./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_priority_queue_push_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_priority_queue_push_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash d8b9169d0d63d8238da177db4999afabb0efa6e97e1e7cd257e8474f76788f17 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 12:04:52,907 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 12:04:52,910 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 12:04:52,954 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 12:04:52,957 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 12:04:52,962 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 12:04:52,964 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 12:04:52,969 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 12:04:52,973 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 12:04:52,977 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 12:04:52,980 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 12:04:52,983 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 12:04:52,984 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 12:04:52,990 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 12:04:52,995 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 12:04:52,997 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 12:04:53,000 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 12:04:53,002 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 12:04:53,005 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 12:04:53,011 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 12:04:53,015 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 12:04:53,018 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 12:04:53,021 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 12:04:53,022 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 12:04:53,033 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 12:04:53,037 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 12:04:53,037 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 12:04:53,039 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 12:04:53,041 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 12:04:53,044 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 12:04:53,045 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 12:04:53,046 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 12:04:53,048 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 12:04:53,050 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 12:04:53,052 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 12:04:53,052 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 12:04:53,053 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 12:04:53,054 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 12:04:53,054 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 12:04:53,056 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 12:04:53,057 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 12:04:53,059 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-20 12:04:53,109 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 12:04:53,114 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 12:04:53,115 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 12:04:53,115 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 12:04:53,117 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 12:04:53,117 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 12:04:53,118 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 12:04:53,119 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 12:04:53,119 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 12:04:53,120 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 12:04:53,121 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 12:04:53,122 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 12:04:53,122 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 12:04:53,122 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 12:04:53,123 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 12:04:53,123 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 12:04:53,124 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 12:04:53,124 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 12:04:53,124 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 12:04:53,125 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 12:04:53,125 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 12:04:53,126 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:04:53,126 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 12:04:53,127 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 12:04:53,127 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 12:04:53,127 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 12:04:53,128 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 12:04:53,128 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 12:04:53,129 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 12:04:53,129 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 12:04:53,130 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_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d8b9169d0d63d8238da177db4999afabb0efa6e97e1e7cd257e8474f76788f17 [2022-11-20 12:04:53,502 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 12:04:53,549 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 12:04:53,552 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 12:04:53,555 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 12:04:53,556 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 12:04:53,557 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/aws-c-common/aws_priority_queue_push_harness.i [2022-11-20 12:04:57,182 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 12:04:57,844 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 12:04:57,845 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/sv-benchmarks/c/aws-c-common/aws_priority_queue_push_harness.i [2022-11-20 12:04:57,884 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN/data/f566175b9/befe0a18e2de4defaee8c9561fa96223/FLAG754dad7a8 [2022-11-20 12:04:57,903 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN/data/f566175b9/befe0a18e2de4defaee8c9561fa96223 [2022-11-20 12:04:57,906 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 12:04:57,908 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 12:04:57,910 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 12:04:57,911 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 12:04:57,915 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 12:04:57,916 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:04:57" (1/1) ... [2022-11-20 12:04:57,918 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12b5f25a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:04:57, skipping insertion in model container [2022-11-20 12:04:57,918 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:04:57" (1/1) ... [2022-11-20 12:04:57,928 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 12:04:58,066 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 12:04:58,369 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/sv-benchmarks/c/aws-c-common/aws_priority_queue_push_harness.i[4497,4510] [2022-11-20 12:04:58,380 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/sv-benchmarks/c/aws-c-common/aws_priority_queue_push_harness.i[4557,4570] [2022-11-20 12:04:59,787 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:04:59,792 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:04:59,793 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:04:59,796 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:04:59,799 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:04:59,818 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:04:59,832 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:04:59,834 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:04:59,835 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:04:59,838 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:04:59,839 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:04:59,840 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:04:59,840 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:05:00,402 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-20 12:05:00,406 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-20 12:05:00,411 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-20 12:05:00,413 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-20 12:05:00,417 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-20 12:05:00,419 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-20 12:05:00,421 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-20 12:05:00,422 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-20 12:05:00,423 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-20 12:05:00,440 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-20 12:05:00,763 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-20 12:05:00,820 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:05:00,829 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:05:00,939 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:05:00,940 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:05:00,941 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:05:00,941 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:05:00,942 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:05:00,942 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:05:00,943 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:05:00,944 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:05:00,945 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:05:00,945 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:05:00,946 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:05:00,946 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:05:00,947 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:05:00,984 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:05:00,985 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:05:00,985 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:05:00,985 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:05:00,989 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:05:00,990 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:05:01,013 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:05:01,015 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:05:01,015 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:05:01,070 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:05:01,125 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 12:05:01,160 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/sv-benchmarks/c/aws-c-common/aws_priority_queue_push_harness.i[4497,4510] [2022-11-20 12:05:01,161 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/sv-benchmarks/c/aws-c-common/aws_priority_queue_push_harness.i[4557,4570] [2022-11-20 12:05:01,218 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:05:01,219 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:05:01,219 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:05:01,220 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:05:01,221 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:05:01,231 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:05:01,231 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:05:01,232 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:05:01,234 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:05:01,236 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:05:01,237 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:05:01,238 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:05:01,239 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:05:01,305 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-20 12:05:01,306 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-20 12:05:01,307 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-20 12:05:01,308 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-20 12:05:01,310 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-20 12:05:01,313 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-20 12:05:01,314 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-20 12:05:01,315 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-20 12:05:01,316 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-20 12:05:01,319 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-20 12:05:01,362 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-20 12:05:01,391 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:05:01,400 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:05:01,445 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:05:01,446 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:05:01,447 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:05:01,447 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:05:01,448 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:05:01,448 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:05:01,448 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:05:01,449 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:05:01,450 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:05:01,450 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:05:01,451 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:05:01,451 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:05:01,452 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:05:01,453 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:05:01,454 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:05:01,454 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:05:01,455 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:05:01,458 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:05:01,458 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:05:01,468 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:05:01,471 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:05:01,471 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:05:01,490 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:05:01,741 INFO L208 MainTranslator]: Completed translation [2022-11-20 12:05:01,741 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:05:01 WrapperNode [2022-11-20 12:05:01,741 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 12:05:01,743 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 12:05:01,743 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 12:05:01,743 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 12:05:01,752 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:05:01" (1/1) ... [2022-11-20 12:05:01,873 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:05:01" (1/1) ... [2022-11-20 12:05:01,960 INFO L138 Inliner]: procedures = 697, calls = 1878, calls flagged for inlining = 60, calls inlined = 19, statements flattened = 1162 [2022-11-20 12:05:01,960 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 12:05:01,961 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 12:05:01,962 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 12:05:01,962 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 12:05:01,974 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:05:01" (1/1) ... [2022-11-20 12:05:01,975 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:05:01" (1/1) ... [2022-11-20 12:05:01,989 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:05:01" (1/1) ... [2022-11-20 12:05:01,989 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:05:01" (1/1) ... [2022-11-20 12:05:02,066 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:05:01" (1/1) ... [2022-11-20 12:05:02,075 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:05:01" (1/1) ... [2022-11-20 12:05:02,100 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:05:01" (1/1) ... [2022-11-20 12:05:02,122 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:05:01" (1/1) ... [2022-11-20 12:05:02,146 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 12:05:02,147 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 12:05:02,147 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 12:05:02,148 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 12:05:02,149 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:05:01" (1/1) ... [2022-11-20 12:05:02,160 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:05:02,174 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:05:02,192 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 12:05:02,214 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 12:05:02,250 INFO L130 BoogieDeclarations]: Found specification of procedure s_swap [2022-11-20 12:05:02,250 INFO L138 BoogieDeclarations]: Found implementation of procedure s_swap [2022-11-20 12:05:02,250 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_init_dynamic [2022-11-20 12:05:02,250 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_init_dynamic [2022-11-20 12:05:02,251 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2022-11-20 12:05:02,251 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2022-11-20 12:05:02,251 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 12:05:02,251 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2022-11-20 12:05:02,251 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2022-11-20 12:05:02,252 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2022-11-20 12:05:02,252 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2022-11-20 12:05:02,252 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-11-20 12:05:02,252 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-11-20 12:05:02,252 INFO L130 BoogieDeclarations]: Found specification of procedure aws_allocator_is_valid [2022-11-20 12:05:02,253 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_allocator_is_valid [2022-11-20 12:05:02,253 INFO L130 BoogieDeclarations]: Found specification of procedure s_sift_up [2022-11-20 12:05:02,253 INFO L138 BoogieDeclarations]: Found implementation of procedure s_sift_up [2022-11-20 12:05:02,253 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 12:05:02,253 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2022-11-20 12:05:02,254 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2022-11-20 12:05:02,255 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-20 12:05:02,258 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-20 12:05:02,258 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 12:05:02,260 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 12:05:02,260 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-20 12:05:02,260 INFO L130 BoogieDeclarations]: Found specification of procedure my_abort [2022-11-20 12:05:02,261 INFO L138 BoogieDeclarations]: Found implementation of procedure my_abort [2022-11-20 12:05:02,262 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2022-11-20 12:05:02,262 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2022-11-20 12:05:02,263 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 12:05:02,267 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 12:05:02,267 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-11-20 12:05:02,267 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-11-20 12:05:02,267 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2022-11-20 12:05:02,267 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2022-11-20 12:05:02,267 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2022-11-20 12:05:02,268 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2022-11-20 12:05:02,268 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_is_valid [2022-11-20 12:05:02,268 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_is_valid [2022-11-20 12:05:02,268 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_release [2022-11-20 12:05:02,268 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_release [2022-11-20 12:05:02,268 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2022-11-20 12:05:02,268 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2022-11-20 12:05:02,269 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-20 12:05:02,269 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-20 12:05:02,269 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-20 12:05:02,269 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-20 12:05:02,269 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2022-11-20 12:05:02,269 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2022-11-20 12:05:02,270 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_pop_back [2022-11-20 12:05:02,270 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_pop_back [2022-11-20 12:05:02,270 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_acquire [2022-11-20 12:05:02,270 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_acquire [2022-11-20 12:05:02,270 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 12:05:02,270 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2022-11-20 12:05:02,270 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2022-11-20 12:05:02,272 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-20 12:05:02,272 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-20 12:05:02,272 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_get_at_ptr [2022-11-20 12:05:02,273 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_get_at_ptr [2022-11-20 12:05:02,273 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2022-11-20 12:05:02,273 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2022-11-20 12:05:02,273 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2022-11-20 12:05:02,273 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2022-11-20 12:05:02,273 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2022-11-20 12:05:02,274 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2022-11-20 12:05:02,274 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 12:05:02,274 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2022-11-20 12:05:02,274 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2022-11-20 12:05:02,274 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_set_at [2022-11-20 12:05:02,274 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_set_at [2022-11-20 12:05:02,274 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_backpointer_index_valid [2022-11-20 12:05:02,275 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_backpointer_index_valid [2022-11-20 12:05:02,275 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-11-20 12:05:02,275 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-11-20 12:05:02,275 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 12:05:02,796 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 12:05:02,799 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 12:05:04,824 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 12:05:04,853 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 12:05:04,854 INFO L300 CfgBuilder]: Removed 5 assume(true) statements. [2022-11-20 12:05:04,857 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:05:04 BoogieIcfgContainer [2022-11-20 12:05:04,859 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 12:05:04,864 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 12:05:04,864 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 12:05:04,869 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 12:05:04,869 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 12:04:57" (1/3) ... [2022-11-20 12:05:04,872 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4141d2d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:05:04, skipping insertion in model container [2022-11-20 12:05:04,872 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:05:01" (2/3) ... [2022-11-20 12:05:04,873 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4141d2d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:05:04, skipping insertion in model container [2022-11-20 12:05:04,873 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:05:04" (3/3) ... [2022-11-20 12:05:04,880 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_priority_queue_push_harness.i [2022-11-20 12:05:04,904 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 12:05:04,905 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-20 12:05:05,020 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 12:05:05,034 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5f8f4c83, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 12:05:05,035 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-20 12:05:05,045 INFO L276 IsEmpty]: Start isEmpty. Operand has 537 states, 307 states have (on average 1.247557003257329) internal successors, (383), 310 states have internal predecessors, (383), 196 states have call successors, (196), 32 states have call predecessors, (196), 32 states have return successors, (196), 196 states have call predecessors, (196), 196 states have call successors, (196) [2022-11-20 12:05:05,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-11-20 12:05:05,081 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:05:05,083 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:05:05,084 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:05:05,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:05:05,093 INFO L85 PathProgramCache]: Analyzing trace with hash -2064741935, now seen corresponding path program 1 times [2022-11-20 12:05:05,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:05:05,105 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737224917] [2022-11-20 12:05:05,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:05:05,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:05:05,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:05:06,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:05:06,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:05:06,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:05:06,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:05:06,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-20 12:05:06,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:05:06,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-20 12:05:06,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:05:06,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 12:05:06,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:05:06,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-20 12:05:06,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:05:06,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-20 12:05:06,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:05:06,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 12:05:06,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:05:06,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-20 12:05:06,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:05:06,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-20 12:05:06,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:05:06,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-20 12:05:06,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:05:06,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-20 12:05:06,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:05:06,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:05:06,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:05:06,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-20 12:05:06,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:05:06,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-20 12:05:06,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:05:06,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-11-20 12:05:06,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:05:06,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-11-20 12:05:06,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:05:06,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-11-20 12:05:06,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:05:06,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-11-20 12:05:06,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:05:06,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-11-20 12:05:06,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:05:06,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-11-20 12:05:06,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:05:06,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-11-20 12:05:06,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:05:06,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-11-20 12:05:06,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:05:06,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-11-20 12:05:06,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:05:06,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-11-20 12:05:06,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:05:06,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-11-20 12:05:06,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:05:06,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-11-20 12:05:06,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:05:06,719 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 351 trivial. 0 not checked. [2022-11-20 12:05:06,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:05:06,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737224917] [2022-11-20 12:05:06,724 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737224917] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:05:06,724 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:05:06,724 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:05:06,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020778953] [2022-11-20 12:05:06,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:05:06,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 12:05:06,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:05:06,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 12:05:06,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:05:06,791 INFO L87 Difference]: Start difference. First operand has 537 states, 307 states have (on average 1.247557003257329) internal successors, (383), 310 states have internal predecessors, (383), 196 states have call successors, (196), 32 states have call predecessors, (196), 32 states have return successors, (196), 196 states have call predecessors, (196), 196 states have call successors, (196) Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 2 states have internal predecessors, (53), 2 states have call successors, (27), 5 states have call predecessors, (27), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-11-20 12:05:09,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:05:09,733 INFO L93 Difference]: Finished difference Result 1219 states and 2024 transitions. [2022-11-20 12:05:09,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:05:09,736 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 2 states have internal predecessors, (53), 2 states have call successors, (27), 5 states have call predecessors, (27), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 167 [2022-11-20 12:05:09,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:05:09,772 INFO L225 Difference]: With dead ends: 1219 [2022-11-20 12:05:09,772 INFO L226 Difference]: Without dead ends: 688 [2022-11-20 12:05:09,789 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:05:09,793 INFO L413 NwaCegarLoop]: 684 mSDtfsCounter, 337 mSDsluCounter, 486 mSDsCounter, 0 mSdLazyCounter, 751 mSolverCounterSat, 556 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 398 SdHoareTripleChecker+Valid, 1170 SdHoareTripleChecker+Invalid, 1307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 556 IncrementalHoareTripleChecker+Valid, 751 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-20 12:05:09,801 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [398 Valid, 1170 Invalid, 1307 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [556 Valid, 751 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-11-20 12:05:09,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 688 states. [2022-11-20 12:05:09,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 688 to 530. [2022-11-20 12:05:09,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 530 states, 301 states have (on average 1.2292358803986712) internal successors, (370), 303 states have internal predecessors, (370), 196 states have call successors, (196), 32 states have call predecessors, (196), 31 states have return successors, (194), 194 states have call predecessors, (194), 194 states have call successors, (194) [2022-11-20 12:05:10,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 530 states to 530 states and 760 transitions. [2022-11-20 12:05:10,007 INFO L78 Accepts]: Start accepts. Automaton has 530 states and 760 transitions. Word has length 167 [2022-11-20 12:05:10,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:05:10,008 INFO L495 AbstractCegarLoop]: Abstraction has 530 states and 760 transitions. [2022-11-20 12:05:10,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 2 states have internal predecessors, (53), 2 states have call successors, (27), 5 states have call predecessors, (27), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-11-20 12:05:10,008 INFO L276 IsEmpty]: Start isEmpty. Operand 530 states and 760 transitions. [2022-11-20 12:05:10,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-11-20 12:05:10,023 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:05:10,024 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:05:10,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 12:05:10,024 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:05:10,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:05:10,025 INFO L85 PathProgramCache]: Analyzing trace with hash 374832211, now seen corresponding path program 1 times [2022-11-20 12:05:10,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:05:10,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660573852] [2022-11-20 12:05:10,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:05:10,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:05:10,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:05:10,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:05:10,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:05:10,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:05:10,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:05:10,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-20 12:05:10,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:05:10,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-20 12:05:10,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:05:10,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 12:05:10,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:05:10,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-20 12:05:10,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:05:10,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-20 12:05:10,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:05:10,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 12:05:10,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:05:11,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-20 12:05:11,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:05:11,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-20 12:05:11,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:05:11,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-20 12:05:11,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:05:11,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-20 12:05:11,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:05:11,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:05:11,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:05:11,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-20 12:05:11,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:05:11,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-20 12:05:11,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:05:11,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-11-20 12:05:11,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:05:11,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-11-20 12:05:11,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:05:11,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-11-20 12:05:11,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:05:11,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-11-20 12:05:11,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:05:11,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-11-20 12:05:11,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:05:11,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-11-20 12:05:11,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:05:11,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-11-20 12:05:11,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:05:11,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-11-20 12:05:11,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:05:11,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-11-20 12:05:11,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:05:11,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-11-20 12:05:11,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:05:11,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-11-20 12:05:11,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:05:11,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-11-20 12:05:11,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:05:11,391 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2022-11-20 12:05:11,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:05:11,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660573852] [2022-11-20 12:05:11,392 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660573852] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:05:11,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [349345806] [2022-11-20 12:05:11,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:05:11,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:05:11,393 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:05:11,397 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:05:11,423 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 12:05:12,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:05:12,156 INFO L263 TraceCheckSpWp]: Trace formula consists of 2434 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 12:05:12,172 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:05:12,312 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 128 proven. 