./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/forester-heap/sll-01-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c95c1a45-6d0a-4ade-acc5-70e84cc88d62/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c95c1a45-6d0a-4ade-acc5-70e84cc88d62/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c95c1a45-6d0a-4ade-acc5-70e84cc88d62/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c95c1a45-6d0a-4ade-acc5-70e84cc88d62/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/forester-heap/sll-01-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c95c1a45-6d0a-4ade-acc5-70e84cc88d62/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c95c1a45-6d0a-4ade-acc5-70e84cc88d62/bin/uautomizer-ug76WZFUDN --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ba1a5c8c8cff607fde50280cfe0e0975858a4c6ed38f8443d26bb1773b66a31d --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 12:32:10,350 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 12:32:10,353 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 12:32:10,405 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 12:32:10,405 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 12:32:10,407 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 12:32:10,409 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 12:32:10,417 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 12:32:10,420 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 12:32:10,428 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 12:32:10,430 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 12:32:10,432 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 12:32:10,433 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 12:32:10,436 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 12:32:10,440 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 12:32:10,442 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 12:32:10,444 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 12:32:10,446 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 12:32:10,449 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 12:32:10,457 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 12:32:10,459 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 12:32:10,462 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 12:32:10,465 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 12:32:10,466 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 12:32:10,479 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 12:32:10,480 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 12:32:10,480 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 12:32:10,483 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 12:32:10,484 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 12:32:10,485 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 12:32:10,485 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 12:32:10,486 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 12:32:10,489 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 12:32:10,490 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 12:32:10,492 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 12:32:10,492 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 12:32:10,493 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 12:32:10,493 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 12:32:10,494 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 12:32:10,495 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 12:32:10,496 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 12:32:10,497 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c95c1a45-6d0a-4ade-acc5-70e84cc88d62/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-20 12:32:10,548 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 12:32:10,549 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 12:32:10,549 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 12:32:10,550 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 12:32:10,551 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 12:32:10,551 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 12:32:10,552 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 12:32:10,553 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 12:32:10,553 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 12:32:10,553 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 12:32:10,555 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 12:32:10,555 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 12:32:10,555 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 12:32:10,556 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 12:32:10,556 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 12:32:10,556 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 12:32:10,557 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 12:32:10,557 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 12:32:10,557 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 12:32:10,558 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 12:32:10,558 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 12:32:10,558 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 12:32:10,559 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 12:32:10,559 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 12:32:10,559 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:32:10,560 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 12:32:10,560 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 12:32:10,560 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 12:32:10,561 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 12:32:10,561 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 12:32:10,561 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 12:32:10,562 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 12:32:10,562 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 12:32:10,562 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_c95c1a45-6d0a-4ade-acc5-70e84cc88d62/bin/uautomizer-ug76WZFUDN/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c95c1a45-6d0a-4ade-acc5-70e84cc88d62/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ba1a5c8c8cff607fde50280cfe0e0975858a4c6ed38f8443d26bb1773b66a31d [2022-11-20 12:32:10,904 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 12:32:10,953 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 12:32:10,956 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 12:32:10,958 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 12:32:10,959 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 12:32:10,960 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c95c1a45-6d0a-4ade-acc5-70e84cc88d62/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/forester-heap/sll-01-1.i [2022-11-20 12:32:14,621 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 12:32:14,967 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 12:32:14,968 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c95c1a45-6d0a-4ade-acc5-70e84cc88d62/sv-benchmarks/c/forester-heap/sll-01-1.i [2022-11-20 12:32:14,986 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c95c1a45-6d0a-4ade-acc5-70e84cc88d62/bin/uautomizer-ug76WZFUDN/data/52ece6e84/ec15b83ddf1c4474926fef30c1d39432/FLAG6704445ba [2022-11-20 12:32:15,007 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c95c1a45-6d0a-4ade-acc5-70e84cc88d62/bin/uautomizer-ug76WZFUDN/data/52ece6e84/ec15b83ddf1c4474926fef30c1d39432 [2022-11-20 12:32:15,012 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 12:32:15,014 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 12:32:15,018 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 12:32:15,018 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 12:32:15,023 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 12:32:15,024 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:32:15" (1/1) ... [2022-11-20 12:32:15,025 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3bc58221 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:32:15, skipping insertion in model container [2022-11-20 12:32:15,026 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:32:15" (1/1) ... [2022-11-20 12:32:15,035 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 12:32:15,101 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 12:32:15,431 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c95c1a45-6d0a-4ade-acc5-70e84cc88d62/sv-benchmarks/c/forester-heap/sll-01-1.i[22034,22047] [2022-11-20 12:32:15,441 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c95c1a45-6d0a-4ade-acc5-70e84cc88d62/sv-benchmarks/c/forester-heap/sll-01-1.i[22307,22320] [2022-11-20 12:32:15,443 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c95c1a45-6d0a-4ade-acc5-70e84cc88d62/sv-benchmarks/c/forester-heap/sll-01-1.i[22516,22529] [2022-11-20 12:32:15,445 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c95c1a45-6d0a-4ade-acc5-70e84cc88d62/sv-benchmarks/c/forester-heap/sll-01-1.i[22586,22599] [2022-11-20 12:32:15,448 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c95c1a45-6d0a-4ade-acc5-70e84cc88d62/sv-benchmarks/c/forester-heap/sll-01-1.i[22853,22866] [2022-11-20 12:32:15,450 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c95c1a45-6d0a-4ade-acc5-70e84cc88d62/sv-benchmarks/c/forester-heap/sll-01-1.i[22961,22974] [2022-11-20 12:32:15,452 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c95c1a45-6d0a-4ade-acc5-70e84cc88d62/sv-benchmarks/c/forester-heap/sll-01-1.i[23192,23205] [2022-11-20 12:32:15,453 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c95c1a45-6d0a-4ade-acc5-70e84cc88d62/sv-benchmarks/c/forester-heap/sll-01-1.i[23272,23285] [2022-11-20 12:32:15,454 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c95c1a45-6d0a-4ade-acc5-70e84cc88d62/sv-benchmarks/c/forester-heap/sll-01-1.i[23351,23364] [2022-11-20 12:32:15,455 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c95c1a45-6d0a-4ade-acc5-70e84cc88d62/sv-benchmarks/c/forester-heap/sll-01-1.i[23441,23454] [2022-11-20 12:32:15,457 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c95c1a45-6d0a-4ade-acc5-70e84cc88d62/sv-benchmarks/c/forester-heap/sll-01-1.i[23619,23632] [2022-11-20 12:32:15,458 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c95c1a45-6d0a-4ade-acc5-70e84cc88d62/sv-benchmarks/c/forester-heap/sll-01-1.i[23697,23710] [2022-11-20 12:32:15,459 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c95c1a45-6d0a-4ade-acc5-70e84cc88d62/sv-benchmarks/c/forester-heap/sll-01-1.i[23774,23787] [2022-11-20 12:32:15,463 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:32:15,475 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 12:32:15,514 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c95c1a45-6d0a-4ade-acc5-70e84cc88d62/sv-benchmarks/c/forester-heap/sll-01-1.i[22034,22047] [2022-11-20 12:32:15,517 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c95c1a45-6d0a-4ade-acc5-70e84cc88d62/sv-benchmarks/c/forester-heap/sll-01-1.i[22307,22320] [2022-11-20 12:32:15,519 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c95c1a45-6d0a-4ade-acc5-70e84cc88d62/sv-benchmarks/c/forester-heap/sll-01-1.i[22516,22529] [2022-11-20 12:32:15,520 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c95c1a45-6d0a-4ade-acc5-70e84cc88d62/sv-benchmarks/c/forester-heap/sll-01-1.i[22586,22599] [2022-11-20 12:32:15,524 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c95c1a45-6d0a-4ade-acc5-70e84cc88d62/sv-benchmarks/c/forester-heap/sll-01-1.i[22853,22866] [2022-11-20 12:32:15,525 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c95c1a45-6d0a-4ade-acc5-70e84cc88d62/sv-benchmarks/c/forester-heap/sll-01-1.i[22961,22974] [2022-11-20 12:32:15,528 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c95c1a45-6d0a-4ade-acc5-70e84cc88d62/sv-benchmarks/c/forester-heap/sll-01-1.i[23192,23205] [2022-11-20 12:32:15,529 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c95c1a45-6d0a-4ade-acc5-70e84cc88d62/sv-benchmarks/c/forester-heap/sll-01-1.i[23272,23285] [2022-11-20 12:32:15,530 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c95c1a45-6d0a-4ade-acc5-70e84cc88d62/sv-benchmarks/c/forester-heap/sll-01-1.i[23351,23364] [2022-11-20 12:32:15,531 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c95c1a45-6d0a-4ade-acc5-70e84cc88d62/sv-benchmarks/c/forester-heap/sll-01-1.i[23441,23454] [2022-11-20 12:32:15,533 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c95c1a45-6d0a-4ade-acc5-70e84cc88d62/sv-benchmarks/c/forester-heap/sll-01-1.i[23619,23632] [2022-11-20 12:32:15,535 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c95c1a45-6d0a-4ade-acc5-70e84cc88d62/sv-benchmarks/c/forester-heap/sll-01-1.i[23697,23710] [2022-11-20 12:32:15,536 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c95c1a45-6d0a-4ade-acc5-70e84cc88d62/sv-benchmarks/c/forester-heap/sll-01-1.i[23774,23787] [2022-11-20 12:32:15,538 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:32:15,576 INFO L208 MainTranslator]: Completed translation [2022-11-20 12:32:15,577 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:32:15 WrapperNode [2022-11-20 12:32:15,577 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 12:32:15,581 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 12:32:15,581 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 12:32:15,581 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 12:32:15,589 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:32:15" (1/1) ... [2022-11-20 12:32:15,607 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:32:15" (1/1) ... [2022-11-20 12:32:15,638 INFO L138 Inliner]: procedures = 119, calls = 41, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 221 [2022-11-20 12:32:15,639 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 12:32:15,640 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 12:32:15,640 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 12:32:15,641 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 12:32:15,654 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:32:15" (1/1) ... [2022-11-20 12:32:15,655 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:32:15" (1/1) ... [2022-11-20 12:32:15,661 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:32:15" (1/1) ... [2022-11-20 12:32:15,661 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:32:15" (1/1) ... [2022-11-20 12:32:15,674 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:32:15" (1/1) ... [2022-11-20 12:32:15,686 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:32:15" (1/1) ... [2022-11-20 12:32:15,704 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:32:15" (1/1) ... [2022-11-20 12:32:15,706 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:32:15" (1/1) ... [2022-11-20 12:32:15,710 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 12:32:15,712 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 12:32:15,712 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 12:32:15,712 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 12:32:15,713 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:32:15" (1/1) ... [2022-11-20 12:32:15,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:32:15,739 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c95c1a45-6d0a-4ade-acc5-70e84cc88d62/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:32:15,761 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c95c1a45-6d0a-4ade-acc5-70e84cc88d62/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 12:32:15,797 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c95c1a45-6d0a-4ade-acc5-70e84cc88d62/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 