./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_either_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_either_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 355537246d5dfb9690a92cc5d0cbf014736bcc62122f38f5559ea0fbf5331d1c --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-22 14:47:41,681 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-22 14:47:41,683 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-22 14:47:41,751 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-22 14:47:41,752 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-22 14:47:41,758 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-22 14:47:41,760 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-22 14:47:41,765 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-22 14:47:41,769 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-22 14:47:41,778 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-22 14:47:41,780 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-22 14:47:41,781 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-22 14:47:41,782 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-22 14:47:41,783 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-22 14:47:41,785 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-22 14:47:41,787 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-22 14:47:41,792 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-22 14:47:41,794 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-22 14:47:41,797 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-22 14:47:41,809 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-22 14:47:41,811 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-22 14:47:41,814 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-22 14:47:41,823 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-22 14:47:41,825 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-22 14:47:41,830 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-22 14:47:41,830 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-22 14:47:41,831 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-22 14:47:41,834 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-22 14:47:41,834 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-22 14:47:41,836 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-22 14:47:41,837 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-22 14:47:41,839 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-22 14:47:41,841 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-22 14:47:41,843 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-22 14:47:41,845 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-22 14:47:41,845 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-22 14:47:41,846 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-22 14:47:41,847 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-22 14:47:41,847 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-22 14:47:41,848 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-22 14:47:41,849 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-22 14:47:41,850 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-22 14:47:41,914 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-22 14:47:41,914 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-22 14:47:41,915 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-22 14:47:41,916 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-22 14:47:41,917 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-22 14:47:41,918 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-22 14:47:41,918 INFO L138 SettingsManager]: * Use SBE=true [2021-11-22 14:47:41,918 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-22 14:47:41,919 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-22 14:47:41,919 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-22 14:47:41,920 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-22 14:47:41,921 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-22 14:47:41,921 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-22 14:47:41,921 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-22 14:47:41,922 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-22 14:47:41,922 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-22 14:47:41,922 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-22 14:47:41,922 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-22 14:47:41,923 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-22 14:47:41,923 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 14:47:41,923 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-22 14:47:41,924 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-22 14:47:41,924 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-22 14:47:41,924 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-22 14:47:41,924 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-22 14:47:41,925 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-22 14:47:41,925 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-22 14:47:41,925 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-22 14:47:41,926 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-22 14:47:41,927 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_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 355537246d5dfb9690a92cc5d0cbf014736bcc62122f38f5559ea0fbf5331d1c [2021-11-22 14:47:42,317 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-22 14:47:42,362 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-22 14:47:42,365 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-22 14:47:42,367 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-22 14:47:42,369 INFO L275 PluginConnector]: CDTParser initialized [2021-11-22 14:47:42,370 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/../../sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_either_harness.i [2021-11-22 14:47:42,450 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/data/eb181c33a/6c5a0568baab4a0a98f7f40574baa05e/FLAG62da9c2ee [2021-11-22 14:47:43,527 INFO L306 CDTParser]: Found 1 translation units. [2021-11-22 14:47:43,528 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_either_harness.i [2021-11-22 14:47:43,580 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/data/eb181c33a/6c5a0568baab4a0a98f7f40574baa05e/FLAG62da9c2ee [2021-11-22 14:47:43,886 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/data/eb181c33a/6c5a0568baab4a0a98f7f40574baa05e [2021-11-22 14:47:43,890 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-22 14:47:43,891 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-22 14:47:43,894 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-22 14:47:43,894 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-22 14:47:43,905 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-22 14:47:43,906 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:47:43" (1/1) ... [2021-11-22 14:47:43,907 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15a7ec9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:47:43, skipping insertion in model container [2021-11-22 14:47:43,908 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:47:43" (1/1) ... [2021-11-22 14:47:43,916 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-22 14:47:44,048 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-22 14:47:44,375 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_either_harness.i[4506,4519] [2021-11-22 14:47:44,383 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_either_harness.i[4566,4579] [2021-11-22 14:47:45,482 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 14:47:45,483 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 14:47:45,484 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 14:47:45,485 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 14:47:45,487 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 14:47:45,504 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 14:47:45,505 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 14:47:45,507 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 14:47:45,508 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 14:47:45,511 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 14:47:45,512 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 14:47:45,513 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 14:47:45,514 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 14:47:45,964 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-22 14:47:45,966 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-22 14:47:45,968 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-22 14:47:45,969 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-22 14:47:45,971 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-22 14:47:45,972 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-22 14:47:45,973 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-22 14:47:45,974 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-22 14:47:45,975 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-22 14:47:45,975 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-22 14:47:46,176 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-22 14:47:46,212 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 14:47:46,218 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 14:47:46,225 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 14:47:46,241 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 14:47:46,364 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 14:47:46,365 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 14:47:46,366 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 14:47:46,367 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 14:47:46,367 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 14:47:46,368 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 14:47:46,369 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 14:47:46,372 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 14:47:46,401 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 14:47:46,402 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 14:47:46,402 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 14:47:46,402 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 14:47:46,403 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 14:47:46,406 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 14:47:46,406 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 14:47:46,407 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 14:47:46,407 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 14:47:46,419 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 14:47:46,428 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 14:47:46,435 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 14:47:46,442 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 14:47:46,443 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 14:47:46,461 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 14:47:46,520 INFO L203 MainTranslator]: Completed pre-run [2021-11-22 14:47:46,544 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_either_harness.i[4506,4519] [2021-11-22 14:47:46,545 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_either_harness.i[4566,4579] [2021-11-22 14:47:46,617 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 14:47:46,617 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 14:47:46,618 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 14:47:46,618 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 14:47:46,619 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 14:47:46,633 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 14:47:46,633 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 14:47:46,635 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 14:47:46,635 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 14:47:46,637 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 14:47:46,638 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 14:47:46,639 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 14:47:46,639 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 14:47:46,701 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-22 14:47:46,702 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-22 14:47:46,703 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-22 14:47:46,704 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-22 14:47:46,705 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-22 14:47:46,706 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-22 14:47:46,707 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-22 14:47:46,708 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-22 14:47:46,708 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-22 14:47:46,709 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-22 14:47:46,748 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-22 14:47:46,778 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 14:47:46,780 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 14:47:46,781 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 14:47:46,787 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 14:47:46,825 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 14:47:46,826 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 14:47:46,826 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 14:47:46,827 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 14:47:46,827 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 14:47:46,828 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 14:47:46,829 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 14:47:46,829 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 14:47:46,830 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 14:47:46,831 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 14:47:46,831 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 14:47:46,831 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 14:47:46,832 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 14:47:46,833 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 14:47:46,833 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 14:47:46,835 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 14:47:46,835 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 14:47:46,837 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 14:47:46,838 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 14:47:46,844 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 14:47:46,845 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 14:47:46,845 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 14:47:46,864 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 14:47:47,192 INFO L208 MainTranslator]: Completed translation [2021-11-22 14:47:47,193 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:47:47 WrapperNode [2021-11-22 14:47:47,193 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-22 14:47:47,195 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-22 14:47:47,195 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-22 14:47:47,195 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-22 14:47:47,206 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:47:47" (1/1) ... [2021-11-22 14:47:47,367 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:47:47" (1/1) ... [2021-11-22 14:47:47,741 INFO L137 Inliner]: procedures = 697, calls = 1887, calls flagged for inlining = 790, calls inlined = 804, statements flattened = 10845 [2021-11-22 14:47:47,742 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-22 14:47:47,743 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-22 14:47:47,743 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-22 14:47:47,743 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-22 14:47:47,763 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:47:47" (1/1) ... [2021-11-22 14:47:47,763 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:47:47" (1/1) ... [2021-11-22 14:47:47,821 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:47:47" (1/1) ... [2021-11-22 14:47:47,821 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:47:47" (1/1) ... [2021-11-22 14:47:48,085 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:47:47" (1/1) ... [2021-11-22 14:47:48,140 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:47:47" (1/1) ... [2021-11-22 14:47:48,183 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:47:47" (1/1) ... [2021-11-22 14:47:48,251 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-22 14:47:48,252 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-22 14:47:48,252 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-22 14:47:48,252 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-22 14:47:48,253 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:47:47" (1/1) ... [2021-11-22 14:47:48,263 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 14:47:48,277 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 14:47:48,294 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-22 14:47:48,315 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-22 14:47:48,363 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-22 14:47:48,363 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-22 14:47:48,363 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-22 14:47:48,364 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-22 14:47:48,364 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-22 14:47:48,364 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-22 14:47:48,365 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-22 14:47:48,365 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-22 14:47:48,365 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-22 14:47:48,365 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-22 14:47:48,365 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-22 14:47:48,366 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-22 14:47:49,009 INFO L236 CfgBuilder]: Building ICFG [2021-11-22 14:47:49,011 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-22 14:47:56,222 INFO L277 CfgBuilder]: Performing block encoding [2021-11-22 14:47:56,263 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-22 14:47:56,263 INFO L301 CfgBuilder]: Removed 29 assume(true) statements. [2021-11-22 14:47:56,270 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:47:56 BoogieIcfgContainer [2021-11-22 14:47:56,271 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-22 14:47:56,277 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-22 14:47:56,278 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-22 14:47:56,282 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-22 14:47:56,283 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 02:47:43" (1/3) ... [2021-11-22 14:47:56,284 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@782c362c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:47:56, skipping insertion in model container [2021-11-22 14:47:56,286 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:47:47" (2/3) ... [2021-11-22 14:47:56,286 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@782c362c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:47:56, skipping insertion in model container [2021-11-22 14:47:56,286 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:47:56" (3/3) ... [2021-11-22 14:47:56,288 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_priority_queue_s_sift_either_harness.i [2021-11-22 14:47:56,304 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-22 14:47:56,305 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 54 error locations. [2021-11-22 14:47:56,399 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-22 14:47:56,419 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-22 14:47:56,419 INFO L340 AbstractCegarLoop]: Starting to check reachability of 54 error locations. [2021-11-22 14:47:56,593 INFO L276 IsEmpty]: Start isEmpty. Operand has 2074 states, 2019 states have (on average 1.4244675581971273) internal successors, (2876), 2073 states have internal predecessors, (2876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:47:56,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-22 14:47:56,613 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:47:56,614 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:47:56,615 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr51ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-11-22 14:47:56,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:47:56,626 INFO L85 PathProgramCache]: Analyzing trace with hash -386558075, now seen corresponding path program 1 times [2021-11-22 14:47:56,639 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:47:56,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803314679] [2021-11-22 14:47:56,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:47:56,641 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:47:57,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:47:57,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:47:57,427 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:47:57,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803314679] [2021-11-22 14:47:57,428 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [803314679] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:47:57,428 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:47:57,428 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-22 14:47:57,430 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009180284] [2021-11-22 14:47:57,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:47:57,436 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-22 14:47:57,437 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:47:57,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-22 14:47:57,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-22 14:47:57,485 INFO L87 Difference]: Start difference. First operand has 2074 states, 2019 states have (on average 1.4244675581971273) internal successors, (2876), 2073 states have internal predecessors, (2876), 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 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:47:57,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:47:57,662 INFO L93 Difference]: Finished difference Result 4141 states and 5744 transitions. [2021-11-22 14:47:57,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-22 14:47:57,665 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 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 41 [2021-11-22 14:47:57,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:47:57,704 INFO L225 Difference]: With dead ends: 4141 [2021-11-22 14:47:57,705 INFO L226 Difference]: Without dead ends: 2068 [2021-11-22 14:47:57,719 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-22 14:47:57,726 INFO L933 BasicCegarLoop]: 2672 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2672 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 14:47:57,733 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 2672 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 14:47:57,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2068 states. [2021-11-22 14:47:57,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2068 to 2068. [2021-11-22 14:47:57,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2068 states, 2014 states have (on average 1.3242303872889771) internal successors, (2667), 2067 states have internal predecessors, (2667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:47:57,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2068 states to 2068 states and 2667 transitions. [2021-11-22 14:47:57,908 INFO L78 Accepts]: Start accepts. Automaton has 2068 states and 2667 transitions. Word has length 41 [2021-11-22 14:47:57,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:47:57,909 INFO L470 AbstractCegarLoop]: Abstraction has 2068 states and 2667 transitions. [2021-11-22 14:47:57,909 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:47:57,910 INFO L276 IsEmpty]: Start isEmpty. Operand 2068 states and 2667 transitions. [2021-11-22 14:47:57,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-22 14:47:57,913 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:47:57,914 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:47:57,914 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-22 14:47:57,914 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr51ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-11-22 14:47:57,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:47:57,915 INFO L85 PathProgramCache]: Analyzing trace with hash 1274614597, now seen corresponding path program 1 times [2021-11-22 14:47:57,916 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:47:57,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890899268] [2021-11-22 14:47:57,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:47:57,917 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:47:58,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:47:58,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:47:58,233 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:47:58,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890899268] [2021-11-22 14:47:58,233 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890899268] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:47:58,234 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:47:58,234 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 14:47:58,234 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303158736] [2021-11-22 14:47:58,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:47:58,236 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 14:47:58,237 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:47:58,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 14:47:58,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-22 14:47:58,238 INFO L87 Difference]: Start difference. First operand 2068 states and 2667 transitions. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:47:58,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:47:58,535 INFO L93 Difference]: Finished difference Result 4058 states and 5232 transitions. [2021-11-22 14:47:58,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 14:47:58,536 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 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 41 [2021-11-22 14:47:58,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:47:58,550 INFO L225 Difference]: With dead ends: 4058 [2021-11-22 14:47:58,550 INFO L226 Difference]: Without dead ends: 2070 [2021-11-22 14:47:58,554 INFO L932 BasicCegarLoop]: 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 [2021-11-22 14:47:58,556 INFO L933 BasicCegarLoop]: 2649 mSDtfsCounter, 2646 mSDsluCounter, 2378 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2646 SdHoareTripleChecker+Valid, 5027 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 14:47:58,558 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2646 Valid, 5027 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 14:47:58,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2070 states. [2021-11-22 14:47:58,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2070 to 2068. [2021-11-22 14:47:58,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2068 states, 2014 states have (on average 1.3227408142999006) internal successors, (2664), 2067 states have internal predecessors, (2664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:47:58,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2068 states to 2068 states and 2664 transitions. [2021-11-22 14:47:58,652 INFO L78 Accepts]: Start accepts. Automaton has 2068 states and 2664 transitions. Word has length 41 [2021-11-22 14:47:58,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:47:58,655 INFO L470 AbstractCegarLoop]: Abstraction has 2068 states and 2664 transitions. [2021-11-22 14:47:58,656 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:47:58,658 INFO L276 IsEmpty]: Start isEmpty. Operand 2068 states and 2664 transitions. [2021-11-22 14:47:58,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-22 14:47:58,666 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:47:58,666 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:47:58,667 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-22 14:47:58,667 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr51ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-11-22 14:47:58,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:47:58,668 INFO L85 PathProgramCache]: Analyzing trace with hash -671062553, now seen corresponding path program 1 times [2021-11-22 14:47:58,668 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:47:58,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931082825] [2021-11-22 14:47:58,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:47:58,672 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:47:58,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:47:59,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:47:59,101 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:47:59,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931082825] [2021-11-22 14:47:59,102 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931082825] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:47:59,102 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:47:59,102 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 14:47:59,104 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591594879] [2021-11-22 14:47:59,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:47:59,106 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 14:47:59,106 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:47:59,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 14:47:59,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-22 14:47:59,109 INFO L87 Difference]: Start difference. First operand 2068 states and 2664 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 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) [2021-11-22 14:48:00,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:48:00,763 INFO L93 Difference]: Finished difference Result 5576 states and 7123 transitions. [2021-11-22 14:48:00,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 14:48:00,764 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 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 49 [2021-11-22 14:48:00,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:48:00,787 INFO L225 Difference]: With dead ends: 5576 [2021-11-22 14:48:00,788 INFO L226 Difference]: Without dead ends: 3556 [2021-11-22 14:48:00,795 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-22 14:48:00,801 INFO L933 BasicCegarLoop]: 2628 mSDtfsCounter, 6690 mSDsluCounter, 3891 mSDsCounter, 0 mSdLazyCounter, 526 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6690 SdHoareTripleChecker+Valid, 6519 SdHoareTripleChecker+Invalid, 550 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 526 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-22 14:48:00,805 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6690 Valid, 6519 Invalid, 550 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 526 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-11-22 14:48:00,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3556 states. [2021-11-22 14:48:00,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3556 to 2068. [2021-11-22 14:48:00,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2068 states, 2014 states have (on average 1.3212512413108242) internal successors, (2661), 2067 states have internal predecessors, (2661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:48:00,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2068 states to 2068 states and 2661 transitions. [2021-11-22 14:48:00,916 INFO L78 Accepts]: Start accepts. Automaton has 2068 states and 2661 transitions. Word has length 49 [2021-11-22 14:48:00,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:48:00,917 INFO L470 AbstractCegarLoop]: Abstraction has 2068 states and 2661 transitions. [2021-11-22 14:48:00,917 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 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) [2021-11-22 14:48:00,918 INFO L276 IsEmpty]: Start isEmpty. Operand 2068 states and 2661 transitions. [2021-11-22 14:48:00,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-22 14:48:00,919 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:48:00,920 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:48:00,920 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-22 14:48:00,920 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr51ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-11-22 14:48:00,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:48:00,921 INFO L85 PathProgramCache]: Analyzing trace with hash 2141617967, now seen corresponding path program 1 times [2021-11-22 14:48:00,922 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:48:00,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310665283] [2021-11-22 14:48:00,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:48:00,922 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:48:01,037 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 14:48:01,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1943013452] [2021-11-22 