0 refuted. 0 times theorem prover too weak. 223 trivial. 0 not checked. [2022-11-20 12:05:12,312 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:05:12,312 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [349345806] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:05:12,313 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:05:12,313 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2022-11-20 12:05:12,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069861319] [2022-11-20 12:05:12,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:05:12,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:05:12,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:05:12,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:05:12,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-11-20 12:05:12,317 INFO L87 Difference]: Start difference. First operand 530 states and 760 transitions. Second operand has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 3 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2022-11-20 12:05:12,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:05:12,932 INFO L93 Difference]: Finished difference Result 1029 states and 1488 transitions. [2022-11-20 12:05:12,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 12:05:12,933 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 3 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) Word has length 167 [2022-11-20 12:05:12,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:05:12,939 INFO L225 Difference]: With dead ends: 1029 [2022-11-20 12:05:12,939 INFO L226 Difference]: Without dead ends: 532 [2022-11-20 12:05:12,943 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2022-11-20 12:05:12,944 INFO L413 NwaCegarLoop]: 691 mSDtfsCounter, 786 mSDsluCounter, 1960 mSDsCounter, 0 mSdLazyCounter, 250 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 794 SdHoareTripleChecker+Valid, 2651 SdHoareTripleChecker+Invalid, 359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 12:05:12,945 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [794 Valid, 2651 Invalid, 359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 250 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-20 12:05:12,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 532 states. [2022-11-20 12:05:13,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 532 to 532. [2022-11-20 12:05:13,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 532 states, 302 states have (on average 1.228476821192053) internal successors, (371), 305 states have internal predecessors, (371), 196 states have call successors, (196), 32 states have call predecessors, (196), 32 states have return successors, (204), 194 states have call predecessors, (204), 194 states have call successors, (204) [2022-11-20 12:05:13,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 532 states to 532 states and 771 transitions. [2022-11-20 12:05:13,029 INFO L78 Accepts]: Start accepts. Automaton has 532 states and 771 transitions. Word has length 167 [2022-11-20 12:05:13,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:05:13,031 INFO L495 AbstractCegarLoop]: Abstraction has 532 states and 771 transitions. [2022-11-20 12:05:13,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 3 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2022-11-20 12:05:13,032 INFO L276 IsEmpty]: Start isEmpty. Operand 532 states and 771 transitions. [2022-11-20 12:05:13,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-11-20 12:05:13,038 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:05:13,039 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:05:13,057 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 12:05:13,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:05:13,251 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:05:13,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:05:13,252 INFO L85 PathProgramCache]: Analyzing trace with hash 1919571972, now seen corresponding path program 1 times [2022-11-20 12:05:13,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:05:13,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716749219] [2022-11-20 12:05:13,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:05:13,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:05:13,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:05:14,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:05:14,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:05:14,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:05:14,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:05:14,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-20 12:05:14,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:05:14,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-20 12:05:14,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:05:14,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 12:05:14,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:05:14,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-20 12:05:14,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:05:14,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-20 12:05:14,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:05:14,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 12:05:14,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:05:14,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-20 12:05:14,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:05:14,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-20 12:05:14,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:05:14,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:05:14,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:05:14,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-20 12:05:14,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:05:14,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-20 12:05:14,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:05:14,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:05:14,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:05:14,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-11-20 12:05:14,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:05:14,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-11-20 12:05:14,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:05:14,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-11-20 12:05:14,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:05:14,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-11-20 12:05:14,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:05:14,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-11-20 12:05:14,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:05:14,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-11-20 12:05:14,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:05:14,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-11-20 12:05:14,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:05:14,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-11-20 12:05:14,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:05:14,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-11-20 12:05:14,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:05:14,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-11-20 12:05:14,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:05:14,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-11-20 12:05:14,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:05:14,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-11-20 12:05:14,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:05:14,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-11-20 12:05:14,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:05:14,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-11-20 12:05:14,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:05:14,660 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 350 trivial. 0 not checked. [2022-11-20 12:05:14,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:05:14,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716749219] [2022-11-20 12:05:14,661 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716749219] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:05:14,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1282595397] [2022-11-20 12:05:14,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:05:14,662 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:05:14,662 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:05:14,664 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:05:14,690 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 12:05:15,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:05:15,459 INFO L263 TraceCheckSpWp]: Trace formula consists of 2484 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 12:05:15,466 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:05:15,720 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 140 proven. 0 refuted. 0 times theorem prover too weak. 223 trivial. 0 not checked. [2022-11-20 12:05:15,733 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:05:15,733 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1282595397] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:05:15,733 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:05:15,734 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 17 [2022-11-20 12:05:15,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697083898] [2022-11-20 12:05:15,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:05:15,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 12:05:15,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:05:15,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 12:05:15,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2022-11-20 12:05:15,737 INFO L87 Difference]: Start difference. First operand 532 states and 771 transitions. Second operand has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 4 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26) [2022-11-20 12:05:16,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:05:16,947 INFO L93 Difference]: Finished difference Result 1052 states and 1568 transitions. [2022-11-20 12:05:16,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 12:05:16,948 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 4 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26) Word has length 175 [2022-11-20 12:05:16,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:05:16,954 INFO L225 Difference]: With dead ends: 1052 [2022-11-20 12:05:16,954 INFO L226 Difference]: Without dead ends: 553 [2022-11-20 12:05:16,958 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 223 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=59, Invalid=403, Unknown=0, NotChecked=0, Total=462 [2022-11-20 12:05:16,959 INFO L413 NwaCegarLoop]: 659 mSDtfsCounter, 827 mSDsluCounter, 3106 mSDsCounter, 0 mSdLazyCounter, 652 mSolverCounterSat, 137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 887 SdHoareTripleChecker+Valid, 3765 SdHoareTripleChecker+Invalid, 789 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 652 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:05:16,959 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [887 Valid, 3765 Invalid, 789 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [137 Valid, 652 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-20 12:05:16,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 553 states. [2022-11-20 12:05:17,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 553 to 551. [2022-11-20 12:05:17,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 551 states, 318 states have (on average 1.2358490566037736) internal successors, (393), 321 states have internal predecessors, (393), 198 states have call successors, (198), 32 states have call predecessors, (198), 33 states have return successors, (238), 197 states have call predecessors, (238), 196 states have call successors, (238) [2022-11-20 12:05:17,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 551 states to 551 states and 829 transitions. [2022-11-20 12:05:17,032 INFO L78 Accepts]: Start accepts. Automaton has 551 states and 829 transitions. Word has length 175 [2022-11-20 12:05:17,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:05:17,033 INFO L495 AbstractCegarLoop]: Abstraction has 551 states and 829 transitions. [2022-11-20 12:05:17,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 4 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26) [2022-11-20 12:05:17,033 INFO L276 IsEmpty]: Start isEmpty. Operand 551 states and 829 transitions. [2022-11-20 12:05:17,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-11-20 12:05:17,037 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:05:17,037 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:05:17,049 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 12:05:17,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:05:17,249 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:05:17,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:05:17,250 INFO L85 PathProgramCache]: Analyzing trace with hash -1259751837, now seen corresponding path program 1 times [2022-11-20 12:05:17,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:05:17,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776645184] [2022-11-20 12:05:17,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:05:17,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:05:17,364 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:05:17,365 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1306617381] [2022-11-20 12:05:17,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:05:17,365 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:05:17,366 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:05:17,367 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:05:17,387 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 12:05:18,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:05:18,220 INFO L263 TraceCheckSpWp]: Trace formula consists of 2625 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 12:05:18,233 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:05:18,358 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 140 proven. 0 refuted. 0 times theorem prover too weak. 223 trivial. 0 not checked. [2022-11-20 12:05:18,358 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:05:18,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:05:18,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776645184] [2022-11-20 12:05:18,359 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:05:18,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1306617381] [2022-11-20 12:05:18,359 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1306617381] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:05:18,359 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:05:18,360 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 12:05:18,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695227009] [2022-11-20 12:05:18,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:05:18,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 12:05:18,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:05:18,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 12:05:18,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 12:05:18,363 INFO L87 Difference]: Start difference. First operand 551 states and 829 transitions. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 4 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (28), 4 states have call predecessors, (28), 4 states have call successors, (28) [2022-11-20 12:05:19,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:05:19,132 INFO L93 Difference]: Finished difference Result 1077 states and 1650 transitions. [2022-11-20 12:05:19,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 12:05:19,133 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 4 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (28), 4 states have call predecessors, (28), 4 states have call successors, (28) Word has length 190 [2022-11-20 12:05:19,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:05:19,139 INFO L225 Difference]: With dead ends: 1077 [2022-11-20 12:05:19,140 INFO L226 Difference]: Without dead ends: 559 [2022-11-20 12:05:19,146 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2022-11-20 12:05:19,151 INFO L413 NwaCegarLoop]: 685 mSDtfsCounter, 810 mSDsluCounter, 2596 mSDsCounter, 0 mSdLazyCounter, 402 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 818 SdHoareTripleChecker+Valid, 3281 SdHoareTripleChecker+Invalid, 513 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 402 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-20 12:05:19,155 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [818 Valid, 3281 Invalid, 513 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 402 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-20 12:05:19,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 559 states. [2022-11-20 12:05:19,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 559 to 551. [2022-11-20 12:05:19,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 551 states, 318 states have (on average 1.2358490566037736) internal successors, (393), 321 states have internal predecessors, (393), 198 states have call successors, (198), 32 states have call predecessors, (198), 33 states have return successors, (238), 197 states have call predecessors, (238), 196 states have call successors, (238) [2022-11-20 12:05:19,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 551 states to 551 states and 829 transitions. [2022-11-20 12:05:19,215 INFO L78 Accepts]: Start accepts. Automaton has 551 states and 829 transitions. Word has length 190 [2022-11-20 12:05:19,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:05:19,217 INFO L495 AbstractCegarLoop]: Abstraction has 551 states and 829 transitions. [2022-11-20 12:05:19,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 4 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (28), 4 states have call predecessors, (28), 4 states have call successors, (28) [2022-11-20 12:05:19,218 INFO L276 IsEmpty]: Start isEmpty. Operand 551 states and 829 transitions. [2022-11-20 12:05:19,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2022-11-20 12:05:19,223 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:05:19,223 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 5, 5, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:05:19,235 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 12:05:19,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:05:19,435 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:05:19,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:05:19,436 INFO L85 PathProgramCache]: Analyzing trace with hash 1496894689, now seen corresponding path program 1 times [2022-11-20 12:05:19,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:05:19,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424515349] [2022-11-20 12:05:19,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:05:19,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:05:19,536 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:05:19,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [344600289] [2022-11-20 12:05:19,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:05:19,537 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:05:19,537 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:05:19,538 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:05:19,579 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 12:05:20,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:05:20,519 INFO L263 TraceCheckSpWp]: Trace formula consists of 2697 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-20 12:05:20,526 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:05:20,697 INFO L134 CoverageAnalysis]: Checked inductivity of 379 backedges. 155 proven. 0 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked. [2022-11-20 12:05:20,697 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:05:20,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:05:20,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424515349] [2022-11-20 12:05:20,698 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:05:20,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [344600289] [2022-11-20 12:05:20,698 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [344600289] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:05:20,698 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:05:20,699 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-20 12:05:20,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094440264] [2022-11-20 12:05:20,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:05:20,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 12:05:20,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:05:20,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 12:05:20,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-20 12:05:20,701 INFO L87 Difference]: Start difference. First operand 551 states and 829 transitions. Second operand has 9 states, 9 states have (on average 10.0) internal successors, (90), 9 states have internal predecessors, (90), 5 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (29), 5 states have call predecessors, (29), 5 states have call successors, (29) [2022-11-20 12:05:22,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:05:22,054 INFO L93 Difference]: Finished difference Result 1087 states and 1657 transitions. [2022-11-20 12:05:22,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 12:05:22,055 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.0) internal successors, (90), 9 states have internal predecessors, (90), 5 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (29), 5 states have call predecessors, (29), 5 states have call successors, (29) Word has length 206 [2022-11-20 12:05:22,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:05:22,062 INFO L225 Difference]: With dead ends: 1087 [2022-11-20 12:05:22,062 INFO L226 Difference]: Without dead ends: 569 [2022-11-20 12:05:22,066 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2022-11-20 12:05:22,067 INFO L413 NwaCegarLoop]: 652 mSDtfsCounter, 860 mSDsluCounter, 3692 mSDsCounter, 0 mSdLazyCounter, 873 mSolverCounterSat, 142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 920 SdHoareTripleChecker+Valid, 4344 SdHoareTripleChecker+Invalid, 1015 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 873 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:05:22,067 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [920 Valid, 4344 Invalid, 1015 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [142 Valid, 873 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-20 12:05:22,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 569 states. [2022-11-20 12:05:22,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 569 to 551. [2022-11-20 12:05:22,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 551 states, 318 states have (on average 1.2358490566037736) internal successors, (393), 321 states have internal predecessors, (393), 198 states have call successors, (198), 32 states have call predecessors, (198), 33 states have return successors, (238), 197 states have call predecessors, (238), 196 states have call successors, (238) [2022-11-20 12:05:22,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 551 states to 551 states and 829 transitions. [2022-11-20 12:05:22,119 INFO L78 Accepts]: Start accepts. Automaton has 551 states and 829 transitions. Word has length 206 [2022-11-20 12:05:22,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:05:22,120 INFO L495 AbstractCegarLoop]: Abstraction has 551 states and 829 transitions. [2022-11-20 12:05:22,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.0) internal successors, (90), 9 states have internal predecessors, (90), 5 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (29), 5 states have call predecessors, (29), 5 states have call successors, (29) [2022-11-20 12:05:22,120 INFO L276 IsEmpty]: Start isEmpty. Operand 551 states and 829 transitions. [2022-11-20 12:05:22,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2022-11-20 12:05:22,124 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:05:22,125 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 5, 5, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:05:22,143 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-20 12:05:22,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:05:22,338 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:05:22,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:05:22,338 INFO L85 PathProgramCache]: Analyzing trace with hash 1731548032, now seen corresponding path program 2 times [2022-11-20 12:05:22,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:05:22,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892963236] [2022-11-20 12:05:22,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:05:22,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:05:22,454 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:05:22,454 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1715855335] [2022-11-20 12:05:22,454 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:05:22,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:05:22,455 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:05:22,456 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:05:22,479 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-20 12:05:23,352 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 12:05:23,353 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:05:23,365 INFO L263 TraceCheckSpWp]: Trace formula consists of 2838 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 12:05:23,374 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:05:23,483 INFO L134 CoverageAnalysis]: Checked inductivity of 394 backedges. 195 proven. 0 refuted. 0 times theorem prover too weak. 199 trivial. 0 not checked. [2022-11-20 12:05:23,483 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:05:23,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:05:23,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892963236] [2022-11-20 12:05:23,484 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:05:23,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1715855335] [2022-11-20 12:05:23,484 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1715855335] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:05:23,485 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:05:23,485 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 12:05:23,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672136380] [2022-11-20 12:05:23,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:05:23,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 12:05:23,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:05:23,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 12:05:23,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 12:05:23,488 INFO L87 Difference]: Start difference. First operand 551 states and 829 transitions. Second operand has 7 states, 6 states have (on average 15.0) internal successors, (90), 7 states have internal predecessors, (90), 4 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (29), 3 states have call predecessors, (29), 4 states have call successors, (29) [2022-11-20 12:05:24,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:05:24,142 INFO L93 Difference]: Finished difference Result 1063 states and 1610 transitions. [2022-11-20 12:05:24,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 12:05:24,143 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 15.0) internal successors, (90), 7 states have internal predecessors, (90), 4 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (29), 3 states have call predecessors, (29), 4 states have call successors, (29) Word has length 221 [2022-11-20 12:05:24,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:05:24,149 INFO L225 Difference]: With dead ends: 1063 [2022-11-20 12:05:24,149 INFO L226 Difference]: Without dead ends: 553 [2022-11-20 12:05:24,153 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 217 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2022-11-20 12:05:24,154 INFO L413 NwaCegarLoop]: 690 mSDtfsCounter, 838 mSDsluCounter, 2588 mSDsCounter, 0 mSdLazyCounter, 293 mSolverCounterSat, 139 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 846 SdHoareTripleChecker+Valid, 3278 SdHoareTripleChecker+Invalid, 432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 12:05:24,154 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [846 Valid, 3278 Invalid, 432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [139 Valid, 293 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-20 12:05:24,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 553 states. [2022-11-20 12:05:24,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 553 to 553. [2022-11-20 12:05:24,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 553 states, 319 states have (on average 1.2351097178683386) internal successors, (394), 323 states have internal predecessors, (394), 198 states have call successors, (198), 32 states have call predecessors, (198), 34 states have return successors, (246), 197 states have call predecessors, (246), 196 states have call successors, (246) [2022-11-20 12:05:24,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 553 states to 553 states and 838 transitions. [2022-11-20 12:05:24,206 INFO L78 Accepts]: Start accepts. Automaton has 553 states and 838 transitions. Word has length 221 [2022-11-20 12:05:24,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:05:24,207 INFO L495 AbstractCegarLoop]: Abstraction has 553 states and 838 transitions. [2022-11-20 12:05:24,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 15.0) internal successors, (90), 7 states have internal predecessors, (90), 4 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (29), 3 states have call predecessors, (29), 4 states have call successors, (29) [2022-11-20 12:05:24,208 INFO L276 IsEmpty]: Start isEmpty. Operand 553 states and 838 transitions. [2022-11-20 12:05:24,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2022-11-20 12:05:24,212 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:05:24,212 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 6, 6, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:05:24,231 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-20 12:05:24,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-20 12:05:24,426 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:05:24,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:05:24,427 INFO L85 PathProgramCache]: Analyzing trace with hash 704505135, now seen corresponding path program 1 times [2022-11-20 12:05:24,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:05:24,427 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578539896] [2022-11-20 12:05:24,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:05:24,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:05:24,521 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:05:24,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [191005126] [2022-11-20 12:05:24,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:05:24,522 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:05:24,523 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:05:24,524 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:05:24,557 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-20 12:05:25,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:05:25,389 INFO L263 TraceCheckSpWp]: Trace formula consists of 2888 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-20 12:05:25,399 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:05:25,603 INFO L134 CoverageAnalysis]: Checked inductivity of 418 backedges. 