12:32:15,830 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 12:32:15,831 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 12:32:15,831 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-20 12:32:15,831 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-20 12:32:15,831 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 12:32:15,831 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 12:32:15,832 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 12:32:15,832 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 12:32:16,001 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 12:32:16,013 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 12:32:16,593 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 12:32:16,603 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 12:32:16,604 INFO L300 CfgBuilder]: Removed 30 assume(true) statements. [2022-11-20 12:32:16,606 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:32:16 BoogieIcfgContainer [2022-11-20 12:32:16,607 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 12:32:16,610 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 12:32:16,610 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 12:32:16,615 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 12:32:16,615 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 12:32:15" (1/3) ... [2022-11-20 12:32:16,616 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12c94107 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:32:16, skipping insertion in model container [2022-11-20 12:32:16,617 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:32:15" (2/3) ... [2022-11-20 12:32:16,617 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12c94107 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:32:16, skipping insertion in model container [2022-11-20 12:32:16,617 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:32:16" (3/3) ... [2022-11-20 12:32:16,619 INFO L112 eAbstractionObserver]: Analyzing ICFG sll-01-1.i [2022-11-20 12:32:16,644 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 12:32:16,644 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 13 error locations. [2022-11-20 12:32:16,736 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 12:32:16,750 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@912eb8e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 12:32:16,750 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2022-11-20 12:32:16,756 INFO L276 IsEmpty]: Start isEmpty. Operand has 83 states, 69 states have (on average 1.9565217391304348) internal successors, (135), 82 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:32:16,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-20 12:32:16,768 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:32:16,769 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-20 12:32:16,770 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2022-11-20 12:32:16,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:32:16,778 INFO L85 PathProgramCache]: Analyzing trace with hash 925700, now seen corresponding path program 1 times [2022-11-20 12:32:16,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:32:16,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828797007] [2022-11-20 12:32:16,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:32:16,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:32:16,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:32:17,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:32:17,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:32:17,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828797007] [2022-11-20 12:32:17,079 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1828797007] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:32:17,080 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:32:17,080 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:32:17,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446042215] [2022-11-20 12:32:17,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:32:17,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:32:17,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:32:17,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:32:17,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:32:17,125 INFO L87 Difference]: Start difference. First operand has 83 states, 69 states have (on average 1.9565217391304348) internal successors, (135), 82 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:32:17,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:32:17,222 INFO L93 Difference]: Finished difference Result 180 states and 296 transitions. [2022-11-20 12:32:17,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:32:17,226 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-11-20 12:32:17,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:32:17,237 INFO L225 Difference]: With dead ends: 180 [2022-11-20 12:32:17,237 INFO L226 Difference]: Without dead ends: 95 [2022-11-20 12:32:17,241 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:32:17,246 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 83 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:32:17,247 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 102 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 12:32:17,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2022-11-20 12:32:17,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 77. [2022-11-20 12:32:17,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 65 states have (on average 1.323076923076923) internal successors, (86), 76 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:32:17,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 86 transitions. [2022-11-20 12:32:17,371 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 86 transitions. Word has length 4 [2022-11-20 12:32:17,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:32:17,372 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 86 transitions. [2022-11-20 12:32:17,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:32:17,373 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 86 transitions. [2022-11-20 12:32:17,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-20 12:32:17,375 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:32:17,376 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:32:17,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 12:32:17,392 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2022-11-20 12:32:17,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:32:17,394 INFO L85 PathProgramCache]: Analyzing trace with hash 261454926, now seen corresponding path program 1 times [2022-11-20 12:32:17,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:32:17,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512133846] [2022-11-20 12:32:17,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:32:17,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:32:17,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:32:17,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:32:17,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:32:17,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512133846] [2022-11-20 12:32:17,549 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512133846] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:32:17,550 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:32:17,550 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:32:17,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146196871] [2022-11-20 12:32:17,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:32:17,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:32:17,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:32:17,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:32:17,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:32:17,554 INFO L87 Difference]: Start difference. First operand 77 states and 86 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:32:17,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:32:17,593 INFO L93 Difference]: Finished difference Result 80 states and 89 transitions. [2022-11-20 12:32:17,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:32:17,596 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-20 12:32:17,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:32:17,597 INFO L225 Difference]: With dead ends: 80 [2022-11-20 12:32:17,597 INFO L226 Difference]: Without dead ends: 78 [2022-11-20 12:32:17,598 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:32:17,600 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 0 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:32:17,601 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 165 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 12:32:17,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2022-11-20 12:32:17,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2022-11-20 12:32:17,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 66 states have (on average 1.3181818181818181) internal successors, (87), 77 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:32:17,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 87 transitions. [2022-11-20 12:32:17,614 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 87 transitions. Word has length 10 [2022-11-20 12:32:17,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:32:17,615 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 87 transitions. [2022-11-20 12:32:17,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:32:17,615 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 87 transitions. [2022-11-20 12:32:17,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-20 12:32:17,616 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:32:17,616 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:32:17,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 12:32:17,617 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2022-11-20 12:32:17,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:32:17,618 INFO L85 PathProgramCache]: Analyzing trace with hash 261456848, now seen corresponding path program 1 times [2022-11-20 12:32:17,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:32:17,618 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434972702] [2022-11-20 12:32:17,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:32:17,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:32:17,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:32:18,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:32:18,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:32:18,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434972702] [2022-11-20 12:32:18,015 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434972702] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:32:18,015 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:32:18,016 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 12:32:18,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706570396] [2022-11-20 12:32:18,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:32:18,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:32:18,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:32:18,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:32:18,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:32:18,019 INFO L87 Difference]: Start difference. First operand 78 states and 87 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:32:18,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:32:18,157 INFO L93 Difference]: Finished difference Result 79 states and 88 transitions. [2022-11-20 12:32:18,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 12:32:18,158 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-20 12:32:18,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:32:18,160 INFO L225 Difference]: With dead ends: 79 [2022-11-20 12:32:18,163 INFO L226 Difference]: Without dead ends: 77 [2022-11-20 12:32:18,164 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:32:18,165 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 0 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:32:18,166 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 219 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 12:32:18,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2022-11-20 12:32:18,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 75. [2022-11-20 12:32:18,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 64 states have (on average 1.3125) internal successors, (84), 74 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:32:18,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 84 transitions. [2022-11-20 12:32:18,188 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 84 transitions. Word has length 10 [2022-11-20 12:32:18,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:32:18,189 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 84 transitions. [2022-11-20 12:32:18,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:32:18,190 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 84 transitions. [2022-11-20 12:32:18,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-20 12:32:18,192 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:32:18,193 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:32:18,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 12:32:18,193 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2022-11-20 12:32:18,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:32:18,195 INFO L85 PathProgramCache]: Analyzing trace with hash 1712619113, now seen corresponding path program 1 times [2022-11-20 12:32:18,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:32:18,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16023012] [2022-11-20 12:32:18,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:32:18,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:32:18,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:32:18,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:32:18,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:32:18,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16023012] [2022-11-20 12:32:18,319 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16023012] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:32:18,319 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:32:18,321 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:32:18,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319347913] [2022-11-20 12:32:18,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:32:18,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:32:18,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:32:18,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:32:18,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:32:18,324 INFO L87 Difference]: Start difference. First operand 75 states and 84 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:32:18,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:32:18,427 INFO L93 Difference]: Finished difference Result 78 states and 88 transitions. [2022-11-20 12:32:18,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:32:18,428 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-11-20 12:32:18,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:32:18,429 INFO L225 Difference]: With dead ends: 78 [2022-11-20 12:32:18,429 INFO L226 Difference]: Without dead ends: 74 [2022-11-20 12:32:18,430 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:32:18,431 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 16 