 IsEmpty]: Start isEmpty. Operand 474 states and 723 transitions. [2021-11-20 07:42:51,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2021-11-20 07:42:51,296 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:42:51,297 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 5, 5, 5, 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, 1, 1, 1, 1, 1] [2021-11-20 07:42:51,349 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a635ba8b-be54-49ec-9a1b-04d20f1f047f/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-20 07:42:51,525 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a635ba8b-be54-49ec-9a1b-04d20f1f047f/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:42:51,525 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:42:51,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:42:51,526 INFO L85 PathProgramCache]: Analyzing trace with hash -386866604, now seen corresponding path program 1 times [2021-11-20 07:42:51,526 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:42:51,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801269154] [2021-11-20 07:42:51,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:42:51,526 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:42:51,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:42:51,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 07:42:51,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:42:51,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:42:51,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:42:51,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-20 07:42:51,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:42:51,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:42:51,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:42:51,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:42:51,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:42:51,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:42:51,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:42:51,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-11-20 07:42:51,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:42:51,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-11-20 07:42:51,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:42:51,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-11-20 07:42:51,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:42:51,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-11-20 07:42:51,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:42:51,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-11-20 07:42:51,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:42:51,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-11-20 07:42:51,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:42:51,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-11-20 07:42:51,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:42:51,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-11-20 07:42:51,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:42:51,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-11-20 07:42:51,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:42:51,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-11-20 07:42:51,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:42:51,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-11-20 07:42:51,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:42:52,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-11-20 07:42:52,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:42:52,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-11-20 07:42:52,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:42:52,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-11-20 07:42:52,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:42:52,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-11-20 07:42:52,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:42:52,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-11-20 07:42:52,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:42:52,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-11-20 07:42:52,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:42:52,133 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 241 trivial. 0 not checked. [2021-11-20 07:42:52,134 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:42:52,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801269154] [2021-11-20 07:42:52,134 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801269154] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:42:52,134 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:42:52,135 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-20 07:42:52,135 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102198386] [2021-11-20 07:42:52,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:42:52,136 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-20 07:42:52,136 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:42:52,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-20 07:42:52,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-20 07:42:52,137 INFO L87 Difference]: Start difference. First operand 474 states and 723 transitions. Second operand has 11 states, 10 states have (on average 5.3) internal successors, (53), 6 states have internal predecessors, (53), 2 states have call successors, (25), 5 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 1 states have call successors, (23) [2021-11-20 07:42:53,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:42:53,163 INFO L93 Difference]: Finished difference Result 492 states and 746 transitions. [2021-11-20 07:42:53,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-20 07:42:53,164 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 5.3) internal successors, (53), 6 states have internal predecessors, (53), 2 states have call successors, (25), 5 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 1 states have call successors, (23) Word has length 153 [2021-11-20 07:42:53,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:42:53,170 INFO L225 Difference]: With dead ends: 492 [2021-11-20 07:42:53,170 INFO L226 Difference]: Without dead ends: 490 [2021-11-20 07:42:53,171 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2021-11-20 07:42:53,172 INFO L933 BasicCegarLoop]: 162 mSDtfsCounter, 86 mSDsluCounter, 741 mSDsCounter, 0 mSdLazyCounter, 697 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 903 SdHoareTripleChecker+Invalid, 754 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 697 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-20 07:42:53,173 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [106 Valid, 903 Invalid, 754 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 697 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-20 07:42:53,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 490 states. [2021-11-20 07:42:53,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 490 to 484. [2021-11-20 07:42:53,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 484 states, 279 states have (on average 1.168458781362007) internal successors, (326), 287 states have internal predecessors, (326), 174 states have call successors, (174), 24 states have call predecessors, (174), 30 states have return successors, (238), 172 states have call predecessors, (238), 173 states have call successors, (238) [2021-11-20 07:42:53,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 484 states to 484 states and 738 transitions. [2021-11-20 07:42:53,241 INFO L78 Accepts]: Start accepts. Automaton has 484 states and 738 transitions. Word has length 153 [2021-11-20 07:42:53,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:42:53,242 INFO L470 AbstractCegarLoop]: Abstraction has 484 states and 738 transitions. [2021-11-20 07:42:53,243 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 5.3) internal successors, (53), 6 states have internal predecessors, (53), 2 states have call successors, (25), 5 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 1 states have call successors, (23) [2021-11-20 07:42:53,243 INFO L276 IsEmpty]: Start isEmpty. Operand 484 states and 738 transitions. [2021-11-20 07:42:53,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-11-20 07:42:53,247 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:42:53,247 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 4, 4, 4, 4, 4, 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] [2021-11-20 07:42:53,248 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-20 07:42:53,248 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:42:53,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:42:53,249 INFO L85 PathProgramCache]: Analyzing trace with hash 1759754407, now seen corresponding path program 1 times [2021-11-20 07:42:53,249 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:42:53,249 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863558011] [2021-11-20 07:42:53,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:42:53,250 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:42:53,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:42:53,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 07:42:53,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:42:53,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:42:53,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:42:53,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-20 07:42:53,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:42:53,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:42:53,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:42:53,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:42:53,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:42:53,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:42:53,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:42:53,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-11-20 07:42:53,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:42:53,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-11-20 07:42:53,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:42:53,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-11-20 07:42:53,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:42:53,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-11-20 07:42:53,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:42:53,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-11-20 07:42:53,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:42:53,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-20 07:42:53,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:42:53,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-11-20 07:42:53,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:42:53,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-11-20 07:42:53,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:42:53,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-11-20 07:42:53,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:42:53,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-11-20 07:42:53,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:42:53,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-11-20 07:42:53,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:42:53,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-11-20 07:42:53,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:42:53,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-11-20 07:42:53,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:42:53,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-11-20 07:42:53,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:42:53,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-11-20 07:42:53,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:42:53,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-11-20 07:42:53,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:42:53,984 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 5 proven. 14 refuted. 0 times theorem prover too weak. 254 trivial. 0 not checked. [2021-11-20 07:42:53,984 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:42:53,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863558011] [2021-11-20 07:42:53,984 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863558011] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 07:42:53,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1852252565] [2021-11-20 07:42:53,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:42:53,985 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:42:53,986 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a635ba8b-be54-49ec-9a1b-04d20f1f047f/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:42:53,989 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a635ba8b-be54-49ec-9a1b-04d20f1f047f/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:42:54,013 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a635ba8b-be54-49ec-9a1b-04d20f1f047f/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-20 07:42:54,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:42:54,566 INFO L263 TraceCheckSpWp]: Trace formula consists of 2749 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-20 07:42:54,571 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:42:55,093 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 148 proven. 0 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2021-11-20 07:42:55,093 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 07:42:55,093 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1852252565] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:42:55,093 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 07:42:55,093 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 10 [2021-11-20 07:42:55,094 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141238391] [2021-11-20 07:42:55,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:42:55,094 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 07:42:55,095 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:42:55,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 07:42:55,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-11-20 07:42:55,096 INFO L87 Difference]: Start difference. First operand 484 states and 738 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-11-20 07:42:55,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:42:55,429 INFO L93 Difference]: Finished difference Result 904 states and 1420 transitions. [2021-11-20 07:42:55,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 07:42:55,430 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 156 [2021-11-20 07:42:55,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:42:55,436 INFO L225 Difference]: With dead ends: 904 [2021-11-20 07:42:55,436 INFO L226 Difference]: Without dead ends: 484 [2021-11-20 07:42:55,441 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 196 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-11-20 07:42:55,442 INFO L933 BasicCegarLoop]: 201 mSDtfsCounter, 17 mSDsluCounter, 493 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 694 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 38 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 07:42:55,442 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 694 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 72 Invalid, 0 Unknown, 38 Unchecked, 0.2s Time] [2021-11-20 07:42:55,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 484 states. [2021-11-20 07:42:55,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 484 to 484. [2021-11-20 07:42:55,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 484 states, 279 states have (on average 1.1612903225806452) internal successors, (324), 287 states have internal predecessors, (324), 174 states have call successors, (174), 24 states have call predecessors, (174), 30 states have return successors, (238), 172 states have call predecessors, (238), 173 states have call successors, (238) [2021-11-20 07:42:55,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 484 states to 484 states and 736 transitions. [2021-11-20 07:42:55,515 INFO L78 Accepts]: Start accepts. Automaton has 484 states and 736 transitions. Word has length 156 [2021-11-20 07:42:55,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:42:55,516 INFO L470 AbstractCegarLoop]: Abstraction has 484 states and 736 transitions. [2021-11-20 07:42:55,516 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-11-20 07:42:55,517 INFO L276 IsEmpty]: Start isEmpty. Operand 484 states and 736 transitions. [2021-11-20 07:42:55,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-11-20 07:42:55,521 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:42:55,521 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 4, 4, 4, 4, 4, 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] [2021-11-20 07:42:55,571 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a635ba8b-be54-49ec-9a1b-04d20f1f047f/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-20 07:42:55,749 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a635ba8b-be54-49ec-9a1b-04d20f1f047f/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-11-20 07:42:55,749 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:42:55,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:42:55,750 INFO L85 PathProgramCache]: Analyzing trace with hash 1267128233, now seen corresponding path program 1 times [2021-11-20 07:42:55,750 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:42:55,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820078904] [2021-11-20 07:42:55,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:42:55,750 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:42:56,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:42:56,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 07:42:56,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:42:56,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:42:56,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:42:56,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-20 07:42:56,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:42:56,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:42:56,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:42:56,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:42:56,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:42:56,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:42:56,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:42:56,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-11-20 07:42:56,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:42:56,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-11-20 07:42:56,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:42:56,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-11-20 07:42:56,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:42:56,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-11-20 07:42:56,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:42:56,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-11-20 07:42:56,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:42:57,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-20 07:42:57,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:42:57,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-11-20 07:42:57,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:42:57,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-11-20 07:42:57,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:42:57,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-11-20 07:42:57,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:42:57,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-11-20 07:42:57,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:42:57,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-11-20 07:42:57,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:42:57,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-11-20 07:42:57,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:42:57,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-11-20 07:42:57,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:42:57,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-11-20 07:42:57,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:42:57,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-11-20 07:42:57,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:42:57,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-11-20 07:42:57,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:42:57,954 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 6 proven. 