217 proven. 0 refuted. 0 times theorem prover too weak. 201 trivial. 0 not checked. [2022-11-20 12:05:25,604 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:05:25,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:05:25,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578539896] [2022-11-20 12:05:25,604 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:05:25,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [191005126] [2022-11-20 12:05:25,605 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [191005126] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:05:25,605 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:05:25,605 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-20 12:05:25,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088926020] [2022-11-20 12:05:25,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:05:25,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 12:05:25,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:05:25,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 12:05:25,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-20 12:05:25,608 INFO L87 Difference]: Start difference. First operand 553 states and 838 transitions. Second operand has 9 states, 8 states have (on average 12.0) internal successors, (96), 9 states have internal predecessors, (96), 5 states have call successors, (32), 2 states have call predecessors, (32), 4 states have return successors, (30), 4 states have call predecessors, (30), 5 states have call successors, (30) [2022-11-20 12:05:26,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:05:26,811 INFO L93 Difference]: Finished difference Result 1081 states and 1648 transitions. [2022-11-20 12:05:26,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 12:05:26,812 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 12.0) internal successors, (96), 9 states have internal predecessors, (96), 5 states have call successors, (32), 2 states have call predecessors, (32), 4 states have return successors, (30), 4 states have call predecessors, (30), 5 states have call successors, (30) Word has length 229 [2022-11-20 12:05:26,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:05:26,817 INFO L225 Difference]: With dead ends: 1081 [2022-11-20 12:05:26,818 INFO L226 Difference]: Without dead ends: 569 [2022-11-20 12:05:26,822 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 225 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2022-11-20 12:05:26,823 INFO L413 NwaCegarLoop]: 674 mSDtfsCounter, 849 mSDsluCounter, 3762 mSDsCounter, 0 mSdLazyCounter, 736 mSolverCounterSat, 169 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 909 SdHoareTripleChecker+Valid, 4436 SdHoareTripleChecker+Invalid, 905 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 169 IncrementalHoareTripleChecker+Valid, 736 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:05:26,823 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [909 Valid, 4436 Invalid, 905 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [169 Valid, 736 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-20 12:05:26,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 569 states. [2022-11-20 12:05:26,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 569 to 567. [2022-11-20 12:05:26,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 567 states, 332 states have (on average 1.2409638554216869) internal successors, (412), 335 states have internal predecessors, (412), 199 states have call successors, (199), 32 states have call predecessors, (199), 34 states have return successors, (247), 199 states have call predecessors, (247), 197 states have call successors, (247) [2022-11-20 12:05:26,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 567 states to 567 states and 858 transitions. [2022-11-20 12:05:26,875 INFO L78 Accepts]: Start accepts. Automaton has 567 states and 858 transitions. Word has length 229 [2022-11-20 12:05:26,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:05:26,876 INFO L495 AbstractCegarLoop]: Abstraction has 567 states and 858 transitions. [2022-11-20 12:05:26,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 12.0) internal successors, (96), 9 states have internal predecessors, (96), 5 states have call successors, (32), 2 states have call predecessors, (32), 4 states have return successors, (30), 4 states have call predecessors, (30), 5 states have call successors, (30) [2022-11-20 12:05:26,877 INFO L276 IsEmpty]: Start isEmpty. Operand 567 states and 858 transitions. [2022-11-20 12:05:26,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2022-11-20 12:05:26,882 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:05:26,882 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:05:26,901 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-20 12:05:27,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:05:27,096 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:05:27,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:05:27,097 INFO L85 PathProgramCache]: Analyzing trace with hash -1333093850, now seen corresponding path program 2 times [2022-11-20 12:05:27,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:05:27,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329639286] [2022-11-20 12:05:27,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:05:27,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:05:27,207 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:05:27,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1092835827] [2022-11-20 12:05:27,207 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:05:27,208 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:05:27,208 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:05:27,209 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:05:27,227 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-20 12:05:28,134 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 12:05:28,134 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:05:28,151 INFO L263 TraceCheckSpWp]: Trace formula consists of 3029 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-20 12:05:28,160 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:05:28,287 INFO L134 CoverageAnalysis]: Checked inductivity of 448 backedges. 211 proven. 0 refuted. 0 times theorem prover too weak. 237 trivial. 0 not checked. [2022-11-20 12:05:28,288 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:05:28,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:05:28,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329639286] [2022-11-20 12:05:28,288 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:05:28,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1092835827] [2022-11-20 12:05:28,289 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1092835827] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:05:28,289 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:05:28,289 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-20 12:05:28,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070044399] [2022-11-20 12:05:28,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:05:28,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 12:05:28,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:05:28,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 12:05:28,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:05:28,292 INFO L87 Difference]: Start difference. First operand 567 states and 858 transitions. Second operand has 8 states, 7 states have (on average 13.285714285714286) internal successors, (93), 8 states have internal predecessors, (93), 5 states have call successors, (32), 2 states have call predecessors, (32), 3 states have return successors, (30), 4 states have call predecessors, (30), 5 states have call successors, (30) [2022-11-20 12:05:29,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:05:29,151 INFO L93 Difference]: Finished difference Result 1101 states and 1688 transitions. [2022-11-20 12:05:29,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 12:05:29,152 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 13.285714285714286) internal successors, (93), 8 states have internal predecessors, (93), 5 states have call successors, (32), 2 states have call predecessors, (32), 3 states have return successors, (30), 4 states have call predecessors, (30), 5 states have call successors, (30) Word has length 244 [2022-11-20 12:05:29,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:05:29,162 INFO L225 Difference]: With dead ends: 1101 [2022-11-20 12:05:29,162 INFO L226 Difference]: Without dead ends: 575 [2022-11-20 12:05:29,169 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 240 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2022-11-20 12:05:29,171 INFO L413 NwaCegarLoop]: 684 mSDtfsCounter, 862 mSDsluCounter, 3215 mSDsCounter, 0 mSdLazyCounter, 451 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 870 SdHoareTripleChecker+Valid, 3899 SdHoareTripleChecker+Invalid, 592 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 451 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-20 12:05:29,172 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [870 Valid, 3899 Invalid, 592 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 451 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-20 12:05:29,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2022-11-20 12:05:29,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 567. [2022-11-20 12:05:29,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 567 states, 332 states have (on average 1.2409638554216869) internal successors, (412), 335 states have internal predecessors, (412), 199 states have call successors, (199), 32 states have call predecessors, (199), 34 states have return successors, (247), 199 states have call predecessors, (247), 197 states have call successors, (247) [2022-11-20 12:05:29,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 567 states to 567 states and 858 transitions. [2022-11-20 12:05:29,224 INFO L78 Accepts]: Start accepts. Automaton has 567 states and 858 transitions. Word has length 244 [2022-11-20 12:05:29,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:05:29,224 INFO L495 AbstractCegarLoop]: Abstraction has 567 states and 858 transitions. [2022-11-20 12:05:29,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 13.285714285714286) internal successors, (93), 8 states have internal predecessors, (93), 5 states have call successors, (32), 2 states have call predecessors, (32), 3 states have return successors, (30), 4 states have call predecessors, (30), 5 states have call successors, (30) [2022-11-20 12:05:29,225 INFO L276 IsEmpty]: Start isEmpty. Operand 567 states and 858 transitions. [2022-11-20 12:05:29,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2022-11-20 12:05:29,231 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:05:29,231 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:05:29,250 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-11-20 12:05:29,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:05:29,450 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:05:29,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:05:29,451 INFO L85 PathProgramCache]: Analyzing trace with hash 2083883891, now seen corresponding path program 3 times [2022-11-20 12:05:29,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:05:29,451 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81033148] [2022-11-20 12:05:29,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:05:29,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:05:29,566 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:05:29,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [599864934] [2022-11-20 12:05:29,566 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 12:05:29,567 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:05:29,567 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:05:29,568 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:05:29,601 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-20 12:05:30,688 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-20 12:05:30,688 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:05:30,696 INFO L263 TraceCheckSpWp]: Trace formula consists of 1885 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-20 12:05:30,709 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:05:30,794 INFO L134 CoverageAnalysis]: Checked inductivity of 529 backedges. 70 proven. 0 refuted. 0 times theorem prover too weak. 459 trivial. 0 not checked. [2022-11-20 12:05:30,794 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:05:30,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:05:30,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81033148] [2022-11-20 12:05:30,795 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:05:30,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [599864934] [2022-11-20 12:05:30,795 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [599864934] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:05:30,795 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:05:30,796 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 12:05:30,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126050838] [2022-11-20 12:05:30,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:05:30,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:05:30,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:05:30,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:05:30,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:05:30,798 INFO L87 Difference]: Start difference. First operand 567 states and 858 transitions. Second operand has 6 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 3 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) [2022-11-20 12:05:31,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:05:31,359 INFO L93 Difference]: Finished difference Result 1076 states and 1642 transitions. [2022-11-20 12:05:31,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 12:05:31,360 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 3 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) Word has length 275 [2022-11-20 12:05:31,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:05:31,366 INFO L225 Difference]: With dead ends: 1076 [2022-11-20 12:05:31,366 INFO L226 Difference]: Without dead ends: 567 [2022-11-20 12:05:31,379 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 270 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 12:05:31,382 INFO L413 NwaCegarLoop]: 715 mSDtfsCounter, 2 mSDsluCounter, 2732 mSDsCounter, 0 mSdLazyCounter, 347 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 3447 SdHoareTripleChecker+Invalid, 347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 347 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 12:05:31,383 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 3447 Invalid, 347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 347 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-20 12:05:31,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 567 states. [2022-11-20 12:05:31,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 567 to 567. [2022-11-20 12:05:31,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 567 states, 332 states have (on average 1.2409638554216869) internal successors, (412), 335 states have internal predecessors, (412), 199 states have call successors, (199), 32 states have call predecessors, (199), 34 states have return successors, (246), 199 states have call predecessors, (246), 197 states have call successors, (246) [2022-11-20 12:05:31,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 567 states to 567 states and 857 transitions. [2022-11-20 12:05:31,493 INFO L78 Accepts]: Start accepts. Automaton has 567 states and 857 transitions. Word has length 275 [2022-11-20 12:05:31,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:05:31,494 INFO L495 AbstractCegarLoop]: Abstraction has 567 states and 857 transitions. [2022-11-20 12:05:31,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 3 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) [2022-11-20 12:05:31,495 INFO L276 IsEmpty]: Start isEmpty. Operand 567 states and 857 transitions. [2022-11-20 12:05:31,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2022-11-20 12:05:31,501 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:05:31,501 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 7, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:05:31,518 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-20 12:05:31,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:05:31,713 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:05:31,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:05:31,713 INFO L85 PathProgramCache]: Analyzing trace with hash 638478680, now seen corresponding path program 4 times [2022-11-20 12:05:31,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:05:31,714 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617771417] [2022-11-20 12:05:31,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:05:31,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:05:31,834 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:05:31,834 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1922422101] [2022-11-20 12:05:31,835 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-20 12:05:31,835 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:05:31,835 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:05:31,836 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:05:31,855 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-20 12:05:32,426 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-20 12:05:32,426 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:05:32,432 INFO L263 TraceCheckSpWp]: Trace formula consists of 1058 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 12:05:32,441 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:05:32,526 INFO L134 CoverageAnalysis]: Checked inductivity of 589 backedges. 262 proven. 0 refuted. 0 times theorem prover too weak. 327 trivial. 0 not checked. [2022-11-20 12:05:32,526 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:05:32,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:05:32,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617771417] [2022-11-20 12:05:32,527 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:05:32,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1922422101] [2022-11-20 12:05:32,527 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1922422101] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:05:32,527 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:05:32,528 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-20 12:05:32,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970356848] [2022-11-20 12:05:32,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:05:32,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 12:05:32,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:05:32,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 12:05:32,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:05:32,532 INFO L87 Difference]: Start difference. First operand 567 states and 857 transitions. Second operand has 8 states, 7 states have (on average 14.571428571428571) internal successors, (102), 8 states have internal predecessors, (102), 4 states have call successors, (33), 2 states have call predecessors, (33), 4 states have return successors, (31), 3 states have call predecessors, (31), 4 states have call successors, (31) [2022-11-20 12:05:33,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:05:33,500 INFO L93 Difference]: Finished difference Result 1220 states and 1863 transitions. [2022-11-20 12:05:33,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 12:05:33,501 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 14.571428571428571) internal successors, (102), 8 states have internal predecessors, (102), 4 states have call successors, (33), 2 states have call predecessors, (33), 4 states have return successors, (31), 3 states have call predecessors, (31), 4 states have call successors, (31) Word has length 290 [2022-11-20 12:05:33,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:05:33,519 INFO L225 Difference]: With dead ends: 1220 [2022-11-20 12:05:33,519 INFO L226 Difference]: Without dead ends: 706 [2022-11-20 12:05:33,524 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 285 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-11-20 12:05:33,525 INFO L413 NwaCegarLoop]: 807 mSDtfsCounter, 159 mSDsluCounter, 4457 mSDsCounter, 0 mSdLazyCounter, 687 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 5264 SdHoareTripleChecker+Invalid, 761 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 687 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-20 12:05:33,526 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 5264 Invalid, 761 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 687 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-20 12:05:33,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 706 states. [2022-11-20 12:05:33,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 706 to 664. [2022-11-20 12:05:33,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 664 states, 398 states have (on average 1.2663316582914572) internal successors, (504), 403 states have internal predecessors, (504), 228 states have call successors, (228), 33 states have call predecessors, (228), 36 states have return successors, (289), 227 states have call predecessors, (289), 226 states have call successors, (289) [2022-11-20 12:05:33,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 664 states to 664 states and 1021 transitions. [2022-11-20 12:05:33,596 INFO L78 Accepts]: Start accepts. Automaton has 664 states and 1021 transitions. Word has length 290 [2022-11-20 12:05:33,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:05:33,597 INFO L495 AbstractCegarLoop]: Abstraction has 664 states and 1021 transitions. [2022-11-20 12:05:33,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 14.571428571428571) internal successors, (102), 8 states have internal predecessors, (102), 4 states have call successors, (33), 2 states have call predecessors, (33), 4 states have return successors, (31), 3 states have call predecessors, (31), 4 states have call successors, (31) [2022-11-20 12:05:33,598 INFO L276 IsEmpty]: Start isEmpty. Operand 664 states and 1021 transitions. [2022-11-20 12:05:33,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2022-11-20 12:05:33,604 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:05:33,604 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 7, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:05:33,619 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-20 12:05:33,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-20 12:05:33,814 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:05:33,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:05:33,815 INFO L85 PathProgramCache]: Analyzing trace with hash -1883250610, now seen corresponding path program 5 times [2022-11-20 12:05:33,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:05:33,815 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762144300] [2022-11-20 12:05:33,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:05:33,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:05:33,964 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:05:33,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1736329155] [2022-11-20 12:05:33,964 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-20 12:05:33,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:05:33,965 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:05:33,966 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:05:34,047 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-20 12:05:34,538 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 12:05:34,538 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:05:34,542 INFO L263 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-20 12:05:34,557 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:05:34,641 INFO L134 CoverageAnalysis]: Checked inductivity of 589 backedges. 298 proven. 0 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2022-11-20 12:05:34,641 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:05:34,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:05:34,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762144300] [2022-11-20 12:05:34,642 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:05:34,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1736329155] [2022-11-20 12:05:34,643 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1736329155] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:05:34,643 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:05:34,643 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 12:05:34,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367352218] [2022-11-20 12:05:34,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:05:34,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:05:34,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:05:34,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:05:34,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:05:34,646 INFO L87 Difference]: Start difference. First operand 664 states and 1021 transitions. Second operand has 6 states, 6 states have (on average 19.0) internal successors, (114), 5 states have internal predecessors, (114), 2 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (33), 3 states have call predecessors, (33), 2 states have call successors, (33) [2022-11-20 12:05:34,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:05:34,767 INFO L93 Difference]: Finished difference Result 1297 states and 1999 transitions. [2022-11-20 12:05:34,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 12:05:34,768 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 19.0) internal successors, (114), 5 states have internal predecessors, (114), 2 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (33), 3 states have call predecessors, (33), 2 states have call successors, (33) Word has length 290 [2022-11-20 12:05:34,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:05:34,776 INFO L225 Difference]: With dead ends: 1297 [2022-11-20 12:05:34,776 INFO L226 Difference]: Without dead ends: 671 [2022-11-20 12:05:34,782 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 285 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:05:34,783 INFO L413 NwaCegarLoop]: 758 mSDtfsCounter, 1 mSDsluCounter, 3019 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 3777 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:05:34,784 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 3777 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 12:05:34,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 671 states. [2022-11-20 12:05:34,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 671 to 669. [2022-11-20 12:05:34,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 669 states, 402 states have (on average 1.263681592039801) internal successors, (508), 407 states have internal predecessors, (508), 228 states have call successors, (228), 33 states have call predecessors, (228), 37 states have return successors, (291), 228 states have call predecessors, (291), 226 states have call successors, (291) [2022-11-20 12:05:34,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 669 states to 669 states and 1027 transitions. [2022-11-20 12:05:34,845 INFO L78 Accepts]: Start accepts. Automaton has 669 states and 1027 transitions. Word has length 290 [2022-11-20 12:05:34,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:05:34,846 INFO L495 AbstractCegarLoop]: Abstraction has 669 states and 1027 transitions. [2022-11-20 12:05:34,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.0) internal successors, (114), 5 states have internal predecessors, (114), 2 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (33), 3 states have call predecessors, (33), 2 states have call successors, (33) [2022-11-20 12:05:34,847 INFO L276 IsEmpty]: Start isEmpty. Operand 669 states and 1027 transitions. [2022-11-20 12:05:34,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2022-11-20 12:05:34,849 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:05:34,850 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 8, 8, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:05:34,864 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-20 12:05:35,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-20 12:05:35,058 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:05:35,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:05:35,059 INFO L85 PathProgramCache]: Analyzing trace with hash -1749099963, now seen corresponding path program 1 times [2022-11-20 12:05:35,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:05:35,059 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985272825] [2022-11-20 12:05:35,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:05:35,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:05:35,175 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:05:35,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1655355633] [2022-11-20 12:05:35,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:05:35,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:05:35,176 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:05:35,177 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:05:35,195 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-20 12:05:36,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:05:36,223 INFO L263 TraceCheckSpWp]: Trace formula consists of 3430 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-20 12:05:36,237 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:05:36,427 INFO L134 CoverageAnalysis]: Checked inductivity of 625 backedges. 358 proven. 0 refuted. 0 times theorem prover too weak. 267 trivial. 