14:48:01,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:48:01,038 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 14:48:01,038 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 14:48:01,043 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 14:48:01,059 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-22 14:48:01,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:48:01,728 INFO L263 TraceCheckSpWp]: Trace formula consists of 2208 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-22 14:48:01,739 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 14:48:01,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:48:01,931 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 14:48:01,932 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:48:01,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310665283] [2021-11-22 14:48:01,932 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 14:48:01,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1943013452] [2021-11-22 14:48:01,933 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1943013452] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:48:01,933 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:48:01,933 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 14:48:01,934 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678922049] [2021-11-22 14:48:01,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:48:01,935 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 14:48:01,935 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:48:01,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 14:48:01,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 14:48:01,936 INFO L87 Difference]: Start difference. First operand 2068 states and 2661 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:48:02,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:48:02,035 INFO L93 Difference]: Finished difference Result 2191 states and 2827 transitions. [2021-11-22 14:48:02,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 14:48:02,035 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 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 65 [2021-11-22 14:48:02,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:48:02,049 INFO L225 Difference]: With dead ends: 2191 [2021-11-22 14:48:02,049 INFO L226 Difference]: Without dead ends: 2069 [2021-11-22 14:48:02,051 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 14:48:02,052 INFO L933 BasicCegarLoop]: 2660 mSDtfsCounter, 0 mSDsluCounter, 2654 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 5314 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 14:48:02,053 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 5314 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 14:48:02,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2069 states. [2021-11-22 14:48:02,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2069 to 2069. [2021-11-22 14:48:02,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2069 states, 2015 states have (on average 1.3210918114143921) internal successors, (2662), 2068 states have internal predecessors, (2662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:48:02,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2069 states to 2069 states and 2662 transitions. [2021-11-22 14:48:02,204 INFO L78 Accepts]: Start accepts. Automaton has 2069 states and 2662 transitions. Word has length 65 [2021-11-22 14:48:02,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:48:02,205 INFO L470 AbstractCegarLoop]: Abstraction has 2069 states and 2662 transitions. [2021-11-22 14:48:02,206 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:48:02,206 INFO L276 IsEmpty]: Start isEmpty. Operand 2069 states and 2662 transitions. [2021-11-22 14:48:02,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-22 14:48:02,207 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:48:02,208 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:48:02,255 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-22 14:48:02,435 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 14:48:02,436 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-11-22 14:48:02,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:48:02,437 INFO L85 PathProgramCache]: Analyzing trace with hash 68145820, now seen corresponding path program 1 times [2021-11-22 14:48:02,437 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:48:02,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335224019] [2021-11-22 14:48:02,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:48:02,437 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:48:02,512 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 14:48:02,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1493006547] [2021-11-22 14:48:02,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:48:02,513 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 14:48:02,513 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 14:48:02,514 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 14:48:02,517 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-22 14:48:03,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:48:03,106 INFO L263 TraceCheckSpWp]: Trace formula consists of 2270 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-22 14:48:03,118 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 14:48:03,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:48:03,338 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 14:48:03,339 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:48:03,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335224019] [2021-11-22 14:48:03,339 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 14:48:03,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1493006547] [2021-11-22 14:48:03,340 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1493006547] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:48:03,340 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:48:03,340 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 14:48:03,341 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652768810] [2021-11-22 14:48:03,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:48:03,343 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-22 14:48:03,343 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:48:03,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-22 14:48:03,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-22 14:48:03,344 INFO L87 Difference]: Start difference. First operand 2069 states and 2662 transitions. Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:48:04,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:48:04,595 INFO L93 Difference]: Finished difference Result 5630 states and 7200 transitions. [2021-11-22 14:48:04,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-22 14:48:04,596 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 5 states have internal predecessors, (73), 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 73 [2021-11-22 14:48:04,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:48:04,619 INFO L225 Difference]: With dead ends: 5630 [2021-11-22 14:48:04,619 INFO L226 Difference]: Without dead ends: 3640 [2021-11-22 14:48:04,623 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-11-22 14:48:04,624 INFO L933 BasicCegarLoop]: 2535 mSDtfsCounter, 11687 mSDsluCounter, 4564 mSDsCounter, 0 mSdLazyCounter, 407 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11687 SdHoareTripleChecker+Valid, 7099 SdHoareTripleChecker+Invalid, 424 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 407 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-22 14:48:04,625 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11687 Valid, 7099 Invalid, 424 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 407 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-22 14:48:04,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3640 states. [2021-11-22 14:48:04,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3640 to 2069. [2021-11-22 14:48:04,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2069 states, 2015 states have (on average 1.3196029776674938) internal successors, (2659), 2068 states have internal predecessors, (2659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:48:04,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2069 states to 2069 states and 2659 transitions. [2021-11-22 14:48:04,799 INFO L78 Accepts]: Start accepts. Automaton has 2069 states and 2659 transitions. Word has length 73 [2021-11-22 14:48:04,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:48:04,800 INFO L470 AbstractCegarLoop]: Abstraction has 2069 states and 2659 transitions. [2021-11-22 14:48:04,800 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:48:04,800 INFO L276 IsEmpty]: Start isEmpty. Operand 2069 states and 2659 transitions. [2021-11-22 14:48:04,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-22 14:48:04,802 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:48:04,802 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:48:04,855 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-22 14:48:05,015 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 14:48:05,016 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-11-22 14:48:05,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:48:05,017 INFO L85 PathProgramCache]: Analyzing trace with hash -1413976904, now seen corresponding path program 1 times [2021-11-22 14:48:05,017 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:48:05,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263362368] [2021-11-22 14:48:05,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:48:05,017 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:48:05,088 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 14:48:05,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1943415448] [2021-11-22 14:48:05,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:48:05,089 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 14:48:05,089 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 14:48:05,090 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 14:48:05,120 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-22 14:48:05,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:48:05,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 2375 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-22 14:48:05,760 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 14:48:06,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:48:06,038 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 14:48:06,038 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:48:06,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263362368] [2021-11-22 14:48:06,038 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 14:48:06,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1943415448] [2021-11-22 14:48:06,043 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1943415448] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:48:06,043 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:48:06,043 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-22 14:48:06,043 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031992418] [2021-11-22 14:48:06,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:48:06,044 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-22 14:48:06,044 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:48:06,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-22 14:48:06,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-22 14:48:06,045 INFO L87 Difference]: Start difference. First operand 2069 states and 2659 transitions. Second operand has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:48:08,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:48:08,279 INFO L93 Difference]: Finished difference Result 8547 states and 10833 transitions. [2021-11-22 14:48:08,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-22 14:48:08,281 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 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 97 [2021-11-22 14:48:08,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:48:08,331 INFO L225 Difference]: With dead ends: 8547 [2021-11-22 14:48:08,331 INFO L226 Difference]: Without dead ends: 6541 [2021-11-22 14:48:08,339 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-11-22 14:48:08,341 INFO L933 BasicCegarLoop]: 2601 mSDtfsCounter, 14460 mSDsluCounter, 8396 mSDsCounter, 0 mSdLazyCounter, 754 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14460 SdHoareTripleChecker+Valid, 10997 SdHoareTripleChecker+Invalid, 815 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 754 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-11-22 14:48:08,342 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14460 Valid, 10997 Invalid, 815 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [61 Valid, 754 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-11-22 14:48:08,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6541 states. [2021-11-22 14:48:08,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6541 to 2069. [2021-11-22 14:48:08,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2069 states, 2015 states have (on average 1.3181141439205954) internal successors, (2656), 2068 states have internal predecessors, (2656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:48:08,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2069 states to 2069 states and 2656 transitions. [2021-11-22 14:48:08,574 INFO L78 Accepts]: Start accepts. Automaton has 2069 states and 2656 transitions. Word has length 97 [2021-11-22 14:48:08,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:48:08,576 INFO L470 AbstractCegarLoop]: Abstraction has 2069 states and 2656 transitions. [2021-11-22 14:48:08,577 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:48:08,577 INFO L276 IsEmpty]: Start isEmpty. Operand 2069 states and 2656 transitions. [2021-11-22 14:48:08,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-22 14:48:08,587 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:48:08,587 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:48:08,639 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-22 14:48:08,803 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 14:48:08,804 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-11-22 14:48:08,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:48:08,805 INFO L85 PathProgramCache]: Analyzing trace with hash 889741424, now seen corresponding path program 1 times [2021-11-22 14:48:08,805 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:48:08,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52329269] [2021-11-22 14:48:08,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:48:08,805 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:48:09,014 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 14:48:09,015 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [410431558] [2021-11-22 14:48:09,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:48:09,025 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 14:48:09,026 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 14:48:09,027 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 14:48:09,033 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-22 14:48:09,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:48:09,636 INFO L263 TraceCheckSpWp]: Trace formula consists of 2557 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-22 14:48:09,644 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 14:48:09,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:48:09,953 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 14:48:09,953 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:48:09,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52329269] [2021-11-22 14:48:09,954 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 14:48:09,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [410431558] [2021-11-22 14:48:09,954 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [410431558] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:48:09,954 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:48:09,954 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 14:48:09,955 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690416971] [2021-11-22 14:48:09,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:48:09,956 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-22 14:48:09,957 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:48:09,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-22 14:48:09,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-22 14:48:09,958 INFO L87 Difference]: Start difference. First operand 2069 states and 2656 transitions. Second operand has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 5 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:48:10,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:48:10,648 INFO L93 Difference]: Finished difference Result 4474 states and 5732 transitions. [2021-11-22 14:48:10,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-22 14:48:10,651 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 5 states have internal predecessors, (113), 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 113 [2021-11-22 14:48:10,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:48:10,667 INFO L225 Difference]: With dead ends: 4474 [2021-11-22 14:48:10,668 INFO L226 Difference]: Without dead ends: 2601 [2021-11-22 14:48:10,672 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-11-22 14:48:10,673 INFO L933 BasicCegarLoop]: 2540 mSDtfsCounter, 10925 mSDsluCounter, 2157 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10925 SdHoareTripleChecker+Valid, 4697 SdHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-22 14:48:10,673 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10925 Valid, 4697 Invalid, 241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-22 14:48:10,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2601 states. [2021-11-22 14:48:10,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2601 to 2069. [2021-11-22 14:48:10,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2069 states, 2015 states have (on average 1.3166253101736973) internal successors, (2653), 2068 states have internal predecessors, (2653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:48:10,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2069 states to 2069 states and 2653 transitions. [2021-11-22 14:48:10,845 INFO L78 Accepts]: Start accepts. Automaton has 2069 states and 2653 transitions. Word has length 113 [2021-11-22 14:48:10,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:48:10,845 INFO L470 AbstractCegarLoop]: Abstraction has 2069 states and 2653 transitions. [2021-11-22 14:48:10,846 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 5 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:48:10,846 INFO L276 IsEmpty]: Start isEmpty. Operand 2069 states and 2653 transitions. [2021-11-22 14:48:10,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-11-22 14:48:10,848 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:48:10,848 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:48:10,887 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-11-22 14:48:11,075 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 14:48:11,076 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-11-22 14:48:11,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:48:11,076 INFO L85 PathProgramCache]: Analyzing trace with hash 1449292255, now seen corresponding path program 1 times [2021-11-22 14:48:11,076 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:48:11,077 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557636235] [2021-11-22 14:48:11,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:48:11,077 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:48:11,141 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 14:48:11,142 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2086796371] [2021-11-22 14:48:11,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:48:11,142 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 14:48:11,142 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 14:48:11,143 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 14:48:11,145 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-22 14:48:11,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:48:11,715 INFO L263 TraceCheckSpWp]: Trace formula consists of 2588 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-22 14:48:11,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 14:48:12,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:48:12,052 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 14:48:12,052 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:48:12,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557636235] [2021-11-22 14:48:12,052 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 14:48:12,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2086796371] [2021-11-22 14:48:12,053 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2086796371] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:48:12,053 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:48:12,053 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-22 14:48:12,053 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644290977] [2021-11-22 14:48:12,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:48:12,054 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-22 14:48:12,054 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:48:12,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-22 14:48:12,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-22 14:48:12,055 INFO L87 Difference]: Start difference. First operand 2069 states and 2653 transitions. Second operand has 6 states, 6 states have (on average 19.5) internal successors, (117), 6 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:48:13,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:48:13,407 INFO L93 Difference]: Finished difference Result 5392 states and 6863 transitions. [2021-11-22 14:48:13,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-22 14:48:13,408 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 19.5) internal successors, (117), 6 states have internal predecessors, (117), 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 117 [2021-11-22 14:48:13,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:48:13,423 INFO L225 Difference]: With dead ends: 5392 [2021-11-22 14:48:13,423 INFO L226 Difference]: Without dead ends: 3487 [2021-11-22 14:48:13,428 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-11-22 14:48:13,428 INFO L933 BasicCegarLoop]: 2588 mSDtfsCounter, 10972 mSDsluCounter, 4189 mSDsCounter, 0 mSdLazyCounter, 675 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10972 SdHoareTripleChecker+Valid, 6777 SdHoareTripleChecker+Invalid, 719 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 675 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-22 14:48:13,429 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10972 Valid, 6777 Invalid, 719 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 675 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-22 14:48:13,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3487 states. [2021-11-22 14:48:13,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3487 to 2069. [2021-11-22 14:48:13,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2069 states, 2015 states have (on average 1.315136476426799) internal successors, (2650), 2068 states have internal predecessors, (2650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:48:13,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2069 states to 2069 states and 2650 transitions. [2021-11-22 14:48:13,554 INFO L78 Accepts]: Start accepts. Automaton has 2069 states and 2650 transitions. Word has length 117 [2021-11-22 14:48:13,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:48:13,555 INFO L470 AbstractCegarLoop]: Abstraction has 2069 states and 2650 transitions. [2021-11-22 14:48:13,555 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.5) internal successors, (117), 6 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:48:13,555 INFO L276 IsEmpty]: Start isEmpty. Operand 2069 states and 2650 transitions. [2021-11-22 14:48:13,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-11-22 14:48:13,557 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:48:13,557 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:48:13,595 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-11-22 14:48:13,771 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 14:48:13,772 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-11-22 14:48:13,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:48:13,773 INFO L85 PathProgramCache]: Analyzing trace with hash -1177723141, now seen corresponding path program 1 times [2021-11-22 14:48:13,773 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:48:13,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555063152] [2021-11-22 14:48:13,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:48:13,773 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:48:13,839 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 14:48:13,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1585126300] [2021-11-22 14:48:13,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:48:13,840 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 14:48:13,840 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 14:48:13,841 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 14:48:13,859 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-22 14:48:14,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:48:14,358 INFO L263 TraceCheckSpWp]: Trace formula consists of 2679 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-22 14:48:14,363 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 14:48:14,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:48:14,695 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 14:48:14,695 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:48:14,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555063152] [2021-11-22 14:48:14,695 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 14:48:14,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1585126300] [2021-11-22 14:48:14,696 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1585126300] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:48:14,696 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:48:14,696 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-22 14:48:14,696 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440210097] [2021-11-22 14:48:14,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:48:14,697 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-22 14:48:14,698 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:48:14,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-22 14:48:14,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-22 14:48:14,700 INFO L87 Difference]: Start difference. First operand 2069 states and 2650 transitions. Second operand has 7 states, 7 states have (on average 17.857142857142858) internal successors, (125), 6 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:48:15,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:48:15,910 INFO L93 Difference]: Finished difference Result 5972 states and 7606 transitions. [2021-11-22 14:48:15,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-22 14:48:15,911 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.857142857142858) internal successors, (125), 6 states have internal predecessors, (125), 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 125 [2021-11-22 14:48:15,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:48:15,937 INFO L225 Difference]: With dead ends: 5972 [2021-11-22 14:48:15,937 INFO L226 Difference]: Without dead ends: 4098 [2021-11-22 14:48:15,941 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2021-11-22 14:48:15,942 INFO L933 BasicCegarLoop]: 2492 mSDtfsCounter, 19543 mSDsluCounter, 4218 mSDsCounter, 0 mSdLazyCounter, 406 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19543 SdHoareTripleChecker+Valid, 6710 SdHoareTripleChecker+Invalid, 457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 406 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-22 14:48:15,942 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19543 Valid, 6710 Invalid, 457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 406 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-22 14:48:15,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4098 states. [2021-11-22 14:48:16,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4098 to 2069. [2021-11-22 14:48:16,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2069 states, 2015 states have (on average 1.3136476426799006) internal successors, (2647), 2068 states have internal predecessors, (2647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:48:16,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2069 states to 2069 states and 2647 transitions. [2021-11-22 14:48:16,102 INFO L78 Accepts]: Start accepts. Automaton has 2069 states and 2647 transitions. Word has length 125 [2021-11-22 14:48:16,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:48:16,102 INFO L470 AbstractCegarLoop]: Abstraction has 2069 states and 2647 transitions. [2021-11-22 14:48:16,103 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.857142857142858) internal successors, (125), 6 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:48:16,103 INFO L276 IsEmpty]: Start isEmpty. Operand 2069 states and 2647 transitions. [2021-11-22 14:48:16,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-11-22 14:48:16,105 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:48:16,106 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:48:16,155 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-11-22 14:48:16,331 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 14:48:16,332 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-11-22 14:48:16,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:48:16,332 INFO L85 PathProgramCache]: Analyzing trace with hash -1276536404, now seen corresponding path program 1 times [2021-11-22 14:48:16,333 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:48:16,333 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895145621] [2021-11-22 14:48:16,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:48:16,333 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:48:16,418 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 14:48:16,418 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1747413728] [2021-11-22 14:48:16,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:48:16,419 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 14:48:16,419 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 14:48:16,420 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 14:48:16,439 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-22 14:48:17,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:48:17,030 INFO L263 TraceCheckSpWp]: Trace formula consists of 2729 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-22 14:48:17,035 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 14:48:17,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:48:17,420 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 14:48:17,420 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:48:17,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895145621] [2021-11-22 14:48:17,420 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 14:48:17,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1747413728] [2021-11-22 14:48:17,421 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1747413728] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:48:17,421 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:48:17,421 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-22 14:48:17,421 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335072106] [2021-11-22 14:48:17,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:48:17,422 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-22 14:48:17,422 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:48:17,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-22 14:48:17,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-22 14:48:17,423 INFO L87 Difference]: Start difference. First operand 2069 states and 2647 transitions. Second operand has 8 states, 8 states have (on average 17.125) internal successors, (137), 7 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:48:19,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:48:19,545 INFO L93 Difference]: Finished difference Result 6000 states and 7638 transitions. [2021-11-22 14:48:19,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-22 14:48:19,546 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 17.125) internal successors, (137), 7 states have internal predecessors, (137), 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 137 [2021-11-22 14:48:19,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:48:19,560 INFO L225 Difference]: With dead ends: 6000 [2021-11-22 14:48:19,561 INFO L226 Difference]: Without