19 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2021-11-20 07:42:57,954 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:42:57,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820078904] [2021-11-20 07:42:57,955 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820078904] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 07:42:57,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [169481952] [2021-11-20 07:42:57,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:42:57,956 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:42:57,956 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a635ba8b-be54-49ec-9a1b-04d20f1f047f/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:42:57,957 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a635ba8b-be54-49ec-9a1b-04d20f1f047f/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:42:57,977 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a635ba8b-be54-49ec-9a1b-04d20f1f047f/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-20 07:42:58,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:42:58,570 INFO L263 TraceCheckSpWp]: Trace formula consists of 2754 conjuncts, 29 conjunts are in the unsatisfiable core [2021-11-20 07:42:58,577 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:42:58,585 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-11-20 07:42:58,744 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 19 treesize of output 1 [2021-11-20 07:42:59,777 INFO L354 Elim1Store]: treesize reduction 92, result has 14.0 percent of original size [2021-11-20 07:42:59,778 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 40 treesize of output 24 [2021-11-20 07:42:59,918 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-20 07:42:59,918 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 16 [2021-11-20 07:43:00,320 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 164 proven. 8 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2021-11-20 07:43:00,320 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:43:02,599 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_3 Int) (|ULTIMATE.start_aws_byte_cursor_compare_lexical_harness_~#rhs~0#1.offset| Int)) (= (mod (select (select (store |c_#memory_int| |c_ULTIMATE.start_aws_byte_cursor_compare_lexical_harness_~#rhs~0#1.base| (store (store (select |c_#memory_int| |c_ULTIMATE.start_aws_byte_cursor_compare_lexical_harness_~#rhs~0#1.base|) |ULTIMATE.start_aws_byte_cursor_compare_lexical_harness_~#rhs~0#1.offset| (select (select |c_#memory_int| |c_ULTIMATE.start_aws_byte_cursor_compare_lexical_harness_~#lhs~0#1.base|) |c_ULTIMATE.start_aws_byte_cursor_compare_lexical_harness_~#lhs~0#1.offset|)) (+ 8 |ULTIMATE.start_aws_byte_cursor_compare_lexical_harness_~#rhs~0#1.offset|) v_DerPreprocessor_3)) |c_ULTIMATE.start_aws_byte_cursor_compare_lexical_harness_~#lhs~0#1.base|) |c_ULTIMATE.start_aws_byte_cursor_compare_lexical_harness_~#lhs~0#1.offset|) 18446744073709551616) 0)) is different from false [2021-11-20 07:43:02,626 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [169481952] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 07:43:02,626 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 07:43:02,627 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 13] total 36 [2021-11-20 07:43:02,627 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123798546] [2021-11-20 07:43:02,627 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 07:43:02,628 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2021-11-20 07:43:02,629 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:43:02,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-11-20 07:43:02,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=1309, Unknown=1, NotChecked=72, Total=1482 [2021-11-20 07:43:02,631 INFO L87 Difference]: Start difference. First operand 484 states and 736 transitions. Second operand has 36 states, 32 states have (on average 3.71875) internal successors, (119), 31 states have internal predecessors, (119), 14 states have call successors, (47), 7 states have call predecessors, (47), 10 states have return successors, (44), 12 states have call predecessors, (44), 13 states have call successors, (44) [2021-11-20 07:43:12,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:43:12,237 INFO L93 Difference]: Finished difference Result 796 states and 1212 transitions. [2021-11-20 07:43:12,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-11-20 07:43:12,242 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 32 states have (on average 3.71875) internal successors, (119), 31 states have internal predecessors, (119), 14 states have call successors, (47), 7 states have call predecessors, (47), 10 states have return successors, (44), 12 states have call predecessors, (44), 13 states have call successors, (44) Word has length 156 [2021-11-20 07:43:12,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:43:12,250 INFO L225 Difference]: With dead ends: 796 [2021-11-20 07:43:12,250 INFO L226 Difference]: Without dead ends: 593 [2021-11-20 07:43:12,255 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 363 GetRequests, 286 SyntacticMatches, 7 SemanticMatches, 70 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 965 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=434, Invalid=4539, Unknown=1, NotChecked=138, Total=5112 [2021-11-20 07:43:12,256 INFO L933 BasicCegarLoop]: 198 mSDtfsCounter, 239 mSDsluCounter, 2047 mSDsCounter, 0 mSdLazyCounter, 6414 mSolverCounterSat, 190 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 259 SdHoareTripleChecker+Valid, 2245 SdHoareTripleChecker+Invalid, 7232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 190 IncrementalHoareTripleChecker+Valid, 6414 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 628 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2021-11-20 07:43:12,257 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [259 Valid, 2245 Invalid, 7232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [190 Valid, 6414 Invalid, 0 Unknown, 628 Unchecked, 6.9s Time] [2021-11-20 07:43:12,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states. [2021-11-20 07:43:12,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 580. [2021-11-20 07:43:12,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 580 states, 334 states have (on average 1.1736526946107784) internal successors, (392), 341 states have internal predecessors, (392), 211 states have call successors, (211), 29 states have call predecessors, (211), 34 states have return successors, (277), 209 states have call predecessors, (277), 210 states have call successors, (277) [2021-11-20 07:43:12,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 580 states to 580 states and 880 transitions. [2021-11-20 07:43:12,343 INFO L78 Accepts]: Start accepts. Automaton has 580 states and 880 transitions. Word has length 156 [2021-11-20 07:43:12,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:43:12,343 INFO L470 AbstractCegarLoop]: Abstraction has 580 states and 880 transitions. [2021-11-20 07:43:12,344 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 32 states have (on average 3.71875) internal successors, (119), 31 states have internal predecessors, (119), 14 states have call successors, (47), 7 states have call predecessors, (47), 10 states have return successors, (44), 12 states have call predecessors, (44), 13 states have call successors, (44) [2021-11-20 07:43:12,344 INFO L276 IsEmpty]: Start isEmpty. Operand 580 states and 880 transitions. [2021-11-20 07:43:12,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-11-20 07:43:12,350 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:43:12,350 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 5, 5, 5, 5, 5, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:43:12,394 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a635ba8b-be54-49ec-9a1b-04d20f1f047f/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-20 07:43:12,565 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a635ba8b-be54-49ec-9a1b-04d20f1f047f/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-11-20 07:43:12,565 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:43:12,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:43:12,566 INFO L85 PathProgramCache]: Analyzing trace with hash 1021216476, now seen corresponding path program 1 times [2021-11-20 07:43:12,566 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:43:12,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572191650] [2021-11-20 07:43:12,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:43:12,566 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:43:12,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:43:12,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 07:43:12,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:43:13,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:43:13,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:43:13,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-20 07:43:13,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:43:13,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:43:13,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:43:13,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:43:13,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:43:13,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:43:13,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:43:13,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-11-20 07:43:13,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:43:13,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-11-20 07:43:13,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:43:13,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-11-20 07:43:13,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:43:13,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-11-20 07:43:13,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:43:13,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-11-20 07:43:13,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:43:13,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-11-20 07:43:13,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:43:13,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-11-20 07:43:13,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:43:13,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-11-20 07:43:13,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:43:13,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-11-20 07:43:13,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:43:13,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-11-20 07:43:13,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:43:13,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-11-20 07:43:13,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:43:13,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-11-20 07:43:13,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:43:13,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-11-20 07:43:13,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:43:13,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-11-20 07:43:13,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:43:13,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-11-20 07:43:13,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:43:13,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-11-20 07:43:13,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:43:13,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-11-20 07:43:13,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:43:13,571 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 20 proven. 23 refuted. 0 times theorem prover too weak. 216 trivial. 0 not checked. [2021-11-20 07:43:13,571 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:43:13,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572191650] [2021-11-20 07:43:13,572 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572191650] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 07:43:13,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [267338019] [2021-11-20 07:43:13,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:43:13,572 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:43:13,572 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a635ba8b-be54-49ec-9a1b-04d20f1f047f/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:43:13,577 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a635ba8b-be54-49ec-9a1b-04d20f1f047f/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:43:13,583 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a635ba8b-be54-49ec-9a1b-04d20f1f047f/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-20 07:43:14,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:43:14,104 INFO L263 TraceCheckSpWp]: Trace formula consists of 2741 conjuncts, 44 conjunts are in the unsatisfiable core [2021-11-20 07:43:14,110 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:43:14,338 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 18 treesize of output 14 [2021-11-20 07:43:15,037 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 26 treesize of output 22 [2021-11-20 07:43:15,040 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 22 treesize of output 14 [2021-11-20 07:43:17,705 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 87 proven. 76 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2021-11-20 07:43:17,705 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:43:18,686 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 40 treesize of output 34 [2021-11-20 07:43:18,821 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 233 trivial. 0 not checked. [2021-11-20 07:43:18,821 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [267338019] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-20 07:43:18,821 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-20 07:43:18,822 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [16, 19] total 39 [2021-11-20 07:43:18,822 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010380256] [2021-11-20 07:43:18,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:43:18,823 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-20 07:43:18,823 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:43:18,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-20 07:43:18,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=1361, Unknown=0, NotChecked=0, Total=1482 [2021-11-20 07:43:18,825 INFO L87 Difference]: Start difference. First operand 580 states and 880 transitions. Second operand has 16 states, 16 states have (on average 3.6875) internal successors, (59), 14 states have internal predecessors, (59), 6 states have call successors, (25), 4 states have call predecessors, (25), 5 states have return successors, (23), 7 states have call predecessors, (23), 5 states have call successors, (23) [2021-11-20 07:43:20,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:43:20,113 INFO L93 Difference]: Finished difference Result 1242 states and 1920 transitions. [2021-11-20 07:43:20,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-20 07:43:20,114 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.6875) internal successors, (59), 14 states have internal predecessors, (59), 6 states have call successors, (25), 4 states have call predecessors, (25), 5 states have return successors, (23), 7 states have call predecessors, (23), 5 states have call successors, (23) Word has length 157 [2021-11-20 07:43:20,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:43:20,122 INFO L225 Difference]: With dead ends: 1242 [2021-11-20 07:43:20,122 INFO L226 Difference]: Without dead ends: 693 [2021-11-20 07:43:20,129 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 380 GetRequests, 309 SyntacticMatches, 28 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 708 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=157, Invalid=1823, Unknown=0, NotChecked=0, Total=1980 [2021-11-20 07:43:20,130 INFO L933 BasicCegarLoop]: 187 mSDtfsCounter, 99 mSDsluCounter, 1361 mSDsCounter, 0 mSdLazyCounter, 1098 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 1548 SdHoareTripleChecker+Invalid, 1331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 1098 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 213 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-20 07:43:20,131 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [118 Valid, 1548 Invalid, 1331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 1098 Invalid, 0 Unknown, 213 Unchecked, 1.0s Time] [2021-11-20 07:43:20,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 693 states. [2021-11-20 07:43:20,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 693 to 674. [2021-11-20 07:43:20,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 674 states, 386 states have (on average 1.1761658031088082) internal successors, (454), 394 states have internal predecessors, (454), 250 states have call successors, (250), 31 states have call predecessors, (250), 37 states have return successors, (352), 248 states have call predecessors, (352), 249 states have call successors, (352) [2021-11-20 07:43:20,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 674 states to 674 states and 1056 transitions. [2021-11-20 07:43:20,226 INFO L78 Accepts]: Start accepts. Automaton has 674 states and 1056 transitions. Word has length 157 [2021-11-20 07:43:20,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:43:20,226 INFO L470 AbstractCegarLoop]: Abstraction has 674 states and 1056 transitions. [2021-11-20 07:43:20,227 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.6875) internal successors, (59), 14 states have internal predecessors, (59), 6 states have call successors, (25), 4 states have call predecessors, (25), 5 states have return successors, (23), 7 states have call predecessors, (23), 5 states have call successors, (23) [2021-11-20 07:43:20,227 INFO L276 IsEmpty]: Start isEmpty. Operand 674 states and 1056 transitions. [2021-11-20 07:43:20,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-11-20 07:43:20,240 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:43:20,241 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 5, 5, 5, 5, 5, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:43:20,293 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a635ba8b-be54-49ec-9a1b-04d20f1f047f/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-20 07:43:20,465 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a635ba8b-be54-49ec-9a1b-04d20f1f047f/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-11-20 07:43:20,465 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:43:20,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:43:20,465 INFO L85 PathProgramCache]: Analyzing trace with hash 1279381914, now seen corresponding path program 1 times [2021-11-20 07:43:20,466 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:43:20,466 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506962657] [2021-11-20 07:43:20,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:43:20,466 