0 not checked. [2022-11-20 12:05:36,427 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:05:36,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:05:36,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985272825] [2022-11-20 12:05:36,428 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:05:36,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1655355633] [2022-11-20 12:05:36,428 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1655355633] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:05:36,428 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:05:36,429 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-20 12:05:36,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110614624] [2022-11-20 12:05:36,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:05:36,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 12:05:36,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:05:36,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 12:05:36,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-20 12:05:36,431 INFO L87 Difference]: Start difference. First operand 669 states and 1027 transitions. Second operand has 10 states, 9 states have (on average 13.555555555555555) internal successors, (122), 10 states have internal predecessors, (122), 6 states have call successors, (36), 2 states have call predecessors, (36), 4 states have return successors, (34), 5 states have call predecessors, (34), 6 states have call successors, (34) [2022-11-20 12:05:37,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:05:37,856 INFO L93 Difference]: Finished difference Result 1313 states and 2020 transitions. [2022-11-20 12:05:37,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 12:05:37,857 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 13.555555555555555) internal successors, (122), 10 states have internal predecessors, (122), 6 states have call successors, (36), 2 states have call predecessors, (36), 4 states have return successors, (34), 5 states have call predecessors, (34), 6 states have call successors, (34) Word has length 298 [2022-11-20 12:05:37,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:05:37,870 INFO L225 Difference]: With dead ends: 1313 [2022-11-20 12:05:37,870 INFO L226 Difference]: Without dead ends: 687 [2022-11-20 12:05:37,875 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 294 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2022-11-20 12:05:37,876 INFO L413 NwaCegarLoop]: 651 mSDtfsCounter, 912 mSDsluCounter, 4272 mSDsCounter, 0 mSdLazyCounter, 959 mSolverCounterSat, 175 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 971 SdHoareTripleChecker+Valid, 4923 SdHoareTripleChecker+Invalid, 1134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 175 IncrementalHoareTripleChecker+Valid, 959 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:05:37,877 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [971 Valid, 4923 Invalid, 1134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [175 Valid, 959 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-20 12:05:37,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 687 states. [2022-11-20 12:05:37,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 687 to 636. [2022-11-20 12:05:37,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 636 states, 373 states have (on average 1.2546916890080428) internal successors, (468), 379 states have internal predecessors, (468), 225 states have call successors, (225), 33 states have call predecessors, (225), 36 states have return successors, (277), 223 states have call predecessors, (277), 223 states have call successors, (277) [2022-11-20 12:05:37,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 636 states to 636 states and 970 transitions. [2022-11-20 12:05:37,935 INFO L78 Accepts]: Start accepts. Automaton has 636 states and 970 transitions. Word has length 298 [2022-11-20 12:05:37,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:05:37,936 INFO L495 AbstractCegarLoop]: Abstraction has 636 states and 970 transitions. [2022-11-20 12:05:37,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 13.555555555555555) internal successors, (122), 10 states have internal predecessors, (122), 6 states have call successors, (36), 2 states have call predecessors, (36), 4 states have return successors, (34), 5 states have call predecessors, (34), 6 states have call successors, (34) [2022-11-20 12:05:37,936 INFO L276 IsEmpty]: Start isEmpty. Operand 636 states and 970 transitions. [2022-11-20 12:05:37,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2022-11-20 12:05:37,939 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:05:37,939 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:05:37,960 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-20 12:05:38,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-20 12:05:38,154 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:05:38,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:05:38,155 INFO L85 PathProgramCache]: Analyzing trace with hash -766814388, now seen corresponding path program 2 times [2022-11-20 12:05:38,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:05:38,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507332592] [2022-11-20 12:05:38,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:05:38,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:05:38,263 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:05:38,263 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [782851892] [2022-11-20 12:05:38,263 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:05:38,264 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:05:38,265 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:05:38,266 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:05:38,300 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-20 12:05:39,512 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 12:05:39,512 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:05:39,527 INFO L263 TraceCheckSpWp]: Trace formula consists of 3571 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-20 12:05:39,536 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:05:39,682 INFO L134 CoverageAnalysis]: Checked inductivity of 700 backedges. 317 proven. 0 refuted. 0 times theorem prover too weak. 383 trivial. 0 not checked. [2022-11-20 12:05:39,683 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:05:39,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:05:39,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507332592] [2022-11-20 12:05:39,683 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:05:39,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [782851892] [2022-11-20 12:05:39,690 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [782851892] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:05:39,691 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:05:39,691 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-20 12:05:39,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771883704] [2022-11-20 12:05:39,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:05:39,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 12:05:39,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:05:39,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 12:05:39,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-20 12:05:39,694 INFO L87 Difference]: Start difference. First operand 636 states and 970 transitions. Second operand has 9 states, 8 states have (on average 12.75) internal successors, (102), 9 states have internal predecessors, (102), 6 states have call successors, (34), 2 states have call predecessors, (34), 3 states have return successors, (32), 5 states have call predecessors, (32), 6 states have call successors, (32) [2022-11-20 12:05:40,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:05:40,637 INFO L93 Difference]: Finished difference Result 1148 states and 1748 transitions. [2022-11-20 12:05:40,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 12:05:40,638 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 12.75) internal successors, (102), 9 states have internal predecessors, (102), 6 states have call successors, (34), 2 states have call predecessors, (34), 3 states have return successors, (32), 5 states have call predecessors, (32), 6 states have call successors, (32) Word has length 313 [2022-11-20 12:05:40,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:05:40,644 INFO L225 Difference]: With dead ends: 1148 [2022-11-20 12:05:40,644 INFO L226 Difference]: Without dead ends: 561 [2022-11-20 12:05:40,648 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 322 GetRequests, 308 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2022-11-20 12:05:40,650 INFO L413 NwaCegarLoop]: 678 mSDtfsCounter, 911 mSDsluCounter, 3769 mSDsCounter, 0 mSdLazyCounter, 569 mSolverCounterSat, 159 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 919 SdHoareTripleChecker+Valid, 4447 SdHoareTripleChecker+Invalid, 728 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 159 IncrementalHoareTripleChecker+Valid, 569 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-20 12:05:40,650 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [919 Valid, 4447 Invalid, 728 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [159 Valid, 569 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-20 12:05:40,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 561 states. [2022-11-20 12:05:40,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 561 to 559. [2022-11-20 12:05:40,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 559 states, 324 states have (on average 1.2314814814814814) internal successors, (399), 328 states have internal predecessors, (399), 198 states have call successors, (198), 32 states have call predecessors, (198), 35 states have return successors, (241), 198 states have call predecessors, (241), 196 states have call successors, (241) [2022-11-20 12:05:40,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 559 states to 559 states and 838 transitions. [2022-11-20 12:05:40,696 INFO L78 Accepts]: Start accepts. Automaton has 559 states and 838 transitions. Word has length 313 [2022-11-20 12:05:40,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:05:40,698 INFO L495 AbstractCegarLoop]: Abstraction has 559 states and 838 transitions. [2022-11-20 12:05:40,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 12.75) internal successors, (102), 9 states have internal predecessors, (102), 6 states have call successors, (34), 2 states have call predecessors, (34), 3 states have return successors, (32), 5 states have call predecessors, (32), 6 states have call successors, (32) [2022-11-20 12:05:40,698 INFO L276 IsEmpty]: Start isEmpty. Operand 559 states and 838 transitions. [2022-11-20 12:05:40,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2022-11-20 12:05:40,701 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:05:40,702 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 9, 9, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:05:40,726 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-20 12:05:40,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:05:40,923 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:05:40,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:05:40,923 INFO L85 PathProgramCache]: Analyzing trace with hash -1410340921, now seen corresponding path program 1 times [2022-11-20 12:05:40,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:05:40,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373950364] [2022-11-20 12:05:40,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:05:40,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:05:41,037 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:05:41,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [555517482] [2022-11-20 12:05:41,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:05:41,038 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:05:41,038 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:05:41,040 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:05:41,063 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-20 12:05:42,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:05:42,211 INFO L263 TraceCheckSpWp]: Trace formula consists of 3784 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-20 12:05:42,220 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:05:42,421 INFO L134 CoverageAnalysis]: Checked inductivity of 846 backedges. 308 proven. 0 refuted. 0 times theorem prover too weak. 538 trivial. 0 not checked. [2022-11-20 12:05:42,422 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:05:42,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:05:42,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373950364] [2022-11-20 12:05:42,423 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:05:42,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [555517482] [2022-11-20 12:05:42,423 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [555517482] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:05:42,423 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:05:42,423 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-20 12:05:42,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615525204] [2022-11-20 12:05:42,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:05:42,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 12:05:42,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:05:42,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 12:05:42,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-20 12:05:42,426 INFO L87 Difference]: Start difference. First operand 559 states and 838 transitions. Second operand has 9 states, 8 states have (on average 12.375) internal successors, (99), 9 states have internal predecessors, (99), 6 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (31), 5 states have call predecessors, (31), 6 states have call successors, (31) [2022-11-20 12:05:43,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:05:43,461 INFO L93 Difference]: Finished difference Result 1063 states and 1593 transitions. [2022-11-20 12:05:43,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 12:05:43,463 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 12.375) internal successors, (99), 9 states have internal predecessors, (99), 6 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (31), 5 states have call predecessors, (31), 6 states have call successors, (31) Word has length 344 [2022-11-20 12:05:43,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:05:43,469 INFO L225 Difference]: With dead ends: 1063 [2022-11-20 12:05:43,469 INFO L226 Difference]: Without dead ends: 559 [2022-11-20 12:05:43,473 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 351 GetRequests, 338 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2022-11-20 12:05:43,474 INFO L413 NwaCegarLoop]: 657 mSDtfsCounter, 904 mSDsluCounter, 3577 mSDsCounter, 0 mSdLazyCounter, 711 mSolverCounterSat, 172 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 959 SdHoareTripleChecker+Valid, 4234 SdHoareTripleChecker+Invalid, 883 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 172 IncrementalHoareTripleChecker+Valid, 711 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-20 12:05:43,474 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [959 Valid, 4234 Invalid, 883 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [172 Valid, 711 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-20 12:05:43,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 559 states. [2022-11-20 12:05:43,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 559 to 559. [2022-11-20 12:05:43,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 559 states, 324 states have (on average 1.2314814814814814) internal successors, (399), 328 states have internal predecessors, (399), 198 states have call successors, (198), 32 states have call predecessors, (198), 35 states have return successors, (238), 198 states have call predecessors, (238), 196 states have call successors, (238) [2022-11-20 12:05:43,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 559 states to 559 states and 835 transitions. [2022-11-20 12:05:43,520 INFO L78 Accepts]: Start accepts. Automaton has 559 states and 835 transitions. Word has length 344 [2022-11-20 12:05:43,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:05:43,521 INFO L495 AbstractCegarLoop]: Abstraction has 559 states and 835 transitions. [2022-11-20 12:05:43,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 12.375) internal successors, (99), 9 states have internal predecessors, (99), 6 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (31), 5 states have call predecessors, (31), 6 states have call successors, (31) [2022-11-20 12:05:43,522 INFO L276 IsEmpty]: Start isEmpty. Operand 559 states and 835 transitions. [2022-11-20 12:05:43,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2022-11-20 12:05:43,525 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:05:43,525 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 9, 9, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:05:43,542 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-20 12:05:43,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-20 12:05:43,741 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:05:43,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:05:43,741 INFO L85 PathProgramCache]: Analyzing trace with hash -935689784, now seen corresponding path program 2 times [2022-11-20 12:05:43,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:05:43,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353974774] [2022-11-20 12:05:43,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:05:43,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:05:43,883 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:05:43,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1516032331] [2022-11-20 12:05:43,884 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:05:43,884 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:05:43,884 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:05:43,885 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:05:43,920 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-20 12:05:45,277 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 12:05:45,277 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:05:45,294 INFO L263 TraceCheckSpWp]: Trace formula consists of 3643 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-20 12:05:45,304 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:05:45,493 INFO L134 CoverageAnalysis]: Checked inductivity of 756 backedges. 410 proven. 3 refuted. 0 times theorem prover too weak. 343 trivial. 0 not checked. [2022-11-20 12:05:45,493 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:05:46,157 INFO L134 CoverageAnalysis]: Checked inductivity of 756 backedges. 50 proven. 12 refuted. 0 times theorem prover too weak. 694 trivial. 0 not checked. [2022-11-20 12:05:46,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:05:46,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353974774] [2022-11-20 12:05:46,158 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:05:46,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1516032331] [2022-11-20 12:05:46,158 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1516032331] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:05:46,158 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:05:46,159 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2022-11-20 12:05:46,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228567431] [2022-11-20 12:05:46,159 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:05:46,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-20 12:05:46,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:05:46,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-20 12:05:46,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2022-11-20 12:05:46,162 INFO L87 Difference]: Start difference. First operand 559 states and 835 transitions. Second operand has 16 states, 14 states have (on average 9.714285714285714) internal successors, (136), 16 states have internal predecessors, (136), 11 states have call successors, (58), 2 states have call predecessors, (58), 4 states have return successors, (56), 7 states have call predecessors, (56), 11 states have call successors, (56) [2022-11-20 12:05:48,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:05:48,304 INFO L93 Difference]: Finished difference Result 1088 states and 1633 transitions. [2022-11-20 12:05:48,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 12:05:48,305 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 9.714285714285714) internal successors, (136), 16 states have internal predecessors, (136), 11 states have call successors, (58), 2 states have call predecessors, (58), 4 states have return successors, (56), 7 states have call predecessors, (56), 11 states have call successors, (56) Word has length 329 [2022-11-20 12:05:48,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:05:48,309 INFO L225 Difference]: With dead ends: 1088 [2022-11-20 12:05:48,309 INFO L226 Difference]: Without dead ends: 578 [2022-11-20 12:05:48,313 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 666 GetRequests, 643 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=92, Invalid=414, Unknown=0, NotChecked=0, Total=506 [2022-11-20 12:05:48,314 INFO L413 NwaCegarLoop]: 652 mSDtfsCounter, 1469 mSDsluCounter, 5413 mSDsCounter, 0 mSdLazyCounter, 1185 mSolverCounterSat, 699 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1528 SdHoareTripleChecker+Valid, 6065 SdHoareTripleChecker+Invalid, 1884 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 699 IncrementalHoareTripleChecker+Valid, 1185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-20 12:05:48,314 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1528 Valid, 6065 Invalid, 1884 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [699 Valid, 1185 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-20 12:05:48,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2022-11-20 12:05:48,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 572. [2022-11-20 12:05:48,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 572 states, 336 states have (on average 1.2380952380952381) internal successors, (416), 339 states have internal predecessors, (416), 199 states have call successors, (199), 32 states have call predecessors, (199), 35 states have return successors, (239), 200 states have call predecessors, (239), 197 states have call successors, (239) [2022-11-20 12:05:48,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 572 states to 572 states and 854 transitions. [2022-11-20 12:05:48,363 INFO L78 Accepts]: Start accepts. Automaton has 572 states and 854 transitions. Word has length 329 [2022-11-20 12:05:48,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:05:48,364 INFO L495 AbstractCegarLoop]: Abstraction has 572 states and 854 transitions. [2022-11-20 12:05:48,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 9.714285714285714) internal successors, (136), 16 states have internal predecessors, (136), 11 states have call successors, (58), 2 states have call predecessors, (58), 4 states have return successors, (56), 7 states have call predecessors, (56), 11 states have call successors, (56) [2022-11-20 12:05:48,364 INFO L276 IsEmpty]: Start isEmpty. Operand 572 states and 854 transitions. [2022-11-20 12:05:48,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2022-11-20 12:05:48,367 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:05:48,367 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 9, 9, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:05:48,389 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-20 12:05:48,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:05:48,589 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:05:48,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:05:48,590 INFO L85 PathProgramCache]: Analyzing trace with hash 1012022503, now seen corresponding path program 3 times [2022-11-20 12:05:48,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:05:48,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471487667] [2022-11-20 12:05:48,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:05:48,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:05:48,716 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:05:48,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1173784622] [2022-11-20 12:05:48,717 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 12:05:48,717 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:05:48,717 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:05:48,718 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:05:48,725 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-20 12:05:49,743 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-20 12:05:49,743 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:05:49,753 INFO L263 TraceCheckSpWp]: Trace formula consists of 2026 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-20 12:05:49,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:05:49,880 INFO L134 CoverageAnalysis]: Checked inductivity of 846 backedges. 78 proven. 2 refuted. 0 times theorem prover too weak. 766 trivial. 0 not checked. [2022-11-20 12:05:49,881 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:05:50,447 INFO L134 CoverageAnalysis]: Checked inductivity of 846 backedges. 78 proven. 3 refuted. 0 times theorem prover too weak. 765 trivial. 0 not checked. [2022-11-20 12:05:50,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:05:50,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471487667] [2022-11-20 12:05:50,448 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:05:50,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1173784622] [2022-11-20 12:05:50,448 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1173784622] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:05:50,448 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:05:50,449 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 8 [2022-11-20 12:05:50,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034860725] [2022-11-20 12:05:50,449 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:05:50,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 12:05:50,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:05:50,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 12:05:50,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:05:50,451 INFO L87 Difference]: Start difference. First operand 572 states and 854 transitions. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 4 states have call successors, (32), 2 states have call predecessors, (32), 3 states have return successors, (30), 4 states have call predecessors, (30), 3 states have call successors, (30) [2022-11-20 12:05:51,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:05:51,215 INFO L93 Difference]: Finished difference Result 1085 states and 1635 transitions. [2022-11-20 12:05:51,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 12:05:51,216 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 4 states have call successors, (32), 2 states have call predecessors, (32), 3 states have return successors, (30), 4 states have call predecessors, (30), 3 states have call successors, (30) Word has length 344 [2022-11-20 12:05:51,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:05:51,222 INFO L225 Difference]: With dead ends: 1085 [2022-11-20 12:05:51,222 INFO L226 Difference]: Without dead ends: 574 [2022-11-20 12:05:51,226 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 689 GetRequests, 681 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-11-20 12:05:51,227 INFO L413 NwaCegarLoop]: 722 mSDtfsCounter, 22 mSDsluCounter, 4131 mSDsCounter, 0 mSdLazyCounter, 590 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 4853 SdHoareTripleChecker+Invalid, 593 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 590 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-20 12:05:51,228 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 4853 Invalid, 593 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 590 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-20 12:05:51,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 574 states. [2022-11-20 12:05:51,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 574 to 574. [2022-11-20 12:05:51,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 574 states, 338 states have (on average 1.2366863905325445) internal successors, (418), 340 states have internal predecessors, (418), 199 states have call successors, (199), 33 states have call predecessors, (199), 35 states have return successors, (238), 200 states have call predecessors, (238), 197 states have call successors, (238) [2022-11-20 12:05:51,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 574 states to 574 states and 855 transitions. [2022-11-20 12:05:51,292 INFO L78 Accepts]: Start accepts. Automaton has 574 states and 855 transitions. Word has length 344 [2022-11-20 12:05:51,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:05:51,293 INFO L495 AbstractCegarLoop]: Abstraction has 574 states and 855 transitions. [2022-11-20 12:05:51,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 4 states have call successors, (32), 2 states have call predecessors, (32), 3 states have return successors, (30), 4 states have call predecessors, (30), 3 states have call successors, (30) [2022-11-20 12:05:51,294 INFO L276 IsEmpty]: Start isEmpty. Operand 574 states and 855 transitions. [2022-11-20 12:05:51,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2022-11-20 12:05:51,299 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:05:51,299 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:05:51,316 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-20 12:05:51,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-20 12:05:51,510 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:05:51,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:05:51,511 INFO L85 PathProgramCache]: Analyzing trace with hash -184208892, now seen corresponding path program 4 times [2022-11-20 12:05:51,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:05:51,511 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918511219] [2022-11-20 12:05:51,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:05:51,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:05:51,683 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:05:51,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [857753308] [2022-11-20 12:05:51,684 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-20 12:05:51,684 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:05:51,684 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:05:51,685 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:05:51,719 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-20 12:05:52,880 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-20 12:05:52,881 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:05:52,898 INFO L263 TraceCheckSpWp]: Trace formula consists of 3925 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-20 12:05:52,913 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:05:53,085 INFO L134 CoverageAnalysis]: Checked inductivity of 951 backedges. 518 proven. 0 refuted. 0 times theorem prover too weak. 433 trivial. 0 not checked. [2022-11-20 12:05:53,085 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:05:53,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:05:53,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918511219] [2022-11-20 12:05:53,089 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:05:53,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [857753308] [2022-11-20 12:05:53,089 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [857753308] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:05:53,089 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:05:53,090 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-20 12:05:53,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966444320] [2022-11-20 12:05:53,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:05:53,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 12:05:53,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:05:53,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 12:05:53,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-20 12:05:53,093 INFO L87 Difference]: Start difference. First operand 574 states and 855 transitions. Second operand has 10 states, 9 states have (on average 12.777777777777779) internal successors, (115), 10 states have internal predecessors, (115), 7 states have call successors, (35), 2 states have call predecessors, (35), 4 states have return successors, (33), 6 states have call predecessors, (33), 7 states have call successors, (33) [2022-11-20 12:05:54,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:05:54,041 INFO L93 Difference]: Finished difference Result 1117 states and 1668 transitions. [2022-11-20 12:05:54,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 12:05:54,042 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 12.777777777777779) internal successors, (115), 10 states have internal predecessors, (115), 7 states have call successors, (35), 2 states have call predecessors, (35), 4 states have return successors, (33), 6 states have call predecessors, (33), 7 states have call successors, (33) Word has length 359 [2022-11-20 12:05:54,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:05:54,048 INFO L225 Difference]: With dead ends: 1117 [2022-11-20 12:05:54,048 INFO L226 Difference]: Without dead ends: 592 [2022-11-20 12:05:54,052 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 353 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2022-11-20 12:05:54,053 INFO L413 NwaCegarLoop]: 692 mSDtfsCounter, 258 mSDsluCounter, 5043 mSDsCounter, 0 mSdLazyCounter, 852 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 259 SdHoareTripleChecker+Valid, 5735 SdHoareTripleChecker+Invalid, 960 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 852 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-20 12:05:54,053 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [259 Valid, 5735 Invalid, 960 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 852 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-20 12:05:54,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 592 states. [2022-11-20 12:05:54,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 592 to 558. [2022-11-20 12:05:54,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 558 states, 324 states have (on average 1.2314814814814814) internal successors, (399), 326 states have internal predecessors, (399), 198 states have call successors, (198), 33 states have call predecessors, (198), 34 states have return successors, (229), 198 states have call predecessors, (229), 196 states have call successors, (229) [2022-11-20 12:05:54,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 558 states to 558 states and 826 transitions. [2022-11-20 12:05:54,098 INFO L78 Accepts]: Start accepts. Automaton has 558 states and 826 transitions. Word has length 359 [2022-11-20 12:05:54,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:05:54,099 INFO L495 AbstractCegarLoop]: Abstraction has 558 states and 826 transitions. [2022-11-20 12:05:54,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 12.777777777777779) internal successors, (115), 10 states have internal predecessors, (115), 7 states have call successors, (35), 2 states have call predecessors, (35), 4 states have return successors, (33), 6 states have call predecessors, (33), 7 states have call successors, (33) [2022-11-20 12:05:54,099 INFO L276 IsEmpty]: Start isEmpty. Operand 558 states and 826 transitions. [2022-11-20 12:05:54,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2022-11-20 12:05:54,102 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:05:54,103 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:05:54,117 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-11-20 12:05:54,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-20 12:05:54,316 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:05:54,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:05:54,316 INFO L85 PathProgramCache]: Analyzing trace with hash 1723235649, now seen corresponding path program 1 times [2022-11-20 12:05:54,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:05:54,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628810587] [2022-11-20 12:05:54,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:05:54,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:05:54,423 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:05:54,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [201976076] [2022-11-20 12:05:54,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:05:54,424 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:05:54,424 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:05:54,425 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:05:54,483 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-20 12:05:55,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:05:55,645 INFO L263 TraceCheckSpWp]: Trace formula consists of 4066 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-20 12:05:55,651 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:05:55,819 INFO L134 CoverageAnalysis]: Checked inductivity of 1071 backedges. 