dead ends: 4110 [2021-11-22 14:48:19,565 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=116, Invalid=226, Unknown=0, NotChecked=0, Total=342 [2021-11-22 14:48:19,566 INFO L933 BasicCegarLoop]: 2429 mSDtfsCounter, 19977 mSDsluCounter, 5866 mSDsCounter, 0 mSdLazyCounter, 1022 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19977 SdHoareTripleChecker+Valid, 8295 SdHoareTripleChecker+Invalid, 1145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 1022 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-11-22 14:48:19,567 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19977 Valid, 8295 Invalid, 1145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 1022 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-11-22 14:48:19,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4110 states. [2021-11-22 14:48:19,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4110 to 2069. [2021-11-22 14:48:19,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2069 states, 2015 states have (on average 1.3121588089330025) internal successors, (2644), 2068 states have internal predecessors, (2644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:48:19,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2069 states to 2069 states and 2644 transitions. [2021-11-22 14:48:19,799 INFO L78 Accepts]: Start accepts. Automaton has 2069 states and 2644 transitions. Word has length 137 [2021-11-22 14:48:19,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:48:19,800 INFO L470 AbstractCegarLoop]: Abstraction has 2069 states and 2644 transitions. [2021-11-22 14:48:19,800 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.125) internal successors, (137), 7 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:48:19,801 INFO L276 IsEmpty]: Start isEmpty. Operand 2069 states and 2644 transitions. [2021-11-22 14:48:19,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-11-22 14:48:19,803 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:48:19,803 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:48:19,851 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-22 14:48:20,023 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 14:48:20,024 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-11-22 14:48:20,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:48:20,024 INFO L85 PathProgramCache]: Analyzing trace with hash -554968560, now seen corresponding path program 1 times [2021-11-22 14:48:20,025 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:48:20,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948959748] [2021-11-22 14:48:20,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:48:20,025 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:48:20,098 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 14:48:20,098 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [404058640] [2021-11-22 14:48:20,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:48:20,099 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 14:48:20,099 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 14:48:20,100 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 14:48:20,126 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-22 14:48:20,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:48:20,754 INFO L263 TraceCheckSpWp]: Trace formula consists of 2820 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-22 14:48:20,760 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 14:48:21,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:48:21,128 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 14:48:21,128 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:48:21,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948959748] [2021-11-22 14:48:21,129 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 14:48:21,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [404058640] [2021-11-22 14:48:21,129 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [404058640] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:48:21,129 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:48:21,130 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-22 14:48:21,130 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118676638] [2021-11-22 14:48:21,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:48:21,131 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-22 14:48:21,131 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:48:21,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-22 14:48:21,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-22 14:48:21,132 INFO L87 Difference]: Start difference. First operand 2069 states and 2644 transitions. Second operand has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 6 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:48:22,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:48:22,092 INFO L93 Difference]: Finished difference Result 5874 states and 7499 transitions. [2021-11-22 14:48:22,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-22 14:48:22,093 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 6 states have internal predecessors, (145), 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 145 [2021-11-22 14:48:22,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:48:22,103 INFO L225 Difference]: With dead ends: 5874 [2021-11-22 14:48:22,103 INFO L226 Difference]: Without dead ends: 4010 [2021-11-22 14:48:22,106 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2021-11-22 14:48:22,107 INFO L933 BasicCegarLoop]: 3710 mSDtfsCounter, 15186 mSDsluCounter, 4145 mSDsCounter, 0 mSdLazyCounter, 376 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15186 SdHoareTripleChecker+Valid, 7855 SdHoareTripleChecker+Invalid, 415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 376 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-22 14:48:22,107 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15186 Valid, 7855 Invalid, 415 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 376 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-22 14:48:22,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4010 states. [2021-11-22 14:48:22,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4010 to 2069. [2021-11-22 14:48:22,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2069 states, 2015 states have (on average 1.311166253101737) internal successors, (2642), 2068 states have internal predecessors, (2642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:48:22,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2069 states to 2069 states and 2642 transitions. [2021-11-22 14:48:22,284 INFO L78 Accepts]: Start accepts. Automaton has 2069 states and 2642 transitions. Word has length 145 [2021-11-22 14:48:22,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:48:22,285 INFO L470 AbstractCegarLoop]: Abstraction has 2069 states and 2642 transitions. [2021-11-22 14:48:22,285 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 6 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:48:22,285 INFO L276 IsEmpty]: Start isEmpty. Operand 2069 states and 2642 transitions. [2021-11-22 14:48:22,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-11-22 14:48:22,288 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:48:22,288 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:48:22,343 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-22 14:48:22,503 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 14:48:22,504 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-11-22 14:48:22,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:48:22,504 INFO L85 PathProgramCache]: Analyzing trace with hash -281813825, now seen corresponding path program 1 times [2021-11-22 14:48:22,505 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:48:22,505 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678302221] [2021-11-22 14:48:22,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:48:22,505 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:48:22,580 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 14:48:22,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1489268434] [2021-11-22 14:48:22,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:48:22,581 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 14:48:22,581 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 14:48:22,582 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 14:48:22,599 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-22 14:48:23,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:48:23,252 INFO L263 TraceCheckSpWp]: Trace formula consists of 2851 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-22 14:48:23,259 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 14:48:23,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:48:23,670 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 14:48:23,670 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:48:23,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678302221] [2021-11-22 14:48:23,671 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 14:48:23,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1489268434] [2021-11-22 14:48:23,671 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1489268434] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:48:23,671 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:48:23,672 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-22 14:48:23,672 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340961698] [2021-11-22 14:48:23,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:48:23,673 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-22 14:48:23,673 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:48:23,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-22 14:48:23,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-22 14:48:23,674 INFO L87 Difference]: Start difference. First operand 2069 states and 2642 transitions. Second operand has 8 states, 8 states have (on average 18.625) internal successors, (149), 7 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:48:26,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:48:26,513 INFO L93 Difference]: Finished difference Result 5917 states and 7547 transitions. [2021-11-22 14:48:26,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-22 14:48:26,514 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 18.625) internal successors, (149), 7 states have internal predecessors, (149), 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 149 [2021-11-22 14:48:26,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:48:26,524 INFO L225 Difference]: With dead ends: 5917 [2021-11-22 14:48:26,524 INFO L226 Difference]: Without dead ends: 4053 [2021-11-22 14:48:26,527 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=105, Invalid=201, Unknown=0, NotChecked=0, Total=306 [2021-11-22 14:48:26,528 INFO L933 BasicCegarLoop]: 3788 mSDtfsCounter, 15071 mSDsluCounter, 7000 mSDsCounter, 0 mSdLazyCounter, 1360 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15071 SdHoareTripleChecker+Valid, 10788 SdHoareTripleChecker+Invalid, 1412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 1360 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-11-22 14:48:26,529 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15071 Valid, 10788 Invalid, 1412 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 1360 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-11-22 14:48:26,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4053 states. [2021-11-22 14:48:26,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4053 to 2069. [2021-11-22 14:48:26,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2069 states, 2015 states have (on average 1.309181141439206) internal successors, (2638), 2068 states have internal predecessors, (2638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:48:26,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2069 states to 2069 states and 2638 transitions. [2021-11-22 14:48:26,699 INFO L78 Accepts]: Start accepts. Automaton has 2069 states and 2638 transitions. Word has length 149 [2021-11-22 14:48:26,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:48:26,700 INFO L470 AbstractCegarLoop]: Abstraction has 2069 states and 2638 transitions. [2021-11-22 14:48:26,700 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.625) internal successors, (149), 7 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:48:26,701 INFO L276 IsEmpty]: Start isEmpty. Operand 2069 states and 2638 transitions. [2021-11-22 14:48:26,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-11-22 14:48:26,703 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:48:26,703 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:48:26,750 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-22 14:48:26,919 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-11-22 14:48:26,920 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-11-22 14:48:26,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:48:26,920 INFO L85 PathProgramCache]: Analyzing trace with hash 1703812133, now seen corresponding path program 1 times [2021-11-22 14:48:26,921 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:48:26,921 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261274378] [2021-11-22 14:48:26,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:48:26,921 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:48:27,005 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 14:48:27,005 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [597869121] [2021-11-22 14:48:27,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:48:27,006 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 14:48:27,006 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 14:48:27,007 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 14:48:27,035 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-22 14:48:27,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:48:27,692 INFO L263 TraceCheckSpWp]: Trace formula consists of 2840 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-22 14:48:27,696 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 14:48:28,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:48:28,024 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 14:48:28,025 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:48:28,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261274378] [2021-11-22 14:48:28,025 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 14:48:28,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [597869121] [2021-11-22 14:48:28,025 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [597869121] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:48:28,025 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:48:28,026 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-22 14:48:28,026 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735978488] [2021-11-22 14:48:28,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:48:28,026 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-22 14:48:28,026 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:48:28,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-22 14:48:28,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-22 14:48:28,028 INFO L87 Difference]: Start difference. First operand 2069 states and 2638 transitions. Second operand has 8 states, 8 states have (on average 18.75) internal successors, (150), 7 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:48:29,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:48:29,738 INFO L93 Difference]: Finished difference Result 3414 states and 4362 transitions. [2021-11-22 14:48:29,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-22 14:48:29,740 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 18.75) internal successors, (150), 7 states have internal predecessors, (150), 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 150 [2021-11-22 14:48:29,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:48:29,749 INFO L225 Difference]: With dead ends: 3414 [2021-11-22 14:48:29,749 INFO L226 Difference]: Without dead ends: 2393 [2021-11-22 14:48:29,753 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2021-11-22 14:48:29,761 INFO L933 BasicCegarLoop]: 2647 mSDtfsCounter, 10042 mSDsluCounter, 6078 mSDsCounter, 0 mSdLazyCounter, 994 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10042 SdHoareTripleChecker+Valid, 8725 SdHoareTripleChecker+Invalid, 1014 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 994 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-11-22 14:48:29,762 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10042 Valid, 8725 Invalid, 1014 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 994 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-11-22 14:48:29,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2393 states. [2021-11-22 14:48:30,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2393 to 2069. [2021-11-22 14:48:30,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2069 states, 2015 states have (on average 1.3066997518610421) internal successors, (2633), 2068 states have internal predecessors, (2633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:48:30,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2069 states to 2069 states and 2633 transitions. [2021-11-22 14:48:30,020 INFO L78 Accepts]: Start accepts. Automaton has 2069 states and 2633 transitions. Word has length 150 [2021-11-22 14:48:30,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:48:30,020 INFO L470 AbstractCegarLoop]: Abstraction has 2069 states and 2633 transitions. [2021-11-22 14:48:30,021 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.75) internal successors, (150), 7 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:48:30,021 INFO L276 IsEmpty]: Start isEmpty. Operand 2069 states and 2633 transitions. [2021-11-22 14:48:30,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-11-22 14:48:30,024 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:48:30,024 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:48:30,069 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-22 14:48:30,247 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-11-22 14:48:30,248 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-11-22 14:48:30,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:48:30,249 INFO L85 PathProgramCache]: Analyzing trace with hash 2017001947, now seen corresponding path program 1 times [2021-11-22 14:48:30,249 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:48:30,249 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712540413] [2021-11-22 14:48:30,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:48:30,249 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:48:30,322 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 14:48:30,323 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [494787429] [2021-11-22 14:48:30,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:48:30,323 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 14:48:30,324 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 14:48:30,325 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 14:48:30,350 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-22 14:48:31,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:48:31,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 2942 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-22 14:48:31,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 14:48:31,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:48:31,425 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 14:48:31,425 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:48:31,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712540413] [2021-11-22 14:48:31,425 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 14:48:31,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [494787429] [2021-11-22 14:48:31,425 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [494787429] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:48:31,425 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:48:31,426 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-22 14:48:31,426 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111980049] [2021-11-22 14:48:31,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:48:31,426 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-22 14:48:31,426 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:48:31,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-22 14:48:31,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-22 14:48:31,427 INFO L87 Difference]: Start difference. First operand 2069 states and 2633 transitions. Second operand has 8 states, 8 states have (on average 19.625) internal successors, (157), 7 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) [2021-11-22 14:48:33,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:48:33,176 INFO L93 Difference]: Finished difference Result 7751 states and 9820 transitions. [2021-11-22 14:48:33,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-22 14:48:33,183 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 19.625) internal successors, (157), 7 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) Word has length 157 [2021-11-22 14:48:33,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:48:33,197 INFO L225 Difference]: With dead ends: 7751 [2021-11-22 14:48:33,197 INFO L226 Difference]: Without dead ends: 5887 [2021-11-22 14:48:33,203 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=116, Invalid=226, Unknown=0, NotChecked=0, Total=342 [2021-11-22 14:48:33,204 INFO L933 BasicCegarLoop]: 3631 mSDtfsCounter, 23721 mSDsluCounter, 6639 mSDsCounter, 0 mSdLazyCounter, 651 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23721 SdHoareTripleChecker+Valid, 10270 SdHoareTripleChecker+Invalid, 751 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 651 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-11-22 14:48:33,204 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23721 Valid, 10270 Invalid, 751 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 651 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-11-22 14:48:33,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5887 states. [2021-11-22 14:48:33,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5887 to 2069. [2021-11-22 14:48:33,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2069 states, 2015 states have (on average 1.3057071960297766) internal successors, (2631), 2068 states have internal predecessors, (2631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:48:33,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2069 states to 2069 states and 2631 transitions. [2021-11-22 14:48:33,402 INFO L78 Accepts]: Start accepts. Automaton has 2069 states and 2631 transitions. Word has length 157 [2021-11-22 14:48:33,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:48:33,403 INFO L470 AbstractCegarLoop]: Abstraction has 2069 states and 2631 transitions. [2021-11-22 14:48:33,403 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.625) internal successors, (157), 7 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) [2021-11-22 14:48:33,404 INFO L276 IsEmpty]: Start isEmpty. Operand 2069 states and 2631 transitions. [2021-11-22 14:48:33,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-11-22 14:48:33,407 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:48:33,407 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:48:33,453 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-22 14:48:33,623 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-11-22 14:48:33,624 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-11-22 14:48:33,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:48:33,624 INFO L85 PathProgramCache]: Analyzing trace with hash -413088787, now seen corresponding path program 1 times [2021-11-22 14:48:33,625 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:48:33,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825309047] [2021-11-22 14:48:33,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:48:33,625 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:48:33,693 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 14:48:33,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [941128819] [2021-11-22 14:48:33,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:48:33,694 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 14:48:33,694 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 14:48:33,695 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 14:48:33,711 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-22 14:48:34,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:48:34,314 INFO L263 TraceCheckSpWp]: Trace formula consists of 3022 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-22 14:48:34,321 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 14:48:34,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:48:34,834 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 14:48:34,834 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:48:34,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825309047] [2021-11-22 14:48:34,834 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 14:48:34,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [941128819] [2021-11-22 14:48:34,835 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [941128819] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:48:34,835 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:48:34,835 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-22 14:48:34,835 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672979057] [2021-11-22 14:48:34,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:48:34,836 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-22 14:48:34,836 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:48:34,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-22 14:48:34,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-22 14:48:34,837 INFO L87 Difference]: Start difference. First operand 2069 states and 2631 transitions. Second operand has 6 states, 6 states have (on average 27.666666666666668) internal successors, (166), 6 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:48:42,585 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-22 14:48:43,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:48:43,307 INFO L93 Difference]: Finished difference Result 5776 states and 7328 transitions. [2021-11-22 14:48:43,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-22 14:48:43,308 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 27.666666666666668) internal successors, (166), 6 states have internal predecessors, (166), 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 166 [2021-11-22 14:48:43,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:48:43,322 INFO L225 Difference]: With dead ends: 5776 [2021-11-22 14:48:43,323 INFO L226 Difference]: Without dead ends: 3776 [2021-11-22 14:48:43,327 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-22 14:48:43,328 INFO L933 BasicCegarLoop]: 3805 mSDtfsCounter, 2043 mSDsluCounter, 12302 mSDsCounter, 0 mSdLazyCounter, 3733 mSolverCounterSat, 91 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2043 SdHoareTripleChecker+Valid, 16107 SdHoareTripleChecker+Invalid, 3825 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 3733 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2021-11-22 14:48:43,329 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2043 Valid, 16107 Invalid, 3825 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 3733 Invalid, 1 Unknown, 0 Unchecked, 8.0s Time] [2021-11-22 14:48:43,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3776 states. [2021-11-22 14:48:43,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3776 to 2117. [2021-11-22 14:48:43,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2117 states, 2063 states have (on average 1.3044110518662142) internal successors, (2691), 2116 states have internal predecessors, (2691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:48:43,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2117 states to 2117 states and 2691 transitions. [2021-11-22 14:48:43,550 INFO L78 Accepts]: Start accepts. Automaton has 2117 states and 2691 transitions. Word has length 166 [2021-11-22 14:48:43,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:48:43,551 INFO L470 AbstractCegarLoop]: Abstraction has 2117 states and 2691 transitions. [2021-11-22 14:48:43,551 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 27.666666666666668) internal successors, (166), 6 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:48:43,552 INFO L276 IsEmpty]: Start isEmpty. Operand 2117 states and 2691 transitions. [2021-11-22 14:48:43,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-11-22 14:48:43,555 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:48:43,555 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:48:43,604 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-11-22 14:48:43,771 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-11-22 14:48:43,772 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-11-22 14:48:43,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:48:43,772 INFO L85 PathProgramCache]: Analyzing trace with hash 1367568745, now seen corresponding path program 1 times [2021-11-22 14:48:43,773 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:48:43,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523451671] [2021-11-22 14:48:43,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:48:43,773 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:48:43,832 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 14:48:43,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1355381484] [2021-11-22 14:48:43,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:48:43,833 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 14:48:43,833 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 14:48:43,834 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 14:48:43,855 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-22 14:48:44,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:48:44,500 INFO L263 TraceCheckSpWp]: Trace formula consists of 3016 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-22 14:48:44,505 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 14:48:44,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:48:44,771 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 14:48:44,771 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:48:44,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523451671] [2021-11-22 14:48:44,772 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 14:48:44,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1355381484] [2021-11-22 14:48:44,772 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1355381484] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:48:44,772 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:48:44,772 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 14:48:44,772 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39665231] [2021-11-22 14:48:44,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:48:44,772 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 14:48:44,773 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:48:44,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 14:48:44,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 14:48:44,773 INFO L87 Difference]: Start difference. First operand 2117 states and 2691 transitions. Second operand has 4 states, 4 states have (on average 41.5) internal successors, (166), 4 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:48:45,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:48:45,059 INFO L93 Difference]: Finished difference Result 4207 states and 5348 transitions. [2021-11-22 14:48:45,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 14:48:45,060 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 41.5) internal successors, (166), 4 states have internal predecessors, (166), 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 166 [2021-11-22 14:48:45,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:48:45,065 INFO L225 Difference]: With dead ends: 4207 [2021-11-22 14:48:45,065 INFO L226 Difference]: Without dead ends: 2165 [2021-11-22 14:48:45,068 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 14:48:45,069 INFO L933 BasicCegarLoop]: 2606 mSDtfsCounter, 32 mSDsluCounter, 5128 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 7734 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 14:48:45,069 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 7734 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 14:48:45,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2165 states. [2021-11-22 14:48:45,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2165 to 2141. [2021-11-22 14:48:45,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2141 states, 2087 states have (on average 1.300910397700048) internal successors, (2715), 2140 states have internal predecessors, (2715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:48:45,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2141 states to 2141 states and 2715 transitions. [2021-11-22 14:48:45,270 INFO L78 Accepts]: Start accepts. Automaton has 