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:43:20,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:43:20,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 07:43:20,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:43:20,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:43:20,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:43:20,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-20 07:43:20,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:43:20,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:43:20,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:43:20,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:43:20,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:43:20,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:43:20,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:43:20,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-11-20 07:43:20,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:43:20,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-11-20 07:43:20,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:43:20,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-11-20 07:43:20,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:43:20,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-11-20 07:43:20,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:43:20,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-11-20 07:43:20,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:43:20,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-11-20 07:43:20,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:43:20,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-11-20 07:43:20,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:43:20,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-11-20 07:43:20,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:43:20,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-11-20 07:43:20,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:43:20,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-11-20 07:43:20,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:43:20,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-11-20 07:43:20,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:43:20,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-11-20 07:43:20,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:43:20,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-11-20 07:43:20,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:43:20,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-11-20 07:43:20,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:43:20,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-11-20 07:43:20,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:43:20,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-11-20 07:43:20,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:43:20,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-11-20 07:43:20,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:43:20,963 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 237 trivial. 0 not checked. [2021-11-20 07:43:20,963 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:43:20,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506962657] [2021-11-20 07:43:20,963 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506962657] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:43:20,964 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:43:20,964 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 07:43:20,964 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361145872] [2021-11-20 07:43:20,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:43:20,965 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 07:43:20,965 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:43:20,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 07:43:20,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-20 07:43:20,967 INFO L87 Difference]: Start difference. First operand 674 states and 1056 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (25), 5 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 1 states have call successors, (23) [2021-11-20 07:43:21,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:43:21,618 INFO L93 Difference]: Finished difference Result 1301 states and 2092 transitions. [2021-11-20 07:43:21,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 07:43:21,629 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (25), 5 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 1 states have call successors, (23) Word has length 157 [2021-11-20 07:43:21,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:43:21,638 INFO L225 Difference]: With dead ends: 1301 [2021-11-20 07:43:21,638 INFO L226 Difference]: Without dead ends: 660 [2021-11-20 07:43:21,646 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-20 07:43:21,647 INFO L933 BasicCegarLoop]: 158 mSDtfsCounter, 137 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 328 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 387 SdHoareTripleChecker+Invalid, 440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-20 07:43:21,647 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [153 Valid, 387 Invalid, 440 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 328 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-20 07:43:21,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 660 states. [2021-11-20 07:43:21,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 660 to 660. [2021-11-20 07:43:21,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 660 states, 374 states have (on average 1.1711229946524064) internal successors, (438), 380 states have internal predecessors, (438), 250 states have call successors, (250), 31 states have call predecessors, (250), 35 states have return successors, (322), 248 states have call predecessors, (322), 249 states have call successors, (322) [2021-11-20 07:43:21,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 660 states to 660 states and 1010 transitions. [2021-11-20 07:43:21,735 INFO L78 Accepts]: Start accepts. Automaton has 660 states and 1010 transitions. Word has length 157 [2021-11-20 07:43:21,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:43:21,736 INFO L470 AbstractCegarLoop]: Abstraction has 660 states and 1010 transitions. [2021-11-20 07:43:21,737 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (25), 5 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 1 states have call successors, (23) [2021-11-20 07:43:21,737 INFO L276 IsEmpty]: Start isEmpty. Operand 660 states and 1010 transitions. [2021-11-20 07:43:21,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-11-20 07:43:21,742 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:43:21,743 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 5, 5, 5, 5, 5, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:43:21,743 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-20 07:43:21,743 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:43:21,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:43:21,744 INFO L85 PathProgramCache]: Analyzing trace with hash 1258471427, now seen corresponding path program 1 times [2021-11-20 07:43:21,744 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:43:21,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925774767] [2021-11-20 07:43:21,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:43:21,745 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:43:21,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:43:21,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 07:43:21,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:43:21,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:43:21,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:43:21,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-20 07:43:22,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:43:22,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:43:22,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:43:22,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:43:22,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:43:22,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:43:22,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:43:22,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-11-20 07:43:22,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:43:22,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-11-20 07:43:22,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:43:22,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-11-20 07:43:22,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:43:22,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-11-20 07:43:22,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:43:22,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-11-20 07:43:22,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:43:22,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-11-20 07:43:22,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:43:22,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-11-20 07:43:22,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:43:22,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-11-20 07:43:22,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:43:22,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-11-20 07:43:22,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:43:22,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-11-20 07:43:22,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:43:22,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-11-20 07:43:22,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:43:22,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-11-20 07:43:22,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:43:22,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-11-20 07:43:22,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:43:22,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-11-20 07:43:22,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:43:22,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-11-20 07:43:22,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:43:22,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-11-20 07:43:22,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:43:22,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-11-20 07:43:22,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:43:22,407 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 241 trivial. 0 not checked. [2021-11-20 07:43:22,408 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:43:22,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925774767] [2021-11-20 07:43:22,408 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925774767] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:43:22,408 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:43:22,408 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-11-20 07:43:22,408 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252599643] [2021-11-20 07:43:22,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:43:22,409 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-20 07:43:22,409 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:43:22,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-20 07:43:22,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2021-11-20 07:43:22,410 INFO L87 Difference]: Start difference. First operand 660 states and 1010 transitions. Second operand has 16 states, 15 states have (on average 3.933333333333333) internal successors, (59), 11 states have internal predecessors, (59), 2 states have call successors, (25), 5 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 1 states have call successors, (23) [2021-11-20 07:43:24,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:43:24,164 INFO L93 Difference]: Finished difference Result 675 states and 1028 transitions. [2021-11-20 07:43:24,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-20 07:43:24,165 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 3.933333333333333) internal successors, (59), 11 states have internal predecessors, (59), 2 states have call successors, (25), 5 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 1 states have call successors, (23) Word has length 159 [2021-11-20 07:43:24,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:43:24,173 INFO L225 Difference]: With dead ends: 675 [2021-11-20 07:43:24,173 INFO L226 Difference]: Without dead ends: 673 [2021-11-20 07:43:24,175 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=159, Invalid=653, Unknown=0, NotChecked=0, Total=812 [2021-11-20 07:43:24,176 INFO L933 BasicCegarLoop]: 163 mSDtfsCounter, 99 mSDsluCounter, 1119 mSDsCounter, 0 mSdLazyCounter, 1235 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 1282 SdHoareTripleChecker+Invalid, 1306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 1235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-11-20 07:43:24,176 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [118 Valid, 1282 Invalid, 1306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 1235 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-11-20 07:43:24,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 673 states. [2021-11-20 07:43:24,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 673 to 668. [2021-11-20 07:43:24,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 668 states, 377 states have (on average 1.169761273209549) internal successors, (441), 383 states have internal predecessors, (441), 254 states have call successors, (254), 32 states have call predecessors, (254), 36 states have return successors, (326), 252 states have call predecessors, (326), 253 states have call successors, (326) [2021-11-20 07:43:24,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 668 states to 668 states and 1021 transitions. [2021-11-20 07:43:24,262 INFO L78 Accepts]: Start accepts. Automaton has 668 states and 1021 transitions. Word has length 159 [2021-11-20 07:43:24,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:43:24,263 INFO L470 AbstractCegarLoop]: Abstraction has 668 states and 1021 transitions. [2021-11-20 07:43:24,263 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 3.933333333333333) internal successors, (59), 11 states have internal predecessors, (59), 2 states have call successors, (25), 5 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 1 states have call successors, (23) [2021-11-20 07:43:24,264 INFO L276 IsEmpty]: Start isEmpty. Operand 668 states and 1021 transitions. [2021-11-20 07:43:24,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2021-11-20 07:43:24,269 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:43:24,269 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:43:24,270 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-20 07:43:24,270 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:43:24,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:43:24,271 INFO L85 PathProgramCache]: Analyzing trace with hash 813187740, now seen corresponding path program 2 times [2021-11-20 07:43:24,271 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:43:24,271 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132399810] [2021-11-20 07:43:24,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:43:24,271 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:43:24,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:43:25,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 07:43:25,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:43:25,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:43:25,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:43:25,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-20 07:43:25,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:43:25,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:43:25,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:43:25,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:43:25,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:43:25,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:43:25,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:43:25,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-11-20 07:43:25,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:43:25,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-11-20 07:43:25,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:43:25,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-11-20 07:43:25,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:43:25,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-11-20 07:43:25,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:43:25,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-11-20 07:43:25,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:43:25,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-11-20 07:43:25,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:43:25,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-20 07:43:25,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:43:25,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-11-20 07:43:25,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:43:25,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-11-20 07:43:25,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:43:25,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-11-20 07:43:25,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:43:25,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-11-20 07:43:25,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:43:25,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-11-20 07:43:25,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:43:25,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-11-20 07:43:25,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:43:25,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-11-20 07:43:25,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:43:25,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-11-20 07:43:25,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:43:25,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-11-20 07:43:25,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:43:25,926 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 7 proven. 35 refuted. 0 times theorem prover too weak. 241 trivial. 0 not checked. [2021-11-20 07:43:25,927 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:43:25,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132399810] [2021-11-20 07:43:25,927 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1132399810] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 07:43:25,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [219431477] [2021-11-20 07:43:25,928 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-20 07:43:25,928 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:43:25,928 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a635ba8b-be54-49ec-9a1b-04d20f1f047f/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:43:25,929 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a635ba8b-be54-49ec-9a1b-04d20f1f047f/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:43:25,951 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a635ba8b-be54-49ec-9a1b-04d20f1f047f/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-20 07:43:26,569 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-20 07:43:26,570 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 07:43:26,582 INFO L263 TraceCheckSpWp]: Trace formula consists of 2776 conjuncts, 45 conjunts are in the unsatisfiable core [2021-11-20 07:43:26,587 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:43:37,017 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 137 proven. 9 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2021-11-20 07:43:37,017 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:43:38,545 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 47 proven. 