./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_priority_queue_push_ref_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743161bc-ac8e-474d-a5d8-317ad48e1d02/bin/uautomizer-QkZJyEgLgS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743161bc-ac8e-474d-a5d8-317ad48e1d02/bin/uautomizer-QkZJyEgLgS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743161bc-ac8e-474d-a5d8-317ad48e1d02/bin/uautomizer-QkZJyEgLgS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743161bc-ac8e-474d-a5d8-317ad48e1d02/bin/uautomizer-QkZJyEgLgS/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_priority_queue_push_ref_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743161bc-ac8e-474d-a5d8-317ad48e1d02/bin/uautomizer-QkZJyEgLgS/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743161bc-ac8e-474d-a5d8-317ad48e1d02/bin/uautomizer-QkZJyEgLgS --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 00eefb20b1e97d60d3c6a842acdb225be14d327e18edfa8146d29fe131145042 --- 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-4e7fbc6 [2022-11-23 03:21:49,968 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 03:21:49,971 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 03:21:50,003 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 03:21:50,004 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 03:21:50,005 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 03:21:50,007 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 03:21:50,009 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 03:21:50,011 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 03:21:50,013 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 03:21:50,014 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 03:21:50,015 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 03:21:50,016 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 03:21:50,017 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 03:21:50,019 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 03:21:50,020 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 03:21:50,021 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 03:21:50,023 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 03:21:50,025 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 03:21:50,027 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 03:21:50,029 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 03:21:50,036 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 03:21:50,038 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 03:21:50,039 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 03:21:50,050 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 03:21:50,051 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 03:21:50,051 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 03:21:50,052 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 03:21:50,053 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 03:21:50,056 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 03:21:50,057 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 03:21:50,058 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 03:21:50,060 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 03:21:50,061 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 03:21:50,064 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 03:21:50,064 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 03:21:50,065 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 03:21:50,065 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 03:21:50,066 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 03:21:50,068 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 03:21:50,069 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 03:21:50,070 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743161bc-ac8e-474d-a5d8-317ad48e1d02/bin/uautomizer-QkZJyEgLgS/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-23 03:21:50,116 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 03:21:50,122 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 03:21:50,123 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 03:21:50,123 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 03:21:50,124 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 03:21:50,124 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 03:21:50,125 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-23 03:21:50,126 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-23 03:21:50,126 INFO L138 SettingsManager]: * Use SBE=true [2022-11-23 03:21:50,126 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 03:21:50,127 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 03:21:50,128 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 03:21:50,128 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 03:21:50,128 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 03:21:50,128 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 03:21:50,129 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 03:21:50,129 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 03:21:50,129 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 03:21:50,129 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 03:21:50,130 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-23 03:21:50,130 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 03:21:50,130 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 03:21:50,130 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 03:21:50,131 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 03:21:50,131 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 03:21:50,131 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-23 03:21:50,131 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 03:21:50,132 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-23 03:21:50,132 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 03:21:50,133 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-23 03:21:50,133 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-23 03:21:50,133 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_743161bc-ac8e-474d-a5d8-317ad48e1d02/bin/uautomizer-QkZJyEgLgS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743161bc-ac8e-474d-a5d8-317ad48e1d02/bin/uautomizer-QkZJyEgLgS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 00eefb20b1e97d60d3c6a842acdb225be14d327e18edfa8146d29fe131145042 [2022-11-23 03:21:50,410 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 03:21:50,432 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 03:21:50,434 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 03:21:50,436 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 03:21:50,436 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 03:21:50,438 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743161bc-ac8e-474d-a5d8-317ad48e1d02/bin/uautomizer-QkZJyEgLgS/../../sv-benchmarks/c/aws-c-common/aws_priority_queue_push_ref_harness.i [2022-11-23 03:21:53,533 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 03:21:54,133 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 03:21:54,136 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743161bc-ac8e-474d-a5d8-317ad48e1d02/sv-benchmarks/c/aws-c-common/aws_priority_queue_push_ref_harness.i [2022-11-23 03:21:54,176 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743161bc-ac8e-474d-a5d8-317ad48e1d02/bin/uautomizer-QkZJyEgLgS/data/a40285f8c/6b0edc125600445a9a0fbba92c29ca58/FLAGb334f4b08 [2022-11-23 03:21:54,198 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743161bc-ac8e-474d-a5d8-317ad48e1d02/bin/uautomizer-QkZJyEgLgS/data/a40285f8c/6b0edc125600445a9a0fbba92c29ca58 [2022-11-23 03:21:54,202 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 03:21:54,204 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 03:21:54,206 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 03:21:54,207 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 03:21:54,211 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 03:21:54,211 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:21:54" (1/1) ... [2022-11-23 03:21:54,213 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34ec8e7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:21:54, skipping insertion in model container [2022-11-23 03:21:54,213 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:21:54" (1/1) ... [2022-11-23 03:21:54,222 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 03:21:54,334 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 03:21:54,610 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_743161bc-ac8e-474d-a5d8-317ad48e1d02/sv-benchmarks/c/aws-c-common/aws_priority_queue_push_ref_harness.i[4501,4514] [2022-11-23 03:21:54,621 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_743161bc-ac8e-474d-a5d8-317ad48e1d02/sv-benchmarks/c/aws-c-common/aws_priority_queue_push_ref_harness.i[4561,4574] [2022-11-23 03:21:55,845 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 03:21:55,846 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 03:21:55,846 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 03:21:55,847 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 03:21:55,848 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 03:21:55,862 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 03:21:55,863 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 03:21:55,865 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 03:21:55,865 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 03:21:55,870 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 03:21:55,873 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 03:21:55,873 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 03:21:55,874 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 03:21:56,326 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-23 03:21:56,327 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-23 03:21:56,328 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-23 03:21:56,330 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-23 03:21:56,331 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-23 03:21:56,332 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-23 03:21:56,332 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-23 03:21:56,333 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-23 03:21:56,334 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-23 03:21:56,335 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-23 03:21:56,501 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-23 03:21:56,531 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 03:21:56,548 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 03:21:56,643 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 03:21:56,644 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 03:21:56,645 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 03:21:56,645 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 03:21:56,645 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 03:21:56,646 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 03:21:56,646 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 03:21:56,647 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 03:21:56,648 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 03:21:56,648 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 03:21:56,648 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 03:21:56,649 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 03:21:56,649 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 03:21:56,652 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 03:21:56,652 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 03:21:56,653 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 03:21:56,653 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 03:21:56,656 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 03:21:56,657 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 03:21:56,664 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 03:21:56,665 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 03:21:56,665 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 03:21:56,678 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 03:21:56,705 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 03:21:56,718 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_743161bc-ac8e-474d-a5d8-317ad48e1d02/sv-benchmarks/c/aws-c-common/aws_priority_queue_push_ref_harness.i[4501,4514] [2022-11-23 03:21:56,719 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_743161bc-ac8e-474d-a5d8-317ad48e1d02/sv-benchmarks/c/aws-c-common/aws_priority_queue_push_ref_harness.i[4561,4574] [2022-11-23 03:21:56,752 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 03:21:56,753 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 03:21:56,753 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 03:21:56,754 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 03:21:56,754 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 03:21:56,760 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 03:21:56,760 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 03:21:56,761 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 03:21:56,762 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 03:21:56,763 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 03:21:56,763 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 03:21:56,764 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 03:21:56,764 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 03:21:56,793 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-23 03:21:56,794 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-23 03:21:56,795 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-23 03:21:56,796 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-23 03:21:56,796 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-23 03:21:56,797 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-23 03:21:56,798 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-23 03:21:56,798 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-23 03:21:56,799 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-23 03:21:56,799 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-23 03:21:56,819 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-23 03:21:56,832 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 03:21:56,842 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 03:21:56,887 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 03:21:56,888 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 03:21:56,888 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 03:21:56,889 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 03:21:56,889 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 03:21:56,889 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 03:21:56,890 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 03:21:56,891 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 03:21:56,891 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 03:21:56,892 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 03:21:56,892 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 03:21:56,893 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 03:21:56,893 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 03:21:56,894 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 03:21:56,895 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 03:21:56,895 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 03:21:56,895 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 03:21:56,900 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 03:21:56,902 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 03:21:56,914 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 03:21:56,915 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 03:21:56,916 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 03:21:56,934 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 03:21:57,213 INFO L208 MainTranslator]: Completed translation [2022-11-23 03:21:57,213 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:21:57 WrapperNode [2022-11-23 03:21:57,214 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 03:21:57,215 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 03:21:57,215 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 03:21:57,215 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 03:21:57,222 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:21:57" (1/1) ... [2022-11-23 03:21:57,312 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:21:57" (1/1) ... [2022-11-23 03:21:57,382 INFO L138 Inliner]: procedures = 697, calls = 1879, calls flagged for inlining = 58, calls inlined = 17, statements flattened = 1144 [2022-11-23 03:21:57,383 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 03:21:57,383 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 03:21:57,383 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 03:21:57,384 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 03:21:57,393 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:21:57" (1/1) ... [2022-11-23 03:21:57,393 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:21:57" (1/1) ... [2022-11-23 03:21:57,406 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:21:57" (1/1) ... [2022-11-23 03:21:57,407 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:21:57" (1/1) ... [2022-11-23 03:21:57,491 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:21:57" (1/1) ... [2022-11-23 03:21:57,497 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:21:57" (1/1) ... [2022-11-23 03:21:57,505 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:21:57" (1/1) ... [2022-11-23 03:21:57,511 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:21:57" (1/1) ... [2022-11-23 03:21:57,523 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 03:21:57,524 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 03:21:57,524 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 03:21:57,524 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 03:21:57,525 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:21:57" (1/1) ... [2022-11-23 03:21:57,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 03:21:57,544 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743161bc-ac8e-474d-a5d8-317ad48e1d02/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:21:57,558 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743161bc-ac8e-474d-a5d8-317ad48e1d02/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 03:21:57,568 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743161bc-ac8e-474d-a5d8-317ad48e1d02/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 03:21:57,603 INFO L130 BoogieDeclarations]: Found specification of procedure s_swap [2022-11-23 03:21:57,603 INFO L138 BoogieDeclarations]: Found implementation of procedure s_swap [2022-11-23 03:21:57,603 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_init_dynamic [2022-11-23 03:21:57,603 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_init_dynamic [2022-11-23 03:21:57,603 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2022-11-23 03:21:57,604 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2022-11-23 03:21:57,604 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 03:21:57,604 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2022-11-23 03:21:57,604 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2022-11-23 03:21:57,605 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2022-11-23 03:21:57,605 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2022-11-23 03:21:57,605 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-11-23 03:21:57,605 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-11-23 03:21:57,605 INFO L130 BoogieDeclarations]: Found specification of procedure aws_allocator_is_valid [2022-11-23 03:21:57,605 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_allocator_is_valid [2022-11-23 03:21:57,606 INFO L130 BoogieDeclarations]: Found specification of procedure s_sift_up [2022-11-23 03:21:57,606 INFO L138 BoogieDeclarations]: Found implementation of procedure s_sift_up [2022-11-23 03:21:57,606 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-23 03:21:57,607 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2022-11-23 03:21:57,607 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2022-11-23 03:21:57,610 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-23 03:21:57,611 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-23 03:21:57,611 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-23 03:21:57,611 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 03:21:57,611 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-23 03:21:57,611 INFO L130 BoogieDeclarations]: Found specification of procedure my_abort [2022-11-23 03:21:57,613 INFO L138 BoogieDeclarations]: Found implementation of procedure my_abort [2022-11-23 03:21:57,613 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2022-11-23 03:21:57,613 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2022-11-23 03:21:57,619 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 03:21:57,619 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 03:21:57,620 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-11-23 03:21:57,620 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-11-23 03:21:57,620 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2022-11-23 03:21:57,620 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2022-11-23 03:21:57,620 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2022-11-23 03:21:57,620 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2022-11-23 03:21:57,620 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_is_valid [2022-11-23 03:21:57,621 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_is_valid [2022-11-23 03:21:57,621 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_release [2022-11-23 03:21:57,621 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_release [2022-11-23 03:21:57,621 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2022-11-23 03:21:57,621 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2022-11-23 03:21:57,621 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-23 03:21:57,622 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-23 03:21:57,622 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-23 03:21:57,622 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-23 03:21:57,622 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2022-11-23 03:21:57,622 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2022-11-23 03:21:57,622 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_pop_back [2022-11-23 03:21:57,622 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_pop_back [2022-11-23 03:21:57,623 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_acquire [2022-11-23 03:21:57,623 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_acquire [2022-11-23 03:21:57,623 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 03:21:57,623 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2022-11-23 03:21:57,623 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2022-11-23 03:21:57,623 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-23 03:21:57,623 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-23 03:21:57,624 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_push_ref [2022-11-23 03:21:57,624 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_push_ref [2022-11-23 03:21:57,624 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_get_at_ptr [2022-11-23 03:21:57,624 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_get_at_ptr [2022-11-23 03:21:57,624 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2022-11-23 03:21:57,624 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2022-11-23 03:21:57,624 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2022-11-23 03:21:57,625 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2022-11-23 03:21:57,625 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2022-11-23 03:21:57,625 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2022-11-23 03:21:57,625 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-23 03:21:57,625 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2022-11-23 03:21:57,626 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2022-11-23 03:21:57,626 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_set_at [2022-11-23 03:21:57,626 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_set_at [2022-11-23 03:21:57,626 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_backpointer_index_valid [2022-11-23 03:21:57,627 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_backpointer_index_valid [2022-11-23 03:21:57,627 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-11-23 03:21:57,627 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-11-23 03:21:57,627 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 03:21:58,119 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 03:21:58,122 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 03:22:00,023 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 03:22:00,042 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 03:22:00,042 INFO L300 CfgBuilder]: Removed 5 assume(true) statements. [2022-11-23 03:22:00,047 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:22:00 BoogieIcfgContainer [2022-11-23 03:22:00,047 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 03:22:00,050 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 03:22:00,050 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 03:22:00,053 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 03:22:00,054 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:21:54" (1/3) ... [2022-11-23 03:22:00,056 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@641598db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:22:00, skipping insertion in model container [2022-11-23 03:22:00,056 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:21:57" (2/3) ... [2022-11-23 03:22:00,058 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@641598db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:22:00, skipping insertion in model container [2022-11-23 03:22:00,058 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:22:00" (3/3) ... [2022-11-23 03:22:00,061 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_priority_queue_push_ref_harness.i [2022-11-23 03:22:00,080 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 03:22:00,081 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-23 