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:32:18,432 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 125 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 12:32:18,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2022-11-20 12:32:18,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 71. [2022-11-20 12:32:18,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 62 states have (on average 1.2903225806451613) internal successors, (80), 70 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:32:18,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 80 transitions. [2022-11-20 12:32:18,442 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 80 transitions. Word has length 15 [2022-11-20 12:32:18,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:32:18,442 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 80 transitions. [2022-11-20 12:32:18,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:32:18,443 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 80 transitions. [2022-11-20 12:32:18,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-20 12:32:18,444 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:32:18,444 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:32:18,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 12:32:18,445 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2022-11-20 12:32:18,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:32:18,446 INFO L85 PathProgramCache]: Analyzing trace with hash 1551589151, now seen corresponding path program 1 times [2022-11-20 12:32:18,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:32:18,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794447098] [2022-11-20 12:32:18,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:32:18,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:32:18,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:32:18,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:32:18,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:32:18,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794447098] [2022-11-20 12:32:18,744 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794447098] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:32:18,745 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:32:18,745 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 12:32:18,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336385367] [2022-11-20 12:32:18,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:32:18,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:32:18,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:32:18,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:32:18,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:32:18,755 INFO L87 Difference]: Start difference. First operand 71 states and 80 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:32:18,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:32:18,920 INFO L93 Difference]: Finished difference Result 187 states and 209 transitions. [2022-11-20 12:32:18,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 12:32:18,921 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-20 12:32:18,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:32:18,926 INFO L225 Difference]: With dead ends: 187 [2022-11-20 12:32:18,926 INFO L226 Difference]: Without dead ends: 124 [2022-11-20 12:32:18,927 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:32:18,930 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 56 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:32:18,931 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 187 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 12:32:18,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2022-11-20 12:32:18,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 73. [2022-11-20 12:32:18,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 64 states have (on average 1.28125) internal successors, (82), 72 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:32:18,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 82 transitions. [2022-11-20 12:32:18,950 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 82 transitions. Word has length 16 [2022-11-20 12:32:18,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:32:18,951 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 82 transitions. [2022-11-20 12:32:18,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:32:18,951 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 82 transitions. [2022-11-20 12:32:18,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-20 12:32:18,952 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:32:18,952 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:32:18,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 12:32:18,952 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2022-11-20 12:32:18,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:32:18,953 INFO L85 PathProgramCache]: Analyzing trace with hash -2063319775, now seen corresponding path program 1 times [2022-11-20 12:32:18,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:32:18,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201807812] [2022-11-20 12:32:18,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:32:18,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:32:18,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:32:19,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:32:19,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:32:19,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201807812] [2022-11-20 12:32:19,077 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201807812] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:32:19,077 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:32:19,078 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 12:32:19,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220400906] [2022-11-20 12:32:19,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:32:19,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:32:19,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:32:19,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:32:19,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:32:19,104 INFO L87 Difference]: Start difference. First operand 73 states and 82 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:32:19,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:32:19,215 INFO L93 Difference]: Finished difference Result 132 states and 146 transitions. [2022-11-20 12:32:19,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 12:32:19,216 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-20 12:32:19,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:32:19,217 INFO L225 Difference]: With dead ends: 132 [2022-11-20 12:32:19,217 INFO L226 Difference]: Without dead ends: 112 [2022-11-20 12:32:19,218 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:32:19,219 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 131 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:32:19,219 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 116 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 12:32:19,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2022-11-20 12:32:19,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 72. [2022-11-20 12:32:19,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 64 states have (on average 1.265625) internal successors, (81), 71 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:32:19,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 81 transitions. [2022-11-20 12:32:19,231 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 81 transitions. Word has length 16 [2022-11-20 12:32:19,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:32:19,231 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 81 transitions. [2022-11-20 12:32:19,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:32:19,232 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 81 transitions. [2022-11-20 12:32:19,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-20 12:32:19,233 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:32:19,233 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:32:19,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 12:32:19,234 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2022-11-20 12:32:19,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:32:19,234 INFO L85 PathProgramCache]: Analyzing trace with hash -940628212, now seen corresponding path program 1 times [2022-11-20 12:32:19,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:32:19,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879652518] [2022-11-20 12:32:19,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:32:19,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:32:19,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:32:19,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:32:19,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:32:19,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879652518] [2022-11-20 12:32:19,285 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879652518] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:32:19,286 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:32:19,286 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:32:19,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81882639] [2022-11-20 12:32:19,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:32:19,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:32:19,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:32:19,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:32:19,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:32:19,288 INFO L87 Difference]: Start difference. First operand 72 states and 81 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:32:19,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:32:19,310 INFO L93 Difference]: Finished difference Result 137 states and 155 transitions. [2022-11-20 12:32:19,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:32:19,311 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-11-20 12:32:19,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:32:19,312 INFO L225 Difference]: With dead ends: 137 [2022-11-20 12:32:19,312 INFO L226 Difference]: Without dead ends: 96 [2022-11-20 12:32:19,313 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:32:19,314 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 24 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:32:19,315 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 149 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 12:32:19,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2022-11-20 12:32:19,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 75. [2022-11-20 12:32:19,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 67 states have (on average 1.2686567164179106) internal successors, (85), 74 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:32:19,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 85 transitions. [2022-11-20 12:32:19,326 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 85 transitions. Word has length 20 [2022-11-20 12:32:19,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:32:19,327 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 85 transitions. [2022-11-20 12:32:19,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:32:19,327 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 85 transitions. [2022-11-20 12:32:19,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-20 12:32:19,328 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:32:19,328 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:32:19,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 12:32:19,329 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2022-11-20 12:32:19,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:32:19,330 INFO L85 PathProgramCache]: Analyzing trace with hash 905291998, now seen corresponding path program 1 times [2022-11-20 12:32:19,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:32:19,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127459548] [2022-11-20 12:32:19,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:32:19,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:32:19,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:32:19,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:32:19,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:32:19,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127459548] [2022-11-20 12:32:19,379 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [127459548] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:32:19,380 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:32:19,380 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:32:19,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500909817] [2022-11-20 12:32:19,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:32:19,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:32:19,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:32:19,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:32:19,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:32:19,382 INFO L87 Difference]: Start difference. First operand 75 states and 85 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:32:19,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:32:19,404 INFO L93 Difference]: Finished difference Result 75 states and 85 transitions. [2022-11-20 12:32:19,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:32:19,405 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-11-20 12:32:19,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:32:19,406 INFO L225 Difference]: With dead ends: 75 [2022-11-20 12:32:19,406 INFO L226 Difference]: Without dead ends: 73 [2022-11-20 12:32:19,407 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:32:19,408 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 13 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:32:19,408 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 129 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 12:32:19,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2022-11-20 12:32:19,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2022-11-20 12:32:19,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 66 states have (on average 1.2575757575757576) internal successors, (83), 72 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:32:19,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 83 transitions. [2022-11-20 12:32:19,418 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 83 transitions. Word has length 21 [2022-11-20 12:32:19,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:32:19,419 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 83 transitions. [2022-11-20 12:32:19,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:32:19,419 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 83 transitions. [2022-11-20 12:32:19,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-20 12:32:19,420 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:32:19,420 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:32:19,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 12:32:19,421 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2022-11-20 12:32:19,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:32:19,422 INFO L85 PathProgramCache]: Analyzing trace with hash 886650935, now seen corresponding path program 1 times [2022-11-20 12:32:19,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:32:19,422 