9 refuted. 0 times theorem prover too weak. 227 trivial. 0 not checked. [2021-11-20 07:43:38,545 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [219431477] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 07:43:38,545 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 07:43:38,545 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 17, 15] total 53 [2021-11-20 07:43:38,545 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156783726] [2021-11-20 07:43:38,546 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 07:43:38,547 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2021-11-20 07:43:38,547 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:43:38,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2021-11-20 07:43:38,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=2577, Unknown=1, NotChecked=0, Total=2756 [2021-11-20 07:43:38,549 INFO L87 Difference]: Start difference. First operand 668 states and 1021 transitions. Second operand has 53 states, 49 states have (on average 3.142857142857143) internal successors, (154), 46 states have internal predecessors, (154), 17 states have call successors, (67), 9 states have call predecessors, (67), 12 states have return successors, (62), 15 states have call predecessors, (62), 15 states have call successors, (62) [2021-11-20 07:43:55,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:43:55,135 INFO L93 Difference]: Finished difference Result 1294 states and 2001 transitions. [2021-11-20 07:43:55,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-11-20 07:43:55,136 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 49 states have (on average 3.142857142857143) internal successors, (154), 46 states have internal predecessors, (154), 17 states have call successors, (67), 9 states have call predecessors, (67), 12 states have return successors, (62), 15 states have call predecessors, (62), 15 states have call successors, (62) Word has length 162 [2021-11-20 07:43:55,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:43:55,146 INFO L225 Difference]: With dead ends: 1294 [2021-11-20 07:43:55,146 INFO L226 Difference]: Without dead ends: 953 [2021-11-20 07:43:55,155 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 459 GetRequests, 344 SyntacticMatches, 7 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2855 ImplicationChecksByTransitivity, 21.3s TimeCoverageRelationStatistics Valid=1212, Invalid=10774, Unknown=4, NotChecked=0, Total=11990 [2021-11-20 07:43:55,156 INFO L933 BasicCegarLoop]: 201 mSDtfsCounter, 381 mSDsluCounter, 3423 mSDsCounter, 0 mSdLazyCounter, 6704 mSolverCounterSat, 454 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 384 SdHoareTripleChecker+Valid, 3624 SdHoareTripleChecker+Invalid, 8299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 454 IncrementalHoareTripleChecker+Valid, 6704 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1141 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2021-11-20 07:43:55,157 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [384 Valid, 3624 Invalid, 8299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [454 Valid, 6704 Invalid, 0 Unknown, 1141 Unchecked, 5.9s Time] [2021-11-20 07:43:55,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 953 states. [2021-11-20 07:43:55,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 953 to 761. [2021-11-20 07:43:55,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 761 states, 432 states have (on average 1.1666666666666667) internal successors, (504), 436 states have internal predecessors, (504), 290 states have call successors, (290), 38 states have call predecessors, (290), 38 states have return successors, (370), 286 states have call predecessors, (370), 289 states have call successors, (370) [2021-11-20 07:43:55,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 761 states to 761 states and 1164 transitions. [2021-11-20 07:43:55,270 INFO L78 Accepts]: Start accepts. Automaton has 761 states and 1164 transitions. Word has length 162 [2021-11-20 07:43:55,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:43:55,271 INFO L470 AbstractCegarLoop]: Abstraction has 761 states and 1164 transitions. [2021-11-20 07:43:55,272 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 49 states have (on average 3.142857142857143) internal successors, (154), 46 states have internal predecessors, (154), 17 states have call successors, (67), 9 states have call predecessors, (67), 12 states have return successors, (62), 15 states have call predecessors, (62), 15 states have call successors, (62) [2021-11-20 07:43:55,272 INFO L276 IsEmpty]: Start isEmpty. Operand 761 states and 1164 transitions. [2021-11-20 07:43:55,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2021-11-20 07:43:55,278 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:43:55,278 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 5, 5, 5, 5, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:43:55,324 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a635ba8b-be54-49ec-9a1b-04d20f1f047f/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-20 07:43:55,505 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a635ba8b-be54-49ec-9a1b-04d20f1f047f/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:43:55,505 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:43:55,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:43:55,506 INFO L85 PathProgramCache]: Analyzing trace with hash 1665943078, now seen corresponding path program 1 times [2021-11-20 07:43:55,506 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:43:55,506 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939532621] [2021-11-20 07:43:55,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:43:55,506 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:43:55,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:43:55,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 07:43:55,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:43:55,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:43:55,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:43:55,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-20 07:43:55,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:43:55,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:43:55,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:43:56,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:43:56,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:43:56,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:43:56,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:43:56,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-11-20 07:43:56,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:43:56,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-11-20 07:43:56,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:43:56,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-11-20 07:43:56,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:43:56,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-11-20 07:43:56,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:43:56,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-11-20 07:43:56,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:43:56,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-11-20 07:43:56,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:43:56,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-11-20 07:43:56,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:43:56,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:43:56,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:43:56,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-20 07:43:56,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:43:56,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-11-20 07:43:56,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:43:56,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-11-20 07:43:56,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:43:56,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-11-20 07:43:56,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:43:56,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-11-20 07:43:56,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:43:56,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-11-20 07:43:56,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:43:56,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-11-20 07:43:56,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:43:56,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-11-20 07:43:56,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:43:56,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-11-20 07:43:56,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:43:56,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-11-20 07:43:56,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:43:56,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-11-20 07:43:56,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:43:56,284 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 261 trivial. 0 not checked. [2021-11-20 07:43:56,285 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:43:56,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939532621] [2021-11-20 07:43:56,285 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939532621] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:43:56,285 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:43:56,285 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 07:43:56,286 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168072964] [2021-11-20 07:43:56,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:43:56,287 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 07:43:56,287 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:43:56,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 07:43:56,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-20 07:43:56,288 INFO L87 Difference]: Start difference. First operand 761 states and 1164 transitions. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (26), 5 states have call predecessors, (26), 2 states have return successors, (25), 2 states have call predecessors, (25), 1 states have call successors, (25) [2021-11-20 07:43:56,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:43:56,948 INFO L93 Difference]: Finished difference Result 1169 states and 1785 transitions. [2021-11-20 07:43:56,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 07:43:56,949 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (26), 5 states have call predecessors, (26), 2 states have return successors, (25), 2 states have call predecessors, (25), 1 states have call successors, (25) Word has length 164 [2021-11-20 07:43:56,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:43:56,958 INFO L225 Difference]: With dead ends: 1169 [2021-11-20 07:43:56,958 INFO L226 Difference]: Without dead ends: 793 [2021-11-20 07:43:56,962 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-11-20 07:43:56,963 INFO L933 BasicCegarLoop]: 157 mSDtfsCounter, 68 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 342 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 447 SdHoareTripleChecker+Invalid, 393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-20 07:43:56,964 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [84 Valid, 447 Invalid, 393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 342 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-20 07:43:56,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 793 states. [2021-11-20 07:43:57,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 793 to 785. [2021-11-20 07:43:57,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 785 states, 451 states have (on average 1.1596452328159645) internal successors, (523), 453 states have internal predecessors, (523), 290 states have call successors, (290), 38 states have call predecessors, (290), 43 states have return successors, (377), 293 states have call predecessors, (377), 289 states have call successors, (377) [2021-11-20 07:43:57,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 785 states to 785 states and 1190 transitions. [2021-11-20 07:43:57,076 INFO L78 Accepts]: Start accepts. Automaton has 785 states and 1190 transitions. Word has length 164 [2021-11-20 07:43:57,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:43:57,077 INFO L470 AbstractCegarLoop]: Abstraction has 785 states and 1190 transitions. [2021-11-20 07:43:57,077 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (26), 5 states have call predecessors, (26), 2 states have return successors, (25), 2 states have call predecessors, (25), 1 states have call successors, (25) [2021-11-20 07:43:57,077 INFO L276 IsEmpty]: Start isEmpty. Operand 785 states and 1190 transitions. [2021-11-20 07:43:57,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-11-20 07:43:57,084 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:43:57,084 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 5, 5, 5, 5, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:43:57,084 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-20 07:43:57,085 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:43:57,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:43:57,085 INFO L85 PathProgramCache]: Analyzing trace with hash 1049417710, now seen corresponding path program 1 times [2021-11-20 07:43:57,085 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:43:57,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741537006] [2021-11-20 07:43:57,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:43:57,086 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:43:57,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:43:58,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 07:43:58,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:43:58,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:43:58,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:43:58,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-20 07:43:58,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:43:58,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:43:58,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:43:58,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:43:58,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:43:58,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:43:58,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:43:58,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-11-20 07:43:58,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:43:58,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-11-20 07:43:58,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:43:58,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-11-20 07:43:58,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:43:58,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-11-20 07:43:58,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:43:58,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-11-20 07:43:58,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:43:59,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-11-20 07:43:59,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:43:59,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-11-20 07:43:59,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:43:59,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:43:59,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:43:59,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-20 07:43:59,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:43:59,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-11-20 07:43:59,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:43:59,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-11-20 07:43:59,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:43:59,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-11-20 07:43:59,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:43:59,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-11-20 07:43:59,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:43:59,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-11-20 07:43:59,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:43:59,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-11-20 07:43:59,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:43:59,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-11-20 07:43:59,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:43:59,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-11-20 07:43:59,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:43:59,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-11-20 07:43:59,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:43:59,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-11-20 07:43:59,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:43:59,307 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 10 proven. 69 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2021-11-20 07:43:59,307 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:43:59,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741537006] [2021-11-20 07:43:59,308 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741537006] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 07:43:59,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1719457974] [2021-11-20 07:43:59,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:43:59,309 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:43:59,309 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a635ba8b-be54-49ec-9a1b-04d20f1f047f/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:43:59,310 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a635ba8b-be54-49ec-9a1b-04d20f1f047f/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:43:59,335 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a635ba8b-be54-49ec-9a1b-04d20f1f047f/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-20 07:43:59,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:43:59,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 2760 conjuncts, 84 conjunts are in the unsatisfiable core [2021-11-20 07:43:59,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:43:59,859 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-11-20 07:44:00,207 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 18 treesize of output 14 [2021-11-20 07:44:00,218 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 19 treesize of output 1 [2021-11-20 07:44:02,139 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 27 [2021-11-20 07:44:02,143 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 23 [2021-11-20 07:44:02,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:44:02,154 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 36 treesize of output 20 [2021-11-20 07:44:02,284 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 35 treesize of output 11 [2021-11-20 07:44:09,600 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-20 07:44:09,600 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 19 [2021-11-20 07:44:09,750 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 19 proven. 