03:22:00,172 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 03:22:00,185 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;@1d3442ac, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 03:22:00,185 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-23 03:22:00,192 INFO L276 IsEmpty]: Start isEmpty. Operand has 533 states, 305 states have (on average 1.2459016393442623) internal successors, (380), 308 states have internal predecessors, (380), 193 states have call successors, (193), 33 states have call predecessors, (193), 33 states have return successors, (193), 193 states have call predecessors, (193), 193 states have call successors, (193) [2022-11-23 03:22:00,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-11-23 03:22:00,209 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:22:00,210 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:22:00,210 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:22:00,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:22:00,216 INFO L85 PathProgramCache]: Analyzing trace with hash -2094771320, now seen corresponding path program 1 times [2022-11-23 03:22:00,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:22:00,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155257712] [2022-11-23 03:22:00,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:22:00,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:22:00,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:22:01,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 03:22:01,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:22:01,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-23 03:22:01,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:22:01,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-23 03:22:01,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:22:01,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-23 03:22:01,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:22:01,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-23 03:22:01,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:22:01,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-23 03:22:01,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:22:01,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-23 03:22:01,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:22:01,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-23 03:22:01,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:22:01,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-23 03:22:01,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:22:01,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-23 03:22:01,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:22:01,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-23 03:22:01,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:22:01,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-23 03:22:01,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:22:01,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 03:22:01,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:22:01,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-23 03:22:01,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:22:01,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 03:22:01,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:22:01,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-11-23 03:22:01,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:22:01,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-11-23 03:22:01,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:22:01,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-11-23 03:22:01,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:22:01,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-23 03:22:01,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:22:01,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-11-23 03:22:01,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:22:01,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-11-23 03:22:01,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:22:01,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-11-23 03:22:01,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:22:01,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-11-23 03:22:01,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:22:01,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-11-23 03:22:01,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:22:01,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-11-23 03:22:01,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:22:01,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-11-23 03:22:01,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:22:01,848 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 257 trivial. 0 not checked. [2022-11-23 03:22:01,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:22:01,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155257712] [2022-11-23 03:22:01,849 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155257712] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 03:22:01,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1272950971] [2022-11-23 03:22:01,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:22:01,850 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:22:01,851 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743161bc-ac8e-474d-a5d8-317ad48e1d02/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:22:01,858 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743161bc-ac8e-474d-a5d8-317ad48e1d02/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 03:22:01,875 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743161bc-ac8e-474d-a5d8-317ad48e1d02/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 03:22:02,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:22:02,561 INFO L263 TraceCheckSpWp]: Trace formula consists of 2408 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-23 03:22:02,574 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:22:02,740 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 100 proven. 0 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2022-11-23 03:22:02,740 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 03:22:02,740 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1272950971] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:22:02,741 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 03:22:02,741 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2022-11-23 03:22:02,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091841740] [2022-11-23 03:22:02,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:22:02,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 03:22:02,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:22:02,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 03:22:02,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-11-23 03:22:02,803 INFO L87 Difference]: Start difference. First operand has 533 states, 305 states have (on average 1.2459016393442623) internal successors, (380), 308 states have internal predecessors, (380), 193 states have call successors, (193), 33 states have call predecessors, (193), 33 states have return successors, (193), 193 states have call predecessors, (193), 193 states have call successors, (193) Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 3 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2022-11-23 03:22:03,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:22:03,288 INFO L93 Difference]: Finished difference Result 1055 states and 1663 transitions. [2022-11-23 03:22:03,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 03:22:03,293 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 3 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) Word has length 162 [2022-11-23 03:22:03,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:22:03,320 INFO L225 Difference]: With dead ends: 1055 [2022-11-23 03:22:03,321 INFO L226 Difference]: Without dead ends: 528 [2022-11-23 03:22:03,333 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 207 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2022-11-23 03:22:03,339 INFO L413 NwaCegarLoop]: 713 mSDtfsCounter, 762 mSDsluCounter, 2078 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 778 SdHoareTripleChecker+Valid, 2791 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 03:22:03,343 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [778 Valid, 2791 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 03:22:03,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 528 states. [2022-11-23 03:22:03,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 528 to 528. [2022-11-23 03:22:03,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 528 states, 300 states have (on average 1.2266666666666666) internal successors, (368), 303 states have internal predecessors, (368), 193 states have call successors, (193), 33 states have call predecessors, (193), 33 states have return successors, (199), 191 states have call predecessors, (199), 191 states have call successors, (199) [2022-11-23 03:22:03,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 528 states to 528 states and 760 transitions. [2022-11-23 03:22:03,474 INFO L78 Accepts]: Start accepts. Automaton has 528 states and 760 transitions. Word has length 162 [2022-11-23 03:22:03,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:22:03,475 INFO L495 AbstractCegarLoop]: Abstraction has 528 states and 760 transitions. [2022-11-23 03:22:03,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 3 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2022-11-23 03:22:03,475 INFO L276 IsEmpty]: Start isEmpty. Operand 528 states and 760 transitions. [2022-11-23 03:22:03,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2022-11-23 03:22:03,487 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:22:03,487 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 4, 4, 4, 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] [2022-11-23 03:22:03,502 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743161bc-ac8e-474d-a5d8-317ad48e1d02/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-23 03:22:03,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743161bc-ac8e-474d-a5d8-317ad48e1d02/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-11-23 03:22:03,697 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:22:03,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:22:03,697 INFO L85 PathProgramCache]: Analyzing trace with hash 106032083, now seen corresponding path program 1 times [2022-11-23 03:22:03,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:22:03,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623471349] [2022-11-23 03:22:03,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:22:03,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:22:03,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:22:04,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 03:22:04,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:22:04,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-23 03:22:04,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:22:04,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-23 03:22:04,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:22:04,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-23 03:22:04,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:22:04,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-23 03:22:04,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:22:04,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-23 03:22:04,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:22:04,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-23 03:22:04,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:22:04,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-23 03:22:04,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:22:04,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-23 03:22:04,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:22:04,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-23 03:22:04,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:22:04,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 03:22:04,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:22:04,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-23 03:22:04,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:22:04,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-23 03:22:04,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:22:04,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 03:22:04,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:22:04,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-23 03:22:04,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:22:04,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 03:22:04,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:22:04,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-11-23 03:22:04,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:22:04,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-11-23 03:22:04,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:22:04,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-11-23 03:22:04,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:22:04,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-11-23 03:22:04,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:22:04,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-11-23 03:22:04,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:22:04,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-11-23 03:22:04,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:22:04,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-11-23 03:22:04,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:22:04,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-11-23 03:22:04,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:22:04,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-11-23 03:22:04,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:22:04,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-11-23 03:22:04,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:22:04,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-11-23 03:22:04,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:22:04,752 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2022-11-23 03:22:04,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:22:04,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623471349] [2022-11-23 03:22:04,753 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623471349] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 03:22:04,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [316110620] [2022-11-23 03:22:04,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:22:04,753 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:22:04,753 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743161bc-ac8e-474d-a5d8-317ad48e1d02/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:22:04,754 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743161bc-ac8e-474d-a5d8-317ad48e1d02/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 03:22:04,764 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743161bc-ac8e-474d-a5d8-317ad48e1d02/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-23 03:22:05,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:22:05,386 INFO L263 TraceCheckSpWp]: Trace formula consists of 2458 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-23 03:22:05,392 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:22:05,563 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2022-11-23 03:22:05,564 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 03:22:05,564 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [316110620] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:22:05,564 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 03:22:05,564 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 16 [2022-11-23 03:22:05,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916608905] [2022-11-23 03:22:05,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:22:05,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-23 03:22:05,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:22:05,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-23 03:22:05,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2022-11-23 03:22:05,567 INFO L87 Difference]: Start difference. First operand 528 states and 760 transitions. Second operand has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 4 states have call successors, (27), 2 states have call predecessors, (27), 4 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) [2022-11-23 03:22:06,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:22:06,275 INFO L93 Difference]: Finished difference Result 1044 states and 1544 transitions. [2022-11-23 03:22:06,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-23 03:22:06,276 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 4 states have call successors, (27), 2 states have call predecessors, (27), 4 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) Word has length 170 [2022-11-23 03:22:06,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:22:06,288 INFO L225 Difference]: With dead ends: 1044 [2022-11-23 03:22:06,288 INFO L226 Difference]: Without dead ends: 549 [2022-11-23 03:22:06,291 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=358, Unknown=0, NotChecked=0, Total=420 [2022-11-23 03:22:06,292 INFO L413 NwaCegarLoop]: 675 mSDtfsCounter, 798 mSDsluCounter, 3236 mSDsCounter, 0 mSdLazyCounter, 536 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 872 SdHoareTripleChecker+Valid, 3911 SdHoareTripleChecker+Invalid, 584 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 536 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-23 03:22:06,295 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [872 Valid, 3911 Invalid, 584 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 536 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-23 03:22:06,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 549 states. [2022-11-23 03:22:06,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 549 to 547. [2022-11-23 03:22:06,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 547 states, 316 states have (on average 1.2341772151898733) internal successors, (390), 319 states have internal predecessors, (390), 195 states have call successors, (195), 33 states have call predecessors, (195), 34 states have return successors, (233), 194 states have call predecessors, (233), 193 states have call successors, (233) [2022-11-23 03:22:06,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 818 transitions. [2022-11-23 03:22:06,340 INFO L78 Accepts]: Start accepts. Automaton has 547 states and 818 transitions. Word has length 170 [2022-11-23 03:22:06,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:22:06,341 INFO L495 AbstractCegarLoop]: Abstraction has 547 states and 818 transitions. [2022-11-23 03:22:06,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 4 states have call successors, (27), 2 states have call predecessors, (27), 4 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) [2022-11-23 03:22:06,341 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states and 818 transitions. [2022-11-23 03:22:06,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2022-11-23 03:22:06,344 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:22:06,344 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:22:06,355 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743161bc-ac8e-474d-a5d8-317ad48e1d02/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-23 03:22:06,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743161bc-ac8e-474d-a5d8-317ad48e1d02/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-11-23 03:22:06,554 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:22:06,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:22:06,554 INFO L85 PathProgramCache]: Analyzing trace with hash 38840048, now seen corresponding path program 1 times [2022-11-23 03:22:06,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:22:06,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356268580] [2022-11-23 03:22:06,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:22:06,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:22:06,657 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 03:22:06,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [325436944] [2022-11-23 03:22:06,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:22:06,660 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:22:06,661 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743161bc-ac8e-474d-a5d8-317ad48e1d02/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:22:06,662 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743161bc-ac8e-474d-a5d8-317ad48e1d02/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 03:22:06,674 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743161bc-ac8e-474d-a5d8-317ad48e1d02/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-23 03:22:07,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:22:07,332 INFO L263 TraceCheckSpWp]: Trace formula consists of 2599 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-23 03:22:07,338 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:22:07,431 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2022-11-23 03:22:07,431 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 03:22:07,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:22:07,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356268580] [2022-11-23 03:22:07,432 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 03:22:07,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [325436944] [2022-11-23 03:22:07,432 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [325436944] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:22:07,433 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:22:07,433 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-23 03:22:07,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111473287] [2022-11-23 03:22:07,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:22:07,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 03:22:07,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:22:07,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 03:22:07,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-23 03:22:07,435 INFO L87 Difference]: Start difference. First operand 547 states and 818 transitions. Second operand has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 4 states have call successors, (29), 2 states have call predecessors, (29), 3 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26) [2022-11-23 03:22:07,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:22:07,848 INFO L93 Difference]: Finished difference Result 1069 states and 1622 transitions. [2022-11-23 03:22:07,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-23 03:22:07,849 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 4 states have call successors, (29), 2 states have call predecessors, (29), 3 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26) Word has length 185 [2022-11-23 03:22:07,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:22:07,855 INFO L225 Difference]: With dead ends: 1069 [2022-11-23 03:22:07,856 INFO L226 Difference]: Without dead ends: 555 [2022-11-23 03:22:07,859 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2022-11-23 03:22:07,862 INFO L413 NwaCegarLoop]: 704 mSDtfsCounter, 781 mSDsluCounter, 2725 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 797 SdHoareTripleChecker+Valid, 3429 SdHoareTripleChecker+Invalid, 320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-23 03:22:07,863 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [797 Valid, 3429 Invalid, 320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 289 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-23 03:22:07,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2022-11-23 03:22:07,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 547. [2022-11-23 03:22:07,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 547 states, 316 states have (on average 1.2341772151898733) internal successors, (390), 319 states have internal predecessors, (390), 195 states have call successors, (195), 33 states have call predecessors, (195), 34 states have return successors, (233), 194 states have call predecessors, (233), 193 states have call successors, (233) [2022-11-23 03:22:07,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 818 transitions. [2022-11-23 03:22:07,913 INFO L78 Accepts]: Start accepts. Automaton has 547 states and 818 transitions. Word has length 185 [2022-11-23 03:22:07,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:22:07,916 INFO L495 AbstractCegarLoop]: Abstraction has 547 states and 818 transitions. [2022-11-23 03:22:07,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 4 states have call successors, (29), 2 states have call predecessors, (29), 3 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26) [2022-11-23 03:22:07,916 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states and 818 transitions. [2022-11-23 03:22:07,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2022-11-23 03:22:07,919 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:22:07,924 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 5, 5, 4, 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, 1, 1, 1, 1, 1] [2022-11-23 03:22:07,940 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743161bc-ac8e-474d-a5d8-317ad48e1d02/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-23 03:22:08,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743161bc-ac8e-474d-a5d8-317ad48e1d02/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:22:08,134 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:22:08,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:22:08,135 INFO L85 PathProgramCache]: Analyzing trace with hash -1666437482, now seen corresponding path program 1 times [2022-11-23 03:22:08,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:22:08,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157948872] [2022-11-23 03:22:08,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:22:08,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:22:08,256 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 03:22:08,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1339807168] [2022-11-23 03:22:08,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:22:08,257 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:22:08,257 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743161bc-ac8e-474d-a5d8-317ad48e1d02/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:22:08,263 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743161bc-ac8e-474d-a5d8-317ad48e1d02/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 03:22:08,268 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743161bc-ac8e-474d-a5d8-317ad48e1d02/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-23 03:22:08,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:22:08,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 2671 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-23 03:22:08,932 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:22:09,075 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 127 proven. 