2141 states and 2715 transitions. Word has length 166 [2021-11-22 14:48:45,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:48:45,270 INFO L470 AbstractCegarLoop]: Abstraction has 2141 states and 2715 transitions. [2021-11-22 14:48:45,270 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.5) internal successors, (166), 4 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:48:45,271 INFO L276 IsEmpty]: Start isEmpty. Operand 2141 states and 2715 transitions. [2021-11-22 14:48:45,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-11-22 14:48:45,273 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:48:45,274 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:48:45,316 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-11-22 14:48:45,487 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 14:48:45,488 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-11-22 14:48:45,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:48:45,488 INFO L85 PathProgramCache]: Analyzing trace with hash -2088364889, now seen corresponding path program 1 times [2021-11-22 14:48:45,488 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:48:45,489 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972538378] [2021-11-22 14:48:45,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:48:45,489 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:48:45,555 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 14:48:45,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [782425294] [2021-11-22 14:48:45,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:48:45,557 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 14:48:45,557 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 14:48:45,558 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 14:48:45,580 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-11-22 14:48:46,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:48:46,129 INFO L263 TraceCheckSpWp]: Trace formula consists of 3011 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-22 14:48:46,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 14:48:46,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:48:46,364 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 14:48:46,364 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:48:46,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972538378] [2021-11-22 14:48:46,365 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 14:48:46,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [782425294] [2021-11-22 14:48:46,365 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [782425294] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:48:46,365 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:48:46,366 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 14:48:46,366 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702788824] [2021-11-22 14:48:46,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:48:46,367 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 14:48:46,367 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:48:46,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 14:48:46,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 14:48:46,368 INFO L87 Difference]: Start difference. First operand 2141 states and 2715 transitions. Second operand has 5 states, 5 states have (on average 33.2) internal successors, (166), 5 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:48:47,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:48:47,112 INFO L93 Difference]: Finished difference Result 6026 states and 7622 transitions. [2021-11-22 14:48:47,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-22 14:48:47,113 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.2) internal successors, (166), 5 states have internal predecessors, (166), 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 166 [2021-11-22 14:48:47,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:48:47,120 INFO L225 Difference]: With dead ends: 6026 [2021-11-22 14:48:47,120 INFO L226 Difference]: Without dead ends: 3969 [2021-11-22 14:48:47,124 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-22 14:48:47,125 INFO L933 BasicCegarLoop]: 4824 mSDtfsCounter, 2314 mSDsluCounter, 11930 mSDsCounter, 0 mSdLazyCounter, 283 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2314 SdHoareTripleChecker+Valid, 16754 SdHoareTripleChecker+Invalid, 339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-22 14:48:47,125 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2314 Valid, 16754 Invalid, 339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 283 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-22 14:48:47,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3969 states. [2021-11-22 14:48:47,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3969 to 2237. [2021-11-22 14:48:47,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2237 states, 2183 states have (on average 1.298671552908841) internal successors, (2835), 2236 states have internal predecessors, (2835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:48:47,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2237 states to 2237 states and 2835 transitions. [2021-11-22 14:48:47,309 INFO L78 Accepts]: Start accepts. Automaton has 2237 states and 2835 transitions. Word has length 166 [2021-11-22 14:48:47,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:48:47,309 INFO L470 AbstractCegarLoop]: Abstraction has 2237 states and 2835 transitions. [2021-11-22 14:48:47,309 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.2) internal successors, (166), 5 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:48:47,310 INFO L276 IsEmpty]: Start isEmpty. Operand 2237 states and 2835 transitions. [2021-11-22 14:48:47,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-11-22 14:48:47,312 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:48:47,312 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:48:47,359 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-11-22 14:48:47,527 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-11-22 14:48:47,528 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-11-22 14:48:47,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:48:47,528 INFO L85 PathProgramCache]: Analyzing trace with hash 1321900389, now seen corresponding path program 1 times [2021-11-22 14:48:47,529 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:48:47,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634773872] [2021-11-22 14:48:47,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:48:47,529 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:48:47,585 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 14:48:47,585 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [90567050] [2021-11-22 14:48:47,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:48:47,586 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 14:48:47,586 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 14:48:47,587 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 14:48:47,615 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-11-22 14:48:48,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:48:48,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 3008 conjuncts, 39 conjunts are in the unsatisfiable core [2021-11-22 14:48:48,333 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 14:48:48,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:48:48,804 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 14:48:48,804 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:48:48,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634773872] [2021-11-22 14:48:48,805 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 14:48:48,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [90567050] [2021-11-22 14:48:48,805 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [90567050] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:48:48,805 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:48:48,805 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-22 14:48:48,805 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719465982] [2021-11-22 14:48:48,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:48:48,806 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-22 14:48:48,806 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:48:48,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-22 14:48:48,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-11-22 14:48:48,807 INFO L87 Difference]: Start difference. First operand 2237 states and 2835 transitions. Second operand has 10 states, 10 states have (on average 16.6) internal successors, (166), 10 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:48:56,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:48:56,303 INFO L93 Difference]: Finished difference Result 7353 states and 9262 transitions. [2021-11-22 14:48:56,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-22 14:48:56,304 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 16.6) internal successors, (166), 10 states have internal predecessors, (166), 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 166 [2021-11-22 14:48:56,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:48:56,311 INFO L225 Difference]: With dead ends: 7353 [2021-11-22 14:48:56,312 INFO L226 Difference]: Without dead ends: 5193 [2021-11-22 14:48:56,316 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=206, Invalid=550, Unknown=0, NotChecked=0, Total=756 [2021-11-22 14:48:56,317 INFO L933 BasicCegarLoop]: 5615 mSDtfsCounter, 7195 mSDsluCounter, 29419 mSDsCounter, 0 mSdLazyCounter, 5381 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7195 SdHoareTripleChecker+Valid, 35034 SdHoareTripleChecker+Invalid, 5493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 5381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2021-11-22 14:48:56,318 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7195 Valid, 35034 Invalid, 5493 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [112 Valid, 5381 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time] [2021-11-22 14:48:56,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5193 states. [2021-11-22 14:48:56,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5193 to 2210. [2021-11-22 14:48:56,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2210 states, 2156 states have (on average 1.2898886827458256) internal successors, (2781), 2209 states have internal predecessors, (2781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:48:56,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2210 states to 2210 states and 2781 transitions. [2021-11-22 14:48:56,506 INFO L78 Accepts]: Start accepts. Automaton has 2210 states and 2781 transitions. Word has length 166 [2021-11-22 14:48:56,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:48:56,506 INFO L470 AbstractCegarLoop]: Abstraction has 2210 states and 2781 transitions. [2021-11-22 14:48:56,507 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 16.6) internal successors, (166), 10 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:48:56,507 INFO L276 IsEmpty]: Start isEmpty. Operand 2210 states and 2781 transitions. [2021-11-22 14:48:56,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-11-22 14:48:56,508 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:48:56,509 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:48:56,548 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-11-22 14:48:56,731 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-11-22 14:48:56,732 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-11-22 14:48:56,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:48:56,732 INFO L85 PathProgramCache]: Analyzing trace with hash -396885143, now seen corresponding path program 1 times [2021-11-22 14:48:56,732 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:48:56,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653693958] [2021-11-22 14:48:56,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:48:56,733 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:48:56,786 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 14:48:56,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1689776993] [2021-11-22 14:48:56,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:48:56,787 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 14:48:56,787 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 14:48:56,788 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 14:48:56,807 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-11-22 14:48:57,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:48:57,340 INFO L263 TraceCheckSpWp]: Trace formula consists of 2998 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-22 14:48:57,343 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 14:48:57,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:48:57,589 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 14:48:57,589 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:48:57,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653693958] [2021-11-22 14:48:57,589 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 14:48:57,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1689776993] [2021-11-22 14:48:57,589 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1689776993] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:48:57,589 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:48:57,589 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 14:48:57,590 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219274317] [2021-11-22 14:48:57,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:48:57,590 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 14:48:57,591 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:48:57,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 14:48:57,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 14:48:57,591 INFO L87 Difference]: Start difference. First operand 2210 states and 2781 transitions. Second operand has 4 states, 4 states have (on average 41.5) internal successors, (166), 4 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:48:59,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:48:59,185 INFO L93 Difference]: Finished difference Result 4743 states and 6023 transitions. [2021-11-22 14:48:59,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 14:48:59,186 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 41.5) internal successors, (166), 4 states have internal predecessors, (166), 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 166 [2021-11-22 14:48:59,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:48:59,189 INFO L225 Difference]: With dead ends: 4743 [2021-11-22 14:48:59,189 INFO L226 Difference]: Without dead ends: 2580 [2021-11-22 14:48:59,191 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 14:48:59,192 INFO L933 BasicCegarLoop]: 2888 mSDtfsCounter, 569 mSDsluCounter, 4182 mSDsCounter, 0 mSdLazyCounter, 1145 mSolverCounterSat, 305 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 569 SdHoareTripleChecker+Valid, 7070 SdHoareTripleChecker+Invalid, 1450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 305 IncrementalHoareTripleChecker+Valid, 1145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-11-22 14:48:59,192 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [569 Valid, 7070 Invalid, 1450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [305 Valid, 1145 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-11-22 14:48:59,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2580 states. [2021-11-22 14:48:59,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2580 to 2358. [2021-11-22 14:48:59,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2358 states, 2304 states have (on average 1.2699652777777777) internal successors, (2926), 2357 states have internal predecessors, (2926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:48:59,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2358 states to 2358 states and 2926 transitions. [2021-11-22 14:48:59,348 INFO L78 Accepts]: Start accepts. Automaton has 2358 states and 2926 transitions. Word has length 166 [2021-11-22 14:48:59,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:48:59,348 INFO L470 AbstractCegarLoop]: Abstraction has 2358 states and 2926 transitions. [2021-11-22 14:48:59,348 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.5) internal successors, (166), 4 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:48:59,349 INFO L276 IsEmpty]: Start isEmpty. Operand 2358 states and 2926 transitions. [2021-11-22 14:48:59,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2021-11-22 14:48:59,350 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:48:59,350 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:48:59,380 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-11-22 14:48:59,567 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 14:48:59,568 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-11-22 14:48:59,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:48:59,568 INFO L85 PathProgramCache]: Analyzing trace with hash 666320853, now seen corresponding path program 1 times [2021-11-22 14:48:59,568 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:48:59,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928310184] [2021-11-22 14:48:59,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:48:59,569 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:48:59,624 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 14:48:59,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1091173628] [2021-11-22 14:48:59,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:48:59,624 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 14:48:59,625 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 14:48:59,625 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 14:48:59,642 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-11-22 14:49:00,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:49:00,119 INFO L263 TraceCheckSpWp]: Trace formula consists of 3008 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-22 14:49:00,123 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 14:49:00,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:49:00,418 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 14:49:00,418 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:49:00,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928310184] [2021-11-22 14:49:00,418 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 14:49:00,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1091173628] [2021-11-22 14:49:00,419 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1091173628] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:49:00,419 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:49:00,419 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 14:49:00,419 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601527350] [2021-11-22 14:49:00,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:49:00,419 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 14:49:00,419 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:49:00,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 14:49:00,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 14:49:00,420 INFO L87 Difference]: Start difference. First operand 2358 states and 2926 transitions. Second operand has 5 states, 5 states have (on average 34.0) internal successors, (170), 5 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:49:05,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:49:05,846 INFO L93 Difference]: Finished difference Result 6006 states and 7385 transitions. [2021-11-22 14:49:05,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-22 14:49:05,847 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 34.0) internal successors, (170), 5 states have internal predecessors, (170), 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 170 [2021-11-22 14:49:05,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:49:05,851 INFO L225 Difference]: With dead ends: 6006 [2021-11-22 14:49:05,851 INFO L226 Difference]: Without dead ends: 3696 [2021-11-22 14:49:05,853 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-22 14:49:05,854 INFO L933 BasicCegarLoop]: 3521 mSDtfsCounter, 1658 mSDsluCounter, 7328 mSDsCounter, 0 mSdLazyCounter, 3649 mSolverCounterSat, 535 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1658 SdHoareTripleChecker+Valid, 10849 SdHoareTripleChecker+Invalid, 4184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 535 IncrementalHoareTripleChecker+Valid, 3649 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2021-11-22 14:49:05,855 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1658 Valid, 10849 Invalid, 4184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [535 Valid, 3649 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2021-11-22 14:49:05,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3696 states. [2021-11-22 14:49:06,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3696 to 2432. [2021-11-22 14:49:06,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2432 states, 2378 states have (on average 1.2603027754415475) internal successors, (2997), 2431 states have internal predecessors, (2997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:49:06,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2432 states to 2432 states and 2997 transitions. [2021-11-22 14:49:06,040 INFO L78 Accepts]: Start accepts. Automaton has 2432 states and 2997 transitions. Word has length 170 [2021-11-22 14:49:06,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:49:06,041 INFO L470 AbstractCegarLoop]: Abstraction has 2432 states and 2997 transitions. [2021-11-22 14:49:06,041 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 34.0) internal successors, (170), 5 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:49:06,041 INFO L276 IsEmpty]: Start isEmpty. Operand 2432 states and 2997 transitions. [2021-11-22 14:49:06,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2021-11-22 14:49:06,043 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:49:06,043 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:49:06,080 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-11-22 14:49:06,259 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 14:49:06,260 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-11-22 14:49:06,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:49:06,260 INFO L85 PathProgramCache]: Analyzing trace with hash 346787281, now seen corresponding path program 1 times [2021-11-22 14:49:06,260 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:49:06,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65804447] [2021-11-22 14:49:06,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:49:06,261 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:49:06,321 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 14:49:06,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [311132439] [2021-11-22 14:49:06,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:49:06,322 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 14:49:06,322 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 14:49:06,323 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 14:49:06,339 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-11-22 14:49:06,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:49:06,987 INFO L263 TraceCheckSpWp]: Trace formula consists of 3018 conjuncts, 147 conjunts are in the unsatisfiable core [2021-11-22 14:49:06,993 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 14:49:07,024 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-22 14:49:07,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:49:07,312 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2021-11-22 14:49:07,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:49:07,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:49:07,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:49:07,642 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 42 treesize of output 29 [2021-11-22 14:49:07,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:49:07,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:49:07,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:49:07,733 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 38 treesize of output 29 [2021-11-22 14:49:07,912 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-22 14:49:07,913 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-22 14:49:07,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:49:08,011 INFO L354 Elim1Store]: treesize reduction 64, result has 22.9 percent of original size [2021-11-22 14:49:08,012 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 2 case distinctions, treesize of input 40 treesize of output 42 [2021-11-22 14:49:19,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:49:19,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:49:19,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:49:19,011 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 36 treesize of output 38 [2021-11-22 14:49:22,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:49:22,509 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 14:49:22,509 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:49:22,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65804447] [2021-11-22 14:49:22,510 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 14:49:22,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [311132439] [2021-11-22 14:49:22,510 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [311132439] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:49:22,510 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:49:22,510 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-11-22 14:49:22,510 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644488260] [2021-11-22 14:49:22,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:49:22,511 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-22 14:49:22,511 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:49:22,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-22 14:49:22,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=282, Unknown=2, NotChecked=0, Total=342 [2021-11-22 14:49:22,512 INFO L87 Difference]: Start difference. First operand 2432 states and 2997 transitions. Second operand has 19 states, 19 states have (on average 8.947368421052632) internal successors, (170), 19 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:49:33,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:49:33,808 INFO L93 Difference]: Finished difference Result 4849 states and 5976 transitions. [2021-11-22 14:49:33,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-22 14:49:33,809 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 8.947368421052632) internal successors, (170), 19 states have internal predecessors, (170), 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 170 [2021-11-22 14:49:33,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:49:33,812 INFO L225 Difference]: With dead ends: 4849 [2021-11-22 14:49:33,812 INFO L226 Difference]: Without dead ends: 2485 [2021-11-22 14:49:33,815 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 19.1s TimeCoverageRelationStatistics Valid=94, Invalid=455, Unknown=3, NotChecked=0, Total=552 [2021-11-22 14:49:33,816 INFO L933 BasicCegarLoop]: 2600 mSDtfsCounter, 176 mSDsluCounter, 18459 mSDsCounter, 0 mSdLazyCounter, 2462 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 21059 SdHoareTripleChecker+Invalid, 4549 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 2462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2046 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2021-11-22 14:49:33,816 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [176 Valid, 21059 Invalid, 4549 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 2462 Invalid, 0 Unknown, 2046 Unchecked, 5.8s Time] [2021-11-22 14:49:33,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2485 states. [2021-11-22 14:49:34,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2485 to 2479. [2021-11-22 14:49:34,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2479 states, 2425 states have (on average 1.2593814432989692) internal successors, (3054), 2478 states have internal predecessors, (3054), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:49:34,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2479 states to 2479 states and 3054 transitions. [2021-11-22 14:49:34,015 INFO L78 Accepts]: Start accepts. Automaton has 2479 states and 3054 transitions. Word has length 170 [2021-11-22 14:49:34,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:49:34,015 INFO L470 AbstractCegarLoop]: Abstraction has 2479 states and 3054 transitions. [2021-11-22 14:49:34,016 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 8.947368421052632) internal successors, (170), 19 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:49:34,016 INFO L276 IsEmpty]: Start isEmpty. Operand 2479 states and 3054 transitions. [2021-11-22 14:49:34,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2021-11-22 14:49:34,018 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:49:34,018 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:49:34,071 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-11-22 14:49:34,243 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2021-11-22 14:49:34,245 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-11-22 14:49:34,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:49:34,245 INFO L85 PathProgramCache]: Analyzing trace with hash 845344083, now seen corresponding path program 1 times [2021-11-22 14:49:34,245 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:49:34,246 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872205849] [2021-11-22 14:49:34,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:49:34,246 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:49:34,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:49:34,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:49:34,470 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:49:34,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872205849] [2021-11-22 14:49:34,470 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872205849] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:49:34,470 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:49:34,470 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 14:49:34,471 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81877104] [2021-11-22 14:49:34,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:49:34,471 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 14:49:34,471 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:49:34,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 14:49:34,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 14:49:34,472 INFO L87 Difference]: Start difference. First operand 2479 states and 3054 transitions. Second operand has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:49:34,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:49:34,662 INFO L93 Difference]: Finished difference Result 4925 states and 6068 transitions. [2021-11-22 14:49:34,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 14:49:34,663 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 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 170 [2021-11-22 14:49:34,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:49:34,666 INFO L225 Difference]: With dead ends: 4925 [2021-11-22 14:49:34,666 INFO L226 Difference]: Without dead ends: 2477 [2021-11-22 14:49:34,669 INFO L932 BasicCegarLoop]: 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 [2021-11-22 14:49:34,669 INFO L933 BasicCegarLoop]: 2630 mSDtfsCounter, 0 mSDsluCounter, 2620 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 5250 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 14:49:34,670 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 5250 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 14:49:34,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2477 states. [2021-11-22 14:49:34,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2477 to 2476. [2021-11-22 14:49:34,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2476 states, 2422 states have (on average 1.2588769611891) internal successors, (3049), 2475 states have internal predecessors, (3049), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:49:34,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2476 states to 2476 states and 3049 transitions. [2021-11-22 14:49:34,886 INFO L78 Accepts]: Start accepts. Automaton has 2476 states and 3049 transitions. Word has length 170 [2021-11-22 14:49:34,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:49:34,887 INFO L470 AbstractCegarLoop]: Abstraction has 2476 states and 3049 transitions. [2021-11-22 14:49:34,888 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:49:34,889 INFO L276 IsEmpty]: Start isEmpty. Operand 2476 states and 3049 transitions. [2021-11-22 14:49:34,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-11-22 14:49:34,891 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:49:34,891 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:49:34,891 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-22 