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194632302] [2022-11-20 12:32:19,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:32:19,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:32:19,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:32:19,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:32:19,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:32:19,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194632302] [2022-11-20 12:32:19,584 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194632302] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:32:19,584 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:32:19,584 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 12:32:19,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325527062] [2022-11-20 12:32:19,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:32:19,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:32:19,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:32:19,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:32:19,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:32:19,586 INFO L87 Difference]: Start difference. First operand 73 states and 83 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:32:19,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:32:19,684 INFO L93 Difference]: Finished difference Result 74 states and 84 transitions. [2022-11-20 12:32:19,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 12:32:19,685 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-11-20 12:32:19,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:32:19,686 INFO L225 Difference]: With dead ends: 74 [2022-11-20 12:32:19,686 INFO L226 Difference]: Without dead ends: 72 [2022-11-20 12:32:19,686 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:32:19,687 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 0 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:32:19,688 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 181 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 12:32:19,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2022-11-20 12:32:19,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 71. [2022-11-20 12:32:19,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 65 states have (on average 1.2461538461538462) internal successors, (81), 70 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:32:19,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 81 transitions. [2022-11-20 12:32:19,698 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 81 transitions. Word has length 23 [2022-11-20 12:32:19,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:32:19,698 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 81 transitions. [2022-11-20 12:32:19,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:32:19,699 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 81 transitions. [2022-11-20 12:32:19,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-20 12:32:19,700 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:32:19,700 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:32:19,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-20 12:32:19,700 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2022-11-20 12:32:19,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:32:19,701 INFO L85 PathProgramCache]: Analyzing trace with hash 1458355201, now seen corresponding path program 1 times [2022-11-20 12:32:19,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:32:19,702 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597417933] [2022-11-20 12:32:19,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:32:19,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:32:19,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:32:19,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:32:19,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:32:19,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597417933] [2022-11-20 12:32:19,912 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597417933] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:32:19,912 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:32:19,912 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 12:32:19,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833088010] [2022-11-20 12:32:19,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:32:19,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:32:19,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:32:19,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:32:19,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:32:19,914 INFO L87 Difference]: Start difference. First operand 71 states and 81 transitions. Second operand has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:32:20,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:32:20,230 INFO L93 Difference]: Finished difference Result 175 states and 199 transitions. [2022-11-20 12:32:20,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 12:32:20,231 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-11-20 12:32:20,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:32:20,232 INFO L225 Difference]: With dead ends: 175 [2022-11-20 12:32:20,233 INFO L226 Difference]: Without dead ends: 133 [2022-11-20 12:32:20,233 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-11-20 12:32:20,234 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 120 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 281 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 12:32:20,235 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 281 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 12:32:20,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2022-11-20 12:32:20,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 81. [2022-11-20 12:32:20,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 75 states have (on average 1.2266666666666666) internal successors, (92), 80 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:32:20,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 92 transitions. [2022-11-20 12:32:20,247 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 92 transitions. Word has length 24 [2022-11-20 12:32:20,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:32:20,248 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 92 transitions. [2022-11-20 12:32:20,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:32:20,248 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 92 transitions. [2022-11-20 12:32:20,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-20 12:32:20,249 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:32:20,249 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:32:20,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-20 12:32:20,250 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2022-11-20 12:32:20,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:32:20,251 INFO L85 PathProgramCache]: Analyzing trace with hash 1357759361, now seen corresponding path program 1 times [2022-11-20 12:32:20,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:32:20,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042895309] [2022-11-20 12:32:20,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:32:20,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:32:20,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:32:23,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:32:23,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:32:23,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042895309] [2022-11-20 12:32:23,888 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042895309] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:32:23,888 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:32:23,889 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 12:32:23,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464677197] [2022-11-20 12:32:23,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:32:23,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 12:32:23,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:32:23,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 12:32:23,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 12:32:23,891 INFO L87 Difference]: Start difference. First operand 81 states and 92 transitions. Second operand has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:32:24,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:32:24,582 INFO L93 Difference]: Finished difference Result 234 states and 259 transitions. [2022-11-20 12:32:24,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 12:32:24,583 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-11-20 12:32:24,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:32:24,586 INFO L225 Difference]: With dead ends: 234 [2022-11-20 12:32:24,586 INFO L226 Difference]: Without dead ends: 232 [2022-11-20 12:32:24,587 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-11-20 12:32:24,593 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 258 mSDsluCounter, 338 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 420 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 12:32:24,594 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [258 Valid, 420 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-20 12:32:24,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2022-11-20 12:32:24,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 93. [2022-11-20 12:32:24,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 87 states have (on average 1.2183908045977012) internal successors, (106), 92 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:32:24,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 106 transitions. [2022-11-20 12:32:24,622 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 106 transitions. Word has length 24 [2022-11-20 12:32:24,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:32:24,622 INFO L495 AbstractCegarLoop]: Abstraction has 93 states and 106 transitions. [2022-11-20 12:32:24,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:32:24,623 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 106 transitions. [2022-11-20 12:32:24,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-20 12:32:24,626 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:32:24,627 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:32:24,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-20 12:32:24,628 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2022-11-20 12:32:24,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:32:24,629 INFO L85 PathProgramCache]: Analyzing trace with hash 680714775, now seen corresponding path program 1 times [2022-11-20 12:32:24,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:32:24,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376064173] [2022-11-20 12:32:24,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:32:24,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:32:24,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:32:24,766 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 12:32:24,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:32:24,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376064173] [2022-11-20 12:32:24,766 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376064173] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:32:24,767 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:32:24,767 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:32:24,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100886309] [2022-11-20 12:32:24,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:32:24,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 12:32:24,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:32:24,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 12:32:24,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:32:24,769 INFO L87 Difference]: Start difference. First operand 93 states and 106 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:32:24,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:32:24,959 INFO L93 Difference]: Finished difference Result 139 states and 158 transitions. [2022-11-20 12:32:24,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 12:32:24,960 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-11-20 12:32:24,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:32:24,961 INFO L225 Difference]: With dead ends: 139 [2022-11-20 12:32:24,962 INFO L226 Difference]: Without dead ends: 121 [2022-11-20 12:32:24,962 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:32:24,964 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 59 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:32:24,965 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 186 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 12:32:24,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2022-11-20 12:32:24,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 113. [2022-11-20 12:32:24,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 107 states have (on average 1.2429906542056075) internal successors, (133), 112 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:32:24,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 133 transitions. [2022-11-20 12:32:24,998 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 133 transitions. Word has length 26 [2022-11-20 12:32:24,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:32:24,999 INFO L495 AbstractCegarLoop]: Abstraction has 113 states and 133 transitions. [2022-11-20 12:32:24,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:32:24,999 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 133 transitions. [2022-11-20 12:32:25,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-20 12:32:25,004 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:32:25,004 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:32:25,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-20 12:32:25,004 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2022-11-20 12:32:25,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:32:25,005 INFO L85 PathProgramCache]: Analyzing trace with hash -1502606953, now seen corresponding path program 1 times [2022-11-20 12:32:25,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:32:25,006 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910777573] [2022-11-20 12:32:25,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:32:25,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:32:25,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:32:25,122 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 12:32:25,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:32:25,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910777573] [2022-11-20 12:32:25,123 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910777573] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:32:25,123 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:32:25,124 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:32:25,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037803373] [2022-11-20 12:32:25,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:32:25,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:32:25,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:32:25,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:32:25,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:32:25,126 INFO L87 Difference]: Start difference. First operand 113 states and 133 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:32:25,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:32:25,224 INFO L93 