0 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2022-11-23 03:22:09,075 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 03:22:09,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:22:09,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157948872] [2022-11-23 03:22:09,076 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 03:22:09,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1339807168] [2022-11-23 03:22:09,076 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1339807168] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:22:09,076 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:22:09,077 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-23 03:22:09,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038924309] [2022-11-23 03:22:09,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:22:09,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-23 03:22:09,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:22:09,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-23 03:22:09,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-23 03:22:09,079 INFO L87 Difference]: Start difference. First operand 547 states and 818 transitions. Second operand has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 5 states have call successors, (30), 2 states have call predecessors, (30), 4 states have return successors, (27), 5 states have call predecessors, (27), 5 states have call successors, (27) [2022-11-23 03:22:09,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:22:09,893 INFO L93 Difference]: Finished difference Result 1079 states and 1631 transitions. [2022-11-23 03:22:09,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-23 03:22:09,894 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 5 states have call successors, (30), 2 states have call predecessors, (30), 4 states have return successors, (27), 5 states have call predecessors, (27), 5 states have call successors, (27) Word has length 201 [2022-11-23 03:22:09,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:22:09,900 INFO L225 Difference]: With dead ends: 1079 [2022-11-23 03:22:09,900 INFO L226 Difference]: Without dead ends: 565 [2022-11-23 03:22:09,906 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2022-11-23 03:22:09,910 INFO L413 NwaCegarLoop]: 668 mSDtfsCounter, 831 mSDsluCounter, 3839 mSDsCounter, 0 mSdLazyCounter, 723 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 905 SdHoareTripleChecker+Valid, 4507 SdHoareTripleChecker+Invalid, 776 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 723 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-23 03:22:09,911 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [905 Valid, 4507 Invalid, 776 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 723 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-23 03:22:09,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 565 states. [2022-11-23 03:22:09,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 565 to 547. [2022-11-23 03:22:09,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 547 states, 316 states have (on average 1.2341772151898733) internal successors, (390), 319 states have internal predecessors, (390), 195 states have call successors, (195), 33 states have call predecessors, (195), 34 states have return successors, (233), 194 states have call predecessors, (233), 193 states have call successors, (233) [2022-11-23 03:22:09,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 818 transitions. [2022-11-23 03:22:09,980 INFO L78 Accepts]: Start accepts. Automaton has 547 states and 818 transitions. Word has length 201 [2022-11-23 03:22:09,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:22:09,980 INFO L495 AbstractCegarLoop]: Abstraction has 547 states and 818 transitions. [2022-11-23 03:22:09,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 5 states have call successors, (30), 2 states have call predecessors, (30), 4 states have return successors, (27), 5 states have call predecessors, (27), 5 states have call successors, (27) [2022-11-23 03:22:09,981 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states and 818 transitions. [2022-11-23 03:22:09,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2022-11-23 03:22:09,984 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:22:09,984 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 5, 5, 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, 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] [2022-11-23 03:22:10,000 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743161bc-ac8e-474d-a5d8-317ad48e1d02/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-23 03:22:10,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743161bc-ac8e-474d-a5d8-317ad48e1d02/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:22:10,200 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:22:10,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:22:10,201 INFO L85 PathProgramCache]: Analyzing trace with hash -1077329093, now seen corresponding path program 2 times [2022-11-23 03:22:10,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:22:10,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081202899] [2022-11-23 03:22:10,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:22:10,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:22:10,285 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 03:22:10,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [835957682] [2022-11-23 03:22:10,285 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-23 03:22:10,285 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:22:10,286 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743161bc-ac8e-474d-a5d8-317ad48e1d02/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:22:10,287 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743161bc-ac8e-474d-a5d8-317ad48e1d02/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 03:22:10,311 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743161bc-ac8e-474d-a5d8-317ad48e1d02/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-23 03:22:11,072 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-23 03:22:11,072 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 03:22:11,083 INFO L263 TraceCheckSpWp]: Trace formula consists of 2812 conjuncts, 35 conjunts are in the unsatisfiable core [2022-11-23 03:22:11,090 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:22:11,160 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 9 treesize of output 3 [2022-11-23 03:22:11,165 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2022-11-23 03:22:11,310 INFO L321 Elim1Store]: treesize reduction 40, result has 50.6 percent of original size [2022-11-23 03:22:11,310 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 11 select indices, 11 select index equivalence classes, 45 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 10 case distinctions, treesize of input 56 treesize of output 74 [2022-11-23 03:22:12,061 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2022-11-23 03:22:12,181 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 147 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2022-11-23 03:22:12,181 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 03:22:12,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:22:12,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081202899] [2022-11-23 03:22:12,182 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 03:22:12,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [835957682] [2022-11-23 03:22:12,182 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [835957682] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:22:12,182 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:22:12,182 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-23 03:22:12,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030560049] [2022-11-23 03:22:12,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:22:12,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-23 03:22:12,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:22:12,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-23 03:22:12,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-23 03:22:12,184 INFO L87 Difference]: Start difference. First operand 547 states and 818 transitions. Second operand has 8 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 4 states have call successors, (30), 3 states have call predecessors, (30), 3 states have return successors, (27), 3 states have call predecessors, (27), 4 states have call successors, (27) [2022-11-23 03:22:12,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:22:12,884 INFO L93 Difference]: Finished difference Result 1124 states and 1666 transitions. [2022-11-23 03:22:12,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-23 03:22:12,885 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 4 states have call successors, (30), 3 states have call predecessors, (30), 3 states have return successors, (27), 3 states have call predecessors, (27), 4 states have call successors, (27) Word has length 216 [2022-11-23 03:22:12,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:22:12,889 INFO L225 Difference]: With dead ends: 1124 [2022-11-23 03:22:12,890 INFO L226 Difference]: Without dead ends: 592 [2022-11-23 03:22:12,893 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2022-11-23 03:22:12,894 INFO L413 NwaCegarLoop]: 747 mSDtfsCounter, 245 mSDsluCounter, 4101 mSDsCounter, 0 mSdLazyCounter, 334 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 250 SdHoareTripleChecker+Valid, 4848 SdHoareTripleChecker+Invalid, 411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-23 03:22:12,894 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [250 Valid, 4848 Invalid, 411 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 334 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-23 03:22:12,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 592 states. [2022-11-23 03:22:12,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 592 to 585. [2022-11-23 03:22:12,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 585 states, 341 states have (on average 1.219941348973607) internal successors, (416), 345 states have internal predecessors, (416), 200 states have call successors, (200), 42 states have call predecessors, (200), 42 states have return successors, (242), 197 states have call predecessors, (242), 198 states have call successors, (242) [2022-11-23 03:22:12,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585 states to 585 states and 858 transitions. [2022-11-23 03:22:12,963 INFO L78 Accepts]: Start accepts. Automaton has 585 states and 858 transitions. Word has length 216 [2022-11-23 03:22:12,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:22:12,965 INFO L495 AbstractCegarLoop]: Abstraction has 585 states and 858 transitions. [2022-11-23 03:22:12,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 4 states have call successors, (30), 3 states have call predecessors, (30), 3 states have return successors, (27), 3 states have call predecessors, (27), 4 states have call successors, (27) [2022-11-23 03:22:12,965 INFO L276 IsEmpty]: Start isEmpty. Operand 585 states and 858 transitions. [2022-11-23 03:22:12,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2022-11-23 03:22:12,970 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:22:12,970 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 6, 6, 4, 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, 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] [2022-11-23 03:22:12,988 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743161bc-ac8e-474d-a5d8-317ad48e1d02/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-11-23 03:22:13,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743161bc-ac8e-474d-a5d8-317ad48e1d02/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:22:13,182 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:22:13,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:22:13,183 INFO L85 PathProgramCache]: Analyzing trace with hash -1467473338, now seen corresponding path program 1 times [2022-11-23 03:22:13,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:22:13,183 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768480527] [2022-11-23 03:22:13,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:22:13,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:22:13,280 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 03:22:13,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [862295670] [2022-11-23 03:22:13,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:22:13,280 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:22:13,280 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743161bc-ac8e-474d-a5d8-317ad48e1d02/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:22:13,282 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743161bc-ac8e-474d-a5d8-317ad48e1d02/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 03:22:13,309 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743161bc-ac8e-474d-a5d8-317ad48e1d02/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-23 03:22:13,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:22:13,960 INFO L263 TraceCheckSpWp]: Trace formula consists of 2862 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-23 03:22:13,966 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:22:14,103 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 169 proven. 0 refuted. 0 times theorem prover too weak. 158 trivial. 0 not checked. [2022-11-23 03:22:14,103 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 03:22:14,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:22:14,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768480527] [2022-11-23 03:22:14,104 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 03:22:14,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [862295670] [2022-11-23 03:22:14,104 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [862295670] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:22:14,104 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:22:14,104 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-23 03:22:14,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475406684] [2022-11-23 03:22:14,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:22:14,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-23 03:22:14,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:22:14,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-23 03:22:14,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-23 03:22:14,106 INFO L87 Difference]: Start difference. First operand 585 states and 858 transitions. Second operand has 10 states, 9 states have (on average 10.222222222222221) internal successors, (92), 9 states have internal predecessors, (92), 5 states have call successors, (31), 3 states have call predecessors, (31), 4 states have return successors, (28), 4 states have call predecessors, (28), 5 states have call successors, (28) [2022-11-23 03:22:15,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:22:15,171 INFO L93 Difference]: Finished difference Result 1105 states and 1646 transitions. [2022-11-23 03:22:15,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-23 03:22:15,172 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 10.222222222222221) internal successors, (92), 9 states have internal predecessors, (92), 5 states have call successors, (31), 3 states have call predecessors, (31), 4 states have return successors, (28), 4 states have call predecessors, (28), 5 states have call successors, (28) Word has length 224 [2022-11-23 03:22:15,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:22:15,178 INFO L225 Difference]: With dead ends: 1105 [2022-11-23 03:22:15,178 INFO L226 Difference]: Without dead ends: 601 [2022-11-23 03:22:15,182 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 219 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2022-11-23 03:22:15,183 INFO L413 NwaCegarLoop]: 671 mSDtfsCounter, 819 mSDsluCounter, 4351 mSDsCounter, 0 mSdLazyCounter, 930 mSolverCounterSat, 142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 879 SdHoareTripleChecker+Valid, 5022 SdHoareTripleChecker+Invalid, 1072 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 930 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-23 03:22:15,183 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [879 Valid, 5022 Invalid, 1072 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [142 Valid, 930 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-23 03:22:15,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 601 states. [2022-11-23 03:22:15,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 601 to 599. [2022-11-23 03:22:15,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 599 states, 354 states have (on average 1.2259887005649717) internal successors, (434), 357 states have internal predecessors, (434), 201 states have call successors, (201), 42 states have call predecessors, (201), 42 states have return successors, (243), 199 states have call predecessors, (243), 199 states have call successors, (243) [2022-11-23 03:22:15,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 878 transitions. [2022-11-23 03:22:15,248 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 878 transitions. Word has length 224 [2022-11-23 03:22:15,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:22:15,248 INFO L495 AbstractCegarLoop]: Abstraction has 599 states and 878 transitions. [2022-11-23 03:22:15,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 10.222222222222221) internal successors, (92), 9 states have internal predecessors, (92), 5 states have call successors, (31), 3 states have call predecessors, (31), 4 states have return successors, (28), 4 states have call predecessors, (28), 5 states have call successors, (28) [2022-11-23 03:22:15,249 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 878 transitions. [2022-11-23 03:22:15,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2022-11-23 03:22:15,253 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:22:15,254 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 6, 6, 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, 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] [2022-11-23 03:22:15,272 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743161bc-ac8e-474d-a5d8-317ad48e1d02/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-23 03:22:15,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743161bc-ac8e-474d-a5d8-317ad48e1d02/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-23 03:22:15,465 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:22:15,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:22:15,467 INFO L85 PathProgramCache]: Analyzing trace with hash -107893323, now seen corresponding path program 2 times [2022-11-23 03:22:15,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:22:15,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468622144] [2022-11-23 03:22:15,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:22:15,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:22:15,566 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 03:22:15,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [95950844] [2022-11-23 03:22:15,566 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-23 03:22:15,567 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:22:15,567 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743161bc-ac8e-474d-a5d8-317ad48e1d02/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:22:15,568 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743161bc-ac8e-474d-a5d8-317ad48e1d02/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 03:22:15,571 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743161bc-ac8e-474d-a5d8-317ad48e1d02/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-23 03:22:16,329 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-23 03:22:16,329 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 03:22:16,342 INFO L263 TraceCheckSpWp]: Trace formula consists of 3003 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-23 03:22:16,349 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:22:16,475 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 163 proven. 0 refuted. 0 times theorem prover too weak. 194 trivial. 0 not checked. [2022-11-23 03:22:16,476 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 03:22:16,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:22:16,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468622144] [2022-11-23 03:22:16,476 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 03:22:16,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [95950844] [2022-11-23 03:22:16,477 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [95950844] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:22:16,477 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:22:16,477 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-23 03:22:16,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619870739] [2022-11-23 03:22:16,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:22:16,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-23 03:22:16,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:22:16,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-23 03:22:16,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-23 03:22:16,479 INFO L87 Difference]: Start difference. First operand 599 states and 878 transitions. Second operand has 9 states, 8 states have (on average 11.125) internal successors, (89), 8 states have internal predecessors, (89), 5 states have call successors, (31), 3 states have call predecessors, (31), 3 states have return successors, (28), 4 states have call predecessors, (28), 5 states have call successors, (28) [2022-11-23 03:22:17,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:22:17,198 INFO L93 Difference]: Finished difference Result 1125 states and 1678 transitions. [2022-11-23 03:22:17,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-23 03:22:17,199 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 11.125) internal successors, (89), 8 states have internal predecessors, (89), 5 states have call successors, (31), 3 states have call predecessors, (31), 3 states have return successors, (28), 4 states have call predecessors, (28), 5 states have call successors, (28) Word has length 239 [2022-11-23 03:22:17,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:22:17,203 INFO L225 Difference]: With dead ends: 1125 [2022-11-23 03:22:17,204 INFO L226 Difference]: Without dead ends: 607 [2022-11-23 03:22:17,207 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 234 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2022-11-23 03:22:17,208 INFO L413 NwaCegarLoop]: 673 mSDtfsCounter, 848 mSDsluCounter, 3798 mSDsCounter, 0 mSdLazyCounter, 578 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 856 SdHoareTripleChecker+Valid, 4471 SdHoareTripleChecker+Invalid, 695 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 578 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-23 03:22:17,208 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [856 Valid, 4471 Invalid, 695 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 578 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-23 03:22:17,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 607 states. [2022-11-23 03:22:17,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 607 to 599. [2022-11-23 03:22:17,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 599 states, 354 states have (on average 1.2259887005649717) internal successors, (434), 357 states have internal predecessors, (434), 201 states have call successors, (201), 42 states have call predecessors, (201), 42 states have return successors, (243), 199 states have call predecessors, (243), 199 states have call successors, (243) [2022-11-23 03:22:17,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 878 transitions. [2022-11-23 03:22:17,253 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 878 transitions. Word has length 239 [2022-11-23 03:22:17,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:22:17,254 INFO L495 AbstractCegarLoop]: Abstraction has 599 states and 878 transitions. [2022-11-23 03:22:17,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 11.125) internal successors, (89), 8 states have internal predecessors, (89), 5 states have call successors, (31), 3 states have call predecessors, (31), 3 states have return successors, (28), 4 states have call predecessors, (28), 5 states have call successors, (28) [2022-11-23 03:22:17,255 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 878 transitions. [2022-11-23 03:22:17,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2022-11-23 03:22:17,258 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:22:17,259 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 7, 7, 4, 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, 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] [2022-11-23 03:22:17,280 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743161bc-ac8e-474d-a5d8-317ad48e1d02/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-23 03:22:17,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743161bc-ac8e-474d-a5d8-317ad48e1d02/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:22:17,470 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:22:17,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:22:17,471 INFO L85 PathProgramCache]: Analyzing trace with hash -1070779685, now seen corresponding path program 1 times [2022-11-23 03:22:17,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:22:17,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148975789] [2022-11-23 03:22:17,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:22:17,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:22:17,572 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 03:22:17,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [381978955] [2022-11-23 03:22:17,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:22:17,573 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:22:17,573 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743161bc-ac8e-474d-a5d8-317ad48e1d02/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:22:17,574 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743161bc-ac8e-474d-a5d8-317ad48e1d02/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 03:22:17,608 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743161bc-ac8e-474d-a5d8-317ad48e1d02/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-23 03:22:18,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:22:18,346 INFO L263 TraceCheckSpWp]: Trace formula consists of 3075 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-23 03:22:18,353 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:22:18,503 INFO L134 CoverageAnalysis]: Checked inductivity of 393 backedges. 