14:49:34,891 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-11-22 14:49:34,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:49:34,894 INFO L85 PathProgramCache]: Analyzing trace with hash -420327955, now seen corresponding path program 1 times [2021-11-22 14:49:34,894 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:49:34,894 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522556931] [2021-11-22 14:49:34,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:49:34,895 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:49:34,970 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 14:49:34,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [851203600] [2021-11-22 14:49:34,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:49:34,970 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 14:49:34,971 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 14:49:34,976 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 14:49:34,984 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-11-22 14:49:35,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:49:35,729 INFO L263 TraceCheckSpWp]: Trace formula consists of 3040 conjuncts, 95 conjunts are in the unsatisfiable core [2021-11-22 14:49:35,737 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 14:49:35,745 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-22 14:49:36,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:49:36,064 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2021-11-22 14:49:36,306 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-22 14:49:36,307 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 20 [2021-11-22 14:49:36,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:49:36,331 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2021-11-22 14:49:36,467 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-22 14:49:36,468 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-22 14:49:36,540 INFO L354 Elim1Store]: treesize reduction 33, result has 21.4 percent of original size [2021-11-22 14:49:36,540 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 28 [2021-11-22 14:49:47,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:49:47,099 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2021-11-22 14:49:50,017 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 29 [2021-11-22 14:49:50,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:49:50,185 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 14:49:50,185 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:49:50,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522556931] [2021-11-22 14:49:50,185 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 14:49:50,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [851203600] [2021-11-22 14:49:50,185 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [851203600] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:49:50,186 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:49:50,186 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-11-22 14:49:50,186 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645161585] [2021-11-22 14:49:50,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:49:50,186 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-22 14:49:50,186 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:49:50,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-22 14:49:50,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=216, Unknown=5, NotChecked=0, Total=272 [2021-11-22 14:49:50,188 INFO L87 Difference]: Start difference. First operand 2476 states and 3049 transitions. Second operand has 17 states, 17 states have (on average 10.058823529411764) internal successors, (171), 17 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:49:59,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:49:59,456 INFO L93 Difference]: Finished difference Result 4895 states and 6030 transitions. [2021-11-22 14:49:59,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-22 14:49:59,458 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 10.058823529411764) internal successors, (171), 17 states have internal predecessors, (171), 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 171 [2021-11-22 14:49:59,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:49:59,460 INFO L225 Difference]: With dead ends: 4895 [2021-11-22 14:49:59,460 INFO L226 Difference]: Without dead ends: 2431 [2021-11-22 14:49:59,464 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 154 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 13.6s TimeCoverageRelationStatistics Valid=129, Invalid=622, Unknown=5, NotChecked=0, Total=756 [2021-11-22 14:49:59,464 INFO L933 BasicCegarLoop]: 2597 mSDtfsCounter, 266 mSDsluCounter, 19842 mSDsCounter, 0 mSdLazyCounter, 4194 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 266 SdHoareTripleChecker+Valid, 22439 SdHoareTripleChecker+Invalid, 4231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 4194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.6s IncrementalHoareTripleChecker+Time [2021-11-22 14:49:59,465 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [266 Valid, 22439 Invalid, 4231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 4194 Invalid, 0 Unknown, 0 Unchecked, 8.6s Time] [2021-11-22 14:49:59,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2431 states. [2021-11-22 14:49:59,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2431 to 2430. [2021-11-22 14:49:59,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2430 states, 2376 states have (on average 1.2601010101010102) internal successors, (2994), 2429 states have internal predecessors, (2994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:49:59,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2430 states to 2430 states and 2994 transitions. [2021-11-22 14:49:59,652 INFO L78 Accepts]: Start accepts. Automaton has 2430 states and 2994 transitions. Word has length 171 [2021-11-22 14:49:59,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:49:59,652 INFO L470 AbstractCegarLoop]: Abstraction has 2430 states and 2994 transitions. [2021-11-22 14:49:59,653 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 10.058823529411764) internal successors, (171), 17 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:49:59,653 INFO L276 IsEmpty]: Start isEmpty. Operand 2430 states and 2994 transitions. [2021-11-22 14:49:59,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2021-11-22 14:49:59,655 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:49:59,655 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:49:59,700 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-11-22 14:49:59,871 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-11-22 14:49:59,872 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-11-22 14:49:59,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:49:59,872 INFO L85 PathProgramCache]: Analyzing trace with hash 1786064061, now seen corresponding path program 1 times [2021-11-22 14:49:59,872 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:49:59,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775703372] [2021-11-22 14:49:59,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:49:59,873 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:49:59,929 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 14:49:59,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1609955548] [2021-11-22 14:49:59,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:49:59,930 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 14:49:59,930 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 14:49:59,931 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 14:49:59,940 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-11-22 14:50:00,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:50:00,740 INFO L263 TraceCheckSpWp]: Trace formula consists of 3035 conjuncts, 65 conjunts are in the unsatisfiable core [2021-11-22 14:50:00,746 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 14:50:00,754 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-22 14:50:00,914 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-22 14:50:00,914 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-11-22 14:50:00,973 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 23 [2021-11-22 14:50:01,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:50:01,142 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 32 [2021-11-22 14:50:01,443 INFO L354 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2021-11-22 14:50:01,443 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 35 [2021-11-22 14:50:01,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:50:01,483 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 30 [2021-11-22 14:50:01,601 INFO L354 Elim1Store]: treesize reduction 8, result has 61.9 percent of original size [2021-11-22 14:50:01,602 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 22 [2021-11-22 14:50:01,682 INFO L354 Elim1Store]: treesize reduction 56, result has 21.1 percent of original size [2021-11-22 14:50:01,682 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 3 case distinctions, treesize of input 51 treesize of output 34 [2021-11-22 14:50:01,750 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-22 14:50:01,750 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 12 [2021-11-22 14:50:01,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:50:01,999 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 14:50:01,999 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:50:01,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775703372] [2021-11-22 14:50:01,999 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 14:50:02,000 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1609955548] [2021-11-22 14:50:02,000 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1609955548] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:50:02,000 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:50:02,000 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-22 14:50:02,000 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780661368] [2021-11-22 14:50:02,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:50:02,001 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-22 14:50:02,001 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:50:02,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-22 14:50:02,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2021-11-22 14:50:02,002 INFO L87 Difference]: Start difference. First operand 2430 states and 2994 transitions. Second operand has 15 states, 15 states have (on average 11.533333333333333) internal successors, (173), 15 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:50:11,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:50:11,675 INFO L93 Difference]: Finished difference Result 4969 states and 6091 transitions. [2021-11-22 14:50:11,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-22 14:50:11,676 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 11.533333333333333) internal successors, (173), 15 states have internal predecessors, (173), 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 173 [2021-11-22 14:50:11,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:50:11,678 INFO L225 Difference]: With dead ends: 4969 [2021-11-22 14:50:11,678 INFO L226 Difference]: Without dead ends: 2587 [2021-11-22 14:50:11,681 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=152, Invalid=498, Unknown=0, NotChecked=0, Total=650 [2021-11-22 14:50:11,681 INFO L933 BasicCegarLoop]: 2792 mSDtfsCounter, 589 mSDsluCounter, 21955 mSDsCounter, 0 mSdLazyCounter, 7020 mSolverCounterSat, 249 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 589 SdHoareTripleChecker+Valid, 24747 SdHoareTripleChecker+Invalid, 7269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 249 IncrementalHoareTripleChecker+Valid, 7020 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.6s IncrementalHoareTripleChecker+Time [2021-11-22 14:50:11,682 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [589 Valid, 24747 Invalid, 7269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [249 Valid, 7020 Invalid, 0 Unknown, 0 Unchecked, 8.6s Time] [2021-11-22 14:50:11,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2587 states. [2021-11-22 14:50:11,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2587 to 2430. [2021-11-22 14:50:11,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2430 states, 2376 states have (on average 1.2596801346801347) internal successors, (2993), 2429 states have internal predecessors, (2993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:50:11,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2430 states to 2430 states and 2993 transitions. [2021-11-22 14:50:11,813 INFO L78 Accepts]: Start accepts. Automaton has 2430 states and 2993 transitions. Word has length 173 [2021-11-22 14:50:11,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:50:11,813 INFO L470 AbstractCegarLoop]: Abstraction has 2430 states and 2993 transitions. [2021-11-22 14:50:11,814 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 11.533333333333333) internal successors, (173), 15 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:50:11,814 INFO L276 IsEmpty]: Start isEmpty. Operand 2430 states and 2993 transitions. [2021-11-22 14:50:11,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-11-22 14:50:11,815 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:50:11,815 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:50:11,842 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-11-22 14:50:12,015 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 14:50:12,016 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-11-22 14:50:12,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:50:12,016 INFO L85 PathProgramCache]: Analyzing trace with hash -1725967529, now seen corresponding path program 1 times [2021-11-22 14:50:12,017 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:50:12,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925817484] [2021-11-22 14:50:12,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:50:12,017 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:50:12,091 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 14:50:12,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1093899272] [2021-11-22 14:50:12,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:50:12,092 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 14:50:12,092 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 14:50:12,093 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 14:50:12,117 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-11-22 14:50:12,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:50:12,760 INFO L263 TraceCheckSpWp]: Trace formula consists of 3040 conjuncts, 72 conjunts are in the unsatisfiable core [2021-11-22 14:50:12,764 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 14:50:13,513 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 24 [2021-11-22 14:50:13,516 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-11-22 14:50:13,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:50:13,669 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 14:50:13,669 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:50:13,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925817484] [2021-11-22 14:50:13,670 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 14:50:13,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1093899272] [2021-11-22 14:50:13,670 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1093899272] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:50:13,670 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:50:13,670 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-22 14:50:13,670 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852489184] [2021-11-22 14:50:13,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:50:13,671 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-22 14:50:13,671 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:50:13,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-22 14:50:13,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-11-22 14:50:13,672 INFO L87 Difference]: Start difference. First operand 2430 states and 2993 transitions. Second operand has 11 states, 11 states have (on average 15.909090909090908) internal successors, (175), 11 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:50:18,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:50:18,981 INFO L93 Difference]: Finished difference Result 7121 states and 8773 transitions. [2021-11-22 14:50:18,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-22 14:50:18,982 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 15.909090909090908) internal successors, (175), 11 states have internal predecessors, (175), 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 175 [2021-11-22 14:50:18,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:50:18,986 INFO L225 Difference]: With dead ends: 7121 [2021-11-22 14:50:18,986 INFO L226 Difference]: Without dead ends: 4805 [2021-11-22 14:50:18,989 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=183, Invalid=467, Unknown=0, NotChecked=0, Total=650 [2021-11-22 14:50:18,990 INFO L933 BasicCegarLoop]: 4576 mSDtfsCounter, 7968 mSDsluCounter, 23711 mSDsCounter, 0 mSdLazyCounter, 3470 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7968 SdHoareTripleChecker+Valid, 28287 SdHoareTripleChecker+Invalid, 3525 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 3470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2021-11-22 14:50:18,990 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7968 Valid, 28287 Invalid, 3525 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [55 Valid, 3470 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2021-11-22 14:50:18,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4805 states. [2021-11-22 14:50:19,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4805 to 2438. [2021-11-22 14:50:19,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2438 states, 2384 states have (on average 1.2588087248322148) internal successors, (3001), 2437 states have internal predecessors, (3001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:50:19,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2438 states to 2438 states and 3001 transitions. [2021-11-22 14:50:19,151 INFO L78 Accepts]: Start accepts. Automaton has 2438 states and 3001 transitions. Word has length 175 [2021-11-22 14:50:19,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:50:19,152 INFO L470 AbstractCegarLoop]: Abstraction has 2438 states and 3001 transitions. [2021-11-22 14:50:19,152 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 15.909090909090908) internal successors, (175), 11 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:50:19,152 INFO L276 IsEmpty]: Start isEmpty. Operand 2438 states and 3001 transitions. [2021-11-22 14:50:19,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2021-11-22 14:50:19,153 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:50:19,154 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:50:19,185 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2021-11-22 14:50:19,354 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-11-22 14:50:19,355 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-11-22 14:50:19,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:50:19,355 INFO L85 PathProgramCache]: Analyzing trace with hash -251217625, now seen corresponding path program 1 times [2021-11-22 14:50:19,356 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:50:19,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863772032] [2021-11-22 14:50:19,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:50:19,356 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:50:19,417 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 14:50:19,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1244715627] [2021-11-22 14:50:19,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:50:19,418 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 14:50:19,418 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 14:50:19,419 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 14:50:19,424 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-11-22 14:50:20,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:50:20,163 INFO L263 TraceCheckSpWp]: Trace formula consists of 3062 conjuncts, 133 conjunts are in the unsatisfiable core [2021-11-22 14:50:20,167 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 14:50:20,182 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-22 14:50:20,367 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-22 14:50:20,368 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2021-11-22 14:50:20,437 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 19 [2021-11-22 14:50:20,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:50:20,581 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 28 [2021-11-22 14:50:20,858 INFO L354 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2021-11-22 14:50:20,858 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 31 [2021-11-22 14:50:20,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:50:20,888 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 26 [2021-11-22 14:50:21,082 INFO L354 Elim1Store]: treesize reduction 22, result has 40.5 percent of original size [2021-11-22 14:50:21,082 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 22 treesize of output 24 [2021-11-22 14:50:21,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:50:21,190 INFO L354 Elim1Store]: treesize reduction 62, result has 21.5 percent of original size [2021-11-22 14:50:21,191 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 2 case distinctions, treesize of input 47 treesize of output 32 [2021-11-22 14:50:21,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:50:21,419 INFO L354 Elim1Store]: treesize reduction 17, result has 39.3 percent of original size [2021-11-22 14:50:21,419 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 2 case distinctions, treesize of input 33 treesize of output 28 [2021-11-22 14:50:21,751 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2021-11-22 14:50:21,791 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-22 14:50:21,793 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-22 14:50:21,793 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 29 [2021-11-22 14:50:21,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:50:21,985 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 14:50:21,985 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:50:21,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863772032] [2021-11-22 14:50:21,985 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 14:50:21,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1244715627] [2021-11-22 14:50:21,985 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1244715627] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:50:21,985 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:50:21,985 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2021-11-22 14:50:21,986 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142766871] [2021-11-22 14:50:21,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:50:21,986 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-22 14:50:21,987 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:50:21,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-22 14:50:21,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2021-11-22 14:50:21,988 INFO L87 Difference]: Start difference. First operand 2438 states and 3001 transitions. Second operand has 21 states, 21 states have (on average 8.380952380952381) internal successors, (176), 21 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:50:41,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:50:41,735 INFO L93 Difference]: Finished difference Result 9053 states and 11150 transitions. [2021-11-22 14:50:41,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-11-22 14:50:41,736 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.380952380952381) internal successors, (176), 21 states have internal predecessors, (176), 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 176 [2021-11-22 14:50:41,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:50:41,744 INFO L225 Difference]: With dead ends: 9053 [2021-11-22 14:50:41,744 INFO L226 Difference]: Without dead ends: 6754 [2021-11-22 14:50:41,748 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 464 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=295, Invalid=1427, Unknown=0, NotChecked=0, Total=1722 [2021-11-22 14:50:41,748 INFO L933 BasicCegarLoop]: 6607 mSDtfsCounter, 4687 mSDsluCounter, 55551 mSDsCounter, 0 mSdLazyCounter, 14201 mSolverCounterSat, 192 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4687 SdHoareTripleChecker+Valid, 62158 SdHoareTripleChecker+Invalid, 14393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 192 IncrementalHoareTripleChecker+Valid, 14201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.0s IncrementalHoareTripleChecker+Time [2021-11-22 14:50:41,749 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4687 Valid, 62158 Invalid, 14393 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [192 Valid, 14201 Invalid, 0 Unknown, 0 Unchecked, 18.0s Time] [2021-11-22 14:50:41,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6754 states. [2021-11-22 14:50:41,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6754 to 2452. [2021-11-22 14:50:41,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2452 states, 2398 states have (on average 1.2585487906588824) internal successors, (3018), 2451 states have internal predecessors, (3018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:50:41,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2452 states to 2452 states and 3018 transitions. [2021-11-22 14:50:41,933 INFO L78 Accepts]: Start accepts. Automaton has 2452 states and 3018 transitions. Word has length 176 [2021-11-22 14:50:41,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:50:41,934 INFO L470 AbstractCegarLoop]: Abstraction has 2452 states and 3018 transitions. [2021-11-22 14:50:41,934 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.380952380952381) internal successors, (176), 21 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:50:41,934 INFO L276 IsEmpty]: Start isEmpty. Operand 2452 states and 3018 transitions. [2021-11-22 14:50:41,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-11-22 14:50:41,935 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:50:41,936 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:50:41,967 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2021-11-22 14:50:42,136 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 14:50:42,136 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-11-22 14:50:42,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:50:42,137 INFO L85 PathProgramCache]: Analyzing trace with hash 408261473, now seen corresponding path program 1 times [2021-11-22 14:50:42,137 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:50:42,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865769944] [2021-11-22 14:50:42,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:50:42,137 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:50:42,203 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 14:50:42,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1434806036] [2021-11-22 14:50:42,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:50:42,204 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 14:50:42,204 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 14:50:42,205 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 14:50:42,224 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-11-22 14:50:42,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:50:43,010 INFO L263 TraceCheckSpWp]: Trace formula consists of 3067 conjuncts, 101 conjunts are in the unsatisfiable core [2021-11-22 14:50:43,015 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 14:50:43,705 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-22 14:50:44,025 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-22 14:50:46,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:50:46,818 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 14:50:46,818 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:50:46,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865769944] [2021-11-22 14:50:46,818 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 14:50:46,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1434806036] [2021-11-22 14:50:46,819 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1434806036] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:50:46,819 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:50:46,819 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-22 14:50:46,819 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798214699] [2021-11-22 14:50:46,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:50:46,820 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-22 14:50:46,820 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:50:46,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-22 14:50:46,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=173, Unknown=1, NotChecked=0, Total=210 [2021-11-22 14:50:46,821 INFO L87 Difference]: Start difference. First operand 2452 states and 3018 transitions. Second operand has 15 states, 15 states have (on average 11.866666666666667) internal successors, (178), 15 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:51:12,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:51:12,725 INFO L93 Difference]: Finished difference Result 6967 states and 8578 transitions. [2021-11-22 14:51:12,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-22 14:51:12,726 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 11.866666666666667) internal successors, (178), 15 states have internal predecessors, (178), 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 178 [2021-11-22 14:51:12,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:51:12,731 INFO L225 Difference]: With dead ends: 6967 [2021-11-22 14:51:12,731 INFO L226 Difference]: Without dead ends: 4686 [2021-11-22 14:51:12,734 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 163 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=241, Invalid=750, Unknown=1, NotChecked=0, Total=992 [2021-11-22 14:51:12,735 INFO L933 BasicCegarLoop]: 4379 mSDtfsCounter, 6371 mSDsluCounter, 35448 mSDsCounter, 0 mSdLazyCounter, 11060 mSolverCounterSat, 165 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6371 SdHoareTripleChecker+Valid, 39827 SdHoareTripleChecker+Invalid, 11225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 165 IncrementalHoareTripleChecker+Valid, 11060 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.3s IncrementalHoareTripleChecker+Time [2021-11-22 14:51:12,735 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6371 Valid, 39827 Invalid, 11225 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [165 Valid, 11060 Invalid, 0 Unknown, 0 Unchecked, 24.3s Time] [2021-11-22 14:51:12,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4686 states. [2021-11-22 14:51:13,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4686 to 4391. [2021-11-22 14:51:13,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4391 states, 4337 states have (on average 1.2614710629467374) internal successors, (5471), 4390 states have internal predecessors, (5471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:51:13,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4391 states to 4391 states and 5471 transitions. [2021-11-22 14:51:13,041 INFO L78 Accepts]: Start accepts. Automaton has 4391 states and 5471 transitions. Word has length 178 [2021-11-22 14:51:13,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:51:13,041 INFO L470 AbstractCegarLoop]: Abstraction has 4391 states and 5471 transitions. [2021-11-22 14:51:13,041 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 11.866666666666667) internal successors, (178), 15 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:51:13,041 INFO L276 IsEmpty]: Start isEmpty. Operand 4391 states and 5471 transitions. [2021-11-22 14:51:13,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-11-22 14:51:13,043 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:51:13,044 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:51:13,075 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2021-11-22 14:51:13,244 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-11-22 14:51:13,244 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-11-22 14:51:13,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:51:13,245 INFO L85 PathProgramCache]: Analyzing trace with hash -136611101, now seen corresponding path program 1 times [2021-11-22 14:51:13,245 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:51:13,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737904574] [2021-11-22 14:51:13,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:51:13,245 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:51:13,302 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 