Difference]: Finished difference Result 113 states and 133 transitions. [2022-11-20 12:32:25,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:32:25,225 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-11-20 12:32:25,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:32:25,226 INFO L225 Difference]: With dead ends: 113 [2022-11-20 12:32:25,226 INFO L226 Difference]: Without dead ends: 111 [2022-11-20 12:32:25,227 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:32:25,228 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 49 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:32:25,229 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 76 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 12:32:25,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2022-11-20 12:32:25,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2022-11-20 12:32:25,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 106 states have (on average 1.2358490566037736) internal successors, (131), 110 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:32:25,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 131 transitions. [2022-11-20 12:32:25,264 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 131 transitions. Word has length 26 [2022-11-20 12:32:25,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:32:25,264 INFO L495 AbstractCegarLoop]: Abstraction has 111 states and 131 transitions. [2022-11-20 12:32:25,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:32:25,265 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 131 transitions. [2022-11-20 12:32:25,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-20 12:32:25,267 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:32:25,267 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:32:25,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-20 12:32:25,268 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2022-11-20 12:32:25,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:32:25,269 INFO L85 PathProgramCache]: Analyzing trace with hash -988757936, now seen corresponding path program 1 times [2022-11-20 12:32:25,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:32:25,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818517871] [2022-11-20 12:32:25,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:32:25,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:32:25,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:32:28,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:32:28,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:32:28,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818517871] [2022-11-20 12:32:28,614 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818517871] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:32:28,614 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:32:28,615 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 12:32:28,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959182527] [2022-11-20 12:32:28,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:32:28,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 12:32:28,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:32:28,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 12:32:28,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 12:32:28,618 INFO L87 Difference]: Start difference. First operand 111 states and 131 transitions. Second operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:32:29,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:32:29,287 INFO L93 Difference]: Finished difference Result 268 states and 308 transitions. [2022-11-20 12:32:29,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 12:32:29,288 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-11-20 12:32:29,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:32:29,290 INFO L225 Difference]: With dead ends: 268 [2022-11-20 12:32:29,290 INFO L226 Difference]: Without dead ends: 266 [2022-11-20 12:32:29,291 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-11-20 12:32:29,292 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 263 mSDsluCounter, 315 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 263 SdHoareTripleChecker+Valid, 384 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 12:32:29,292 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [263 Valid, 384 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 198 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-20 12:32:29,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2022-11-20 12:32:29,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 114. [2022-11-20 12:32:29,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 109 states have (on average 1.2293577981651376) internal successors, (134), 113 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:32:29,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 134 transitions. [2022-11-20 12:32:29,338 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 134 transitions. Word has length 27 [2022-11-20 12:32:29,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:32:29,339 INFO L495 AbstractCegarLoop]: Abstraction has 114 states and 134 transitions. [2022-11-20 12:32:29,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:32:29,339 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 134 transitions. [2022-11-20 12:32:29,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-20 12:32:29,340 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:32:29,340 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-20 12:32:29,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-20 12:32:29,341 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2022-11-20 12:32:29,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:32:29,341 INFO L85 PathProgramCache]: Analyzing trace with hash -937634650, now seen corresponding path program 1 times [2022-11-20 12:32:29,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:32:29,342 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993307799] [2022-11-20 12:32:29,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:32:29,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:32:29,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:32:29,537 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:32:29,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:32:29,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993307799] [2022-11-20 12:32:29,538 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993307799] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:32:29,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [567810135] [2022-11-20 12:32:29,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:32:29,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:32:29,539 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c95c1a45-6d0a-4ade-acc5-70e84cc88d62/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:32:29,546 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c95c1a45-6d0a-4ade-acc5-70e84cc88d62/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:32:29,576 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c95c1a45-6d0a-4ade-acc5-70e84cc88d62/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 12:32:29,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:32:29,715 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-20 12:32:29,723 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:32:29,802 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-20 12:32:29,811 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-20 12:32:29,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:32:29,904 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-20 12:32:29,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:32:29,923 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-20 12:32:30,156 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-20 12:32:30,165 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-20 12:32:30,170 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:32:30,170 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:32:30,364 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:32:30,365 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [567810135] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:32:30,365 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:32:30,365 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2022-11-20 12:32:30,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327577427] [2022-11-20 12:32:30,366 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:32:30,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 12:32:30,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:32:30,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 12:32:30,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 12:32:30,368 INFO L87 Difference]: Start difference. First operand 114 states and 134 transitions. Second operand has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:32:30,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:32:30,665 INFO L93 Difference]: Finished difference Result 199 states and 229 transitions. [2022-11-20 12:32:30,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 12:32:30,665 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2022-11-20 12:32:30,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:32:30,667 INFO L225 Difference]: With dead ends: 199 [2022-11-20 12:32:30,667 INFO L226 Difference]: Without dead ends: 139 [2022-11-20 12:32:30,667 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-20 12:32:30,668 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 109 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 12:32:30,669 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 209 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 12:32:30,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2022-11-20 12:32:30,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 116. [2022-11-20 12:32:30,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 111 states have (on average 1.2072072072072073) internal successors, (134), 115 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:32:30,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 134 transitions. [2022-11-20 12:32:30,719 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 134 transitions. Word has length 29 [2022-11-20 12:32:30,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:32:30,720 INFO L495 AbstractCegarLoop]: Abstraction has 116 states and 134 transitions. [2022-11-20 12:32:30,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:32:30,720 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 134 transitions. [2022-11-20 12:32:30,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-20 12:32:30,721 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:32:30,721 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:32:30,731 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c95c1a45-6d0a-4ade-acc5-70e84cc88d62/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-20 12:32:30,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c95c1a45-6d0a-4ade-acc5-70e84cc88d62/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-20 12:32:30,928 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2022-11-20 12:32:30,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:32:30,929 INFO L85 PathProgramCache]: Analyzing trace with hash -2010394174, now seen corresponding path program 1 times [2022-11-20 12:32:30,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:32:30,929 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108570617] [2022-11-20 12:32:30,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:32:30,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:32:30,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:32:31,331 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:32:31,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:32:31,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108570617] [2022-11-20 12:32:31,333 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108570617] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:32:31,333 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:32:31,333 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 12:32:31,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281847459] [2022-11-20 12:32:31,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:32:31,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:32:31,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:32:31,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:32:31,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:32:31,335 INFO L87 Difference]: Start difference. First operand 116 states and 134 transitions. Second operand has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:32:31,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:32:31,714 INFO L93 Difference]: Finished difference Result 159 states and 176 transitions. [2022-11-20 12:32:31,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 12:32:31,715 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2022-11-20 12:32:31,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:32:31,716 INFO L225 Difference]: With dead ends: 159 [2022-11-20 12:32:31,716 INFO L226 Difference]: Without dead ends: 139 [2022-11-20 12:32:31,717 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-20 12:32:31,718 INFO L413 NwaCegarLoop]: 87 mSDtfsCounter, 69 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 290 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 12:32:31,718 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 290 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 12:32:31,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2022-11-20 12:32:31,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 115. [2022-11-20 12:32:31,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 110 states have (on average 1.2) internal successors, (132), 114 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:32:31,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 132 transitions. [2022-11-20 12:32:31,767 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 132 transitions. Word has length 29 [2022-11-20 12:32:31,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:32:31,768 INFO L495 AbstractCegarLoop]: Abstraction has 115 states and 132 transitions. [2022-11-20 12:32:31,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:32:31,768 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 132 transitions. [2022-11-20 12:32:31,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-11-20 12:32:31,769 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:32:31,769 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:32:31,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-20 12:32:31,770 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2022-11-20 12:32:31,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:32:31,770 INFO L85 PathProgramCache]: Analyzing trace with hash 1521997910, now seen corresponding path program 1 times [2022-11-20 12:32:31,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:32:31,771 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239028914] [2022-11-20 12:32:31,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:32:31,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:32:31,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:32:31,848 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:32:31,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:32:31,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239028914] [2022-11-20 12:32:31,849 