196 proven. 0 refuted. 0 times theorem prover too weak. 197 trivial. 0 not checked. [2022-11-23 03:22:18,504 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 03:22:18,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:22:18,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148975789] [2022-11-23 03:22:18,504 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 03:22:18,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [381978955] [2022-11-23 03:22:18,505 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [381978955] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:22:18,505 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:22:18,505 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-23 03:22:18,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055283517] [2022-11-23 03:22:18,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:22:18,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-23 03:22:18,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:22:18,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-23 03:22:18,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-11-23 03:22:18,507 INFO L87 Difference]: Start difference. First operand 599 states and 878 transitions. Second operand has 11 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 6 states have call successors, (32), 3 states have call predecessors, (32), 4 states have return successors, (29), 5 states have call predecessors, (29), 6 states have call successors, (29) [2022-11-23 03:22:19,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:22:19,757 INFO L93 Difference]: Finished difference Result 1119 states and 1662 transitions. [2022-11-23 03:22:19,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-23 03:22:19,758 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 6 states have call successors, (32), 3 states have call predecessors, (32), 4 states have return successors, (29), 5 states have call predecessors, (29), 6 states have call successors, (29) Word has length 255 [2022-11-23 03:22:19,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:22:19,764 INFO L225 Difference]: With dead ends: 1119 [2022-11-23 03:22:19,764 INFO L226 Difference]: Without dead ends: 601 [2022-11-23 03:22:19,769 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 250 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2022-11-23 03:22:19,771 INFO L413 NwaCegarLoop]: 642 mSDtfsCounter, 888 mSDsluCounter, 4786 mSDsCounter, 0 mSdLazyCounter, 1168 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 948 SdHoareTripleChecker+Valid, 5428 SdHoareTripleChecker+Invalid, 1317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 1168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-23 03:22:19,771 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [948 Valid, 5428 Invalid, 1317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [149 Valid, 1168 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-23 03:22:19,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 601 states. [2022-11-23 03:22:19,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 601 to 583. [2022-11-23 03:22:19,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 583 states, 340 states have (on average 1.2205882352941178) internal successors, (415), 343 states have internal predecessors, (415), 200 states have call successors, (200), 42 states have call predecessors, (200), 41 states have return successors, (234), 197 states have call predecessors, (234), 198 states have call successors, (234) [2022-11-23 03:22:19,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 583 states to 583 states and 849 transitions. [2022-11-23 03:22:19,826 INFO L78 Accepts]: Start accepts. Automaton has 583 states and 849 transitions. Word has length 255 [2022-11-23 03:22:19,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:22:19,831 INFO L495 AbstractCegarLoop]: Abstraction has 583 states and 849 transitions. [2022-11-23 03:22:19,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 6 states have call successors, (32), 3 states have call predecessors, (32), 4 states have return successors, (29), 5 states have call predecessors, (29), 6 states have call successors, (29) [2022-11-23 03:22:19,831 INFO L276 IsEmpty]: Start isEmpty. Operand 583 states and 849 transitions. [2022-11-23 03:22:19,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2022-11-23 03:22:19,836 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:22:19,836 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2022-11-23 03:22:19,856 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743161bc-ac8e-474d-a5d8-317ad48e1d02/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-23 03:22:20,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743161bc-ac8e-474d-a5d8-317ad48e1d02/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:22:20,049 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:22:20,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:22:20,049 INFO L85 PathProgramCache]: Analyzing trace with hash -2073139346, now seen corresponding path program 2 times [2022-11-23 03:22:20,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:22:20,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264071578] [2022-11-23 03:22:20,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:22:20,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:22:20,132 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 03:22:20,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1399582538] [2022-11-23 03:22:20,133 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-23 03:22:20,133 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:22:20,133 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743161bc-ac8e-474d-a5d8-317ad48e1d02/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:22:20,134 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743161bc-ac8e-474d-a5d8-317ad48e1d02/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 03:22:20,159 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743161bc-ac8e-474d-a5d8-317ad48e1d02/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-23 03:22:21,105 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-23 03:22:21,105 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 03:22:21,117 INFO L263 TraceCheckSpWp]: Trace formula consists of 3216 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-23 03:22:21,125 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:22:21,136 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 9 treesize of output 3 [2022-11-23 03:22:21,171 INFO L321 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2022-11-23 03:22:21,171 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 21 treesize of output 25 [2022-11-23 03:22:21,441 INFO L134 CoverageAnalysis]: Checked inductivity of 438 backedges. 164 proven. 0 refuted. 0 times theorem prover too weak. 274 trivial. 0 not checked. [2022-11-23 03:22:21,441 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 03:22:21,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:22:21,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264071578] [2022-11-23 03:22:21,442 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 03:22:21,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1399582538] [2022-11-23 03:22:21,442 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1399582538] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:22:21,442 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:22:21,442 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-23 03:22:21,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726931153] [2022-11-23 03:22:21,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:22:21,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-23 03:22:21,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:22:21,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-23 03:22:21,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-23 03:22:21,444 INFO L87 Difference]: Start difference. First operand 583 states and 849 transitions. Second operand has 9 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 5 states have call successors, (30), 3 states have call predecessors, (30), 3 states have return successors, (27), 4 states have call predecessors, (27), 5 states have call successors, (27) [2022-11-23 03:22:22,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:22:22,277 INFO L93 Difference]: Finished difference Result 1086 states and 1599 transitions. [2022-11-23 03:22:22,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-23 03:22:22,278 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 5 states have call successors, (30), 3 states have call predecessors, (30), 3 states have return successors, (27), 4 states have call predecessors, (27), 5 states have call successors, (27) Word has length 270 [2022-11-23 03:22:22,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:22:22,283 INFO L225 Difference]: With dead ends: 1086 [2022-11-23 03:22:22,283 INFO L226 Difference]: Without dead ends: 590 [2022-11-23 03:22:22,286 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 264 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2022-11-23 03:22:22,287 INFO L413 NwaCegarLoop]: 696 mSDtfsCounter, 243 mSDsluCounter, 4398 mSDsCounter, 0 mSdLazyCounter, 641 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 5094 SdHoareTripleChecker+Invalid, 733 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 641 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-23 03:22:22,287 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [246 Valid, 5094 Invalid, 733 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 641 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-23 03:22:22,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 590 states. [2022-11-23 03:22:22,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 590 to 583. [2022-11-23 03:22:22,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 583 states, 340 states have (on average 1.2205882352941178) internal successors, (415), 343 states have internal predecessors, (415), 200 states have call successors, (200), 42 states have call predecessors, (200), 41 states have return successors, (231), 197 states have call predecessors, (231), 198 states have call successors, (231) [2022-11-23 03:22:22,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 583 states to 583 states and 846 transitions. [2022-11-23 03:22:22,329 INFO L78 Accepts]: Start accepts. Automaton has 583 states and 846 transitions. Word has length 270 [2022-11-23 03:22:22,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:22:22,330 INFO L495 AbstractCegarLoop]: Abstraction has 583 states and 846 transitions. [2022-11-23 03:22:22,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 5 states have call successors, (30), 3 states have call predecessors, (30), 3 states have return successors, (27), 4 states have call predecessors, (27), 5 states have call successors, (27) [2022-11-23 03:22:22,330 INFO L276 IsEmpty]: Start isEmpty. Operand 583 states and 846 transitions. [2022-11-23 03:22:22,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2022-11-23 03:22:22,333 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:22:22,333 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 7, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2022-11-23 03:22:22,352 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743161bc-ac8e-474d-a5d8-317ad48e1d02/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-23 03:22:22,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743161bc-ac8e-474d-a5d8-317ad48e1d02/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:22:22,552 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:22:22,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:22:22,553 INFO L85 PathProgramCache]: Analyzing trace with hash -750298113, now seen corresponding path program 3 times [2022-11-23 03:22:22,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:22:22,553 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692763805] [2022-11-23 03:22:22,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:22:22,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:22:22,646 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 03:22:22,647 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1158329504] [2022-11-23 03:22:22,647 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-23 03:22:22,647 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:22:22,647 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743161bc-ac8e-474d-a5d8-317ad48e1d02/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:22:22,648 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743161bc-ac8e-474d-a5d8-317ad48e1d02/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 03:22:22,664 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743161bc-ac8e-474d-a5d8-317ad48e1d02/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-23 03:22:23,242 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-23 03:22:23,243 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 03:22:23,250 INFO L263 TraceCheckSpWp]: Trace formula consists of 1885 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-23 03:22:23,266 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:22:23,312 INFO L134 CoverageAnalysis]: Checked inductivity of 498 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 434 trivial. 0 not checked. [2022-11-23 03:22:23,313 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 03:22:23,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:22:23,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692763805] [2022-11-23 03:22:23,313 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 03:22:23,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1158329504] [2022-11-23 03:22:23,313 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1158329504] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:22:23,314 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:22:23,314 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-23 03:22:23,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207465130] [2022-11-23 03:22:23,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:22:23,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 03:22:23,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:22:23,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 03:22:23,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-23 03:22:23,318 INFO L87 Difference]: Start difference. First operand 583 states and 846 transitions. Second operand has 6 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 3 states have call successors, (30), 2 states have call predecessors, (30), 4 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2022-11-23 03:22:23,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:22:23,744 INFO L93 Difference]: Finished difference Result 1074 states and 1592 transitions. [2022-11-23 03:22:23,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 03:22:23,744 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 3 states have call successors, (30), 2 states have call predecessors, (30), 4 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) Word has length 285 [2022-11-23 03:22:23,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:22:23,750 INFO L225 Difference]: With dead ends: 1074 [2022-11-23 03:22:23,750 INFO L226 Difference]: Without dead ends: 583 [2022-11-23 03:22:23,753 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 280 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-23 03:22:23,754 INFO L413 NwaCegarLoop]: 710 mSDtfsCounter, 2 mSDsluCounter, 2718 mSDsCounter, 0 mSdLazyCounter, 330 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 3428 SdHoareTripleChecker+Invalid, 330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-23 03:22:23,755 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 3428 Invalid, 330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 330 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-23 03:22:23,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 583 states. [2022-11-23 03:22:23,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 583 to 583. [2022-11-23 03:22:23,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 583 states, 340 states have (on average 1.2205882352941178) internal successors, (415), 343 states have internal predecessors, (415), 200 states have call successors, (200), 42 states have call predecessors, (200), 41 states have return successors, (230), 197 states have call predecessors, (230), 198 states have call successors, (230) [2022-11-23 03:22:23,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 583 states to 583 states and 845 transitions. [2022-11-23 03:22:23,810 INFO L78 Accepts]: Start accepts. Automaton has 583 states and 845 transitions. Word has length 285 [2022-11-23 03:22:23,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:22:23,810 INFO L495 AbstractCegarLoop]: Abstraction has 583 states and 845 transitions. [2022-11-23 03:22:23,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 3 states have call successors, (30), 2 states have call predecessors, (30), 4 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2022-11-23 03:22:23,811 INFO L276 IsEmpty]: Start isEmpty. Operand 583 states and 845 transitions. [2022-11-23 03:22:23,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2022-11-23 03:22:23,815 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:22:23,815 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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] [2022-11-23 03:22:23,827 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743161bc-ac8e-474d-a5d8-317ad48e1d02/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-23 03:22:24,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743161bc-ac8e-474d-a5d8-317ad48e1d02/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:22:24,024 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:22:24,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:22:24,025 INFO L85 PathProgramCache]: Analyzing trace with hash 1009875168, now seen corresponding path program 4 times [2022-11-23 03:22:24,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:22:24,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082045662] [2022-11-23 03:22:24,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:22:24,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:22:24,146 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 03:22:24,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1813448495] [2022-11-23 03:22:24,147 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-23 03:22:24,147 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:22:24,147 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743161bc-ac8e-474d-a5d8-317ad48e1d02/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:22:24,148 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743161bc-ac8e-474d-a5d8-317ad48e1d02/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 03:22:24,156 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743161bc-ac8e-474d-a5d8-317ad48e1d02/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-23 03:22:25,038 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-23 03:22:25,038 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 03:22:25,054 INFO L263 TraceCheckSpWp]: Trace formula consists of 3498 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-23 03:22:25,061 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:22:25,206 INFO L134 CoverageAnalysis]: Checked inductivity of 573 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 555 trivial. 0 not checked. [2022-11-23 03:22:25,206 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 03:22:25,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:22:25,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082045662] [2022-11-23 03:22:25,207 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 03:22:25,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1813448495] [2022-11-23 03:22:25,207 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1813448495] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:22:25,207 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:22:25,207 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-23 03:22:25,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325620749] [2022-11-23 03:22:25,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:22:25,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-23 03:22:25,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:22:25,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-23 03:22:25,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-11-23 03:22:25,209 INFO L87 Difference]: Start difference. First operand 583 states and 845 transitions. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 9 states have internal predecessors, (80), 6 states have call successors, (30), 4 states have call predecessors, (30), 2 states have return successors, (27), 6 states have call predecessors, (27), 5 states have call successors, (27) [2022-11-23 03:22:26,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:22:26,186 INFO L93 Difference]: Finished difference Result 1085 states and 1593 transitions. [2022-11-23 03:22:26,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-23 03:22:26,186 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 9 states have internal predecessors, (80), 6 states have call successors, (30), 4 states have call predecessors, (30), 2 states have return successors, (27), 6 states have call predecessors, (27), 5 states have call successors, (27) Word has length 300 [2022-11-23 03:22:26,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:22:26,192 INFO L225 Difference]: With dead ends: 1085 [2022-11-23 03:22:26,192 INFO L226 Difference]: Without dead ends: 595 [2022-11-23 03:22:26,195 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 309 GetRequests, 292 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2022-11-23 03:22:26,196 INFO L413 NwaCegarLoop]: 651 mSDtfsCounter, 847 mSDsluCounter, 4845 mSDsCounter, 0 mSdLazyCounter, 1041 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 901 SdHoareTripleChecker+Valid, 5496 SdHoareTripleChecker+Invalid, 1184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 1041 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-23 03:22:26,196 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [901 Valid, 5496 Invalid, 1184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [143 Valid, 1041 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-23 03:22:26,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 595 states. [2022-11-23 03:22:26,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 595 to 595. [2022-11-23 03:22:26,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 595 states, 346 states have (on average 1.2196531791907514) internal successors, (422), 349 states have internal predecessors, (422), 205 states have call successors, (205), 43 states have call predecessors, (205), 42 states have return successors, (235), 202 states have call predecessors, (235), 203 states have call successors, (235) [2022-11-23 03:22:26,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 595 states to 595 states and 862 transitions. [2022-11-23 03:22:26,242 INFO L78 Accepts]: Start accepts. Automaton has 595 states and 862 transitions. Word has length 300 [2022-11-23 03:22:26,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:22:26,243 INFO L495 AbstractCegarLoop]: Abstraction has 595 states and 862 transitions. [2022-11-23 03:22:26,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 9 states have internal predecessors, (80), 6 states have call successors, (30), 4 states have call predecessors, (30), 2 states have return successors, (27), 6 states have call predecessors, (27), 5 states have call successors, (27) [2022-11-23 03:22:26,244 INFO L276 IsEmpty]: Start isEmpty. Operand 595 states and 862 transitions. [2022-11-23 03:22:26,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2022-11-23 03:22:26,246 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:22:26,246 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 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] [2022-11-23 03:22:26,268 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743161bc-ac8e-474d-a5d8-317ad48e1d02/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-23 03:22:26,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743161bc-ac8e-474d-a5d8-317ad48e1d02/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-23 03:22:26,464 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:22:26,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:22:26,464 INFO L85 PathProgramCache]: Analyzing trace with hash 99374671, now seen corresponding path program 1 times [2022-11-23 03:22:26,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:22:26,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116173910] [2022-11-23 03:22:26,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:22:26,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:22:26,561 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 03:22:26,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1478994304] [2022-11-23 03:22:26,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:22:26,562 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:22:26,562 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743161bc-ac8e-474d-a5d8-317ad48e1d02/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:22:26,563 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743161bc-ac8e-474d-a5d8-317ad48e1d02/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 03:22:26,586 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743161bc-ac8e-474d-a5d8-317ad48e1d02/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-23 03:22:27,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:22:27,471 INFO L263 TraceCheckSpWp]: Trace formula consists of 3639 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-23 03:22:27,479 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:22:27,630 INFO L134 CoverageAnalysis]: Checked inductivity of 663 backedges. 