410 proven. 0 refuted. 0 times theorem prover too weak. 661 trivial. 0 not checked. [2022-11-20 12:05:55,819 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:05:55,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:05:55,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628810587] [2022-11-20 12:05:55,820 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:05:55,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [201976076] [2022-11-20 12:05:55,820 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [201976076] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:05:55,820 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:05:55,820 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 12:05:55,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278541021] [2022-11-20 12:05:55,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:05:55,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:05:55,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:05:55,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:05:55,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:05:55,823 INFO L87 Difference]: Start difference. First operand 558 states and 826 transitions. Second operand has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 2 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2022-11-20 12:05:56,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:05:56,474 INFO L93 Difference]: Finished difference Result 1119 states and 1687 transitions. [2022-11-20 12:05:56,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 12:05:56,475 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 2 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) Word has length 374 [2022-11-20 12:05:56,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:05:56,479 INFO L225 Difference]: With dead ends: 1119 [2022-11-20 12:05:56,479 INFO L226 Difference]: Without dead ends: 594 [2022-11-20 12:05:56,483 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 376 GetRequests, 369 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-20 12:05:56,484 INFO L413 NwaCegarLoop]: 760 mSDtfsCounter, 23 mSDsluCounter, 2807 mSDsCounter, 0 mSdLazyCounter, 270 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 3567 SdHoareTripleChecker+Invalid, 271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 12:05:56,485 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 3567 Invalid, 271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 270 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-20 12:05:56,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 594 states. [2022-11-20 12:05:56,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 594 to 566. [2022-11-20 12:05:56,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 566 states, 332 states have (on average 1.2319277108433735) internal successors, (409), 334 states have internal predecessors, (409), 198 states have call successors, (198), 33 states have call predecessors, (198), 34 states have return successors, (229), 198 states have call predecessors, (229), 196 states have call successors, (229) [2022-11-20 12:05:56,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 836 transitions. [2022-11-20 12:05:56,539 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 836 transitions. Word has length 374 [2022-11-20 12:05:56,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:05:56,540 INFO L495 AbstractCegarLoop]: Abstraction has 566 states and 836 transitions. [2022-11-20 12:05:56,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 2 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2022-11-20 12:05:56,541 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 836 transitions. [2022-11-20 12:05:56,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2022-11-20 12:05:56,544 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:05:56,544 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:05:56,564 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-11-20 12:05:56,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-20 12:05:56,759 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:05:56,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:05:56,759 INFO L85 PathProgramCache]: Analyzing trace with hash 564327615, now seen corresponding path program 1 times [2022-11-20 12:05:56,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:05:56,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719912853] [2022-11-20 12:05:56,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:05:56,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:05:56,882 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:05:56,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [228370340] [2022-11-20 12:05:56,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:05:56,883 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:05:56,884 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:05:56,885 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:05:56,923 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-11-20 12:05:58,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:05:58,232 INFO L263 TraceCheckSpWp]: Trace formula consists of 4057 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 12:05:58,239 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:05:58,267 INFO L134 CoverageAnalysis]: Checked inductivity of 1071 backedges. 414 proven. 0 refuted. 0 times theorem prover too weak. 657 trivial. 0 not checked. [2022-11-20 12:05:58,267 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:05:58,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:05:58,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719912853] [2022-11-20 12:05:58,268 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:05:58,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [228370340] [2022-11-20 12:05:58,268 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [228370340] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:05:58,268 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:05:58,269 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 12:05:58,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854222199] [2022-11-20 12:05:58,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:05:58,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:05:58,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:05:58,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:05:58,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:05:58,271 INFO L87 Difference]: Start difference. First operand 566 states and 836 transitions. Second operand has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 2 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2022-11-20 12:05:58,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:05:58,342 INFO L93 Difference]: Finished difference Result 1107 states and 1655 transitions. [2022-11-20 12:05:58,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:05:58,343 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 2 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) Word has length 374 [2022-11-20 12:05:58,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:05:58,348 INFO L225 Difference]: With dead ends: 1107 [2022-11-20 12:05:58,348 INFO L226 Difference]: Without dead ends: 574 [2022-11-20 12:05:58,352 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 374 GetRequests, 371 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:05:58,353 INFO L413 NwaCegarLoop]: 757 mSDtfsCounter, 3 mSDsluCounter, 1509 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 2266 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:05:58,353 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 2266 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 12:05:58,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 574 states. [2022-11-20 12:05:58,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 574 to 570. [2022-11-20 12:05:58,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 570 states, 336 states have (on average 1.2291666666666667) internal successors, (413), 338 states have internal predecessors, (413), 198 states have call successors, (198), 33 states have call predecessors, (198), 34 states have return successors, (229), 198 states have call predecessors, (229), 196 states have call successors, (229) [2022-11-20 12:05:58,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 840 transitions. [2022-11-20 12:05:58,398 INFO L78 Accepts]: Start accepts. Automaton has 570 states and 840 transitions. Word has length 374 [2022-11-20 12:05:58,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:05:58,398 INFO L495 AbstractCegarLoop]: Abstraction has 570 states and 840 transitions. [2022-11-20 12:05:58,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 2 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2022-11-20 12:05:58,399 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states and 840 transitions. [2022-11-20 12:05:58,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2022-11-20 12:05:58,402 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:05:58,402 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:05:58,419 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-11-20 12:05:58,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:05:58,620 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:05:58,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:05:58,621 INFO L85 PathProgramCache]: Analyzing trace with hash 1537422269, now seen corresponding path program 1 times [2022-11-20 12:05:58,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:05:58,621 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941709724] [2022-11-20 12:05:58,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:05:58,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:05:58,730 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:05:58,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1947755536] [2022-11-20 12:05:58,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:05:58,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:05:58,731 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:05:58,732 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:05:58,747 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-11-20 12:05:59,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:05:59,951 INFO L263 TraceCheckSpWp]: Trace formula consists of 4042 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-20 12:05:59,956 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:06:00,064 INFO L134 CoverageAnalysis]: Checked inductivity of 1071 backedges. 502 proven. 0 refuted. 0 times theorem prover too weak. 569 trivial. 0 not checked. [2022-11-20 12:06:00,064 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:06:00,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:06:00,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941709724] [2022-11-20 12:06:00,065 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:06:00,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1947755536] [2022-11-20 12:06:00,065 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1947755536] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:06:00,065 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:06:00,066 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 12:06:00,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380854501] [2022-11-20 12:06:00,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:06:00,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:06:00,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:06:00,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:06:00,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:06:00,068 INFO L87 Difference]: Start difference. First operand 570 states and 840 transitions. Second operand has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 4 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (31), 4 states have call predecessors, (31), 4 states have call successors, (31) [2022-11-20 12:06:00,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:06:00,347 INFO L93 Difference]: Finished difference Result 1162 states and 1724 transitions. [2022-11-20 12:06:00,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 12:06:00,348 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 4 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (31), 4 states have call predecessors, (31), 4 states have call successors, (31) Word has length 374 [2022-11-20 12:06:00,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:06:00,354 INFO L225 Difference]: With dead ends: 1162 [2022-11-20 12:06:00,355 INFO L226 Difference]: Without dead ends: 644 [2022-11-20 12:06:00,359 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 376 GetRequests, 369 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-11-20 12:06:00,359 INFO L413 NwaCegarLoop]: 846 mSDtfsCounter, 103 mSDsluCounter, 3200 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 4046 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 12:06:00,360 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 4046 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 12:06:00,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 644 states. [2022-11-20 12:06:00,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 644 to 576. [2022-11-20 12:06:00,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 576 states, 339 states have (on average 1.2271386430678466) internal successors, (416), 341 states have internal predecessors, (416), 201 states have call successors, (201), 33 states have call predecessors, (201), 34 states have return successors, (232), 201 states have call predecessors, (232), 199 states have call successors, (232) [2022-11-20 12:06:00,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 849 transitions. [2022-11-20 12:06:00,413 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 849 transitions. Word has length 374 [2022-11-20 12:06:00,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:06:00,414 INFO L495 AbstractCegarLoop]: Abstraction has 576 states and 849 transitions. [2022-11-20 12:06:00,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 4 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (31), 4 states have call predecessors, (31), 4 states have call successors, (31) [2022-11-20 12:06:00,414 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 849 transitions. [2022-11-20 12:06:00,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2022-11-20 12:06:00,418 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:06:00,418 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:06:00,441 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-11-20 12:06:00,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:06:00,633 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:06:00,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:06:00,634 INFO L85 PathProgramCache]: Analyzing trace with hash -1726504129, now seen corresponding path program 1 times [2022-11-20 12:06:00,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:06:00,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371891539] [2022-11-20 12:06:00,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:06:00,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:06:00,787 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:06:00,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [120904158] [2022-11-20 12:06:00,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:06:00,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:06:00,789 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:06:00,790 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:06:00,815 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-11-20 12:06:02,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:06:02,120 INFO L263 TraceCheckSpWp]: Trace formula consists of 4039 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-20 12:06:02,126 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:06:02,236 INFO L134 CoverageAnalysis]: Checked inductivity of 1071 backedges. 386 proven. 0 refuted. 0 times theorem prover too weak. 685 trivial. 0 not checked. [2022-11-20 12:06:02,236 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:06:02,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:06:02,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371891539] [2022-11-20 12:06:02,237 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:06:02,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [120904158] [2022-11-20 12:06:02,237 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [120904158] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:06:02,237 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:06:02,238 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 12:06:02,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783914020] [2022-11-20 12:06:02,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:06:02,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:06:02,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:06:02,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:06:02,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:06:02,241 INFO L87 Difference]: Start difference. First operand 576 states and 849 transitions. Second operand has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 4 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (31), 4 states have call predecessors, (31), 4 states have call successors, (31) [2022-11-20 12:06:02,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:06:02,537 INFO L93 Difference]: Finished difference Result 1156 states and 1713 transitions. [2022-11-20 12:06:02,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 12:06:02,539 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 4 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (31), 4 states have call predecessors, (31), 4 states have call successors, (31) Word has length 374 [2022-11-20 12:06:02,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:06:02,545 INFO L225 Difference]: With dead ends: 1156 [2022-11-20 12:06:02,546 INFO L226 Difference]: Without dead ends: 644 [2022-11-20 12:06:02,549 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 376 GetRequests, 369 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-11-20 12:06:02,550 INFO L413 NwaCegarLoop]: 812 mSDtfsCounter, 95 mSDsluCounter, 3107 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 3919 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 12:06:02,551 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 3919 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 12:06:02,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 644 states. [2022-11-20 12:06:02,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 644 to 582. [2022-11-20 12:06:02,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 582 states, 342 states have (on average 1.2251461988304093) internal successors, (419), 344 states have internal predecessors, (419), 204 states have call successors, (204), 33 states have call predecessors, (204), 34 states have return successors, (235), 204 states have call predecessors, (235), 202 states have call successors, (235) [2022-11-20 12:06:02,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 582 states to 582 states and 858 transitions. [2022-11-20 12:06:02,606 INFO L78 Accepts]: Start accepts. Automaton has 582 states and 858 transitions. Word has length 374 [2022-11-20 12:06:02,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:06:02,607 INFO L495 AbstractCegarLoop]: Abstraction has 582 states and 858 transitions. [2022-11-20 12:06:02,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 4 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (31), 4 states have call predecessors, (31), 4 states have call successors, (31) [2022-11-20 12:06:02,607 INFO L276 IsEmpty]: Start isEmpty. Operand 582 states and 858 transitions. [2022-11-20 12:06:02,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2022-11-20 12:06:02,610 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:06:02,611 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:06:02,633 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-11-20 12:06:02,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2022-11-20 12:06:02,827 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:06:02,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:06:02,828 INFO L85 PathProgramCache]: Analyzing trace with hash 1836495741, now seen corresponding path program 1 times [2022-11-20 12:06:02,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:06:02,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965048981] [2022-11-20 12:06:02,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:06:02,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:06:02,951 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:06:02,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1517094743] [2022-11-20 12:06:02,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:06:02,952 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:06:02,952 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:06:02,953 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:06:02,979 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-11-20 12:06:04,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:06:04,255 INFO L263 TraceCheckSpWp]: Trace formula consists of 4036 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-20 12:06:04,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:06:04,423 INFO L134 CoverageAnalysis]: Checked inductivity of 1071 backedges. 478 proven. 0 refuted. 0 times theorem prover too weak. 593 trivial. 0 not checked. [2022-11-20 12:06:04,423 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:06:04,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:06:04,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965048981] [2022-11-20 12:06:04,424 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:06:04,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1517094743] [2022-11-20 12:06:04,424 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1517094743] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:06:04,425 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:06:04,425 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 12:06:04,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487238042] [2022-11-20 12:06:04,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:06:04,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 12:06:04,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:06:04,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 12:06:04,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-20 12:06:04,428 INFO L87 Difference]: Start difference. First operand 582 states and 858 transitions. Second operand has 7 states, 6 states have (on average 19.166666666666668) internal successors, (115), 7 states have internal predecessors, (115), 3 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (33), 2 states have call predecessors, (33), 3 states have call successors, (33) [2022-11-20 12:06:04,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:06:04,845 INFO L93 Difference]: Finished difference Result 1129 states and 1668 transitions. [2022-11-20 12:06:04,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 12:06:04,847 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 19.166666666666668) internal successors, (115), 7 states have internal predecessors, (115), 3 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (33), 2 states have call predecessors, (33), 3 states have call successors, (33) Word has length 374 [2022-11-20 12:06:04,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:06:04,853 INFO L225 Difference]: With dead ends: 1129 [2022-11-20 12:06:04,853 INFO L226 Difference]: Without dead ends: 585 [2022-11-20 12:06:04,857 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 374 GetRequests, 368 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:06:04,858 INFO L413 NwaCegarLoop]: 720 mSDtfsCounter, 13 mSDsluCounter, 2775 mSDsCounter, 0 mSdLazyCounter, 328 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 3495 SdHoareTripleChecker+Invalid, 328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 12:06:04,858 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 3495 Invalid, 328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 328 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 12:06:04,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 585 states. [2022-11-20 12:06:04,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 585 to 580. [2022-11-20 12:06:04,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 580 states, 340 states have (on average 1.223529411764706) internal successors, (416), 343 states have internal predecessors, (416), 204 states have call successors, (204), 33 states have call predecessors, (204), 34 states have return successors, (234), 203 states have call predecessors, (234), 202 states have call successors, (234) [2022-11-20 12:06:04,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 580 states to 580 states and 854 transitions. [2022-11-20 12:06:04,915 INFO L78 Accepts]: Start accepts. Automaton has 580 states and 854 transitions. Word has length 374 [2022-11-20 12:06:04,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:06:04,916 INFO L495 AbstractCegarLoop]: Abstraction has 580 states and 854 transitions. [2022-11-20 12:06:04,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 19.166666666666668) internal successors, (115), 7 states have internal predecessors, (115), 3 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (33), 2 states have call predecessors, (33), 3 states have call successors, (33) [2022-11-20 12:06:04,917 INFO L276 IsEmpty]: Start isEmpty. Operand 580 states and 854 transitions. [2022-11-20 12:06:04,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 386 [2022-11-20 12:06:04,920 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:06:04,921 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:06:04,937 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-11-20 12:06:05,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:06:05,137 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:06:05,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:06:05,137 INFO L85 PathProgramCache]: Analyzing trace with hash -990951825, now seen corresponding path program 1 times [2022-11-20 12:06:05,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:06:05,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49877439] [2022-11-20 12:06:05,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:06:05,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:06:05,252 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:06:05,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2057772011] [2022-11-20 12:06:05,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:06:05,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:06:05,253 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:06:05,254 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:06:05,265 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-11-20 12:06:06,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:06:06,640 INFO L263 TraceCheckSpWp]: Trace formula consists of 4074 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-20 12:06:06,648 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:06:06,756 INFO L134 CoverageAnalysis]: Checked inductivity of 1123 backedges. 616 proven. 0 refuted. 0 times theorem prover too weak. 507 trivial. 0 not checked. [2022-11-20 12:06:06,757 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:06:06,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:06:06,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49877439] [2022-11-20 12:06:06,757 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:06:06,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2057772011] [2022-11-20 12:06:06,758 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2057772011] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:06:06,758 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:06:06,758 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-20 12:06:06,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364154292] [2022-11-20 12:06:06,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:06:06,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 12:06:06,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:06:06,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 12:06:06,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-20 12:06:06,762 INFO L87 Difference]: Start difference. First operand 580 states and 854 transitions. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 8 states have internal predecessors, (116), 4 states have call successors, (37), 2 states have call predecessors, (37), 4 states have return successors, (35), 6 states have call predecessors, (35), 4 states have call successors, (35) [2022-11-20 12:06:07,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:06:07,120 INFO L93 Difference]: Finished difference Result 1098 states and 1617 transitions. [2022-11-20 12:06:07,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 12:06:07,120 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 8 states have internal predecessors, (116), 4 states have call successors, (37), 2 states have call predecessors, (37), 4 states have return successors, (35), 6 states have call predecessors, (35), 4 states have call successors, (35) Word has length 385 [2022-11-20 12:06:07,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:06:07,126 INFO L225 Difference]: With dead ends: 1098 [2022-11-20 12:06:07,126 INFO L226 Difference]: Without dead ends: 574 [2022-11-20 12:06:07,131 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 387 GetRequests, 376 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2022-11-20 12:06:07,131 INFO L413 NwaCegarLoop]: 753 mSDtfsCounter, 110 mSDsluCounter, 5829 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 6582 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 12:06:07,132 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 6582 Invalid, 143 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [68 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 12:06:07,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 574 states. [2022-11-20 12:06:07,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 574 to 574. [2022-11-20 12:06:07,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 574 states, 337 states have (on average 1.2225519287833828) internal successors, (412), 340 states have internal predecessors, (412), 201 states have call successors, (201), 33 states have call predecessors, (201), 34 states have return successors, (231), 200 states have call predecessors, (231), 199 states have call successors, (231) [2022-11-20 12:06:07,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 574 states to 574 states and 844 transitions. [2022-11-20 12:06:07,203 INFO L78 Accepts]: Start accepts. Automaton has 574 states and 844 transitions. Word has length 385 [2022-11-20 12:06:07,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:06:07,204 INFO L495 AbstractCegarLoop]: Abstraction has 574 states and 844 transitions. [2022-11-20 12:06:07,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 8 states have internal predecessors, (116), 4 states have call successors, (37), 2 states have call predecessors, (37), 4 states have return successors, (35), 6 states have call predecessors, (35), 4 states have call successors, (35) [2022-11-20 12:06:07,204 INFO L276 IsEmpty]: Start isEmpty. Operand 574 states and 844 transitions. [2022-11-20 12:06:07,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 386 [2022-11-20 12:06:07,209 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:06:07,209 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:06:07,227 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-11-20 12:06:07,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:06:07,425 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:06:07,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:06:07,426 INFO L85 PathProgramCache]: Analyzing trace with hash -1938618067, now seen corresponding path program 1 times [2022-11-20 12:06:07,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:06:07,426 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505396941] [2022-11-20 12:06:07,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:06:07,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:06:07,561 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:06:07,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [594010094] [2022-11-20 12:06:07,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:06:07,562 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:06:07,562 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:06:07,564 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:06:07,577 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-11-20 12:06:09,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:06:09,185 INFO L263 TraceCheckSpWp]: Trace formula consists of 4083 conjuncts, 60 conjunts are in the unsatisfiable core [2022-11-20 12:06:09,197 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:06:09,350 WARN L859 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_4999 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_4999))) is different from true [2022-11-20 12:06:09,705 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-20 12:06:09,769 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2022-11-20 12:06:09,849 INFO L134 CoverageAnalysis]: Checked inductivity of 1123 backedges. 