134 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2021-11-20 07:44:09,750 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:44:31,706 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1719457974] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 07:44:31,706 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 07:44:31,706 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 31] total 58 [2021-11-20 07:44:31,706 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794299533] [2021-11-20 07:44:31,707 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 07:44:31,707 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2021-11-20 07:44:31,708 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:44:31,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2021-11-20 07:44:31,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=346, Invalid=4200, Unknown=10, NotChecked=0, Total=4556 [2021-11-20 07:44:31,711 INFO L87 Difference]: Start difference. First operand 785 states and 1190 transitions. Second operand has 58 states, 46 states have (on average 3.0217391304347827) internal successors, (139), 47 states have internal predecessors, (139), 24 states have call successors, (52), 10 states have call predecessors, (52), 15 states have return successors, (50), 17 states have call predecessors, (50), 22 states have call successors, (50) [2021-11-20 07:44:58,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:44:58,067 INFO L93 Difference]: Finished difference Result 1095 states and 1614 transitions. [2021-11-20 07:44:58,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2021-11-20 07:44:58,068 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 46 states have (on average 3.0217391304347827) internal successors, (139), 47 states have internal predecessors, (139), 24 states have call successors, (52), 10 states have call predecessors, (52), 15 states have return successors, (50), 17 states have call predecessors, (50), 22 states have call successors, (50) Word has length 165 [2021-11-20 07:44:58,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:44:58,078 INFO L225 Difference]: With dead ends: 1095 [2021-11-20 07:44:58,079 INFO L226 Difference]: Without dead ends: 1077 [2021-11-20 07:44:58,086 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 415 GetRequests, 291 SyntacticMatches, 5 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4522 ImplicationChecksByTransitivity, 46.4s TimeCoverageRelationStatistics Valid=1098, Invalid=13404, Unknown=18, NotChecked=0, Total=14520 [2021-11-20 07:44:58,087 INFO L933 BasicCegarLoop]: 184 mSDtfsCounter, 782 mSDsluCounter, 2014 mSDsCounter, 0 mSdLazyCounter, 6749 mSolverCounterSat, 742 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 855 SdHoareTripleChecker+Valid, 2198 SdHoareTripleChecker+Invalid, 8920 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 742 IncrementalHoareTripleChecker+Valid, 6749 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1429 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2021-11-20 07:44:58,087 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [855 Valid, 2198 Invalid, 8920 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [742 Valid, 6749 Invalid, 0 Unknown, 1429 Unchecked, 7.0s Time] [2021-11-20 07:44:58,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1077 states. [2021-11-20 07:44:58,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1077 to 964. [2021-11-20 07:44:58,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 964 states, 566 states have (on average 1.1537102473498233) internal successors, (653), 566 states have internal predecessors, (653), 334 states have call successors, (334), 58 states have call predecessors, (334), 63 states have return successors, (441), 339 states have call predecessors, (441), 332 states have call successors, (441) [2021-11-20 07:44:58,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 964 states to 964 states and 1428 transitions. [2021-11-20 07:44:58,226 INFO L78 Accepts]: Start accepts. Automaton has 964 states and 1428 transitions. Word has length 165 [2021-11-20 07:44:58,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:44:58,227 INFO L470 AbstractCegarLoop]: Abstraction has 964 states and 1428 transitions. [2021-11-20 07:44:58,227 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 46 states have (on average 3.0217391304347827) internal successors, (139), 47 states have internal predecessors, (139), 24 states have call successors, (52), 10 states have call predecessors, (52), 15 states have return successors, (50), 17 states have call predecessors, (50), 22 states have call successors, (50) [2021-11-20 07:44:58,228 INFO L276 IsEmpty]: Start isEmpty. Operand 964 states and 1428 transitions. [2021-11-20 07:44:58,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2021-11-20 07:44:58,234 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:44:58,234 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 5, 5, 5, 5, 5, 5, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:44:58,284 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a635ba8b-be54-49ec-9a1b-04d20f1f047f/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-11-20 07:44:58,461 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a635ba8b-be54-49ec-9a1b-04d20f1f047f/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-11-20 07:44:58,461 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:44:58,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:44:58,462 INFO L85 PathProgramCache]: Analyzing trace with hash 906081946, now seen corresponding path program 1 times [2021-11-20 07:44:58,462 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:44:58,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129561990] [2021-11-20 07:44:58,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:44:58,462 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:44:58,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:44:58,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 07:44:58,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:44:58,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:44:58,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:44:58,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-20 07:44:58,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:44:58,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:44:58,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:44:59,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:44:59,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:44:59,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:44:59,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:44:59,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-11-20 07:44:59,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:44:59,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-11-20 07:44:59,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:44:59,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-11-20 07:44:59,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:44:59,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-11-20 07:44:59,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:44:59,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-11-20 07:44:59,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:44:59,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-11-20 07:44:59,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:44:59,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-11-20 07:44:59,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:44:59,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:44:59,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:44:59,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-20 07:44:59,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:44:59,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-11-20 07:44:59,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:44:59,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-11-20 07:44:59,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:44:59,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-11-20 07:44:59,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:44:59,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-11-20 07:44:59,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:44:59,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-11-20 07:44:59,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:44:59,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-11-20 07:44:59,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:44:59,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-11-20 07:44:59,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:44:59,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-11-20 07:44:59,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:44:59,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-11-20 07:44:59,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:44:59,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-11-20 07:44:59,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:44:59,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2021-11-20 07:44:59,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:44:59,502 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 15 proven. 21 refuted. 0 times theorem prover too weak. 239 trivial. 0 not checked. [2021-11-20 07:44:59,503 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:44:59,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129561990] [2021-11-20 07:44:59,503 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129561990] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 07:44:59,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [57382312] [2021-11-20 07:44:59,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:44:59,504 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:44:59,504 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a635ba8b-be54-49ec-9a1b-04d20f1f047f/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:44:59,505 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a635ba8b-be54-49ec-9a1b-04d20f1f047f/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:44:59,530 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a635ba8b-be54-49ec-9a1b-04d20f1f047f/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-20 07:45:00,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:45:00,069 INFO L263 TraceCheckSpWp]: Trace formula consists of 2802 conjuncts, 111 conjunts are in the unsatisfiable core [2021-11-20 07:45:00,076 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:45:00,359 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 19 treesize of output 1 [2021-11-20 07:45:00,363 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 18 treesize of output 14 [2021-11-20 07:45:01,586 INFO L354 Elim1Store]: treesize reduction 82, result has 23.4 percent of original size [2021-11-20 07:45:01,586 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 30 [2021-11-20 07:45:01,622 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 30 treesize of output 18 [2021-11-20 07:45:01,629 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 18 treesize of output 14 [2021-11-20 07:45:24,626 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-20 07:45:24,626 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 53 treesize of output 29 [2021-11-20 07:45:24,717 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 31 proven. 127 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2021-11-20 07:45:24,717 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:45:53,597 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 61 treesize of output 49 [2021-11-20 07:45:53,751 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 132 treesize of output 126 [2021-11-20 07:45:54,450 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 12 proven. 28 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2021-11-20 07:45:54,451 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [57382312] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 07:45:54,451 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 07:45:54,451 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 28, 21] total 63 [2021-11-20 07:45:54,452 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447304101] [2021-11-20 07:45:54,452 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 07:45:54,453 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2021-11-20 07:45:54,453 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:45:54,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2021-11-20 07:45:54,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=256, Invalid=3643, Unknown=7, NotChecked=0, Total=3906 [2021-11-20 07:45:54,455 INFO L87 Difference]: Start difference. First operand 964 states and 1428 transitions. Second operand has 63 states, 53 states have (on average 3.169811320754717) internal successors, (168), 53 states have internal predecessors, (168), 22 states have call successors, (66), 13 states have call predecessors, (66), 17 states have return successors, (63), 15 states have call predecessors, (63), 20 states have call successors, (63) [2021-11-20 07:46:05,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:46:05,592 INFO L93 Difference]: Finished difference Result 1592 states and 2377 transitions. [2021-11-20 07:46:05,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2021-11-20 07:46:05,593 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 53 states have (on average 3.169811320754717) internal successors, (168), 53 states have internal predecessors, (168), 22 states have call successors, (66), 13 states have call predecessors, (66), 17 states have return successors, (63), 15 states have call predecessors, (63), 20 states have call successors, (63) Word has length 172 [2021-11-20 07:46:05,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:46:05,606 INFO L225 Difference]: With dead ends: 1592 [2021-11-20 07:46:05,607 INFO L226 Difference]: Without dead ends: 1277 [2021-11-20 07:46:05,612 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 481 GetRequests, 348 SyntacticMatches, 11 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4457 ImplicationChecksByTransitivity, 23.9s TimeCoverageRelationStatistics Valid=1143, Invalid=14102, Unknown=7, NotChecked=0, Total=15252 [2021-11-20 07:46:05,612 INFO L933 BasicCegarLoop]: 178 mSDtfsCounter, 417 mSDsluCounter, 2142 mSDsCounter, 0 mSdLazyCounter, 5389 mSolverCounterSat, 559 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 434 SdHoareTripleChecker+Valid, 2320 SdHoareTripleChecker+Invalid, 8226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 559 IncrementalHoareTripleChecker+Valid, 5389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2278 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2021-11-20 07:46:05,613 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [434 Valid, 2320 Invalid, 8226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [559 Valid, 5389 Invalid, 0 Unknown, 2278 Unchecked, 5.7s Time] [2021-11-20 07:46:05,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1277 states. [2021-11-20 07:46:05,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1277 to 1088. [2021-11-20 07:46:05,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1088 states, 625 states have (on average 1.1376) internal successors, (711), 632 states have internal predecessors, (711), 395 states have call successors, (395), 68 states have call predecessors, (395), 67 states have return successors, (529), 387 states have call predecessors, (529), 393 states have call successors, (529) [2021-11-20 07:46:05,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1088 states to 1088 states and 1635 transitions. [2021-11-20 07:46:05,822 INFO L78 Accepts]: Start accepts. Automaton has 1088 states and 1635 transitions. Word has length 172 [2021-11-20 07:46:05,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:46:05,823 INFO L470 AbstractCegarLoop]: Abstraction has 1088 states and 1635 transitions. [2021-11-20 07:46:05,823 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 53 states have (on average 3.169811320754717) internal successors, (168), 53 states have internal predecessors, (168), 22 states have call successors, (66), 13 states have call predecessors, (66), 17 states have return successors, (63), 15 states have call predecessors, (63), 20 states have call successors, (63) [2021-11-20 07:46:05,824 INFO L276 IsEmpty]: Start isEmpty. Operand 1088 states and 1635 transitions. [2021-11-20 07:46:05,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2021-11-20 07:46:05,830 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:46:05,831 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 13, 6, 6, 6, 6, 6, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:46:05,881 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a635ba8b-be54-49ec-9a1b-04d20f1f047f/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-11-20 07:46:06,045 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a635ba8b-be54-49ec-9a1b-04d20f1f047f/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:46:06,045 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:46:06,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:46:06,046 INFO L85 PathProgramCache]: Analyzing trace with hash -425342680, now seen corresponding path program 1 times [2021-11-20 07:46:06,046 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:46:06,046 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704163423] [2021-11-20 07:46:06,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:46:06,047 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:46:06,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:46:06,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 07:46:06,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:46:06,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:46:06,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:46:06,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-20 07:46:06,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:46:06,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:46:06,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:46:06,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:46:06,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:46:06,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:46:06,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:46:06,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-11-20 07:46:06,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:46:06,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-11-20 07:46:06,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:46:06,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-11-20 07:46:06,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:46:06,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-11-20 07:46:06,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:46:06,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-11-20 07:46:06,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:46:06,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-11-20 07:46:06,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:46:06,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-11-20 07:46:06,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:46:06,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:46:06,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:46:06,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-11-20 07:46:06,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:46:06,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-11-20 07:46:06,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:46:06,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-11-20 07:46:06,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:46:06,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-11-20 07:46:06,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:46:06,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-11-20 07:46:06,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:46:06,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-11-20 07:46:06,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:46:06,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-11-20 07:46:06,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:46:06,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-11-20 07:46:06,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:46:06,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-11-20 07:46:06,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:46:06,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-11-20 07:46:06,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:46:06,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-11-20 07:46:06,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:46:06,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2021-11-20 07:46:06,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:46:06,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-11-20 07:46:06,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:46:06,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-11-20 07:46:06,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:46:06,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-11-20 07:46:06,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:46:06,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2021-11-20 07:46:06,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:46:06,782 INFO L134 CoverageAnalysis]: Checked inductivity of 441 backedges. 