298 proven. 0 refuted. 0 times theorem prover too weak. 365 trivial. 0 not checked. [2022-11-23 03:22:27,630 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 03:22:27,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:22:27,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116173910] [2022-11-23 03:22:27,631 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 03:22:27,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1478994304] [2022-11-23 03:22:27,631 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1478994304] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:22:27,631 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:22:27,631 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-23 03:22:27,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956496430] [2022-11-23 03:22:27,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:22:27,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 03:22:27,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:22:27,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 03:22:27,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-23 03:22:27,633 INFO L87 Difference]: Start difference. First operand 595 states and 862 transitions. Second operand has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 6 states have internal predecessors, (104), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2022-11-23 03:22:28,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:22:28,188 INFO L93 Difference]: Finished difference Result 1157 states and 1721 transitions. [2022-11-23 03:22:28,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-23 03:22:28,189 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 6 states have internal predecessors, (104), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 315 [2022-11-23 03:22:28,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:22:28,194 INFO L225 Difference]: With dead ends: 1157 [2022-11-23 03:22:28,194 INFO L226 Difference]: Without dead ends: 631 [2022-11-23 03:22:28,198 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 317 GetRequests, 310 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-23 03:22:28,199 INFO L413 NwaCegarLoop]: 751 mSDtfsCounter, 23 mSDsluCounter, 2780 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 3531 SdHoareTripleChecker+Invalid, 262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-23 03:22:28,200 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 3531 Invalid, 262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-23 03:22:28,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 631 states. [2022-11-23 03:22:28,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 631 to 603. [2022-11-23 03:22:28,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 603 states, 354 states have (on average 1.2203389830508475) internal successors, (432), 357 states have internal predecessors, (432), 205 states have call successors, (205), 43 states have call predecessors, (205), 42 states have return successors, (235), 202 states have call predecessors, (235), 203 states have call successors, (235) [2022-11-23 03:22:28,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 872 transitions. [2022-11-23 03:22:28,250 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 872 transitions. Word has length 315 [2022-11-23 03:22:28,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:22:28,251 INFO L495 AbstractCegarLoop]: Abstraction has 603 states and 872 transitions. [2022-11-23 03:22:28,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 6 states have internal predecessors, (104), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2022-11-23 03:22:28,252 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 872 transitions. [2022-11-23 03:22:28,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2022-11-23 03:22:28,255 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:22:28,255 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 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] [2022-11-23 03:22:28,273 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743161bc-ac8e-474d-a5d8-317ad48e1d02/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-23 03:22:28,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743161bc-ac8e-474d-a5d8-317ad48e1d02/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-23 03:22:28,472 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:22:28,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:22:28,472 INFO L85 PathProgramCache]: Analyzing trace with hash 27240139, now seen corresponding path program 1 times [2022-11-23 03:22:28,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:22:28,473 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342526433] [2022-11-23 03:22:28,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:22:28,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:22:28,574 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 03:22:28,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1728618698] [2022-11-23 03:22:28,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:22:28,575 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:22:28,575 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743161bc-ac8e-474d-a5d8-317ad48e1d02/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:22:28,576 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743161bc-ac8e-474d-a5d8-317ad48e1d02/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 03:22:28,595 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743161bc-ac8e-474d-a5d8-317ad48e1d02/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-23 03:22:29,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:22:29,546 INFO L263 TraceCheckSpWp]: Trace formula consists of 3633 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 03:22:29,553 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:22:29,577 INFO L134 CoverageAnalysis]: Checked inductivity of 663 backedges. 300 proven. 0 refuted. 0 times theorem prover too weak. 363 trivial. 0 not checked. [2022-11-23 03:22:29,577 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 03:22:29,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:22:29,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342526433] [2022-11-23 03:22:29,577 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 03:22:29,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1728618698] [2022-11-23 03:22:29,578 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1728618698] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:22:29,578 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:22:29,578 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 03:22:29,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963910738] [2022-11-23 03:22:29,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:22:29,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 03:22:29,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:22:29,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 03:22:29,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 03:22:29,581 INFO L87 Difference]: Start difference. First operand 603 states and 872 transitions. Second operand has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2022-11-23 03:22:29,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:22:29,643 INFO L93 Difference]: Finished difference Result 1145 states and 1691 transitions. [2022-11-23 03:22:29,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 03:22:29,644 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 315 [2022-11-23 03:22:29,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:22:29,651 INFO L225 Difference]: With dead ends: 1145 [2022-11-23 03:22:29,651 INFO L226 Difference]: Without dead ends: 611 [2022-11-23 03:22:29,655 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 315 GetRequests, 312 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 03:22:29,657 INFO L413 NwaCegarLoop]: 748 mSDtfsCounter, 3 mSDsluCounter, 1491 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 2239 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 [2022-11-23 03:22:29,657 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 2239 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 03:22:29,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 611 states. [2022-11-23 03:22:29,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 611 to 607. [2022-11-23 03:22:29,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 607 states, 358 states have (on average 1.217877094972067) internal successors, (436), 361 states have internal predecessors, (436), 205 states have call successors, (205), 43 states have call predecessors, (205), 42 states have return successors, (235), 202 states have call predecessors, (235), 203 states have call successors, (235) [2022-11-23 03:22:29,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 607 states to 607 states and 876 transitions. [2022-11-23 03:22:29,717 INFO L78 Accepts]: Start accepts. Automaton has 607 states and 876 transitions. Word has length 315 [2022-11-23 03:22:29,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:22:29,717 INFO L495 AbstractCegarLoop]: Abstraction has 607 states and 876 transitions. [2022-11-23 03:22:29,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2022-11-23 03:22:29,718 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states and 876 transitions. [2022-11-23 03:22:29,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2022-11-23 03:22:29,720 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:22:29,721 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 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] [2022-11-23 03:22:29,738 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743161bc-ac8e-474d-a5d8-317ad48e1d02/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-23 03:22:29,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743161bc-ac8e-474d-a5d8-317ad48e1d02/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-23 03:22:29,934 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:22:29,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:22:29,934 INFO L85 PathProgramCache]: Analyzing trace with hash -375069113, now seen corresponding path program 1 times [2022-11-23 03:22:29,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:22:29,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857118990] [2022-11-23 03:22:29,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:22:29,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:22:30,032 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 03:22:30,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [62780997] [2022-11-23 03:22:30,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:22:30,033 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:22:30,033 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743161bc-ac8e-474d-a5d8-317ad48e1d02/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:22:30,034 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743161bc-ac8e-474d-a5d8-317ad48e1d02/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 03:22:30,043 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743161bc-ac8e-474d-a5d8-317ad48e1d02/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-23 03:22:30,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:22:30,936 INFO L263 TraceCheckSpWp]: Trace formula consists of 3623 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-23 03:22:30,943 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:22:31,075 INFO L134 CoverageAnalysis]: Checked inductivity of 663 backedges. 348 proven. 0 refuted. 0 times theorem prover too weak. 315 trivial. 0 not checked. [2022-11-23 03:22:31,075 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 03:22:31,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:22:31,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857118990] [2022-11-23 03:22:31,076 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 03:22:31,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [62780997] [2022-11-23 03:22:31,076 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [62780997] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:22:31,076 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:22:31,076 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-23 03:22:31,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560051102] [2022-11-23 03:22:31,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:22:31,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 03:22:31,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:22:31,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 03:22:31,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-23 03:22:31,078 INFO L87 Difference]: Start difference. First operand 607 states and 876 transitions. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 6 states have internal predecessors, (94), 4 states have call successors, (32), 3 states have call predecessors, (32), 2 states have return successors, (29), 4 states have call predecessors, (29), 4 states have call successors, (29) [2022-11-23 03:22:31,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:22:31,335 INFO L93 Difference]: Finished difference Result 1202 states and 1764 transitions. [2022-11-23 03:22:31,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-23 03:22:31,336 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 6 states have internal predecessors, (94), 4 states have call successors, (32), 3 states have call predecessors, (32), 2 states have return successors, (29), 4 states have call predecessors, (29), 4 states have call successors, (29) Word has length 315 [2022-11-23 03:22:31,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:22:31,342 INFO L225 Difference]: With dead ends: 1202 [2022-11-23 03:22:31,342 INFO L226 Difference]: Without dead ends: 679 [2022-11-23 03:22:31,346 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 317 GetRequests, 309 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-11-23 03:22:31,346 INFO L413 NwaCegarLoop]: 824 mSDtfsCounter, 99 mSDsluCounter, 3968 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 4792 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 03:22:31,347 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 4792 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 03:22:31,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 679 states. [2022-11-23 03:22:31,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 679 to 676. [2022-11-23 03:22:31,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 676 states, 396 states have (on average 1.2272727272727273) internal successors, (486), 400 states have internal predecessors, (486), 235 states have call successors, (235), 44 states have call predecessors, (235), 43 states have return successors, (265), 231 states have call predecessors, (265), 233 states have call successors, (265) [2022-11-23 03:22:31,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 676 states to 676 states and 986 transitions. [2022-11-23 03:22:31,448 INFO L78 Accepts]: Start accepts. Automaton has 676 states and 986 transitions. Word has length 315 [2022-11-23 03:22:31,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:22:31,449 INFO L495 AbstractCegarLoop]: Abstraction has 676 states and 986 transitions. [2022-11-23 03:22:31,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 6 states have internal predecessors, (94), 4 states have call successors, (32), 3 states have call predecessors, (32), 2 states have return successors, (29), 4 states have call predecessors, (29), 4 states have call successors, (29) [2022-11-23 03:22:31,449 INFO L276 IsEmpty]: Start isEmpty. Operand 676 states and 986 transitions. [2022-11-23 03:22:31,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2022-11-23 03:22:31,451 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:22:31,452 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 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] [2022-11-23 03:22:31,470 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743161bc-ac8e-474d-a5d8-317ad48e1d02/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-23 03:22:31,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743161bc-ac8e-474d-a5d8-317ad48e1d02/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-23 03:22:31,670 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:22:31,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:22:31,673 INFO L85 PathProgramCache]: Analyzing trace with hash -1406110011, now seen corresponding path program 1 times [2022-11-23 03:22:31,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:22:31,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509114437] [2022-11-23 03:22:31,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:22:31,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:22:31,768 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 03:22:31,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [260030344] [2022-11-23 03:22:31,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:22:31,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:22:31,769 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743161bc-ac8e-474d-a5d8-317ad48e1d02/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:22:31,770 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743161bc-ac8e-474d-a5d8-317ad48e1d02/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 03:22:31,797 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743161bc-ac8e-474d-a5d8-317ad48e1d02/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-23 03:22:32,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:22:32,782 INFO L263 TraceCheckSpWp]: Trace formula consists of 3626 conjuncts, 34 conjunts are in the unsatisfiable core [2022-11-23 03:22:32,788 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:22:32,954 INFO L134 CoverageAnalysis]: Checked inductivity of 663 backedges. 286 proven. 3 refuted. 0 times theorem prover too weak. 374 trivial. 0 not checked. [2022-11-23 03:22:32,955 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 03:22:33,306 INFO L134 CoverageAnalysis]: Checked inductivity of 663 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 660 trivial. 0 not checked. [2022-11-23 03:22:33,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:22:33,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509114437] [2022-11-23 03:22:33,306 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 03:22:33,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [260030344] [2022-11-23 03:22:33,307 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [260030344] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 03:22:33,307 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-23 03:22:33,307 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2022-11-23 03:22:33,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057522768] [2022-11-23 03:22:33,307 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-23 03:22:33,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-23 03:22:33,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:22:33,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-23 03:22:33,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-23 03:22:33,309 INFO L87 Difference]: Start difference. First operand 676 states and 986 transitions. Second operand has 10 states, 10 states have (on average 9.7) internal successors, (97), 8 states have internal predecessors, (97), 5 states have call successors, (37), 3 states have call predecessors, (37), 3 states have return successors, (34), 6 states have call predecessors, (34), 5 states have call successors, (34) [2022-11-23 03:22:33,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:22:33,633 INFO L93 Difference]: Finished difference Result 1400 states and 2081 transitions. [2022-11-23 03:22:33,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-23 03:22:33,634 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.7) internal successors, (97), 8 states have internal predecessors, (97), 5 states have call successors, (37), 3 states have call predecessors, (37), 3 states have return successors, (34), 6 states have call predecessors, (34), 5 states have call successors, (34) Word has length 315 [2022-11-23 03:22:33,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:22:33,669 INFO L225 Difference]: With dead ends: 1400 [2022-11-23 03:22:33,669 INFO L226 Difference]: Without dead ends: 828 [2022-11-23 03:22:33,673 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 631 GetRequests, 620 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2022-11-23 03:22:33,674 INFO L413 NwaCegarLoop]: 822 mSDtfsCounter, 141 mSDsluCounter, 6369 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 7191 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 03:22:33,674 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 7191 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 03:22:33,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 828 states. [2022-11-23 03:22:33,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 828 to 821. [2022-11-23 03:22:33,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 821 states, 477 states have (on average 1.2389937106918238) internal successors, (591), 483 states have internal predecessors, (591), 296 states have call successors, (296), 46 states have call predecessors, (296), 46 states have return successors, (330), 291 states have call predecessors, (330), 294 states have call successors, (330) [2022-11-23 03:22:33,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 821 states to 821 states and 1217 transitions. [2022-11-23 03:22:33,756 INFO L78 Accepts]: Start accepts. Automaton has 821 states and 1217 transitions. Word has length 315 [2022-11-23 03:22:33,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:22:33,757 INFO L495 AbstractCegarLoop]: Abstraction has 821 states and 1217 transitions. [2022-11-23 03:22:33,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.7) internal successors, (97), 8 states have internal predecessors, (97), 5 states have call successors, (37), 3 states have call predecessors, (37), 3 states have return successors, (34), 6 states have call predecessors, (34), 5 states have call successors, (34) [2022-11-23 03:22:33,758 INFO L276 IsEmpty]: Start isEmpty. Operand 821 states and 1217 transitions. [2022-11-23 03:22:33,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2022-11-23 03:22:33,760 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:22:33,761 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 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] [2022-11-23 03:22:33,779 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743161bc-ac8e-474d-a5d8-317ad48e1d02/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-23 03:22:33,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743161bc-ac8e-474d-a5d8-317ad48e1d02/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:22:33,974 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:22:33,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:22:33,975 INFO L85 PathProgramCache]: Analyzing trace with hash -579642489, now seen corresponding path program 1 times [2022-11-23 03:22:33,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:22:33,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325093770] [2022-11-23 03:22:33,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:22:33,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:22:34,069 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 03:22:34,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1539422033] [2022-11-23 03:22:34,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:22:34,070 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:22:34,070 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743161bc-ac8e-474d-a5d8-317ad48e1d02/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:22:34,071 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743161bc-ac8e-474d-a5d8-317ad48e1d02/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 03:22:34,095 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743161bc-ac8e-474d-a5d8-317ad48e1d02/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-23 03:22:35,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:22:35,086 INFO L263 TraceCheckSpWp]: Trace formula consists of 3617 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-23 03:22:35,092 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:22:35,133 INFO L134 CoverageAnalysis]: Checked inductivity of 663 backedges. 342 proven. 0 refuted. 0 times theorem prover too weak. 321 trivial. 