434 proven. 0 refuted. 0 times theorem prover too weak. 689 trivial. 0 not checked. [2022-11-20 12:06:09,849 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:06:09,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:06:09,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505396941] [2022-11-20 12:06:09,850 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:06:09,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [594010094] [2022-11-20 12:06:09,851 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [594010094] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:06:09,851 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:06:09,851 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-11-20 12:06:09,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972563008] [2022-11-20 12:06:09,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:06:09,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-20 12:06:09,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:06:09,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-20 12:06:09,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=123, Unknown=10, NotChecked=22, Total=182 [2022-11-20 12:06:09,854 INFO L87 Difference]: Start difference. First operand 574 states and 844 transitions. Second operand has 14 states, 14 states have (on average 8.5) internal successors, (119), 13 states have internal predecessors, (119), 7 states have call successors, (39), 3 states have call predecessors, (39), 4 states have return successors, (37), 7 states have call predecessors, (37), 7 states have call successors, (37) [2022-11-20 12:06:15,666 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-20 12:06:16,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:06:16,707 INFO L93 Difference]: Finished difference Result 1349 states and 2108 transitions. [2022-11-20 12:06:16,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-20 12:06:16,708 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 8.5) internal successors, (119), 13 states have internal predecessors, (119), 7 states have call successors, (39), 3 states have call predecessors, (39), 4 states have return successors, (37), 7 states have call predecessors, (37), 7 states have call successors, (37) Word has length 385 [2022-11-20 12:06:16,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:06:16,717 INFO L225 Difference]: With dead ends: 1349 [2022-11-20 12:06:16,717 INFO L226 Difference]: Without dead ends: 808 [2022-11-20 12:06:16,722 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 395 GetRequests, 372 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=110, Invalid=425, Unknown=21, NotChecked=44, Total=600 [2022-11-20 12:06:16,723 INFO L413 NwaCegarLoop]: 676 mSDtfsCounter, 372 mSDsluCounter, 4592 mSDsCounter, 0 mSdLazyCounter, 3783 mSolverCounterSat, 256 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 467 SdHoareTripleChecker+Valid, 5268 SdHoareTripleChecker+Invalid, 7855 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 256 IncrementalHoareTripleChecker+Valid, 3783 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 3815 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2022-11-20 12:06:16,729 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [467 Valid, 5268 Invalid, 7855 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [256 Valid, 3783 Invalid, 1 Unknown, 3815 Unchecked, 6.3s Time] [2022-11-20 12:06:16,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 808 states. [2022-11-20 12:06:16,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 808 to 588. [2022-11-20 12:06:16,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 588 states, 349 states have (on average 1.2206303724928367) internal successors, (426), 351 states have internal predecessors, (426), 201 states have call successors, (201), 33 states have call predecessors, (201), 36 states have return successors, (267), 203 states have call predecessors, (267), 199 states have call successors, (267) [2022-11-20 12:06:16,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 588 states to 588 states and 894 transitions. [2022-11-20 12:06:16,793 INFO L78 Accepts]: Start accepts. Automaton has 588 states and 894 transitions. Word has length 385 [2022-11-20 12:06:16,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:06:16,794 INFO L495 AbstractCegarLoop]: Abstraction has 588 states and 894 transitions. [2022-11-20 12:06:16,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 8.5) internal successors, (119), 13 states have internal predecessors, (119), 7 states have call successors, (39), 3 states have call predecessors, (39), 4 states have return successors, (37), 7 states have call predecessors, (37), 7 states have call successors, (37) [2022-11-20 12:06:16,794 INFO L276 IsEmpty]: Start isEmpty. Operand 588 states and 894 transitions. [2022-11-20 12:06:16,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 386 [2022-11-20 12:06:16,797 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:06:16,798 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:06:16,817 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-11-20 12:06:17,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:06:17,017 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:06:17,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:06:17,017 INFO L85 PathProgramCache]: Analyzing trace with hash -1036120973, now seen corresponding path program 1 times [2022-11-20 12:06:17,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:06:17,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463377816] [2022-11-20 12:06:17,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:06:17,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:06:17,124 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:06:17,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [355211344] [2022-11-20 12:06:17,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:06:17,125 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:06:17,125 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:06:17,127 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:06:17,152 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-11-20 12:06:18,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:06:18,463 INFO L263 TraceCheckSpWp]: Trace formula consists of 4076 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 12:06:18,470 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:06:18,497 INFO L134 CoverageAnalysis]: Checked inductivity of 1123 backedges. 612 proven. 0 refuted. 0 times theorem prover too weak. 511 trivial. 0 not checked. [2022-11-20 12:06:18,497 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:06:18,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:06:18,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463377816] [2022-11-20 12:06:18,498 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:06:18,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [355211344] [2022-11-20 12:06:18,499 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [355211344] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:06:18,499 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:06:18,499 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 12:06:18,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164392930] [2022-11-20 12:06:18,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:06:18,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:06:18,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:06:18,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:06:18,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:06:18,501 INFO L87 Difference]: Start difference. First operand 588 states and 894 transitions. Second operand has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 2 states have call successors, (37), 2 states have call predecessors, (37), 2 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2022-11-20 12:06:18,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:06:18,594 INFO L93 Difference]: Finished difference Result 1148 states and 1816 transitions. [2022-11-20 12:06:18,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:06:18,595 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 2 states have call successors, (37), 2 states have call predecessors, (37), 2 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) Word has length 385 [2022-11-20 12:06:18,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:06:18,600 INFO L225 Difference]: With dead ends: 1148 [2022-11-20 12:06:18,600 INFO L226 Difference]: Without dead ends: 593 [2022-11-20 12:06:18,609 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 386 GetRequests, 383 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:06:18,611 INFO L413 NwaCegarLoop]: 762 mSDtfsCounter, 7 mSDsluCounter, 1504 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 2266 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:06:18,612 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 2266 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 12:06:18,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states. [2022-11-20 12:06:18,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 590. [2022-11-20 12:06:18,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 590 states, 351 states have (on average 1.2193732193732194) internal successors, (428), 353 states have internal predecessors, (428), 201 states have call successors, (201), 33 states have call predecessors, (201), 36 states have return successors, (267), 203 states have call predecessors, (267), 199 states have call successors, (267) [2022-11-20 12:06:18,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 590 states to 590 states and 896 transitions. [2022-11-20 12:06:18,676 INFO L78 Accepts]: Start accepts. Automaton has 590 states and 896 transitions. Word has length 385 [2022-11-20 12:06:18,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:06:18,676 INFO L495 AbstractCegarLoop]: Abstraction has 590 states and 896 transitions. [2022-11-20 12:06:18,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 2 states have call successors, (37), 2 states have call predecessors, (37), 2 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2022-11-20 12:06:18,676 INFO L276 IsEmpty]: Start isEmpty. Operand 590 states and 896 transitions. [2022-11-20 12:06:18,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 410 [2022-11-20 12:06:18,680 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:06:18,680 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:06:18,692 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-11-20 12:06:18,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-11-20 12:06:18,882 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:06:18,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:06:18,882 INFO L85 PathProgramCache]: Analyzing trace with hash -1581067377, now seen corresponding path program 1 times [2022-11-20 12:06:18,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:06:18,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473806470] [2022-11-20 12:06:18,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:06:18,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:06:19,043 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:06:19,043 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [978655073] [2022-11-20 12:06:19,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:06:19,044 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:06:19,044 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:06:19,045 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:06:19,083 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-11-20 12:06:20,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:06:20,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 4105 conjuncts, 33 conjunts are in the unsatisfiable core [2022-11-20 12:06:20,449 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:06:20,640 INFO L134 CoverageAnalysis]: Checked inductivity of 1159 backedges. 651 proven. 0 refuted. 0 times theorem prover too weak. 508 trivial. 0 not checked. [2022-11-20 12:06:20,641 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:06:20,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:06:20,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473806470] [2022-11-20 12:06:20,641 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:06:20,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [978655073] [2022-11-20 12:06:20,642 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [978655073] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:06:20,642 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:06:20,643 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-11-20 12:06:20,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112794230] [2022-11-20 12:06:20,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:06:20,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-20 12:06:20,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:06:20,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-20 12:06:20,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2022-11-20 12:06:20,646 INFO L87 Difference]: Start difference. First operand 590 states and 896 transitions. Second operand has 14 states, 13 states have (on average 10.461538461538462) internal successors, (136), 12 states have internal predecessors, (136), 3 states have call successors, (39), 2 states have call predecessors, (39), 5 states have return successors, (37), 4 states have call predecessors, (37), 3 states have call successors, (37) [2022-11-20 12:06:21,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:06:21,530 INFO L93 Difference]: Finished difference Result 1169 states and 1805 transitions. [2022-11-20 12:06:21,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-20 12:06:21,531 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 10.461538461538462) internal successors, (136), 12 states have internal predecessors, (136), 3 states have call successors, (39), 2 states have call predecessors, (39), 5 states have return successors, (37), 4 states have call predecessors, (37), 3 states have call successors, (37) Word has length 409 [2022-11-20 12:06:21,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:06:21,537 INFO L225 Difference]: With dead ends: 1169 [2022-11-20 12:06:21,537 INFO L226 Difference]: Without dead ends: 612 [2022-11-20 12:06:21,541 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 414 GetRequests, 398 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=265, Unknown=0, NotChecked=0, Total=306 [2022-11-20 12:06:21,541 INFO L413 NwaCegarLoop]: 732 mSDtfsCounter, 68 mSDsluCounter, 8549 mSDsCounter, 0 mSdLazyCounter, 811 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 9281 SdHoareTripleChecker+Invalid, 818 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 811 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-20 12:06:21,542 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 9281 Invalid, 818 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 811 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-20 12:06:21,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 612 states. [2022-11-20 12:06:21,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 612 to 598. [2022-11-20 12:06:21,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 598 states, 359 states have (on average 1.2144846796657383) internal successors, (436), 361 states have internal predecessors, (436), 201 states have call successors, (201), 33 states have call predecessors, (201), 36 states have return successors, (267), 203 states have call predecessors, (267), 199 states have call successors, (267) [2022-11-20 12:06:21,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 598 states to 598 states and 904 transitions. [2022-11-20 12:06:21,607 INFO L78 Accepts]: Start accepts. Automaton has 598 states and 904 transitions. Word has length 409 [2022-11-20 12:06:21,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:06:21,607 INFO L495 AbstractCegarLoop]: Abstraction has 598 states and 904 transitions. [2022-11-20 12:06:21,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 10.461538461538462) internal successors, (136), 12 states have internal predecessors, (136), 3 states have call successors, (39), 2 states have call predecessors, (39), 5 states have return successors, (37), 4 states have call predecessors, (37), 3 states have call successors, (37) [2022-11-20 12:06:21,608 INFO L276 IsEmpty]: Start isEmpty. Operand 598 states and 904 transitions. [2022-11-20 12:06:21,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 422 [2022-11-20 12:06:21,612 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:06:21,612 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:06:21,635 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-11-20 12:06:21,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-11-20 12:06:21,830 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:06:21,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:06:21,831 INFO L85 PathProgramCache]: Analyzing trace with hash -1631915571, now seen corresponding path program 1 times [2022-11-20 12:06:21,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:06:21,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030386047] [2022-11-20 12:06:21,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:06:21,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:06:21,939 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:06:21,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [446597705] [2022-11-20 12:06:21,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:06:21,940 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:06:21,940 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:06:21,941 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:06:21,967 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-11-20 12:06:23,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:06:23,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 4107 conjuncts, 47 conjunts are in the unsatisfiable core [2022-11-20 12:06:23,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:06:23,691 INFO L134 CoverageAnalysis]: Checked inductivity of 1213 backedges. 315 proven. 23 refuted. 0 times theorem prover too weak. 875 trivial. 0 not checked. [2022-11-20 12:06:23,691 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:06:25,006 INFO L134 CoverageAnalysis]: Checked inductivity of 1213 backedges. 121 proven. 13 refuted. 0 times theorem prover too weak. 1079 trivial. 0 not checked. [2022-11-20 12:06:25,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:06:25,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030386047] [2022-11-20 12:06:25,006 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:06:25,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [446597705] [2022-11-20 12:06:25,007 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [446597705] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:06:25,007 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:06:25,007 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 15] total 28 [2022-11-20 12:06:25,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407766401] [2022-11-20 12:06:25,008 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:06:25,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-20 12:06:25,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:06:25,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-20 12:06:25,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=697, Unknown=0, NotChecked=0, Total=756 [2022-11-20 12:06:25,011 INFO L87 Difference]: Start difference. First operand 598 states and 904 transitions. Second operand has 28 states, 24 states have (on average 5.75) internal successors, (138), 19 states have internal predecessors, (138), 6 states have call successors, (41), 3 states have call predecessors, (41), 9 states have return successors, (44), 10 states have call predecessors, (44), 5 states have call successors, (44) [2022-11-20 12:06:26,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:06:26,695 INFO L93 Difference]: Finished difference Result 1143 states and 1773 transitions. [2022-11-20 12:06:26,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-20 12:06:26,696 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 24 states have (on average 5.75) internal successors, (138), 19 states have internal predecessors, (138), 6 states have call successors, (41), 3 states have call predecessors, (41), 9 states have return successors, (44), 10 states have call predecessors, (44), 5 states have call successors, (44) Word has length 421 [2022-11-20 12:06:26,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:06:26,703 INFO L225 Difference]: With dead ends: 1143 [2022-11-20 12:06:26,703 INFO L226 Difference]: Without dead ends: 609 [2022-11-20 12:06:26,707 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 845 GetRequests, 810 SyntacticMatches, 4 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=82, Invalid=974, Unknown=0, NotChecked=0, Total=1056 [2022-11-20 12:06:26,708 INFO L413 NwaCegarLoop]: 750 mSDtfsCounter, 70 mSDsluCounter, 16860 mSDsCounter, 0 mSdLazyCounter, 1606 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 17610 SdHoareTripleChecker+Invalid, 1614 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1606 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-20 12:06:26,708 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 17610 Invalid, 1614 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [8 Valid, 1606 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-20 12:06:26,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 609 states. [2022-11-20 12:06:26,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 609 to 605. [2022-11-20 12:06:26,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 605 states, 365 states have (on average 1.2136986301369863) internal successors, (443), 368 states have internal predecessors, (443), 201 states have call successors, (201), 33 states have call predecessors, (201), 37 states have return successors, (299), 203 states have call predecessors, (299), 199 states have call successors, (299) [2022-11-20 12:06:26,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 605 states to 605 states and 943 transitions. [2022-11-20 12:06:26,780 INFO L78 Accepts]: Start accepts. Automaton has 605 states and 943 transitions. Word has length 421 [2022-11-20 12:06:26,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:06:26,781 INFO L495 AbstractCegarLoop]: Abstraction has 605 states and 943 transitions. [2022-11-20 12:06:26,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 24 states have (on average 5.75) internal successors, (138), 19 states have internal predecessors, (138), 6 states have call successors, (41), 3 states have call predecessors, (41), 9 states have return successors, (44), 10 states have call predecessors, (44), 5 states have call successors, (44) [2022-11-20 12:06:26,781 INFO L276 IsEmpty]: Start isEmpty. Operand 605 states and 943 transitions. [2022-11-20 12:06:26,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 404 [2022-11-20 12:06:26,785 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:06:26,785 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:06:26,809 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-11-20 12:06:27,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-11-20 12:06:27,004 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:06:27,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:06:27,004 INFO L85 PathProgramCache]: Analyzing trace with hash 1613941936, now seen corresponding path program 2 times [2022-11-20 12:06:27,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:06:27,005 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48558670] [2022-11-20 12:06:27,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:06:27,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:06:27,137 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:06:27,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [605171568] [2022-11-20 12:06:27,137 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:06:27,138 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:06:27,138 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:06:27,141 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:06:27,162 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-11-20 12:06:29,636 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 12:06:29,637 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:06:29,658 INFO L263 TraceCheckSpWp]: Trace formula consists of 4095 conjuncts, 37 conjunts are in the unsatisfiable core [2022-11-20 12:06:29,667 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:06:29,944 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2022-11-20 12:06:30,001 INFO L134 CoverageAnalysis]: Checked inductivity of 1141 backedges. 445 proven. 0 refuted. 0 times theorem prover too weak. 696 trivial. 0 not checked. [2022-11-20 12:06:30,002 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:06:30,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:06:30,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48558670] [2022-11-20 12:06:30,003 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:06:30,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [605171568] [2022-11-20 12:06:30,003 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [605171568] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:06:30,003 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:06:30,004 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-20 12:06:30,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787346046] [2022-11-20 12:06:30,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:06:30,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 12:06:30,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:06:30,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 12:06:30,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2022-11-20 12:06:30,008 INFO L87 Difference]: Start difference. First operand 605 states and 943 transitions. Second operand has 12 states, 12 states have (on average 10.666666666666666) internal successors, (128), 12 states have internal predecessors, (128), 7 states have call successors, (41), 3 states have call predecessors, (41), 4 states have return successors, (39), 7 states have call predecessors, (39), 7 states have call successors, (39) [2022-11-20 12:06:37,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:06:37,116 INFO L93 Difference]: Finished difference Result 1482 states and 2493 transitions. [2022-11-20 12:06:37,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-20 12:06:37,117 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 10.666666666666666) internal successors, (128), 12 states have internal predecessors, (128), 7 states have call successors, (41), 3 states have call predecessors, (41), 4 states have return successors, (39), 7 states have call predecessors, (39), 7 states have call successors, (39) Word has length 403 [2022-11-20 12:06:37,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:06:37,126 INFO L225 Difference]: With dead ends: 1482 [2022-11-20 12:06:37,126 INFO L226 Difference]: Without dead ends: 910 [2022-11-20 12:06:37,130 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 427 GetRequests, 397 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=194, Invalid=798, Unknown=0, NotChecked=0, Total=992 [2022-11-20 12:06:37,130 INFO L413 NwaCegarLoop]: 682 mSDtfsCounter, 440 mSDsluCounter, 4741 mSDsCounter, 0 mSdLazyCounter, 5627 mSolverCounterSat, 270 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 568 SdHoareTripleChecker+Valid, 5423 SdHoareTripleChecker+Invalid, 5897 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 270 IncrementalHoareTripleChecker+Valid, 5627 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2022-11-20 12:06:37,131 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [568 Valid, 5423 Invalid, 5897 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [270 Valid, 5627 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time] [2022-11-20 12:06:37,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 910 states. [2022-11-20 12:06:37,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 910 to 612. [2022-11-20 12:06:37,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 612 states, 371 states have (on average 1.215633423180593) internal successors, (451), 375 states have internal predecessors, (451), 201 states have call successors, (201), 33 states have call predecessors, (201), 38 states have return successors, (331), 203 states have call predecessors, (331), 199 states have call successors, (331) [2022-11-20 12:06:37,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 612 states to 612 states and 983 transitions. [2022-11-20 12:06:37,289 INFO L78 Accepts]: Start accepts. Automaton has 612 states and 983 transitions. Word has length 403 [2022-11-20 12:06:37,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:06:37,290 INFO L495 AbstractCegarLoop]: Abstraction has 612 states and 983 transitions. [2022-11-20 12:06:37,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.666666666666666) internal successors, (128), 12 states have internal predecessors, (128), 7 states have call successors, (41), 3 states have call predecessors, (41), 4 states have return successors, (39), 7 states have call predecessors, (39), 7 states have call successors, (39) [2022-11-20 12:06:37,290 INFO L276 IsEmpty]: Start isEmpty. Operand 612 states and 983 transitions. [2022-11-20 12:06:37,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 392 [2022-11-20 12:06:37,293 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:06:37,294 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:06:37,318 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2022-11-20 12:06:37,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-11-20 12:06:37,518 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:06:37,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:06:37,518 INFO L85 PathProgramCache]: Analyzing trace with hash 1839518917, now seen corresponding path program 1 times [2022-11-20 12:06:37,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:06:37,519 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504095755] [2022-11-20 12:06:37,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:06:37,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:06:37,626 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:06:37,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [492882345] [2022-11-20 12:06:37,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:06:37,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:06:37,627 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:06:37,628 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:06:37,651 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-11-20 12:06:38,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:06:38,941 INFO L263 TraceCheckSpWp]: Trace formula consists of 4083 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 12:06:38,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:06:39,017 INFO L134 CoverageAnalysis]: Checked inductivity of 1129 backedges. 397 proven. 0 refuted. 0 times theorem prover too weak. 732 trivial. 