14 proven. 18 refuted. 0 times theorem prover too weak. 409 trivial. 0 not checked. [2021-11-20 07:46:06,783 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:46:06,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704163423] [2021-11-20 07:46:06,783 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704163423] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 07:46:06,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [722423756] [2021-11-20 07:46:06,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:46:06,784 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:46:06,784 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a635ba8b-be54-49ec-9a1b-04d20f1f047f/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:46:06,785 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a635ba8b-be54-49ec-9a1b-04d20f1f047f/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:46:06,788 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a635ba8b-be54-49ec-9a1b-04d20f1f047f/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-11-20 07:46:07,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:46:07,220 INFO L263 TraceCheckSpWp]: Trace formula consists of 2850 conjuncts, 37 conjunts are in the unsatisfiable core [2021-11-20 07:46:07,226 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:46:07,427 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 13 treesize of output 9 [2021-11-20 07:46:07,432 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 13 treesize of output 9 [2021-11-20 07:46:07,777 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 29 treesize of output 21 [2021-11-20 07:46:07,786 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 18 treesize of output 10 [2021-11-20 07:46:08,129 INFO L134 CoverageAnalysis]: Checked inductivity of 441 backedges. 271 proven. 4 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2021-11-20 07:46:08,129 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:46:08,680 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 38 treesize of output 32 [2021-11-20 07:46:08,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:46:08,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:46:08,851 INFO L134 CoverageAnalysis]: Checked inductivity of 441 backedges. 25 proven. 18 refuted. 0 times theorem prover too weak. 398 trivial. 0 not checked. [2021-11-20 07:46:08,852 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [722423756] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 07:46:08,852 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 07:46:08,852 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 12] total 25 [2021-11-20 07:46:08,853 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398868570] [2021-11-20 07:46:08,853 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 07:46:08,854 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-11-20 07:46:08,854 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:46:08,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-11-20 07:46:08,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=542, Unknown=0, NotChecked=0, Total=600 [2021-11-20 07:46:08,855 INFO L87 Difference]: Start difference. First operand 1088 states and 1635 transitions. Second operand has 25 states, 23 states have (on average 5.434782608695652) internal successors, (125), 18 states have internal predecessors, (125), 9 states have call successors, (73), 7 states have call predecessors, (73), 7 states have return successors, (69), 8 states have call predecessors, (69), 8 states have call successors, (69) [2021-11-20 07:46:11,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:46:11,651 INFO L93 Difference]: Finished difference Result 1729 states and 2659 transitions. [2021-11-20 07:46:11,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-11-20 07:46:11,652 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 23 states have (on average 5.434782608695652) internal successors, (125), 18 states have internal predecessors, (125), 9 states have call successors, (73), 7 states have call predecessors, (73), 7 states have return successors, (69), 8 states have call predecessors, (69), 8 states have call successors, (69) Word has length 197 [2021-11-20 07:46:11,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:46:11,666 INFO L225 Difference]: With dead ends: 1729 [2021-11-20 07:46:11,666 INFO L226 Difference]: Without dead ends: 1230 [2021-11-20 07:46:11,672 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 483 GetRequests, 436 SyntacticMatches, 3 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 339 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=231, Invalid=1839, Unknown=0, NotChecked=0, Total=2070 [2021-11-20 07:46:11,673 INFO L933 BasicCegarLoop]: 168 mSDtfsCounter, 265 mSDsluCounter, 1311 mSDsCounter, 0 mSdLazyCounter, 2473 mSolverCounterSat, 193 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 312 SdHoareTripleChecker+Valid, 1479 SdHoareTripleChecker+Invalid, 3002 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 193 IncrementalHoareTripleChecker+Valid, 2473 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 336 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-11-20 07:46:11,673 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [312 Valid, 1479 Invalid, 3002 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [193 Valid, 2473 Invalid, 0 Unknown, 336 Unchecked, 2.0s Time] [2021-11-20 07:46:11,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1230 states. [2021-11-20 07:46:11,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1230 to 1073. [2021-11-20 07:46:11,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1073 states, 622 states have (on average 1.1237942122186495) internal successors, (699), 628 states have internal predecessors, (699), 383 states have call successors, (383), 69 states have call predecessors, (383), 67 states have return successors, (509), 375 states have call predecessors, (509), 381 states have call successors, (509) [2021-11-20 07:46:11,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1073 states to 1073 states and 1591 transitions. [2021-11-20 07:46:11,887 INFO L78 Accepts]: Start accepts. Automaton has 1073 states and 1591 transitions. Word has length 197 [2021-11-20 07:46:11,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:46:11,887 INFO L470 AbstractCegarLoop]: Abstraction has 1073 states and 1591 transitions. [2021-11-20 07:46:11,888 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 23 states have (on average 5.434782608695652) internal successors, (125), 18 states have internal predecessors, (125), 9 states have call successors, (73), 7 states have call predecessors, (73), 7 states have return successors, (69), 8 states have call predecessors, (69), 8 states have call successors, (69) [2021-11-20 07:46:11,888 INFO L276 IsEmpty]: Start isEmpty. Operand 1073 states and 1591 transitions. [2021-11-20 07:46:11,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2021-11-20 07:46:11,894 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:46:11,894 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 5, 5, 5, 5, 5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:46:11,940 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a635ba8b-be54-49ec-9a1b-04d20f1f047f/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2021-11-20 07:46:12,109 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a635ba8b-be54-49ec-9a1b-04d20f1f047f/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:46:12,109 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:46:12,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:46:12,109 INFO L85 PathProgramCache]: Analyzing trace with hash -2137056265, now seen corresponding path program 1 times [2021-11-20 07:46:12,110 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:46:12,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422927712] [2021-11-20 07:46:12,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:46:12,110 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:46:12,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:46:12,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 07:46:12,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:46:12,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:46:12,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:46:12,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-20 07:46:12,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:46:12,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:46:12,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:46:12,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:46:12,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:46:12,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:46:12,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:46:12,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-11-20 07:46:12,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:46:12,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-11-20 07:46:12,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:46:12,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-11-20 07:46:12,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:46:12,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-11-20 07:46:12,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:46:12,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-11-20 07:46:12,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:46:12,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-11-20 07:46:12,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:46:12,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-20 07:46:12,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:46:12,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-11-20 07:46:12,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:46:12,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-11-20 07:46:12,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:46:12,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-11-20 07:46:12,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:46:12,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-11-20 07:46:12,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:46:12,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-11-20 07:46:12,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:46:12,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-11-20 07:46:12,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:46:12,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-11-20 07:46:12,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:46:12,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-11-20 07:46:12,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:46:12,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-11-20 07:46:12,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:46:12,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-11-20 07:46:12,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:46:12,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-11-20 07:46:12,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:46:12,745 INFO L134 CoverageAnalysis]: Checked inductivity of 311 backedges. 29 proven. 21 refuted. 0 times theorem prover too weak. 261 trivial. 0 not checked. [2021-11-20 07:46:12,746 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:46:12,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422927712] [2021-11-20 07:46:12,746 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422927712] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 07:46:12,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [667349509] [2021-11-20 07:46:12,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:46:12,747 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:46:12,747 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a635ba8b-be54-49ec-9a1b-04d20f1f047f/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:46:12,748 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a635ba8b-be54-49ec-9a1b-04d20f1f047f/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:46:12,773 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a635ba8b-be54-49ec-9a1b-04d20f1f047f/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-11-20 07:46:13,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:46:13,345 INFO L263 TraceCheckSpWp]: Trace formula consists of 2796 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-20 07:46:13,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:46:13,716 INFO L134 CoverageAnalysis]: Checked inductivity of 311 backedges. 189 proven. 0 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2021-11-20 07:46:13,717 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 07:46:13,717 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [667349509] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:46:13,717 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 07:46:13,717 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [12] total 13 [2021-11-20 07:46:13,717 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380156041] [2021-11-20 07:46:13,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:46:13,718 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-20 07:46:13,718 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:46:13,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-20 07:46:13,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2021-11-20 07:46:13,719 INFO L87 Difference]: Start difference. First operand 1073 states and 1591 transitions. Second operand has 9 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 3 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2021-11-20 07:46:14,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:46:14,002 INFO L93 Difference]: Finished difference Result 1626 states and 2418 transitions. [2021-11-20 07:46:14,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-20 07:46:14,003 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 3 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) Word has length 174 [2021-11-20 07:46:14,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:46:14,056 INFO L225 Difference]: With dead ends: 1626 [2021-11-20 07:46:14,056 INFO L226 Difference]: Without dead ends: 1073 [2021-11-20 07:46:14,061 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 218 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2021-11-20 07:46:14,062 INFO L933 BasicCegarLoop]: 182 mSDtfsCounter, 10 mSDsluCounter, 1213 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 1395 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 07:46:14,062 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 1395 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 07:46:14,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1073 states. [2021-11-20 07:46:14,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1073 to 1073. [2021-11-20 07:46:14,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1073 states, 622 states have (on average 1.1237942122186495) internal successors, (699), 628 states have internal predecessors, (699), 383 states have call successors, (383), 69 states have call predecessors, (383), 67 states have return successors, (475), 375 states have call predecessors, (475), 381 states have call successors, (475) [2021-11-20 07:46:14,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1073 states to 1073 states and 1557 transitions. [2021-11-20 07:46:14,218 INFO L78 Accepts]: Start accepts. Automaton has 1073 states and 1557 transitions. Word has length 174 [2021-11-20 07:46:14,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:46:14,219 INFO L470 AbstractCegarLoop]: Abstraction has 1073 states and 1557 transitions. [2021-11-20 07:46:14,219 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 3 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2021-11-20 07:46:14,219 INFO L276 IsEmpty]: Start isEmpty. Operand 1073 states and 1557 transitions. [2021-11-20 07:46:14,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2021-11-20 07:46:14,225 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:46:14,226 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 5, 5, 5, 5, 5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:46:14,276 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a635ba8b-be54-49ec-9a1b-04d20f1f047f/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-11-20 07:46:14,446 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a635ba8b-be54-49ec-9a1b-04d20f1f047f/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:46:14,447 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:46:14,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:46:14,447 INFO L85 PathProgramCache]: Analyzing trace with hash 1475743646, now seen corresponding path program 2 times [2021-11-20 07:46:14,447 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:46:14,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785044541] [2021-11-20 07:46:14,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:46:14,448 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:46:14,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:46:15,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 07:46:15,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:46:15,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:46:15,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:46:15,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-20 07:46:15,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:46:15,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:46:15,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:46:15,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:46:15,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:46:15,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:46:15,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:46:15,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-11-20 07:46:15,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:46:15,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-11-20 07:46:15,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:46:15,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-11-20 07:46:15,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:46:15,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-11-20 07:46:15,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:46:15,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-11-20 07:46:15,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:46:15,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-11-20 07:46:15,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:46:15,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-20 07:46:15,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:46:15,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-11-20 07:46:15,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:46:15,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-11-20 07:46:15,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:46:15,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-11-20 07:46:15,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:46:15,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-11-20 07:46:15,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:46:15,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-11-20 07:46:15,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:46:15,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-11-20 07:46:15,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:46:15,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-11-20 07:46:15,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:46:15,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-11-20 07:46:15,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:46:15,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-11-20 07:46:15,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:46:15,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-11-20 07:46:15,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:46:15,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-11-20 07:46:15,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:46:15,701 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 2 proven. 