0 not checked. [2022-11-23 03:22:35,133 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 03:22:35,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:22:35,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325093770] [2022-11-23 03:22:35,133 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 03:22:35,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1539422033] [2022-11-23 03:22:35,134 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1539422033] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:22:35,134 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:22:35,134 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 03:22:35,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985892884] [2022-11-23 03:22:35,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:22:35,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 03:22:35,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:22:35,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 03:22:35,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 03:22:35,136 INFO L87 Difference]: Start difference. First operand 821 states and 1217 transitions. Second operand has 5 states, 4 states have (on average 28.5) internal successors, (114), 5 states have internal predecessors, (114), 3 states have call successors, (34), 2 states have call predecessors, (34), 3 states have return successors, (31), 2 states have call predecessors, (31), 3 states have call successors, (31) [2022-11-23 03:22:35,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:22:35,476 INFO L93 Difference]: Finished difference Result 1286 states and 1894 transitions. [2022-11-23 03:22:35,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 03:22:35,477 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 28.5) internal successors, (114), 5 states have internal predecessors, (114), 3 states have call successors, (34), 2 states have call predecessors, (34), 3 states have return successors, (31), 2 states have call predecessors, (31), 3 states have call successors, (31) Word has length 315 [2022-11-23 03:22:35,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:22:35,483 INFO L225 Difference]: With dead ends: 1286 [2022-11-23 03:22:35,483 INFO L226 Difference]: Without dead ends: 683 [2022-11-23 03:22:35,487 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 315 GetRequests, 311 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-23 03:22:35,488 INFO L413 NwaCegarLoop]: 708 mSDtfsCounter, 2 mSDsluCounter, 2027 mSDsCounter, 0 mSdLazyCounter, 263 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2735 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-23 03:22:35,489 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2735 Invalid, 263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 263 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-23 03:22:35,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 683 states. [2022-11-23 03:22:35,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 683 to 683. [2022-11-23 03:22:35,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 683 states, 401 states have (on average 1.2169576059850373) internal successors, (488), 405 states have internal predecessors, (488), 236 states have call successors, (236), 44 states have call predecessors, (236), 44 states have return successors, (270), 233 states have call predecessors, (270), 234 states have call successors, (270) [2022-11-23 03:22:35,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 683 states to 683 states and 994 transitions. [2022-11-23 03:22:35,546 INFO L78 Accepts]: Start accepts. Automaton has 683 states and 994 transitions. Word has length 315 [2022-11-23 03:22:35,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:22:35,546 INFO L495 AbstractCegarLoop]: Abstraction has 683 states and 994 transitions. [2022-11-23 03:22:35,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 28.5) internal successors, (114), 5 states have internal predecessors, (114), 3 states have call successors, (34), 2 states have call predecessors, (34), 3 states have return successors, (31), 2 states have call predecessors, (31), 3 states have call successors, (31) [2022-11-23 03:22:35,547 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states and 994 transitions. [2022-11-23 03:22:35,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2022-11-23 03:22:35,549 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:22:35,550 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 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] [2022-11-23 03:22:35,568 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743161bc-ac8e-474d-a5d8-317ad48e1d02/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-11-23 03:22:35,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743161bc-ac8e-474d-a5d8-317ad48e1d02/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-23 03:22:35,763 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:22:35,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:22:35,764 INFO L85 PathProgramCache]: Analyzing trace with hash -2138077437, now seen corresponding path program 1 times [2022-11-23 03:22:35,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:22:35,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392213503] [2022-11-23 03:22:35,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:22:35,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:22:35,928 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 03:22:35,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [539234889] [2022-11-23 03:22:35,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:22:35,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:22:35,929 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743161bc-ac8e-474d-a5d8-317ad48e1d02/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:22:35,930 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743161bc-ac8e-474d-a5d8-317ad48e1d02/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 03:22:35,955 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743161bc-ac8e-474d-a5d8-317ad48e1d02/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-23 03:22:36,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:22:36,924 INFO L263 TraceCheckSpWp]: Trace formula consists of 3623 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-23 03:22:36,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:22:37,023 INFO L134 CoverageAnalysis]: Checked inductivity of 663 backedges. 286 proven. 0 refuted. 0 times theorem prover too weak. 377 trivial. 0 not checked. [2022-11-23 03:22:37,023 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 03:22:37,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:22:37,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392213503] [2022-11-23 03:22:37,024 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 03:22:37,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [539234889] [2022-11-23 03:22:37,024 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [539234889] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:22:37,024 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:22:37,024 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-23 03:22:37,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046775151] [2022-11-23 03:22:37,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:22:37,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 03:22:37,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:22:37,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 03:22:37,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-23 03:22:37,026 INFO L87 Difference]: Start difference. First operand 683 states and 994 transitions. Second operand has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 4 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (29), 4 states have call predecessors, (29), 4 states have call successors, (29) [2022-11-23 03:22:37,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:22:37,252 INFO L93 Difference]: Finished difference Result 1203 states and 1760 transitions. [2022-11-23 03:22:37,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 03:22:37,253 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 4 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (29), 4 states have call predecessors, (29), 4 states have call successors, (29) Word has length 315 [2022-11-23 03:22:37,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:22:37,258 INFO L225 Difference]: With dead ends: 1203 [2022-11-23 03:22:37,258 INFO L226 Difference]: Without dead ends: 610 [2022-11-23 03:22:37,262 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 317 GetRequests, 310 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-11-23 03:22:37,262 INFO L413 NwaCegarLoop]: 744 mSDtfsCounter, 89 mSDsluCounter, 2797 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 3541 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 03:22:37,263 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 3541 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 03:22:37,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 610 states. [2022-11-23 03:22:37,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 610 to 610. [2022-11-23 03:22:37,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 610 states, 360 states have (on average 1.2083333333333333) internal successors, (435), 364 states have internal predecessors, (435), 205 states have call successors, (205), 43 states have call predecessors, (205), 43 states have return successors, (237), 202 states have call predecessors, (237), 203 states have call successors, (237) [2022-11-23 03:22:37,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 610 states to 610 states and 877 transitions. [2022-11-23 03:22:37,308 INFO L78 Accepts]: Start accepts. Automaton has 610 states and 877 transitions. Word has length 315 [2022-11-23 03:22:37,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:22:37,309 INFO L495 AbstractCegarLoop]: Abstraction has 610 states and 877 transitions. [2022-11-23 03:22:37,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 4 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (29), 4 states have call predecessors, (29), 4 states have call successors, (29) [2022-11-23 03:22:37,310 INFO L276 IsEmpty]: Start isEmpty. Operand 610 states and 877 transitions. [2022-11-23 03:22:37,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2022-11-23 03:22:37,312 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:22:37,312 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 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] [2022-11-23 03:22:37,330 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743161bc-ac8e-474d-a5d8-317ad48e1d02/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-11-23 03:22:37,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743161bc-ac8e-474d-a5d8-317ad48e1d02/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-23 03:22:37,531 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:22:37,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:22:37,531 INFO L85 PathProgramCache]: Analyzing trace with hash 1941119181, now seen corresponding path program 1 times [2022-11-23 03:22:37,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:22:37,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139195905] [2022-11-23 03:22:37,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:22:37,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:22:37,636 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 03:22:37,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1554275442] [2022-11-23 03:22:37,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:22:37,637 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:22:37,637 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743161bc-ac8e-474d-a5d8-317ad48e1d02/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:22:37,638 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743161bc-ac8e-474d-a5d8-317ad48e1d02/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 03:22:37,644 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743161bc-ac8e-474d-a5d8-317ad48e1d02/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-11-23 03:22:38,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:22:38,720 INFO L263 TraceCheckSpWp]: Trace formula consists of 3661 conjuncts, 39 conjunts are in the unsatisfiable core [2022-11-23 03:22:38,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:22:38,959 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 [2022-11-23 03:22:38,994 INFO L134 CoverageAnalysis]: Checked inductivity of 707 backedges. 317 proven. 0 refuted. 0 times theorem prover too weak. 390 trivial. 0 not checked. [2022-11-23 03:22:38,994 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 03:22:38,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:22:38,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139195905] [2022-11-23 03:22:38,995 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 03:22:38,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1554275442] [2022-11-23 03:22:38,995 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1554275442] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:22:38,995 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:22:38,996 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-23 03:22:38,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992170024] [2022-11-23 03:22:38,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:22:38,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-23 03:22:38,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:22:38,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-23 03:22:38,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-11-23 03:22:38,998 INFO L87 Difference]: Start difference. First operand 610 states and 877 transitions. Second operand has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 6 states have call successors, (37), 2 states have call predecessors, (37), 3 states have return successors, (34), 6 states have call predecessors, (34), 6 states have call successors, (34) [2022-11-23 03:22:40,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:22:40,636 INFO L93 Difference]: Finished difference Result 1202 states and 1807 transitions. [2022-11-23 03:22:40,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-23 03:22:40,637 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 6 states have call successors, (37), 2 states have call predecessors, (37), 3 states have return successors, (34), 6 states have call predecessors, (34), 6 states have call successors, (34) Word has length 326 [2022-11-23 03:22:40,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:22:40,642 INFO L225 Difference]: With dead ends: 1202 [2022-11-23 03:22:40,643 INFO L226 Difference]: Without dead ends: 661 [2022-11-23 03:22:40,646 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 336 GetRequests, 318 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=81, Invalid=299, Unknown=0, NotChecked=0, Total=380 [2022-11-23 03:22:40,647 INFO L413 NwaCegarLoop]: 703 mSDtfsCounter, 100 mSDsluCounter, 5880 mSDsCounter, 0 mSdLazyCounter, 1352 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 6583 SdHoareTripleChecker+Invalid, 1360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1352 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-23 03:22:40,648 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 6583 Invalid, 1360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1352 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-23 03:22:40,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 661 states. [2022-11-23 03:22:40,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 661 to 621. [2022-11-23 03:22:40,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 621 states, 370 states have (on average 1.2081081081081082) internal successors, (447), 373 states have internal predecessors, (447), 205 states have call successors, (205), 43 states have call predecessors, (205), 44 states have return successors, (272), 204 states have call predecessors, (272), 203 states have call successors, (272) [2022-11-23 03:22:40,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 621 states to 621 states and 924 transitions. [2022-11-23 03:22:40,705 INFO L78 Accepts]: Start accepts. Automaton has 621 states and 924 transitions. Word has length 326 [2022-11-23 03:22:40,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:22:40,705 INFO L495 AbstractCegarLoop]: Abstraction has 621 states and 924 transitions. [2022-11-23 03:22:40,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 6 states have call successors, (37), 2 states have call predecessors, (37), 3 states have return successors, (34), 6 states have call predecessors, (34), 6 states have call successors, (34) [2022-11-23 03:22:40,706 INFO L276 IsEmpty]: Start isEmpty. Operand 621 states and 924 transitions. [2022-11-23 03:22:40,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2022-11-23 03:22:40,708 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:22:40,710 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 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] [2022-11-23 03:22:40,732 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743161bc-ac8e-474d-a5d8-317ad48e1d02/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-11-23 03:22:40,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743161bc-ac8e-474d-a5d8-317ad48e1d02/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-23 03:22:40,932 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:22:40,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:22:40,933 INFO L85 PathProgramCache]: Analyzing trace with hash -1133016179, now seen corresponding path program 1 times [2022-11-23 03:22:40,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:22:40,933 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321219380] [2022-11-23 03:22:40,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:22:40,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:22:41,050 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 03:22:41,054 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1029251854] [2022-11-23 03:22:41,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:22:41,054 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:22:41,054 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743161bc-ac8e-474d-a5d8-317ad48e1d02/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:22:41,057 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743161bc-ac8e-474d-a5d8-317ad48e1d02/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 03:22:41,083 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743161bc-ac8e-474d-a5d8-317ad48e1d02/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-11-23 03:22:42,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:22:42,098 INFO L263 TraceCheckSpWp]: Trace formula consists of 3667 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-23 03:22:42,105 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:22:42,136 INFO L134 CoverageAnalysis]: Checked inductivity of 707 backedges. 314 proven. 0 refuted. 0 times theorem prover too weak. 393 trivial. 0 not checked. [2022-11-23 03:22:42,137 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 03:22:42,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:22:42,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321219380] [2022-11-23 03:22:42,137 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 03:22:42,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1029251854] [2022-11-23 03:22:42,137 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1029251854] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:22:42,137 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:22:42,138 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 03:22:42,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389455238] [2022-11-23 03:22:42,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:22:42,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 03:22:42,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:22:42,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 03:22:42,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 03:22:42,140 INFO L87 Difference]: Start difference. First operand 621 states and 924 transitions. Second operand has 5 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2022-11-23 03:22:42,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:22:42,268 INFO L93 Difference]: Finished difference Result 1193 states and 1820 transitions. [2022-11-23 03:22:42,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 03:22:42,269 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) Word has length 326 [2022-11-23 03:22:42,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:22:42,274 INFO L225 Difference]: With dead ends: 1193 [2022-11-23 03:22:42,275 INFO L226 Difference]: Without dead ends: 641 [2022-11-23 03:22:42,278 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 322 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-23 03:22:42,279 INFO L413 NwaCegarLoop]: 767 mSDtfsCounter, 8 mSDsluCounter, 2273 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 3040 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 03:22:42,279 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 3040 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 03:22:42,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 641 states. [2022-11-23 03:22:42,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 641 to 629. [2022-11-23 03:22:42,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 629 states, 378 states have (on average 1.2037037037037037) internal successors, (455), 381 states have internal predecessors, (455), 205 states have call successors, (205), 43 states have call predecessors, (205), 44 states have return successors, (272), 204 states have call predecessors, (272), 203 states have call successors, (272) [2022-11-23 03:22:42,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 629 states to 629 states and 932 transitions. [2022-11-23 03:22:42,353 INFO L78 Accepts]: Start accepts. Automaton has 629 states and 932 transitions. Word has length 326 [2022-11-23 03:22:42,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:22:42,353 INFO L495 AbstractCegarLoop]: Abstraction has 629 states and 932 transitions. [2022-11-23 03:22:42,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2022-11-23 03:22:42,354 INFO L276 IsEmpty]: Start isEmpty. Operand 629 states and 932 transitions. [2022-11-23 03:22:42,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2022-11-23 03:22:42,357 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:22:42,357 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 5, 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, 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] [2022-11-23 03:22:42,376 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743161bc-ac8e-474d-a5d8-317ad48e1d02/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-11-23 03:22:42,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743161bc-ac8e-474d-a5d8-317ad48e1d02/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:22:42,571 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:22:42,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:22:42,571 INFO L85 PathProgramCache]: Analyzing trace with hash -2079693939, now seen corresponding path program 1 times [2022-11-23 03:22:42,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:22:42,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575877098] [2022-11-23 03:22:42,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:22:42,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:22:42,686 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 03:22:42,686 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1552514271] [2022-11-23 03:22:42,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:22:42,687 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:22:42,687 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743161bc-ac8e-474d-a5d8-317ad48e1d02/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:22:42,688 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743161bc-ac8e-474d-a5d8-317ad48e1d02/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 03:22:42,692 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743161bc-ac8e-474d-a5d8-317ad48e1d02/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-11-23 03:22:43,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:22:43,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 3651 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 03:22:43,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:22:43,749 INFO L134 CoverageAnalysis]: Checked inductivity of 707 backedges. 294 proven. 0 refuted. 0 times theorem prover too weak. 413 trivial. 