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239028914] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:32:31,849 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:32:31,849 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:32:31,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697416587] [2022-11-20 12:32:31,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:32:31,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:32:31,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:32:31,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:32:31,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:32:31,851 INFO L87 Difference]: Start difference. First operand 115 states and 132 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:32:31,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:32:31,965 INFO L93 Difference]: Finished difference Result 220 states and 257 transitions. [2022-11-20 12:32:31,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:32:31,966 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2022-11-20 12:32:31,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:32:31,967 INFO L225 Difference]: With dead ends: 220 [2022-11-20 12:32:31,967 INFO L226 Difference]: Without dead ends: 165 [2022-11-20 12:32:31,970 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:32:31,971 INFO L413 NwaCegarLoop]: 98 mSDtfsCounter, 26 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:32:31,972 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 164 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 12:32:31,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2022-11-20 12:32:32,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 138. [2022-11-20 12:32:32,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 133 states have (on average 1.2105263157894737) internal successors, (161), 137 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:32:32,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 161 transitions. [2022-11-20 12:32:32,051 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 161 transitions. Word has length 31 [2022-11-20 12:32:32,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:32:32,052 INFO L495 AbstractCegarLoop]: Abstraction has 138 states and 161 transitions. [2022-11-20 12:32:32,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:32:32,053 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 161 transitions. [2022-11-20 12:32:32,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-20 12:32:32,053 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:32:32,054 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-20 12:32:32,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-20 12:32:32,054 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2022-11-20 12:32:32,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:32:32,055 INFO L85 PathProgramCache]: Analyzing trace with hash 914215427, now seen corresponding path program 1 times [2022-11-20 12:32:32,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:32:32,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739593835] [2022-11-20 12:32:32,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:32:32,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:32:32,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:32:32,274 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:32:32,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:32:32,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739593835] [2022-11-20 12:32:32,275 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739593835] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:32:32,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1068252130] [2022-11-20 12:32:32,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:32:32,276 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:32:32,276 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c95c1a45-6d0a-4ade-acc5-70e84cc88d62/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:32:32,278 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c95c1a45-6d0a-4ade-acc5-70e84cc88d62/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:32:32,296 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c95c1a45-6d0a-4ade-acc5-70e84cc88d62/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 12:32:32,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:32:32,457 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-20 12:32:32,462 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:32:32,481 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-20 12:32:32,488 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-20 12:32:32,543 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-20 12:32:32,558 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-20 12:32:32,701 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-20 12:32:32,707 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-20 12:32:32,715 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 12:32:32,715 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:32:32,870 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 12:32:32,870 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1068252130] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:32:32,871 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:32:32,871 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 4] total 6 [2022-11-20 12:32:32,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569759601] [2022-11-20 12:32:32,872 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:32:32,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:32:32,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:32:32,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:32:32,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:32:32,874 INFO L87 Difference]: Start difference. First operand 138 states and 161 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:32:33,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:32:33,277 INFO L93 Difference]: Finished difference Result 247 states and 282 transitions. [2022-11-20 12:32:33,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 12:32:33,278 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-11-20 12:32:33,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:32:33,279 INFO L225 Difference]: With dead ends: 247 [2022-11-20 12:32:33,279 INFO L226 Difference]: Without dead ends: 216 [2022-11-20 12:32:33,280 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-20 12:32:33,281 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 95 mSDsluCounter, 215 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 286 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 12:32:33,281 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 286 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 12:32:33,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2022-11-20 12:32:33,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 165. [2022-11-20 12:32:33,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 160 states have (on average 1.2375) internal successors, (198), 164 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:32:33,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 198 transitions. [2022-11-20 12:32:33,347 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 198 transitions. Word has length 32 [2022-11-20 12:32:33,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:32:33,348 INFO L495 AbstractCegarLoop]: Abstraction has 165 states and 198 transitions. [2022-11-20 12:32:33,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:32:33,349 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 198 transitions. [2022-11-20 12:32:33,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-11-20 12:32:33,349 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:32:33,349 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-20 12:32:33,362 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c95c1a45-6d0a-4ade-acc5-70e84cc88d62/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 12:32:33,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c95c1a45-6d0a-4ade-acc5-70e84cc88d62/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-20 12:32:33,557 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2022-11-20 12:32:33,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:32:33,558 INFO L85 PathProgramCache]: Analyzing trace with hash 191981961, now seen corresponding path program 1 times [2022-11-20 12:32:33,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:32:33,559 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306262794] [2022-11-20 12:32:33,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:32:33,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:32:33,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:32:33,705 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:32:33,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:32:33,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306262794] [2022-11-20 12:32:33,706 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [306262794] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:32:33,706 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:32:33,707 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:32:33,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889920689] [2022-11-20 12:32:33,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:32:33,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 12:32:33,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:32:33,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 12:32:33,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:32:33,709 INFO L87 Difference]: Start difference. First operand 165 states and 198 transitions. Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:32:33,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:32:33,857 INFO L93 Difference]: Finished difference Result 231 states and 274 transitions. [2022-11-20 12:32:33,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:32:33,858 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2022-11-20 12:32:33,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:32:33,859 INFO L225 Difference]: With dead ends: 231 [2022-11-20 12:32:33,860 INFO L226 Difference]: Without dead ends: 117 [2022-11-20 12:32:33,860 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:32:33,861 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 24 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:32:33,862 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 188 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 12:32:33,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2022-11-20 12:32:33,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2022-11-20 12:32:33,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 113 states have (on average 1.1592920353982301) internal successors, (131), 116 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:32:33,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 131 transitions. [2022-11-20 12:32:33,902 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 131 transitions. Word has length 35 [2022-11-20 12:32:33,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:32:33,903 INFO L495 AbstractCegarLoop]: Abstraction has 117 states and 131 transitions. [2022-11-20 12:32:33,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:32:33,904 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 131 transitions. [2022-11-20 12:32:33,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-20 12:32:33,904 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:32:33,905 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-20 12:32:33,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-20 12:32:33,905 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2022-11-20 12:32:33,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:32:33,906 INFO L85 PathProgramCache]: Analyzing trace with hash 1562646056, now seen corresponding path program 1 times [2022-11-20 12:32:33,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:32:33,906 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558828826] [2022-11-20 12:32:33,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:32:33,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:32:33,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:32:34,656 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:32:34,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:32:34,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558828826] [2022-11-20 12:32:34,657 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558828826] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:32:34,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [35136531] [2022-11-20 12:32:34,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:32:34,657 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:32:34,657 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c95c1a45-6d0a-4ade-acc5-70e84cc88d62/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:32:34,659 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c95c1a45-6d0a-4ade-acc5-70e84cc88d62/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:32:34,673 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c95c1a45-6d0a-4ade-acc5-70e84cc88d62/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 12:32:34,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:32:34,855 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 42 conjunts are in the unsatisfiable core [2022-11-20 12:32:34,860 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:32:34,867 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-20 12:32:34,916 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 12:32:34,923 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 12:32:35,120 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-20 12:32:35,121 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-20 12:32:35,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:32:35,139 INFO L350 Elim1Store]: Elim1 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 26 [2022-11-20 12:32:35,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:32:35,154 INFO L350 Elim1Store]: Elim1 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 26 [2022-11-20 12:32:35,168 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 23 [2022-11-20 12:32:35,184 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 23 [2022-11-20 12:32:35,454 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-20 12:32:35,455 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 37 [2022-11-20 12:32:35,477 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 27 [2022-11-20 12:32:35,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:32:35,859 INFO L350 Elim1Store]: Elim1 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 23 treesize of output 11 [2022-11-20 12:32:35,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:32:35,870 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:32:35,871 INFO L350 Elim1Store]: Elim1 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 1 case distinctions, treesize of input 22 treesize of output 10 [2022-11-20 12:32:35,878 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:32:35,878 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:32:36,021 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (+ |c_ULTIMATE.start_main_~list~0#1.offset| 4))) (and (forall ((v_ArrVal_978 (Array Int Int))) (= (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_978) |c_ULTIMATE.start_main_~list~0#1.base|) .cse0) 0)) (forall ((v_ArrVal_979 (Array Int