14:51:13,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1725411632] [2021-11-22 14:51:13,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:51:13,303 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 14:51:13,303 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 14:51:13,304 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 14:51:13,319 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2021-11-22 14:51:14,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:51:14,105 INFO L263 TraceCheckSpWp]: Trace formula consists of 3064 conjuncts, 107 conjunts are in the unsatisfiable core [2021-11-22 14:51:14,109 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 14:51:14,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:51:14,544 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 40 [2021-11-22 14:51:14,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:51:14,549 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 25 [2021-11-22 14:51:14,889 INFO L354 Elim1Store]: treesize reduction 21, result has 41.7 percent of original size [2021-11-22 14:51:14,889 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 44 [2021-11-22 14:51:14,911 INFO L354 Elim1Store]: treesize reduction 21, result has 41.7 percent of original size [2021-11-22 14:51:14,911 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 40 [2021-11-22 14:51:14,980 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2021-11-22 14:51:14,983 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2021-11-22 14:51:14,993 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 4 [2021-11-22 14:51:14,997 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-22 14:51:15,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:51:15,363 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 14:51:15,363 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:51:15,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737904574] [2021-11-22 14:51:15,363 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 14:51:15,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1725411632] [2021-11-22 14:51:15,363 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1725411632] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:51:15,363 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:51:15,363 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-11-22 14:51:15,363 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101738080] [2021-11-22 14:51:15,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:51:15,364 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-22 14:51:15,364 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:51:15,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-22 14:51:15,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2021-11-22 14:51:15,365 INFO L87 Difference]: Start difference. First operand 4391 states and 5471 transitions. Second operand has 19 states, 19 states have (on average 9.368421052631579) internal successors, (178), 19 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:51:38,174 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-22 14:52:10,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:52:10,037 INFO L93 Difference]: Finished difference Result 32610 states and 40398 transitions. [2021-11-22 14:52:10,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2021-11-22 14:52:10,038 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 9.368421052631579) internal successors, (178), 19 states have internal predecessors, (178), 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 178 [2021-11-22 14:52:10,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:52:10,073 INFO L225 Difference]: With dead ends: 32610 [2021-11-22 14:52:10,073 INFO L226 Difference]: Without dead ends: 28545 [2021-11-22 14:52:10,087 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7407 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=2809, Invalid=16651, Unknown=0, NotChecked=0, Total=19460 [2021-11-22 14:52:10,088 INFO L933 BasicCegarLoop]: 5564 mSDtfsCounter, 28421 mSDsluCounter, 62373 mSDsCounter, 0 mSdLazyCounter, 23278 mSolverCounterSat, 1578 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28421 SdHoareTripleChecker+Valid, 67937 SdHoareTripleChecker+Invalid, 24856 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1578 IncrementalHoareTripleChecker+Valid, 23278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 43.8s IncrementalHoareTripleChecker+Time [2021-11-22 14:52:10,088 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28421 Valid, 67937 Invalid, 24856 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1578 Valid, 23278 Invalid, 0 Unknown, 0 Unchecked, 43.8s Time] [2021-11-22 14:52:10,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28545 states. [2021-11-22 14:52:10,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28545 to 8172. [2021-11-22 14:52:10,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8172 states, 8118 states have (on average 1.2633653609263364) internal successors, (10256), 8171 states have internal predecessors, (10256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:52:10,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8172 states to 8172 states and 10256 transitions. [2021-11-22 14:52:10,939 INFO L78 Accepts]: Start accepts. Automaton has 8172 states and 10256 transitions. Word has length 178 [2021-11-22 14:52:10,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:52:10,940 INFO L470 AbstractCegarLoop]: Abstraction has 8172 states and 10256 transitions. [2021-11-22 14:52:10,940 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 9.368421052631579) internal successors, (178), 19 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:52:10,941 INFO L276 IsEmpty]: Start isEmpty. Operand 8172 states and 10256 transitions. [2021-11-22 14:52:10,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2021-11-22 14:52:10,945 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:52:10,946 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:52:10,988 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2021-11-22 14:52:11,171 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-11-22 14:52:11,172 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-11-22 14:52:11,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:52:11,172 INFO L85 PathProgramCache]: Analyzing trace with hash -1352043415, now seen corresponding path program 1 times [2021-11-22 14:52:11,172 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:52:11,173 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387862235] [2021-11-22 14:52:11,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:52:11,173 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:52:11,242 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 14:52:11,242 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [942467364] [2021-11-22 14:52:11,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:52:11,243 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 14:52:11,243 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 14:52:11,244 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 14:52:11,256 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2021-11-22 14:52:12,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:52:12,309 INFO L263 TraceCheckSpWp]: Trace formula consists of 3069 conjuncts, 80 conjunts are in the unsatisfiable core [2021-11-22 14:52:12,314 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 14:52:12,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:12,648 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2021-11-22 14:52:13,218 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-22 14:52:13,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:52:13,615 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 14:52:13,615 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:52:13,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387862235] [2021-11-22 14:52:13,615 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 14:52:13,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [942467364] [2021-11-22 14:52:13,615 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [942467364] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:52:13,615 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:52:13,616 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-22 14:52:13,616 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436809271] [2021-11-22 14:52:13,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:52:13,617 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-22 14:52:13,617 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:52:13,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-22 14:52:13,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2021-11-22 14:52:13,618 INFO L87 Difference]: Start difference. First operand 8172 states and 10256 transitions. Second operand has 12 states, 12 states have (on average 15.0) internal successors, (180), 12 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:52:41,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:52:41,803 INFO L93 Difference]: Finished difference Result 25103 states and 31256 transitions. [2021-11-22 14:52:41,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-22 14:52:41,805 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 15.0) internal successors, (180), 12 states have internal predecessors, (180), 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 180 [2021-11-22 14:52:41,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:52:41,820 INFO L225 Difference]: With dead ends: 25103 [2021-11-22 14:52:41,820 INFO L226 Difference]: Without dead ends: 16978 [2021-11-22 14:52:41,827 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 167 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=160, Invalid=440, Unknown=0, NotChecked=0, Total=600 [2021-11-22 14:52:41,828 INFO L933 BasicCegarLoop]: 4211 mSDtfsCounter, 5714 mSDsluCounter, 27977 mSDsCounter, 0 mSdLazyCounter, 12097 mSolverCounterSat, 297 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5714 SdHoareTripleChecker+Valid, 32188 SdHoareTripleChecker+Invalid, 12394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 297 IncrementalHoareTripleChecker+Valid, 12097 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.1s IncrementalHoareTripleChecker+Time [2021-11-22 14:52:41,828 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5714 Valid, 32188 Invalid, 12394 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [297 Valid, 12097 Invalid, 0 Unknown, 0 Unchecked, 26.1s Time] [2021-11-22 14:52:41,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16978 states. [2021-11-22 14:52:43,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16978 to 15691. [2021-11-22 14:52:43,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15691 states, 15637 states have (on average 1.2644369124512373) internal successors, (19772), 15690 states have internal predecessors, (19772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:52:43,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15691 states to 15691 states and 19772 transitions. [2021-11-22 14:52:43,062 INFO L78 Accepts]: Start accepts. Automaton has 15691 states and 19772 transitions. Word has length 180 [2021-11-22 14:52:43,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:52:43,062 INFO L470 AbstractCegarLoop]: Abstraction has 15691 states and 19772 transitions. [2021-11-22 14:52:43,063 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 15.0) internal successors, (180), 12 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:52:43,063 INFO L276 IsEmpty]: Start isEmpty. Operand 15691 states and 19772 transitions. [2021-11-22 14:52:43,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2021-11-22 14:52:43,069 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:52:43,069 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:52:43,115 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2021-11-22 14:52:43,295 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-11-22 14:52:43,296 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-11-22 14:52:43,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:52:43,296 INFO L85 PathProgramCache]: Analyzing trace with hash -170110039, now seen corresponding path program 1 times [2021-11-22 14:52:43,296 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:52:43,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851885933] [2021-11-22 14:52:43,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:52:43,297 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:52:43,344 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 14:52:43,344 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1653009193] [2021-11-22 14:52:43,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:52:43,345 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 14:52:43,345 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 14:52:43,346 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 14:52:43,366 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2021-11-22 14:52:43,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:52:43,932 INFO L263 TraceCheckSpWp]: Trace formula consists of 3069 conjuncts, 73 conjunts are in the unsatisfiable core [2021-11-22 14:52:43,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 14:52:43,949 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-22 14:52:44,303 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-22 14:52:44,303 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-22 14:52:44,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:44,396 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2021-11-22 14:52:44,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:44,558 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2021-11-22 14:52:44,991 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-22 14:52:44,991 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 20 [2021-11-22 14:52:45,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:45,033 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2021-11-22 14:52:45,234 INFO L354 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2021-11-22 14:52:45,234 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 20 treesize of output 22 [2021-11-22 14:52:45,309 INFO L354 Elim1Store]: treesize reduction 27, result has 20.6 percent of original size [2021-11-22 14:52:45,310 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2021-11-22 14:52:50,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:52:50,112 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 14:52:50,112 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:52:50,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851885933] [2021-11-22 14:52:50,112 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 14:52:50,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1653009193] [2021-11-22 14:52:50,112 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1653009193] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:52:50,113 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:52:50,113 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-22 14:52:50,113 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682482524] [2021-11-22 14:52:50,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:52:50,114 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-22 14:52:50,114 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:52:50,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-22 14:52:50,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=143, Unknown=1, NotChecked=0, Total=182 [2021-11-22 14:52:50,115 INFO L87 Difference]: Start difference. First operand 15691 states and 19772 transitions. Second operand has 14 states, 14 states have (on average 12.857142857142858) internal successors, (180), 14 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:52:55,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:52:55,037 INFO L93 Difference]: Finished difference Result 31252 states and 39390 transitions. [2021-11-22 14:52:55,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-22 14:52:55,039 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 12.857142857142858) internal successors, (180), 14 states have internal predecessors, (180), 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 180 [2021-11-22 14:52:55,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:52:55,053 INFO L225 Difference]: With dead ends: 31252 [2021-11-22 14:52:55,053 INFO L226 Difference]: Without dead ends: 15717 [2021-11-22 14:52:55,063 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=43, Invalid=166, Unknown=1, NotChecked=0, Total=210 [2021-11-22 14:52:55,063 INFO L933 BasicCegarLoop]: 2606 mSDtfsCounter, 35 mSDsluCounter, 12302 mSDsCounter, 0 mSdLazyCounter, 1214 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 14908 SdHoareTripleChecker+Invalid, 3444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2225 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2021-11-22 14:52:55,063 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 14908 Invalid, 3444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 1214 Invalid, 0 Unknown, 2225 Unchecked, 3.6s Time] [2021-11-22 14:52:55,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15717 states. [2021-11-22 14:52:56,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15717 to 15716. [2021-11-22 14:52:56,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15716 states, 15662 states have (on average 1.2642702081471076) internal successors, (19801), 15715 states have internal predecessors, (19801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:52:56,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15716 states to 15716 states and 19801 transitions. [2021-11-22 14:52:56,194 INFO L78 Accepts]: Start accepts. Automaton has 15716 states and 19801 transitions. Word has length 180 [2021-11-22 14:52:56,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:52:56,194 INFO L470 AbstractCegarLoop]: Abstraction has 15716 states and 19801 transitions. [2021-11-22 14:52:56,194 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 12.857142857142858) internal successors, (180), 14 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:52:56,194 INFO L276 IsEmpty]: Start isEmpty. Operand 15716 states and 19801 transitions. [2021-11-22 14:52:56,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2021-11-22 14:52:56,199 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:52:56,199 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:52:56,232 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2021-11-22 14:52:56,415 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 14:52:56,416 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-11-22 14:52:56,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:52:56,416 INFO L85 PathProgramCache]: Analyzing trace with hash 357284011, now seen corresponding path program 1 times [2021-11-22 14:52:56,416 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:52:56,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018599225] [2021-11-22 14:52:56,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:52:56,417 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:52:56,459 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 14:52:56,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [845489217] [2021-11-22 14:52:56,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:52:56,460 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 14:52:56,460 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 14:52:56,461 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 14:52:56,472 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2021-11-22 14:52:57,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:52:57,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 3066 conjuncts, 140 conjunts are in the unsatisfiable core [2021-11-22 14:52:57,159 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 14:52:58,192 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 66 [2021-11-22 14:52:58,198 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 51 [2021-11-22 14:52:58,203 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 36 [2021-11-22 14:52:59,280 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 66 [2021-11-22 14:52:59,296 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 51 [2021-11-22 14:52:59,301 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 36 [2021-11-22 14:52:59,608 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-22 14:52:59,609 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 23 [2021-11-22 14:52:59,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:52:59,787 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 14:52:59,787 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:52:59,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018599225] [2021-11-22 14:52:59,787 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 14:52:59,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [845489217] [2021-11-22 14:52:59,787 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [845489217] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:52:59,787 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:52:59,787 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-11-22 14:52:59,788 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386677880] [2021-11-22 14:52:59,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:52:59,788 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-22 14:52:59,788 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:52:59,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-22 14:52:59,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=288, Unknown=0, NotChecked=0, Total=342 [2021-11-22 14:52:59,789 INFO L87 Difference]: Start difference. First operand 15716 states and 19801 transitions. Second operand has 19 states, 19 states have (on average 9.473684210526315) internal successors, (180), 19 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:53:48,603 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-22 14:54:16,110 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-22 14:54:18,203 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-22 14:54:22,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:54:22,929 INFO L93 Difference]: Finished difference Result 75085 states and 94591 transitions. [2021-11-22 14:54:22,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-11-22 14:54:22,931 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 9.473684210526315) internal successors, (180), 19 states have internal predecessors, (180), 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 180 [2021-11-22 14:54:22,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:54:23,025 INFO L225 Difference]: With dead ends: 75085 [2021-11-22 14:54:23,025 INFO L226 Difference]: Without dead ends: 63516 [2021-11-22 14:54:23,040 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 160 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 818 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=577, Invalid=2393, Unknown=0, NotChecked=0, Total=2970 [2021-11-22 14:54:23,041 INFO L933 BasicCegarLoop]: 5461 mSDtfsCounter, 12218 mSDsluCounter, 62880 mSDsCounter, 0 mSdLazyCounter, 26356 mSolverCounterSat, 247 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 59.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12218 SdHoareTripleChecker+Valid, 68341 SdHoareTripleChecker+Invalid, 26604 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 247 IncrementalHoareTripleChecker+Valid, 26356 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 73.4s IncrementalHoareTripleChecker+Time [2021-11-22 14:54:23,041 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12218 Valid, 68341 Invalid, 26604 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [247 Valid, 26356 Invalid, 1 Unknown, 0 Unchecked, 73.4s Time] [2021-11-22 14:54:23,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63516 states. [2021-11-22 14:54:25,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63516 to 23241. [2021-11-22 14:54:25,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23241 states, 23187 states have (on average 1.2647172984862207) internal successors, (29325), 23240 states have internal predecessors, (29325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:54:25,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23241 states to 23241 states and 29325 transitions. [2021-11-22 14:54:25,352 INFO L78 Accepts]: Start accepts. Automaton has 23241 states and 29325 transitions. Word has length 180 [2021-11-22 14:54:25,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:54:25,352 INFO L470 AbstractCegarLoop]: Abstraction has 23241 states and 29325 transitions. [2021-11-22 14:54:25,353 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 9.473684210526315) internal successors, (180), 19 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:54:25,353 INFO L276 IsEmpty]: Start isEmpty. Operand 23241 states and 29325 transitions. [2021-11-22 14:54:25,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2021-11-22 14:54:25,363 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:54:25,363 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:54:25,400 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2021-11-22 14:54:25,574 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 14:54:25,574 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-11-22 14:54:25,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:54:25,575 INFO L85 PathProgramCache]: Analyzing trace with hash 1768919172, now seen corresponding path program 1 times [2021-11-22 14:54:25,575 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:54:25,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872141709] [2021-11-22 14:54:25,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:54:25,575 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:54:25,630 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 14:54:25,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [180822259] [2021-11-22 14:54:25,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:54:25,631 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 14:54:25,631 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 14:54:25,632 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 14:54:25,663 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2021-11-22 14:54:26,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:54:26,196 INFO L263 TraceCheckSpWp]: Trace formula consists of 3094 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-22 14:54:26,199 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 14:54:26,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:54:26,448 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 14:54:26,448 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:54:26,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872141709] [2021-11-22 14:54:26,448 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 14:54:26,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [180822259] [2021-11-22 14:54:26,448 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [180822259] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:54:26,449 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:54:26,449 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 14:54:26,449 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248993823] [2021-11-22 14:54:26,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:54:26,449 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 14:54:26,450 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:54:26,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 14:54:26,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 14:54:26,450 INFO L87 Difference]: Start difference. First operand 23241 states and 29325 transitions. Second operand has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 3 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:54:31,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:54:31,409 INFO L93 Difference]: Finished difference Result 69034 states and 87196 transitions. [2021-11-22 14:54:31,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 14:54:31,411 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 3 states have internal predecessors, (181), 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 181 [2021-11-22 14:54:31,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:54:31,478 INFO L225 Difference]: With dead ends: 69034 [2021-11-22 14:54:31,478 INFO L226 Difference]: Without dead ends: 46027 [2021-11-22 14:54:31,500 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 14:54:31,501 INFO L933 BasicCegarLoop]: 2603 mSDtfsCounter, 2447 mSDsluCounter, 2533 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2447 SdHoareTripleChecker+Valid, 5136 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-22 14:54:31,501 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2447 Valid, 5136 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-22 14:54:31,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46027 states. [2021-11-22 14:54:33,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46027 to 23480. [2021-11-22 14:54:33,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23480 states, 23426 states have (on average 1.2620165627934774) internal successors, (29564), 23479 states have internal predecessors, (29564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:54:33,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23480 states to 23480 states and 29564 transitions. [2021-11-22 14:54:33,769 INFO L78 Accepts]: Start accepts. Automaton has 23480 states and 29564 transitions. Word has length 181 [2021-11-22 14:54:33,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:54:33,770 INFO L470 AbstractCegarLoop]: Abstraction has 23480 states and 29564 transitions. [2021-11-22 14:54:33,770 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 3 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:54:33,770 INFO L276 IsEmpty]: Start isEmpty. Operand 23480 states and 29564 transitions. [2021-11-22 14:54:33,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2021-11-22 14:54:33,776 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:54:33,777 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:54:33,808 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2021-11-22 14:54:33,977 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2021-11-22 14:54:33,978 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-11-22 14:54:33,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:54:33,978 INFO L85 PathProgramCache]: Analyzing trace with hash 1569138318, now seen corresponding path program 1 times [2021-11-22 14:54:33,978 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:54:33,979 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997492588] [2021-11-22 14:54:33,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:54:33,979 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:54:34,030 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 14:54:34,030 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1442061295] [2021-11-22 14:54:34,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:54:34,031 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 14:54:34,031 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 14:54:34,032 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 14:54:34,059 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2021-11-22 14:54:34,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:54:34,617 INFO L263 TraceCheckSpWp]: Trace formula consists of 3097 conjuncts, 35 conjunts are in the unsatisfiable core [2021-11-22 14:54:34,620 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 14:54:34,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:54:34,906 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 14:54:34,906 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:54:34,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997492588] [2021-11-22 14:54:34,907 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 14:54:34,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1442061295] [2021-11-22 14:54:34,907 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1442061295] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:54:34,907 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:54:34,908 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-22 14:54:34,908 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452185961] [2021-11-22 14:54:34,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:54:34,908 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-22 14:54:34,909 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:54:34,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-22 14:54:34,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-22 14:54:34,910 INFO L87 Difference]: Start difference. First operand 23480 states and 29564 transitions. Second operand has 7 states, 7 states have (on average 25.857142857142858) internal successors, (181), 7 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:54:44,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:54:44,170 INFO L93 Difference]: Finished difference Result 95905 states and 121187 transitions. [2021-11-22 14:54:44,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-22 14:54:44,171 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.857142857142858) internal