0 not checked. [2022-11-23 03:22:43,749 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 03:22:43,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:22:43,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575877098] [2022-11-23 03:22:43,750 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 03:22:43,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1552514271] [2022-11-23 03:22:43,750 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1552514271] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:22:43,750 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:22:43,750 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 03:22:43,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853715756] [2022-11-23 03:22:43,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:22:43,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 03:22:43,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:22:43,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 03:22:43,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 03:22:43,752 INFO L87 Difference]: Start difference. First operand 629 states and 932 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, (36), 2 states have call predecessors, (36), 2 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2022-11-23 03:22:43,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:22:43,819 INFO L93 Difference]: Finished difference Result 1189 states and 1850 transitions. [2022-11-23 03:22:43,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 03:22:43,820 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, (36), 2 states have call predecessors, (36), 2 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) Word has length 326 [2022-11-23 03:22:43,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:22:43,825 INFO L225 Difference]: With dead ends: 1189 [2022-11-23 03:22:43,825 INFO L226 Difference]: Without dead ends: 629 [2022-11-23 03:22:43,829 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 327 GetRequests, 324 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 03:22:43,830 INFO L413 NwaCegarLoop]: 752 mSDtfsCounter, 7 mSDsluCounter, 1484 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 2236 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 [2022-11-23 03:22:43,830 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 2236 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 03:22:43,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 629 states. [2022-11-23 03:22:43,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 629 to 629. [2022-11-23 03:22:43,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 629 states, 378 states have (on average 1.2010582010582012) internal successors, (454), 381 states have internal predecessors, (454), 205 states have call successors, (205), 43 states have call predecessors, (205), 44 states have return successors, (272), 204 states have call predecessors, (272), 203 states have call successors, (272) [2022-11-23 03:22:43,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 629 states to 629 states and 931 transitions. [2022-11-23 03:22:43,889 INFO L78 Accepts]: Start accepts. Automaton has 629 states and 931 transitions. Word has length 326 [2022-11-23 03:22:43,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:22:43,889 INFO L495 AbstractCegarLoop]: Abstraction has 629 states and 931 transitions. [2022-11-23 03:22:43,890 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, (36), 2 states have call predecessors, (36), 2 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2022-11-23 03:22:43,890 INFO L276 IsEmpty]: Start isEmpty. Operand 629 states and 931 transitions. [2022-11-23 03:22:43,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2022-11-23 03:22:43,892 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:22:43,893 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 5, 5, 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, 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] [2022-11-23 03:22:43,912 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743161bc-ac8e-474d-a5d8-317ad48e1d02/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-11-23 03:22:44,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743161bc-ac8e-474d-a5d8-317ad48e1d02/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:22:44,110 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:22:44,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:22:44,111 INFO L85 PathProgramCache]: Analyzing trace with hash -1767486835, now seen corresponding path program 1 times [2022-11-23 03:22:44,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:22:44,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567893677] [2022-11-23 03:22:44,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:22:44,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:22:44,208 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 03:22:44,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1850482203] [2022-11-23 03:22:44,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:22:44,209 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:22:44,209 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743161bc-ac8e-474d-a5d8-317ad48e1d02/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:22:44,210 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743161bc-ac8e-474d-a5d8-317ad48e1d02/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 03:22:44,231 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743161bc-ac8e-474d-a5d8-317ad48e1d02/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-11-23 03:22:45,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:22:45,238 INFO L263 TraceCheckSpWp]: Trace formula consists of 3661 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-23 03:22:45,244 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:22:45,308 INFO L134 CoverageAnalysis]: Checked inductivity of 709 backedges. 296 proven. 0 refuted. 0 times theorem prover too weak. 413 trivial. 0 not checked. [2022-11-23 03:22:45,309 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 03:22:45,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:22:45,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567893677] [2022-11-23 03:22:45,309 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 03:22:45,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1850482203] [2022-11-23 03:22:45,309 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1850482203] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:22:45,310 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:22:45,310 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 03:22:45,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000127938] [2022-11-23 03:22:45,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:22:45,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 03:22:45,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:22:45,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 03:22:45,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 03:22:45,312 INFO L87 Difference]: Start difference. First operand 629 states and 931 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, (36), 2 states have call predecessors, (36), 2 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2022-11-23 03:22:45,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:22:45,804 INFO L93 Difference]: Finished difference Result 1189 states and 1848 transitions. [2022-11-23 03:22:45,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 03:22:45,804 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, (36), 2 states have call predecessors, (36), 2 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) Word has length 330 [2022-11-23 03:22:45,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:22:45,809 INFO L225 Difference]: With dead ends: 1189 [2022-11-23 03:22:45,809 INFO L226 Difference]: Without dead ends: 629 [2022-11-23 03:22:45,814 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 327 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-23 03:22:45,815 INFO L413 NwaCegarLoop]: 779 mSDtfsCounter, 10 mSDsluCounter, 2141 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 2920 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-23 03:22:45,816 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 2920 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-23 03:22:45,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 629 states. [2022-11-23 03:22:45,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 629 to 629. [2022-11-23 03:22:45,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 629 states, 378 states have (on average 1.1984126984126984) internal successors, (453), 381 states have internal predecessors, (453), 205 states have call successors, (205), 43 states have call predecessors, (205), 44 states have return successors, (272), 204 states have call predecessors, (272), 203 states have call successors, (272) [2022-11-23 03:22:45,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 629 states to 629 states and 930 transitions. [2022-11-23 03:22:45,871 INFO L78 Accepts]: Start accepts. Automaton has 629 states and 930 transitions. Word has length 330 [2022-11-23 03:22:45,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:22:45,872 INFO L495 AbstractCegarLoop]: Abstraction has 629 states and 930 transitions. [2022-11-23 03:22:45,872 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, (36), 2 states have call predecessors, (36), 2 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2022-11-23 03:22:45,872 INFO L276 IsEmpty]: Start isEmpty. Operand 629 states and 930 transitions. [2022-11-23 03:22:45,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2022-11-23 03:22:45,874 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:22:45,875 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 5, 5, 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, 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] [2022-11-23 03:22:45,896 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743161bc-ac8e-474d-a5d8-317ad48e1d02/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-11-23 03:22:46,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743161bc-ac8e-474d-a5d8-317ad48e1d02/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:22:46,088 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:22:46,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:22:46,089 INFO L85 PathProgramCache]: Analyzing trace with hash -481945779, now seen corresponding path program 1 times [2022-11-23 03:22:46,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:22:46,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643968220] [2022-11-23 03:22:46,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:22:46,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:22:46,182 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 03:22:46,182 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1422113822] [2022-11-23 03:22:46,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:22:46,182 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:22:46,183 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743161bc-ac8e-474d-a5d8-317ad48e1d02/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:22:46,184 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743161bc-ac8e-474d-a5d8-317ad48e1d02/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 03:22:46,202 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743161bc-ac8e-474d-a5d8-317ad48e1d02/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-11-23 03:22:47,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:22:47,500 INFO L263 TraceCheckSpWp]: Trace formula consists of 3671 conjuncts, 177 conjunts are in the unsatisfiable core [2022-11-23 03:22:47,516 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:22:47,526 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 [2022-11-23 03:22:48,411 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 [2022-11-23 03:22:48,422 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 [2022-11-23 03:22:48,432 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 [2022-11-23 03:22:51,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 03:22:51,198 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 [2022-11-23 03:22:51,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 03:22:51,209 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 [2022-11-23 03:22:51,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 03:22:51,219 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 [2022-11-23 03:22:55,567 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_4356 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_4356) |c_#memory_$Pointer$.base|)) (exists ((v_ArrVal_4355 (Array Int Int))) (= (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_4355) |c_#memory_int|)) (exists ((v_ArrVal_4354 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_4354) |c_#memory_$Pointer$.offset|))) is different from true [2022-11-23 03:22:56,183 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_4361 (Array Int Int)) (v_ArrVal_4360 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_4358 Int)) (and (= |c_#memory_$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$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_4360))) (= (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_4361) |c_#memory_int|) (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_4358)) |c_#memory_$Pointer$.base|))) is different from true [2022-11-23 03:22:56,647 WARN L859 $PredicateComparison]: unable to prove that (and (not (= 0 (mod (select (select |c_#memory_int| |c_aws_array_list_is_valid_#in~list.base|) (+ |c_aws_array_list_is_valid_#in~list.offset| 8)) 18446744073709551616))) (exists ((v_ArrVal_4361 (Array Int Int)) (v_ArrVal_4360 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_4358 Int)) (and (= |c_#memory_$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$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_4358))) (= |c_#memory_$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_4360))) (= (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_4361) |c_#memory_int|)))) is different from true [2022-11-23 03:22:58,283 INFO L134 CoverageAnalysis]: Checked inductivity of 709 backedges. 335 proven. 17 refuted. 0 times theorem prover too weak. 351 trivial. 6 not checked. [2022-11-23 03:22:58,283 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 03:23:00,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:23:00,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643968220] [2022-11-23 03:23:00,537 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 03:23:00,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1422113822] [2022-11-23 03:23:00,537 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1422113822] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 03:23:00,537 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-23 03:23:00,537 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2022-11-23 03:23:00,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993786128] [2022-11-23 03:23:00,538 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-23 03:23:00,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-11-23 03:23:00,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:23:00,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-11-23 03:23:00,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=1745, Unknown=17, NotChecked=258, Total=2162 [2022-11-23 03:23:00,540 INFO L87 Difference]: Start difference. First operand 629 states and 930 transitions. Second operand has 40 states, 36 states have (on average 4.111111111111111) internal successors, (148), 35 states have internal predecessors, (148), 13 states have call successors, (40), 8 states have call predecessors, (40), 12 states have return successors, (37), 12 states have call predecessors, (37), 13 states have call successors, (37) [2022-11-23 03:23:29,003 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-23 03:23:30,690 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.64s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-23 03:23:34,089 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-23 03:23:36,101 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-23 03:23:41,958 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-23 03:23:47,625 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-23 03:25:48,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:25:48,376 INFO L93 Difference]: Finished difference Result 3197 states and 5793 transitions. [2022-11-23 03:25:48,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2022-11-23 03:25:48,377 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 36 states have (on average 4.111111111111111) internal successors, (148), 35 states have internal predecessors, (148), 13 states have call successors, (40), 8 states have call predecessors, (40), 12 states have return successors, (37), 12 states have call predecessors, (37), 13 states have call successors, (37) Word has length 330 [2022-11-23 03:25:48,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:25:48,403 INFO L225 Difference]: With dead ends: 3197 [2022-11-23 03:25:48,403 INFO L226 Difference]: Without dead ends: 2637 [2022-11-23 03:25:48,411 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 609 GetRequests, 498 SyntacticMatches, 7 SemanticMatches, 104 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 3372 ImplicationChecksByTransitivity, 30.6s TimeCoverageRelationStatistics Valid=801, Invalid=9642, Unknown=75, NotChecked=612, Total=11130 [2022-11-23 03:25:48,412 INFO L413 NwaCegarLoop]: 1327 mSDtfsCounter, 2363 mSDsluCounter, 15055 mSDsCounter, 0 mSdLazyCounter, 58627 mSolverCounterSat, 3013 mSolverCounterUnsat, 465 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 136.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2580 SdHoareTripleChecker+Valid, 16382 SdHoareTripleChecker+Invalid, 72441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.6s SdHoareTripleChecker+Time, 3013 IncrementalHoareTripleChecker+Valid, 58627 IncrementalHoareTripleChecker+Invalid, 465 IncrementalHoareTripleChecker+Unknown, 10336 IncrementalHoareTripleChecker+Unchecked, 144.8s IncrementalHoareTripleChecker+Time [2022-11-23 03:25:48,412 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2580 Valid, 16382 Invalid, 72441 Unknown, 0 Unchecked, 0.6s Time], IncrementalHoareTripleChecker [3013 Valid, 58627 Invalid, 465 Unknown, 10336 Unchecked, 144.8s Time] [2022-11-23 03:25:48,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2637 states. [2022-11-23 03:25:48,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2637 to 1784. [2022-11-23 03:25:48,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1784 states, 1108 states have (on average 1.2012635379061372) internal successors, (1331), 1128 states have internal predecessors, (1331), 537 states have call successors, (537), 114 states have call predecessors, (537), 137 states have return successors, (1120), 541 states have call predecessors, (1120), 534 states have call successors, (1120) [2022-11-23 03:25:48,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1784 states to 1784 states and 2988 transitions. [2022-11-23 03:25:48,746 INFO L78 Accepts]: Start accepts. Automaton has 1784 states and 2988 transitions. Word has length 330 [2022-11-23 03:25:48,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:25:48,747 INFO L495 AbstractCegarLoop]: Abstraction has 1784 states and 2988 transitions. [2022-11-23 03:25:48,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 36 states have (on average 4.111111111111111) internal successors, (148), 35 states have internal predecessors, (148), 13 states have call successors, (40), 8 states have call predecessors, (40), 12 states have return successors, (37), 12 states have call predecessors, (37), 13 states have call successors, (37) [2022-11-23 03:25:48,747 INFO L276 IsEmpty]: Start isEmpty. Operand 1784 states and 2988 transitions. [2022-11-23 03:25:48,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2022-11-23 03:25:48,752 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:25:48,752 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 5, 5, 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, 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] [2022-11-23 03:25:48,773 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743161bc-ac8e-474d-a5d8-317ad48e1d02/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-11-23 03:25:48,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743161bc-ac8e-474d-a5d8-317ad48e1d02/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:25:48,967 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:25:48,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:25:48,967 INFO L85 PathProgramCache]: Analyzing trace with hash -1948958252, now seen corresponding path program 1 times [2022-11-23 03:25:48,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:25:48,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571754337] [2022-11-23 03:25:48,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:25:48,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:25:49,067 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 03:25:49,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [73081881] [2022-11-23 03:25:49,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:25:49,068 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:25:49,068 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743161bc-ac8e-474d-a5d8-317ad48e1d02/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:25:49,069 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743161bc-ac8e-474d-a5d8-317ad48e1d02/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 03:25:49,091 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743161bc-ac8e-474d-a5d8-317ad48e1d02/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-11-23 03:25:50,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:25:50,094 INFO L263 TraceCheckSpWp]: Trace formula consists of 3726 conjuncts, 36 conjunts are in the unsatisfiable core [2022-11-23 03:25:50,101 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:25:50,269 INFO L134 CoverageAnalysis]: Checked inductivity of 749 backedges. 248 proven. 1 refuted. 0 times theorem prover too weak. 500 trivial. 0 not checked. [2022-11-23 03:25:50,270 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 03:25:51,277 INFO L134 CoverageAnalysis]: Checked inductivity of 749 backedges. 89 proven. 13 refuted. 0 times theorem prover too weak. 647 trivial. 0 not checked. [2022-11-23 03:25:51,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:25:51,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571754337] [2022-11-23 03:25:51,277 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 03:25:51,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [73081881] [2022-11-23 03:25:51,277 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [73081881] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 03:25:51,277 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-23 03:25:51,278 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15] total 22 [2022-11-23 03:25:51,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445143627] [2022-11-23 03:25:51,278 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-23 03:25:51,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-23 03:25:51,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:25:51,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-23 03:25:51,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=415, Unknown=0, NotChecked=0, Total=462 [2022-11-23 03:25:51,281 INFO L87 Difference]: Start difference. First operand 1784 states and 2988 transitions. Second operand has 22 states, 18 states have (on average 7.777777777777778) internal successors, (140), 15 states have internal predecessors, (140), 6 states have call successors, (42), 3 states have call predecessors, (42), 7 states have return successors, (42), 8 states have call predecessors, (42), 5 states have call successors, (42) [2022-11-23 03:25:52,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:25:52,599 INFO L93 Difference]: Finished difference Result 3440 states and 5848 transitions. [2022-11-23 03:25:52,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-23 03:25:52,600 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 18 states have (on average 7.777777777777778) internal successors, (140), 15 states have internal predecessors, (140), 6 states have call successors, (42), 3 states have call predecessors, (42), 7 states have return successors, (42), 8 states have call predecessors, (42), 5 states have call successors, (42) Word has length 360 [2022-11-23 03:25:52,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:25:52,617 INFO L225 Difference]: With dead ends: 3440 [2022-11-23 03:25:52,617 INFO L226 Difference]: Without dead ends: 1802 [2022-11-23 03:25:52,630 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 721 GetRequests, 694 SyntacticMatches, 4 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=62, Invalid=538, Unknown=0, NotChecked=0, Total=600 [2022-11-23 03:25:52,630 INFO L413 NwaCegarLoop]: 742 mSDtfsCounter, 15 mSDsluCounter, 12322 mSDsCounter, 0 mSdLazyCounter, 1165 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 13064 SdHoareTripleChecker+Invalid, 1170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-23 03:25:52,631 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 13064 Invalid, 1170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 1165 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-23 03:25:52,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1802 states. [2022-11-23 03:25:52,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1802 to 1784. [2022-11-23 03:25:52,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1784 states, 1108 states have (on average 1.2012635379061372) internal successors, (1331), 1128 states have internal predecessors, (1331), 537 states have call successors, (537), 114 states have call predecessors, (537), 137 states have return successors, (1114), 541 states have call predecessors, (1114), 534 states have call successors, (1114) [2022-11-23 03:25:52,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1784 states to 1784 states and 2982 transitions. [2022-11-23 03:25:52,884 INFO L78 Accepts]: Start accepts. Automaton has 1784 states and 2982 transitions. Word has length 360 [2022-11-23 03:25:52,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:25:52,885 INFO L495 AbstractCegarLoop]: Abstraction has 1784 states and 2982 transitions. [2022-11-23 03:25:52,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 18 states have (on average 7.777777777777778) internal successors, (140), 15 states have internal predecessors, (140), 6 states have call successors, (42), 3 states have call predecessors, (42), 7 states have return successors, (42), 8 states have call predecessors, (42), 5 states have call successors, (42) [2022-11-23 03:25:52,886 INFO L276 IsEmpty]: Start isEmpty. Operand 1784 states and 2982 transitions. [2022-11-23 03:25:52,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2022-11-23 03:25:52,890 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:25:52,891 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 5, 5, 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, 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] [2022-11-23 03:25:52,912 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743161bc-ac8e-474d-a5d8-317ad48e1d02/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-11-23 03:25:53,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743161bc-ac8e-474d-a5d8-317ad48e1d02/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:25:53,105 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:25:53,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:25:53,106 INFO L85 PathProgramCache]: Analyzing trace with hash -848091674, now seen corresponding path program 2 times [2022-11-23 03:25:53,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:25:53,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387206852] [2022-11-23 03:25:53,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:25:53,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:25:53,193 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 03:25:53,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1314982794] [2022-11-23 03:25:53,194 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-23 03:25:53,194 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:25:53,194 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743161bc-ac8e-474d-a5d8-317ad48e1d02/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:25:53,195 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743161bc-ac8e-474d-a5d8-317ad48e1d02/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 03:25:53,219 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743161bc-ac8e-474d-a5d8-317ad48e1d02/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-11-23 03:25:54,332 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-23 03:25:54,333 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 03:25:54,347 INFO L263 TraceCheckSpWp]: Trace formula consists of 3726 conjuncts, 36 conjunts are in the unsatisfiable core [2022-11-23 03:25:54,353 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:25:54,482 INFO L134 CoverageAnalysis]: Checked inductivity of 749 backedges. 