Int))) (= (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_979) |c_ULTIMATE.start_main_~list~0#1.base|) .cse0) 0)))) is different from false [2022-11-20 12:32:40,547 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 12:32:40,555 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:32:40,555 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 31 [2022-11-20 12:32:40,565 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 12:32:40,569 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:32:40,569 INFO L350 Elim1Store]: Elim1 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 1 case distinctions, treesize of input 54 treesize of output 30 [2022-11-20 12:32:40,577 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-20 12:32:40,586 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 12:32:40,590 INFO L321 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2022-11-20 12:32:40,591 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 1 [2022-11-20 12:32:40,635 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:32:40,636 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [35136531] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:32:40,636 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:32:40,636 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 23 [2022-11-20 12:32:40,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683540758] [2022-11-20 12:32:40,640 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:32:40,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-20 12:32:40,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:32:40,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-20 12:32:40,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=369, Unknown=2, NotChecked=40, Total=506 [2022-11-20 12:32:40,642 INFO L87 Difference]: Start difference. First operand 117 states and 131 transitions. Second operand has 23 states, 23 states have (on average 4.0) internal successors, (92), 23 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:32:41,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:32:41,244 INFO L93 Difference]: Finished difference Result 213 states and 237 transitions. [2022-11-20 12:32:41,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 12:32:41,245 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.0) internal successors, (92), 23 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2022-11-20 12:32:41,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:32:41,246 INFO L225 Difference]: With dead ends: 213 [2022-11-20 12:32:41,247 INFO L226 Difference]: Without dead ends: 153 [2022-11-20 12:32:41,248 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 1 IntricatePredicates, 1 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=143, Invalid=509, Unknown=2, NotChecked=48, Total=702 [2022-11-20 12:32:41,249 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 100 mSDsluCounter, 503 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 554 SdHoareTripleChecker+Invalid, 367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 182 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 12:32:41,249 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 554 Invalid, 367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 177 Invalid, 0 Unknown, 182 Unchecked, 0.2s Time] [2022-11-20 12:32:41,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2022-11-20 12:32:41,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 138. [2022-11-20 12:32:41,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 134 states have (on average 1.1567164179104477) internal successors, (155), 137 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:32:41,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 155 transitions. [2022-11-20 12:32:41,299 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 155 transitions. Word has length 36 [2022-11-20 12:32:41,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:32:41,300 INFO L495 AbstractCegarLoop]: Abstraction has 138 states and 155 transitions. [2022-11-20 12:32:41,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.0) internal successors, (92), 23 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:32:41,301 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 155 transitions. [2022-11-20 12:32:41,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-20 12:32:41,301 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:32:41,302 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-20 12:32:41,316 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c95c1a45-6d0a-4ade-acc5-70e84cc88d62/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-20 12:32:41,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c95c1a45-6d0a-4ade-acc5-70e84cc88d62/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:32:41,509 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2022-11-20 12:32:41,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:32:41,510 INFO L85 PathProgramCache]: Analyzing trace with hash -431498650, now seen corresponding path program 1 times [2022-11-20 12:32:41,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:32:41,510 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704832269] [2022-11-20 12:32:41,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:32:41,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:32:41,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:32:42,546 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:32:42,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:32:42,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704832269] [2022-11-20 12:32:42,547 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704832269] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:32:42,548 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:32:42,548 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:32:42,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929182473] [2022-11-20 12:32:42,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:32:42,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 12:32:42,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:32:42,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 12:32:42,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:32:42,550 INFO L87 Difference]: Start difference. First operand 138 states and 155 transitions. Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:32:42,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:32:42,745 INFO L93 Difference]: Finished difference Result 224 states and 254 transitions. [2022-11-20 12:32:42,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 12:32:42,746 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2022-11-20 12:32:42,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:32:42,747 INFO L225 Difference]: With dead ends: 224 [2022-11-20 12:32:42,747 INFO L226 Difference]: Without dead ends: 147 [2022-11-20 12:32:42,747 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:32:42,749 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 14 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 218 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:32:42,749 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 218 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 12:32:42,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2022-11-20 12:32:42,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 140. [2022-11-20 12:32:42,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 136 states have (on average 1.1544117647058822) internal successors, (157), 139 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:32:42,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 157 transitions. [2022-11-20 12:32:42,789 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 157 transitions. Word has length 36 [2022-11-20 12:32:42,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:32:42,789 INFO L495 AbstractCegarLoop]: Abstraction has 140 states and 157 transitions. [2022-11-20 12:32:42,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:32:42,790 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 157 transitions. [2022-11-20 12:32:42,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-20 12:32:42,791 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:32:42,791 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-20 12:32:42,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-20 12:32:42,791 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2022-11-20 12:32:42,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:32:42,792 INFO L85 PathProgramCache]: Analyzing trace with hash 589569704, now seen corresponding path program 1 times [2022-11-20 12:32:42,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:32:42,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806389913] [2022-11-20 12:32:42,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:32:42,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:32:42,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:32:46,215 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:32:46,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:32:46,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806389913] [2022-11-20 12:32:46,216 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806389913] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:32:46,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1836841807] [2022-11-20 12:32:46,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:32:46,216 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:32:46,216 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c95c1a45-6d0a-4ade-acc5-70e84cc88d62/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:32:46,219 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c95c1a45-6d0a-4ade-acc5-70e84cc88d62/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:32:46,258 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c95c1a45-6d0a-4ade-acc5-70e84cc88d62/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 12:32:46,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:32:46,477 INFO L263 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 66 conjunts are in the unsatisfiable core [2022-11-20 12:32:46,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:32:46,493 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-20 12:32:46,531 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 12:32:46,541 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 12:32:46,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:32:46,721 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 26 [2022-11-20 12:32:46,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:32:46,735 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 26 [2022-11-20 12:32:46,760 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-20 12:32:46,761 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 27 [2022-11-20 12:32:46,783 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-20 12:32:46,783 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 27 [2022-11-20 12:32:46,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:32:46,805 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2022-11-20 12:32:46,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:32:46,827 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2022-11-20 12:32:46,884 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-20 12:32:46,885 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-20 12:32:47,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:32:47,274 INFO L321 Elim1Store]: treesize reduction 109, result has 9.2 percent of original size [2022-11-20 12:32:47,275 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 122 treesize of output 140 [2022-11-20 12:32:47,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:32:47,323 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 101 treesize of output 90 [2022-11-20 12:32:47,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:32:47,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:32:47,386 INFO L321 Elim1Store]: treesize reduction 305, result has 8.1 percent of original size [2022-11-20 12:32:47,388 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 84 treesize of output 84 [2022-11-20 12:32:47,426 INFO L321 Elim1Store]: treesize reduction 8, result has 75.8 percent of original size [2022-11-20 12:32:47,427 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 34 [2022-11-20 12:32:47,442 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 35 [2022-11-20 12:32:48,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:32:48,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:32:48,640 INFO L321 Elim1Store]: treesize reduction 8, result has 86.9 percent of original size [2022-11-20 12:32:48,645 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 11324442 treesize of output 11077645 [2022-11-20 12:34:20,377 WARN L233 SmtUtils]: Spent 1.53m on a formula simplification. DAG size of input: 2138 DAG size of output: 2138 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-20 12:35:04,499 WARN L233 SmtUtils]: Spent 44.10s on a formula simplification that was a NOOP. DAG size: 2134 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-20 12:35:04,679 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10948886 treesize of output 10367254 [2022-11-20 12:35:47,247 WARN L233 SmtUtils]: Spent 42.56s on a formula simplification that was a NOOP. DAG size: 2133 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-20 12:35:47,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:35:47,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:35:47,827 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:35:47,827 INFO L350 Elim1Store]: Elim1 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 5 new quantified variables, introduced 7 case distinctions, treesize of input 1212 treesize of output 884 [2022-11-20 12:36:29,668 WARN L233 SmtUtils]: Spent 41.84s on a formula simplification that was a NOOP. DAG size: 2138 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-20 12:37:54,845 WARN L233 SmtUtils]: Spent 42.85s on a formula simplification that was a NOOP. DAG size: 2134 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-20 12:42:18,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:42:18,727 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 1562 treesize of output 1514 [2022-11-20 12:42:18,834 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:42:18,834 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:42:19,136 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:42:19,137 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 118 treesize of output 122 [2022-11-20 12:42:19,154 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:42:19,154 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 115 treesize of output 131 [2022-11-20 12:42:19,188 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 1 [2022-11-20 12:42:22,021 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 12:42:22,027 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:42:22,027 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 58 treesize of output 64 [2022-11-20 12:42:22,034 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 12:42:22,042 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:42:22,042 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 45 treesize of output 51 [2022-11-20 12:42:22,052 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 12:42:22,053 INFO L350 Elim1Store]: Elim1 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 104 treesize of output 74 [2022-11-20 12:42:22,062 