37 refuted. 0 times theorem prover too weak. 274 trivial. 0 not checked. [2021-11-20 07:46:15,701 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:46:15,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785044541] [2021-11-20 07:46:15,702 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785044541] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 07:46:15,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1303456388] [2021-11-20 07:46:15,702 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-20 07:46:15,703 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:46:15,703 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a635ba8b-be54-49ec-9a1b-04d20f1f047f/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:46:15,704 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a635ba8b-be54-49ec-9a1b-04d20f1f047f/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:46:15,730 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a635ba8b-be54-49ec-9a1b-04d20f1f047f/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-11-20 07:46:16,367 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-20 07:46:16,368 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 07:46:16,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 2806 conjuncts, 62 conjunts are in the unsatisfiable core [2021-11-20 07:46:16,391 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:46:16,424 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-11-20 07:46:16,716 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 18 treesize of output 14 [2021-11-20 07:46:18,256 INFO L354 Elim1Store]: treesize reduction 27, result has 20.6 percent of original size [2021-11-20 07:46:18,256 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 21 [2021-11-20 07:46:18,267 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 27 [2021-11-20 07:46:18,271 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 23 [2021-11-20 07:46:18,367 INFO L354 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-11-20 07:46:18,367 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 43 [2021-11-20 07:46:18,869 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 173 proven. 0 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2021-11-20 07:46:18,870 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 07:46:18,870 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1303456388] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:46:18,870 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 07:46:18,870 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [19] total 38 [2021-11-20 07:46:18,870 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505323551] [2021-11-20 07:46:18,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:46:18,871 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-20 07:46:18,871 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:46:18,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-20 07:46:18,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=1283, Unknown=0, NotChecked=0, Total=1406 [2021-11-20 07:46:18,872 INFO L87 Difference]: Start difference. First operand 1073 states and 1557 transitions. Second operand has 21 states, 19 states have (on average 4.2631578947368425) internal successors, (81), 16 states have internal predecessors, (81), 7 states have call successors, (26), 5 states have call predecessors, (26), 7 states have return successors, (24), 7 states have call predecessors, (24), 7 states have call successors, (24) [2021-11-20 07:46:20,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:46:20,852 INFO L93 Difference]: Finished difference Result 1575 states and 2252 transitions. [2021-11-20 07:46:20,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-20 07:46:20,853 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 4.2631578947368425) internal successors, (81), 16 states have internal predecessors, (81), 7 states have call successors, (26), 5 states have call predecessors, (26), 7 states have return successors, (24), 7 states have call predecessors, (24), 7 states have call successors, (24) Word has length 176 [2021-11-20 07:46:20,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:46:20,864 INFO L225 Difference]: With dead ends: 1575 [2021-11-20 07:46:20,864 INFO L226 Difference]: Without dead ends: 1218 [2021-11-20 07:46:20,868 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 198 SyntacticMatches, 5 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 554 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=226, Invalid=2426, Unknown=0, NotChecked=0, Total=2652 [2021-11-20 07:46:20,869 INFO L933 BasicCegarLoop]: 170 mSDtfsCounter, 209 mSDsluCounter, 581 mSDsCounter, 0 mSdLazyCounter, 1623 mSolverCounterSat, 163 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 250 SdHoareTripleChecker+Valid, 751 SdHoareTripleChecker+Invalid, 2960 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 163 IncrementalHoareTripleChecker+Valid, 1623 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1174 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-11-20 07:46:20,869 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [250 Valid, 751 Invalid, 2960 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [163 Valid, 1623 Invalid, 0 Unknown, 1174 Unchecked, 1.4s Time] [2021-11-20 07:46:20,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1218 states. [2021-11-20 07:46:21,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1218 to 1197. [2021-11-20 07:46:21,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1197 states, 704 states have (on average 1.1235795454545454) internal successors, (791), 711 states have internal predecessors, (791), 411 states have call successors, (411), 82 states have call predecessors, (411), 81 states have return successors, (514), 403 states have call predecessors, (514), 408 states have call successors, (514) [2021-11-20 07:46:21,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1197 states to 1197 states and 1716 transitions. [2021-11-20 07:46:21,034 INFO L78 Accepts]: Start accepts. Automaton has 1197 states and 1716 transitions. Word has length 176 [2021-11-20 07:46:21,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:46:21,034 INFO L470 AbstractCegarLoop]: Abstraction has 1197 states and 1716 transitions. [2021-11-20 07:46:21,035 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 19 states have (on average 4.2631578947368425) internal successors, (81), 16 states have internal predecessors, (81), 7 states have call successors, (26), 5 states have call predecessors, (26), 7 states have return successors, (24), 7 states have call predecessors, (24), 7 states have call successors, (24) [2021-11-20 07:46:21,036 INFO L276 IsEmpty]: Start isEmpty. Operand 1197 states and 1716 transitions. [2021-11-20 07:46:21,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2021-11-20 07:46:21,042 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:46:21,042 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 5, 5, 5, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:46:21,090 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a635ba8b-be54-49ec-9a1b-04d20f1f047f/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-11-20 07:46:21,249 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a635ba8b-be54-49ec-9a1b-04d20f1f047f/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-11-20 07:46:21,249 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:46:21,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:46:21,250 INFO L85 PathProgramCache]: Analyzing trace with hash -431353651, now seen corresponding path program 1 times [2021-11-20 07:46:21,250 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:46:21,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739212104] [2021-11-20 07:46:21,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:46:21,250 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:46:21,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:46:21,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 07:46:21,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:46:21,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:46:21,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:46:21,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-20 07:46:21,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:46:21,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:46:21,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:46:21,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:46:21,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:46:21,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:46:21,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:46:21,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-11-20 07:46:21,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:46:21,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-11-20 07:46:21,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:46:21,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-11-20 07:46:21,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:46:21,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-11-20 07:46:21,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:46:21,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-11-20 07:46:21,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:46:21,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-20 07:46:21,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:46:21,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-11-20 07:46:21,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:46:21,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-20 07:46:21,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:46:21,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-11-20 07:46:21,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:46:21,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-11-20 07:46:21,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:46:21,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-11-20 07:46:21,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:46:21,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-11-20 07:46:21,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:46:21,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-11-20 07:46:21,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:46:21,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-11-20 07:46:21,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:46:21,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-11-20 07:46:21,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:46:21,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-11-20 07:46:21,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:46:21,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-11-20 07:46:21,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:46:21,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2021-11-20 07:46:21,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:46:21,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2021-11-20 07:46:21,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:46:21,963 INFO L134 CoverageAnalysis]: Checked inductivity of 350 backedges. 36 proven. 11 refuted. 0 times theorem prover too weak. 303 trivial. 0 not checked. [2021-11-20 07:46:21,964 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:46:21,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739212104] [2021-11-20 07:46:21,964 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739212104] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 07:46:21,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1463211676] [2021-11-20 07:46:21,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:46:21,964 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:46:21,965 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a635ba8b-be54-49ec-9a1b-04d20f1f047f/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:46:21,969 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a635ba8b-be54-49ec-9a1b-04d20f1f047f/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:46:21,993 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a635ba8b-be54-49ec-9a1b-04d20f1f047f/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-11-20 07:46:22,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:46:22,477 INFO L263 TraceCheckSpWp]: Trace formula consists of 2805 conjuncts, 80 conjunts are in the unsatisfiable core [2021-11-20 07:46:22,485 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:46:22,504 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-20 07:46:22,504 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 11 [2021-11-20 07:46:22,898 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 29 treesize of output 25 [2021-11-20 07:46:22,983 INFO L354 Elim1Store]: treesize reduction 68, result has 31.3 percent of original size [2021-11-20 07:46:22,983 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 34 treesize of output 51 [2021-11-20 07:46:24,788 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 56 treesize of output 52 [2021-11-20 07:46:24,791 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 52 treesize of output 32 [2021-11-20 07:46:24,890 INFO L354 Elim1Store]: treesize reduction 8, result has 65.2 percent of original size [2021-11-20 07:46:24,890 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 24 [2021-11-20 07:46:25,029 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 15 treesize of output 1 [2021-11-20 07:46:27,052 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_DerPreprocessor_7 Int) (|save_byte_from_array_~storage#1.offset| Int)) (= (store |c_old(#memory_$Pointer$.base)| |c_save_byte_from_array_#in~storage#1.base| (let ((.cse0 (+ |save_byte_from_array_~storage#1.offset| 8))) (store (store (select |c_old(#memory_$Pointer$.base)| |c_save_byte_from_array_#in~storage#1.base|) |save_byte_from_array_~storage#1.offset| v_DerPreprocessor_7) .cse0 (select (select |c_#memory_$Pointer$.base| |c_save_byte_from_array_#in~storage#1.base|) .cse0)))) |c_#memory_$Pointer$.base|)) is different from true [2021-11-20 07:46:27,088 INFO L354 Elim1Store]: treesize reduction 106, result has 13.8 percent of original size [2021-11-20 07:46:27,089 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 57 treesize of output 33 [2021-11-20 07:46:27,190 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 15 treesize of output 1 [2021-11-20 07:46:29,214 WARN L860 $PredicateComparison]: unable to prove that (exists ((|save_byte_from_array_~storage#1.base| Int) (v_DerPreprocessor_8 Int) (|save_byte_from_array_~storage#1.offset| Int)) (= (store |c_old(#memory_$Pointer$.base)| |save_byte_from_array_~storage#1.base| (let ((.cse0 (+ |save_byte_from_array_~storage#1.offset| 8))) (store (store (select |c_old(#memory_$Pointer$.base)| |save_byte_from_array_~storage#1.base|) |save_byte_from_array_~storage#1.offset| v_DerPreprocessor_8) .cse0 (select (select |c_#memory_$Pointer$.base| |save_byte_from_array_~storage#1.base|) .cse0)))) |c_#memory_$Pointer$.base|)) is different from true [2021-11-20 07:46:29,265 INFO L354 Elim1Store]: treesize reduction 89, result has 27.6 percent of original size [2021-11-20 07:46:29,265 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 43 treesize of output 42 [2021-11-20 07:46:31,460 INFO L134 CoverageAnalysis]: Checked inductivity of 350 backedges. 131 proven. 146 refuted. 0 times theorem prover too weak. 71 trivial. 2 not checked. [2021-11-20 07:46:31,461 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:46:32,543 INFO L354 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2021-11-20 07:46:32,543 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 19 [2021-11-20 07:46:33,026 INFO L134 CoverageAnalysis]: Checked inductivity of 350 backedges. 36 proven. 12 refuted. 0 times theorem prover too weak. 302 trivial. 