0 not checked. [2022-11-20 12:06:39,018 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:06:39,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:06:39,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504095755] [2022-11-20 12:06:39,019 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:06:39,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [492882345] [2022-11-20 12:06:39,019 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [492882345] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:06:39,019 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:06:39,019 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:06:39,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476177014] [2022-11-20 12:06:39,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:06:39,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 12:06:39,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:06:39,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 12:06:39,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:06:39,022 INFO L87 Difference]: Start difference. First operand 612 states and 983 transitions. Second operand has 5 states, 5 states have (on average 22.4) internal successors, (112), 5 states have internal predecessors, (112), 2 states have call successors, (37), 2 states have call predecessors, (37), 2 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) [2022-11-20 12:06:39,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:06:39,509 INFO L93 Difference]: Finished difference Result 1191 states and 2019 transitions. [2022-11-20 12:06:39,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 12:06:39,511 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.4) internal successors, (112), 5 states have internal predecessors, (112), 2 states have call successors, (37), 2 states have call predecessors, (37), 2 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) Word has length 391 [2022-11-20 12:06:39,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:06:39,519 INFO L225 Difference]: With dead ends: 1191 [2022-11-20 12:06:39,519 INFO L226 Difference]: Without dead ends: 612 [2022-11-20 12:06:39,522 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 393 GetRequests, 388 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-20 12:06:39,523 INFO L413 NwaCegarLoop]: 789 mSDtfsCounter, 10 mSDsluCounter, 2169 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 2958 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 12:06:39,523 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 2958 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-20 12:06:39,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 612 states. [2022-11-20 12:06:39,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 612 to 612. [2022-11-20 12:06:39,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 612 states, 371 states have (on average 1.210242587601078) internal successors, (449), 375 states have internal predecessors, (449), 201 states have call successors, (201), 33 states have call predecessors, (201), 38 states have return successors, (331), 203 states have call predecessors, (331), 199 states have call successors, (331) [2022-11-20 12:06:39,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 612 states to 612 states and 981 transitions. [2022-11-20 12:06:39,595 INFO L78 Accepts]: Start accepts. Automaton has 612 states and 981 transitions. Word has length 391 [2022-11-20 12:06:39,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:06:39,596 INFO L495 AbstractCegarLoop]: Abstraction has 612 states and 981 transitions. [2022-11-20 12:06:39,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.4) internal successors, (112), 5 states have internal predecessors, (112), 2 states have call successors, (37), 2 states have call predecessors, (37), 2 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) [2022-11-20 12:06:39,596 INFO L276 IsEmpty]: Start isEmpty. Operand 612 states and 981 transitions. [2022-11-20 12:06:39,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 392 [2022-11-20 12:06:39,600 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:06:39,600 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:06:39,619 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2022-11-20 12:06:39,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-11-20 12:06:39,815 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:06:39,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:06:39,816 INFO L85 PathProgramCache]: Analyzing trace with hash -1425549825, now seen corresponding path program 1 times [2022-11-20 12:06:39,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:06:39,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254873260] [2022-11-20 12:06:39,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:06:39,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:06:39,932 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:06:39,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [812261112] [2022-11-20 12:06:39,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:06:39,937 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:06:39,937 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:06:39,938 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:06:39,975 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-11-20 12:06:41,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:06:41,583 INFO L263 TraceCheckSpWp]: Trace formula consists of 4098 conjuncts, 94 conjunts are in the unsatisfiable core [2022-11-20 12:06:41,594 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:06:41,612 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-20 12:06:42,214 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-20 12:06:44,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:06:44,305 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-20 12:06:46,484 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_6657 (Array Int Int))) (= (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_6657) |c_#memory_int|)) is different from true [2022-11-20 12:06:46,805 WARN L859 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_6659 Int)) (= (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_6659)) |c_#memory_int|)) is different from true [2022-11-20 12:06:46,821 WARN L859 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_6659 Int)) (= |c_#memory_int| (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_6659)))) is different from true [2022-11-20 12:06:47,343 INFO L134 CoverageAnalysis]: Checked inductivity of 1129 backedges. 457 proven. 13 refuted. 0 times theorem prover too weak. 649 trivial. 10 not checked. [2022-11-20 12:06:47,343 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:06:48,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:06:48,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254873260] [2022-11-20 12:06:48,036 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:06:48,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [812261112] [2022-11-20 12:06:48,036 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [812261112] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:06:48,036 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:06:48,037 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2022-11-20 12:06:48,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423628979] [2022-11-20 12:06:48,037 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-20 12:06:48,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-20 12:06:48,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:06:48,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-20 12:06:48,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=564, Unknown=15, NotChecked=150, Total=812 [2022-11-20 12:06:48,039 INFO L87 Difference]: Start difference. First operand 612 states and 981 transitions. Second operand has 28 states, 25 states have (on average 5.92) internal successors, (148), 26 states have internal predecessors, (148), 12 states have call successors, (41), 7 states have call predecessors, (41), 11 states have return successors, (39), 12 states have call predecessors, (39), 12 states have call successors, (39) [2022-11-20 12:06:48,829 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_6659 Int)) (= |c_#memory_int| (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_6659)))) (exists ((|aws_array_list_is_valid_~#required_size~0.base| Int)) (and (exists ((v_ArrVal_6657 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |aws_array_list_is_valid_~#required_size~0.base| v_ArrVal_6657))) (= (select |c_old(#valid)| |aws_array_list_is_valid_~#required_size~0.base|) 0)))) is different from true [2022-11-20 12:06:54,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:06:54,119 INFO L93 Difference]: Finished difference Result 1464 states and 2447 transitions. [2022-11-20 12:06:54,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-11-20 12:06:54,120 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 25 states have (on average 5.92) internal successors, (148), 26 states have internal predecessors, (148), 12 states have call successors, (41), 7 states have call predecessors, (41), 11 states have return successors, (39), 12 states have call predecessors, (39), 12 states have call successors, (39) Word has length 391 [2022-11-20 12:06:54,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:06:54,127 INFO L225 Difference]: With dead ends: 1464 [2022-11-20 12:06:54,128 INFO L226 Difference]: Without dead ends: 885 [2022-11-20 12:06:54,131 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 674 GetRequests, 631 SyntacticMatches, 8 SemanticMatches, 35 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 304 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=127, Invalid=916, Unknown=29, NotChecked=260, Total=1332 [2022-11-20 12:06:54,132 INFO L413 NwaCegarLoop]: 807 mSDtfsCounter, 596 mSDsluCounter, 5866 mSDsCounter, 0 mSdLazyCounter, 5514 mSolverCounterSat, 884 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 673 SdHoareTripleChecker+Valid, 6673 SdHoareTripleChecker+Invalid, 13816 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 884 IncrementalHoareTripleChecker+Valid, 5514 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 7418 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2022-11-20 12:06:54,132 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [673 Valid, 6673 Invalid, 13816 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [884 Valid, 5514 Invalid, 0 Unknown, 7418 Unchecked, 5.5s Time] [2022-11-20 12:06:54,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 885 states. [2022-11-20 12:06:54,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 885 to 658. [2022-11-20 12:06:54,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 658 states, 406 states have (on average 1.20935960591133) internal successors, (491), 412 states have internal predecessors, (491), 205 states have call successors, (205), 37 states have call predecessors, (205), 45 states have return successors, (388), 208 states have call predecessors, (388), 203 states have call successors, (388) [2022-11-20 12:06:54,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 658 states to 658 states and 1084 transitions. [2022-11-20 12:06:54,250 INFO L78 Accepts]: Start accepts. Automaton has 658 states and 1084 transitions. Word has length 391 [2022-11-20 12:06:54,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:06:54,251 INFO L495 AbstractCegarLoop]: Abstraction has 658 states and 1084 transitions. [2022-11-20 12:06:54,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 25 states have (on average 5.92) internal successors, (148), 26 states have internal predecessors, (148), 12 states have call successors, (41), 7 states have call predecessors, (41), 11 states have return successors, (39), 12 states have call predecessors, (39), 12 states have call successors, (39) [2022-11-20 12:06:54,251 INFO L276 IsEmpty]: Start isEmpty. Operand 658 states and 1084 transitions. [2022-11-20 12:06:54,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 406 [2022-11-20 12:06:54,255 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:06:54,256 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 7, 6, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:06:54,282 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2022-11-20 12:06:54,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:06:54,476 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:06:54,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:06:54,476 INFO L85 PathProgramCache]: Analyzing trace with hash -847533241, now seen corresponding path program 1 times [2022-11-20 12:06:54,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:06:54,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763493595] [2022-11-20 12:06:54,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:06:54,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:06:54,600 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:06:54,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [238927657] [2022-11-20 12:06:54,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:06:54,600 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:06:54,601 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:06:54,602 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:06:54,643 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-11-20 12:06:56,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:06:56,206 INFO L263 TraceCheckSpWp]: Trace formula consists of 4111 conjuncts, 44 conjunts are in the unsatisfiable core [2022-11-20 12:06:56,213 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:06:56,573 INFO L134 CoverageAnalysis]: Checked inductivity of 1141 backedges. 636 proven. 7 refuted. 0 times theorem prover too weak. 498 trivial. 0 not checked. [2022-11-20 12:06:56,573 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:06:57,871 INFO L134 CoverageAnalysis]: Checked inductivity of 1141 backedges. 87 proven. 30 refuted. 0 times theorem prover too weak. 1024 trivial. 0 not checked. [2022-11-20 12:06:57,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:06:57,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763493595] [2022-11-20 12:06:57,871 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:06:57,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [238927657] [2022-11-20 12:06:57,872 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [238927657] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:06:57,872 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:06:57,872 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 14] total 28 [2022-11-20 12:06:57,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748833011] [2022-11-20 12:06:57,873 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:06:57,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-20 12:06:57,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:06:57,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-20 12:06:57,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=699, Unknown=0, NotChecked=0, Total=756 [2022-11-20 12:06:57,875 INFO L87 Difference]: Start difference. First operand 658 states and 1084 transitions. Second operand has 28 states, 26 states have (on average 6.076923076923077) internal successors, (158), 19 states have internal predecessors, (158), 4 states have call successors, (47), 3 states have call predecessors, (47), 9 states have return successors, (51), 10 states have call predecessors, (51), 3 states have call successors, (51) [2022-11-20 12:06:59,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:06:59,704 INFO L93 Difference]: Finished difference Result 1290 states and 2151 transitions. [2022-11-20 12:06:59,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-20 12:06:59,705 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 26 states have (on average 6.076923076923077) internal successors, (158), 19 states have internal predecessors, (158), 4 states have call successors, (47), 3 states have call predecessors, (47), 9 states have return successors, (51), 10 states have call predecessors, (51), 3 states have call successors, (51) Word has length 405 [2022-11-20 12:06:59,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:06:59,711 INFO L225 Difference]: With dead ends: 1290 [2022-11-20 12:06:59,712 INFO L226 Difference]: Without dead ends: 682 [2022-11-20 12:06:59,715 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 815 GetRequests, 779 SyntacticMatches, 4 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=84, Invalid=1038, Unknown=0, NotChecked=0, Total=1122 [2022-11-20 12:06:59,716 INFO L413 NwaCegarLoop]: 749 mSDtfsCounter, 82 mSDsluCounter, 17556 mSDsCounter, 0 mSdLazyCounter, 1776 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 18305 SdHoareTripleChecker+Invalid, 1783 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1776 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-20 12:06:59,717 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 18305 Invalid, 1783 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [7 Valid, 1776 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-20 12:06:59,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 682 states. [2022-11-20 12:06:59,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 682 to 658. [2022-11-20 12:06:59,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 658 states, 407 states have (on average 1.2088452088452089) internal successors, (492), 410 states have internal predecessors, (492), 205 states have call successors, (205), 37 states have call predecessors, (205), 44 states have return successors, (355), 210 states have call predecessors, (355), 203 states have call successors, (355) [2022-11-20 12:06:59,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 658 states to 658 states and 1052 transitions. [2022-11-20 12:06:59,809 INFO L78 Accepts]: Start accepts. Automaton has 658 states and 1052 transitions. Word has length 405 [2022-11-20 12:06:59,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:06:59,810 INFO L495 AbstractCegarLoop]: Abstraction has 658 states and 1052 transitions. [2022-11-20 12:06:59,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 26 states have (on average 6.076923076923077) internal successors, (158), 19 states have internal predecessors, (158), 4 states have call successors, (47), 3 states have call predecessors, (47), 9 states have return successors, (51), 10 states have call predecessors, (51), 3 states have call successors, (51) [2022-11-20 12:06:59,811 INFO L276 IsEmpty]: Start isEmpty. Operand 658 states and 1052 transitions. [2022-11-20 12:06:59,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 404 [2022-11-20 12:06:59,815 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:06:59,815 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:06:59,839 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2022-11-20 12:07:00,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:07:00,033 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:07:00,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:07:00,033 INFO L85 PathProgramCache]: Analyzing trace with hash -740392278, now seen corresponding path program 1 times [2022-11-20 12:07:00,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:07:00,034 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423627304] [2022-11-20 12:07:00,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:07:00,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:07:00,156 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:07:00,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2079797752] [2022-11-20 12:07:00,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:07:00,157 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:07:00,158 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:07:00,159 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:07:00,195 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-11-20 12:07:01,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:07:01,863 INFO L263 TraceCheckSpWp]: Trace formula consists of 4152 conjuncts, 207 conjunts are in the unsatisfiable core [2022-11-20 12:07:01,877 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:07:01,882 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-20 12:07:02,351 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-20 12:07:02,360 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-20 12:07:03,072 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2022-11-20 12:07:03,199 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 12:07:03,219 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 12:07:03,226 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-20 12:07:03,472 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-20 12:07:03,798 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-20 12:07:03,799 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2022-11-20 12:07:03,817 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 31 [2022-11-20 12:07:03,837 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 31 [2022-11-20 12:07:07,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:07:07,984 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-20 12:07:07,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:07:07,997 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-20 12:07:08,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:07:08,009 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-20 12:07:12,558 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_7311 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_7311) |c_#memory_$Pointer$.offset|)) (exists ((v_ArrVal_7313 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_7313))) (exists ((v_ArrVal_7312 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_7312)))) is different from true [2022-11-20 12:07:13,793 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_7314 (Array Int Int)) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (= (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_7314) |c_#memory_int|)) is different from true [2022-11-20 12:07:14,153 WARN L859 $PredicateComparison]: unable to prove that (and (not (= 0 (mod (select (select |c_#memory_int| |c_aws_array_list_is_valid_#in~list.base|) (+ |c_aws_array_list_is_valid_#in~list.offset| 8)) 18446744073709551616))) (exists ((v_ArrVal_7314 (Array Int Int)) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (= (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_7314) |c_#memory_int|))) is different from true [2022-11-20 12:07:15,200 INFO L321 Elim1Store]: treesize reduction 108, result has 0.9 percent of original size [2022-11-20 12:07:15,201 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 63 treesize of output 82 [2022-11-20 12:07:15,216 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 53 [2022-11-20 12:07:15,228 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 51 [2022-11-20 12:07:15,238 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 35 [2022-11-20 12:07:15,254 INFO L321 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2022-11-20 12:07:15,255 INFO L350 Elim1Store]: Elim1 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 41 treesize of output 1 [2022-11-20 12:07:15,268 INFO L134 CoverageAnalysis]: Checked inductivity of 1154 backedges. 466 proven. 24 refuted. 0 times theorem prover too weak. 657 trivial. 7 not checked. [2022-11-20 12:07:15,268 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:07:17,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:07:17,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423627304] [2022-11-20 12:07:17,290 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:07:17,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2079797752] [2022-11-20 12:07:17,290 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2079797752] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:07:17,291 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:07:17,291 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47] total 47 [2022-11-20 12:07:17,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139751231] [2022-11-20 12:07:17,291 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-20 12:07:17,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-11-20 12:07:17,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:07:17,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-11-20 12:07:17,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=2308, Unknown=61, NotChecked=300, Total=2862 [2022-11-20 12:07:17,293 INFO L87 Difference]: Start difference. First operand 658 states and 1052 transitions. Second operand has 47 states, 43 states have (on average 3.604651162790698) internal successors, (155), 39 states have internal predecessors, (155), 16 states have call successors, (42), 12 states have call predecessors, (42), 15 states have return successors, (40), 14 states have call predecessors, (40), 16 states have call successors, (40) [2022-11-20 12:07:19,386 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_7311 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_7311) |c_#memory_$Pointer$.offset|)) (exists ((v_ArrVal_7314 (Array Int Int)) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (= (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_7314) |c_#memory_int|)) (exists ((v_ArrVal_7313 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_7313))) (exists ((v_ArrVal_7312 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_7312)))) is different from true [2022-11-20 12:07:26,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:07:26,200 INFO L93 Difference]: Finished difference Result 1608 states and 2724 transitions. [2022-11-20 12:07:26,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-11-20 12:07:26,201 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 43 states have (on average 3.604651162790698) internal successors, (155), 39 states have internal predecessors, (155), 16 states have call successors, (42), 12 states have call predecessors, (42), 15 states have return successors, (40), 14 states have call predecessors, (40), 16 states have call successors, (40) Word has length 403 [2022-11-20 12:07:26,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:07:26,210 INFO L225 Difference]: With dead ends: 1608 [2022-11-20 12:07:26,210 INFO L226 Difference]: Without dead ends: 1000 [2022-11-20 12:07:26,218 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 702 GetRequests, 624 SyntacticMatches, 7 SemanticMatches, 71 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 1426 ImplicationChecksByTransitivity, 13.3s TimeCoverageRelationStatistics Valid=370, Invalid=4252, Unknown=86, NotChecked=548, Total=5256 [2022-11-20 12:07:26,219 INFO L413 NwaCegarLoop]: 668 mSDtfsCounter, 349 mSDsluCounter, 8636 mSDsCounter, 0 mSdLazyCounter, 6025 mSolverCounterSat, 329 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 449 SdHoareTripleChecker+Valid, 9304 SdHoareTripleChecker+Invalid, 20442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 329 IncrementalHoareTripleChecker+Valid, 6025 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 14088 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2022-11-20 12:07:26,219 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [449 Valid, 9304 Invalid, 20442 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [329 Valid, 6025 Invalid, 0 Unknown, 14088 Unchecked, 6.9s Time] [2022-11-20 12:07:26,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1000 states. [2022-11-20 12:07:26,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1000 to 702. [2022-11-20 12:07:26,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 702 states, 440 states have (on average 1.2068181818181818) internal successors, (531), 445 states have internal predecessors, (531), 210 states have call successors, (210), 40 states have call predecessors, (210), 50 states have return successors, (416), 216 states have call predecessors, (416), 208 states have call successors, (416) [2022-11-20 12:07:26,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 702 states to 702 states and 1157 transitions. [2022-11-20 12:07:26,360 INFO L78 Accepts]: Start accepts. Automaton has 702 states and 1157 transitions. Word has length 403 [2022-11-20 12:07:26,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:07:26,360 INFO L495 AbstractCegarLoop]: Abstraction has 702 states and 1157 transitions. [2022-11-20 12:07:26,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 43 states have (on average 3.604651162790698) internal successors, (155), 39 states have internal predecessors, (155), 16 states have call successors, (42), 12 states have call predecessors, (42), 15 states have return successors, (40), 14 states have call predecessors, (40), 16 states have call successors, (40) [2022-11-20 12:07:26,361 INFO L276 IsEmpty]: Start isEmpty. Operand 702 states and 1157 transitions. [2022-11-20 12:07:26,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 404 [2022-11-20 12:07:26,373 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:07:26,374 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:07:26,394 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2022-11-20 12:07:26,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:07:26,588 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:07:26,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:07:26,588 INFO L85 PathProgramCache]: Analyzing trace with hash -296568916, now seen corresponding path program 1 times [2022-11-20 12:07:26,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:07:26,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203562606] [2022-11-20 12:07:26,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:07:26,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:07:26,697 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:07:26,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1689702539] [2022-11-20 12:07:26,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:07:26,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:07:26,698 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:07:26,699 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:07:26,704 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-11-20 12:07:28,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:07:28,505 INFO L263 TraceCheckSpWp]: Trace formula consists of 4149 conjuncts, 147 conjunts are in the unsatisfiable core [2022-11-20 12:07:28,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:07:28,524 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-20 12:07:28,955 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-20 12:07:28,962 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-20 12:07:29,413 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 12:07:29,416 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 12:07:29,419 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-20 12:07:29,478 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_7690 Int) (v_ArrVal_7692 Int) (v_ArrVal_7689 Int) (ensure_array_list_has_allocated_data_member_~list.offset Int) (v_ArrVal_7694 Int)) (let ((.cse0 (+ ensure_array_list_has_allocated_data_member_~list.offset 32))) (and (<= |c_ensure_array_list_has_allocated_data_member_#in~list.offset| ensure_array_list_has_allocated_data_member_~list.offset) (= (store |c_old(#memory_$Pointer$.offset)| |c_ensure_array_list_has_allocated_data_member_#in~list.base| (store (store (select |c_old(#memory_$Pointer$.offset)| |c_ensure_array_list_has_allocated_data_member_#in~list.base|) .cse0 v_ArrVal_7690) ensure_array_list_has_allocated_data_member_~list.offset v_ArrVal_7692)) |c_#memory_$Pointer$.offset|) (= (store |c_old(#memory_$Pointer$.base)| |c_ensure_array_list_has_allocated_data_member_#in~list.base| (store (store (select |c_old(#memory_$Pointer$.base)| |c_ensure_array_list_has_allocated_data_member_#in~list.base|) .cse0 v_ArrVal_7689) ensure_array_list_has_allocated_data_member_~list.offset v_ArrVal_7694)) |c_#memory_$Pointer$.base|)))) (exists ((|bounded_malloc_#res.base| Int) (v_ArrVal_7686 Int)) (and (= (select |c_old(#valid)| |bounded_malloc_#res.base|) 0) (= |c_#valid| (store |c_old(#valid)| |bounded_malloc_#res.base| v_ArrVal_7686))))) is different from true [2022-11-20 12:07:29,543 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-20 12:07:29,544 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-20 12:07:29,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:07:29,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:07:29,565 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 29 [2022-11-20 12:07:29,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:07:29,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:07:29,579 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 29 [2022-11-20 12:07:29,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:07:29,597 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-20 12:07:29,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:07:29,608 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-20 12:07:29,933 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_7699 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_7699) |c_#memory_$Pointer$.base|)) (exists ((v_ArrVal_7700 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_7700) |c_#memory_$Pointer$.offset|))) is different from true [2022-11-20 12:07:31,058 INFO L134 CoverageAnalysis]: Checked inductivity of 1154 backedges. 463 proven. 28 refuted. 3 times theorem prover too weak. 658 trivial. 