successors, (181), 7 states have internal predecessors, (181), 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 181 [2021-11-22 14:54:44,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:54:44,287 INFO L225 Difference]: With dead ends: 95905 [2021-11-22 14:54:44,287 INFO L226 Difference]: Without dead ends: 72302 [2021-11-22 14:54:44,307 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-11-22 14:54:44,307 INFO L933 BasicCegarLoop]: 5009 mSDtfsCounter, 6042 mSDsluCounter, 21434 mSDsCounter, 0 mSdLazyCounter, 941 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6042 SdHoareTripleChecker+Valid, 26443 SdHoareTripleChecker+Invalid, 1059 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 941 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-22 14:54:44,308 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6042 Valid, 26443 Invalid, 1059 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 941 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-11-22 14:54:44,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72302 states. [2021-11-22 14:54:46,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72302 to 23480. [2021-11-22 14:54:46,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23480 states, 23426 states have (on average 1.2583027405446938) internal successors, (29477), 23479 states have internal predecessors, (29477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:54:46,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23480 states to 23480 states and 29477 transitions. [2021-11-22 14:54:46,956 INFO L78 Accepts]: Start accepts. Automaton has 23480 states and 29477 transitions. Word has length 181 [2021-11-22 14:54:46,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:54:46,956 INFO L470 AbstractCegarLoop]: Abstraction has 23480 states and 29477 transitions. [2021-11-22 14:54:46,957 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.857142857142858) internal successors, (181), 7 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:54:46,957 INFO L276 IsEmpty]: Start isEmpty. Operand 23480 states and 29477 transitions. [2021-11-22 14:54:46,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2021-11-22 14:54:46,962 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:54:46,963 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:54:46,989 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2021-11-22 14:54:47,163 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 14:54:47,164 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-11-22 14:54:47,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:54:47,164 INFO L85 PathProgramCache]: Analyzing trace with hash 1231476118, now seen corresponding path program 1 times [2021-11-22 14:54:47,164 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:54:47,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203210532] [2021-11-22 14:54:47,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:54:47,165 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:54:47,227 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 14:54:47,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [647622037] [2021-11-22 14:54:47,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:54:47,228 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 14:54:47,229 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 14:54:47,231 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 14:54:47,275 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2021-11-22 14:54:47,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:54:48,004 INFO L263 TraceCheckSpWp]: Trace formula consists of 3049 conjuncts, 120 conjunts are in the unsatisfiable core [2021-11-22 14:54:48,010 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 14:54:48,032 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-22 14:54:48,155 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-22 14:54:48,156 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-22 14:54:49,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:54:49,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:54:49,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:54:49,075 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 42 treesize of output 29 [2021-11-22 14:54:49,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:54:49,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:54:49,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:54:49,217 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 38 treesize of output 29 [2021-11-22 14:54:49,655 INFO L354 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2021-11-22 14:54:49,655 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 20 treesize of output 22 [2021-11-22 14:54:49,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:54:49,900 INFO L354 Elim1Store]: treesize reduction 64, result has 22.9 percent of original size [2021-11-22 14:54:49,901 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 2 case distinctions, treesize of input 40 treesize of output 42 [2021-11-22 14:54:59,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:54:59,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:54:59,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:54:59,537 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 36 treesize of output 38 [2021-11-22 14:55:06,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:55:06,026 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 14:55:06,026 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:55:06,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203210532] [2021-11-22 14:55:06,027 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 14:55:06,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [647622037] [2021-11-22 14:55:06,027 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [647622037] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:55:06,027 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:55:06,027 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-22 14:55:06,027 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039334042] [2021-11-22 14:55:06,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:55:06,028 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-22 14:55:06,028 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:55:06,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-22 14:55:06,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=242, Unknown=3, NotChecked=0, Total=306 [2021-11-22 14:55:06,029 INFO L87 Difference]: Start difference. First operand 23480 states and 29477 transitions. Second operand has 18 states, 18 states have (on average 10.055555555555555) internal successors, (181), 18 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:55:17,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:55:17,230 INFO L93 Difference]: Finished difference Result 47150 states and 59178 transitions. [2021-11-22 14:55:17,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-22 14:55:17,232 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 10.055555555555555) internal successors, (181), 18 states have internal predecessors, (181), 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 181 [2021-11-22 14:55:17,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:55:17,257 INFO L225 Difference]: With dead ends: 47150 [2021-11-22 14:55:17,257 INFO L226 Difference]: Without dead ends: 24036 [2021-11-22 14:55:17,268 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 17.3s TimeCoverageRelationStatistics Valid=86, Invalid=373, Unknown=3, NotChecked=0, Total=462 [2021-11-22 14:55:17,268 INFO L933 BasicCegarLoop]: 2648 mSDtfsCounter, 227 mSDsluCounter, 8864 mSDsCounter, 0 mSdLazyCounter, 1536 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 227 SdHoareTripleChecker+Valid, 11512 SdHoareTripleChecker+Invalid, 2239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1536 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 695 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2021-11-22 14:55:17,269 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [227 Valid, 11512 Invalid, 2239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1536 Invalid, 0 Unknown, 695 Unchecked, 5.9s Time] [2021-11-22 14:55:17,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24036 states. [2021-11-22 14:55:19,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24036 to 23536. [2021-11-22 14:55:19,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23536 states, 23482 states have (on average 1.2580274252619028) internal successors, (29541), 23535 states have internal predecessors, (29541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:55:19,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23536 states to 23536 states and 29541 transitions. [2021-11-22 14:55:19,576 INFO L78 Accepts]: Start accepts. Automaton has 23536 states and 29541 transitions. Word has length 181 [2021-11-22 14:55:19,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:55:19,577 INFO L470 AbstractCegarLoop]: Abstraction has 23536 states and 29541 transitions. [2021-11-22 14:55:19,577 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 10.055555555555555) internal successors, (181), 18 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:55:19,577 INFO L276 IsEmpty]: Start isEmpty. Operand 23536 states and 29541 transitions. [2021-11-22 14:55:19,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2021-11-22 14:55:19,586 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:55:19,586 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:55:19,633 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2021-11-22 14:55:19,811 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 14:55:19,812 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-11-22 14:55:19,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:55:19,812 INFO L85 PathProgramCache]: Analyzing trace with hash 117785810, now seen corresponding path program 1 times [2021-11-22 14:55:19,812 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:55:19,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648064183] [2021-11-22 14:55:19,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:55:19,813 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:55:19,865 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 14:55:19,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1203465715] [2021-11-22 14:55:19,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:55:19,865 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 14:55:19,866 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 14:55:19,866 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 14:55:19,883 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2021-11-22 14:55:20,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:55:20,615 INFO L263 TraceCheckSpWp]: Trace formula consists of 3058 conjuncts, 38 conjunts are in the unsatisfiable core [2021-11-22 14:55:20,621 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 14:55:21,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:55:21,005 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 14:55:21,005 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:55:21,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648064183] [2021-11-22 14:55:21,006 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 14:55:21,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1203465715] [2021-11-22 14:55:21,006 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1203465715] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:55:21,006 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:55:21,006 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-22 14:55:21,007 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810313763] [2021-11-22 14:55:21,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:55:21,007 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-22 14:55:21,008 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:55:21,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-22 14:55:21,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2021-11-22 14:55:21,008 INFO L87 Difference]: Start difference. First operand 23536 states and 29541 transitions. Second operand has 11 states, 11 states have (on average 16.636363636363637) internal successors, (183), 11 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:55:52,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:55:52,533 INFO L93 Difference]: Finished difference Result 67419 states and 84071 transitions. [2021-11-22 14:55:52,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-11-22 14:55:52,533 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 16.636363636363637) internal successors, (183), 11 states have internal predecessors, (183), 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 183 [2021-11-22 14:55:52,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:55:52,574 INFO L225 Difference]: With dead ends: 67419 [2021-11-22 14:55:52,574 INFO L226 Difference]: Without dead ends: 37104 [2021-11-22 14:55:52,590 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1401 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=800, Invalid=3490, Unknown=0, NotChecked=0, Total=4290 [2021-11-22 14:55:52,591 INFO L933 BasicCegarLoop]: 10556 mSDtfsCounter, 15332 mSDsluCounter, 68251 mSDsCounter, 0 mSdLazyCounter, 11159 mSolverCounterSat, 618 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15332 SdHoareTripleChecker+Valid, 78807 SdHoareTripleChecker+Invalid, 11777 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 618 IncrementalHoareTripleChecker+Valid, 11159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.3s IncrementalHoareTripleChecker+Time [2021-11-22 14:55:52,591 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15332 Valid, 78807 Invalid, 11777 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [618 Valid, 11159 Invalid, 0 Unknown, 0 Unchecked, 25.3s Time] [2021-11-22 14:55:52,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37104 states. [2021-11-22 14:55:53,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37104 to 8240. [2021-11-22 14:55:53,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8240 states, 8186 states have (on average 1.239799657952602) internal successors, (10149), 8239 states have internal predecessors, (10149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:55:53,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8240 states to 8240 states and 10149 transitions. [2021-11-22 14:55:53,633 INFO L78 Accepts]: Start accepts. Automaton has 8240 states and 10149 transitions. Word has length 183 [2021-11-22 14:55:53,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:55:53,634 INFO L470 AbstractCegarLoop]: Abstraction has 8240 states and 10149 transitions. [2021-11-22 14:55:53,634 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 16.636363636363637) internal successors, (183), 11 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:55:53,634 INFO L276 IsEmpty]: Start isEmpty. Operand 8240 states and 10149 transitions. [2021-11-22 14:55:53,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2021-11-22 14:55:53,637 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:55:53,637 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:55:53,667 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2021-11-22 14:55:53,837 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2021-11-22 14:55:53,838 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-11-22 14:55:53,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:55:53,839 INFO L85 PathProgramCache]: Analyzing trace with hash 1141705218, now seen corresponding path program 1 times [2021-11-22 14:55:53,839 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:55:53,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819385516] [2021-11-22 14:55:53,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:55:53,839 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:55:53,898 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 14:55:53,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [631222286] [2021-11-22 14:55:53,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:55:53,899 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 14:55:53,900 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 14:55:53,901 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 14:55:53,927 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2021-11-22 14:55:54,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:55:54,753 INFO L263 TraceCheckSpWp]: Trace formula consists of 3069 conjuncts, 256 conjunts are in the unsatisfiable core [2021-11-22 14:55:54,760 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 14:55:55,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:55:55,284 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2021-11-22 14:55:55,322 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-11-22 14:55:55,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:55:55,576 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2021-11-22 14:55:55,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:55:55,591 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 23 [2021-11-22 14:55:55,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:55:55,998 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 23 [2021-11-22 14:55:56,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:55:56,005 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2021-11-22 14:55:56,160 INFO L354 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2021-11-22 14:55:56,160 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 53 treesize of output 52 [2021-11-22 14:55:56,181 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-22 14:55:56,182 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 30 [2021-11-22 14:55:56,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:55:56,214 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2021-11-22 14:55:56,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:55:56,240 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2021-11-22 14:55:56,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:55:56,785 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-22 14:55:56,785 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 64 treesize of output 59 [2021-11-22 14:55:56,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:55:56,804 INFO L354 Elim1Store]: treesize reduction 17, result has 39.3 percent of original size [2021-11-22 14:55:56,805 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 53 treesize of output 48 [2021-11-22 14:55:57,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:55:57,580 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 14:55:57,581 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:55:57,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819385516] [2021-11-22 14:55:57,581 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 14:55:57,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [631222286] [2021-11-22 14:55:57,581 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [631222286] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:55:57,581 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:55:57,582 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-22 14:55:57,582 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955900434] [2021-11-22 14:55:57,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:55:57,583 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-22 14:55:57,583 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:55:57,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-22 14:55:57,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2021-11-22 14:55:57,584 INFO L87 Difference]: Start difference. First operand 8240 states and 10149 transitions. Second operand has 15 states, 15 states have (on average 12.266666666666667) internal successors, (184), 15 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:56:06,008 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.82s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-22 14:56:21,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:56:21,195 INFO L93 Difference]: Finished difference Result 16405 states and 20213 transitions. [2021-11-22 14:56:21,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-22 14:56:21,196 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 12.266666666666667) internal successors, (184), 15 states have internal predecessors, (184), 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 184 [2021-11-22 14:56:21,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:56:21,204 INFO L225 Difference]: With dead ends: 16405 [2021-11-22 14:56:21,204 INFO L226 Difference]: Without dead ends: 8417 [2021-11-22 14:56:21,211 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=111, Invalid=351, Unknown=0, NotChecked=0, Total=462 [2021-11-22 14:56:21,211 INFO L933 BasicCegarLoop]: 2525 mSDtfsCounter, 2656 mSDsluCounter, 16334 mSDsCounter, 0 mSdLazyCounter, 6804 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2656 SdHoareTripleChecker+Valid, 18859 SdHoareTripleChecker+Invalid, 6827 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 6804 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.5s IncrementalHoareTripleChecker+Time [2021-11-22 14:56:21,211 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2656 Valid, 18859 Invalid, 6827 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [23 Valid, 6804 Invalid, 0 Unknown, 0 Unchecked, 21.5s Time] [2021-11-22 14:56:21,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8417 states. [2021-11-22 14:56:21,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8417 to 8257. [2021-11-22 14:56:21,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8257 states, 8203 states have (on average 1.239424600755821) internal successors, (10167), 8256 states have internal predecessors, (10167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:56:21,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8257 states to 8257 states and 10167 transitions. [2021-11-22 14:56:21,920 INFO L78 Accepts]: Start accepts. Automaton has 8257 states and 10167 transitions. Word has length 184 [2021-11-22 14:56:21,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:56:21,920 INFO L470 AbstractCegarLoop]: Abstraction has 8257 states and 10167 transitions. [2021-11-22 14:56:21,920 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 12.266666666666667) internal successors, (184), 15 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:56:21,921 INFO L276 IsEmpty]: Start isEmpty. Operand 8257 states and 10167 transitions. [2021-11-22 14:56:21,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2021-11-22 14:56:21,923 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:56:21,923 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:56:21,950 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2021-11-22 14:56:22,124 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2021-11-22 14:56:22,124 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-11-22 14:56:22,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:56:22,125 INFO L85 PathProgramCache]: Analyzing trace with hash -1554113020, now seen corresponding path program 1 times [2021-11-22 14:56:22,125 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:56:22,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772305831] [2021-11-22 14:56:22,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:56:22,125 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:56:22,167 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 14:56:22,167 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1627820002] [2021-11-22 14:56:22,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:56:22,168 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 14:56:22,168 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 14:56:22,169 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 14:56:22,196 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2021-11-22 14:56:22,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:56:22,963 INFO L263 TraceCheckSpWp]: Trace formula consists of 3066 conjuncts, 223 conjunts are in the unsatisfiable core [2021-11-22 14:56:22,969 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 14:56:23,119 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-11-22 14:56:23,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:56:23,248 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 23 [2021-11-22 14:56:23,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:56:23,763 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 23 [2021-11-22 14:56:23,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:56:23,781 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2021-11-22 14:56:23,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:56:23,897 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2021-11-22 14:56:23,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:56:23,925 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 23 [2021-11-22 14:56:24,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:56:24,028 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2021-11-22 14:56:24,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:56:24,044 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2021-11-22 14:56:24,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:56:24,549 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 56 [2021-11-22 14:56:24,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:56:24,576 INFO L354 Elim1Store]: treesize reduction 17, result has 39.3 percent of original size [2021-11-22 14:56:24,576 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 53 treesize of output 48 [2021-11-22 14:56:27,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:56:27,769 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-22 14:56:27,769 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 57 treesize of output 52 [2021-11-22 14:56:27,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:56:27,774 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 34 [2021-11-22 14:56:28,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:56:28,236 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 14:56:28,236 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:56:28,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772305831] [2021-11-22 14:56:28,236 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 14:56:28,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1627820002] [2021-11-22 14:56:28,237 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1627820002] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:56:28,237 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:56:28,237 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2021-11-22 14:56:28,237 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128027836] [2021-11-22 14:56:28,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:56:28,238 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-22 14:56:28,238 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:56:28,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-22 14:56:28,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=306, Unknown=1, NotChecked=0, Total=380 [2021-11-22 14:56:28,239 INFO L87 Difference]: Start difference. First operand 8257 states and 10167 transitions. Second operand has 20 states, 20 states have (on average 9.2) internal successors, (184), 20 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:56:49,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:56:49,353 INFO L93 Difference]: Finished difference Result 16642 states and 20492 transitions. [2021-11-22 14:56:49,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-22 14:56:49,354 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 9.2) internal successors, (184), 20 states have internal predecessors, (184), 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 184 [2021-11-22 14:56:49,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:56:49,362 INFO L225 Difference]: With dead ends: 16642 [2021-11-22 14:56:49,362 INFO L226 Difference]: Without dead ends: 8595 [2021-11-22 14:56:49,366 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 164 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=190, Invalid=739, Unknown=1, NotChecked=0, Total=930 [2021-11-22 14:56:49,367 INFO L933 BasicCegarLoop]: 2519 mSDtfsCounter, 2896 mSDsluCounter, 19308 mSDsCounter, 0 mSdLazyCounter, 6706 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2896 SdHoareTripleChecker+Valid, 21827 SdHoareTripleChecker+Invalid, 6752 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 6706 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.4s IncrementalHoareTripleChecker+Time [2021-11-22 14:56:49,367 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2896 Valid, 21827 Invalid, 6752 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [46 Valid, 6706 Invalid, 0 Unknown, 0 Unchecked, 18.4s Time] [2021-11-22 14:56:49,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8595 states. [2021-11-22 14:56:50,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8595 to 8257. [2021-11-22 14:56:50,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8257 states, 8203 states have (on average 1.2391807875167622) internal successors, (10165), 8256 states have internal predecessors, (10165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:56:50,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8257 states to 8257 states and 10165 transitions. [2021-11-22 14:56:50,061 INFO L78 Accepts]: Start accepts. Automaton has 8257 states and 10165 transitions. Word has length 184 [2021-11-22 14:56:50,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:56:50,061 INFO L470 AbstractCegarLoop]: Abstraction has 8257 states and 10165 transitions. [2021-11-22 14:56:50,061 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 9.2) internal successors, (184), 20 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:56:50,062 INFO L276 IsEmpty]: Start isEmpty. Operand 8257 states and 10165 transitions. [2021-11-22 14:56:50,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2021-11-22 14:56:50,064 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:56:50,064 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:56:50,091 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2021-11-22 14:56:50,265 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2021-11-22 14:56:50,265 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-11-22 14:56:50,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:56:50,266 INFO L85 PathProgramCache]: Analyzing trace with hash 2051022786, now seen corresponding path program 1 times [2021-11-22 14:56:50,266 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:56:50,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912580948] [2021-11-22 14:56:50,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:56:50,266 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:56:50,307 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 14:56:50,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [327456724] [2021-11-22 14:56:50,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:56:50,307 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 14:56:50,308 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 14:56:50,308 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 14:56:50,339 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2021-11-22 14:56:51,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:56:51,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 3063 conjuncts, 171 conjunts are in the unsatisfiable core [2021-11-22 14:56:51,207 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 14:56:51,213 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-22 14:56:51,344 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-22 14:56:51,344 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-11-22 14:56:51,400 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 23 [2021-11-22 14:56:51,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:56:51,541 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 32 [2021-11-22 14:56:51,759 INFO L354 Elim1Store]: treesize reduction 46, result has 27.0 percent of original size [2021-11-22 14:56:51,759 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 28 [2021-11-22 14:56:51,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:56:51,896 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 40 [2021-11-22 14:56:52,164 INFO L354 Elim1Store]: treesize reduction 56, result has 25.3 percent of original size [2021-11-22 14:56:52,164 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 68 treesize of output 52 [2021-11-22 14:56:53,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:56:53,259 INFO L354 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2021-11-22 14:56:53,260 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 2 case distinctions, treesize of input 68 treesize of output 52 [2021-11-22 14:56:53,628 INFO L354 Elim1Store]: treesize reduction 56, result has 21.1 percent of original size [2021-11-22 14:56:53,628 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 49 treesize of output 43 [2021-11-22 14:56:53,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:56:53,793 INFO L354 Elim1Store]: treesize reduction 118, result has 18.1 percent of original size [2021-11-22 14:56:53,793 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 73 treesize of output 55 [2021-11-22 14:56:54,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:56:54,185 INFO L354 Elim1Store]: treesize reduction 17, result has 39.3 percent of original size [2021-11-22 14:56:54,185 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 2 case distinctions, treesize of input 43 treesize of output 32 [2021-11-22 14:56:54,560 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 16 [2021-11-22 14:56:54,651 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 16 [2021-11-22 14:56:54,978 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 16 [2021-11-22 14:56:55,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:56:55,144 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 14:56:55,144 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:56:55,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912580948] [2021-11-22 14:56:55,144 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 14:56:55,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [327456724] [2021-11-22 14:56:55,144 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [327456724] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:56:55,144 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:56:55,145 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [] total 29 [2021-11-22 14:56:55,145 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781022688] [2021-11-22 14:56:55,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:56:55,146 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-11-22 14:56:55,146 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:56:55,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-11-22 14:56:55,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=696, Unknown=1, NotChecked=0, Total=812 [2021-11-22 14:56:55,147 INFO L87 Difference]: Start difference. First operand 8257 states and 10165 transitions. Second operand has 29 states, 29 states have (on average 6.344827586206897) internal successors, (184), 29 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:57:29,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:57:29,525 INFO L93 Difference]: Finished difference Result 19000 states and 23125 transitions. [2021-11-22 14:57:29,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-11-22 14:57:29,526 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 6.344827586206897) internal successors, (184), 29 states have internal predecessors, (184), 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 184 [2021-11-22 14:57:29,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:57:29,542 INFO L225 Difference]: With dead ends: 19000 [2021-11-22 14:57:29,542 INFO L226 Difference]: Without dead ends: 16779 [2021-11-22 14:57:29,547 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1597 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=614, Invalid=4355, Unknown=1, NotChecked=0, Total=4970 [2021-11-22 14:57:29,548 INFO L933 BasicCegarLoop]: 4687 mSDtfsCounter, 10330 mSDsluCounter, 42989 mSDsCounter, 0 mSdLazyCounter, 14316 mSolverCounterSat, 756 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10330 SdHoareTripleChecker+Valid, 47676 SdHoareTripleChecker+Invalid, 16656 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 756 IncrementalHoareTripleChecker+Valid, 14316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1584 IncrementalHoareTripleChecker+Unchecked, 30.4s IncrementalHoareTripleChecker+Time [2021-11-22 14:57:29,548 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10330 Valid, 47676 Invalid, 16656 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [756 Valid, 14316 Invalid, 0 Unknown, 1584 Unchecked, 30.4s Time] [2021-11-22 14:57:29,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16779 states. [2021-11-22 14:57:30,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16779 to 13979. [2021-11-22 14:57:30,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13979 states, 13925 states have (on average 1.2402154398563734) internal successors, (17270), 13978 states have internal predecessors, (17270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:57:30,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13979 states to 13979 states and 17270 transitions. [2021-11-22 14:57:30,942 INFO L78 Accepts]: Start accepts. Automaton has 13979 states and 17270 transitions. Word has length 184 [2021-11-22 14:57:30,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:57:30,942 INFO L470 AbstractCegarLoop]: Abstraction has 13979 states and 17270 transitions. [2021-11-22 14:57:30,942 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 6.344827586206897) internal successors, (184), 29 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:57:30,942 INFO L276 IsEmpty]: Start isEmpty. Operand 13979 states and 17270 transitions. [2021-11-22 14:57:30,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2021-11-22 14:57:30,947 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:57:30,947 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:57:30,983 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2021-11-22 14:57:31,147 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2021-11-22 14:57:31,148 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-11-22 14:57:31,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:57:31,148 INFO L85 PathProgramCache]: Analyzing trace with hash 776142704, now seen corresponding path program 1 times [2021-11-22 14:57:31,148 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:57:31,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661312914] [2021-11-22 14:57:31,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:57:31,149 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:57:31,193 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 14:57:31,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1404184587] [2021-11-22 14:57:31,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:57:31,194 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 14:57:31,194 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 14:57:31,195 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 14:57:31,197 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2021-11-22 14:57:31,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:57:31,888 INFO L263 TraceCheckSpWp]: Trace formula consists of 3075 conjuncts, 42 conjunts are in the unsatisfiable core [2021-11-22 14:57:31,893 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 14:57:32,485 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-11-22 14:57:32,488 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2021-11-22 14:57:32,669 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-22 14:57:32,669 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 14:57:32,669 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:57:32,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661312914] [2021-11-22 14:57:32,670 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 14:57:32,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1404184587] [2021-11-22 14:57:32,670 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1404184587] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:57:32,670 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:57:32,670 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-22 14:57:32,671 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854196001] [2021-11-22 14:57:32,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:57:32,672 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-22 14:57:32,672 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:57:32,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-22 14:57:32,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-11-22 14:57:32,673 INFO L87 Difference]: Start difference. First operand 13979 states and 17270 transitions. Second operand has 10 states, 10 states have (on average 18.5) internal successors, (185), 10 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:57:41,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:57:41,483 INFO L93 Difference]: Finished difference Result 27973 states and 34556 transitions. [2021-11-22 14:57:41,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-22 14:57:41,484 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 18.5) internal successors, (185), 10 states have internal predecessors, (185), 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 185 [2021-11-22 14:57:41,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:57:41,499 INFO L225 Difference]: With dead ends: 27973 [2021-11-22 14:57:41,499 INFO L226 Difference]: Without dead ends: 14470 [2021-11-22 14:57:41,508 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=130, Invalid=290, Unknown=0, NotChecked=0, Total=420 [2021-11-22 14:57:41,508 INFO L933 BasicCegarLoop]: 2508 mSDtfsCounter, 3501 mSDsluCounter, 14506 mSDsCounter, 0 mSdLazyCounter, 2757 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3501 SdHoareTripleChecker+Valid, 17014 SdHoareTripleChecker+Invalid, 2818 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 2757 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2021-11-22 14:57:41,509 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3501 Valid, 17014 Invalid, 2818 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 2757 Invalid, 0 Unknown, 0 Unchecked, 6.9s Time] [2021-11-22 14:57:41,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14470 states. [2021-11-22 14:57:42,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14470 to 14087. [2021-11-22 14:57:42,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14087 states, 14033 states have (on average 1.2395068766479014) internal successors, (17394), 14086 states have internal predecessors, (17394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:57:42,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14087 states to 14087 states and 17394 transitions. [2021-11-22 14:57:42,899 INFO L78 Accepts]: Start accepts. Automaton has 14087 states and 17394 transitions. Word has length 185 [2021-11-22 14:57:42,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:57:42,900 INFO L470 AbstractCegarLoop]: Abstraction has 14087 states and 17394 transitions. [2021-11-22 14:57:42,900 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 18.5) internal successors, (185), 10 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:57:42,900 INFO L276 IsEmpty]: Start isEmpty. Operand 14087 states and 17394 transitions. [2021-11-22 14:57:42,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2021-11-22 14:57:42,904 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:57:42,904 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:57:42,930 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2021-11-22 14:57:43,104 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2021-11-22 14:57:43,105 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-11-22 14:57:43,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:57:43,105 INFO L85 PathProgramCache]: Analyzing trace with hash 973282812, now seen corresponding path program 1 times [2021-11-22 14:57:43,105 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:57:43,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302426108] [2021-11-22 14:57:43,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:57:43,106 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:57:43,145 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 14:57:43,145 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [833890269] [2021-11-22 14:57:43,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:57:43,146 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 14:57:43,146 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 14:57:43,147 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 14:57:43,171 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2021-11-22 14:57:43,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:57:43,783 INFO L263 TraceCheckSpWp]: Trace formula consists of 3076 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-22 14:57:43,786 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 14:57:44,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:57:44,266 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 14:57:44,266 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:57:44,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302426108] [2021-11-22 14:57:44,267 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 14:57:44,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [833890269] [2021-11-22 14:57:44,267 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [833890269] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:57:44,267 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:57:44,267 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 14:57:44,268 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020950333] [2021-11-22 14:57:44,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:57:44,268 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 14:57:44,269 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:57:44,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 14:57:44,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 14:57:44,269 INFO L87 Difference]: Start difference. First operand 14087 states and 17394 transitions. Second operand has 5 states, 5 states have (on average 37.2) internal successors, (186), 5 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:58:09,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:58:09,181 INFO L93 Difference]: Finished difference Result 35269 states and 43100 transitions. [2021-11-22 14:58:09,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 14:58:09,185 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 37.2) internal successors, (186), 5 states have internal predecessors, (186), 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 186 [2021-11-22 14:58:09,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:58:09,206 INFO L225 Difference]: With dead ends: 35269 [2021-11-22 14:58:09,206 INFO L226 Difference]: Without dead ends: 21558 [2021-11-22 14:58:09,215 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-22 14:58:09,215 INFO L933 BasicCegarLoop]: 2826 mSDtfsCounter, 2102 mSDsluCounter, 6276 mSDsCounter, 0 mSdLazyCounter, 3961 mSolverCounterSat, 305 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2102 SdHoareTripleChecker+Valid, 9102 SdHoareTripleChecker+Invalid, 4266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 305 IncrementalHoareTripleChecker+Valid, 3961 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.5s IncrementalHoareTripleChecker+Time [2021-11-22 14:58:09,216 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2102 Valid, 9102 Invalid, 4266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [305 Valid, 3961 Invalid, 0 Unknown, 0 Unchecked, 22.5s Time] [2021-11-22 14:58:09,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21558 states. [2021-11-22 14:58:10,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21558 to 14087. [2021-11-22 14:58:10,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14087 states, 14033 states have (on average 1.2072258248414451) internal successors, (16941), 14086 states have internal predecessors, (16941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:58:10,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14087 states to 14087 states and 16941 transitions. [2021-11-22 14:58:10,628 INFO L78 Accepts]: Start accepts. Automaton has 14087 states and 16941 transitions. Word has length 186 [2021-11-22 14:58:10,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:58:10,628 INFO L470 AbstractCegarLoop]: Abstraction has 14087 states and 16941 transitions. [2021-11-22 14:58:10,628 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 37.2) internal successors, (186), 5 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:58:10,628 INFO L276 IsEmpty]: Start isEmpty. Operand 14087 states and 16941 transitions. [2021-11-22 14:58:10,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2021-11-22 14:58:10,633 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:58:10,633 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:58:10,662 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2021-11-22 14:58:10,833 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2021-11-22 14:58:10,834 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-11-22 14:58:10,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:58:10,834 INFO L85 PathProgramCache]: Analyzing trace with hash -988291846, now seen corresponding path program 1 times [2021-11-22 14:58:10,834 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:58:10,834 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214861678] [2021-11-22 14:58:10,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:58:10,835 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:58:10,875 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 14:58:10,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [534801339] [2021-11-22 14:58:10,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:58:10,876 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 14:58:10,876 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 14:58:10,877 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 14:58:10,894 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2021-11-22 14:58:11,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:58:11,676 INFO L263 TraceCheckSpWp]: Trace formula consists of 3071 conjuncts, 118 conjunts are in the unsatisfiable core [2021-11-22 14:58:11,680 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 14:58:12,333 INFO L354 Elim1Store]: treesize reduction 25, result has 43.2 percent of original size [2021-11-22 14:58:12,333 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 50 [2021-11-22 14:58:12,349 INFO L354 Elim1Store]: treesize reduction 25, result has 43.2 percent of original size [2021-11-22 14:58:12,349 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 48 [2021-11-22 14:58:12,709 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2021-11-22 14:58:12,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:58:12,781 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 14:58:12,781 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:58:12,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214861678] [2021-11-22 14:58:12,782 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 14:58:12,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [534801339] [2021-11-22 14:58:12,782 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [534801339] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:58:12,782 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:58:12,782 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-11-22 14:58:12,782 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309704918] [2021-11-22 14:58:12,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:58:12,783 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-22 14:58:12,783 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:58:12,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-22 14:58:12,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2021-11-22 14:58:12,784 INFO L87 Difference]: Start difference. First operand 14087 states and 16941 transitions. Second operand has 16 states, 16 states have (on average 11.625) internal successors, (186), 16 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:58:29,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:58:29,828 INFO L93 Difference]: Finished difference Result 25707 states and 30862 transitions. [2021-11-22 14:58:29,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-11-22 14:58:29,829 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 11.625) internal successors, (186), 16 states have internal predecessors, (186), 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 186 [2021-11-22 14:58:29,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:58:29,849 INFO L225 Difference]: With dead ends: 25707 [2021-11-22 14:58:29,850 INFO L226 Difference]: Without dead ends: 19015 [2021-11-22 14:58:29,858 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 412 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=430, Invalid=1462, Unknown=0, NotChecked=0, Total=1892 [2021-11-22 14:58:29,859 INFO L933 BasicCegarLoop]: 2902 mSDtfsCounter, 7982 mSDsluCounter, 21262 mSDsCounter, 0 mSdLazyCounter, 4798 mSolverCounterSat, 139 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7982 SdHoareTripleChecker+Valid, 24164 SdHoareTripleChecker+Invalid, 4937 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 4798 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.1s IncrementalHoareTripleChecker+Time [2021-11-22 14:58:29,859 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7982 Valid, 24164 Invalid, 4937 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [139 Valid, 4798 Invalid, 0 Unknown, 0 Unchecked, 13.1s Time] [2021-11-22 14:58:29,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19015 states. [2021-11-22 14:58:31,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19015 to 14087. [2021-11-22 14:58:31,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14087 states, 14033 states have (on average 1.2062281764412457) internal successors, (16927), 14086 states have internal predecessors, (16927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:58:31,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14087 states to 14087 states and 16927 transitions. [2021-11-22 14:58:31,417 INFO L78 Accepts]: Start accepts. Automaton has 14087 states and 16927 transitions. Word has length 186 [2021-11-22 14:58:31,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:58:31,417 INFO L470 AbstractCegarLoop]: Abstraction has 14087 states and 16927 transitions. [2021-11-22 14:58:31,417 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 11.625) internal successors, (186), 16 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:58:31,417 INFO L276 IsEmpty]: Start isEmpty. Operand 14087 states and 16927 transitions. [2021-11-22 14:58:31,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2021-11-22 14:58:31,421 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:58:31,422 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:58:31,450 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2021-11-22 14:58:31,622 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2021-11-22 14:58:31,622 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-11-22 14:58:31,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:58:31,623 INFO L85 PathProgramCache]: Analyzing trace with hash -1497764936, now seen corresponding path program 1 times [2021-11-22 14:58:31,623 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:58:31,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87186043] [2021-11-22 14:58:31,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:58:31,623 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:58:31,668 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 14:58:31,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1078314997] [2021-11-22 14:58:31,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:58:31,669 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 14:58:31,669 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 14:58:31,670 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 14:58:31,680 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2021-11-22 14:58:32,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:58:32,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 3076 conjuncts, 276 conjunts are in the unsatisfiable core [2021-11-22 14:58:32,730 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 14:58:33,102 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2021-11-22 14:58:33,256 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-22 14:58:33,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:58:33,371 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-22 14:58:33,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:58:33,568 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-22 14:58:33,655 INFO L354 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2021-11-22 14:58:33,655 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 25 [2021-11-22 14:58:33,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:58:33,674 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-11-22 14:58:33,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:58:33,981 INFO L354 Elim1Store]: treesize reduction 17, result has 39.3 percent of original size [2021-11-22 14:58:33,981 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 32 treesize of output 27 [2021-11-22 14:58:34,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:58:34,289 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-11-22 14:58:34,698 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2021-11-22 14:58:34,861 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2021-11-22 14:58:35,158 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2021-11-22 14:58:35,204 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-22 14:58:35,205 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 37 [2021-11-22 14:58:35,556 INFO L354 Elim1Store]: treesize reduction 25, result has 43.2 percent of original size [2021-11-22 14:58:35,556 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 24 [2021-11-22 14:58:36,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:58:36,313 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 40 [2021-11-22 14:58:36,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:58:36,321 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 25 [2021-11-22 14:58:36,386 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 32 [2021-11-22 14:58:36,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:58:36,523 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 14:58:36,523 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:58:36,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87186043] [2021-11-22 14:58:36,523 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 14:58:36,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1078314997] [2021-11-22 14:58:36,523 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1078314997] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:58:36,523 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:58:36,523 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [43] imperfect sequences [] total 43 [2021-11-22 14:58:36,524 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442140412] [2021-11-22 14:58:36,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:58:36,524 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2021-11-22 14:58:36,525 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:58:36,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2021-11-22 14:58:36,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=1648, Unknown=0, NotChecked=0, Total=1806 [2021-11-22 14:58:36,526 INFO L87 Difference]: Start difference. First operand 14087 states and 16927 transitions. Second operand has 43 states, 43 states have (on average 4.325581395348837) internal successors, (186), 43 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:59:38,501 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-22 15:00:17,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:00:17,838 INFO L93 Difference]: Finished difference Result 68668 states and 82119 transitions. [2021-11-22 15:00:17,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 202 states. [2021-11-22 15:00:17,840 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 4.325581395348837) internal successors, (186), 43 states have internal predecessors, (186), 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 186 [2021-11-22 15:00:17,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:00:17,907 INFO L225 Difference]: With dead ends: 68668 [2021-11-22 15:00:17,907 INFO L226 Difference]: Without dead ends: 62962 [2021-11-22 15:00:17,926 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 379 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 235 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22316 ImplicationChecksByTransitivity, 26.1s TimeCoverageRelationStatistics Valid=7367, Invalid=48565, Unknown=0, NotChecked=0, Total=55932 [2021-11-22 15:00:17,927 INFO L933 BasicCegarLoop]: 5628 mSDtfsCounter, 49279 mSDsluCounter, 124467 mSDsCounter, 0 mSdLazyCounter, 36988 mSolverCounterSat, 4111 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 51.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49279 SdHoareTripleChecker+Valid, 130095 SdHoareTripleChecker+Invalid, 41100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.4s SdHoareTripleChecker+Time, 4111 IncrementalHoareTripleChecker+Valid, 36988 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 67.2s IncrementalHoareTripleChecker+Time [2021-11-22 15:00:17,927 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [49279 Valid, 130095 Invalid, 41100 Unknown, 0 Unchecked, 0.4s Time], IncrementalHoareTripleChecker [4111 Valid, 36988 Invalid, 1 Unknown, 0 Unchecked, 67.2s Time] [2021-11-22 15:00:17,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62962 states. [2021-11-22 15:00:21,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62962 to 28052. [2021-11-22 15:00:21,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28052 states, 27998 states have (on average 1.203085934709622) internal successors, (33684), 28051 states have internal predecessors, (33684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:00:21,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28052 states to 28052 states and 33684 transitions. [2021-11-22 15:00:21,870 INFO L78 Accepts]: Start accepts. Automaton has 28052 states and 33684 transitions. Word has length 186 [2021-11-22 15:00:21,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:00:21,871 INFO L470 AbstractCegarLoop]: Abstraction has 28052 states and 33684 transitions. [2021-11-22 15:00:21,871 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 4.325581395348837) internal successors, (186), 43 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:00:21,871 INFO L276 IsEmpty]: Start isEmpty. Operand 28052 states and 33684 transitions. [2021-11-22 15:00:21,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-11-22 15:00:21,876 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:00:21,876 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:00:21,904 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2021-11-22 15:00:22,077 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2021-11-22 15:00:22,077 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-11-22 15:00:22,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:00:22,077 INFO L85 PathProgramCache]: Analyzing trace with hash 752221785, now seen corresponding path program 1 times [2021-11-22 15:00:22,077 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:00:22,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655596280] [2021-11-22 15:00:22,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:00:22,078 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:00:22,112 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 15:00:22,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [948451694] [2021-11-22 15:00:22,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:00:22,113 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:00:22,113 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:00:22,116 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 15:00:22,155 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa0e72ae-fe33-4de7-b1bc-0ebf02db47a2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2021-11-22 15:00:22,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:00:22,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 3038 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-22 15:00:22,616 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:00:23,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:00:23,017 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 15:00:23,017 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:00:23,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655596280] [2021-11-22 15:00:23,018 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 15:00:23,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [948451694] [2021-11-22 15:00:23,018 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [948451694] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:00:23,018 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:00:23,018 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-22 15:00:23,018 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456928219] [2021-11-22 15:00:23,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:00:23,019 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-22 15:00:23,019 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:00:23,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-22 15:00:23,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-22 15:00:23,019 INFO L87 Difference]: Start difference. First operand 28052 states and 33684 transitions. Second operand has 9 states, 9 states have (on average 21.0) internal successors, (189), 8 states have internal predecessors, (189), 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)