386 proven. 1 refuted. 0 times theorem prover too weak. 362 trivial. 0 not checked. [2022-11-23 03:25:54,482 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 03:25:55,386 INFO L134 CoverageAnalysis]: Checked inductivity of 749 backedges. 97 proven. 35 refuted. 0 times theorem prover too weak. 617 trivial. 0 not checked. [2022-11-23 03:25:55,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:25:55,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387206852] [2022-11-23 03:25:55,386 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 03:25:55,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1314982794] [2022-11-23 03:25:55,387 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1314982794] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 03:25:55,387 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-23 03:25:55,387 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 18] total 24 [2022-11-23 03:25:55,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351230231] [2022-11-23 03:25:55,388 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-23 03:25:55,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-23 03:25:55,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:25:55,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-23 03:25:55,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=496, Unknown=0, NotChecked=0, Total=552 [2022-11-23 03:25:55,389 INFO L87 Difference]: Start difference. First operand 1784 states and 2982 transitions. Second operand has 24 states, 20 states have (on average 7.35) internal successors, (147), 17 states have internal predecessors, (147), 6 states have call successors, (45), 3 states have call predecessors, (45), 8 states have return successors, (45), 8 states have call predecessors, (45), 5 states have call successors, (45) [2022-11-23 03:25:56,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:25:56,705 INFO L93 Difference]: Finished difference Result 3437 states and 5776 transitions. [2022-11-23 03:25:56,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-23 03:25:56,706 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 20 states have (on average 7.35) internal successors, (147), 17 states have internal predecessors, (147), 6 states have call successors, (45), 3 states have call predecessors, (45), 8 states have return successors, (45), 8 states have call predecessors, (45), 5 states have call successors, (45) Word has length 360 [2022-11-23 03:25:56,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:25:56,722 INFO L225 Difference]: With dead ends: 3437 [2022-11-23 03:25:56,722 INFO L226 Difference]: Without dead ends: 1795 [2022-11-23 03:25:56,733 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 721 GetRequests, 692 SyntacticMatches, 4 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=629, Unknown=0, NotChecked=0, Total=702 [2022-11-23 03:25:56,734 INFO L413 NwaCegarLoop]: 746 mSDtfsCounter, 12 mSDsluCounter, 13859 mSDsCounter, 0 mSdLazyCounter, 1230 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 14605 SdHoareTripleChecker+Invalid, 1233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-23 03:25:56,734 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 14605 Invalid, 1233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1230 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-23 03:25:56,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1795 states. [2022-11-23 03:25:56,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1795 to 1784. [2022-11-23 03:25:56,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1784 states, 1108 states have (on average 1.2012635379061372) internal successors, (1331), 1128 states have internal predecessors, (1331), 537 states have call successors, (537), 114 states have call predecessors, (537), 137 states have return successors, (1110), 541 states have call predecessors, (1110), 534 states have call successors, (1110) [2022-11-23 03:25:56,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1784 states to 1784 states and 2978 transitions. [2022-11-23 03:25:56,989 INFO L78 Accepts]: Start accepts. Automaton has 1784 states and 2978 transitions. Word has length 360 [2022-11-23 03:25:56,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:25:56,989 INFO L495 AbstractCegarLoop]: Abstraction has 1784 states and 2978 transitions. [2022-11-23 03:25:56,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 20 states have (on average 7.35) internal successors, (147), 17 states have internal predecessors, (147), 6 states have call successors, (45), 3 states have call predecessors, (45), 8 states have return successors, (45), 8 states have call predecessors, (45), 5 states have call successors, (45) [2022-11-23 03:25:56,990 INFO L276 IsEmpty]: Start isEmpty. Operand 1784 states and 2978 transitions. [2022-11-23 03:25:56,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2022-11-23 03:25:56,994 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:25:56,994 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 4, 4, 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, 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] [2022-11-23 03:25:57,013 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743161bc-ac8e-474d-a5d8-317ad48e1d02/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-11-23 03:25:57,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743161bc-ac8e-474d-a5d8-317ad48e1d02/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:25:57,208 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:25:57,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:25:57,208 INFO L85 PathProgramCache]: Analyzing trace with hash 872377017, now seen corresponding path program 3 times [2022-11-23 03:25:57,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:25:57,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555168981] [2022-11-23 03:25:57,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:25:57,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:25:57,299 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 03:25:57,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [240268444] [2022-11-23 03:25:57,299 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-23 03:25:57,300 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:25:57,300 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743161bc-ac8e-474d-a5d8-317ad48e1d02/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:25:57,301 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743161bc-ac8e-474d-a5d8-317ad48e1d02/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 03:25:57,319 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743161bc-ac8e-474d-a5d8-317ad48e1d02/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-11-23 03:25:58,940 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-23 03:25:58,940 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 03:25:58,951 INFO L263 TraceCheckSpWp]: Trace formula consists of 2167 conjuncts, 155 conjunts are in the unsatisfiable core [2022-11-23 03:25:58,957 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:25:59,153 INFO L321 Elim1Store]: treesize reduction 64, result has 42.3 percent of original size [2022-11-23 03:25:59,154 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 33 treesize of output 59 [2022-11-23 03:27:43,963 WARN L233 SmtUtils]: Spent 1.07m on a formula simplification. DAG size of input: 398 DAG size of output: 145 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-23 03:27:43,965 INFO L321 Elim1Store]: treesize reduction 1206, result has 22.4 percent of original size [2022-11-23 03:27:43,965 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 4 stores, 10 select indices, 10 select index equivalence classes, 3 disjoint index pairs (out of 45 index pairs), introduced 14 new quantified variables, introduced 78 case distinctions, treesize of input 410 treesize of output 670 [2022-11-23 03:27:45,771 INFO L134 CoverageAnalysis]: Checked inductivity of 717 backedges. 212 proven. 0 refuted. 0 times theorem prover too weak. 505 trivial. 0 not checked. [2022-11-23 03:27:45,771 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 03:27:45,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:27:45,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555168981] [2022-11-23 03:27:45,772 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 03:27:45,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [240268444] [2022-11-23 03:27:45,772 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [240268444] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:27:45,772 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:27:45,772 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-11-23 03:27:45,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223623944] [2022-11-23 03:27:45,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:27:45,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-23 03:27:45,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:27:45,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-23 03:27:45,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=670, Unknown=1, NotChecked=0, Total=756 [2022-11-23 03:27:45,775 INFO L87 Difference]: Start difference. First operand 1784 states and 2978 transitions. Second operand has 28 states, 24 states have (on average 5.041666666666667) internal successors, (121), 21 states have internal predecessors, (121), 7 states have call successors, (38), 4 states have call predecessors, (38), 6 states have return successors, (35), 7 states have call predecessors, (35), 6 states have call successors, (35) [2022-11-23 03:27:57,360 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-11-23 03:28:01,549 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.82s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-11-23 03:28:03,088 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-11-23 03:28:14,379 WARN L233 SmtUtils]: Spent 9.45s on a formula simplification that was a NOOP. DAG size: 83 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 03:28:19,504 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-11-23 03:28:34,851 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-11-23 03:28:36,918 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-11-23 03:28:41,215 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-11-23 03:28:45,961 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-11-23 03:28:54,362 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-11-23 03:28:55,594 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-11-23 03:29:14,221 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-11-23 03:29:33,249 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.58s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-11-23 03:29:39,194 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-11-23 03:29:41,993 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-11-23 03:29:44,251 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-11-23 03:29:50,018 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-11-23 03:29:59,826 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-11-23 03:30:01,932 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-11-23 03:30:11,906 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-11-23 03:30:16,014 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-11-23 03:30:18,829 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-11-23 03:30:23,464 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-11-23 03:30:25,279 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.81s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-11-23 03:30:27,422 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-11-23 03:30:37,517 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-11-23 03:30:39,521 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-11-23 03:30:50,319 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-11-23 03:30:52,104 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.78s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-11-23 03:30:56,839 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-11-23 03:30:58,843 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-11-23 03:31:01,348 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.80s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-11-23 03:31:07,385 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-11-23 03:31:09,392 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-11-23 03:31:17,423 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.65s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-11-23 03:31:23,440 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.72s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-11-23 03:31:41,960 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-11-23 03:31:48,092 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-11-23 03:31:59,448 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-11-23 03:32:00,762 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-11-23 03:32:24,314 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-11-23 03:32:25,745 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-11-23 03:32:39,327 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-11-23 03:32:39,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:32:39,351 INFO L93 Difference]: Finished difference Result 3128 states and 5592 transitions. [2022-11-23 03:32:39,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-11-23 03:32:39,352 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 24 states have (on average 5.041666666666667) internal successors, (121), 21 states have internal predecessors, (121), 7 states have call successors, (38), 4 states have call predecessors, (38), 6 states have return successors, (35), 7 states have call predecessors, (35), 6 states have call successors, (35) Word has length 344 [2022-11-23 03:32:39,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:32:39,373 INFO L225 Difference]: With dead ends: 3128 [2022-11-23 03:32:39,374 INFO L226 Difference]: Without dead ends: 3096 [2022-11-23 03:32:39,376 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 360 GetRequests, 320 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 414 ImplicationChecksByTransitivity, 35.5s TimeCoverageRelationStatistics Valid=177, Invalid=1541, Unknown=4, NotChecked=0, Total=1722 [2022-11-23 03:32:39,377 INFO L413 NwaCegarLoop]: 920 mSDtfsCounter, 984 mSDsluCounter, 9460 mSDsCounter, 0 mSdLazyCounter, 18786 mSolverCounterSat, 819 mSolverCounterUnsat, 112 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 266.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1150 SdHoareTripleChecker+Valid, 10380 SdHoareTripleChecker+Invalid, 19717 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 819 IncrementalHoareTripleChecker+Valid, 18786 IncrementalHoareTripleChecker+Invalid, 112 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 270.7s IncrementalHoareTripleChecker+Time [2022-11-23 03:32:39,377 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1150 Valid, 10380 Invalid, 19717 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [819 Valid, 18786 Invalid, 112 Unknown, 0 Unchecked, 270.7s Time] [2022-11-23 03:32:39,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3096 states. [2022-11-23 03:32:40,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3096 to 2986. [2022-11-23 03:32:40,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2986 states, 1826 states have (on average 1.2042716319824753) internal successors, (2199), 1861 states have internal predecessors, (2199), 931 states have call successors, (931), 189 states have call predecessors, (931), 227 states have return successors, (2200), 935 states have call predecessors, (2200), 927 states have call successors, (2200) [2022-11-23 03:32:40,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2986 states to 2986 states and 5330 transitions. [2022-11-23 03:32:40,315 INFO L78 Accepts]: Start accepts. Automaton has 2986 states and 5330 transitions. Word has length 344 [2022-11-23 03:32:40,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:32:40,316 INFO L495 AbstractCegarLoop]: Abstraction has 2986 states and 5330 transitions. [2022-11-23 03:32:40,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 24 states have (on average 5.041666666666667) internal successors, (121), 21 states have internal predecessors, (121), 7 states have call successors, (38), 4 states have call predecessors, (38), 6 states have return successors, (35), 7 states have call predecessors, (35), 6 states have call successors, (35) [2022-11-23 03:32:40,316 INFO L276 IsEmpty]: Start isEmpty. Operand 2986 states and 5330 transitions. [2022-11-23 03:32:40,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 349 [2022-11-23 03:32:40,327 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:32:40,327 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 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] [2022-11-23 03:32:40,341 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743161bc-ac8e-474d-a5d8-317ad48e1d02/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-11-23 03:32:40,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743161bc-ac8e-474d-a5d8-317ad48e1d02/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-11-23 03:32:40,542 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:32:40,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:32:40,542 INFO L85 PathProgramCache]: Analyzing trace with hash -1941862138, now seen corresponding path program 4 times [2022-11-23 03:32:40,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:32:40,542 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822417896] [2022-11-23 03:32:40,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:32:40,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:32:40,632 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 03:32:40,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1639171424] [2022-11-23 03:32:40,632 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-23 03:32:40,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:32:40,633 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743161bc-ac8e-474d-a5d8-317ad48e1d02/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:32:40,634 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743161bc-ac8e-474d-a5d8-317ad48e1d02/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 03:32:40,655 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743161bc-ac8e-474d-a5d8-317ad48e1d02/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-11-23 03:32:41,772 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-23 03:32:41,772 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 03:32:41,788 INFO L263 TraceCheckSpWp]: Trace formula consists of 3718 conjuncts, 42 conjunts are in the unsatisfiable core [2022-11-23 03:32:41,796 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:32:42,034 INFO L134 CoverageAnalysis]: Checked inductivity of 719 backedges. 428 proven. 11 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2022-11-23 03:32:42,035 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 03:32:43,495 INFO L134 CoverageAnalysis]: Checked inductivity of 719 backedges. 82 proven. 61 refuted. 0 times theorem prover too weak. 576 trivial. 0 not checked. [2022-11-23 03:32:43,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:32:43,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822417896] [2022-11-23 03:32:43,495 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 03:32:43,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1639171424] [2022-11-23 03:32:43,495 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1639171424] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 03:32:43,495 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-23 03:32:43,496 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 21] total 30 [2022-11-23 03:32:43,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777013139] [2022-11-23 03:32:43,496 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-23 03:32:43,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-11-23 03:32:43,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:32:43,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-11-23 03:32:43,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=799, Unknown=0, NotChecked=0, Total=870 [2022-11-23 03:32:43,498 INFO L87 Difference]: Start difference. First operand 2986 states and 5330 transitions. Second operand has 30 states, 26 states have (on average 6.8076923076923075) internal successors, (177), 21 states have internal predecessors, (177), 8 states have call successors, (50), 3 states have call predecessors, (50), 10 states have return successors, (52), 12 states have call predecessors, (52), 7 states have call successors, (52) [2022-11-23 03:32:45,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:32:45,830 INFO L93 Difference]: Finished difference Result 5937 states and 10708 transitions. [2022-11-23 03:32:45,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-23 03:32:45,830 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 26 states have (on average 6.8076923076923075) internal successors, (177), 21 states have internal predecessors, (177), 8 states have call successors, (50), 3 states have call predecessors, (50), 10 states have return successors, (52), 12 states have call predecessors, (52), 7 states have call successors, (52) Word has length 348 [2022-11-23 03:32:45,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:32:45,858 INFO L225 Difference]: With dead ends: 5937 [2022-11-23 03:32:45,858 INFO L226 Difference]: Without dead ends: 3097 [2022-11-23 03:32:45,876 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 699 GetRequests, 662 SyntacticMatches, 4 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=99, Invalid=1091, Unknown=0, NotChecked=0, Total=1190 [2022-11-23 03:32:45,877 INFO L413 NwaCegarLoop]: 775 mSDtfsCounter, 37 mSDsluCounter, 15883 mSDsCounter, 0 mSdLazyCounter, 1447 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 16658 SdHoareTripleChecker+Invalid, 1453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1447 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-23 03:32:45,877 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 16658 Invalid, 1453 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1447 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-23 03:32:45,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3097 states. [2022-11-23 03:32:46,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3097 to 3020. [2022-11-23 03:32:46,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3020 states, 1856 states have (on average 1.2036637931034482) internal successors, (2234), 1892 states have internal predecessors, (2234), 933 states have call successors, (933), 189 states have call predecessors, (933), 229 states have return successors, (2271), 938 states have call predecessors, (2271), 929 states have call successors, (2271) [2022-11-23 03:32:46,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3020 states to 3020 states and 5438 transitions. [2022-11-23 03:32:46,826 INFO L78 Accepts]: Start accepts. Automaton has 3020 states and 5438 transitions. Word has length 348 [2022-11-23 03:32:46,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:32:46,826 INFO L495 AbstractCegarLoop]: Abstraction has 3020 states and 5438 transitions. [2022-11-23 03:32:46,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 26 states have (on average 6.8076923076923075) internal successors, (177), 21 states have internal predecessors, (177), 8 states have call successors, (50), 3 states have call predecessors, (50), 10 states have return successors, (52), 12 states have call predecessors, (52), 7 states have call successors, (52) [2022-11-23 03:32:46,827 INFO L276 IsEmpty]: Start isEmpty. Operand 3020 states and 5438 transitions. [2022-11-23 03:32:46,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2022-11-23 03:32:46,832 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:32:46,832 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 4, 4, 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, 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] [2022-11-23 03:32:46,846 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743161bc-ac8e-474d-a5d8-317ad48e1d02/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-11-23 03:32:47,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743161bc-ac8e-474d-a5d8-317ad48e1d02/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-11-23 03:32:47,046 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:32:47,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:32:47,046 INFO L85 PathProgramCache]: Analyzing trace with hash -1810633689, now seen corresponding path program 5 times [2022-11-23 03:32:47,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:32:47,046 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316624666] [2022-11-23 03:32:47,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:32:47,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:32:47,134 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 03:32:47,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1078158173] [2022-11-23 03:32:47,135 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-23 03:32:47,135 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:32:47,135 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743161bc-ac8e-474d-a5d8-317ad48e1d02/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:32:47,136 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743161bc-ac8e-474d-a5d8-317ad48e1d02/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 03:32:47,163 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743161bc-ac8e-474d-a5d8-317ad48e1d02/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process