2 not checked. [2022-11-20 12:07:31,058 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:07:32,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:07:32,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203562606] [2022-11-20 12:07:32,307 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:07:32,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1689702539] [2022-11-20 12:07:32,307 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1689702539] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:07:32,307 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:07:32,308 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2022-11-20 12:07:32,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924305782] [2022-11-20 12:07:32,308 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-20 12:07:32,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-11-20 12:07:32,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:07:32,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-11-20 12:07:32,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=1276, Unknown=17, NotChecked=146, Total=1560 [2022-11-20 12:07:32,310 INFO L87 Difference]: Start difference. First operand 702 states and 1157 transitions. Second operand has 33 states, 30 states have (on average 5.166666666666667) internal successors, (155), 29 states have internal predecessors, (155), 15 states have call successors, (42), 7 states have call predecessors, (42), 11 states have return successors, (40), 11 states have call predecessors, (40), 15 states have call successors, (40) [2022-11-20 12:07:40,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:07:40,699 INFO L93 Difference]: Finished difference Result 1670 states and 2912 transitions. [2022-11-20 12:07:40,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-11-20 12:07:40,700 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 30 states have (on average 5.166666666666667) internal successors, (155), 29 states have internal predecessors, (155), 15 states have call successors, (42), 7 states have call predecessors, (42), 11 states have return successors, (40), 11 states have call predecessors, (40), 15 states have call successors, (40) Word has length 403 [2022-11-20 12:07:40,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:07:40,707 INFO L225 Difference]: With dead ends: 1670 [2022-11-20 12:07:40,707 INFO L226 Difference]: Without dead ends: 1041 [2022-11-20 12:07:40,713 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 696 GetRequests, 639 SyntacticMatches, 7 SemanticMatches, 50 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 633 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=209, Invalid=2211, Unknown=38, NotChecked=194, Total=2652 [2022-11-20 12:07:40,714 INFO L413 NwaCegarLoop]: 744 mSDtfsCounter, 358 mSDsluCounter, 7307 mSDsCounter, 0 mSdLazyCounter, 6421 mSolverCounterSat, 312 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 463 SdHoareTripleChecker+Valid, 8051 SdHoareTripleChecker+Invalid, 14725 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 312 IncrementalHoareTripleChecker+Valid, 6421 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 7992 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2022-11-20 12:07:40,714 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [463 Valid, 8051 Invalid, 14725 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [312 Valid, 6421 Invalid, 0 Unknown, 7992 Unchecked, 7.2s Time] [2022-11-20 12:07:40,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1041 states. [2022-11-20 12:07:40,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1041 to 701. [2022-11-20 12:07:40,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 701 states, 439 states have (on average 1.20501138952164) internal successors, (529), 445 states have internal predecessors, (529), 210 states have call successors, (210), 40 states have call predecessors, (210), 50 states have return successors, (416), 215 states have call predecessors, (416), 208 states have call successors, (416) [2022-11-20 12:07:40,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 701 states to 701 states and 1155 transitions. [2022-11-20 12:07:40,869 INFO L78 Accepts]: Start accepts. Automaton has 701 states and 1155 transitions. Word has length 403 [2022-11-20 12:07:40,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:07:40,870 INFO L495 AbstractCegarLoop]: Abstraction has 701 states and 1155 transitions. [2022-11-20 12:07:40,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 30 states have (on average 5.166666666666667) internal successors, (155), 29 states have internal predecessors, (155), 15 states have call successors, (42), 7 states have call predecessors, (42), 11 states have return successors, (40), 11 states have call predecessors, (40), 15 states have call successors, (40) [2022-11-20 12:07:40,870 INFO L276 IsEmpty]: Start isEmpty. Operand 701 states and 1155 transitions. [2022-11-20 12:07:40,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 398 [2022-11-20 12:07:40,875 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:07:40,876 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:07:40,902 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2022-11-20 12:07:41,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:07:41,090 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:07:41,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:07:41,091 INFO L85 PathProgramCache]: Analyzing trace with hash -1215229615, now seen corresponding path program 1 times [2022-11-20 12:07:41,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:07:41,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144983522] [2022-11-20 12:07:41,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:07:41,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:07:41,189 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:07:41,190 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [853575863] [2022-11-20 12:07:41,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:07:41,190 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:07:41,191 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:07:41,192 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:07:41,215 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2022-11-20 12:07:42,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:07:42,975 INFO L263 TraceCheckSpWp]: Trace formula consists of 4113 conjuncts, 153 conjunts are in the unsatisfiable core [2022-11-20 12:07:42,986 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:07:42,989 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-20 12:07:43,402 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-20 12:07:43,409 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-20 12:07:43,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:07:43,806 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-20 12:07:43,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:07:43,824 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-20 12:07:43,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:07:43,846 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-20 12:07:43,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:07:43,856 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-20 12:07:44,150 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_8042 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_8042) |c_#memory_$Pointer$.offset|)) (exists ((v_ArrVal_8043 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_8043)))) is different from true [2022-11-20 12:07:45,194 INFO L134 CoverageAnalysis]: Checked inductivity of 1153 backedges. 455 proven. 37 refuted. 3 times theorem prover too weak. 658 trivial. 0 not checked. [2022-11-20 12:07:45,195 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:07:46,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:07:46,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144983522] [2022-11-20 12:07:46,681 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:07:46,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [853575863] [2022-11-20 12:07:46,682 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [853575863] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:07:46,682 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:07:46,682 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2022-11-20 12:07:46,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135754359] [2022-11-20 12:07:46,682 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-20 12:07:46,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-11-20 12:07:46,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:07:46,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-11-20 12:07:46,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=1140, Unknown=8, NotChecked=68, Total=1332 [2022-11-20 12:07:46,685 INFO L87 Difference]: Start difference. First operand 701 states and 1155 transitions. Second operand has 30 states, 27 states have (on average 5.592592592592593) internal successors, (151), 26 states have internal predecessors, (151), 13 states have call successors, (41), 7 states have call predecessors, (41), 10 states have return successors, (39), 9 states have call predecessors, (39), 13 states have call successors, (39) [2022-11-20 12:07:55,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:07:55,735 INFO L93 Difference]: Finished difference Result 1675 states and 2916 transitions. [2022-11-20 12:07:55,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-11-20 12:07:55,735 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 27 states have (on average 5.592592592592593) internal successors, (151), 26 states have internal predecessors, (151), 13 states have call successors, (41), 7 states have call predecessors, (41), 10 states have return successors, (39), 9 states have call predecessors, (39), 13 states have call successors, (39) Word has length 397 [2022-11-20 12:07:55,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:07:55,746 INFO L225 Difference]: With dead ends: 1675 [2022-11-20 12:07:55,746 INFO L226 Difference]: Without dead ends: 1046 [2022-11-20 12:07:55,752 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 695 GetRequests, 640 SyntacticMatches, 7 SemanticMatches, 48 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 609 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=226, Invalid=2106, Unknown=24, NotChecked=94, Total=2450 [2022-11-20 12:07:55,753 INFO L413 NwaCegarLoop]: 717 mSDtfsCounter, 495 mSDsluCounter, 7846 mSDsCounter, 0 mSdLazyCounter, 7105 mSolverCounterSat, 634 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 602 SdHoareTripleChecker+Valid, 8563 SdHoareTripleChecker+Invalid, 14918 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 634 IncrementalHoareTripleChecker+Valid, 7105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 7179 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2022-11-20 12:07:55,753 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [602 Valid, 8563 Invalid, 14918 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [634 Valid, 7105 Invalid, 0 Unknown, 7179 Unchecked, 7.9s Time] [2022-11-20 12:07:55,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1046 states. [2022-11-20 12:07:55,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1046 to 711. [2022-11-20 12:07:55,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 711 states, 446 states have (on average 1.2085201793721974) internal successors, (539), 452 states have internal predecessors, (539), 212 states have call successors, (212), 41 states have call predecessors, (212), 51 states have return successors, (417), 217 states have call predecessors, (417), 210 states have call successors, (417) [2022-11-20 12:07:55,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 711 states to 711 states and 1168 transitions. [2022-11-20 12:07:55,904 INFO L78 Accepts]: Start accepts. Automaton has 711 states and 1168 transitions. Word has length 397 [2022-11-20 12:07:55,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:07:55,905 INFO L495 AbstractCegarLoop]: Abstraction has 711 states and 1168 transitions. [2022-11-20 12:07:55,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 27 states have (on average 5.592592592592593) internal successors, (151), 26 states have internal predecessors, (151), 13 states have call successors, (41), 7 states have call predecessors, (41), 10 states have return successors, (39), 9 states have call predecessors, (39), 13 states have call successors, (39) [2022-11-20 12:07:55,905 INFO L276 IsEmpty]: Start isEmpty. Operand 711 states and 1168 transitions. [2022-11-20 12:07:55,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 417 [2022-11-20 12:07:55,910 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:07:55,910 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 7, 6, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:07:55,934 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2022-11-20 12:07:56,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2022-11-20 12:07:56,124 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:07:56,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:07:56,124 INFO L85 PathProgramCache]: Analyzing trace with hash 1977224471, now seen corresponding path program 1 times [2022-11-20 12:07:56,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:07:56,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914529900] [2022-11-20 12:07:56,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:07:56,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:07:56,247 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:07:56,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [4842970] [2022-11-20 12:07:56,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:07:56,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:07:56,248 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:07:56,249 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:07:56,284 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2022-11-20 12:07:58,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:07:58,080 INFO L263 TraceCheckSpWp]: Trace formula consists of 4163 conjuncts, 47 conjunts are in the unsatisfiable core [2022-11-20 12:07:58,086 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:07:58,371 INFO L134 CoverageAnalysis]: Checked inductivity of 1145 backedges. 508 proven. 14 refuted. 0 times theorem prover too weak. 623 trivial. 0 not checked. [2022-11-20 12:07:58,371 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:07:59,473 INFO L134 CoverageAnalysis]: Checked inductivity of 1145 backedges. 90 proven. 32 refuted. 0 times theorem prover too weak. 1023 trivial. 0 not checked. [2022-11-20 12:07:59,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:07:59,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914529900] [2022-11-20 12:07:59,474 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:07:59,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [4842970] [2022-11-20 12:07:59,474 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [4842970] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:07:59,474 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:07:59,475 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 15] total 28 [2022-11-20 12:07:59,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299366368] [2022-11-20 12:07:59,475 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:07:59,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-20 12:07:59,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:07:59,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-20 12:07:59,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=697, Unknown=0, NotChecked=0, Total=756 [2022-11-20 12:07:59,477 INFO L87 Difference]: Start difference. First operand 711 states and 1168 transitions. Second operand has 28 states, 24 states have (on average 6.333333333333333) internal successors, (152), 19 states have internal predecessors, (152), 6 states have call successors, (48), 3 states have call predecessors, (48), 9 states have return successors, (51), 10 states have call predecessors, (51), 5 states have call successors, (51) [2022-11-20 12:08:01,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:08:01,316 INFO L93 Difference]: Finished difference Result 1321 states and 2186 transitions. [2022-11-20 12:08:01,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-20 12:08:01,317 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 24 states have (on average 6.333333333333333) internal successors, (152), 19 states have internal predecessors, (152), 6 states have call successors, (48), 3 states have call predecessors, (48), 9 states have return successors, (51), 10 states have call predecessors, (51), 5 states have call successors, (51) Word has length 416 [2022-11-20 12:08:01,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:08:01,325 INFO L225 Difference]: With dead ends: 1321 [2022-11-20 12:08:01,325 INFO L226 Difference]: Without dead ends: 715 [2022-11-20 12:08:01,329 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 836 GetRequests, 800 SyntacticMatches, 4 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=87, Invalid=1035, Unknown=0, NotChecked=0, Total=1122 [2022-11-20 12:08:01,330 INFO L413 NwaCegarLoop]: 751 mSDtfsCounter, 77 mSDsluCounter, 18279 mSDsCounter, 0 mSdLazyCounter, 1826 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 19030 SdHoareTripleChecker+Invalid, 1832 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1826 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-20 12:08:01,330 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 19030 Invalid, 1832 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [6 Valid, 1826 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-20 12:08:01,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 715 states. [2022-11-20 12:08:01,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 715 to 711. [2022-11-20 12:08:01,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 711 states, 446 states have (on average 1.2085201793721974) internal successors, (539), 452 states have internal predecessors, (539), 212 states have call successors, (212), 41 states have call predecessors, (212), 51 states have return successors, (415), 217 states have call predecessors, (415), 210 states have call successors, (415) [2022-11-20 12:08:01,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 711 states to 711 states and 1166 transitions. [2022-11-20 12:08:01,447 INFO L78 Accepts]: Start accepts. Automaton has 711 states and 1166 transitions. Word has length 416 [2022-11-20 12:08:01,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:08:01,448 INFO L495 AbstractCegarLoop]: Abstraction has 711 states and 1166 transitions. [2022-11-20 12:08:01,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 24 states have (on average 6.333333333333333) internal successors, (152), 19 states have internal predecessors, (152), 6 states have call successors, (48), 3 states have call predecessors, (48), 9 states have return successors, (51), 10 states have call predecessors, (51), 5 states have call successors, (51) [2022-11-20 12:08:01,449 INFO L276 IsEmpty]: Start isEmpty. Operand 711 states and 1166 transitions. [2022-11-20 12:08:01,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2022-11-20 12:08:01,454 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:08:01,454 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 6, 6, 6, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:08:01,471 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2022-11-20 12:08:01,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2022-11-20 12:08:01,668 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:08:01,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:08:01,668 INFO L85 PathProgramCache]: Analyzing trace with hash 803379136, now seen corresponding path program 2 times [2022-11-20 12:08:01,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:08:01,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687622083] [2022-11-20 12:08:01,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:08:01,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:08:01,768 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:08:01,769 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [409713879] [2022-11-20 12:08:01,769 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:08:01,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:08:01,769 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:08:01,771 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:08:01,798 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2022-11-20 12:08:03,385 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 12:08:03,385 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:08:03,406 INFO L263 TraceCheckSpWp]: Trace formula consists of 4179 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 12:08:03,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:08:03,484 INFO L134 CoverageAnalysis]: Checked inductivity of 1157 backedges. 587 proven. 0 refuted. 0 times theorem prover too weak. 570 trivial. 0 not checked. [2022-11-20 12:08:03,484 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:08:03,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:08:03,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687622083] [2022-11-20 12:08:03,485 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:08:03,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [409713879] [2022-11-20 12:08:03,486 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [409713879] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:08:03,486 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:08:03,486 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:08:03,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244363078] [2022-11-20 12:08:03,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:08:03,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 12:08:03,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:08:03,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 12:08:03,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:08:03,488 INFO L87 Difference]: Start difference. First operand 711 states and 1166 transitions. Second operand has 5 states, 5 states have (on average 27.8) internal successors, (139), 5 states have internal predecessors, (139), 2 states have call successors, (41), 2 states have call predecessors, (41), 2 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) [2022-11-20 12:08:04,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:08:04,131 INFO L93 Difference]: Finished difference Result 1344 states and 2329 transitions. [2022-11-20 12:08:04,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:08:04,131 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.8) internal successors, (139), 5 states have internal predecessors, (139), 2 states have call successors, (41), 2 states have call predecessors, (41), 2 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) Word has length 414 [2022-11-20 12:08:04,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:08:04,138 INFO L225 Difference]: With dead ends: 1344 [2022-11-20 12:08:04,139 INFO L226 Difference]: Without dead ends: 715 [2022-11-20 12:08:04,144 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 414 GetRequests, 410 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:08:04,144 INFO L413 NwaCegarLoop]: 779 mSDtfsCounter, 13 mSDsluCounter, 2149 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2928 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 12:08:04,145 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 2928 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-20 12:08:04,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 715 states. [2022-11-20 12:08:04,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 715 to 710. [2022-11-20 12:08:04,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 710 states, 445 states have (on average 1.2044943820224718) internal successors, (536), 451 states have internal predecessors, (536), 212 states have call successors, (212), 41 states have call predecessors, (212), 51 states have return successors, (381), 217 states have call predecessors, (381), 210 states have call successors, (381) [2022-11-20 12:08:04,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 710 states to 710 states and 1129 transitions. [2022-11-20 12:08:04,258 INFO L78 Accepts]: Start accepts. Automaton has 710 states and 1129 transitions. Word has length 414 [2022-11-20 12:08:04,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:08:04,258 INFO L495 AbstractCegarLoop]: Abstraction has 710 states and 1129 transitions. [2022-11-20 12:08:04,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.8) internal successors, (139), 5 states have internal predecessors, (139), 2 states have call successors, (41), 2 states have call predecessors, (41), 2 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) [2022-11-20 12:08:04,259 INFO L276 IsEmpty]: Start isEmpty. Operand 710 states and 1129 transitions. [2022-11-20 12:08:04,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 411 [2022-11-20 12:08:04,264 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:08:04,264 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 6, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:08:04,283 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2022-11-20 12:08:04,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2022-11-20 12:08:04,479 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:08:04,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:08:04,480 INFO L85 PathProgramCache]: Analyzing trace with hash -1784126024, now seen corresponding path program 3 times [2022-11-20 12:08:04,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:08:04,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024663120] [2022-11-20 12:08:04,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:08:04,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:08:04,582 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:08:04,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [964325403] [2022-11-20 12:08:04,582 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 12:08:04,582 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:08:04,583 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:08:04,584 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:08:04,585 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2022-11-20 12:08:06,807 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-11-20 12:08:06,807 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:08:06,821 INFO L263 TraceCheckSpWp]: Trace formula consists of 2591 conjuncts, 56 conjunts are in the unsatisfiable core [2022-11-20 12:08:06,827 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:08:07,277 INFO L134 CoverageAnalysis]: Checked inductivity of 1139 backedges. 482 proven. 8 refuted. 0 times theorem prover too weak. 649 trivial. 0 not checked. [2022-11-20 12:08:07,277 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:08:08,024 INFO L321 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2022-11-20 12:08:08,024 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 25 [2022-11-20 12:08:08,039 INFO L321 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2022-11-20 12:08:08,040 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 12 [2022-11-20 12:08:08,408 INFO L134 CoverageAnalysis]: Checked inductivity of 1139 backedges. 90 proven. 21 refuted. 0 times theorem prover too weak. 1028 trivial. 0 not checked. [2022-11-20 12:08:08,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:08:08,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024663120] [2022-11-20 12:08:08,408 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:08:08,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [964325403] [2022-11-20 12:08:08,409 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [964325403] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:08:08,409 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:08:08,409 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 15] total 20 [2022-11-20 12:08:08,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770702785] [2022-11-20 12:08:08,410 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:08:08,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-20 12:08:08,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:08:08,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-20 12:08:08,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=331, Unknown=0, NotChecked=0, Total=380 [2022-11-20 12:08:08,412 INFO L87 Difference]: Start difference. First operand 710 states and 1129 transitions. Second operand has 20 states, 18 states have (on average 7.833333333333333) internal successors, (141), 17 states have internal predecessors, (141), 6 states have call successors, (47), 5 states have call predecessors, (47), 6 states have return successors, (45), 5 states have call predecessors, (45), 5 states have call successors, (45) [2022-11-20 12:08:11,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:08:11,012 INFO L93 Difference]: Finished difference Result 1328 states and 2155 transitions. [2022-11-20 12:08:11,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-20 12:08:11,012 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 18 states have (on average 7.833333333333333) internal successors, (141), 17 states have internal predecessors, (141), 6 states have call successors, (47), 5 states have call predecessors, (47), 6 states have return successors, (45), 5 states have call predecessors, (45), 5 states have call successors, (45) Word has length 410 [2022-11-20 12:08:11,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:08:11,020 INFO L225 Difference]: With dead ends: 1328 [2022-11-20 12:08:11,021 INFO L226 Difference]: Without dead ends: 731 [2022-11-20 12:08:11,025 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 829 GetRequests, 797 SyntacticMatches, 3 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=130, Invalid=800, Unknown=0, NotChecked=0, Total=930 [2022-11-20 12:08:11,026 INFO L413 NwaCegarLoop]: 674 mSDtfsCounter, 55 mSDsluCounter, 7561 mSDsCounter, 0 mSdLazyCounter, 1847 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 8235 SdHoareTripleChecker+Invalid, 2007 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1847 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 156 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:08:11,026 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 8235 Invalid, 2007 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1847 Invalid, 0 Unknown, 156 Unchecked, 2.0s Time] [2022-11-20 12:08:11,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 731 states. [2022-11-20 12:08:11,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 731 to 725. [2022-11-20 12:08:11,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 725 states, 455 states have (on average 1.2021978021978021) internal successors, (547), 459 states have internal predecessors, (547), 216 states have call successors, (216), 43 states have call predecessors, (216), 52 states have return successors, (385), 222 states have call predecessors, (385), 214 states have call successors, (385) [2022-11-20 12:08:11,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 725 states to 725 states and 1148 transitions. [2022-11-20 12:08:11,210 INFO L78 Accepts]: Start accepts. Automaton has 725 states and 1148 transitions. Word has length 410 [2022-11-20 12:08:11,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:08:11,211 INFO L495 AbstractCegarLoop]: Abstraction has 725 states and 1148 transitions. [2022-11-20 12:08:11,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 18 states have (on average 7.833333333333333) internal successors, (141), 17 states have internal predecessors, (141), 6 states have call successors, (47), 5 states have call predecessors, (47), 6 states have return successors, (45), 5 states have call predecessors, (45), 5 states have call successors, (45) [2022-11-20 12:08:11,211 INFO L276 IsEmpty]: Start isEmpty. Operand 725 states and 1148 transitions. [2022-11-20 12:08:11,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 407 [2022-11-20 12:08:11,216 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:08:11,216 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 6, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:08:11,233 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2022-11-20 12:08:11,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:08:11,436 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:08:11,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:08:11,437 INFO L85 PathProgramCache]: Analyzing trace with hash 652084499, now seen corresponding path program 1 times [2022-11-20 12:08:11,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:08:11,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508015956] [2022-11-20 12:08:11,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:08:11,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:08:11,569 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:08:11,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1375529817] [2022-11-20 12:08:11,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:08:11,570 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:08:11,570 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:08:11,572 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:08:11,595 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c72b3e-b472-4c30-9c1e-96b57f3de606/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2022-11-20 12:08:13,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:08:13,396 INFO L263 TraceCheckSpWp]: Trace formula consists of 4160 conjuncts, 188 conjunts are in the unsatisfiable core [2022-11-20 12:08:13,409 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:08:13,415 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-20 12:08:13,956 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2022-11-20 12:08:13,968 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-20 12:08:14,048 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-20 12:08:14,142 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-20 12:08:14,237 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-20 12:08:14,238 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-20 12:08:16,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:08:16,297 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-20 12:08:18,553 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_9326 (Array Int Int))) (= (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_9326) |c_#memory_int|)) is different from true [2022-11-20 12:08:19,485 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_9330 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_9329 (Array Int Int)) (v_ArrVal_9327 Int)) (and (= (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_9327)) |c_#memory_$Pointer$.offset|) (= |c_#memory_int| (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_9329)) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_9330))))) is different from true [2022-11-20 12:08:19,925 WARN L859 $PredicateComparison]: unable to prove that (and (not (= 0 (mod (select (select |c_#memory_int| |c_aws_array_list_is_valid_#in~list.base|) (+ |c_aws_array_list_is_valid_#in~list.offset| 8)) 18446744073709551616))) (exists ((v_ArrVal_9330 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_9329 (Array Int Int)) (v_ArrVal_9327 Int)) (and (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_9327))) (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_9330)) |c_#memory_$Pointer$.base|) (= |c_#memory_int| (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_9329))))) is different from true [2022-11-20 12:08:20,035 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-20 12:08:20,036 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 42 [2022-11-20 12:08:20,087 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-20 12:08:20,088 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 36 [2022-11-20 12:08:21,330 INFO L321 Elim1Store]: treesize reduction 66, result has 39.4 percent of original size [2022-11-20 12:08:21,330 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 63 treesize of output 124 [2022-11-20 12:08:21,375 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:08:21,376 INFO L350 Elim1Store]: Elim1 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 45 treesize of output 63 [2022-11-20 12:08:21,579 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 5 [2022-11-20 12:08:21,593 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-20 12:08:21,613 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 5 [2022-11-20 12:08:21,623 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 5 [2022-11-20 12:08:22,834 INFO L321 Elim1Store]: treesize reduction 470, result has 17.4 percent of original size [2022-11-20 12:08:22,834 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 5 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 6 new quantified variables, introduced 16 case distinctions, treesize of input 204 treesize of output 663 [2022-11-20 12:08:22,885 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 100 treesize of output 92 [2022-11-20 12:08:29,337 INFO L217 Elim1Store]: Index analysis took 2149 ms [2022-11-20 12:08:36,106 WARN L233 SmtUtils]: Spent 5.98s on a formula simplification. DAG size of input: 299 DAG size of output: 70 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-20 12:08:36,107 INFO L321 Elim1Store]: treesize reduction 1394, result has 7.9 percent of original size [2022-11-20 12:08:36,108 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 4 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 57 case distinctions, treesize of input 853 treesize of output 1211