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 12:42:22,068 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:42:22,068 INFO L350 Elim1Store]: Elim1 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 1 case distinctions, treesize of input 776 treesize of output 730 [2022-11-20 12:42:22,111 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 552 treesize of output 520 [2022-11-20 12:42:22,122 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 642 treesize of output 562 [2022-11-20 12:42:22,143 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:42:22,143 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 568 treesize of output 550 [2022-11-20 12:42:22,161 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 440 treesize of output 400 [2022-11-20 12:42:22,172 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 509 treesize of output 471 [2022-11-20 12:42:22,345 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 12:42:22,351 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:42:22,354 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 58 treesize of output 51 [2022-11-20 12:42:22,361 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 12:42:22,365 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:42:22,365 INFO L350 Elim1Store]: Elim1 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 1 case distinctions, treesize of input 639 treesize of output 517 [2022-11-20 12:42:22,387 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 487 treesize of output 397 [2022-11-20 12:42:22,396 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 194 treesize of output 178 [2022-11-20 12:42:22,404 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 372 treesize of output 364 [2022-11-20 12:42:22,411 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 364 treesize of output 332 [2022-11-20 12:42:22,419 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 332 treesize of output 312 [2022-11-20 12:42:22,731 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:42:22,731 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1836841807] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:42:22,731 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:42:22,731 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 22 [2022-11-20 12:42:22,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229943477] [2022-11-20 12:42:22,732 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:42:22,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-20 12:42:22,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:42:22,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-20 12:42:22,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=364, Unknown=9, NotChecked=0, Total=462 [2022-11-20 12:42:22,734 INFO L87 Difference]: Start difference. First operand 140 states and 157 transitions. Second operand has 22 states, 22 states have (on average 3.909090909090909) internal successors, (86), 22 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:42:23,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:42:23,703 INFO L93 Difference]: Finished difference Result 230 states and 256 transitions. [2022-11-20 12:42:23,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 12:42:23,703 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.909090909090909) internal successors, (86), 22 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2022-11-20 12:42:23,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:42:23,704 INFO L225 Difference]: With dead ends: 230 [2022-11-20 12:42:23,705 INFO L226 Difference]: Without dead ends: 170 [2022-11-20 12:42:23,707 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=159, Invalid=687, Unknown=24, NotChecked=0, Total=870 [2022-11-20 12:42:23,708 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 146 mSDsluCounter, 596 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 655 SdHoareTripleChecker+Invalid, 425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 220 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 12:42:23,708 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 655 Invalid, 425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 193 Invalid, 0 Unknown, 220 Unchecked, 0.2s Time] [2022-11-20 12:42:23,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2022-11-20 12:42:23,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 142. [2022-11-20 12:42:23,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 138 states have (on average 1.1521739130434783) internal successors, (159), 141 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:42:23,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 159 transitions. [2022-11-20 12:42:23,739 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 159 transitions. Word has length 36 [2022-11-20 12:42:23,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:42:23,739 INFO L495 AbstractCegarLoop]: Abstraction has 142 states and 159 transitions. [2022-11-20 12:42:23,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.909090909090909) internal successors, (86), 22 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:42:23,740 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 159 transitions. [2022-11-20 12:42:23,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-20 12:42:23,740 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:42:23,740 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-20 12:42:23,752 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c95c1a45-6d0a-4ade-acc5-70e84cc88d62/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-20 12:42:23,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c95c1a45-6d0a-4ade-acc5-70e84cc88d62/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-11-20 12:42:23,947 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2022-11-20 12:42:23,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:42:23,948 INFO L85 PathProgramCache]: Analyzing trace with hash 878042536, now seen corresponding path program 1 times [2022-11-20 12:42:23,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:42:23,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470364529] [2022-11-20 12:42:23,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:42:23,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:42:24,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:42:26,416 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:42:26,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:42:26,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470364529] [2022-11-20 12:42:26,417 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470364529] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:42:26,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1501692224] [2022-11-20 12:42:26,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:42:26,417 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:42:26,417 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c95c1a45-6d0a-4ade-acc5-70e84cc88d62/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:42:26,418 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c95c1a45-6d0a-4ade-acc5-70e84cc88d62/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:42:26,421 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c95c1a45-6d0a-4ade-acc5-70e84cc88d62/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-20 12:42:26,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:42:26,645 INFO L263 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 84 conjunts are in the unsatisfiable core [2022-11-20 12:42:26,651 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:42:26,655 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-20 12:42:26,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:42:26,774 INFO L321 Elim1Store]: treesize reduction 23, result has 56.6 percent of original size [2022-11-20 12:42:26,774 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 383 treesize of output 326 [2022-11-20 12:42:26,882 INFO L321 Elim1Store]: treesize reduction 23, result has 56.6 percent of original size [2022-11-20 12:42:26,883 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 491 treesize of output 404 [2022-11-20 12:42:26,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:42:26,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:42:26,999 INFO L321 Elim1Store]: treesize reduction 566, result has 5.4 percent of original size [2022-11-20 12:42:26,999 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 368 treesize of output 525 [2022-11-20 12:42:27,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:42:27,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:42:27,139 INFO L321 Elim1Store]: treesize reduction 404, result has 5.4 percent of original size [2022-11-20 12:42:27,139 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 416 treesize of output 478 [2022-11-20 12:42:27,162 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 107 treesize of output 67 [2022-11-20 12:42:27,178 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 12:42:27,182 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 123 treesize of output 82 [2022-11-20 12:42:27,203 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 15 [2022-11-20 12:42:27,222 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 15 [2022-11-20 12:42:27,273 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-20 12:42:27,273 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-20 12:42:27,298 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 15 [2022-11-20 12:42:27,384 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 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 33 treesize of output 23 [2022-11-20 12:42:27,445 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 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 33 treesize of output 23 [2022-11-20 12:42:27,478 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2022-11-20 12:42:27,600 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 13 [2022-11-20 12:42:27,609 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 3 [2022-11-20 12:42:27,657 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2022-11-20 12:42:27,703 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 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 42 treesize of output 78 [2022-11-20 12:42:27,771 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 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 42 treesize of output 78 [2022-11-20 12:42:27,863 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 3 [2022-11-20 12:42:27,937 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 3 [2022-11-20 12:42:28,016 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 54 treesize of output 45 [2022-11-20 12:42:28,025 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 3 [2022-11-20 12:42:28,056 INFO L321 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2022-11-20 12:42:28,056 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 84 treesize of output 68 [2022-11-20 12:42:28,071 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 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 66 [2022-11-20 12:42:28,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:42:28,095 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2022-11-20 12:42:28,097 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-20 12:42:28,136 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 12:42:28,140 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 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 42 treesize of output 84 [2022-11-20 12:42:28,193 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2022-11-20 12:42:28,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:42:28,222 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2022-11-20 12:42:30,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:42:30,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:42:30,694 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 109 treesize of output 81 [2022-11-20 12:42:30,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:42:30,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:42:30,709 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 44 [2022-11-20 12:42:30,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:42:30,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:42:30,722 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 120 treesize of output 111 [2022-11-20 12:42:30,727 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 12:42:30,729 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 7 [2022-11-20 12:42:30,732 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 3 [2022-11-20 12:42:30,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:42:30,748 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-20 12:42:30,748 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 77 treesize of output 77 [2022-11-20 12:42:30,767 INFO L321 Elim1Store]: treesize reduction 8, result has 65.2 percent of original size [2022-11-20 12:42:30,767 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 24 [2022-11-20 12:42:31,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:42:31,059 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 12:42:31,060 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 12:42:31,084 INFO L321 Elim1Store]: treesize reduction 50, result has 33.3 percent of original size [2022-11-20 12:42:31,085 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 125 treesize of output 98 [2022-11-20 12:42:31,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:42:31,096 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 101 treesize of output 88 [2022-11-20 12:42:32,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:42:32,023 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 12:42:32,023 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 12:42:32,039 INFO L321 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2022-11-20 12:42:32,039 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 5 case distinctions, treesize of input 123 treesize of output 71 [2022-11-20 12:42:32,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:42:32,053 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 26 [2022-11-20 12:42:32,060 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:42:32,060 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:42:32,616 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:42:32,617 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 175 treesize of output 169 [2022-11-20 12:42:32,626 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:42:32,626 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 163 treesize of output 157 [2022-11-20 12:42:39,983 WARN L233 SmtUtils]: Spent 6.94s on a formula simplification that was a NOOP. DAG size: 68 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 12:43:00,359 WARN L233 SmtUtils]: Spent 10.94s on a formula simplification. DAG size of input: 46 DAG size of output: 36 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-20 12:43:00,359 INFO L321 Elim1Store]: treesize reduction 62, result has 54.4 percent of original size [2022-11-20 12:43:00,360 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 43597 treesize of output 34919 [2022-11-20 12:43:43,109 WARN L233 SmtUtils]: Spent 42.63s on a formula simplification. DAG size of input: 46 DAG size of output: 36 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-20 12:43:43,109 INFO L321 Elim1Store]: treesize reduction 62, result has 54.4 percent of original size [2022-11-20 12:43:43,111 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 115629 treesize of output 84375