0 not checked. [2021-11-20 07:46:33,026 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1463211676] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 07:46:33,027 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 07:46:33,027 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 35, 12] total 53 [2021-11-20 07:46:33,027 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921097408] [2021-11-20 07:46:33,027 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 07:46:33,028 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2021-11-20 07:46:33,028 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:46:33,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2021-11-20 07:46:33,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=208, Invalid=2348, Unknown=2, NotChecked=198, Total=2756 [2021-11-20 07:46:33,029 INFO L87 Difference]: Start difference. First operand 1197 states and 1716 transitions. Second operand has 53 states, 52 states have (on average 3.5) internal successors, (182), 48 states have internal predecessors, (182), 15 states have call successors, (64), 11 states have call predecessors, (64), 13 states have return successors, (58), 15 states have call predecessors, (58), 13 states have call successors, (58) [2021-11-20 07:47:25,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:47:25,016 INFO L93 Difference]: Finished difference Result 2452 states and 3598 transitions. [2021-11-20 07:47:25,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-11-20 07:47:25,017 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 52 states have (on average 3.5) internal successors, (182), 48 states have internal predecessors, (182), 15 states have call successors, (64), 11 states have call predecessors, (64), 13 states have return successors, (58), 15 states have call predecessors, (58), 13 states have call successors, (58) Word has length 177 [2021-11-20 07:47:25,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:47:25,032 INFO L225 Difference]: With dead ends: 2452 [2021-11-20 07:47:25,032 INFO L226 Difference]: Without dead ends: 2006 [2021-11-20 07:47:25,038 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 459 GetRequests, 347 SyntacticMatches, 25 SemanticMatches, 87 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 2535 ImplicationChecksByTransitivity, 53.3s TimeCoverageRelationStatistics Valid=598, Invalid=6869, Unknown=23, NotChecked=342, Total=7832 [2021-11-20 07:47:25,039 INFO L933 BasicCegarLoop]: 203 mSDtfsCounter, 597 mSDsluCounter, 1498 mSDsCounter, 0 mSdLazyCounter, 5448 mSolverCounterSat, 653 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 655 SdHoareTripleChecker+Valid, 1701 SdHoareTripleChecker+Invalid, 7927 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 653 IncrementalHoareTripleChecker+Valid, 5448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1826 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2021-11-20 07:47:25,039 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [655 Valid, 1701 Invalid, 7927 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [653 Valid, 5448 Invalid, 0 Unknown, 1826 Unchecked, 5.4s Time] [2021-11-20 07:47:25,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2006 states. [2021-11-20 07:47:25,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2006 to 1762. [2021-11-20 07:47:25,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1762 states, 1017 states have (on average 1.1111111111111112) internal successors, (1130), 1026 states have internal predecessors, (1130), 638 states have call successors, (638), 104 states have call predecessors, (638), 106 states have return successors, (789), 631 states have call predecessors, (789), 635 states have call successors, (789) [2021-11-20 07:47:25,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1762 states to 1762 states and 2557 transitions. [2021-11-20 07:47:25,338 INFO L78 Accepts]: Start accepts. Automaton has 1762 states and 2557 transitions. Word has length 177 [2021-11-20 07:47:25,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:47:25,338 INFO L470 AbstractCegarLoop]: Abstraction has 1762 states and 2557 transitions. [2021-11-20 07:47:25,338 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 52 states have (on average 3.5) internal successors, (182), 48 states have internal predecessors, (182), 15 states have call successors, (64), 11 states have call predecessors, (64), 13 states have return successors, (58), 15 states have call predecessors, (58), 13 states have call successors, (58) [2021-11-20 07:47:25,338 INFO L276 IsEmpty]: Start isEmpty. Operand 1762 states and 2557 transitions. [2021-11-20 07:47:25,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-11-20 07:47:25,346 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:47:25,346 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 5, 5, 5, 5, 5, 4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:47:25,394 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a635ba8b-be54-49ec-9a1b-04d20f1f047f/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-11-20 07:47:25,565 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a635ba8b-be54-49ec-9a1b-04d20f1f047f/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:47:25,566 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:47:25,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:47:25,566 INFO L85 PathProgramCache]: Analyzing trace with hash 478096255, now seen corresponding path program 1 times [2021-11-20 07:47:25,566 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:47:25,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429657657] [2021-11-20 07:47:25,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:47:25,567 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:47:25,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:47:25,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 07:47:25,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:47:26,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:47:26,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:47:26,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-20 07:47:26,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:47:26,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:47:26,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:47:26,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:47:26,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:47:26,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:47:26,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:47:26,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-11-20 07:47:26,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:47:26,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-11-20 07:47:26,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:47:26,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-11-20 07:47:26,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:47:26,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-11-20 07:47:26,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:47:26,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-11-20 07:47:26,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:47:26,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-20 07:47:26,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:47:26,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-11-20 07:47:26,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:47:26,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-11-20 07:47:26,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:47:26,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:47:26,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:47:26,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-20 07:47:26,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:47:26,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-11-20 07:47:26,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:47:26,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-11-20 07:47:26,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:47:26,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-11-20 07:47:26,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:47:26,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-11-20 07:47:26,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:47:26,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-11-20 07:47:26,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:47:26,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-11-20 07:47:26,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:47:26,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-11-20 07:47:26,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:47:26,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-11-20 07:47:26,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:47:26,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-11-20 07:47:26,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:47:26,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-11-20 07:47:26,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:47:26,966 INFO L134 CoverageAnalysis]: Checked inductivity of 305 backedges. 24 proven. 24 refuted. 0 times theorem prover too weak. 257 trivial. 0 not checked. [2021-11-20 07:47:26,966 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:47:26,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429657657] [2021-11-20 07:47:26,967 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429657657] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 07:47:26,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [268545468] [2021-11-20 07:47:26,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:47:26,967 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:47:26,968 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a635ba8b-be54-49ec-9a1b-04d20f1f047f/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:47:26,973 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a635ba8b-be54-49ec-9a1b-04d20f1f047f/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:47:26,974 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a635ba8b-be54-49ec-9a1b-04d20f1f047f/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-11-20 07:47:27,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:47:27,348 INFO L263 TraceCheckSpWp]: Trace formula consists of 2803 conjuncts, 76 conjunts are in the unsatisfiable core [2021-11-20 07:47:27,357 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:47:27,405 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-20 07:47:27,406 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 11 [2021-11-20 07:47:27,926 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 19 treesize of output 1 [2021-11-20 07:47:27,930 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 24 treesize of output 20 [2021-11-20 07:47:27,997 INFO L354 Elim1Store]: treesize reduction 60, result has 15.5 percent of original size [2021-11-20 07:47:27,998 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 23 treesize of output 28 [2021-11-20 07:47:29,657 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 76 treesize of output 72 [2021-11-20 07:47:29,660 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 72 treesize of output 60 [2021-11-20 07:47:29,690 INFO L354 Elim1Store]: treesize reduction 82, result has 23.4 percent of original size [2021-11-20 07:47:29,690 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 63 treesize of output 57 [2021-11-20 07:47:31,014 INFO L354 Elim1Store]: treesize reduction 48, result has 28.4 percent of original size [2021-11-20 07:47:31,015 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 48 treesize of output 52 [2021-11-20 07:47:33,621 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 27 treesize of output 23 [2021-11-20 07:47:33,625 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 15 treesize of output 1 [2021-11-20 07:48:18,521 INFO L354 Elim1Store]: treesize reduction 106, result has 13.8 percent of original size [2021-11-20 07:48:18,521 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 178 treesize of output 160 [2021-11-20 07:48:19,228 INFO L354 Elim1Store]: treesize reduction 1292, result has 23.5 percent of original size [2021-11-20 07:48:19,229 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 8 new quantified variables, introduced 26 case distinctions, treesize of input 238 treesize of output 572 [2021-11-20 07:48:28,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:48:28,360 INFO L354 Elim1Store]: treesize reduction 52, result has 45.3 percent of original size [2021-11-20 07:48:28,361 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 217 treesize of output 229 [2021-11-20 07:48:28,538 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-20 07:48:28,538 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 24 [2021-11-20 07:48:28,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:48:28,753 INFO L354 Elim1Store]: treesize reduction 75, result has 21.1 percent of original size [2021-11-20 07:48:28,753 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 91 treesize of output 81 [2021-11-20 07:48:28,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:48:29,002 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-20 07:48:29,002 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 33 [2021-11-20 07:48:35,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:48:35,964 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-20 07:48:35,964 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 131 treesize of output 85 [2021-11-20 07:48:36,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:48:36,548 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-20 07:48:36,549 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 100 treesize of output 66 [2021-11-20 07:48:38,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:48:38,952 INFO L354 Elim1Store]: treesize reduction 73, result has 23.2 percent of original size [2021-11-20 07:48:38,952 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 117 treesize of output 87 [2021-11-20 07:48:39,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:48:39,758 INFO L354 Elim1Store]: treesize reduction 94, result has 1.1 percent of original size [2021-11-20 07:48:39,759 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 86 treesize of output 1 [2021-11-20 07:48:41,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:48:41,751 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-20 07:48:41,751 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 88 treesize of output 48 [2021-11-20 07:48:41,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:48:41,981 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-20 07:48:41,981 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 37 [2021-11-20 07:48:42,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:48:42,798 INFO L354 Elim1Store]: treesize reduction 177, result has 19.5 percent of original size [2021-11-20 07:48:42,798 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 4 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 307 treesize of output 280 [2021-11-20 07:48:44,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:48:44,713 INFO L354 Elim1Store]: treesize reduction 52, result has 45.3 percent of original size [2021-11-20 07:48:44,713 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 144 treesize of output 132 [2021-11-20 07:48:44,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:48:44,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:48:44,842 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 07:48:44,881 INFO L354 Elim1Store]: treesize reduction 49, result has 29.0 percent of original size [2021-11-20 07:48:44,881 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 4 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 245 treesize of output 186 [2021-11-20 07:48:46,034 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 07:48:46,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:48:46,110 INFO L354 Elim1Store]: treesize reduction 12, result has 83.1 percent of original size [2021-11-20 07:48:46,111 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 4 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 300 treesize of output 273 [2021-11-20 07:48:49,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:48:49,379 INFO L354 Elim1Store]: treesize reduction 108, result has 34.5 percent of original size [2021-11-20 07:48:49,379 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 4 disjoint index pairs (out of 15 index pairs), introduced 7 new quantified variables, introduced 10 case distinctions, treesize of input 225 treesize of output 208 [2021-11-20 07:48:50,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:48:50,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:48:50,906 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 07:48:50,916 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-20 07:48:50,917 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 192 treesize of output 144 [2021-11-20 07:48:51,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:48:51,157 INFO L354 Elim1Store]: treesize reduction 52, result has 45.3 percent of original size [2021-11-20 07:48:51,158 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 129 treesize of output 123 [2021-11-20 07:48:51,247 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 07:48:51,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:48:51,256 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-20 07:48:51,256 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 177 treesize of output 129 [2021-11-20 07:48:51,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:48:51,412 INFO L354 Elim1Store]: treesize reduction 52, result has 45.3 percent of original size [2021-11-20 07:48:51,412 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 90 treesize of output 102 [2021-11-20 07:48:51,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:48:51,582 INFO L354 Elim1Store]: treesize reduction 52, result has 45.3 percent of original size [2021-11-20 07:48:51,583 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 122 treesize of output 128 [2021-11-20 07:49:43,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:49:43,605 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-20 07:49:43,605 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 79 treesize of output 49 [2021-11-20 07:49:43,652 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-20 07:49:43,652 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 35 [2021-11-20 07:49:43,681 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-20 07:49:43,681 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 66 treesize of output 42 [2021-11-20 07:49:44,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:49:44,113 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-20 07:49:44,113 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 68 treesize of output 38 [2021-11-20 07:49:44,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:49:44,164 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-20 07:49:44,164 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 68 treesize of output 38 [2021-11-20 07:49:48,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:49:48,682 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 140 treesize of output 104 [2021-11-20 07:49:49,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:49:49,087 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 38 [2021-11-20 07:49:49,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:49:49,183 INFO L354 Elim1Store]: treesize reduction 82, result has 1.2 percent of original size [2021-11-20 07:49:49,183 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 118 treesize of output 68 [2021-11-20 07:49:49,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:49:49,207 INFO L354 Elim1Store]: treesize reduction 86, result has 1.1 percent of original size [2021-11-20 07:49:49,207 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 233 treesize of output 190 [2021-11-20 07:49:49,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:49:49,516 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 44 [2021-11-20 07:49:49,555 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 35 [2021-11-20 07:49:49,591 INFO L354 Elim1Store]: treesize reduction 63, result has 1.6 percent of original size [2021-11-20 07:49:49,592 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 121 treesize of output 88 [2021-11-20 07:49:49,878 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 35 [2021-11-20 07:49:49,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:49:49,907 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 42 [2021-11-20 07:49:49,940 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 28 [2021-11-20 07:49:50,666 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-11-20 07:49:50,666 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 82 treesize of output 46 [2021-11-20 07:49:50,727 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-11-20 07:49:50,728 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 67 treesize of output 37 [2021-11-20 07:49:50,864 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-11-20 07:49:50,865 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 68 treesize of output 46 [2021-11-20 07:49:50,987 INFO L354 Elim1Store]: treesize reduction 47, result has 23.0 percent of original size [2021-11-20 07:49:50,987 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 5 case distinctions, treesize of input 126 treesize of output 97 [2021-11-20 07:49:53,273 INFO L354 Elim1Store]: treesize reduction 22, result has 4.3 percent of original size [2021-11-20 07:49:53,273 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 78 treesize of output 44 [2021-11-20 07:49:53,300 INFO L354 Elim1Store]: treesize reduction 22, result has 4.3 percent of original size [2021-11-20 07:49:53,300 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 69 treesize of output 47 [2021-11-20 07:50:07,888 INFO L354 Elim1Store]: treesize reduction 306, result has 63.1 percent of original size [2021-11-20 07:50:07,889 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 13 select indices, 13 select index equivalence classes, 0 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 78 case distinctions, treesize of input 384 treesize of output 754 [2021-11-20 07:50:07,910 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 754 treesize of output 736